diff options
Diffstat (limited to 'erts/emulator')
77 files changed, 3132 insertions, 1717 deletions
diff --git a/erts/emulator/Makefile.in b/erts/emulator/Makefile.in index 61c1e14741..1ae905276d 100644 --- a/erts/emulator/Makefile.in +++ b/erts/emulator/Makefile.in @@ -116,6 +116,7 @@ ifeq ($(TYPE),lcnt) PURIFY = TYPEMARKER = .lcnt TYPE_FLAGS = @CFLAGS@ -DERTS_ENABLE_LOCK_COUNT +ENABLE_ALLOC_TYPE_VARS += lcnt else ifeq ($(TYPE),frmptr) @@ -814,7 +815,7 @@ RUN_OBJS = \ $(OBJDIR)/erl_bif_binary.o $(OBJDIR)/erl_ao_firstfit_alloc.o \ $(OBJDIR)/erl_thr_queue.o $(OBJDIR)/erl_sched_spec_pre_alloc.o \ $(OBJDIR)/erl_ptab.o $(OBJDIR)/erl_map.o \ - $(OBJDIR)/erl_msacc.o + $(OBJDIR)/erl_msacc.o $(OBJDIR)/erl_lock_flags.o LTTNG_OBJS = $(OBJDIR)/erlang_lttng.o NIF_OBJS = $(OBJDIR)/erl_tracer_nif.o diff --git a/erts/emulator/beam/atom.c b/erts/emulator/beam/atom.c index 2055c29190..c2d78aaccb 100644 --- a/erts/emulator/beam/atom.c +++ b/erts/emulator/beam/atom.c @@ -442,7 +442,8 @@ init_atom_table(void) erts_smp_atomic_init_nob(&atom_put_ops, 0); #endif - erts_smp_rwmtx_init_opt(&atom_table_lock, &rwmtx_opt, "atom_tab"); + erts_smp_rwmtx_init_opt(&atom_table_lock, &rwmtx_opt, "atom_tab", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); f.hash = (H_FUN) atom_hash; f.cmp = (HCMP_FUN) atom_cmp; diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c index 007bf99b6e..14ddb74324 100644 --- a/erts/emulator/beam/beam_bif_load.c +++ b/erts/emulator/beam/beam_bif_load.c @@ -97,7 +97,8 @@ init_purge_state(void) { purge_state.module = THE_NON_VALUE; - erts_smp_mtx_init(&purge_state.mtx, "purge_state"); + erts_smp_mtx_init(&purge_state.mtx, "purge_state", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); purge_state.pending_purge_lambda = erts_export_put(am_erts_code_purger, am_pending_purge_lambda, 3); @@ -118,7 +119,9 @@ init_purge_state(void) void erts_beam_bif_load_init(void) { - erts_smp_mtx_init(&release_literal_areas.mtx, "release_literal_areas"); + erts_smp_mtx_init(&release_literal_areas.mtx, "release_literal_areas", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); + release_literal_areas.first = NULL; release_literal_areas.last = NULL; erts_smp_atomic_init_nob(&erts_copy_literal_area__, diff --git a/erts/emulator/beam/beam_bp.c b/erts/emulator/beam/beam_bp.c index b9453c1d9a..950639f7ae 100644 --- a/erts/emulator/beam/beam_bp.c +++ b/erts/emulator/beam/beam_bp.c @@ -165,7 +165,8 @@ erts_bp_init(void) { erts_smp_atomic32_init_nob(&erts_active_bp_index, 0); erts_smp_atomic32_init_nob(&erts_staging_bp_index, 1); #ifdef ERTS_DIRTY_SCHEDULERS - erts_smp_mtx_init(&erts_dirty_bp_ix_mtx, "dirty_break_point_index"); + erts_smp_mtx_init(&erts_dirty_bp_ix_mtx, "dirty_break_point_index", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DEBUG); #endif } diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c index 79d751d13e..bc83699951 100644 --- a/erts/emulator/beam/beam_emu.c +++ b/erts/emulator/beam/beam_emu.c @@ -6829,7 +6829,7 @@ apply_fun(Process* p, Eterm fun, Eterm args, Eterm* reg) } if (is_not_nil(tmp)) { /* Must be well-formed list */ - p->freason = EXC_UNDEF; + p->freason = EXC_BADARG; return NULL; } reg[arity] = fun; diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c index 40dd4129d2..890277a3ba 100644 --- a/erts/emulator/beam/bif.c +++ b/erts/emulator/beam/bif.c @@ -62,9 +62,6 @@ static erts_smp_atomic32_t msacc; static Export *await_sched_wall_time_mod_trap; static erts_smp_atomic32_t sched_wall_time; -static erts_smp_mtx_t ports_snapshot_mtx; -erts_smp_atomic_t erts_dead_ports_ptr; /* To store dying ports during snapshot */ - #define DECL_AM(S) Eterm AM_ ## S = am_atom_put(#S, sizeof(#S) - 1) /* @@ -5138,9 +5135,6 @@ void erts_init_trap_export(Export* ep, Eterm m, Eterm f, Uint a, void erts_init_bif(void) { - erts_smp_mtx_init(&ports_snapshot_mtx, "ports_snapshot"); - erts_smp_atomic_init_nob(&erts_dead_ports_ptr, (erts_aint_t) NULL); - /* * bif_return_trap/2 is a hidden BIF that bifs that need to * yield the calling process traps to. diff --git a/erts/emulator/beam/bif.tab b/erts/emulator/beam/bif.tab index a8bbf5f8c1..962b00ae7b 100644 --- a/erts/emulator/beam/bif.tab +++ b/erts/emulator/beam/bif.tab @@ -437,7 +437,10 @@ bif erts_debug:dump_links/1 # # Lock counter bif's # -bif erts_debug:lock_counters/1 +bif erts_debug:lcnt_control/2 +bif erts_debug:lcnt_control/1 +bif erts_debug:lcnt_collect/0 +bif erts_debug:lcnt_clear/0 # # New Bifs in R8. diff --git a/erts/emulator/beam/code_ix.c b/erts/emulator/beam/code_ix.c index ec6267711b..8a3d1b20b4 100644 --- a/erts/emulator/beam/code_ix.c +++ b/erts/emulator/beam/code_ix.c @@ -57,7 +57,8 @@ void erts_code_ix_init(void) */ erts_smp_atomic32_init_nob(&the_active_code_index, 0); erts_smp_atomic32_init_nob(&the_staging_code_index, 0); - erts_smp_mtx_init(&code_write_permission_mtx, "code_write_permission"); + erts_smp_mtx_init(&code_write_permission_mtx, "code_write_permission", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); #ifdef ERTS_ENABLE_LOCK_CHECK erts_tsd_key_create(&has_code_write_permission, "erts_has_code_write_permission"); diff --git a/erts/emulator/beam/dist.c b/erts/emulator/beam/dist.c index 982f1066df..09fdb897f5 100644 --- a/erts/emulator/beam/dist.c +++ b/erts/emulator/beam/dist.c @@ -3223,7 +3223,8 @@ static ErtsNodesMonitor *nodes_monitors_end; static void init_nodes_monitors(void) { - erts_smp_mtx_init(&nodes_monitors_mtx, "nodes_monitors"); + erts_smp_mtx_init(&nodes_monitors_mtx, "nodes_monitors", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION); nodes_monitors = NULL; nodes_monitors_end = NULL; } diff --git a/erts/emulator/beam/erl_alloc.c b/erts/emulator/beam/erl_alloc.c index 169e1e423d..c7ab444c96 100644 --- a/erts/emulator/beam/erl_alloc.c +++ b/erts/emulator/beam/erl_alloc.c @@ -3819,7 +3819,8 @@ hdbg_init(void) hdbg_mblks[ERL_ALC_HDBG_MAX_MBLK-1].next = NULL; free_hdbg_mblks = &hdbg_mblks[0]; used_hdbg_mblks = NULL; - erts_mtx_init(&hdbg_mblk_mtx, "erts_alloc_hard_debug"); + erts_mtx_init(&hdbg_mblk_mtx, "erts_alloc_hard_debug", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_ALLOCATOR); } static void *check_memory_fence(void *ptr, diff --git a/erts/emulator/beam/erl_alloc.h b/erts/emulator/beam/erl_alloc.h index 7b5cbe2178..97a1cf1308 100644 --- a/erts/emulator/beam/erl_alloc.h +++ b/erts/emulator/beam/erl_alloc.h @@ -344,7 +344,8 @@ ERTS_QUICK_ALLOC_IMPL(NAME, TYPE, PASZ, ALCT, \ #define ERTS_SMP_QUALLOC_IMPL(NAME, TYPE, PASZ, ALCT) \ static erts_smp_spinlock_t NAME##_lck; \ ERTS_QUICK_ALLOC_IMPL(NAME, TYPE, PASZ, ALCT, \ - erts_smp_spinlock_init(&NAME##_lck, #NAME "_alloc_lock"),\ + erts_smp_spinlock_init(&NAME##_lck, #NAME "_alloc_lock", NIL, \ + ERTS_LOCK_FLAGS_CATEGORY_ALLOCATOR),\ erts_smp_spin_lock(&NAME##_lck), \ erts_smp_spin_unlock(&NAME##_lck)) @@ -358,7 +359,8 @@ ERTS_SMP_QUALLOC_IMPL(NAME, TYPE, PASZ, ALCT) #define ERTS_TS_QUALLOC_IMPL(NAME, TYPE, PASZ, ALCT) \ static erts_mtx_t NAME##_lck; \ ERTS_QUICK_ALLOC_IMPL(NAME, TYPE, PASZ, ALCT, \ - erts_mtx_init(NAME##_lck, #NAME "_alloc_lock"), \ + erts_mtx_init(NAME##_lck, #NAME "_alloc_lock", NIL, \ + ERTS_LOCK_FLAGS_CATEGORY_ALLOCATOR),\ erts_mtx_lock(&NAME##_lck), \ erts_mtx_unlock(&NAME##_lck)) @@ -371,7 +373,8 @@ ERTS_PRE_ALLOC_IMPL(NAME, TYPE, PASZ, (void) 0, (void) 0, (void) 0) #define ERTS_TS_PALLOC_IMPL(NAME, TYPE, PASZ) \ static erts_spinlock_t NAME##_lck; \ ERTS_PRE_ALLOC_IMPL(NAME, TYPE, PASZ, \ - erts_spinlock_init(&NAME##_lck, #NAME "_alloc_lock"),\ + erts_spinlock_init(&NAME##_lck, #NAME "_alloc_lock", NIL, \ + ERTS_LOCK_FLAGS_CATEGORY_ALLOCATOR),\ erts_spin_lock(&NAME##_lck), \ erts_spin_unlock(&NAME##_lck)) @@ -448,7 +451,7 @@ NAME##_free(TYPE *p) \ } #ifdef DEBUG -#define ERTS_PRE_ALLOC_SIZE(SZ) 2 +#define ERTS_PRE_ALLOC_SIZE(SZ) ((SZ) < 1000 ? (SZ)/10 + 10 : 100) #define ERTS_PRE_ALLOC_CLOBBER(P, T) memset((void *) (P), 0xfd, sizeof(T)) #else #define ERTS_PRE_ALLOC_SIZE(SZ) ((SZ) > 1 ? (SZ) : 1) diff --git a/erts/emulator/beam/erl_alloc.types b/erts/emulator/beam/erl_alloc.types index 8a23a1526e..50a1d97dd5 100644 --- a/erts/emulator/beam/erl_alloc.types +++ b/erts/emulator/beam/erl_alloc.types @@ -368,6 +368,13 @@ type SSB SHORT_LIVED PROCESSES ssb +endif ++if lcnt + +type LCNT_CARRIER STANDARD SYSTEM lcnt_lock_info_carrier +type LCNT_VECTOR SHORT_LIVED SYSTEM lcnt_sample_vector + ++endif + type DEBUG SHORT_LIVED SYSTEM debugging type DDLL_PROCESS STANDARD SYSTEM ddll_processes diff --git a/erts/emulator/beam/erl_alloc_util.c b/erts/emulator/beam/erl_alloc_util.c index 6fddba4b34..af86ad0548 100644 --- a/erts/emulator/beam/erl_alloc_util.c +++ b/erts/emulator/beam/erl_alloc_util.c @@ -6135,16 +6135,8 @@ erts_alcu_start(Allctr_t *allctr, AllctrInit_t *init) if (init->ts) { allctr->thread_safe = 1; -#ifdef ERTS_ENABLE_LOCK_COUNT - erts_mtx_init_x_opt(&allctr->mutex, - "alcu_allocator", - make_small(allctr->alloc_no), - ERTS_LCNT_LT_ALLOC); -#else - erts_mtx_init_x(&allctr->mutex, - "alcu_allocator", - make_small(allctr->alloc_no)); -#endif /*ERTS_ENABLE_LOCK_COUNT*/ + erts_mtx_init(&allctr->mutex, "alcu_allocator", make_small(allctr->alloc_no), + ERTS_LOCK_FLAGS_CATEGORY_ALLOCATOR); #ifdef DEBUG allctr->debug.saved_tid = 0; @@ -6324,7 +6316,8 @@ erts_alcu_init(AlcUInit_t *init) carrier_alignment = sizeof(Unit_t); #endif - erts_mtx_init(&init_atoms_mtx, "alcu_init_atoms"); + erts_mtx_init(&init_atoms_mtx, "alcu_init_atoms", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_ALLOCATOR); atoms_initialized = 0; initialized = 1; @@ -6592,3 +6585,45 @@ check_blk_carrier(Allctr_t *allctr, Block_t *iblk) #endif /* ERTS_ALLOC_UTIL_HARD_DEBUG */ +#ifdef ERTS_ENABLE_LOCK_COUNT + +static void lcnt_enable_allocator_lock_count(Allctr_t *allocator, int enable) { + if(!allocator->thread_safe) { + return; + } + + if(enable) { + erts_lcnt_install_new_lock_info(&allocator->mutex.lcnt, + "alcu_allocator", make_small(allocator->alloc_no), + ERTS_LOCK_TYPE_MUTEX | ERTS_LOCK_FLAGS_CATEGORY_ALLOCATOR); + } else { + erts_lcnt_uninstall(&allocator->mutex.lcnt); + } +} + +static void lcnt_update_thread_spec_locks(ErtsAllocatorThrSpec_t *tspec, int enable) { + if(tspec->enabled) { + int i; + + for(i = 0; i < tspec->size; i++) { + lcnt_enable_allocator_lock_count(tspec->allctr[i], enable); + } + } +} + +void erts_lcnt_update_allocator_locks(int enable) { + int i; + + for(i = ERTS_ALC_A_MIN; i < ERTS_ALC_A_MAX; i++) { + ErtsAllocatorInfo_t *ai = &erts_allctrs_info[i]; + + if(ai->enabled && ai->alloc_util) { + if(ai->thr_spec) { + lcnt_update_thread_spec_locks((ErtsAllocatorThrSpec_t*)ai->extra, enable); + } else { + lcnt_enable_allocator_lock_count((Allctr_t*)ai->extra, enable); + } + } + } +} +#endif /* ERTS_ENABLE_LOCK_COUNT */ diff --git a/erts/emulator/beam/erl_alloc_util.h b/erts/emulator/beam/erl_alloc_util.h index e889980fa4..73c467aa0a 100644 --- a/erts/emulator/beam/erl_alloc_util.h +++ b/erts/emulator/beam/erl_alloc_util.h @@ -220,6 +220,10 @@ void* erts_alcu_literal_32_sys_realloc(Allctr_t*, void *ptr, Uint *size_p, Uint void erts_alcu_literal_32_sys_dealloc(Allctr_t*, void *ptr, Uint size, int superalign); #endif +#ifdef ERTS_ENABLE_LOCK_COUNT +void erts_lcnt_update_allocator_locks(int enable); +#endif + #endif /* !ERL_ALLOC_UTIL__ */ #if defined(GET_ERL_ALLOC_UTIL_IMPL) && !defined(ERL_ALLOC_UTIL_IMPL__) @@ -673,7 +677,6 @@ void erts_alcu_assert_failed(char* expr, char* file, int line, char *func); int is_sbc_blk(Block_t*); #endif - #endif /* #if defined(GET_ERL_ALLOC_UTIL_IMPL) && !defined(ERL_ALLOC_UTIL_IMPL__) */ diff --git a/erts/emulator/beam/erl_async.c b/erts/emulator/beam/erl_async.c index 84254af0c2..9a93034fcb 100644 --- a/erts/emulator/beam/erl_async.c +++ b/erts/emulator/beam/erl_async.c @@ -194,7 +194,8 @@ erts_init_async(void) ptr += ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(ErtsAsyncData)); async->init.data.no_initialized = 0; - erts_mtx_init(&async->init.data.mtx, "async_init_mtx"); + erts_mtx_init(&async->init.data.mtx, "async_init_mtx", NIL, + ERTS_LOCK_FLAGS_CATEGORY_SCHEDULER); erts_cnd_init(&async->init.data.cnd); erts_atomic_init_nob(&async->init.data.id, 0); @@ -213,7 +214,8 @@ erts_init_async(void) for (i = 1; i <= erts_no_schedulers; i++) { ErtsAsyncReadyQ *arq = async_ready_q(i); #if ERTS_USE_ASYNC_READY_ENQ_MTX - erts_mtx_init(&arq->x.data.enq_mtx, "async_enq_mtx"); + erts_mtx_init(&arq->x.data.enq_mtx, "async_enq_mtx", make_small(i), + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_SCHEDULER); #endif erts_thr_q_finalize_dequeue_state_init(&arq->fin_deq); qinit.arg = (void *) (SWord) i; diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c index 96f9b284b3..e5d7efcc72 100644 --- a/erts/emulator/beam/erl_bif_info.c +++ b/erts/emulator/beam/erl_bif_info.c @@ -4452,48 +4452,120 @@ BIF_RETTYPE erts_debug_set_internal_state_2(BIF_ALIST_2) } #ifdef ERTS_ENABLE_LOCK_COUNT + +typedef struct { + /* info->location_count may increase between size calculation and term + * building, so we cap it at the value sampled in lcnt_build_result_vector. + * + * Shrinking is safe though. */ + int max_location_count; + erts_lcnt_lock_info_t *info; +} lcnt_sample_t; + +typedef struct lcnt_sample_vector_ { + lcnt_sample_t *elements; + size_t size; +} lcnt_sample_vector_t; + +static lcnt_sample_vector_t lcnt_build_sample_vector(erts_lcnt_lock_info_list_t *list) { + erts_lcnt_lock_info_t *iterator; + lcnt_sample_vector_t result; + size_t allocated_entries; + + allocated_entries = 64; + result.size = 0; + + result.elements = erts_alloc(ERTS_ALC_T_LCNT_VECTOR, + allocated_entries * sizeof(lcnt_sample_t)); + + iterator = NULL; + while(erts_lcnt_iterate_list(list, &iterator)) { + erts_lcnt_retain_lock_info(iterator); + + result.elements[result.size].max_location_count = iterator->location_count; + result.elements[result.size].info = iterator; + + result.size++; + + if(result.size >= allocated_entries) { + allocated_entries *= 2; + + result.elements = erts_realloc(ERTS_ALC_T_LCNT_VECTOR, result.elements, + allocated_entries * sizeof(lcnt_sample_t)); + } + } + + return result; +} + +static void lcnt_destroy_sample_vector(lcnt_sample_vector_t *vector) { + size_t i; + + for(i = 0; i < vector->size; i++) { + erts_lcnt_release_lock_info(vector->elements[i].info); + } + + erts_free(ERTS_ALC_T_LCNT_VECTOR, vector->elements); +} + +/* The size of an integer is not guaranteed to be constant since we're walking + * over live data, and may cross over into bignum territory between size calc + * and the actual build. This takes care of that through always assuming the + * worst, but needs to be fixed up with HRelease once the final term has been + * built. */ +static ERTS_INLINE Eterm bld_unstable_uint64(Uint **hpp, Uint *szp, Uint64 ui) { + Eterm res = THE_NON_VALUE; + + if(szp) { + *szp += ERTS_UINT64_HEAP_SIZE(~((Uint64) 0)); + } + + if(hpp) { + if (IS_USMALL(0, ui)) { + res = make_small(ui); + } else { + res = erts_uint64_to_big(ui, hpp); + } + } + + return res; +} + static Eterm lcnt_build_lock_stats_term(Eterm **hpp, Uint *szp, erts_lcnt_lock_stats_t *stats, Eterm res) { - Uint tries = 0, colls = 0; - unsigned long timer_s = 0, timer_ns = 0, timer_n = 0; - unsigned int line = 0; unsigned int i; - + const char *file; + Eterm af, uil; Eterm uit, uic; Eterm uits, uitns, uitn; Eterm tt, tstat, tloc, t; Eterm thist, vhist[ERTS_LCNT_HISTOGRAM_SLOT_SIZE]; - + /* term: - * [{{file, line}, {tries, colls, {seconds, nanoseconds, n_blocks}}, - * { .. histogram .. }] - */ + * [{{file, line}, + {tries, colls, {seconds, nanoseconds, n_blocks}}, + * { .. histogram .. }] */ - tries = (Uint) ethr_atomic_read(&stats->tries); - colls = (Uint) ethr_atomic_read(&stats->colls); - - line = stats->line; - timer_s = stats->timer.s; - timer_ns = stats->timer.ns; - timer_n = stats->timer_n; - - af = erts_atom_put((byte *)stats->file, strlen(stats->file), ERTS_ATOM_ENC_LATIN1, 1); - uil = erts_bld_uint( hpp, szp, line); + file = stats->file ? stats->file : "undefined"; + + af = erts_atom_put((byte *)file, strlen(file), ERTS_ATOM_ENC_LATIN1, 1); + uil = erts_bld_uint( hpp, szp, stats->line); tloc = erts_bld_tuple(hpp, szp, 2, af, uil); - - uit = erts_bld_uint( hpp, szp, tries); - uic = erts_bld_uint( hpp, szp, colls); - uits = erts_bld_uint( hpp, szp, timer_s); - uitns = erts_bld_uint( hpp, szp, timer_ns); - uitn = erts_bld_uint( hpp, szp, timer_n); + uit = bld_unstable_uint64(hpp, szp, (Uint)ethr_atomic_read(&stats->attempts)); + uic = bld_unstable_uint64(hpp, szp, (Uint)ethr_atomic_read(&stats->collisions)); + + uits = bld_unstable_uint64(hpp, szp, stats->total_time_waited.s); + uitns = bld_unstable_uint64(hpp, szp, stats->total_time_waited.ns); + uitn = bld_unstable_uint64(hpp, szp, stats->times_waited); tt = erts_bld_tuple(hpp, szp, 3, uits, uitns, uitn); tstat = erts_bld_tuple(hpp, szp, 3, uit, uic, tt); for(i = 0; i < ERTS_LCNT_HISTOGRAM_SLOT_SIZE; i++) { - vhist[i] = erts_bld_uint(hpp, szp, stats->hist.ns[i]); + vhist[i] = bld_unstable_uint64(hpp, szp, stats->wait_time_histogram.ns[i]); } + thist = erts_bld_tuplev(hpp, szp, ERTS_LCNT_HISTOGRAM_SLOT_SIZE, vhist); t = erts_bld_tuple(hpp, szp, 3, tloc, tstat, thist); @@ -4502,185 +4574,266 @@ static Eterm lcnt_build_lock_stats_term(Eterm **hpp, Uint *szp, erts_lcnt_lock_s return res; } -static Eterm lcnt_build_lock_term(Eterm **hpp, Uint *szp, erts_lcnt_lock_t *lock, Eterm res) { +static Eterm lcnt_pretty_print_lock_id(erts_lcnt_lock_info_t *info) { + Eterm id = info->id; + + if((info->flags & ERTS_LOCK_FLAGS_MASK_TYPE) == ERTS_LOCK_TYPE_PROCLOCK) { + /* Use registered names as id's for process locks if available. Thread + * progress is delayed since we may be running on a dirty scheduler. */ + ErtsThrPrgrDelayHandle delay_handle; + Process *process; + + delay_handle = erts_thr_progress_unmanaged_delay(); + + process = erts_proc_lookup(info->id); + if (process && process->common.u.alive.reg) { + id = process->common.u.alive.reg->name; + } + + erts_thr_progress_unmanaged_continue(delay_handle); + } else if(info->flags & ERTS_LOCK_FLAGS_CATEGORY_ALLOCATOR) { + if(is_small(id) && !sys_strcmp(info->name, "alcu_allocator")) { + const char *name = (const char*)ERTS_ALC_A2AD(signed_val(id)); + id = erts_atom_put((byte*)name, strlen(name), ERTS_ATOM_ENC_LATIN1, 1); + } + } + + return id; +} + +static Eterm lcnt_build_lock_term(Eterm **hpp, Uint *szp, lcnt_sample_t *sample, Eterm res) { + erts_lcnt_lock_info_t *info = sample->info; + Eterm name, type, id, stats = NIL, t; - Process *proc = NULL; - char *ltype; + const char *lock_desc; int i; + + /* term: [{name, id, type, stats()}] */ + + ASSERT(info->name); - /* term: - * [{name, id, type, stats()}] - */ - - ASSERT(lock->name); - - ltype = erts_lcnt_lock_type(lock->flag); - - ASSERT(ltype); - - type = erts_atom_put((byte *)ltype, strlen(ltype), ERTS_ATOM_ENC_LATIN1, 1); - name = erts_atom_put((byte *)lock->name, strlen(lock->name), ERTS_ATOM_ENC_LATIN1, 1); - - if (lock->flag & ERTS_LCNT_LT_ALLOC) { - /* use allocator types names as id's for allocator locks */ - ltype = (char *) ERTS_ALC_A2AD(signed_val(lock->id)); - id = erts_atom_put((byte *)ltype, strlen(ltype), ERTS_ATOM_ENC_LATIN1, 1); - } else if (lock->flag & ERTS_LCNT_LT_PROCLOCK) { - /* use registered names as id's for process locks if available */ - proc = erts_proc_lookup(lock->id); - if (proc && proc->common.u.alive.reg) { - id = proc->common.u.alive.reg->name; - } else { - /* otherwise use process id */ - id = lock->id; - } + lock_desc = erts_lock_flags_get_type_name(info->flags); + + type = erts_atom_put((byte*)lock_desc, strlen(lock_desc), ERTS_ATOM_ENC_LATIN1, 1); + name = erts_atom_put((byte*)info->name, strlen(info->name), ERTS_ATOM_ENC_LATIN1, 1); + + /* Only attempt to resolve ids when actually emitting the term. This ought + * to be safe since all immediates are the same size. */ + if(hpp != NULL) { + id = lcnt_pretty_print_lock_id(info); } else { - id = lock->id; + id = NIL; } - for (i = 0; i < lock->n_stats; i++) { - stats = lcnt_build_lock_stats_term(hpp, szp, &(lock->stats[i]), stats); + for(i = 0; i < MIN(info->location_count, sample->max_location_count); i++) { + stats = lcnt_build_lock_stats_term(hpp, szp, &(info->location_stats[i]), stats); } t = erts_bld_tuple(hpp, szp, 4, name, id, type, stats); - res = erts_bld_cons( hpp, szp, t, res); + res = erts_bld_cons(hpp, szp, t, res); return res; } -static Eterm lcnt_build_result_term(Eterm **hpp, Uint *szp, erts_lcnt_data_t *data, Eterm res) { +static Eterm lcnt_build_result_term(Eterm **hpp, Uint *szp, erts_lcnt_time_t *duration, + lcnt_sample_vector_t *current_locks, + lcnt_sample_vector_t *deleted_locks, Eterm res) { + const char *str_duration = "duration"; + const char *str_locks = "locks"; + Eterm dts, dtns, tdt, adur, tdur, aloc, lloc = NIL, tloc; - erts_lcnt_lock_t *lock = NULL; - char *str_duration = "duration"; - char *str_locks = "locks"; - - /* term: - * [{'duration', {seconds, nanoseconds}}, {'locks', locks()}] - */ - + size_t i; + + /* term: [{'duration', {seconds, nanoseconds}}, {'locks', locks()}] */ + /* duration tuple */ - dts = erts_bld_uint( hpp, szp, data->duration.s); - dtns = erts_bld_uint( hpp, szp, data->duration.ns); + dts = bld_unstable_uint64(hpp, szp, duration->s); + dtns = bld_unstable_uint64(hpp, szp, duration->ns); tdt = erts_bld_tuple(hpp, szp, 2, dts, dtns); - + adur = erts_atom_put((byte *)str_duration, strlen(str_duration), ERTS_ATOM_ENC_LATIN1, 1); tdur = erts_bld_tuple(hpp, szp, 2, adur, tdt); /* lock tuple */ - aloc = erts_atom_put((byte *)str_locks, strlen(str_locks), ERTS_ATOM_ENC_LATIN1, 1); - - for (lock = data->current_locks->head; lock != NULL ; lock = lock->next ) { - lloc = lcnt_build_lock_term(hpp, szp, lock, lloc); + + for(i = 0; i < current_locks->size; i++) { + lloc = lcnt_build_lock_term(hpp, szp, ¤t_locks->elements[i], lloc); } - - for (lock = data->deleted_locks->head; lock != NULL ; lock = lock->next ) { - lloc = lcnt_build_lock_term(hpp, szp, lock, lloc); + + for(i = 0; i < deleted_locks->size; i++) { + lloc = lcnt_build_lock_term(hpp, szp, &deleted_locks->elements[i], lloc); } - + tloc = erts_bld_tuple(hpp, szp, 2, aloc, lloc); - - res = erts_bld_cons( hpp, szp, tloc, res); - res = erts_bld_cons( hpp, szp, tdur, res); + + res = erts_bld_cons(hpp, szp, tloc, res); + res = erts_bld_cons(hpp, szp, tdur, res); return res; -} +} + +static struct { + const char *name; + erts_lock_flags_t flag; +} lcnt_category_map[] = { + {"allocator", ERTS_LOCK_FLAGS_CATEGORY_ALLOCATOR}, + {"db", ERTS_LOCK_FLAGS_CATEGORY_DB}, + {"debug", ERTS_LOCK_FLAGS_CATEGORY_DEBUG}, + {"distribution", ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION}, + {"generic", ERTS_LOCK_FLAGS_CATEGORY_GENERIC}, + {"io", ERTS_LOCK_FLAGS_CATEGORY_IO}, + {"process", ERTS_LOCK_FLAGS_CATEGORY_PROCESS}, + {"scheduler", ERTS_LOCK_FLAGS_CATEGORY_SCHEDULER}, + {NULL, 0} + }; + +static erts_lock_flags_t lcnt_atom_to_lock_category(Eterm atom) { + int i = 0; + + for(i = 0; lcnt_category_map[i].name != NULL; i++) { + if(erts_is_atom_str(lcnt_category_map[i].name, atom, 0)) { + return lcnt_category_map[i].flag; + } + } + + return 0; +} + +static Eterm lcnt_build_category_list(Eterm **hpp, Uint *szp, erts_lock_flags_t mask) { + Eterm res; + int i; + + res = NIL; + + for(i = 0; lcnt_category_map[i].name != NULL; i++) { + if(mask & lcnt_category_map[i].flag) { + Eterm category = erts_atom_put((byte*)lcnt_category_map[i].name, + strlen(lcnt_category_map[i].name), + ERTS_ATOM_ENC_UTF8, 0); + + res = erts_bld_cons(hpp, szp, category, res); + } + } + + return res; +} + #endif -BIF_RETTYPE erts_debug_lock_counters_1(BIF_ALIST_1) +BIF_RETTYPE erts_debug_lcnt_clear_0(BIF_ALIST_0) { -#ifdef ERTS_ENABLE_LOCK_COUNT - Eterm res = NIL; -#endif +#ifndef ERTS_ENABLE_LOCK_COUNT + BIF_RET(am_error); +#else + erts_lcnt_clear_counters(); + BIF_RET(am_ok); +#endif +} - if (BIF_ARG_1 == am_enabled) { -#ifdef ERTS_ENABLE_LOCK_COUNT - BIF_RET(am_true); +BIF_RETTYPE erts_debug_lcnt_collect_0(BIF_ALIST_0) +{ +#ifndef ERTS_ENABLE_LOCK_COUNT + BIF_RET(am_error); #else - BIF_RET(am_false); -#endif - } -#ifdef ERTS_ENABLE_LOCK_COUNT + lcnt_sample_vector_t current_locks, deleted_locks; + erts_lcnt_data_t data; - else if (BIF_ARG_1 == am_info) { - erts_lcnt_data_t *data; - Uint hsize = 0; - Uint *szp; - Eterm* hp; + Eterm *term_heap_start, *term_heap_end; + Uint term_heap_size = 0; + Eterm result; - erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN); - erts_smp_thr_progress_block(); + data = erts_lcnt_get_data(); - erts_lcnt_set_rt_opt(ERTS_LCNT_OPT_SUSPEND); - data = erts_lcnt_get_data(); + current_locks = lcnt_build_sample_vector(data.current_locks); + deleted_locks = lcnt_build_sample_vector(data.deleted_locks); - /* calculate size */ + lcnt_build_result_term(NULL, &term_heap_size, &data.duration, + ¤t_locks, &deleted_locks, NIL); - szp = &hsize; - lcnt_build_result_term(NULL, szp, data, NIL); + term_heap_start = HAlloc(BIF_P, term_heap_size); + term_heap_end = term_heap_start; - /* alloc and build */ + result = lcnt_build_result_term(&term_heap_end, NULL, + &data.duration, ¤t_locks, &deleted_locks, NIL); - hp = HAlloc(BIF_P, hsize); + HRelease(BIF_P, term_heap_start + term_heap_size, term_heap_end); - res = lcnt_build_result_term(&hp, NULL, data, res); - - erts_lcnt_clear_rt_opt(ERTS_LCNT_OPT_SUSPEND); + lcnt_destroy_sample_vector(¤t_locks); + lcnt_destroy_sample_vector(&deleted_locks); - erts_smp_thr_progress_unblock(); - erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN); - - BIF_RET(res); - } else if (BIF_ARG_1 == am_clear) { - erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN); - erts_smp_thr_progress_block(); + BIF_RET(result); +#endif +} + +BIF_RETTYPE erts_debug_lcnt_control_1(BIF_ALIST_1) +{ +#ifdef ERTS_ENABLE_LOCK_COUNT + if(ERTS_IS_ATOM_STR("mask", BIF_ARG_1)) { + erts_lock_flags_t mask; + Eterm *term_heap_block; + Uint term_heap_size; - erts_lcnt_clear_counters(); + mask = erts_lcnt_get_category_mask(); + term_heap_size = 0; - erts_smp_thr_progress_unblock(); - erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN); + lcnt_build_category_list(NULL, &term_heap_size, mask); - BIF_RET(am_ok); - } else if (is_tuple(BIF_ARG_1)) { - Eterm* ptr = tuple_val(BIF_ARG_1); - - if ((arityval(ptr[0]) == 2) && (ptr[2] == am_false || ptr[2] == am_true)) { - int lock_opt = 0, enable = (ptr[2] == am_true) ? 1 : 0; - if (ERTS_IS_ATOM_STR("copy_save", ptr[1])) { - lock_opt = ERTS_LCNT_OPT_COPYSAVE; - } else if (ERTS_IS_ATOM_STR("process_locks", ptr[1])) { - lock_opt = ERTS_LCNT_OPT_PROCLOCK; - } else if (ERTS_IS_ATOM_STR("port_locks", ptr[1])) { - lock_opt = ERTS_LCNT_OPT_PORTLOCK; - } else if (ERTS_IS_ATOM_STR("suspend", ptr[1])) { - lock_opt = ERTS_LCNT_OPT_SUSPEND; - } else if (ERTS_IS_ATOM_STR("location", ptr[1])) { - lock_opt = ERTS_LCNT_OPT_LOCATION; - } else { - BIF_ERROR(BIF_P, BADARG); - } + term_heap_block = HAlloc(BIF_P, term_heap_size); - erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN); - erts_smp_thr_progress_block(); + BIF_RET(lcnt_build_category_list(&term_heap_block, NULL, mask)); + } else if(ERTS_IS_ATOM_STR("copy_save", BIF_ARG_1)) { + if(erts_lcnt_get_preserve_info()) { + BIF_RET(am_true); + } - if (enable) res = erts_lcnt_set_rt_opt(lock_opt) ? am_true : am_false; - else res = erts_lcnt_clear_rt_opt(lock_opt) ? am_true : am_false; - -#ifdef ERTS_SMP - if (res != ptr[2] && lock_opt == ERTS_LCNT_OPT_PORTLOCK) { - erts_lcnt_enable_io_lock_count(enable); - } else if (res != ptr[2] && lock_opt == ERTS_LCNT_OPT_PROCLOCK) { - erts_lcnt_enable_proc_lock_count(enable); - } + BIF_RET(am_false); + } #endif - erts_smp_thr_progress_unblock(); - erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN); - BIF_RET(res); + BIF_ERROR(BIF_P, BADARG); +} + +BIF_RETTYPE erts_debug_lcnt_control_2(BIF_ALIST_2) +{ +#ifdef ERTS_ENABLE_LOCK_COUNT + if(ERTS_IS_ATOM_STR("mask", BIF_ARG_1)) { + erts_lock_flags_t category_mask = 0; + Eterm categories = BIF_ARG_2; + + if(!(is_list(categories) || is_nil(categories))) { + BIF_ERROR(BIF_P, BADARG); } - } -#endif + while(is_list(categories)) { + Eterm *cell = list_val(categories); + erts_lock_flags_t category; + + category = lcnt_atom_to_lock_category(CAR(cell)); + + if(!category) { + Eterm *hp = HAlloc(BIF_P, 4); + + BIF_RET(TUPLE3(hp, am_error, am_badarg, CAR(cell))); + } + + category_mask |= category; + categories = CDR(cell); + } + + erts_lcnt_set_category_mask(category_mask); + + BIF_RET(am_ok); + } else if(BIF_ARG_2 == am_true || BIF_ARG_2 == am_false) { + int enabled = (BIF_ARG_2 == am_true); + + if(ERTS_IS_ATOM_STR("copy_save", BIF_ARG_1)) { + erts_lcnt_set_preserve_info(enabled); + + BIF_RET(am_ok); + } + } +#endif BIF_ERROR(BIF_P, BADARG); } diff --git a/erts/emulator/beam/erl_bif_unique.c b/erts/emulator/beam/erl_bif_unique.c index fc6fb5f868..2f8adc87d5 100644 --- a/erts/emulator/beam/erl_bif_unique.c +++ b/erts/emulator/beam/erl_bif_unique.c @@ -392,7 +392,8 @@ init_magic_ref_tables(void) erts_snprintf(&tblp->name[0], sizeof(tblp->name), "magic_ref_table_0"); hash_init(0, &tblp->hash, &tblp->name[0], 1, hash_funcs); - erts_rwmtx_init(&tblp->rwmtx, "magic_ref_table"); + erts_rwmtx_init(&tblp->rwmtx, "magic_ref_table", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); hash_funcs.hash = nsched_mreft_hash; hash_funcs.cmp = nsched_mreft_cmp; @@ -402,7 +403,8 @@ init_magic_ref_tables(void) erts_snprintf(&tblp->name[0], sizeof(tblp->name), "magic_ref_table_%d", i); hash_init(0, &tblp->hash, &tblp->name[0], 1, hash_funcs); - erts_rwmtx_init(&tblp->rwmtx, "magic_ref_table"); + erts_rwmtx_init(&tblp->rwmtx, "magic_ref_table", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); } } diff --git a/erts/emulator/beam/erl_cpu_topology.c b/erts/emulator/beam/erl_cpu_topology.c index 50f33b2014..f8b2fa744f 100644 --- a/erts/emulator/beam/erl_cpu_topology.c +++ b/erts/emulator/beam/erl_cpu_topology.c @@ -1706,7 +1706,8 @@ erts_init_cpu_topology(void) { int ix; - erts_smp_rwmtx_init(&cpuinfo_rwmtx, "cpu_info"); + erts_smp_rwmtx_init(&cpuinfo_rwmtx, "cpu_info", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); erts_smp_rwmtx_rwlock(&cpuinfo_rwmtx); scheduler2cpu_map = erts_alloc(ERTS_ALC_T_CPUDATA, diff --git a/erts/emulator/beam/erl_db.c b/erts/emulator/beam/erl_db.c index 17e0f2aeec..b83134c79c 100644 --- a/erts/emulator/beam/erl_db.c +++ b/erts/emulator/beam/erl_db.c @@ -575,9 +575,7 @@ delete_owned_table(Process *p, DbTable *tb) table_dec_refc(tb, 1); } - -static ERTS_INLINE void db_init_lock(DbTable* tb, int use_frequent_read_lock, - char *rwname, char* fixname) +static ERTS_INLINE void db_init_lock(DbTable* tb, int use_frequent_read_lock) { #ifdef ERTS_SMP erts_smp_rwmtx_opt_t rwmtx_opt = ERTS_SMP_RWMTX_OPT_DEFAULT_INITER; @@ -587,9 +585,10 @@ static ERTS_INLINE void db_init_lock(DbTable* tb, int use_frequent_read_lock, rwmtx_opt.main_spincount = erts_ets_rwmtx_spin_count; #endif #ifdef ERTS_SMP - erts_smp_rwmtx_init_opt_x(&tb->common.rwlock, &rwmtx_opt, - rwname, tb->common.the_name); - erts_smp_mtx_init_x(&tb->common.fixlock, fixname, tb->common.the_name); + erts_smp_rwmtx_init_opt(&tb->common.rwlock, &rwmtx_opt, "db_tab", + tb->common.the_name, ERTS_LOCK_FLAGS_CATEGORY_DB); + erts_smp_mtx_init(&tb->common.fixlock, "db_tab_fix", + tb->common.the_name, ERTS_LOCK_FLAGS_CATEGORY_DB); tb->common.is_thread_safe = !(tb->common.status & DB_FINE_LOCKED); #endif } @@ -1753,8 +1752,7 @@ BIF_RETTYPE ets_new_2(BIF_ALIST_2) /* Note, 'type' is *read only* from now on... */ #endif erts_smp_refc_init(&tb->common.fix_count, 0); - db_init_lock(tb, status & (DB_FINE_LOCKED|DB_FREQ_READ), - "db_tab", "db_tab_fix"); + db_init_lock(tb, status & (DB_FINE_LOCKED|DB_FREQ_READ)); tb->common.keypos = keypos; tb->common.owner = BIF_P->common.id; set_heir(BIF_P, tb, heir, heir_data); @@ -3391,8 +3389,9 @@ void init_db(ErtsDbSpinCount db_spin_count) rwmtx_opt.main_spincount = erts_ets_rwmtx_spin_count; for (i=0; i<META_NAME_TAB_LOCK_CNT; i++) { - erts_smp_rwmtx_init_opt_x(&meta_name_tab_rwlocks[i].lck, &rwmtx_opt, - "meta_name_tab", make_small(i)); + erts_smp_rwmtx_init_opt(&meta_name_tab_rwlocks[i].lck, &rwmtx_opt, + "meta_name_tab", make_small(i), + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DB); } #endif @@ -4334,3 +4333,47 @@ erts_ets_colliding_names(Process* p, Eterm name, Uint cnt) return list; } +#ifdef ERTS_ENABLE_LOCK_COUNT + +void erts_lcnt_enable_db_lock_count(DbTable *tb, int enable) { + if(enable) { + erts_lcnt_install_new_lock_info(&tb->common.rwlock.lcnt, "db_tab", + tb->common.the_name, ERTS_LOCK_TYPE_RWMUTEX | ERTS_LOCK_FLAGS_CATEGORY_DB); + erts_lcnt_install_new_lock_info(&tb->common.fixlock.lcnt, "db_tab_fix", + tb->common.the_name, ERTS_LOCK_TYPE_MUTEX | ERTS_LOCK_FLAGS_CATEGORY_DB); + } else { + erts_lcnt_uninstall(&tb->common.rwlock.lcnt); + erts_lcnt_uninstall(&tb->common.fixlock.lcnt); + } + + if(IS_HASH_TABLE(tb->common.status)) { + erts_lcnt_enable_db_hash_lock_count(&tb->hash, enable); + } +} + +static void lcnt_update_db_locks_per_sched(void *enable) { + ErtsSchedulerData *esdp; + DbTable *head; + + esdp = erts_get_scheduler_data(); + head = esdp->ets_tables.clist; + + if(head) { + DbTable *iterator = head; + + do { + if(is_table_alive(iterator)) { + erts_lcnt_enable_db_lock_count(iterator, !!enable); + } + + iterator = iterator->common.all.next; + } while (iterator != head); + } +} + +void erts_lcnt_update_db_locks(int enable) { + erts_schedule_multi_misc_aux_work(0, erts_no_schedulers, + &lcnt_update_db_locks_per_sched, (void*)(UWord)enable); +} + +#endif /* ERTS_ENABLE_LOCK_COUNT */
\ No newline at end of file diff --git a/erts/emulator/beam/erl_db.h b/erts/emulator/beam/erl_db.h index 4ff9f224e8..d83126b3a2 100644 --- a/erts/emulator/beam/erl_db.h +++ b/erts/emulator/beam/erl_db.h @@ -129,6 +129,11 @@ extern erts_smp_atomic_t erts_ets_misc_mem_size; Eterm erts_ets_colliding_names(Process*, Eterm name, Uint cnt); Uint erts_db_get_max_tabs(void); +#ifdef ERTS_ENABLE_LOCK_COUNT +void erts_lcnt_enable_db_lock_count(DbTable *tb, int enable); +void erts_lcnt_update_db_locks(int enable); +#endif + #endif /* ERL_DB_H__ */ #if defined(ERTS_WANT_DB_INTERNAL__) && !defined(ERTS_HAVE_DB_INTERNAL__) diff --git a/erts/emulator/beam/erl_db_hash.c b/erts/emulator/beam/erl_db_hash.c index 0addfaa3c7..ae9322dfd3 100644 --- a/erts/emulator/beam/erl_db_hash.c +++ b/erts/emulator/beam/erl_db_hash.c @@ -675,8 +675,8 @@ int db_create_hash(Process *p, DbTable *tbl) (DbTable *) tb, sizeof(DbTableHashFineLocks)); for (i=0; i<DB_HASH_LOCK_CNT; ++i) { - erts_smp_rwmtx_init_opt_x(&tb->locks->lck_vec[i].lck, &rwmtx_opt, - "db_hash_slot", tb->common.the_name); + erts_smp_rwmtx_init_opt(&tb->locks->lck_vec[i].lck, &rwmtx_opt, + "db_hash_slot", tb->common.the_name, ERTS_LOCK_FLAGS_CATEGORY_DB); } /* This important property is needed to guarantee the two buckets * involved in a grow/shrink operation it protected by the same lock: @@ -3206,3 +3206,23 @@ Eterm erts_ets_hash_sizeof_ext_segtab(void) return make_small(((SIZEOF_EXT_SEGTAB(0)-1) / sizeof(UWord)) + 1); } +#ifdef ERTS_ENABLE_LOCK_COUNT +void erts_lcnt_enable_db_hash_lock_count(DbTableHash *tb, int enable) { + int i; + + if(tb->locks == NULL) { + return; + } + + for(i = 0; i < DB_HASH_LOCK_CNT; i++) { + erts_lcnt_ref_t *ref = &tb->locks->lck_vec[i].lck.lcnt; + + if(enable) { + erts_lcnt_install_new_lock_info(ref, "db_hash_slot", tb->common.the_name, + ERTS_LOCK_TYPE_RWMUTEX | ERTS_LOCK_FLAGS_CATEGORY_DB); + } else { + erts_lcnt_uninstall(ref); + } + } +} +#endif /* ERTS_ENABLE_LOCK_COUNT */ diff --git a/erts/emulator/beam/erl_db_hash.h b/erts/emulator/beam/erl_db_hash.h index f491c85d95..523ed7860e 100644 --- a/erts/emulator/beam/erl_db_hash.h +++ b/erts/emulator/beam/erl_db_hash.h @@ -103,4 +103,8 @@ typedef struct { void db_calc_stats_hash(DbTableHash* tb, DbHashStats*); Eterm erts_ets_hash_sizeof_ext_segtab(void); +#ifdef ERTS_ENABLE_LOCK_COUNT +void erts_lcnt_enable_db_hash_lock_count(DbTableHash *tb, int enable); +#endif + #endif /* _DB_HASH_H */ diff --git a/erts/emulator/beam/erl_dirty_bif.tab b/erts/emulator/beam/erl_dirty_bif.tab index 69421dcfcc..10c76d2579 100644 --- a/erts/emulator/beam/erl_dirty_bif.tab +++ b/erts/emulator/beam/erl_dirty_bif.tab @@ -46,6 +46,11 @@ dirty-cpu erts_debug:dirty_cpu/2 dirty-io erts_debug:dirty_io/2 +# lcnt_control/1 doesn't need to be dirty. +dirty-cpu erts_debug:lcnt_control/2 +dirty-cpu erts_debug:lcnt_collect/0 +dirty-cpu erts_debug:lcnt_clear/0 + # --- TEST of Dirty BIF functionality --- # Functions below will execute on dirty schedulers when emulator has # been configured for testing dirty schedulers. This is used for test diff --git a/erts/emulator/beam/erl_drv_thread.c b/erts/emulator/beam/erl_drv_thread.c index 0e6aadf568..742c428f2a 100644 --- a/erts/emulator/beam/erl_drv_thread.c +++ b/erts/emulator/beam/erl_drv_thread.c @@ -55,7 +55,7 @@ fatal_error(int err, char *func) struct ErlDrvMutex_ { ethr_mutex mtx; #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_lock_t lcnt; + erts_lcnt_ref_t lcnt; #endif char *name; }; @@ -68,7 +68,7 @@ struct ErlDrvCond_ { struct ErlDrvRWLock_ { ethr_rwmutex rwmtx; #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_lock_t lcnt; + erts_lcnt_ref_t lcnt; #endif char *name; }; @@ -146,7 +146,8 @@ void erl_drv_thr_init(void) sizeof(char *)*ERL_DRV_TSD_KEYS_INC); for (i = 0; i < ERL_DRV_TSD_KEYS_INC; i++) used_tsd_keys[i] = NULL; - erts_mtx_init(&tsd_mtx, "drv_tsd"); + erts_mtx_init(&tsd_mtx, "drv_tsd", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_IO); } /* @@ -176,7 +177,8 @@ erl_drv_mutex_create(char *name) dmtx->name = no_name; } #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_init_lock(&dmtx->lcnt, dmtx->name, ERTS_LCNT_LT_MUTEX); + erts_lcnt_init_ref_x(&dmtx->lcnt, dmtx->name, NIL, + ERTS_LOCK_TYPE_MUTEX | ERTS_LOCK_FLAGS_CATEGORY_IO); #endif } return dmtx; @@ -191,7 +193,7 @@ erl_drv_mutex_destroy(ErlDrvMutex *dmtx) #ifdef USE_THREADS int res; #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_destroy_lock(&dmtx->lcnt); + erts_lcnt_uninstall(&dmtx->lcnt); #endif res = dmtx ? ethr_mutex_destroy(&dmtx->mtx) : EINVAL; if (res != 0) @@ -368,7 +370,8 @@ erl_drv_rwlock_create(char *name) drwlck->name = no_name; } #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_init_lock(&drwlck->lcnt, drwlck->name, ERTS_LCNT_LT_RWMUTEX); + erts_lcnt_init_ref_x(&drwlck->lcnt, drwlck->name, NIL, + ERTS_LOCK_TYPE_RWMUTEX | ERTS_LOCK_FLAGS_CATEGORY_IO); #endif } return drwlck; @@ -383,7 +386,7 @@ erl_drv_rwlock_destroy(ErlDrvRWLock *drwlck) #ifdef USE_THREADS int res; #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_destroy_lock(&drwlck->lcnt); + erts_lcnt_uninstall(&drwlck->lcnt); #endif res = drwlck ? ethr_rwmutex_destroy(&drwlck->rwmtx) : EINVAL; if (res != 0) @@ -411,7 +414,7 @@ erl_drv_rwlock_tryrlock(ErlDrvRWLock *drwlck) fatal_error(EINVAL, "erl_drv_rwlock_tryrlock()"); res = ethr_rwmutex_tryrlock(&drwlck->rwmtx); #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_trylock_opt(&drwlck->lcnt, res, ERTS_LCNT_LO_READ); + erts_lcnt_trylock_opt(&drwlck->lcnt, res, ERTS_LOCK_OPTIONS_READ); #endif return res; #else @@ -426,7 +429,7 @@ erl_drv_rwlock_rlock(ErlDrvRWLock *drwlck) if (!drwlck) fatal_error(EINVAL, "erl_drv_rwlock_rlock()"); #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_lock_opt(&drwlck->lcnt, ERTS_LCNT_LO_READ); + erts_lcnt_lock_opt(&drwlck->lcnt, ERTS_LOCK_OPTIONS_READ); #endif ethr_rwmutex_rlock(&drwlck->rwmtx); #ifdef ERTS_ENABLE_LOCK_COUNT @@ -442,7 +445,7 @@ erl_drv_rwlock_runlock(ErlDrvRWLock *drwlck) if (!drwlck) fatal_error(EINVAL, "erl_drv_rwlock_runlock()"); #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_unlock_opt(&drwlck->lcnt, ERTS_LCNT_LO_READ); + erts_lcnt_unlock_opt(&drwlck->lcnt, ERTS_LOCK_OPTIONS_READ); #endif ethr_rwmutex_runlock(&drwlck->rwmtx); #endif @@ -457,7 +460,7 @@ erl_drv_rwlock_tryrwlock(ErlDrvRWLock *drwlck) fatal_error(EINVAL, "erl_drv_rwlock_tryrwlock()"); res = ethr_rwmutex_tryrwlock(&drwlck->rwmtx); #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_trylock_opt(&drwlck->lcnt, res, ERTS_LCNT_LO_READ_WRITE); + erts_lcnt_trylock_opt(&drwlck->lcnt, res, ERTS_LOCK_OPTIONS_RDWR); #endif return res; #else @@ -472,7 +475,7 @@ erl_drv_rwlock_rwlock(ErlDrvRWLock *drwlck) if (!drwlck) fatal_error(EINVAL, "erl_drv_rwlock_rwlock()"); #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_lock_opt(&drwlck->lcnt, ERTS_LCNT_LO_READ_WRITE); + erts_lcnt_lock_opt(&drwlck->lcnt, ERTS_LOCK_OPTIONS_RDWR); #endif ethr_rwmutex_rwlock(&drwlck->rwmtx); #ifdef ERTS_ENABLE_LOCK_COUNT @@ -488,7 +491,7 @@ erl_drv_rwlock_rwunlock(ErlDrvRWLock *drwlck) if (!drwlck) fatal_error(EINVAL, "erl_drv_rwlock_rwunlock()"); #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_unlock_opt(&drwlck->lcnt, ERTS_LCNT_LO_READ_WRITE); + erts_lcnt_unlock_opt(&drwlck->lcnt, ERTS_LOCK_OPTIONS_RDWR); #endif ethr_rwmutex_rwunlock(&drwlck->rwmtx); #endif diff --git a/erts/emulator/beam/erl_fun.c b/erts/emulator/beam/erl_fun.c index d18016c42e..535f677bb3 100644 --- a/erts/emulator/beam/erl_fun.c +++ b/erts/emulator/beam/erl_fun.c @@ -63,7 +63,8 @@ erts_init_fun_table(void) rwmtx_opt.type = ERTS_SMP_RWMTX_TYPE_FREQUENT_READ; rwmtx_opt.lived = ERTS_SMP_RWMTX_LONG_LIVED; - erts_smp_rwmtx_init_opt(&erts_fun_table_lock, &rwmtx_opt, "fun_tab"); + erts_smp_rwmtx_init_opt(&erts_fun_table_lock, &rwmtx_opt, "fun_tab", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); f.hash = (H_FUN) fun_hash; f.cmp = (HCMP_FUN) fun_cmp; diff --git a/erts/emulator/beam/erl_gc.c b/erts/emulator/beam/erl_gc.c index 3c8bdaa62e..8cb977a7f3 100644 --- a/erts/emulator/beam/erl_gc.c +++ b/erts/emulator/beam/erl_gc.c @@ -274,7 +274,8 @@ erts_init_gc(void) } #ifdef ERTS_DIRTY_SCHEDULERS - erts_smp_mtx_init(&dirty_gc.mtx, "dirty_gc_info"); + erts_smp_mtx_init(&dirty_gc.mtx, "dirty_gc_info", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); init_gc_info(&dirty_gc.info); #endif diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c index 6172595552..5206d7564f 100644 --- a/erts/emulator/beam/erl_init.c +++ b/erts/emulator/beam/erl_init.c @@ -2357,8 +2357,12 @@ erl_start(int argc, char **argv) #ifdef ERTS_SMP erts_start_schedulers(); - /* Let system specific code decide what to do with the main thread... */ +#ifdef ERTS_ENABLE_LOCK_COUNT + erts_lcnt_post_startup(); +#endif + + /* Let system specific code decide what to do with the main thread... */ erts_sys_main_thread(); /* May or may not return! */ #else { @@ -2373,6 +2377,11 @@ erl_start(int argc, char **argv) erts_sched_init_time_sup(esdp); erts_ets_sched_spec_data_init(esdp); erts_aux_work_timeout_late_init(esdp); + +#ifdef ERTS_ENABLE_LOCK_COUNT + erts_lcnt_post_startup(); +#endif + process_main(esdp->x_reg_array, esdp->f_reg_array); } #endif diff --git a/erts/emulator/beam/erl_instrument.c b/erts/emulator/beam/erl_instrument.c index 4d4defd8b5..634509f880 100644 --- a/erts/emulator/beam/erl_instrument.c +++ b/erts/emulator/beam/erl_instrument.c @@ -1200,7 +1200,8 @@ erts_instr_init(int stat, int map_stat) stats = erts_alloc(ERTS_ALC_T_INSTR_INFO, sizeof(struct stats_)); - erts_mtx_init(&instr_mutex, "instr"); + erts_mtx_init(&instr_mutex, "instr", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DEBUG); mem_anchor = NULL; @@ -1223,7 +1224,8 @@ erts_instr_init(int stat, int map_stat) if (map_stat) { - erts_mtx_init(&instr_x_mutex, "instr_x"); + erts_mtx_init(&instr_x_mutex, "instr_x", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DEBUG); erts_instr_memory_map = 1; erts_instr_stat = 1; diff --git a/erts/emulator/beam/erl_lock_check.c b/erts/emulator/beam/erl_lock_check.c index f270d8baef..cf091ee43f 100644 --- a/erts/emulator/beam/erl_lock_check.c +++ b/erts/emulator/beam/erl_lock_check.c @@ -104,7 +104,6 @@ static erts_lc_lock_order_t erts_lock_order[] = { { "db_tab", "address" }, { "proc_status", "pid" }, { "proc_trace", "pid" }, - { "ports_snapshot", NULL }, { "db_tab_fix", "address" }, { "db_hash_slot", "address" }, { "node_table", NULL }, @@ -161,6 +160,9 @@ static erts_lc_lock_order_t erts_lock_order[] = { { "mtrace_op", NULL }, { "instr_x", NULL }, { "instr", NULL }, +#ifdef ERTS_SMP + { "pollsets_lock", NULL }, +#endif { "alcu_allocator", "index" }, { "mseg", NULL }, #ifdef ERTS_SMP @@ -173,7 +175,6 @@ static erts_lc_lock_order_t erts_lock_order[] = { { "get_time", NULL }, { "get_corrected_time", NULL }, { "breakpoints", NULL }, - { "pollsets_lock", NULL }, { "pix_lock", "address" }, { "run_queues_lists", NULL }, { "sched_stat", NULL }, @@ -199,41 +200,20 @@ static erts_lc_lock_order_t erts_lock_order[] = { #define ERTS_LOCK_ORDER_SIZE \ (sizeof(erts_lock_order)/sizeof(erts_lc_lock_order_t)) -#define LOCK_IS_TYPE_ORDER_VIOLATION(LCK_FLG, LCKD_FLG) \ - (((LCKD_FLG) & (ERTS_LC_FLG_LT_SPINLOCK|ERTS_LC_FLG_LT_RWSPINLOCK)) \ - && ((LCK_FLG) \ - & ERTS_LC_FLG_LT_ALL \ - & ~(ERTS_LC_FLG_LT_SPINLOCK|ERTS_LC_FLG_LT_RWSPINLOCK))) +#define LOCK_IS_TYPE_ORDER_VIOLATION(LCK_FLG, LCKD_FLG) \ + (((LCKD_FLG) & ERTS_LOCK_FLAGS_MASK_TYPE) == ERTS_LOCK_FLAGS_TYPE_SPINLOCK \ + && \ + ((LCK_FLG) & ERTS_LOCK_FLAGS_MASK_TYPE) != ERTS_LOCK_FLAGS_TYPE_SPINLOCK) static __decl_noreturn void __noreturn lc_abort(void); -static char * -lock_type(Uint16 flags) +static const char *rw_op_str(erts_lock_options_t options) { - switch (flags & ERTS_LC_FLG_LT_ALL) { - case ERTS_LC_FLG_LT_SPINLOCK: return "[spinlock]"; - case ERTS_LC_FLG_LT_RWSPINLOCK: return "[rw(spin)lock]"; - case ERTS_LC_FLG_LT_MUTEX: return "[mutex]"; - case ERTS_LC_FLG_LT_RWMUTEX: return "[rwmutex]"; - case ERTS_LC_FLG_LT_PROCLOCK: return "[proclock]"; - default: return ""; + if(options == ERTS_LOCK_OPTIONS_WRITE) { + ERTS_INTERNAL_ERROR("Only write flag present"); } -} -static char * -rw_op_str(Uint16 flags) -{ - switch (flags & ERTS_LC_FLG_LO_READ_WRITE) { - case ERTS_LC_FLG_LO_READ_WRITE: - return " (rw)"; - case ERTS_LC_FLG_LO_READ: - return " (r)"; - case ERTS_LC_FLG_LO_WRITE: - ERTS_INTERNAL_ERROR("Only write flag present"); - default: - break; - } - return ""; + return erts_lock_options_get_short_desc(options); } typedef struct erts_lc_locked_lock_t_ erts_lc_locked_lock_t; @@ -244,7 +224,8 @@ struct erts_lc_locked_lock_t_ { Sint16 id; char *file; unsigned int line; - Uint16 flags; + erts_lock_flags_t flags; + erts_lock_options_t taken_options; }; typedef struct { @@ -431,7 +412,7 @@ make_my_locked_locks(void) } static ERTS_INLINE erts_lc_locked_lock_t * -new_locked_lock(erts_lc_lock_t *lck, Uint16 op_flags, +new_locked_lock(erts_lc_lock_t *lck, erts_lock_options_t options, char *file, unsigned int line) { erts_lc_locked_lock_t *l_lck = (erts_lc_locked_lock_t *) lc_alloc(); @@ -441,12 +422,13 @@ new_locked_lock(erts_lc_lock_t *lck, Uint16 op_flags, l_lck->extra = lck->extra; l_lck->file = file; l_lck->line = line; - l_lck->flags = lck->flags | op_flags; + l_lck->flags = lck->flags; + l_lck->taken_options = options; return l_lck; } static void -raw_print_lock(char *prefix, Sint16 id, Wterm extra, Uint16 flags, +raw_print_lock(char *prefix, Sint16 id, Wterm extra, erts_lock_flags_t flags, char* file, unsigned int line, char *suffix) { char *lname = (0 <= id && id < ERTS_LOCK_ORDER_SIZE @@ -458,16 +440,16 @@ raw_print_lock(char *prefix, Sint16 id, Wterm extra, Uint16 flags, erts_fprintf(stderr,"%p",_unchecked_boxed_val(extra)); else erts_fprintf(stderr,"%T",extra); - erts_fprintf(stderr,"%s",lock_type(flags)); + erts_fprintf(stderr,"[%s]",erts_lock_flags_get_type_name(flags)); if (file) erts_fprintf(stderr,"(%s:%d)",file,line); - erts_fprintf(stderr,"'%s%s",rw_op_str(flags),suffix); + erts_fprintf(stderr,"'(%s)%s",rw_op_str(flags),suffix); } static void -print_lock2(char *prefix, Sint16 id, Wterm extra, Uint16 flags, char *suffix) +print_lock2(char *prefix, Sint16 id, Wterm extra, erts_lock_flags_t flags, char *suffix) { raw_print_lock(prefix, id, extra, flags, NULL, 0, suffix); } @@ -522,9 +504,9 @@ uninitialized_lock(void) static void lock_twice(char *prefix, erts_lc_locked_locks_t *l_lcks, erts_lc_lock_t *lck, - Uint16 op_flags) + erts_lock_options_t options) { - erts_fprintf(stderr, "%s%s", prefix, rw_op_str(op_flags)); + erts_fprintf(stderr, "%s (%s)", prefix, rw_op_str(options)); print_lock(" ", lck, " lock which is already locked by thread!\n"); print_curr_locks(l_lcks); lc_abort(); @@ -532,9 +514,9 @@ lock_twice(char *prefix, erts_lc_locked_locks_t *l_lcks, erts_lc_lock_t *lck, static void unlock_op_mismatch(erts_lc_locked_locks_t *l_lcks, erts_lc_lock_t *lck, - Uint16 op_flags) + erts_lock_options_t options) { - erts_fprintf(stderr, "Unlocking%s ", rw_op_str(op_flags)); + erts_fprintf(stderr, "Unlocking (%s) ", rw_op_str(options)); print_lock("", lck, " lock which mismatch previous lock operation!\n"); print_curr_locks(l_lcks); lc_abort(); @@ -745,84 +727,128 @@ erts_lc_get_lock_order_id(char *name) return (Sint16) -1; } +static int compare_locked_by_id(erts_lc_locked_lock_t *locked_lock, erts_lc_lock_t *comparand) +{ + if(locked_lock->id < comparand->id) { + return -1; + } else if(locked_lock->id > comparand->id) { + return 1; + } -static int -find_lock(erts_lc_locked_lock_t **l_lcks, erts_lc_lock_t *lck) + return 0; +} + +static int compare_locked_by_id_extra(erts_lc_locked_lock_t *locked_lock, erts_lc_lock_t *comparand) { - erts_lc_locked_lock_t *l_lck = *l_lcks; + int order = compare_locked_by_id(locked_lock, comparand); + + if(order) { + return order; + } else if(locked_lock->extra < comparand->extra) { + return -1; + } else if(locked_lock->extra > comparand->extra) { + return 1; + } - if (l_lck) { - if (l_lck->id == lck->id && l_lck->extra == lck->extra) { - if ((l_lck->flags & lck->flags) == lck->flags) - return 1; - return 0; - } - else if (l_lck->id < lck->id - || (l_lck->id == lck->id - && l_lck->extra < lck->extra)) { - for (l_lck = l_lck->next; l_lck; l_lck = l_lck->next) { - if (l_lck->id > lck->id - || (l_lck->id == lck->id - && l_lck->extra >= lck->extra)) { - *l_lcks = l_lck; - if (l_lck->id == lck->id - && l_lck->extra == lck->extra - && ((l_lck->flags & lck->flags) == lck->flags)) - return 1; - return 0; - } - } - } - else { - for (l_lck = l_lck->prev; l_lck; l_lck = l_lck->prev) { - if (l_lck->id < lck->id - || (l_lck->id == lck->id - && l_lck->extra <= lck->extra)) { - *l_lcks = l_lck; - if (l_lck->id == lck->id - && l_lck->extra == lck->extra - && ((l_lck->flags & lck->flags) == lck->flags)) - return 1; - return 0; - } - } - } + return 0; +} + +typedef int (*locked_compare_func)(erts_lc_locked_lock_t *, erts_lc_lock_t *); + +/* Searches through a list of taken locks, bailing when it hits an entry whose + * order relative to the search template is the opposite of the one at the + * start of the search. (*closest_neighbor) is either set to the exact match, + * or the one closest to it in the sort order. */ +static int search_locked_list(locked_compare_func compare, + erts_lc_locked_lock_t *locked_locks, + erts_lc_lock_t *search_template, + erts_lc_locked_lock_t **closest_neighbor) +{ + erts_lc_locked_lock_t *iterator = locked_locks; + + (*closest_neighbor) = iterator; + + if(iterator) { + int relative_order = compare(iterator, search_template); + + if(relative_order < 0) { + while((iterator = iterator->next) != NULL) { + relative_order = compare(iterator, search_template); + + if(relative_order >= 0) { + (*closest_neighbor) = iterator; + break; + } + } + } else if(relative_order > 0) { + while((iterator = iterator->prev) != NULL) { + relative_order = compare(iterator, search_template); + + if(relative_order <= 0) { + (*closest_neighbor) = iterator; + break; + } + } + } + + return relative_order == 0; } + return 0; } +/* Searches for a lock in the given list that matches search_template, and sets + * (*locked_locks) to the closest lock in the sort order. */ static int -find_id(erts_lc_locked_lock_t **l_lcks, Sint16 id) -{ - erts_lc_locked_lock_t *l_lck = *l_lcks; - - if (l_lck) { - if (l_lck->id == id) - return 1; - else if (l_lck->id < id) { - for (l_lck = l_lck->next; l_lck; l_lck = l_lck->next) { - if (l_lck->id >= id) { - *l_lcks = l_lck; - if (l_lck->id == id) - return 1; - return 0; - } - } - } - else { - for (l_lck = l_lck->prev; l_lck; l_lck = l_lck->prev) { - if (l_lck->id <= id) { - *l_lcks = l_lck; - if (l_lck->id == id) - return 1; - return 0; - } - } - } +find_lock(erts_lc_locked_lock_t **locked_locks, erts_lc_lock_t *search_template) +{ + erts_lc_locked_lock_t *closest_neighbor; + int found_lock; + + found_lock = search_locked_list(compare_locked_by_id_extra, + (*locked_locks), + search_template, + &closest_neighbor); + + (*locked_locks) = closest_neighbor; + + if(found_lock) { + erts_lock_options_t relevant_options; + erts_lock_flags_t relevant_flags; + + /* We only care about the options and flags that are set in the + * template. */ + relevant_options = (closest_neighbor->taken_options & search_template->taken_options); + relevant_flags = (closest_neighbor->flags & search_template->flags); + + return search_template->taken_options == relevant_options && + search_template->flags == relevant_flags; } + return 0; } +/* Searches for a lock in the given list by id, and sets (*locked_locks) to the + * closest lock in the sort order. */ +static int +find_id(erts_lc_locked_lock_t **locked_locks, Sint16 id) +{ + erts_lc_locked_lock_t *closest_neighbor; + erts_lc_lock_t search_template; + int found_lock; + + search_template.id = id; + + found_lock = search_locked_list(compare_locked_by_id, + (*locked_locks), + &search_template, + &closest_neighbor); + + (*locked_locks) = closest_neighbor; + + return found_lock; +} + void erts_lc_have_locks(int *resv, erts_lc_lock_t *locks, int len) { @@ -918,17 +944,17 @@ erts_lc_check_exact(erts_lc_lock_t *have, int have_len) } void -erts_lc_check_no_locked_of_type(Uint16 flags) +erts_lc_check_no_locked_of_type(erts_lock_flags_t type) { erts_lc_locked_locks_t *l_lcks = get_my_locked_locks(); if (l_lcks) { erts_lc_locked_lock_t *l_lck = l_lcks->locked.first; for (l_lck = l_lcks->locked.first; l_lck; l_lck = l_lck->next) { - if (l_lck->flags & flags) { + if ((l_lck->flags & ERTS_LOCK_FLAGS_MASK_TYPE) == type) { erts_fprintf(stderr, "Locked lock of type %s found which isn't " "allowed here!\n", - lock_type(l_lck->flags)); + erts_lock_flags_get_type_name(l_lck->flags)); print_curr_locks(l_lcks); lc_abort(); } @@ -937,7 +963,7 @@ erts_lc_check_no_locked_of_type(Uint16 flags) } int -erts_lc_trylock_force_busy_flg(erts_lc_lock_t *lck, Uint16 op_flags) +erts_lc_trylock_force_busy_flg(erts_lc_lock_t *lck, erts_lock_options_t options) { #ifdef ERTS_LC_DO_NOT_FORCE_BUSY_TRYLOCK_ON_LOCK_ORDER_VIOLATION return 0; @@ -986,7 +1012,7 @@ erts_lc_trylock_force_busy_flg(erts_lc_lock_t *lck, Uint16 op_flags) if (tl_lck->id < lck->id || (tl_lck->id == lck->id && tl_lck->extra <= lck->extra)) { if (tl_lck->id == lck->id && tl_lck->extra == lck->extra) - lock_twice("Trylocking", l_lcks, lck, op_flags); + lock_twice("Trylocking", l_lcks, lck, options); break; } } @@ -1008,7 +1034,7 @@ erts_lc_trylock_force_busy_flg(erts_lc_lock_t *lck, Uint16 op_flags) #endif } -void erts_lc_trylock_flg_x(int locked, erts_lc_lock_t *lck, Uint16 op_flags, +void erts_lc_trylock_flg_x(int locked, erts_lc_lock_t *lck, erts_lock_options_t options, char *file, unsigned int line) { erts_lc_locked_locks_t *l_lcks; @@ -1021,7 +1047,7 @@ void erts_lc_trylock_flg_x(int locked, erts_lc_lock_t *lck, Uint16 op_flags, return; l_lcks = make_my_locked_locks(); - l_lck = locked ? new_locked_lock(lck, op_flags, file, line) : NULL; + l_lck = locked ? new_locked_lock(lck, options, file, line) : NULL; if (!l_lcks->locked.last) { ASSERT(!l_lcks->locked.first); @@ -1039,7 +1065,7 @@ void erts_lc_trylock_flg_x(int locked, erts_lc_lock_t *lck, Uint16 op_flags, if (tl_lck->id < lck->id || (tl_lck->id == lck->id && tl_lck->extra <= lck->extra)) { if (tl_lck->id == lck->id && tl_lck->extra == lck->extra) - lock_twice("Trylocking", l_lcks, lck, op_flags); + lock_twice("Trylocking", l_lcks, lck, options); if (locked) { l_lck->next = tl_lck->next; l_lck->prev = tl_lck; @@ -1062,14 +1088,14 @@ void erts_lc_trylock_flg_x(int locked, erts_lc_lock_t *lck, Uint16 op_flags, } -void erts_lc_require_lock_flg(erts_lc_lock_t *lck, Uint16 op_flags, +void erts_lc_require_lock_flg(erts_lc_lock_t *lck, erts_lock_options_t options, char *file, unsigned int line) { erts_lc_locked_locks_t *l_lcks = make_my_locked_locks(); erts_lc_locked_lock_t *l_lck = l_lcks->locked.first; if (!find_lock(&l_lck, lck)) required_not_locked(l_lcks, lck); - l_lck = new_locked_lock(lck, op_flags, file, line); + l_lck = new_locked_lock(lck, options, file, line); if (!l_lcks->required.last) { ASSERT(!l_lcks->required.first); l_lck->next = l_lck->prev = NULL; @@ -1109,7 +1135,7 @@ void erts_lc_require_lock_flg(erts_lc_lock_t *lck, Uint16 op_flags, } } -void erts_lc_unrequire_lock_flg(erts_lc_lock_t *lck, Uint16 op_flags) +void erts_lc_unrequire_lock_flg(erts_lc_lock_t *lck, erts_lock_options_t options) { erts_lc_locked_locks_t *l_lcks = make_my_locked_locks(); erts_lc_locked_lock_t *l_lck = l_lcks->locked.first; @@ -1137,7 +1163,7 @@ void erts_lc_unrequire_lock_flg(erts_lc_lock_t *lck, Uint16 op_flags) lc_free((void *) l_lck); } -void erts_lc_lock_flg_x(erts_lc_lock_t *lck, Uint16 op_flags, +void erts_lc_lock_flg_x(erts_lc_lock_t *lck, erts_lock_options_t options, char *file, unsigned int line) { erts_lc_locked_locks_t *l_lcks; @@ -1150,7 +1176,7 @@ void erts_lc_lock_flg_x(erts_lc_lock_t *lck, Uint16 op_flags, return; l_lcks = make_my_locked_locks(); - l_lck = new_locked_lock(lck, op_flags, file, line); + l_lck = new_locked_lock(lck, options, file, line); if (!l_lcks->locked.last) { ASSERT(!l_lcks->locked.first); @@ -1166,12 +1192,12 @@ void erts_lc_lock_flg_x(erts_lc_lock_t *lck, Uint16 op_flags, l_lcks->locked.last = l_lck; } else if (l_lcks->locked.last->id == lck->id && l_lcks->locked.last->extra == lck->extra) - lock_twice("Locking", l_lcks, lck, op_flags); + lock_twice("Locking", l_lcks, lck, options); else lock_order_violation(l_lcks, lck); } -void erts_lc_unlock_flg(erts_lc_lock_t *lck, Uint16 op_flags) +void erts_lc_unlock_flg(erts_lc_lock_t *lck, erts_lock_options_t options) { erts_lc_locked_locks_t *l_lcks; erts_lc_locked_lock_t *l_lck; @@ -1192,8 +1218,8 @@ void erts_lc_unlock_flg(erts_lc_lock_t *lck, Uint16 op_flags) for (l_lck = l_lcks ? l_lcks->locked.last : NULL; l_lck; l_lck = l_lck->prev) { if (l_lck->id == lck->id && l_lck->extra == lck->extra) { - if ((l_lck->flags & ERTS_LC_FLG_LO_ALL) != op_flags) - unlock_op_mismatch(l_lcks, lck, op_flags); + if ((l_lck->taken_options & ERTS_LOCK_OPTIONS_RDWR) != options) + unlock_op_mismatch(l_lcks, lck, options); if (l_lck->prev) l_lck->prev->next = l_lck->next; else @@ -1210,7 +1236,7 @@ void erts_lc_unlock_flg(erts_lc_lock_t *lck, Uint16 op_flags) unlock_of_not_locked(l_lcks, lck); } -void erts_lc_might_unlock_flg(erts_lc_lock_t *lck, Uint16 op_flags) +void erts_lc_might_unlock_flg(erts_lc_lock_t *lck, erts_lock_options_t options) { erts_lc_locked_locks_t *l_lcks; erts_lc_locked_lock_t *l_lck; @@ -1274,23 +1300,25 @@ void erts_lc_unrequire_lock(erts_lc_lock_t *lck) } void -erts_lc_init_lock(erts_lc_lock_t *lck, char *name, Uint16 flags) +erts_lc_init_lock(erts_lc_lock_t *lck, char *name, erts_lock_flags_t flags) { lck->id = erts_lc_get_lock_order_id(name); lck->extra = (UWord) &lck->extra; ASSERT(is_not_immed(lck->extra)); lck->flags = flags; + lck->taken_options = 0; lck->inited = ERTS_LC_INITITALIZED; } void -erts_lc_init_lock_x(erts_lc_lock_t *lck, char *name, Uint16 flags, Eterm extra) +erts_lc_init_lock_x(erts_lc_lock_t *lck, char *name, erts_lock_flags_t flags, Eterm extra) { lck->id = erts_lc_get_lock_order_id(name); lck->extra = extra; ASSERT(is_immed(lck->extra)); lck->flags = flags; + lck->taken_options = 0; lck->inited = ERTS_LC_INITITALIZED; } @@ -1304,6 +1332,7 @@ erts_lc_destroy_lock(erts_lc_lock_t *lck) lck->id = -1; lck->extra = THE_NON_VALUE; lck->flags = 0; + lck->taken_options = 0; } void diff --git a/erts/emulator/beam/erl_lock_check.h b/erts/emulator/beam/erl_lock_check.h index 18296d1fec..8c754a8dfa 100644 --- a/erts/emulator/beam/erl_lock_check.h +++ b/erts/emulator/beam/erl_lock_check.h @@ -36,6 +36,8 @@ #ifdef ERTS_ENABLE_LOCK_CHECK +#include "erl_lock_flags.h" + #ifndef ERTS_ENABLE_LOCK_POSITION /* Enable in order for _x variants of mtx functions to be used. */ #define ERTS_ENABLE_LOCK_POSITION 1 @@ -44,36 +46,14 @@ typedef struct { int inited; Sint16 id; - Uint16 flags; + erts_lock_flags_t flags; + erts_lock_options_t taken_options; UWord extra; } erts_lc_lock_t; #define ERTS_LC_INITITALIZED 0x7f7f7f7f - -#define ERTS_LC_FLG_LT_SPINLOCK (((Uint16) 1) << 0) -#define ERTS_LC_FLG_LT_RWSPINLOCK (((Uint16) 1) << 1) -#define ERTS_LC_FLG_LT_MUTEX (((Uint16) 1) << 2) -#define ERTS_LC_FLG_LT_RWMUTEX (((Uint16) 1) << 3) -#define ERTS_LC_FLG_LT_PROCLOCK (((Uint16) 1) << 4) - -#define ERTS_LC_FLG_LO_READ (((Uint16) 1) << 5) -#define ERTS_LC_FLG_LO_WRITE (((Uint16) 1) << 6) - -#define ERTS_LC_FLG_LO_READ_WRITE (ERTS_LC_FLG_LO_READ \ - | ERTS_LC_FLG_LO_WRITE) - -#define ERTS_LC_FLG_LT_ALL (ERTS_LC_FLG_LT_SPINLOCK \ - | ERTS_LC_FLG_LT_RWSPINLOCK \ - | ERTS_LC_FLG_LT_MUTEX \ - | ERTS_LC_FLG_LT_RWMUTEX \ - | ERTS_LC_FLG_LT_PROCLOCK) - -#define ERTS_LC_FLG_LO_ALL (ERTS_LC_FLG_LO_READ \ - | ERTS_LC_FLG_LO_WRITE) - - -#define ERTS_LC_LOCK_INIT(ID, X, F) {ERTS_LC_INITITALIZED, (ID), (F), (X)} +#define ERTS_LC_LOCK_INIT(ID, X, F) {ERTS_LC_INITITALIZED, (ID), (F), 0, (X)} void erts_lc_init(void); void erts_lc_late_init(void); @@ -83,31 +63,31 @@ void erts_lc_check(erts_lc_lock_t *have, int have_len, void erts_lc_check_exact(erts_lc_lock_t *have, int have_len); void erts_lc_have_locks(int *resv, erts_lc_lock_t *lcks, int len); void erts_lc_have_lock_ids(int *resv, int *ids, int len); -void erts_lc_check_no_locked_of_type(Uint16 flags); -int erts_lc_trylock_force_busy_flg(erts_lc_lock_t *lck, Uint16 op_flags); -void erts_lc_trylock_flg_x(int locked, erts_lc_lock_t *lck, Uint16 op_flags, +void erts_lc_check_no_locked_of_type(erts_lock_flags_t flags); +int erts_lc_trylock_force_busy_flg(erts_lc_lock_t *lck, erts_lock_options_t options); +void erts_lc_trylock_flg_x(int locked, erts_lc_lock_t *lck, erts_lock_options_t options, char *file, unsigned int line); -void erts_lc_lock_flg_x(erts_lc_lock_t *lck, Uint16 op_flags, +void erts_lc_lock_flg_x(erts_lc_lock_t *lck, erts_lock_options_t options, char *file, unsigned int line); -void erts_lc_unlock_flg(erts_lc_lock_t *lck, Uint16 op_flags); -void erts_lc_might_unlock_flg(erts_lc_lock_t *lck, Uint16 op_flags); +void erts_lc_unlock_flg(erts_lc_lock_t *lck, erts_lock_options_t options); +void erts_lc_might_unlock_flg(erts_lc_lock_t *lck, erts_lock_options_t options); int erts_lc_trylock_force_busy(erts_lc_lock_t *lck); void erts_lc_trylock_x(int locked, erts_lc_lock_t *lck, char* file, unsigned int line); void erts_lc_lock_x(erts_lc_lock_t *lck, char* file, unsigned int line); void erts_lc_unlock(erts_lc_lock_t *lck); void erts_lc_might_unlock(erts_lc_lock_t *lck); -void erts_lc_init_lock(erts_lc_lock_t *lck, char *name, Uint16 flags); -void erts_lc_init_lock_x(erts_lc_lock_t *lck, char *name, Uint16 flags, Eterm extra); +void erts_lc_init_lock(erts_lc_lock_t *lck, char *name, erts_lock_flags_t flags); +void erts_lc_init_lock_x(erts_lc_lock_t *lck, char *name, erts_lock_flags_t flags, Eterm extra); void erts_lc_destroy_lock(erts_lc_lock_t *lck); void erts_lc_fail(char *fmt, ...); int erts_lc_assert_failed(char *file, int line, char *assertion); void erts_lc_set_thread_name(char *thread_name); void erts_lc_pll(void); -void erts_lc_require_lock_flg(erts_lc_lock_t *lck, Uint16 op_flags, +void erts_lc_require_lock_flg(erts_lc_lock_t *lck, erts_lock_options_t options, char *file, unsigned int line); -void erts_lc_unrequire_lock_flg(erts_lc_lock_t *lck, Uint16 op_flags); +void erts_lc_unrequire_lock_flg(erts_lc_lock_t *lck, erts_lock_options_t options); void erts_lc_require_lock(erts_lc_lock_t *lck, char *file, unsigned int line); void erts_lc_unrequire_lock(erts_lc_lock_t *lck); diff --git a/erts/emulator/beam/erl_lock_count.c b/erts/emulator/beam/erl_lock_count.c index 678bc43f04..d2e8f47d59 100644 --- a/erts/emulator/beam/erl_lock_count.c +++ b/erts/emulator/beam/erl_lock_count.c @@ -18,51 +18,37 @@ * %CopyrightEnd% */ -/* - * Description: Statistics for locks. - * - * Author: Björn-Egil Dahlberg - * Date: 2008-07-03 - */ - #ifdef HAVE_CONFIG_H # include "config.h" #endif -/* Needed for VxWorks va_arg */ +#ifdef ERTS_ENABLE_LOCK_COUNT + #include "sys.h" -#ifdef ERTS_ENABLE_LOCK_COUNT +#include "global.h" #include "erl_lock_count.h" -#include "ethread.h" -#include "erl_term.h" -#include "atom.h" -#include <stdio.h> - -/* globals, dont access these without locks or blocks */ +#include "erl_thr_progress.h" -ethr_mutex lcnt_data_lock; -erts_lcnt_data_t *erts_lcnt_data; -Uint16 erts_lcnt_rt_options; -erts_lcnt_time_t timer_start; -const char *str_undefined = "undefined"; +#include "erl_node_tables.h" +#include "erl_alloc_util.h" +#include "erl_check_io.h" +#include "erl_poll.h" +#include "erl_db.h" -static ethr_tsd_key lcnt_thr_data_key; -static int lcnt_n_thr; -static erts_lcnt_thread_data_t *lcnt_thread_data[2048]; +#define LCNT_MAX_CARRIER_ENTRIES 255 -/* local functions */ +/* - Locals that are shared with the header implementation - */ -static ERTS_INLINE void lcnt_lock(void) { - ethr_mutex_lock(&lcnt_data_lock); -} +#ifdef DEBUG +int lcnt_initialization_completed__; +#endif -static ERTS_INLINE void lcnt_unlock(void) { - ethr_mutex_unlock(&lcnt_data_lock); -} +erts_lock_flags_t lcnt_category_mask__; +ethr_tsd_key lcnt_thr_data_key__; -const int log2_tab64[64] = { +const int lcnt_log2_tab64__[64] = { 63, 0, 58, 1, 59, 47, 53, 2, 60, 39, 48, 27, 54, 33, 42, 3, 61, 51, 37, 40, 49, 18, 28, 20, @@ -72,635 +58,624 @@ const int log2_tab64[64] = { 56, 45, 25, 31, 35, 16, 9, 12, 44, 24, 15, 8, 23, 7, 6, 5}; -static ERTS_INLINE int lcnt_log2(Uint64 v) { - v |= v >> 1; - v |= v >> 2; - v |= v >> 4; - v |= v >> 8; - v |= v >> 16; - v |= v >> 32; - return log2_tab64[((Uint64)((v - (v >> 1))*0x07EDD5E59A4E28C2)) >> 58]; -} - -static char* lcnt_lock_type(Uint16 flag) { - switch(flag & ERTS_LCNT_LT_ALL) { - case ERTS_LCNT_LT_SPINLOCK: return "spinlock"; - case ERTS_LCNT_LT_RWSPINLOCK: return "rw_spinlock"; - case ERTS_LCNT_LT_MUTEX: return "mutex"; - case ERTS_LCNT_LT_RWMUTEX: return "rw_mutex"; - case ERTS_LCNT_LT_PROCLOCK: return "proclock"; - default: return ""; - } -} +/* - Local variables - */ -static void lcnt_clear_stats(erts_lcnt_lock_stats_t *stats) { - ethr_atomic_set(&stats->tries, 0); - ethr_atomic_set(&stats->colls, 0); - stats->timer.s = 0; - stats->timer.ns = 0; - stats->timer_n = 0; - stats->file = (char *)str_undefined; - stats->line = 0; - sys_memzero(stats->hist.ns, sizeof(stats->hist.ns)); -} +typedef struct lcnt_static_lock_ref_ { + erts_lcnt_ref_t *reference; -static void lcnt_time(erts_lcnt_time_t *time) { - /* - * erts_sys_hrtime() is the highest resolution - * we could find, it may or may not be monotonic... - */ - ErtsMonotonicTime mtime = erts_sys_hrtime(); - time->s = (unsigned long) (mtime / 1000000000LL); - time->ns = (unsigned long) (mtime - 1000000000LL*time->s); -} + erts_lock_flags_t flags; + const char *name; + Eterm id; -static void lcnt_time_diff(erts_lcnt_time_t *d, erts_lcnt_time_t *t1, erts_lcnt_time_t *t0) { - long ds; - long dns; + struct lcnt_static_lock_ref_ *next; +} lcnt_static_lock_ref_t; - ds = t1->s - t0->s; - dns = t1->ns - t0->ns; +static ethr_atomic_t lcnt_static_lock_registry; - /* the difference should not be able to get bigger than 1 sec in ns*/ +static erts_lcnt_lock_info_list_t lcnt_current_lock_list; +static erts_lcnt_lock_info_list_t lcnt_deleted_lock_list; - if (dns < 0) { - ds -= 1; - dns += 1000000000LL; - } +static erts_lcnt_time_t lcnt_timer_start; - ASSERT(ds >= 0); +static int lcnt_preserve_info; - d->s = ds; - d->ns = dns; -} +/* local functions */ + +static void lcnt_clear_stats(erts_lcnt_lock_info_t *info) { + size_t i; + + for(i = 0; i < ERTS_LCNT_MAX_LOCK_LOCATIONS; i++) { + erts_lcnt_lock_stats_t *stats = &info->location_stats[i]; -/* difference d must be non-negative */ + sys_memzero(&stats->wait_time_histogram, sizeof(stats->wait_time_histogram)); -static void lcnt_time_add(erts_lcnt_time_t *t, erts_lcnt_time_t *d) { - t->s += d->s; - t->ns += d->ns; + stats->total_time_waited.s = 0; + stats->total_time_waited.ns = 0; - t->s += t->ns / 1000000000LL; - t->ns = t->ns % 1000000000LL; + stats->times_waited = 0; + + stats->file = NULL; + stats->line = 0; + + ethr_atomic_set(&stats->attempts, 0); + ethr_atomic_set(&stats->collisions, 0); + } + + info->location_count = 1; } -static erts_lcnt_thread_data_t *lcnt_thread_data_alloc(void) { - erts_lcnt_thread_data_t *eltd; +static lcnt_thread_data_t__ *lcnt_thread_data_alloc(void) { + lcnt_thread_data_t__ *eltd = + (lcnt_thread_data_t__*)malloc(sizeof(lcnt_thread_data_t__)); - eltd = (erts_lcnt_thread_data_t*)malloc(sizeof(erts_lcnt_thread_data_t)); - if (!eltd) { - ERTS_INTERNAL_ERROR("Lock counter failed to allocate memory!"); + if(!eltd) { + ERTS_INTERNAL_ERROR("Failed to allocate lcnt thread data."); } + eltd->timer_set = 0; eltd->lock_in_conflict = 0; - eltd->id = lcnt_n_thr++; - /* set thread data to array */ - lcnt_thread_data[eltd->id] = eltd; - return eltd; } -static erts_lcnt_thread_data_t *lcnt_get_thread_data(void) { - return (erts_lcnt_thread_data_t *)ethr_tsd_get(lcnt_thr_data_key); -} +/* - List operations - + * + * Info entries are kept in a doubly linked list where each entry is locked + * with its neighbors rather than a global lock. Deletion is rather quick, but + * insertion is still serial since the head becomes a de facto global lock. + * + * We rely on ad-hoc spinlocks to avoid "recursing" into this module. */ -/* debug */ +#define LCNT_SPINLOCK_YIELD_ITERATIONS 50 -#if 0 -static char* lock_opt(Uint16 flag) { - if ((flag & ERTS_LCNT_LO_WRITE) && (flag & ERTS_LCNT_LO_READ)) return "rw"; - if (flag & ERTS_LCNT_LO_READ ) return "r "; - if (flag & ERTS_LCNT_LO_WRITE) return " w"; - return "--"; -} +#define LCNT_SPINLOCK_HELPER_INIT \ + Uint failed_spin_count = 0; -static void print_lock_x(erts_lcnt_lock_t *lock, Uint16 flag, char *action) { - erts_aint_t w_state, r_state; - char *type; +#define LCNT_SPINLOCK_HELPER_YIELD \ + do { \ + failed_spin_count++; \ + if(!(failed_spin_count % LCNT_SPINLOCK_YIELD_ITERATIONS)) { \ + erts_thr_yield(); \ + } else { \ + ERTS_SPIN_BODY; \ + } \ + } while(0) - if (strcmp(lock->name, "run_queue") != 0) return; - type = lcnt_lock_type(lock->flag); - r_state = ethr_atomic_read(&lock->r_state); - w_state = ethr_atomic_read(&lock->w_state); +static void lcnt_unlock_list_entry(erts_lcnt_lock_info_t *info) { + ethr_atomic32_set_relb(&info->lock, 0); +} - if (lock->flag & flag) { - erts_fprintf(stderr,"%10s [%24s] [r/w state %4ld/%4ld] %2s id %T\r\n", - action, - lock->name, - r_state, - w_state, - type, - lock->id); - } +static int lcnt_try_lock_list_entry(erts_lcnt_lock_info_t *info) { + return ethr_atomic32_cmpxchg_acqb(&info->lock, 1, 0) == 0; } -#endif -static erts_lcnt_lock_stats_t *lcnt_get_lock_stats(erts_lcnt_lock_t *lock, char *file, unsigned int line) { - unsigned int i; - erts_lcnt_lock_stats_t *stats = NULL; +static void lcnt_lock_list_entry(erts_lcnt_lock_info_t *info) { + LCNT_SPINLOCK_HELPER_INIT; - if (erts_lcnt_rt_options & ERTS_LCNT_OPT_LOCATION) { - for (i = 0; i < lock->n_stats; i++) { - if ((lock->stats[i].file == file) && (lock->stats[i].line == line)) { - return &(lock->stats[i]); - } - } - if (lock->n_stats < ERTS_LCNT_MAX_LOCK_LOCATIONS) { - stats = &lock->stats[lock->n_stats]; - lock->n_stats++; - stats->file = file; - stats->line = line; - return stats; - } + while(!lcnt_try_lock_list_entry(info)) { + LCNT_SPINLOCK_HELPER_YIELD; } - return &lock->stats[0]; } -static void lcnt_update_stats_hist(erts_lcnt_hist_t *hist, erts_lcnt_time_t *time_wait) { - int idx; - unsigned long r; +static void lcnt_lock_list_entry_with_neighbors(erts_lcnt_lock_info_t *info) { + LCNT_SPINLOCK_HELPER_INIT; - if (time_wait->s > 0 || time_wait->ns > ERTS_LCNT_HISTOGRAM_MAX_NS) { - idx = ERTS_LCNT_HISTOGRAM_SLOT_SIZE - 1; - } else { - r = time_wait->ns >> ERTS_LCNT_HISTOGRAM_RSHIFT; - if (r) idx = lcnt_log2(r); - else idx = 0; + for(;;) { + if(!lcnt_try_lock_list_entry(info)) + goto retry_after_entry_failed; + if(!lcnt_try_lock_list_entry(info->next)) + goto retry_after_next_failed; + if(!lcnt_try_lock_list_entry(info->prev)) + goto retry_after_prev_failed; + + return; + + retry_after_prev_failed: + lcnt_unlock_list_entry(info->next); + retry_after_next_failed: + lcnt_unlock_list_entry(info); + retry_after_entry_failed: + LCNT_SPINLOCK_HELPER_YIELD; } - hist->ns[idx]++; } -static void lcnt_update_stats(erts_lcnt_lock_stats_t *stats, int lock_in_conflict, - erts_lcnt_time_t *time_wait) { +static void lcnt_unlock_list_entry_with_neighbors(erts_lcnt_lock_info_t *info) { + lcnt_unlock_list_entry(info->prev); + lcnt_unlock_list_entry(info->next); + lcnt_unlock_list_entry(info); +} - ethr_atomic_inc(&stats->tries); +static void lcnt_insert_list_entry(erts_lcnt_lock_info_list_t *list, erts_lcnt_lock_info_t *info) { + erts_lcnt_lock_info_t *next, *prev; - if (lock_in_conflict) - ethr_atomic_inc(&stats->colls); + prev = &list->head; - if (time_wait) { - lcnt_time_add(&(stats->timer), time_wait); - stats->timer_n++; - lcnt_update_stats_hist(&stats->hist,time_wait); - } -} + lcnt_lock_list_entry(prev); -/* interface */ + next = prev->next; -void erts_lcnt_init() { - erts_lcnt_thread_data_t *eltd = NULL; + lcnt_lock_list_entry(next); - /* init lock */ - if (ethr_mutex_init(&lcnt_data_lock) != 0) abort(); + info->next = next; + info->prev = prev; - /* init tsd */ - lcnt_n_thr = 0; - ethr_tsd_key_create(&lcnt_thr_data_key, "lcnt_data"); + prev->next = info; + next->prev = info; - lcnt_lock(); + lcnt_unlock_list_entry(next); + lcnt_unlock_list_entry(prev); +} + +static void lcnt_insert_list_carrier(erts_lcnt_lock_info_list_t *list, + erts_lcnt_lock_info_carrier_t *carrier) { + erts_lcnt_lock_info_t *next, *prev; + size_t i; - erts_lcnt_rt_options = ERTS_LCNT_OPT_LOCATION | ERTS_LCNT_OPT_PROCLOCK; - eltd = lcnt_thread_data_alloc(); - ethr_tsd_set(lcnt_thr_data_key, eltd); + for(i = 0; i < carrier->entry_count; i++) { + erts_lcnt_lock_info_t *info = &carrier->entries[i]; - /* init lcnt structure */ - erts_lcnt_data = (erts_lcnt_data_t*)malloc(sizeof(erts_lcnt_data_t)); - if (!erts_lcnt_data) { - ERTS_INTERNAL_ERROR("Lock counter failed to allocate memory!"); + info->prev = &carrier->entries[i - 1]; + info->next = &carrier->entries[i + 1]; } - erts_lcnt_data->current_locks = erts_lcnt_list_init(); - erts_lcnt_data->deleted_locks = erts_lcnt_list_init(); - lcnt_unlock(); + prev = &list->head; + + lcnt_lock_list_entry(prev); + + next = prev->next; + + lcnt_lock_list_entry(next); + + next->prev = &carrier->entries[carrier->entry_count - 1]; + carrier->entries[carrier->entry_count - 1].next = next; + prev->next = &carrier->entries[0]; + carrier->entries[0].prev = prev; + + lcnt_unlock_list_entry(next); + lcnt_unlock_list_entry(prev); } -void erts_lcnt_late_init() { - /* set start timer and zero statistics */ - erts_lcnt_clear_counters(); - erts_thr_install_exit_handler(erts_lcnt_thread_exit_handler); +static void lcnt_init_list(erts_lcnt_lock_info_list_t *list) { + /* Ensure that ref_count operations explode when touching the sentinels in + * DEBUG mode. */ + ethr_atomic_init(&(list->head.ref_count), -1); + ethr_atomic_init(&(list->tail.ref_count), -1); + + ethr_atomic32_init(&(list->head.lock), 0); + (list->head).next = &list->tail; + (list->head).prev = &list->tail; + + ethr_atomic32_init(&(list->tail.lock), 0); + (list->tail).next = &list->head; + (list->tail).prev = &list->head; } -/* list operations */ +/* - Carrier operations - */ -/* BEGIN ASSUMPTION: lcnt_data_lock taken */ +int lcnt_thr_progress_unmanaged_delay__(void) { + return erts_thr_progress_unmanaged_delay(); +} -erts_lcnt_lock_list_t *erts_lcnt_list_init(void) { - erts_lcnt_lock_list_t *list; +void lcnt_thr_progress_unmanaged_continue__(int handle) { + return erts_thr_progress_unmanaged_continue(handle); +} - list = (erts_lcnt_lock_list_t*)malloc(sizeof(erts_lcnt_lock_list_t)); - if (!list) { - ERTS_INTERNAL_ERROR("Lock counter failed to allocate memory!"); - } - list->head = NULL; - list->tail = NULL; - list->n = 0; - return list; +void lcnt_deallocate_carrier__(erts_lcnt_lock_info_carrier_t *carrier) { + ASSERT(ethr_atomic_read(&carrier->ref_count) == 0); + erts_free(ERTS_ALC_T_LCNT_CARRIER, (void*)carrier); } -static void lcnt_list_free(erts_lcnt_lock_t *head) { - erts_lcnt_lock_t *lock, *next; +static void lcnt_thr_prg_cleanup_carrier(void *data) { + erts_lcnt_lock_info_carrier_t *carrier = data; + size_t entry_count, i; + + /* carrier->entry_count will be replaced with garbage if it's deallocated + * on the final iteration, so we'll tuck it away to get a clean exit. */ + entry_count = carrier->entry_count; - lock = head; + for(i = 0; i < entry_count; i++) { + ASSERT(ethr_atomic_read(&carrier->ref_count) >= (entry_count - i)); - while(lock != NULL) { - next = lock->next; - free(lock); - lock = next; + erts_lcnt_release_lock_info(&carrier->entries[i]); } } -void erts_lcnt_list_insert(erts_lcnt_lock_list_t *list, erts_lcnt_lock_t *lock) { - erts_lcnt_lock_t *tail = NULL; +static void lcnt_schedule_carrier_cleanup(void *data) { + ErtsSchedulerData *esdp = erts_get_scheduler_data(); + + /* We can't issue cleanup jobs on anything other than normal schedulers, so + * we move to the first scheduler if required. */ - tail = list->tail; - if (tail) { - tail->next = lock; - lock->prev = tail; + if(!esdp || esdp->type != ERTS_SCHED_NORMAL) { + erts_schedule_misc_aux_work(1, &lcnt_schedule_carrier_cleanup, data); } else { - list->head = lock; - lock->prev = NULL; - ASSERT(!lock->next); + erts_lcnt_lock_info_carrier_t *carrier = data; + size_t carrier_size; + + carrier_size = sizeof(erts_lcnt_lock_info_carrier_t) + + sizeof(erts_lcnt_lock_info_t) * carrier->entry_count; + + erts_schedule_thr_prgr_later_cleanup_op(&lcnt_thr_prg_cleanup_carrier, + data, (ErtsThrPrgrLaterOp*)&carrier->release_entries, carrier_size); } - lock->next = NULL; - list->tail = lock; +} - list->n++; +static void lcnt_info_deallocate(erts_lcnt_lock_info_t *info) { + lcnt_release_carrier__(info->carrier); } -void erts_lcnt_list_delete(erts_lcnt_lock_list_t *list, erts_lcnt_lock_t *lock) { - if (lock->next) lock->next->prev = lock->prev; - if (lock->prev) lock->prev->next = lock->next; - if (list->head == lock) list->head = lock->next; - if (list->tail == lock) list->tail = lock->prev; +static void lcnt_info_dispose(erts_lcnt_lock_info_t *info) { + ASSERT(ethr_atomic_read(&info->ref_count) == 0); + + if(lcnt_preserve_info) { + ethr_atomic_set(&info->ref_count, 1); + + /* Move straight to deallocation the next time around. */ + info->dispose = &lcnt_info_deallocate; - lock->prev = NULL; - lock->next = NULL; - list->n--; + lcnt_insert_list_entry(&lcnt_deleted_lock_list, info); + } else { + lcnt_info_deallocate(info); + } } -/* END ASSUMPTION: lcnt_data_lock taken */ +static void lcnt_lock_info_init_helper(erts_lcnt_lock_info_t *info) { + ethr_atomic_init(&info->ref_count, 1); + ethr_atomic32_init(&info->lock, 0); + + ethr_atomic_init(&info->r_state, 0); + ethr_atomic_init(&info->w_state, 0); -/* lock operations */ + info->dispose = &lcnt_info_dispose; -/* interface to erl_threads.h */ -/* only lock on init and destroy, all others should use atomics */ -void erts_lcnt_init_lock(erts_lcnt_lock_t *lock, char *name, Uint16 flag ) { - erts_lcnt_init_lock_x(lock, name, flag, NIL); + lcnt_clear_stats(info); } -void erts_lcnt_init_lock_x(erts_lcnt_lock_t *lock, char *name, Uint16 flag, Eterm id) { - int i; +erts_lcnt_lock_info_carrier_t *erts_lcnt_create_lock_info_carrier(int entry_count) { + erts_lcnt_lock_info_carrier_t *result; + size_t carrier_size, i; - if (flag & ERTS_LCNT_LT_DISABLE) { - ERTS_LCNT_CLEAR_FLAG(lock); - return; - } + ASSERT(entry_count > 0 && entry_count <= LCNT_MAX_CARRIER_ENTRIES); + ASSERT(lcnt_initialization_completed__); - lock->next = NULL; - lock->prev = NULL; - lock->flag = flag; - lock->name = name; - lock->id = id; + carrier_size = sizeof(erts_lcnt_lock_info_carrier_t) + + sizeof(erts_lcnt_lock_info_t) * entry_count; - ethr_atomic_init(&lock->r_state, 0); - ethr_atomic_init(&lock->w_state, 0); -#ifdef DEBUG - ethr_atomic_init(&lock->flowstate, 0); -#endif + result = (erts_lcnt_lock_info_carrier_t*)erts_alloc(ERTS_ALC_T_LCNT_CARRIER, carrier_size); + result->entry_count = entry_count; - lock->n_stats = 1; + ethr_atomic_init(&result->ref_count, entry_count); - for (i = 0; i < ERTS_LCNT_MAX_LOCK_LOCATIONS; i++) { - lcnt_clear_stats(&lock->stats[i]); - } + for(i = 0; i < entry_count; i++) { + erts_lcnt_lock_info_t *info = &result->entries[i]; - lcnt_lock(); - erts_lcnt_list_insert(erts_lcnt_data->current_locks, lock); - lcnt_unlock(); -} + lcnt_lock_info_init_helper(info); -/* init empty, instead of zero struct - * used by process locks probes - */ -void erts_lcnt_init_lock_empty(erts_lcnt_lock_t *lock) { - lock->next = NULL; - lock->prev = NULL; - lock->flag = 0; - lock->name = NULL; - lock->id = NIL; - ethr_atomic_init(&lock->r_state, 0); - ethr_atomic_init(&lock->w_state, 0); -#ifdef DEBUG - ethr_atomic_init(&lock->flowstate, 0); -#endif - lock->n_stats = 0; - sys_memzero(lock->stats, sizeof(lock->stats)); -} -/* destroy lock */ -void erts_lcnt_destroy_lock(erts_lcnt_lock_t *lock) { - if (ERTS_LCNT_IS_LOCK_INVALID(lock)) return; - lcnt_lock(); - - if (erts_lcnt_rt_options & ERTS_LCNT_OPT_COPYSAVE) { - erts_lcnt_lock_t *deleted_lock; - /* copy structure and insert the copy */ - deleted_lock = (erts_lcnt_lock_t*)malloc(sizeof(erts_lcnt_lock_t)); - if (!deleted_lock) { - ERTS_INTERNAL_ERROR("Lock counter failed to allocate memory!"); - } - memcpy(deleted_lock, lock, sizeof(erts_lcnt_lock_t)); - deleted_lock->next = NULL; - deleted_lock->prev = NULL; - erts_lcnt_list_insert(erts_lcnt_data->deleted_locks, deleted_lock); + info->carrier = result; } - /* delete original */ - erts_lcnt_list_delete(erts_lcnt_data->current_locks, lock); - ERTS_LCNT_CLEAR_FLAG(lock); - lcnt_unlock(); + return result; } -/* lock */ +void erts_lcnt_install(erts_lcnt_ref_t *ref, erts_lcnt_lock_info_carrier_t *carrier) { + ethr_sint_t swapped_carrier; -void erts_lcnt_lock_opt(erts_lcnt_lock_t *lock, Uint16 option) { - erts_aint_t r_state = 0, w_state = 0; - erts_lcnt_thread_data_t *eltd; +#ifdef DEBUG + int i; - if (erts_lcnt_rt_options & ERTS_LCNT_OPT_SUSPEND) return; - if (ERTS_LCNT_IS_LOCK_INVALID(lock)) return; + /* Verify that all locks share the same categories/static property; all + * other flags are fair game. */ + for(i = 1; i < carrier->entry_count; i++) { + const erts_lock_flags_t SIGNIFICANT_DIFF_MASK = + ERTS_LOCK_FLAGS_MASK_CATEGORY | ERTS_LOCK_FLAGS_PROPERTY_STATIC; - eltd = lcnt_get_thread_data(); - ASSERT(eltd); + erts_lcnt_lock_info_t *previous, *current; - w_state = ethr_atomic_read(&lock->w_state); + previous = &carrier->entries[i - 1]; + current = &carrier->entries[i]; - if (option & ERTS_LCNT_LO_WRITE) { - r_state = ethr_atomic_read(&lock->r_state); - ethr_atomic_inc( &lock->w_state); - } - if (option & ERTS_LCNT_LO_READ) { - ethr_atomic_inc( &lock->r_state); + ASSERT(!((previous->flags ^ current->flags) & SIGNIFICANT_DIFF_MASK)); } +#endif - /* we cannot acquire w_lock if either w or r are taken */ - /* we cannot acquire r_lock if w_lock is taken */ + swapped_carrier = ethr_atomic_cmpxchg_mb(ref, (ethr_sint_t)carrier, (ethr_sint_t)NULL); - if ((w_state > 0) || (r_state > 0)) { - eltd->lock_in_conflict = 1; - if (eltd->timer_set == 0) { - lcnt_time(&eltd->timer); - } - eltd->timer_set++; + if(swapped_carrier != (ethr_sint_t)NULL) { +#ifdef DEBUG + ASSERT(ethr_atomic_read(&carrier->ref_count) == carrier->entry_count); + ethr_atomic_set(&carrier->ref_count, 0); +#endif + + lcnt_deallocate_carrier__(carrier); } else { - eltd->lock_in_conflict = 0; + lcnt_insert_list_carrier(&lcnt_current_lock_list, carrier); } } -void erts_lcnt_lock(erts_lcnt_lock_t *lock) { - erts_aint_t w_state; - erts_lcnt_thread_data_t *eltd; +void erts_lcnt_uninstall(erts_lcnt_ref_t *ref) { + ethr_sint_t previous_carrier, swapped_carrier; - if (erts_lcnt_rt_options & ERTS_LCNT_OPT_SUSPEND) return; - if (ERTS_LCNT_IS_LOCK_INVALID(lock)) return; + previous_carrier = ethr_atomic_read(ref); + swapped_carrier = ethr_atomic_cmpxchg_mb(ref, (ethr_sint_t)NULL, previous_carrier); - w_state = ethr_atomic_read(&lock->w_state); - ethr_atomic_inc(&lock->w_state); - eltd = lcnt_get_thread_data(); + if(previous_carrier && previous_carrier == swapped_carrier) { + lcnt_schedule_carrier_cleanup((void*)previous_carrier); + } +} - ASSERT(eltd); +/* - Static lock registry - + * + * Since static locks can be trusted to never disappear, we can track them + * pretty cheaply and won't need to bother writing an "erts_lcnt_update_xx" + * variant. */ + +static void lcnt_init_static_lock_registry(void) { + ethr_atomic_init(&lcnt_static_lock_registry, (ethr_sint_t)NULL); +} + +static void lcnt_update_static_locks(void) { + lcnt_static_lock_ref_t *iterator = + (lcnt_static_lock_ref_t*)ethr_atomic_read(&lcnt_static_lock_registry); + + while(iterator != NULL) { + if(!erts_lcnt_check_enabled(iterator->flags)) { + erts_lcnt_uninstall(iterator->reference); + } else if(!erts_lcnt_check_ref_installed(iterator->reference)) { + erts_lcnt_lock_info_carrier_t *carrier = erts_lcnt_create_lock_info_carrier(1); + + erts_lcnt_init_lock_info_idx(carrier, 0, iterator->name, iterator->id, iterator->flags); - if (w_state > 0) { - eltd->lock_in_conflict = 1; - /* only set the timer if nobody else has it - * This should only happen when proc_locks aquires several locks - * 'atomicly'. All other locks will block the thread if w_state > 0 - * i.e. locked. - */ - if (eltd->timer_set == 0) { - lcnt_time(&eltd->timer); + erts_lcnt_install(iterator->reference, carrier); } - eltd->timer_set++; - } else { - eltd->lock_in_conflict = 0; + + iterator = iterator->next; } } -/* if a lock wasn't really a lock operation, bad bad process locks */ +void lcnt_register_static_lock__(erts_lcnt_ref_t *reference, const char *name, Eterm id, + erts_lock_flags_t flags) { + lcnt_static_lock_ref_t *lock = malloc(sizeof(lcnt_static_lock_ref_t)); + int retry_insertion; + + ASSERT(flags & ERTS_LOCK_FLAGS_PROPERTY_STATIC); + + lock->reference = reference; + lock->flags = flags; + lock->name = name; + lock->id = id; + + do { + ethr_sint_t swapped_head; -void erts_lcnt_lock_unaquire(erts_lcnt_lock_t *lock) { - /* should check if this thread was "waiting" */ - if (erts_lcnt_rt_options & ERTS_LCNT_OPT_SUSPEND) return; - if (ERTS_LCNT_IS_LOCK_INVALID(lock)) return; + lock->next = (lcnt_static_lock_ref_t*)ethr_atomic_read(&lcnt_static_lock_registry); - ethr_atomic_dec(&lock->w_state); + swapped_head = ethr_atomic_cmpxchg_acqb( + &lcnt_static_lock_registry, + (ethr_sint_t)lock, + (ethr_sint_t)lock->next); + + retry_insertion = (swapped_head != (ethr_sint_t)lock->next); + } while(retry_insertion); } -/* - * erts_lcnt_lock_post - * - * Used when we get a lock (i.e. directly after a lock operation) - * if the timer was set then we had to wait for the lock - * lock_post will calculate the wait time. - */ +/* - Initialization - */ + +void erts_lcnt_pre_thr_init() { + /* Ensure that the dependency hack mentioned in the header doesn't + * explode at runtime. */ + ERTS_CT_ASSERT(sizeof(LcntThrPrgrLaterOp) >= sizeof(ErtsThrPrgrLaterOp)); + ERTS_CT_ASSERT(ERTS_THR_PRGR_DHANDLE_MANAGED == + (ErtsThrPrgrDelayHandle)LCNT_THR_PRGR_DHANDLE_MANAGED); -void erts_lcnt_lock_post(erts_lcnt_lock_t *lock) { - erts_lcnt_lock_post_x(lock, (char*)str_undefined, 0); + lcnt_init_list(&lcnt_current_lock_list); + lcnt_init_list(&lcnt_deleted_lock_list); + + lcnt_init_static_lock_registry(); } -void erts_lcnt_lock_post_x(erts_lcnt_lock_t *lock, char *file, unsigned int line) { - erts_lcnt_thread_data_t *eltd; - erts_lcnt_time_t timer; - erts_lcnt_time_t time_wait; - erts_lcnt_lock_stats_t *stats; -#ifdef DEBUG - erts_aint_t flowstate; -#endif +void erts_lcnt_post_thr_init() { + /* ASSUMPTION: this is safe since it runs prior to the creation of other + * threads (Directly after ethread init). */ - if (erts_lcnt_rt_options & ERTS_LCNT_OPT_SUSPEND) return; - if (ERTS_LCNT_IS_LOCK_INVALID(lock)) return; + ethr_tsd_key_create(&lcnt_thr_data_key__, "lcnt_data"); + + erts_lcnt_thread_setup(); +} + +void erts_lcnt_late_init() { + /* Set start timer and zero all statistics */ + erts_lcnt_clear_counters(); + erts_thr_install_exit_handler(erts_lcnt_thread_exit_handler); #ifdef DEBUG - if (!(lock->flag & (ERTS_LCNT_LT_RWMUTEX | ERTS_LCNT_LT_RWSPINLOCK))) { - flowstate = ethr_atomic_read(&lock->flowstate); - ASSERT(flowstate == 0); - ethr_atomic_inc(&lock->flowstate); - } + /* It's safe to use erts_alloc and thread progress past this point. */ + lcnt_initialization_completed__ = 1; #endif +} - eltd = lcnt_get_thread_data(); - - ASSERT(eltd); +void erts_lcnt_post_startup(void) { + /* Default to capturing everything to match the behavior of the old lock + * counter build. */ + erts_lcnt_set_category_mask(ERTS_LOCK_FLAGS_MASK_CATEGORY); +} - /* if lock was in conflict, time it */ - stats = lcnt_get_lock_stats(lock, file, line); - if (eltd->timer_set) { - lcnt_time(&timer); +void erts_lcnt_thread_setup() { + lcnt_thread_data_t__ *eltd = lcnt_thread_data_alloc(); - lcnt_time_diff(&time_wait, &timer, &(eltd->timer)); - lcnt_update_stats(stats, eltd->lock_in_conflict, &time_wait); - eltd->timer_set--; - ASSERT(eltd->timer_set >= 0); - } else { - lcnt_update_stats(stats, eltd->lock_in_conflict, NULL); - } + ASSERT(eltd); + ethr_tsd_set(lcnt_thr_data_key__, eltd); } -/* unlock */ +void erts_lcnt_thread_exit_handler() { + lcnt_thread_data_t__ *eltd = lcnt_get_thread_data__(); -void erts_lcnt_unlock_opt(erts_lcnt_lock_t *lock, Uint16 option) { - if (erts_lcnt_rt_options & ERTS_LCNT_OPT_SUSPEND) return; - if (ERTS_LCNT_IS_LOCK_INVALID(lock)) return; - if (option & ERTS_LCNT_LO_WRITE) ethr_atomic_dec(&lock->w_state); - if (option & ERTS_LCNT_LO_READ ) ethr_atomic_dec(&lock->r_state); + if (eltd) { + free(eltd); + } } -void erts_lcnt_unlock(erts_lcnt_lock_t *lock) { - if (erts_lcnt_rt_options & ERTS_LCNT_OPT_SUSPEND) return; - if (ERTS_LCNT_IS_LOCK_INVALID(lock)) return; +/* - BIF interface - */ + +void erts_lcnt_retain_lock_info(erts_lcnt_lock_info_t *info) { #ifdef DEBUG - { - erts_aint_t w_state; - erts_aint_t flowstate; - - /* flowstate */ - flowstate = ethr_atomic_read(&lock->flowstate); - ASSERT(flowstate == 1); - ethr_atomic_dec(&lock->flowstate); - - /* write state */ - w_state = ethr_atomic_read(&lock->w_state); - ASSERT(w_state > 0); - } + ASSERT(ethr_atomic_inc_read_acqb(&info->ref_count) >= 2); +#else + ethr_atomic_inc_acqb(&info->ref_count); #endif - ethr_atomic_dec(&lock->w_state); } -/* trylock */ +void erts_lcnt_release_lock_info(erts_lcnt_lock_info_t *info) { + ethr_sint_t count; + + /* We need to acquire the lock before decrementing ref_count to avoid + * racing with list iteration; there's a short window between reading the + * reference to info and increasing its ref_count. */ + lcnt_lock_list_entry_with_neighbors(info); + + count = ethr_atomic_dec_read(&info->ref_count); -void erts_lcnt_trylock_opt(erts_lcnt_lock_t *lock, int res, Uint16 option) { - if (erts_lcnt_rt_options & ERTS_LCNT_OPT_SUSPEND) return; - if (ERTS_LCNT_IS_LOCK_INVALID(lock)) return; - /* Determine lock_state via res instead of state */ - if (res != EBUSY) { - if (option & ERTS_LCNT_LO_WRITE) ethr_atomic_inc(&lock->w_state); - if (option & ERTS_LCNT_LO_READ ) ethr_atomic_inc(&lock->r_state); - lcnt_update_stats(&(lock->stats[0]), 0, NULL); + ASSERT(count >= 0); + + if(count > 0) { + lcnt_unlock_list_entry_with_neighbors(info); } else { - ethr_atomic_inc(&lock->stats[0].tries); - ethr_atomic_inc(&lock->stats[0].colls); + (info->next)->prev = info->prev; + (info->prev)->next = info->next; + + lcnt_unlock_list_entry_with_neighbors(info); + + info->dispose(info); } } +erts_lock_flags_t erts_lcnt_get_category_mask() { + return lcnt_category_mask__; +} -void erts_lcnt_trylock(erts_lcnt_lock_t *lock, int res) { - /* Determine lock_state via res instead of state */ - if (erts_lcnt_rt_options & ERTS_LCNT_OPT_SUSPEND) return; - if (ERTS_LCNT_IS_LOCK_INVALID(lock)) return; - if (res != EBUSY) { -#ifdef DEBUG - { - erts_aint_t flowstate; - flowstate = ethr_atomic_read(&lock->flowstate); - ASSERT(flowstate == 0); - ethr_atomic_inc( &lock->flowstate); - } +#ifdef ERTS_ENABLE_KERNEL_POLL +/* erl_poll/erl_check_io only exports one of these variants at a time, and we + * may need to use either one depending on emulator startup flags. */ +void erts_lcnt_update_pollset_locks_nkp(int); +void erts_lcnt_update_pollset_locks_kp(int); + +void erts_lcnt_update_cio_locks_nkp(int); +void erts_lcnt_update_cio_locks_kp(int); #endif - ethr_atomic_inc(&lock->w_state); - lcnt_update_stats(&(lock->stats[0]), 0, NULL); - } else { - ethr_atomic_inc(&lock->stats[0].tries); - ethr_atomic_inc(&lock->stats[0].colls); + +void erts_lcnt_set_category_mask(erts_lock_flags_t mask) { + erts_lock_flags_t changed_categories; + + ASSERT(!(mask & ~ERTS_LOCK_FLAGS_MASK_CATEGORY)); + ASSERT(lcnt_initialization_completed__); + + changed_categories = (lcnt_category_mask__ ^ mask); + lcnt_category_mask__ = mask; + + if(changed_categories) { + lcnt_update_static_locks(); } -} -/* thread operations */ + if(changed_categories & ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION) { + erts_lcnt_update_distribution_locks(mask & ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION); + } -void erts_lcnt_thread_setup(void) { - erts_lcnt_thread_data_t *eltd; + if(changed_categories & ERTS_LOCK_FLAGS_CATEGORY_ALLOCATOR) { + erts_lcnt_update_allocator_locks(mask & ERTS_LOCK_FLAGS_CATEGORY_ALLOCATOR); + } - lcnt_lock(); - /* lock for thread id global update */ - eltd = lcnt_thread_data_alloc(); - lcnt_unlock(); - ASSERT(eltd); - ethr_tsd_set(lcnt_thr_data_key, eltd); -} + if(changed_categories & ERTS_LOCK_FLAGS_CATEGORY_PROCESS) { + erts_lcnt_update_process_locks(mask & ERTS_LOCK_FLAGS_CATEGORY_PROCESS); + } -void erts_lcnt_thread_exit_handler() { - erts_lcnt_thread_data_t *eltd; + if(changed_categories & ERTS_LOCK_FLAGS_CATEGORY_IO) { +#ifdef ERTS_ENABLE_KERNEL_POLL + if(erts_use_kernel_poll) { + erts_lcnt_update_pollset_locks_kp(mask & ERTS_LOCK_FLAGS_CATEGORY_IO); + erts_lcnt_update_cio_locks_kp(mask & ERTS_LOCK_FLAGS_CATEGORY_IO); + } else { + erts_lcnt_update_pollset_locks_nkp(mask & ERTS_LOCK_FLAGS_CATEGORY_IO); + erts_lcnt_update_cio_locks_nkp(mask & ERTS_LOCK_FLAGS_CATEGORY_IO); + } +#else + erts_lcnt_update_pollset_locks(mask & ERTS_LOCK_FLAGS_CATEGORY_IO); + erts_lcnt_update_cio_locks(mask & ERTS_LOCK_FLAGS_CATEGORY_IO); +#endif - eltd = ethr_tsd_get(lcnt_thr_data_key); + erts_lcnt_update_driver_locks(mask & ERTS_LOCK_FLAGS_CATEGORY_IO); + erts_lcnt_update_port_locks(mask & ERTS_LOCK_FLAGS_CATEGORY_IO); + } - if (eltd) { - free(eltd); + if(changed_categories & ERTS_LOCK_FLAGS_CATEGORY_DB) { + erts_lcnt_update_db_locks(mask & ERTS_LOCK_FLAGS_CATEGORY_DB); } } -/* bindings for bifs */ - -Uint16 erts_lcnt_set_rt_opt(Uint16 opt) { - Uint16 prev; - prev = (erts_lcnt_rt_options & opt); - erts_lcnt_rt_options |= opt; - return prev; +void erts_lcnt_set_preserve_info(int enable) { + lcnt_preserve_info = enable; } -Uint16 erts_lcnt_clear_rt_opt(Uint16 opt) { - Uint16 prev; - prev = (erts_lcnt_rt_options & opt); - erts_lcnt_rt_options &= ~opt; - return prev; +int erts_lcnt_get_preserve_info() { + return lcnt_preserve_info; } void erts_lcnt_clear_counters(void) { - erts_lcnt_lock_t *lock; - erts_lcnt_lock_list_t *list; - erts_lcnt_lock_stats_t *stats; - int i; + erts_lcnt_lock_info_t *iterator; - lcnt_lock(); + lcnt_time__(&lcnt_timer_start); - list = erts_lcnt_data->current_locks; + iterator = NULL; + while(erts_lcnt_iterate_list(&lcnt_current_lock_list, &iterator)) { + lcnt_clear_stats(iterator); + } - for (lock = list->head; lock != NULL; lock = lock->next) { - for( i = 0; i < ERTS_LCNT_MAX_LOCK_LOCATIONS; i++) { - stats = &lock->stats[i]; - lcnt_clear_stats(stats); - } - lock->n_stats = 1; + iterator = NULL; + while(erts_lcnt_iterate_list(&lcnt_deleted_lock_list, &iterator)) { + erts_lcnt_release_lock_info(iterator); } +} - lock = erts_lcnt_data->deleted_locks->head; - erts_lcnt_data->deleted_locks->head = NULL; - erts_lcnt_data->deleted_locks->tail = NULL; - erts_lcnt_data->deleted_locks->n = 0; +erts_lcnt_data_t erts_lcnt_get_data(void) { + erts_lcnt_time_t timer_stop; + erts_lcnt_data_t result; - lcnt_time(&timer_start); + lcnt_time__(&timer_stop); - lcnt_unlock(); + result.timer_start = lcnt_timer_start; - /* free deleted locks */ - lcnt_list_free(lock); + result.current_locks = &lcnt_current_lock_list; + result.deleted_locks = &lcnt_deleted_lock_list; + + lcnt_time_diff__(&result.duration, &timer_stop, &result.timer_start); + + return result; } -erts_lcnt_data_t *erts_lcnt_get_data(void) { - erts_lcnt_time_t timer_stop; +int erts_lcnt_iterate_list(erts_lcnt_lock_info_list_t *list, erts_lcnt_lock_info_t **iterator) { + erts_lcnt_lock_info_t *current, *next; - lcnt_lock(); + current = *iterator ? *iterator : &list->head; - lcnt_time(&timer_stop); - lcnt_time_diff(&(erts_lcnt_data->duration), &timer_stop, &timer_start); + ASSERT(current != &list->tail); - lcnt_unlock(); + lcnt_lock_list_entry(current); - return erts_lcnt_data; -} + next = current->next; + + if(next != &list->tail) { + erts_lcnt_retain_lock_info(next); + } + + lcnt_unlock_list_entry(current); + + if(current != &list->head) { + erts_lcnt_release_lock_info(current); + } + + *iterator = next; -char *erts_lcnt_lock_type(Uint16 type) { - return lcnt_lock_type(type); + return next != &list->tail; } -#endif /* ifdef ERTS_ENABLE_LOCK_COUNT */ +#endif /* #ifdef ERTS_ENABLE_LOCK_COUNT */ diff --git a/erts/emulator/beam/erl_lock_count.h b/erts/emulator/beam/erl_lock_count.h index 6caffbfe86..89d95a73cf 100644 --- a/erts/emulator/beam/erl_lock_count.h +++ b/erts/emulator/beam/erl_lock_count.h @@ -18,64 +18,51 @@ * %CopyrightEnd% */ -/* - * Description: Statistics for locks. - * - * Author: Björn-Egil Dahlberg - * Date: 2008-07-03 - * Abstract: - * Locks statistics internal representation. - * - * Conceptual representation, - * - set name - * | - id (the unique lock) - * | | - lock type - * | | - statistics - * | | | - location (file and line number) - * | | | - tries - * | | | - collisions (including trylock busy) - * | | | - timer (time spent in waiting for lock) - * | | | - n_timer (collisions excluding trylock busy) - * | | | - histogram - * | | | | - # 0 = log2(lock wait_time ns) - * | | | | - ... - * | | | | - # n = log2(lock wait_time ns) - * - * Each instance of a lock is the unique lock, i.e. set and id in that set. - * For each lock there is a set of statistics with where and what impact - * the lock aqusition had. - * - * Runtime options - * - suspend, used when internal lock-counting can't be applied. For instance - * when allocating a term for the outside and halloc needs to be used. - * Default: off. - * - location, reserved and not used. - * - proclock, disable proclock counting. Used when performance might be an - * issue. Accessible from erts_debug:lock_counters({process_locks, bool()}). - * Default: off. - * - copysave, enable saving of destroyed locks (and thereby its statistics). - * If memory constraints is an issue this need to be disabled. - * Accessible from erts_debug:lock_counters({copy_save, bool()}). - * Default: off. +/** + * @description Statistics for locks. + * @file erl_lock_count.h + * + * @author Björn-Egil Dahlberg + * @author John Högberg + * + * Conceptual representation: * + * - set name + * | - id (the unique lock) + * | | - lock type + * | | - statistics + * | | | - location (file and line number) + * | | | - attempts + * | | | - collisions (including trylock busy) + * | | | - timer (time spent in waiting for lock) + * | | | - n_timer (collisions excluding trylock busy) + * | | | - histogram + * | | | | - # 0 = log2(lock wait_time ns) + * | | | | - ... + * | | | | - # n = log2(lock wait_time ns) + * + * Each instance of a lock is the unique lock, i.e. set and id in that set. + * For each lock there is a set of statistics with where and what impact + * the lock acquisition had. */ -#include "sys.h" - #ifndef ERTS_LOCK_COUNT_H__ #define ERTS_LOCK_COUNT_H__ #ifdef ERTS_ENABLE_LOCK_COUNT #ifndef ERTS_ENABLE_LOCK_POSITION -/* Enable in order for _x variants of mtx functions to be used. */ +/** @brief Controls whether _x variants of mtx functions are used. */ #define ERTS_ENABLE_LOCK_POSITION 1 #endif +#include "sys.h" #include "ethread.h" -#define ERTS_LCNT_MAX_LOCK_LOCATIONS (10) +#include "erl_term.h" +#include "erl_lock_flags.h" + +#define ERTS_LCNT_MAX_LOCK_LOCATIONS (5) -/* histogram */ #define ERTS_LCNT_HISTOGRAM_MAX_NS (((unsigned long)1LL << 28) - 1) #if 0 || defined(ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT) #define ERTS_LCNT_HISTOGRAM_SLOT_SIZE (30) @@ -85,154 +72,857 @@ #define ERTS_LCNT_HISTOGRAM_RSHIFT (10) #endif -#define ERTS_LCNT_LT_SPINLOCK (((Uint16) 1) << 0) -#define ERTS_LCNT_LT_RWSPINLOCK (((Uint16) 1) << 1) -#define ERTS_LCNT_LT_MUTEX (((Uint16) 1) << 2) -#define ERTS_LCNT_LT_RWMUTEX (((Uint16) 1) << 3) -#define ERTS_LCNT_LT_PROCLOCK (((Uint16) 1) << 4) -#define ERTS_LCNT_LT_ALLOC (((Uint16) 1) << 5) +typedef struct { + unsigned long s; + unsigned long ns; +} erts_lcnt_time_t; + +typedef struct { + /* @brief log2 array of nano seconds occurences */ + Uint32 ns[ERTS_LCNT_HISTOGRAM_SLOT_SIZE]; +} erts_lcnt_hist_t; -#define ERTS_LCNT_LO_READ (((Uint16) 1) << 6) -#define ERTS_LCNT_LO_WRITE (((Uint16) 1) << 7) +typedef struct { + /** @brief In which file the lock was taken. May be NULL. */ + const char *file; + /** @brief Line number in \c file */ + unsigned int line; -#define ERTS_LCNT_LT_DISABLE (((Uint16) 1) << 8) + /* "attempts" and "collisions" need to be atomic since try_lock busy does + * not acquire a lock and there is no post action to rectify the + * situation. */ -#define ERTS_LCNT_LO_READ_WRITE ( ERTS_LCNT_LO_READ \ - | ERTS_LCNT_LO_WRITE ) + ethr_atomic_t attempts; + ethr_atomic_t collisions; -#define ERTS_LCNT_LT_ALL ( ERTS_LCNT_LT_SPINLOCK \ - | ERTS_LCNT_LT_RWSPINLOCK \ - | ERTS_LCNT_LT_MUTEX \ - | ERTS_LCNT_LT_RWMUTEX \ - | ERTS_LCNT_LT_PROCLOCK ) + erts_lcnt_time_t total_time_waited; + Uint64 times_waited; -#define ERTS_LCNT_LOCK_TYPE(lock) ((lock)->flag & ERTS_LCNT_LT_ALL) -#define ERTS_LCNT_IS_LOCK_INVALID(lock) (!((lock)->flag & ERTS_LCNT_LT_ALL)) -#define ERTS_LCNT_CLEAR_FLAG(lock) ((lock)->flag = 0) + erts_lcnt_hist_t wait_time_histogram; +} erts_lcnt_lock_stats_t; -/* runtime options */ +typedef struct lcnt_lock_info_t_ { + erts_lock_flags_t flags; + const char *name; + /** @brief Id if possible, must be an immediate */ + Eterm id; -#define ERTS_LCNT_OPT_SUSPEND (((Uint16) 1) << 0) -#define ERTS_LCNT_OPT_LOCATION (((Uint16) 1) << 1) -#define ERTS_LCNT_OPT_PROCLOCK (((Uint16) 1) << 2) -#define ERTS_LCNT_OPT_PORTLOCK (((Uint16) 1) << 3) -#define ERTS_LCNT_OPT_COPYSAVE (((Uint16) 1) << 4) + /* The first entry is reserved as a fallback for when location information + * is missing, and when the lock is used in more than (MAX_LOCK_LOCATIONS + * - 1) different places. */ + erts_lcnt_lock_stats_t location_stats[ERTS_LCNT_MAX_LOCK_LOCATIONS]; + unsigned int location_count; -typedef struct { - unsigned long s; - unsigned long ns; -} erts_lcnt_time_t; + /* -- Everything below is internal to this module ---------------------- */ + + /* Lock states; rw locks uses both states, other locks only uses w_state */ -extern erts_lcnt_time_t timer_start; + /** @brief Write state. 0 = not taken, otherwise n threads waiting */ + ethr_atomic_t w_state; + /** @brief Read state. 0 = not taken, > 0 -> writes will wait */ + ethr_atomic_t r_state; + + struct lcnt_lock_info_t_ *prev; + struct lcnt_lock_info_t_ *next; + + /** @brief Used in place of erts_refc_t to avoid a circular dependency. */ + ethr_atomic_t ref_count; + ethr_atomic32_t lock; + + /** @brief Deletion hook called once \c ref_count reaches 0; may defer + * deletion by modifying \c ref_count. */ + void (*dispose)(struct lcnt_lock_info_t_ *); + + struct lcnt_lock_info_carrier_ *carrier; +} erts_lcnt_lock_info_t; + +typedef struct lcnt_lock_info_list_ { + erts_lcnt_lock_info_t head; + erts_lcnt_lock_info_t tail; +} erts_lcnt_lock_info_list_t; typedef struct { - Uint32 ns[ERTS_LCNT_HISTOGRAM_SLOT_SIZE]; /* log2 array of nano seconds occurences */ -} erts_lcnt_hist_t; + erts_lcnt_time_t timer_start; /**< Time of last clear */ + erts_lcnt_time_t duration; /**< Time since last clear */ -typedef struct erts_lcnt_lock_stats_s { - /* "tries" and "colls" needs to be atomic since - * trylock busy does not acquire a lock and there - * is no post action to rectify the situation - */ + erts_lcnt_lock_info_list_t *current_locks; + erts_lcnt_lock_info_list_t *deleted_locks; +} erts_lcnt_data_t; - char *file; /* which file the lock was taken */ - unsigned int line; /* line number in file */ +typedef struct lcnt_lock_info_carrier_ erts_lcnt_lock_info_carrier_t; - ethr_atomic_t tries; /* n tries to get lock */ - ethr_atomic_t colls; /* n collisions of tries to get lock */ +typedef ethr_atomic_t erts_lcnt_ref_t; - unsigned long timer_n; /* #times waited for lock */ - erts_lcnt_time_t timer; /* total wait time for lock */ - erts_lcnt_hist_t hist; -} erts_lcnt_lock_stats_t; +/* -- Globals -------------------------------------------------------------- */ + +/** @brief Checks whether counting is enabled for any of the given + * categories. */ +#define erts_lcnt_check_enabled(flags) \ + (lcnt_category_mask__ & flags) + +/* -- Lock operations ------------------------------------------------------ + * + * All of these will nop if there's nothing "installed" on the given reference, + * in order to transparently support enable/disable at runtime. */ + +/** @brief Records that a lock is being acquired. */ +ERTS_GLB_FORCE_INLINE +void erts_lcnt_lock(erts_lcnt_ref_t *ref); + +/** @copydoc erts_lcnt_lock + * @param option Notes whether the lock is a read or write lock. */ +ERTS_GLB_FORCE_INLINE +void erts_lcnt_lock_opt(erts_lcnt_ref_t *ref, erts_lock_options_t option); + +/** @brief Records that a lock has been acquired. */ +ERTS_GLB_FORCE_INLINE +void erts_lcnt_lock_post(erts_lcnt_ref_t *ref); + +/** @copydoc erts_lcnt_lock_post. + * @param file The name of the file where the lock was acquired. + * @param line The line at which the lock was acquired. */ +ERTS_GLB_FORCE_INLINE +void erts_lcnt_lock_post_x(erts_lcnt_ref_t *ref, char *file, unsigned int line); + +/** @brief Records that a lock has been released. */ +ERTS_GLB_FORCE_INLINE +void erts_lcnt_unlock(erts_lcnt_ref_t *ref); + +/** @copydoc erts_lcnt_unlock_opt + * @param option Whether the lock is a read or write lock. */ +ERTS_GLB_FORCE_INLINE +void erts_lcnt_unlock_opt(erts_lcnt_ref_t *ref, erts_lock_options_t option); + +/** @brief Rectifies the case where a lock wasn't actually a lock operation. + * + * Only used for process locks at the moment. */ +ERTS_GLB_FORCE_INLINE +void erts_lcnt_lock_unacquire(erts_lcnt_ref_t *ref); + +/** @brief Records the result of a trylock, placing the queried lock status in + * \c result. */ +ERTS_GLB_FORCE_INLINE +void erts_lcnt_trylock(erts_lcnt_ref_t *ref, int result); + +/** @copydoc erts_lcnt_trylock + * @param option Whether the lock is a read or write lock. */ +ERTS_GLB_FORCE_INLINE +void erts_lcnt_trylock_opt(erts_lcnt_ref_t *ref, int result, erts_lock_options_t option); + +/* Indexed variants of the standard lock operations, for use when a single + * reference contains many counters (eg. process locks). + * + * erts_lcnt_open_ref must be used to safely extract the installed carrier, + * which must released with erts_lcnt_close_reference on success. + * + * Refer to \c erts_lcnt_lock for example usage. */ + +ERTS_GLB_INLINE +void erts_lcnt_lock_idx(erts_lcnt_lock_info_carrier_t *carrier, int index); +ERTS_GLB_INLINE +void erts_lcnt_lock_opt_idx(erts_lcnt_lock_info_carrier_t *carrier, int index, erts_lock_options_t option); + +ERTS_GLB_INLINE +void erts_lcnt_lock_post_idx(erts_lcnt_lock_info_carrier_t *carrier, int index); +ERTS_GLB_INLINE +void erts_lcnt_lock_post_x_idx(erts_lcnt_lock_info_carrier_t *carrier, int index, char *file, unsigned int line); + +ERTS_GLB_INLINE +void erts_lcnt_lock_unacquire_idx(erts_lcnt_lock_info_carrier_t *carrier, int index); + +ERTS_GLB_INLINE +void erts_lcnt_unlock_idx(erts_lcnt_lock_info_carrier_t *carrier, int index); +ERTS_GLB_INLINE +void erts_lcnt_unlock_opt_idx(erts_lcnt_lock_info_carrier_t *carrier, int index, erts_lock_options_t option); + +ERTS_GLB_INLINE +void erts_lcnt_trylock_idx(erts_lcnt_lock_info_carrier_t *carrier, int index, int result); +ERTS_GLB_INLINE +void erts_lcnt_trylock_opt_idx(erts_lcnt_lock_info_carrier_t *carrier, int index, int result, erts_lock_options_t option); + +/* -- Reference operations ------------------------------------------------- */ + +/** @brief Registers a lock counter reference; this must be called prior to + * using any other functions in this module. */ +ERTS_GLB_INLINE +void erts_lcnt_init_ref(erts_lcnt_ref_t *ref); + +/** @brief As \c erts_lcnt_init_ref, but also enables lock counting right + * away if appropriate to reduce noise. + * @param id An immediate erlang term with whatever extra data you want to + * identify this lock with. */ +ERTS_GLB_INLINE +void erts_lcnt_init_ref_x(erts_lcnt_ref_t *ref, const char *name, + Eterm id, erts_lock_flags_t flags); + +/** @brief Checks whether counting is enabled on the given reference. */ +ERTS_GLB_FORCE_INLINE +int erts_lcnt_check_ref_installed(erts_lcnt_ref_t *ref); + +/** @brief Convenience macro to re/enable counting on an already initialized + * reference. Don't forget to specify the lock type in \c flags! */ +#define erts_lcnt_install_new_lock_info(ref, name, id, flags) \ + if(!erts_lcnt_check_ref_installed(ref)) { \ + erts_lcnt_lock_info_carrier_t *__carrier; \ + __carrier = erts_lcnt_create_lock_info_carrier(1);\ + erts_lcnt_init_lock_info_idx(__carrier, 0, name, id, flags); \ + erts_lcnt_install(ref, __carrier);\ + } while(0) + +erts_lcnt_lock_info_carrier_t *erts_lcnt_create_lock_info_carrier(int count); + +/* @brief Initializes the lock info at the given index. + * @param id An immediate erlang term with whatever extra data you want to + * identify this lock with. + * @param flags The flags the lock itself was initialized with. Keep in mind + * that all locks in a carrier must share the same category/static property. */ +ERTS_GLB_INLINE +void erts_lcnt_init_lock_info_idx(erts_lcnt_lock_info_carrier_t *carrier, int index, + const char *name, Eterm id, erts_lock_flags_t flags); + +/** @brief Atomically installs the given lock counters. Nops (and releases the + * provided carrier) if something was already installed. */ +void erts_lcnt_install(erts_lcnt_ref_t *ref, erts_lcnt_lock_info_carrier_t *carrier); + +/** @brief Atomically removes the currently installed lock counters. Nops if + * nothing was installed. */ +void erts_lcnt_uninstall(erts_lcnt_ref_t *ref); + +ERTS_GLB_FORCE_INLINE +int erts_lcnt_open_ref(erts_lcnt_ref_t *ref, int *handle, erts_lcnt_lock_info_carrier_t **result); + +ERTS_GLB_FORCE_INLINE +void erts_lcnt_close_ref(int handle, erts_lcnt_lock_info_carrier_t *carrier); + +/* -- Module initialization ------------------------------------------------ */ + +void erts_lcnt_pre_thr_init(void); +void erts_lcnt_post_thr_init(void); +void erts_lcnt_late_init(void); + +/* @brief Called after everything in the system has been initialized, including + * the schedulers. This is mainly a backwards compatibility shim for matching + * the old lcnt behavior where all lock counting was enabled by default. */ +void erts_lcnt_post_startup(void); + +void erts_lcnt_thread_setup(void); +void erts_lcnt_thread_exit_handler(void); + +/* -- BIF interface -------------------------------------------------------- */ -/* rw locks uses both states, other locks only uses w_state */ -typedef struct erts_lcnt_lock_s { - char *name; /* lock name */ - Uint16 flag; /* lock type */ - Eterm id; /* id if possible */ +/** @brief Safely iterates through all entries in the given list. + * + * The referenced item will be valid until the next call to + * \c erts_lcnt_iterate_list after which point it may be destroyed; call + * erts_lcnt_retain_lock_info if you wish to hang on to it beyond that point. + * + * Iteration can be cancelled by calling erts_lcnt_release_lock_info on the + * iterator and breaking out of the loop. + * + * @param iterator The iteration variable; set the pointee to NULL to start + * iteration. + * @return 1 while the iterator is valid, 0 at the end of the list. */ +int erts_lcnt_iterate_list(erts_lcnt_lock_info_list_t *list, erts_lcnt_lock_info_t **iterator); + +/** @brief Clears the counter state of all locks, and releases all locks + * preserved through erts_lcnt_set_preserve_info (if any). */ +void erts_lcnt_clear_counters(void); + +/** @brief Retrieves the global lock counter state. + * + * Note that the lists may be modified while you're mucking around with them. + * Always use \c erts_lcnt_iterate_list to enumerate them. */ +erts_lcnt_data_t erts_lcnt_get_data(void); + +void erts_lcnt_retain_lock_info(erts_lcnt_lock_info_t *info); +void erts_lcnt_release_lock_info(erts_lcnt_lock_info_t *info); + +/** @brief Sets whether to preserve the info of destroyed/uninstalled locks. + * + * This option makes no distinction whether the lock was destroyed or if lock + * counting was simply disabled, so erts_lcnt_set_category_mask must not be + * used while this option is active. */ +void erts_lcnt_set_preserve_info(int enable); + +int erts_lcnt_get_preserve_info(void); + +/** @brief Updates the category mask, enabling or disabling counting on the + * affected locks as necessary. + * + * This is not guaranteed to find all existing locks; only those that are + * flagged as static locks and those reachable through other means can be + * altered. */ +void erts_lcnt_set_category_mask(erts_lock_flags_t mask); + +erts_lock_flags_t erts_lcnt_get_category_mask(void); + +/* -- Inline implementation ------------------------------------------------ */ + +/* The following is a hack to get the things we need from erl_thr_progress.h, + * which we can't #include without dependency hell breaking loose. + * + * The size of LcntThrPrgrLaterOp and value of the constant are verified at + * compile-time in erts_lcnt_pre_thr_init. */ + +int lcnt_thr_progress_unmanaged_delay__(void); +void lcnt_thr_progress_unmanaged_continue__(int handle); +typedef struct { Uint64 _[4]; } LcntThrPrgrLaterOp; +#define LCNT_THR_PRGR_DHANDLE_MANAGED -1 + +struct lcnt_lock_info_carrier_ { + ethr_atomic_t ref_count; + + LcntThrPrgrLaterOp release_entries; + + unsigned char entry_count; + erts_lcnt_lock_info_t entries[]; +}; + +typedef struct { + erts_lcnt_time_t timer; /* timer */ + int timer_set; /* bool */ + int lock_in_conflict; /* bool */ +} lcnt_thread_data_t__; + +extern const int lcnt_log2_tab64__[]; + +extern ethr_tsd_key lcnt_thr_data_key__; +extern erts_lock_flags_t lcnt_category_mask__; #ifdef DEBUG - ethr_atomic_t flowstate; +extern int lcnt_initialization_completed__; #endif - /* lock states */ - ethr_atomic_t w_state; /* 0 not taken, otherwise n threads waiting */ - ethr_atomic_t r_state; /* 0 not taken, > 0 -> writes will wait */ +void lcnt_register_static_lock__(erts_lcnt_ref_t *reference, const char *name, Eterm id, + erts_lock_flags_t flags); - /* statistics */ - unsigned int n_stats; - erts_lcnt_lock_stats_t stats[ERTS_LCNT_MAX_LOCK_LOCATIONS]; /* first entry is "undefined"*/ +void lcnt_deallocate_carrier__(erts_lcnt_lock_info_carrier_t *carrier); - /* chains for list handling */ - /* data is hold by lcnt_lock */ - struct erts_lcnt_lock_s *prev; - struct erts_lcnt_lock_s *next; -} erts_lcnt_lock_t; +ERTS_GLB_INLINE +int lcnt_log2__(Uint64 v); -typedef struct { - erts_lcnt_lock_t *head; - erts_lcnt_lock_t *tail; - unsigned long n; -} erts_lcnt_lock_list_t; +ERTS_GLB_INLINE +void lcnt_update_wait_histogram__(erts_lcnt_hist_t *hist, erts_lcnt_time_t *time_waited); -typedef struct { - erts_lcnt_time_t duration; /* time since last clear */ - erts_lcnt_lock_list_t *current_locks; - erts_lcnt_lock_list_t *deleted_locks; -} erts_lcnt_data_t; +ERTS_GLB_INLINE +void lcnt_update_stats__(erts_lcnt_lock_stats_t *stats, int lock_in_conflict, erts_lcnt_time_t *time_waited); -typedef struct { - int id; +ERTS_GLB_INLINE +erts_lcnt_lock_stats_t *lcnt_get_lock_stats__(erts_lcnt_lock_info_t *info, char *file, unsigned int line); - erts_lcnt_time_t timer; /* timer */ - int timer_set; /* bool */ - int lock_in_conflict; /* bool */ -} erts_lcnt_thread_data_t; +ERTS_GLB_INLINE +void lcnt_dec_lock_state__(ethr_atomic_t *l_state); -/* globals */ +ERTS_GLB_INLINE +void lcnt_time__(erts_lcnt_time_t *time); -extern Uint16 erts_lcnt_rt_options; +ERTS_GLB_INLINE +void lcnt_time_add__(erts_lcnt_time_t *t, erts_lcnt_time_t *d); -/* function declerations */ +ERTS_GLB_INLINE +void lcnt_time_diff__(erts_lcnt_time_t *d, erts_lcnt_time_t *t1, erts_lcnt_time_t *t0); -void erts_lcnt_init(void); -void erts_lcnt_late_init(void); +ERTS_GLB_INLINE +void lcnt_retain_carrier__(erts_lcnt_lock_info_carrier_t *carrier); -/* thread operations */ -void erts_lcnt_thread_setup(void); -void erts_lcnt_thread_exit_handler(void); +ERTS_GLB_INLINE +void lcnt_release_carrier__(erts_lcnt_lock_info_carrier_t *carrier); + +ERTS_GLB_INLINE +lcnt_thread_data_t__ *lcnt_get_thread_data__(void); + +#if ERTS_GLB_INLINE_INCL_FUNC_DEF + +ERTS_GLB_INLINE +void lcnt_time__(erts_lcnt_time_t *time) { + /* + * erts_sys_hrtime() is the highest resolution + * we could find, it may or may not be monotonic... + */ + ErtsMonotonicTime mtime = erts_sys_hrtime(); + time->s = (unsigned long) (mtime / 1000000000LL); + time->ns = (unsigned long) (mtime - 1000000000LL*time->s); +} + +/* difference d must be non-negative */ + +ERTS_GLB_INLINE +void lcnt_time_add__(erts_lcnt_time_t *t, erts_lcnt_time_t *d) { + t->s += d->s; + t->ns += d->ns; + + t->s += t->ns / 1000000000LL; + t->ns = t->ns % 1000000000LL; +} + +ERTS_GLB_INLINE +void lcnt_time_diff__(erts_lcnt_time_t *d, erts_lcnt_time_t *t1, erts_lcnt_time_t *t0) { + long ds; + long dns; + + ds = t1->s - t0->s; + dns = t1->ns - t0->ns; + + /* the difference should not be able to get bigger than 1 sec in ns*/ + + if (dns < 0) { + ds -= 1; + dns += 1000000000LL; + } + + ASSERT(ds >= 0); + + d->s = ds; + d->ns = dns; +} + +ERTS_GLB_INLINE +int lcnt_log2__(Uint64 v) { + v |= v >> 1; + v |= v >> 2; + v |= v >> 4; + v |= v >> 8; + v |= v >> 16; + v |= v >> 32; + + return lcnt_log2_tab64__[((Uint64)((v - (v >> 1))*0x07EDD5E59A4E28C2)) >> 58]; +} + +ERTS_GLB_INLINE +void lcnt_update_wait_histogram__(erts_lcnt_hist_t *hist, erts_lcnt_time_t *time_waited) { + int idx; + + if(time_waited->s > 0 || time_waited->ns > ERTS_LCNT_HISTOGRAM_MAX_NS) { + idx = ERTS_LCNT_HISTOGRAM_SLOT_SIZE - 1; + } else { + unsigned long r = time_waited->ns >> ERTS_LCNT_HISTOGRAM_RSHIFT; + + idx = r ? lcnt_log2__(r) : 0; + } + + hist->ns[idx]++; +} + +ERTS_GLB_INLINE +void lcnt_update_stats__(erts_lcnt_lock_stats_t *stats, int lock_in_conflict, erts_lcnt_time_t *time_waited) { + ethr_atomic_inc(&stats->attempts); + + if(lock_in_conflict) { + ethr_atomic_inc(&stats->collisions); + } + + if(time_waited) { + stats->times_waited++; + + lcnt_time_add__(&stats->total_time_waited, time_waited); + lcnt_update_wait_histogram__(&stats->wait_time_histogram, time_waited); + } +} + +/* If we were installed while the lock was held, r/w_state will be 0 and we + * can't tell which unlock or unacquire operation was the last. To get around + * this we assume that all excess operations go *towards* zero rather than down + * to zero, eventually becoming consistent with the actual state once the lock + * is fully released. + * + * Conflicts might not be counted until the recorded state is fully consistent + * with the actual state, but there should be no other ill effects. */ + +ERTS_GLB_INLINE +void lcnt_dec_lock_state__(ethr_atomic_t *l_state) { + ethr_sint_t state = ethr_atomic_dec_read_acqb(l_state); + + /* We can not assume that state is >= -1 here; unlock and unacquire might + * bring it below -1 and race to increment it back. */ + + if(state < 0) { + ethr_atomic_inc_acqb(l_state); + } +} + +ERTS_GLB_INLINE +erts_lcnt_lock_stats_t *lcnt_get_lock_stats__(erts_lcnt_lock_info_t *info, char *file, unsigned int line) { + unsigned int i; + + ASSERT(info->location_count >= 1 && info->location_count <= ERTS_LCNT_MAX_LOCK_LOCATIONS); + + for(i = 0; i < info->location_count; i++) { + erts_lcnt_lock_stats_t *stats = &info->location_stats[i]; + + if(stats->file == file && stats->line == line) { + return stats; + } + } -/* list operations (local) */ -erts_lcnt_lock_list_t *erts_lcnt_list_init(void); + if(info->location_count < ERTS_LCNT_MAX_LOCK_LOCATIONS) { + erts_lcnt_lock_stats_t *stats = &info->location_stats[info->location_count]; -void erts_lcnt_list_insert(erts_lcnt_lock_list_t *list, erts_lcnt_lock_t *lock); -void erts_lcnt_list_delete(erts_lcnt_lock_list_t *list, erts_lcnt_lock_t *lock); + stats->file = file; + stats->line = line; -/* lock operations (global) */ -void erts_lcnt_init_lock(erts_lcnt_lock_t *lock, char *name, Uint16 flag); -void erts_lcnt_init_lock_x(erts_lcnt_lock_t *lock, char *name, Uint16 flag, Eterm id); -void erts_lcnt_init_lock_empty(erts_lcnt_lock_t *lock); -void erts_lcnt_destroy_lock(erts_lcnt_lock_t *lock); + info->location_count++; -void erts_lcnt_lock(erts_lcnt_lock_t *lock); -void erts_lcnt_lock_opt(erts_lcnt_lock_t *lock, Uint16 option); -void erts_lcnt_lock_post(erts_lcnt_lock_t *lock); -void erts_lcnt_lock_post_x(erts_lcnt_lock_t *lock, char *file, unsigned int line); -void erts_lcnt_lock_unaquire(erts_lcnt_lock_t *lock); + return stats; + } -void erts_lcnt_unlock(erts_lcnt_lock_t *lock); -void erts_lcnt_unlock_opt(erts_lcnt_lock_t *lock, Uint16 option); + return &info->location_stats[0]; +} -void erts_lcnt_trylock_opt(erts_lcnt_lock_t *lock, int res, Uint16 option); -void erts_lcnt_trylock(erts_lcnt_lock_t *lock, int res); +ERTS_GLB_INLINE +lcnt_thread_data_t__ *lcnt_get_thread_data__(void) { + lcnt_thread_data_t__ *eltd = (lcnt_thread_data_t__ *)ethr_tsd_get(lcnt_thr_data_key__); -/* bif interface */ -Uint16 erts_lcnt_set_rt_opt(Uint16 opt); -Uint16 erts_lcnt_clear_rt_opt(Uint16 opt); -void erts_lcnt_clear_counters(void); -char *erts_lcnt_lock_type(Uint16 type); -erts_lcnt_data_t *erts_lcnt_get_data(void); + ASSERT(eltd); + + return eltd; +} + +ERTS_GLB_FORCE_INLINE +int erts_lcnt_open_ref(erts_lcnt_ref_t *ref, int *handle, erts_lcnt_lock_info_carrier_t **result) { + if(ERTS_LIKELY(!erts_lcnt_check_ref_installed(ref))) { + return 0; + } + + ASSERT(lcnt_initialization_completed__); + + (*handle) = lcnt_thr_progress_unmanaged_delay__(); + (*result) = (erts_lcnt_lock_info_carrier_t*)ethr_atomic_read(ref); + + if(*result) { + if(*handle != LCNT_THR_PRGR_DHANDLE_MANAGED) { + lcnt_retain_carrier__(*result); + lcnt_thr_progress_unmanaged_continue__(*handle); + } + + return 1; + } else if(*handle != LCNT_THR_PRGR_DHANDLE_MANAGED) { + lcnt_thr_progress_unmanaged_continue__(*handle); + } + + return 0; +} + +ERTS_GLB_FORCE_INLINE +void erts_lcnt_close_ref(int handle, erts_lcnt_lock_info_carrier_t *carrier) { + if(handle != LCNT_THR_PRGR_DHANDLE_MANAGED) { + lcnt_release_carrier__(carrier); + } +} + +ERTS_GLB_INLINE +void erts_lcnt_init_ref(erts_lcnt_ref_t *ref) { + ethr_atomic_init(ref, (ethr_sint_t)NULL); +} + +ERTS_GLB_INLINE +void erts_lcnt_init_ref_x(erts_lcnt_ref_t *ref, const char *name, + Eterm id, erts_lock_flags_t flags) { + erts_lcnt_init_ref(ref); + + if(flags & ERTS_LOCK_FLAGS_PROPERTY_STATIC) { + lcnt_register_static_lock__(ref, name, id, flags); + } + + if(erts_lcnt_check_enabled(flags)) { + erts_lcnt_install_new_lock_info(ref, name, id, flags); + } +} + +ERTS_GLB_FORCE_INLINE +int erts_lcnt_check_ref_installed(erts_lcnt_ref_t *ref) { + return (!!*ethr_atomic_addr(ref)); +} + +ERTS_GLB_FORCE_INLINE +void erts_lcnt_lock(erts_lcnt_ref_t *ref) { + erts_lcnt_lock_info_carrier_t *carrier; + int handle; + + if(erts_lcnt_open_ref(ref, &handle, &carrier)) { + erts_lcnt_lock_idx(carrier, 0); + + erts_lcnt_close_ref(handle, carrier); + } +} + +ERTS_GLB_FORCE_INLINE +void erts_lcnt_lock_opt(erts_lcnt_ref_t *ref, erts_lock_options_t option) { + erts_lcnt_lock_info_carrier_t *carrier; + int handle; + + if(erts_lcnt_open_ref(ref, &handle, &carrier)) { + erts_lcnt_lock_opt_idx(carrier, 0, option); + + erts_lcnt_close_ref(handle, carrier); + } +} + +ERTS_GLB_FORCE_INLINE +void erts_lcnt_lock_post(erts_lcnt_ref_t *ref) { + erts_lcnt_lock_info_carrier_t *carrier; + int handle; + + if(erts_lcnt_open_ref(ref, &handle, &carrier)) { + erts_lcnt_lock_post_idx(carrier, 0); + + erts_lcnt_close_ref(handle, carrier); + } +} + +ERTS_GLB_FORCE_INLINE +void erts_lcnt_lock_post_x(erts_lcnt_ref_t *ref, char *file, unsigned int line) { + erts_lcnt_lock_info_carrier_t *carrier; + int handle; + + if(erts_lcnt_open_ref(ref, &handle, &carrier)) { + erts_lcnt_lock_post_x_idx(carrier, 0, file, line); + + erts_lcnt_close_ref(handle, carrier); + } +} + +ERTS_GLB_FORCE_INLINE +void erts_lcnt_lock_unacquire(erts_lcnt_ref_t *ref) { + erts_lcnt_lock_info_carrier_t *carrier; + int handle; + + if(erts_lcnt_open_ref(ref, &handle, &carrier)) { + erts_lcnt_lock_unacquire_idx(carrier, 0); + + erts_lcnt_close_ref(handle, carrier); + } +} + +ERTS_GLB_FORCE_INLINE +void erts_lcnt_unlock(erts_lcnt_ref_t *ref) { + erts_lcnt_lock_info_carrier_t *carrier; + int handle; + + if(erts_lcnt_open_ref(ref, &handle, &carrier)) { + erts_lcnt_unlock_idx(carrier, 0); + + erts_lcnt_close_ref(handle, carrier); + } +} + +ERTS_GLB_FORCE_INLINE +void erts_lcnt_unlock_opt(erts_lcnt_ref_t *ref, erts_lock_options_t option) { + erts_lcnt_lock_info_carrier_t *carrier; + int handle; + + if(erts_lcnt_open_ref(ref, &handle, &carrier)) { + erts_lcnt_unlock_opt_idx(carrier, 0, option); + + erts_lcnt_close_ref(handle, carrier); + } +} + +ERTS_GLB_FORCE_INLINE +void erts_lcnt_trylock(erts_lcnt_ref_t *ref, int result) { + erts_lcnt_lock_info_carrier_t *carrier; + int handle; + + if(erts_lcnt_open_ref(ref, &handle, &carrier)) { + erts_lcnt_trylock_idx(carrier, 0, result); + + erts_lcnt_close_ref(handle, carrier); + } +} + +ERTS_GLB_FORCE_INLINE +void erts_lcnt_trylock_opt(erts_lcnt_ref_t *ref, int result, erts_lock_options_t option) { + erts_lcnt_lock_info_carrier_t *carrier; + int handle; + + if(erts_lcnt_open_ref(ref, &handle, &carrier)) { + erts_lcnt_trylock_opt_idx(carrier, 0, result, option); + + erts_lcnt_close_ref(handle, carrier); + } +} + +ERTS_GLB_INLINE +void erts_lcnt_lock_idx(erts_lcnt_lock_info_carrier_t *carrier, int index) { + erts_lcnt_lock_opt_idx(carrier, index, ERTS_LOCK_OPTIONS_WRITE); +} + +ERTS_GLB_INLINE +void erts_lcnt_lock_opt_idx(erts_lcnt_lock_info_carrier_t *carrier, int index, erts_lock_options_t option) { + erts_lcnt_lock_info_t *info = &carrier->entries[index]; + + lcnt_thread_data_t__ *eltd = lcnt_get_thread_data__(); + + ASSERT(index < carrier->entry_count); + + ASSERT((option & ERTS_LOCK_OPTIONS_READ) || (option & ERTS_LOCK_OPTIONS_WRITE)); + + if(option & ERTS_LOCK_OPTIONS_WRITE) { + ethr_sint_t w_state, r_state; + + w_state = ethr_atomic_inc_read(&info->w_state) - 1; + r_state = ethr_atomic_read(&info->r_state); + + /* We cannot acquire w_lock if either w or r are taken */ + eltd->lock_in_conflict = (w_state > 0) || (r_state > 0); + } else { + ethr_sint_t w_state = ethr_atomic_read(&info->w_state); + + /* We cannot acquire r_lock if w_lock is taken */ + eltd->lock_in_conflict = (w_state > 0); + } + + if(option & ERTS_LOCK_OPTIONS_READ) { + ASSERT(info->flags & ERTS_LOCK_FLAGS_PROPERTY_READ_WRITE); + ethr_atomic_inc(&info->r_state); + } + + if(eltd->lock_in_conflict) { + /* Only set the timer if nobody else has it. This should only happen + * when proc_locks acquires several locks "atomically." All other locks + * will block the thread when locked (w_state > 0) */ + if(eltd->timer_set == 0) { + lcnt_time__(&eltd->timer); + } + + eltd->timer_set++; + } +} + +ERTS_GLB_INLINE +void erts_lcnt_lock_post_idx(erts_lcnt_lock_info_carrier_t *carrier, int index) { + erts_lcnt_lock_post_x_idx(carrier, index, NULL, 0); +} + +ERTS_GLB_INLINE +void erts_lcnt_lock_post_x_idx(erts_lcnt_lock_info_carrier_t *carrier, int index, char *file, unsigned int line) { + erts_lcnt_lock_info_t *info = &carrier->entries[index]; + + lcnt_thread_data_t__ *eltd = lcnt_get_thread_data__(); + erts_lcnt_lock_stats_t *stats; + + ASSERT(index < carrier->entry_count); + + /* If the lock was in conflict, update the time spent waiting. */ + stats = lcnt_get_lock_stats__(info, file, line); + if(eltd->timer_set) { + erts_lcnt_time_t time_wait; + erts_lcnt_time_t timer; + + lcnt_time__(&timer); + + lcnt_time_diff__(&time_wait, &timer, &eltd->timer); + lcnt_update_stats__(stats, eltd->lock_in_conflict, &time_wait); + + eltd->timer_set--; + + ASSERT(eltd->timer_set >= 0); + } else { + lcnt_update_stats__(stats, eltd->lock_in_conflict, NULL); + } +} + +ERTS_GLB_INLINE +void erts_lcnt_unlock_idx(erts_lcnt_lock_info_carrier_t *carrier, int index) { + ASSERT(index < carrier->entry_count); + + erts_lcnt_unlock_opt_idx(carrier, index, ERTS_LOCK_OPTIONS_WRITE); +} + +ERTS_GLB_INLINE +void erts_lcnt_unlock_opt_idx(erts_lcnt_lock_info_carrier_t *carrier, int index, erts_lock_options_t option) { + erts_lcnt_lock_info_t *info = &carrier->entries[index]; + + ASSERT(index < carrier->entry_count); + + ASSERT((option & ERTS_LOCK_OPTIONS_READ) || (option & ERTS_LOCK_OPTIONS_WRITE)); + + if(option & ERTS_LOCK_OPTIONS_WRITE) { + lcnt_dec_lock_state__(&info->w_state); + } + + if(option & ERTS_LOCK_OPTIONS_READ) { + ASSERT(info->flags & ERTS_LOCK_FLAGS_PROPERTY_READ_WRITE); + lcnt_dec_lock_state__(&info->r_state); + } +} + +ERTS_GLB_INLINE +void erts_lcnt_lock_unacquire_idx(erts_lcnt_lock_info_carrier_t *carrier, int index) { + erts_lcnt_lock_info_t *info = &carrier->entries[index]; + + ASSERT(index < carrier->entry_count); + + lcnt_dec_lock_state__(&info->w_state); +} + +ERTS_GLB_INLINE +void erts_lcnt_trylock_idx(erts_lcnt_lock_info_carrier_t *carrier, int index, int result) { + ASSERT(index < carrier->entry_count); + + erts_lcnt_trylock_opt_idx(carrier, index, result, ERTS_LOCK_OPTIONS_WRITE); +} + +ERTS_GLB_INLINE +void erts_lcnt_trylock_opt_idx(erts_lcnt_lock_info_carrier_t *carrier, int index, int result, erts_lock_options_t option) { + erts_lcnt_lock_info_t *info = &carrier->entries[index]; + + ASSERT(index < carrier->entry_count); + + ASSERT((option & ERTS_LOCK_OPTIONS_READ) || (option & ERTS_LOCK_OPTIONS_WRITE)); + + if(result != EBUSY) { + if(option & ERTS_LOCK_OPTIONS_WRITE) { + ethr_atomic_inc(&info->w_state); + } + + if(option & ERTS_LOCK_OPTIONS_READ) { + ASSERT(info->flags & ERTS_LOCK_FLAGS_PROPERTY_READ_WRITE); + ethr_atomic_inc(&info->r_state); + } + + lcnt_update_stats__(&info->location_stats[0], 0, NULL); + } else { + ethr_atomic_inc(&info->location_stats[0].attempts); + ethr_atomic_inc(&info->location_stats[0].collisions); + } +} + +ERTS_GLB_INLINE +void erts_lcnt_init_lock_info_idx(erts_lcnt_lock_info_carrier_t *carrier, int index, + const char *name, Eterm id, erts_lock_flags_t flags) { + erts_lcnt_lock_info_t *info = &carrier->entries[index]; + + ASSERT(is_immed(id)); + + ASSERT(flags & ERTS_LOCK_FLAGS_MASK_TYPE); + ASSERT(flags & ERTS_LOCK_FLAGS_MASK_CATEGORY); + + info->flags = flags; + info->name = name; + info->id = id; +} + +ERTS_GLB_INLINE +void lcnt_retain_carrier__(erts_lcnt_lock_info_carrier_t *carrier) { +#ifdef DEBUG + ASSERT(ethr_atomic_inc_read_acqb(&carrier->ref_count) >= 2); +#else + ethr_atomic_inc_acqb(&carrier->ref_count); +#endif +} + +ERTS_GLB_INLINE +void lcnt_release_carrier__(erts_lcnt_lock_info_carrier_t *carrier) { + ethr_sint_t count = ethr_atomic_dec_read_relb(&carrier->ref_count); + + ASSERT(count >= 0); + + if(count == 0) { + lcnt_deallocate_carrier__(carrier); + } +} + +#endif #endif /* ifdef ERTS_ENABLE_LOCK_COUNT */ #endif /* ifndef ERTS_LOCK_COUNT_H__ */ diff --git a/erts/emulator/beam/erl_lock_flags.c b/erts/emulator/beam/erl_lock_flags.c new file mode 100644 index 0000000000..e0a0e95c09 --- /dev/null +++ b/erts/emulator/beam/erl_lock_flags.c @@ -0,0 +1,59 @@ +/* + * %CopyrightBegin% + * + * Copyright Ericsson AB 2017. All Rights Reserved. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + * %CopyrightEnd% + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include "erl_lock_flags.h" + +const char *erts_lock_flags_get_type_name(erts_lock_flags_t flags) { + switch(flags & ERTS_LOCK_FLAGS_MASK_TYPE) { + case ERTS_LOCK_FLAGS_TYPE_PROCLOCK: + return "proclock"; + case ERTS_LOCK_FLAGS_TYPE_MUTEX: + if(flags & ERTS_LOCK_FLAGS_PROPERTY_READ_WRITE) { + return "rw_mutex"; + } + + return "mutex"; + case ERTS_LOCK_FLAGS_TYPE_SPINLOCK: + if(flags & ERTS_LOCK_FLAGS_PROPERTY_READ_WRITE) { + return "rw_spinlock"; + } + + return "spinlock"; + default: + return "garbage"; + } +} + +const char *erts_lock_options_get_short_desc(erts_lock_options_t options) { + switch(options) { + case ERTS_LOCK_OPTIONS_RDWR: + return "rw"; + case ERTS_LOCK_OPTIONS_READ: + return "r"; + case ERTS_LOCK_OPTIONS_WRITE: + return "w"; + default: + return "none"; + } +} diff --git a/erts/emulator/beam/erl_lock_flags.h b/erts/emulator/beam/erl_lock_flags.h new file mode 100644 index 0000000000..d711f69456 --- /dev/null +++ b/erts/emulator/beam/erl_lock_flags.h @@ -0,0 +1,78 @@ +/* + * %CopyrightBegin% + * + * Copyright Ericsson AB 2017. All Rights Reserved. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + * %CopyrightEnd% + */ + +#ifndef ERTS_LOCK_FLAGS_H__ +#define ERTS_LOCK_FLAGS_H__ + +#define ERTS_LOCK_OPTIONS_READ (1 << 1) +#define ERTS_LOCK_OPTIONS_WRITE (1 << 2) + +#define ERTS_LOCK_OPTIONS_RDWR (ERTS_LOCK_OPTIONS_READ | ERTS_LOCK_OPTIONS_WRITE) + +/* Property/category are bitfields to simplify their use in masks. */ +#define ERTS_LOCK_FLAGS_MASK_CATEGORY (0xFFC0) +#define ERTS_LOCK_FLAGS_MASK_PROPERTY (0x0030) + +/* Type is a plain number. */ +#define ERTS_LOCK_FLAGS_MASK_TYPE (0x000F) + +#define ERTS_LOCK_FLAGS_TYPE_SPINLOCK (1) +#define ERTS_LOCK_FLAGS_TYPE_MUTEX (2) +#define ERTS_LOCK_FLAGS_TYPE_PROCLOCK (3) + +/* "Static" guarantees that the lock will never be destroyed once created. */ +#define ERTS_LOCK_FLAGS_PROPERTY_STATIC (1 << 4) +#define ERTS_LOCK_FLAGS_PROPERTY_READ_WRITE (1 << 5) + +#define ERTS_LOCK_FLAGS_CATEGORY_ALLOCATOR (1 << 6) +#define ERTS_LOCK_FLAGS_CATEGORY_PROCESS (1 << 7) +#define ERTS_LOCK_FLAGS_CATEGORY_IO (1 << 8) +#define ERTS_LOCK_FLAGS_CATEGORY_DB (1 << 9) +#define ERTS_LOCK_FLAGS_CATEGORY_DEBUG (1 << 10) +#define ERTS_LOCK_FLAGS_CATEGORY_SCHEDULER (1 << 11) +#define ERTS_LOCK_FLAGS_CATEGORY_GENERIC (1 << 12) +#define ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION (1 << 13) + +#define ERTS_LOCK_TYPE_SPINLOCK \ + (ERTS_LOCK_FLAGS_TYPE_SPINLOCK) +#define ERTS_LOCK_TYPE_RWSPINLOCK \ + (ERTS_LOCK_TYPE_SPINLOCK | \ + ERTS_LOCK_FLAGS_PROPERTY_READ_WRITE) +#define ERTS_LOCK_TYPE_MUTEX \ + (ERTS_LOCK_FLAGS_TYPE_MUTEX) +#define ERTS_LOCK_TYPE_RWMUTEX \ + (ERTS_LOCK_TYPE_MUTEX | \ + ERTS_LOCK_FLAGS_PROPERTY_READ_WRITE) +#define ERTS_LOCK_TYPE_PROCLOCK \ + (ERTS_LOCK_FLAGS_CATEGORY_PROCESS | \ + ERTS_LOCK_FLAGS_TYPE_PROCLOCK) + +/* -- -- */ + +typedef unsigned short erts_lock_flags_t; +typedef unsigned short erts_lock_options_t; + +/* @brief Gets the type name of the lock, honoring the RW flag if supplied. */ +const char *erts_lock_flags_get_type_name(erts_lock_flags_t flags); + +/* @brief Gets a short-form description of the given lock options. (rw/r/w) */ +const char *erts_lock_options_get_short_desc(erts_lock_options_t options); + +#endif /* ERTS_LOCK_FLAGS_H__ */ diff --git a/erts/emulator/beam/erl_msacc.c b/erts/emulator/beam/erl_msacc.c index 2d70f0d874..6c477be615 100644 --- a/erts/emulator/beam/erl_msacc.c +++ b/erts/emulator/beam/erl_msacc.c @@ -76,7 +76,8 @@ void erts_msacc_early_init(void) { #ifndef ERTS_MSACC_ALWAYS_ON erts_msacc_enabled = 0; #endif - erts_rwmtx_init(&msacc_mutex,"msacc_list_mutex"); + erts_rwmtx_init(&msacc_mutex, "msacc_list_mutex", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DEBUG); #ifdef USE_THREADS erts_tsd_key_create(&erts_msacc_key,"erts_msacc_key"); #else @@ -109,7 +110,8 @@ void erts_msacc_init_thread(char *type, int id, int managed) { #ifdef USE_THREADS erts_rwmtx_rwlock(&msacc_mutex); if (!managed) { - erts_mtx_init(&msacc->mtx,"msacc_unmanaged_mutex"); + erts_mtx_init(&msacc->mtx, "msacc_unmanaged_mutex", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DEBUG); msacc->next = msacc_unmanaged; msacc_unmanaged = msacc; msacc_unmanaged_count++; diff --git a/erts/emulator/beam/erl_mtrace.c b/erts/emulator/beam/erl_mtrace.c index 19bb7d5b31..f2a660f085 100644 --- a/erts/emulator/beam/erl_mtrace.c +++ b/erts/emulator/beam/erl_mtrace.c @@ -583,8 +583,10 @@ void erts_mtrace_init(char *receiver, char *nodename) byte ip_addr[4]; Uint16 port; - erts_mtx_init(&mtrace_buf_mutex, "mtrace_buf"); - erts_mtx_init(&mtrace_op_mutex, "mtrace_op"); + erts_mtx_init(&mtrace_buf_mutex, "mtrace_buf", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DEBUG); + erts_mtx_init(&mtrace_op_mutex, "mtrace_op", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DEBUG); socket_desc = erts_sock_open(); if (socket_desc == ERTS_SOCK_INVALID_SOCKET) { diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c index 4815e5e7bb..d3c5af3a83 100644 --- a/erts/emulator/beam/erl_nif.c +++ b/erts/emulator/beam/erl_nif.c @@ -889,26 +889,27 @@ static Eterm call_whereis(ErlNifEnv *env, Eterm name) Process *c_p; Eterm res; int scheduler; - int unlock; execution_state(env, &c_p, &scheduler); ASSERT((c_p && scheduler) || (!c_p && !scheduler)); - unlock = 0; if (scheduler < 0) { /* dirty scheduler */ if (ERTS_PROC_IS_EXITING(c_p)) return 0; - if (env->proc->static_flags & ERTS_STC_FLG_SHADOW_PROC) { - erts_smp_proc_lock(c_p, ERTS_PROC_LOCK_MAIN); - unlock = 1; - } + if (env->proc->static_flags & ERTS_STC_FLG_SHADOW_PROC) + c_p = NULL; /* as we don't have main lock */ } - res = erts_whereis_name_to_id(c_p, name); - if (unlock) - erts_smp_proc_unlock(c_p, ERTS_PROC_LOCK_MAIN); + + if (c_p) { + /* main lock may be released below and c_p->htop updated by others */ + flush_env(env); + } + res = erts_whereis_name_to_id(c_p, name); + if (c_p) + cache_env(env); return res; } @@ -2456,7 +2457,8 @@ void* enif_alloc_resource(ErlNifResourceType* type, size_t data_sz) erts_refc_inc(&resource->type->refc, 2); if (type->down) { resource->monitors = (ErtsResourceMonitors*) (resource->data + monitors_offs); - erts_smp_mtx_init(&resource->monitors->lock, "resource_monitors"); + erts_smp_mtx_init(&resource->monitors->lock, "resource_monitors", NIL, + ERTS_LOCK_FLAGS_CATEGORY_GENERIC); resource->monitors->root = NULL; resource->monitors->pending_failed_fire = 0; resource->monitors->is_dying = 0; diff --git a/erts/emulator/beam/erl_node_tables.c b/erts/emulator/beam/erl_node_tables.c index 3c5945d48d..deadf435e9 100644 --- a/erts/emulator/beam/erl_node_tables.c +++ b/erts/emulator/beam/erl_node_tables.c @@ -85,21 +85,20 @@ dist_table_cmp(void *dep1, void *dep2) static void* dist_table_alloc(void *dep_tmpl) { - Eterm chnl_nr; Eterm sysname; DistEntry *dep; erts_smp_rwmtx_opt_t rwmtx_opt = ERTS_SMP_RWMTX_OPT_DEFAULT_INITER; rwmtx_opt.type = ERTS_SMP_RWMTX_TYPE_FREQUENT_READ; sysname = ((DistEntry *) dep_tmpl)->sysname; - chnl_nr = make_small((Uint) atom_val(sysname)); dep = (DistEntry *) erts_alloc(ERTS_ALC_T_DIST_ENTRY, sizeof(DistEntry)); dist_entries++; dep->prev = NULL; erts_smp_refc_init(&dep->refc, -1); - erts_smp_rwmtx_init_opt_x(&dep->rwmtx, &rwmtx_opt, "dist_entry", chnl_nr); + erts_smp_rwmtx_init_opt(&dep->rwmtx, &rwmtx_opt, "dist_entry", sysname, + ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION); dep->sysname = sysname; dep->cid = NIL; dep->connection_id = 0; @@ -107,12 +106,14 @@ dist_table_alloc(void *dep_tmpl) dep->flags = 0; dep->version = 0; - erts_smp_mtx_init_x(&dep->lnk_mtx, "dist_entry_links", chnl_nr); + erts_smp_mtx_init(&dep->lnk_mtx, "dist_entry_links", sysname, + ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION); dep->node_links = NULL; dep->nlinks = NULL; dep->monitors = NULL; - erts_smp_mtx_init_x(&dep->qlock, "dist_entry_out_queue", chnl_nr); + erts_smp_mtx_init(&dep->qlock, "dist_entry_out_queue", sysname, + ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION); dep->qflgs = 0; dep->qsize = 0; dep->out_queue.first = NULL; @@ -760,8 +761,10 @@ void erts_init_node_tables(int dd_sec) rwmtx_opt.type = ERTS_SMP_RWMTX_TYPE_FREQUENT_READ; rwmtx_opt.lived = ERTS_SMP_RWMTX_LONG_LIVED; - erts_smp_rwmtx_init_opt(&erts_node_table_rwmtx, &rwmtx_opt, "node_table"); - erts_smp_rwmtx_init_opt(&erts_dist_table_rwmtx, &rwmtx_opt, "dist_table"); + erts_smp_rwmtx_init_opt(&erts_node_table_rwmtx, &rwmtx_opt, "node_table", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION); + erts_smp_rwmtx_init_opt(&erts_dist_table_rwmtx, &rwmtx_opt, "dist_table", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION); f.hash = (H_FUN) dist_table_hash; f.cmp = (HCMP_FUN) dist_table_cmp; @@ -818,6 +821,33 @@ int erts_lc_is_de_rlocked(DistEntry *dep) #endif #endif +#ifdef ERTS_ENABLE_LOCK_COUNT + +static void erts_lcnt_enable_dist_lock_count(void *dep_raw, void *enable) { + DistEntry *dep = (DistEntry*)dep_raw; + + if(enable) { + erts_lcnt_install_new_lock_info(&dep->rwmtx.lcnt, "dist_entry", dep->sysname, + ERTS_LOCK_TYPE_RWMUTEX | ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION); + erts_lcnt_install_new_lock_info(&dep->lnk_mtx.lcnt, "dist_entry_links", dep->sysname, + ERTS_LOCK_TYPE_MUTEX | ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION); + erts_lcnt_install_new_lock_info(&dep->qlock.lcnt, "dist_entry_out_queue", dep->sysname, + ERTS_LOCK_TYPE_MUTEX | ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION); + } else { + erts_lcnt_uninstall(&dep->rwmtx.lcnt); + erts_lcnt_uninstall(&dep->lnk_mtx.lcnt); + erts_lcnt_uninstall(&dep->qlock.lcnt); + } +} + +void erts_lcnt_update_distribution_locks(int enable) { + erts_smp_rwmtx_rlock(&erts_dist_table_rwmtx); + hash_foreach(&erts_dist_table, erts_lcnt_enable_dist_lock_count, + (void*)(UWord)enable); + erts_smp_rwmtx_runlock(&erts_dist_table_rwmtx); +} +#endif + /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\ * The following is only supposed to be used for testing, and debugging. * * * diff --git a/erts/emulator/beam/erl_node_tables.h b/erts/emulator/beam/erl_node_tables.h index 489da1ba17..91bcb4fce1 100644 --- a/erts/emulator/beam/erl_node_tables.h +++ b/erts/emulator/beam/erl_node_tables.h @@ -195,6 +195,10 @@ int erts_lc_is_de_rwlocked(DistEntry *); int erts_lc_is_de_rlocked(DistEntry *); #endif +#ifdef ERTS_ENABLE_LOCK_COUNT +void erts_lcnt_update_distribution_locks(int enable); +#endif + ERTS_GLB_INLINE void erts_deref_dist_entry(DistEntry *dep); ERTS_GLB_INLINE void erts_deref_node_entry(ErlNode *np); ERTS_GLB_INLINE void erts_smp_de_rlock(DistEntry *dep); diff --git a/erts/emulator/beam/erl_port_task.h b/erts/emulator/beam/erl_port_task.h index 9cca62ffaf..39f403b443 100644 --- a/erts/emulator/beam/erl_port_task.h +++ b/erts/emulator/beam/erl_port_task.h @@ -188,13 +188,7 @@ erts_port_task_init_sched(ErtsPortTaskSched *ptsp, Eterm instr_id) ptsp->taskq.in.last = NULL; erts_smp_atomic32_init_nob(&ptsp->flags, 0); #ifdef ERTS_SMP -#ifdef ERTS_ENABLE_LOCK_COUNT - erts_mtx_init_x_opt(&ptsp->mtx, lock_str, instr_id, - ((erts_lcnt_rt_options & ERTS_LCNT_OPT_PORTLOCK) - ? 0 : ERTS_LCNT_LT_DISABLE)); -#else - erts_mtx_init_x(&ptsp->mtx, lock_str, instr_id); -#endif + erts_mtx_init(&ptsp->mtx, lock_str, instr_id, ERTS_LOCK_FLAGS_CATEGORY_IO); #endif } diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c index fc2b34e70f..359fd83522 100644 --- a/erts/emulator/beam/erl_process.c +++ b/erts/emulator/beam/erl_process.c @@ -841,7 +841,9 @@ erts_late_init_process(void) { int ix; - erts_smp_spinlock_init(&erts_sched_stat.lock, "sched_stat"); + erts_smp_spinlock_init(&erts_sched_stat.lock, "sched_stat", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_SCHEDULER); + for (ix = 0; ix < ERTS_NO_PRIO_LEVELS; ix++) { Eterm atom; char *atom_str; @@ -2010,12 +2012,13 @@ erts_schedule_multi_misc_aux_work(int ignore_self, int id, self = 0; if (ignore_self) { - ErtsSchedulerData *esdp = erts_get_scheduler_data(); -#ifdef ERTS_DIRTY_SCHEDULERS - ASSERT(!ERTS_SCHEDULER_IS_DIRTY(esdp)); -#endif - if (esdp) - self = (int) esdp->no; + ErtsSchedulerData *esdp = erts_get_scheduler_data(); + + /* ignore_self is meaningless on dirty schedulers since aux work can + * only run on normal schedulers, and their ids do not translate. */ + if(esdp && !ERTS_SCHEDULER_IS_DIRTY(esdp)) { + self = (int)esdp->no; + } } ASSERT(0 < max_sched && max_sched <= erts_no_schedulers); @@ -6232,13 +6235,17 @@ erts_init_scheduling(int no_schedulers, int no_schedulers_online * id if the esdp->no <-> ix+1 mapping change. */ - erts_smp_mtx_init_x(&rq->mtx, "run_queue", make_small(ix + 1)); + erts_smp_mtx_init(&rq->mtx, "run_queue", make_small(ix + 1), + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_SCHEDULER); erts_smp_cnd_init(&rq->cnd); #ifdef ERTS_DIRTY_SCHEDULERS #ifdef ERTS_SMP - if (ERTS_RUNQ_IX_IS_DIRTY(ix)) - erts_smp_spinlock_init(&rq->sleepers.lock, "dirty_run_queue_sleep_list"); + if (ERTS_RUNQ_IX_IS_DIRTY(ix)) { + erts_smp_spinlock_init(&rq->sleepers.lock, "dirty_run_queue_sleep_list", + make_small(ix + 1), + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_SCHEDULER); + } rq->sleepers.list = NULL; #endif #endif @@ -6431,7 +6438,8 @@ erts_init_scheduling(int no_schedulers, int no_schedulers_online init_no_runqs(no_schedulers_online, no_schedulers_online); balance_info.last_active_runqs = no_schedulers; - erts_smp_mtx_init(&balance_info.update_mtx, "migration_info_update"); + erts_smp_mtx_init(&balance_info.update_mtx, "migration_info_update", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_SCHEDULER); balance_info.forced_check_balance = 0; balance_info.halftime = 1; balance_info.full_reds_history_index = 0; @@ -7493,7 +7501,8 @@ sched_set_suspended_sleeptype(ErtsSchedulerSleepInfo *ssi) static void init_scheduler_suspend(void) { - erts_smp_mtx_init(&schdlr_sspnd.mtx, "schdlr_sspnd"); + erts_smp_mtx_init(&schdlr_sspnd.mtx, "schdlr_sspnd", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_SCHEDULER); schdlr_sspnd.online.normal = 1; schdlr_sspnd.curr_online.normal = 1; schdlr_sspnd.active.normal = 1; diff --git a/erts/emulator/beam/erl_process_lock.c b/erts/emulator/beam/erl_process_lock.c index c0e7380ed0..ff124d5ba7 100644 --- a/erts/emulator/beam/erl_process_lock.c +++ b/erts/emulator/beam/erl_process_lock.c @@ -112,21 +112,13 @@ static struct { erts_pix_lock_t erts_pix_locks[ERTS_NO_OF_PIX_LOCKS]; -#ifdef ERTS_ENABLE_LOCK_COUNT -static void lcnt_enable_proc_lock_count(Process *proc, int enable); -#endif - void erts_init_proc_lock(int cpus) { int i; for (i = 0; i < ERTS_NO_OF_PIX_LOCKS; i++) { -#ifdef ERTS_ENABLE_LOCK_COUNT - erts_mtx_init_x(&erts_pix_locks[i].u.mtx, - "pix_lock", make_small(i)); -#else - erts_mtx_init(&erts_pix_locks[i].u.mtx, "pix_lock"); -#endif + erts_mtx_init(&erts_pix_locks[i].u.mtx, "pix_lock", make_small(i), + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_PROCESS); } #if ERTS_PROC_LOCK_OWN_IMPL erts_thr_install_exit_handler(cleanup_tse); @@ -944,7 +936,7 @@ erts_pid2proc_opt(Process *c_p, erts_proc_inc_refc(proc); #if ERTS_PROC_LOCK_OWN_IMPL && defined(ERTS_ENABLE_LOCK_COUNT) - erts_lcnt_proc_lock_unaquire(&proc->lock, lcnt_locks); + erts_lcnt_proc_lock_unacquire(&proc->lock, lcnt_locks); #endif managed = dhndl == ERTS_THR_PRGR_DHANDLE_MANAGED; @@ -1062,32 +1054,38 @@ erts_proc_lock_init(Process *p) #endif #elif ERTS_PROC_LOCK_RAW_MUTEX_IMPL - erts_mtx_init_x(&p->lock.main, "proc_main", p->common.id); + erts_mtx_init(&p->lock.main, "proc_main", p->common.id, + ERTS_LOCK_FLAGS_CATEGORY_PROCESS); ethr_mutex_lock(&p->lock.main.mtx); #ifdef ERTS_ENABLE_LOCK_CHECK erts_lc_trylock(1, &p->lock.main.lc); #endif - erts_mtx_init_x(&p->lock.link, "proc_link", p->common.id); + erts_mtx_init(&p->lock.link, "proc_link", p->common.id, + ERTS_LOCK_FLAGS_CATEGORY_PROCESS); ethr_mutex_lock(&p->lock.link.mtx); #ifdef ERTS_ENABLE_LOCK_CHECK erts_lc_trylock(1, &p->lock.link.lc); #endif - erts_mtx_init_x(&p->lock.msgq, "proc_msgq", p->common.id); + erts_mtx_init(&p->lock.msgq, "proc_msgq", p->common.id, + ERTS_LOCK_FLAGS_CATEGORY_PROCESS); ethr_mutex_lock(&p->lock.msgq.mtx); #ifdef ERTS_ENABLE_LOCK_CHECK erts_lc_trylock(1, &p->lock.msgq.lc); #endif - erts_mtx_init_x(&p->lock.btm, "proc_btm", p->common.id); + erts_mtx_init(&p->lock.btm, "proc_btm", p->common.id, + ERTS_LOCK_FLAGS_CATEGORY_PROCESS); ethr_mutex_lock(&p->lock.btm.mtx); #ifdef ERTS_ENABLE_LOCK_CHECK erts_lc_trylock(1, &p->lock.btm.lc); #endif - erts_mtx_init_x(&p->lock.status, "proc_status", p->common.id); + erts_mtx_init(&p->lock.status, "proc_status", p->common.id, + ERTS_LOCK_FLAGS_CATEGORY_PROCESS); ethr_mutex_lock(&p->lock.status.mtx); #ifdef ERTS_ENABLE_LOCK_CHECK erts_lc_trylock(1, &p->lock.status.lc); #endif - erts_mtx_init_x(&p->lock.trace, "proc_trace", p->common.id); + erts_mtx_init(&p->lock.trace, "proc_trace", p->common.id, + ERTS_LOCK_FLAGS_CATEGORY_PROCESS); ethr_mutex_lock(&p->lock.trace.mtx); #ifdef ERTS_ENABLE_LOCK_CHECK erts_lc_trylock(1, &p->lock.trace.lc); @@ -1124,117 +1122,70 @@ erts_proc_lock_fin(Process *p) #if ERTS_PROC_LOCK_OWN_IMPL && defined(ERTS_ENABLE_LOCK_COUNT) -void erts_lcnt_enable_proc_lock_count(int enable) { - int ix, max = erts_ptab_max(&erts_proc); - Process *proc = NULL; - for (ix = 0; ix < max; ++ix) { - if ((proc = erts_pix2proc(ix)) != NULL) - lcnt_enable_proc_lock_count(proc, enable); - } /* for all processes */ -} - void erts_lcnt_proc_lock_init(Process *p) { - if (!(erts_lcnt_rt_options & ERTS_LCNT_OPT_PROCLOCK)) { - erts_lcnt_init_lock_empty(&(p->lock.lcnt_main)); - erts_lcnt_init_lock_empty(&(p->lock.lcnt_link)); - erts_lcnt_init_lock_empty(&(p->lock.lcnt_msgq)); - erts_lcnt_init_lock_empty(&(p->lock.lcnt_btm)); - erts_lcnt_init_lock_empty(&(p->lock.lcnt_status)); - erts_lcnt_init_lock_empty(&(p->lock.lcnt_trace)); - } else { /* now the common case */ - Eterm pid = (p->common.id != ERTS_INVALID_PID) ? p->common.id : NIL; - erts_lcnt_init_lock_x(&(p->lock.lcnt_main), "proc_main", ERTS_LCNT_LT_PROCLOCK, pid); - erts_lcnt_init_lock_x(&(p->lock.lcnt_link), "proc_link", ERTS_LCNT_LT_PROCLOCK, pid); - erts_lcnt_init_lock_x(&(p->lock.lcnt_msgq), "proc_msgq", ERTS_LCNT_LT_PROCLOCK, pid); - erts_lcnt_init_lock_x(&(p->lock.lcnt_btm), "proc_btm", ERTS_LCNT_LT_PROCLOCK, pid); - erts_lcnt_init_lock_x(&(p->lock.lcnt_status),"proc_status",ERTS_LCNT_LT_PROCLOCK, pid); - erts_lcnt_init_lock_x(&(p->lock.lcnt_trace), "proc_trace", ERTS_LCNT_LT_PROCLOCK, pid); - } /* the lock names should really be aligned to four characters */ + erts_lcnt_init_ref(&p->lock.lcnt_carrier); + + if(erts_lcnt_check_enabled(ERTS_LOCK_FLAGS_CATEGORY_PROCESS)) { + erts_lcnt_enable_proc_lock_count(p, 1); + } } /* logic reversed */ void erts_lcnt_proc_lock_destroy(Process *p) { - erts_lcnt_destroy_lock(&(p->lock.lcnt_main)); - erts_lcnt_destroy_lock(&(p->lock.lcnt_link)); - erts_lcnt_destroy_lock(&(p->lock.lcnt_msgq)); - erts_lcnt_destroy_lock(&(p->lock.lcnt_btm)); - erts_lcnt_destroy_lock(&(p->lock.lcnt_status)); - erts_lcnt_destroy_lock(&(p->lock.lcnt_trace)); + erts_lcnt_uninstall(&p->lock.lcnt_carrier); } -static void lcnt_enable_proc_lock_count(Process *proc, int enable) { - if (enable) { - if (!ERTS_LCNT_LOCK_TYPE(&(proc->lock.lcnt_main))) { - erts_lcnt_proc_lock_init(proc); - } - } - else { - if (ERTS_LCNT_LOCK_TYPE(&(proc->lock.lcnt_main))) { - erts_lcnt_proc_lock_destroy(proc); - } +void erts_lcnt_enable_proc_lock_count(Process *proc, int enable) { + if(proc->common.id == ERTS_INVALID_PID) { + /* Locks without an id are more trouble than they're worth; there's no + * way to look them up and we can't track them with _STATIC since it's + * too early to tell whether we're a system process (proc->static_flags + * hasn't been not set yet). */ + } else if(!enable) { + erts_lcnt_proc_lock_destroy(proc); + } else if(!erts_lcnt_check_ref_installed(&proc->lock.lcnt_carrier)) { + erts_lcnt_lock_info_carrier_t *carrier; + + carrier = erts_lcnt_create_lock_info_carrier(ERTS_LCNT_PROCLOCK_COUNT); + + erts_lcnt_init_lock_info_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MAIN, + "proc_main", proc->common.id, ERTS_LOCK_TYPE_PROCLOCK); + erts_lcnt_init_lock_info_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_LINK, + "proc_link", proc->common.id, ERTS_LOCK_TYPE_PROCLOCK); + erts_lcnt_init_lock_info_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MSGQ, + "proc_msgq", proc->common.id, ERTS_LOCK_TYPE_PROCLOCK); + erts_lcnt_init_lock_info_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_BTM, + "proc_btm", proc->common.id, ERTS_LOCK_TYPE_PROCLOCK); + erts_lcnt_init_lock_info_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_STATUS, + "proc_status",proc->common.id, ERTS_LOCK_TYPE_PROCLOCK); + erts_lcnt_init_lock_info_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_TRACE, + "proc_trace", proc->common.id, ERTS_LOCK_TYPE_PROCLOCK); + + erts_lcnt_install(&proc->lock.lcnt_carrier, carrier); } } -void erts_lcnt_proc_lock(erts_proc_lock_t *lock, ErtsProcLocks locks) { - if (!(erts_lcnt_rt_options & ERTS_LCNT_OPT_PROCLOCK)) return; - if (locks & ERTS_PROC_LOCK_MAIN) { erts_lcnt_lock(&(lock->lcnt_main)); } - if (locks & ERTS_PROC_LOCK_LINK) { erts_lcnt_lock(&(lock->lcnt_link)); } - if (locks & ERTS_PROC_LOCK_MSGQ) { erts_lcnt_lock(&(lock->lcnt_msgq)); } - if (locks & ERTS_PROC_LOCK_BTM) { erts_lcnt_lock(&(lock->lcnt_btm)); } - if (locks & ERTS_PROC_LOCK_STATUS) { erts_lcnt_lock(&(lock->lcnt_status)); } - if (locks & ERTS_PROC_LOCK_TRACE) { erts_lcnt_lock(&(lock->lcnt_trace)); } -} +void erts_lcnt_update_process_locks(int enable) { + int i, max; -void erts_lcnt_proc_lock_post_x(erts_proc_lock_t *lock, ErtsProcLocks locks, - char *file, unsigned int line) { - if (!(erts_lcnt_rt_options & ERTS_LCNT_OPT_PROCLOCK)) return; - if (locks & ERTS_PROC_LOCK_MAIN) { - erts_lcnt_lock_post_x(&(lock->lcnt_main), file, line); - } - if (locks & ERTS_PROC_LOCK_LINK) { - erts_lcnt_lock_post_x(&(lock->lcnt_link), file, line); - } - if (locks & ERTS_PROC_LOCK_MSGQ) { - erts_lcnt_lock_post_x(&(lock->lcnt_msgq), file, line); - } - if (locks & ERTS_PROC_LOCK_BTM) { - erts_lcnt_lock_post_x(&(lock->lcnt_btm), file, line); - } - if (locks & ERTS_PROC_LOCK_STATUS) { - erts_lcnt_lock_post_x(&(lock->lcnt_status), file, line); - } - if (locks & ERTS_PROC_LOCK_TRACE) { - erts_lcnt_lock_post_x(&(lock->lcnt_trace), file, line); - } -} + max = erts_ptab_max(&erts_proc); -void erts_lcnt_proc_lock_unaquire(erts_proc_lock_t *lock, ErtsProcLocks locks) { - if (!(erts_lcnt_rt_options & ERTS_LCNT_OPT_PROCLOCK)) return; - if (locks & ERTS_PROC_LOCK_MAIN) { erts_lcnt_lock_unaquire(&(lock->lcnt_main)); } - if (locks & ERTS_PROC_LOCK_LINK) { erts_lcnt_lock_unaquire(&(lock->lcnt_link)); } - if (locks & ERTS_PROC_LOCK_MSGQ) { erts_lcnt_lock_unaquire(&(lock->lcnt_msgq)); } - if (locks & ERTS_PROC_LOCK_BTM) { erts_lcnt_lock_unaquire(&(lock->lcnt_btm)); } - if (locks & ERTS_PROC_LOCK_STATUS) { erts_lcnt_lock_unaquire(&(lock->lcnt_status)); } - if (locks & ERTS_PROC_LOCK_TRACE) { erts_lcnt_lock_unaquire(&(lock->lcnt_trace)); } -} + for(i = 0; i < max; i++) { + int delay_handle; + Process *proc; + + delay_handle = erts_thr_progress_unmanaged_delay(); + proc = erts_pix2proc(i); + + if(proc != NULL) { + erts_lcnt_enable_proc_lock_count(proc, enable); + } -void erts_lcnt_proc_unlock(erts_proc_lock_t *lock, ErtsProcLocks locks) { - if (!(erts_lcnt_rt_options & ERTS_LCNT_OPT_PROCLOCK)) return; - if (locks & ERTS_PROC_LOCK_MAIN) { erts_lcnt_unlock(&(lock->lcnt_main)); } - if (locks & ERTS_PROC_LOCK_LINK) { erts_lcnt_unlock(&(lock->lcnt_link)); } - if (locks & ERTS_PROC_LOCK_MSGQ) { erts_lcnt_unlock(&(lock->lcnt_msgq)); } - if (locks & ERTS_PROC_LOCK_BTM) { erts_lcnt_unlock(&(lock->lcnt_btm)); } - if (locks & ERTS_PROC_LOCK_STATUS) { erts_lcnt_unlock(&(lock->lcnt_status)); } - if (locks & ERTS_PROC_LOCK_TRACE) { erts_lcnt_unlock(&(lock->lcnt_trace)); } + if(delay_handle != ERTS_THR_PRGR_DHANDLE_MANAGED) { + erts_thr_progress_unmanaged_continue(delay_handle); + } + } } -void erts_lcnt_proc_trylock(erts_proc_lock_t *lock, ErtsProcLocks locks, int res) { - if (!(erts_lcnt_rt_options & ERTS_LCNT_OPT_PROCLOCK)) return; - if (locks & ERTS_PROC_LOCK_MAIN) { erts_lcnt_trylock(&(lock->lcnt_main), res); } - if (locks & ERTS_PROC_LOCK_LINK) { erts_lcnt_trylock(&(lock->lcnt_link), res); } - if (locks & ERTS_PROC_LOCK_MSGQ) { erts_lcnt_trylock(&(lock->lcnt_msgq), res); } - if (locks & ERTS_PROC_LOCK_BTM) { erts_lcnt_trylock(&(lock->lcnt_btm), res); } - if (locks & ERTS_PROC_LOCK_STATUS) { erts_lcnt_trylock(&(lock->lcnt_status), res); } - if (locks & ERTS_PROC_LOCK_TRACE) { erts_lcnt_trylock(&(lock->lcnt_trace), res); } -} /* reversed logic */ + #endif /* ERTS_ENABLE_LOCK_COUNT */ @@ -1249,7 +1200,7 @@ erts_proc_lc_lock(Process *p, ErtsProcLocks locks, char *file, unsigned int line { erts_lc_lock_t lck = ERTS_LC_LOCK_INIT(-1, p->common.id, - ERTS_LC_FLG_LT_PROCLOCK); + ERTS_LOCK_TYPE_PROCLOCK); if (locks & ERTS_PROC_LOCK_MAIN) { lck.id = lc_id.proc_lock_main; erts_lc_lock_x(&lck,file,line); @@ -1282,7 +1233,7 @@ erts_proc_lc_trylock(Process *p, ErtsProcLocks locks, int locked, { erts_lc_lock_t lck = ERTS_LC_LOCK_INIT(-1, p->common.id, - ERTS_LC_FLG_LT_PROCLOCK); + ERTS_LOCK_TYPE_PROCLOCK); if (locks & ERTS_PROC_LOCK_MAIN) { lck.id = lc_id.proc_lock_main; erts_lc_trylock_x(locked, &lck, file, line); @@ -1314,7 +1265,7 @@ erts_proc_lc_unlock(Process *p, ErtsProcLocks locks) { erts_lc_lock_t lck = ERTS_LC_LOCK_INIT(-1, p->common.id, - ERTS_LC_FLG_LT_PROCLOCK); + ERTS_LOCK_TYPE_PROCLOCK); if (locks & ERTS_PROC_LOCK_TRACE) { lck.id = lc_id.proc_lock_trace; erts_lc_unlock(&lck); @@ -1349,7 +1300,7 @@ erts_proc_lc_might_unlock(Process *p, ErtsProcLocks locks) #if ERTS_PROC_LOCK_OWN_IMPL erts_lc_lock_t lck = ERTS_LC_LOCK_INIT(-1, p->common.id, - ERTS_LC_FLG_LT_PROCLOCK); + ERTS_LOCK_TYPE_PROCLOCK); if (locks & ERTS_PROC_LOCK_TRACE) { lck.id = lc_id.proc_lock_trace; erts_lc_might_unlock(&lck); @@ -1397,7 +1348,7 @@ erts_proc_lc_require_lock(Process *p, ErtsProcLocks locks, char *file, #if ERTS_PROC_LOCK_OWN_IMPL erts_lc_lock_t lck = ERTS_LC_LOCK_INIT(-1, p->common.id, - ERTS_LC_FLG_LT_PROCLOCK); + ERTS_LOCK_TYPE_PROCLOCK); if (locks & ERTS_PROC_LOCK_MAIN) { lck.id = lc_id.proc_lock_main; erts_lc_require_lock(&lck, file, line); @@ -1444,7 +1395,7 @@ erts_proc_lc_unrequire_lock(Process *p, ErtsProcLocks locks) #if ERTS_PROC_LOCK_OWN_IMPL erts_lc_lock_t lck = ERTS_LC_LOCK_INIT(-1, p->common.id, - ERTS_LC_FLG_LT_PROCLOCK); + ERTS_LOCK_TYPE_PROCLOCK); if (locks & ERTS_PROC_LOCK_TRACE) { lck.id = lc_id.proc_lock_trace; erts_lc_unrequire_lock(&lck); @@ -1493,7 +1444,7 @@ erts_proc_lc_trylock_force_busy(Process *p, ErtsProcLocks locks) if (locks & ERTS_PROC_LOCKS_ALL) { erts_lc_lock_t lck = ERTS_LC_LOCK_INIT(-1, p->common.id, - ERTS_LC_FLG_LT_PROCLOCK); + ERTS_LOCK_TYPE_PROCLOCK); if (locks & ERTS_PROC_LOCK_MAIN) lck.id = lc_id.proc_lock_main; @@ -1524,7 +1475,7 @@ void erts_proc_lc_chk_only_proc_main(Process *p) #if ERTS_PROC_LOCK_OWN_IMPL #define ERTS_PROC_LC_EMPTY_LOCK_INIT \ - ERTS_LC_LOCK_INIT(-1, THE_NON_VALUE, ERTS_LC_FLG_LT_PROCLOCK) + ERTS_LC_LOCK_INIT(-1, THE_NON_VALUE, ERTS_LOCK_TYPE_PROCLOCK) #endif /* ERTS_PROC_LOCK_OWN_IMPL */ void erts_proc_lc_chk_only_proc(Process *p, ErtsProcLocks locks) @@ -1739,22 +1690,22 @@ erts_proc_lc_my_proc_locks(Process *p) #if ERTS_PROC_LOCK_OWN_IMPL erts_lc_lock_t locks[6] = {ERTS_LC_LOCK_INIT(lc_id.proc_lock_main, p->common.id, - ERTS_LC_FLG_LT_PROCLOCK), + ERTS_LOCK_TYPE_PROCLOCK), ERTS_LC_LOCK_INIT(lc_id.proc_lock_link, p->common.id, - ERTS_LC_FLG_LT_PROCLOCK), + ERTS_LOCK_TYPE_PROCLOCK), ERTS_LC_LOCK_INIT(lc_id.proc_lock_msgq, p->common.id, - ERTS_LC_FLG_LT_PROCLOCK), + ERTS_LOCK_TYPE_PROCLOCK), ERTS_LC_LOCK_INIT(lc_id.proc_lock_btm, p->common.id, - ERTS_LC_FLG_LT_PROCLOCK), + ERTS_LOCK_TYPE_PROCLOCK), ERTS_LC_LOCK_INIT(lc_id.proc_lock_status, p->common.id, - ERTS_LC_FLG_LT_PROCLOCK), + ERTS_LOCK_TYPE_PROCLOCK), ERTS_LC_LOCK_INIT(lc_id.proc_lock_trace, p->common.id, - ERTS_LC_FLG_LT_PROCLOCK)}; + ERTS_LOCK_TYPE_PROCLOCK)}; #elif ERTS_PROC_LOCK_RAW_MUTEX_IMPL erts_lc_lock_t locks[6] = {p->lock.main.lc, p->lock.link.lc, diff --git a/erts/emulator/beam/erl_process_lock.h b/erts/emulator/beam/erl_process_lock.h index 6e704b185d..023ba4d4ae 100644 --- a/erts/emulator/beam/erl_process_lock.h +++ b/erts/emulator/beam/erl_process_lock.h @@ -78,13 +78,19 @@ typedef struct erts_proc_lock_t_ { ErtsProcLocks flags; #endif erts_tse_t *queue[ERTS_PROC_LOCK_MAX_BIT+1]; -#ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_lock_t lcnt_main; - erts_lcnt_lock_t lcnt_link; - erts_lcnt_lock_t lcnt_msgq; - erts_lcnt_lock_t lcnt_btm; - erts_lcnt_lock_t lcnt_status; - erts_lcnt_lock_t lcnt_trace; +#if defined(ERTS_ENABLE_LOCK_COUNT) && !ERTS_PROC_LOCK_RAW_MUTEX_IMPL + /* Each erts_mtx_t has its own lock counter ^ */ + + #define ERTS_LCNT_PROCLOCK_IDX_MAIN 0 + #define ERTS_LCNT_PROCLOCK_IDX_LINK 1 + #define ERTS_LCNT_PROCLOCK_IDX_MSGQ 2 + #define ERTS_LCNT_PROCLOCK_IDX_BTM 3 + #define ERTS_LCNT_PROCLOCK_IDX_STATUS 4 + #define ERTS_LCNT_PROCLOCK_IDX_TRACE 5 + + #define ERTS_LCNT_PROCLOCK_COUNT 6 + + erts_lcnt_ref_t lcnt_carrier; #endif #elif ERTS_PROC_LOCK_RAW_MUTEX_IMPL erts_mtx_t main; @@ -245,14 +251,170 @@ typedef struct erts_proc_lock_t_ { void erts_lcnt_proc_lock_init(Process *p); void erts_lcnt_proc_lock_destroy(Process *p); + +ERTS_GLB_INLINE void erts_lcnt_proc_lock(erts_proc_lock_t *lock, ErtsProcLocks locks); +ERTS_GLB_INLINE void erts_lcnt_proc_lock_post_x(erts_proc_lock_t *lock, ErtsProcLocks locks, char *file, unsigned int line); -void erts_lcnt_proc_lock_unaquire(erts_proc_lock_t *lock, ErtsProcLocks locks); +ERTS_GLB_INLINE +void erts_lcnt_proc_lock_unacquire(erts_proc_lock_t *lock, ErtsProcLocks locks); +ERTS_GLB_INLINE void erts_lcnt_proc_unlock(erts_proc_lock_t *lock, ErtsProcLocks locks); +ERTS_GLB_INLINE void erts_lcnt_proc_trylock(erts_proc_lock_t *lock, ErtsProcLocks locks, int res); -void erts_lcnt_enable_proc_lock_count(int enable); +void erts_lcnt_enable_proc_lock_count(Process *proc, int enable); +void erts_lcnt_update_process_locks(int enable); + +#if ERTS_GLB_INLINE_INCL_FUNC_DEF + +ERTS_GLB_INLINE +void erts_lcnt_proc_lock(erts_proc_lock_t *lock, ErtsProcLocks locks) { + erts_lcnt_lock_info_carrier_t *carrier; + int handle; + + if(erts_lcnt_open_ref(&lock->lcnt_carrier, &handle, &carrier)) { + if (locks & ERTS_PROC_LOCK_MAIN) { + erts_lcnt_lock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MAIN); + } + if (locks & ERTS_PROC_LOCK_LINK) { + erts_lcnt_lock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_LINK); + } + if (locks & ERTS_PROC_LOCK_MSGQ) { + erts_lcnt_lock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MSGQ); + } + if (locks & ERTS_PROC_LOCK_BTM) { + erts_lcnt_lock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_BTM); + } + if (locks & ERTS_PROC_LOCK_STATUS) { + erts_lcnt_lock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_STATUS); + } + if (locks & ERTS_PROC_LOCK_TRACE) { + erts_lcnt_lock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_TRACE); + } + + erts_lcnt_close_ref(handle, carrier); + } +} + +ERTS_GLB_INLINE +void erts_lcnt_proc_lock_post_x(erts_proc_lock_t *lock, ErtsProcLocks locks, + char *file, unsigned int line) { + erts_lcnt_lock_info_carrier_t *carrier; + int handle; + + if(erts_lcnt_open_ref(&lock->lcnt_carrier, &handle, &carrier)) { + if (locks & ERTS_PROC_LOCK_MAIN) { + erts_lcnt_lock_post_x_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MAIN, file, line); + } + if (locks & ERTS_PROC_LOCK_LINK) { + erts_lcnt_lock_post_x_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_LINK, file, line); + } + if (locks & ERTS_PROC_LOCK_MSGQ) { + erts_lcnt_lock_post_x_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MSGQ, file, line); + } + if (locks & ERTS_PROC_LOCK_BTM) { + erts_lcnt_lock_post_x_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_BTM, file, line); + } + if (locks & ERTS_PROC_LOCK_STATUS) { + erts_lcnt_lock_post_x_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_STATUS, file, line); + } + if (locks & ERTS_PROC_LOCK_TRACE) { + erts_lcnt_lock_post_x_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_TRACE, file, line); + } + + erts_lcnt_close_ref(handle, carrier); + } +} + +ERTS_GLB_INLINE +void erts_lcnt_proc_lock_unacquire(erts_proc_lock_t *lock, ErtsProcLocks locks) { + erts_lcnt_lock_info_carrier_t *carrier; + int handle; + + if(erts_lcnt_open_ref(&lock->lcnt_carrier, &handle, &carrier)) { + if (locks & ERTS_PROC_LOCK_MAIN) { + erts_lcnt_lock_unacquire_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MAIN); + } + if (locks & ERTS_PROC_LOCK_LINK) { + erts_lcnt_lock_unacquire_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_LINK); + } + if (locks & ERTS_PROC_LOCK_MSGQ) { + erts_lcnt_lock_unacquire_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MSGQ); + } + if (locks & ERTS_PROC_LOCK_BTM) { + erts_lcnt_lock_unacquire_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_BTM); + } + if (locks & ERTS_PROC_LOCK_STATUS) { + erts_lcnt_lock_unacquire_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_STATUS); + } + if (locks & ERTS_PROC_LOCK_TRACE) { + erts_lcnt_lock_unacquire_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_TRACE); + } + + erts_lcnt_close_ref(handle, carrier); + } +} + +ERTS_GLB_INLINE +void erts_lcnt_proc_unlock(erts_proc_lock_t *lock, ErtsProcLocks locks) { + erts_lcnt_lock_info_carrier_t *carrier; + int handle; + + if(erts_lcnt_open_ref(&lock->lcnt_carrier, &handle, &carrier)) { + if (locks & ERTS_PROC_LOCK_MAIN) { + erts_lcnt_unlock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MAIN); + } + if (locks & ERTS_PROC_LOCK_LINK) { + erts_lcnt_unlock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_LINK); + } + if (locks & ERTS_PROC_LOCK_MSGQ) { + erts_lcnt_unlock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MSGQ); + } + if (locks & ERTS_PROC_LOCK_BTM) { + erts_lcnt_unlock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_BTM); + } + if (locks & ERTS_PROC_LOCK_STATUS) { + erts_lcnt_unlock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_STATUS); + } + if (locks & ERTS_PROC_LOCK_TRACE) { + erts_lcnt_unlock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_TRACE); + } + + erts_lcnt_close_ref(handle, carrier); + } +} + +ERTS_GLB_INLINE +void erts_lcnt_proc_trylock(erts_proc_lock_t *lock, ErtsProcLocks locks, int res) { + erts_lcnt_lock_info_carrier_t *carrier; + int handle; + + if(erts_lcnt_open_ref(&lock->lcnt_carrier, &handle, &carrier)) { + if (locks & ERTS_PROC_LOCK_MAIN) { + erts_lcnt_trylock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MAIN, res); + } + if (locks & ERTS_PROC_LOCK_LINK) { + erts_lcnt_trylock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_LINK, res); + } + if (locks & ERTS_PROC_LOCK_MSGQ) { + erts_lcnt_trylock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MSGQ, res); + } + if (locks & ERTS_PROC_LOCK_BTM) { + erts_lcnt_trylock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_BTM, res); + } + if (locks & ERTS_PROC_LOCK_STATUS) { + erts_lcnt_trylock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_STATUS, res); + } + if (locks & ERTS_PROC_LOCK_TRACE) { + erts_lcnt_trylock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_TRACE, res); + } + + erts_lcnt_close_ref(handle, carrier); + } +} /* reversed logic */ +#endif /* ERTS_GLB_INLINE_INCL_FUNC_DEF */ #endif /* ERTS_ENABLE_LOCK_COUNT*/ diff --git a/erts/emulator/beam/erl_ptab.c b/erts/emulator/beam/erl_ptab.c index c3d59cb3a8..b3bcb3af3f 100644 --- a/erts/emulator/beam/erl_ptab.c +++ b/erts/emulator/beam/erl_ptab.c @@ -372,7 +372,8 @@ erts_ptab_init_table(ErtsPTab *ptab, rwmtx_opts.type = ERTS_SMP_RWMTX_TYPE_EXTREMELY_FREQUENT_READ; rwmtx_opts.lived = ERTS_SMP_RWMTX_LONG_LIVED; - erts_smp_rwmtx_init_opt(&ptab->list.data.rwmtx, &rwmtx_opts, name); + erts_smp_rwmtx_init_opt(&ptab->list.data.rwmtx, &rwmtx_opts, name, NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); erts_smp_atomic32_init_nob(&ptab->vola.tile.count, 0); last_data_init_nob(ptab, ~((Uint64) 0)); diff --git a/erts/emulator/beam/erl_smp.h b/erts/emulator/beam/erl_smp.h index 181736b009..696bdbdaf1 100644 --- a/erts/emulator/beam/erl_smp.h +++ b/erts/emulator/beam/erl_smp.h @@ -128,14 +128,14 @@ ERTS_GLB_INLINE int erts_smp_equal_tids(erts_smp_tid_t x, erts_smp_tid_t y); #define ERTS_SMP_HAVE_REC_MTX_INIT 1 ERTS_GLB_INLINE void erts_smp_rec_mtx_init(erts_smp_mtx_t *mtx); #endif -ERTS_GLB_INLINE void erts_smp_mtx_init_x(erts_smp_mtx_t *mtx, - char *name, - Eterm extra); -ERTS_GLB_INLINE void erts_smp_mtx_init_locked_x(erts_smp_mtx_t *mtx, - char *name, - Eterm extra); -ERTS_GLB_INLINE void erts_smp_mtx_init(erts_smp_mtx_t *mtx, char *name); -ERTS_GLB_INLINE void erts_smp_mtx_init_locked(erts_smp_mtx_t *mtx, char *name); +ERTS_GLB_INLINE void erts_smp_mtx_init(erts_smp_mtx_t *mtx, + char *name, + Eterm extra, + erts_lock_flags_t flags); +ERTS_GLB_INLINE void erts_smp_mtx_init_locked(erts_smp_mtx_t *mtx, + char *name, + Eterm extra, + erts_lock_flags_t flags); ERTS_GLB_INLINE void erts_smp_mtx_destroy(erts_smp_mtx_t *mtx); #ifdef ERTS_ENABLE_LOCK_POSITION ERTS_GLB_INLINE int erts_smp_mtx_trylock_x(erts_smp_mtx_t *mtx, char *file, unsigned int line); @@ -153,18 +153,15 @@ ERTS_GLB_INLINE void erts_smp_cnd_wait(erts_smp_cnd_t *cnd, ERTS_GLB_INLINE void erts_smp_cnd_signal(erts_smp_cnd_t *cnd); ERTS_GLB_INLINE void erts_smp_cnd_broadcast(erts_smp_cnd_t *cnd); ERTS_GLB_INLINE void erts_smp_rwmtx_set_reader_group(int no); -ERTS_GLB_INLINE void erts_smp_rwmtx_init_opt_x(erts_smp_rwmtx_t *rwmtx, - erts_smp_rwmtx_opt_t *opt, - char *name, - Eterm extra); -ERTS_GLB_INLINE void erts_smp_rwmtx_init_x(erts_smp_rwmtx_t *rwmtx, - char *name, - Eterm extra); ERTS_GLB_INLINE void erts_smp_rwmtx_init_opt(erts_smp_rwmtx_t *rwmtx, - erts_smp_rwmtx_opt_t *opt, - char *name); + erts_smp_rwmtx_opt_t *opt, + char *name, + Eterm extra, + erts_lock_flags_t flags); ERTS_GLB_INLINE void erts_smp_rwmtx_init(erts_smp_rwmtx_t *rwmtx, - char *name); + char *name, + Eterm extra, + erts_lock_flags_t flags); ERTS_GLB_INLINE void erts_smp_rwmtx_destroy(erts_smp_rwmtx_t *rwmtx); #ifdef ERTS_ENABLE_LOCK_POSITION ERTS_GLB_INLINE int erts_smp_rwmtx_tryrlock_x(erts_smp_rwmtx_t *rwmtx, char *file, unsigned int line); @@ -181,11 +178,10 @@ ERTS_GLB_INLINE void erts_smp_rwmtx_runlock(erts_smp_rwmtx_t *rwmtx); ERTS_GLB_INLINE void erts_smp_rwmtx_rwunlock(erts_smp_rwmtx_t *rwmtx); ERTS_GLB_INLINE int erts_smp_lc_rwmtx_is_rlocked(erts_smp_rwmtx_t *mtx); ERTS_GLB_INLINE int erts_smp_lc_rwmtx_is_rwlocked(erts_smp_rwmtx_t *mtx); -ERTS_GLB_INLINE void erts_smp_spinlock_init_x(erts_smp_spinlock_t *lock, - char *name, - Eterm extra); ERTS_GLB_INLINE void erts_smp_spinlock_init(erts_smp_spinlock_t *lock, - char *name); + char *name, + Eterm extra, + erts_lock_flags_t flags); ERTS_GLB_INLINE void erts_smp_spinlock_destroy(erts_smp_spinlock_t *lock); ERTS_GLB_INLINE void erts_smp_spin_unlock(erts_smp_spinlock_t *lock); #ifdef ERTS_ENABLE_LOCK_POSITION @@ -194,11 +190,10 @@ ERTS_GLB_INLINE void erts_smp_spin_lock_x(erts_smp_spinlock_t *lock, char *file, ERTS_GLB_INLINE void erts_smp_spin_lock(erts_smp_spinlock_t *lock); #endif ERTS_GLB_INLINE int erts_smp_lc_spinlock_is_locked(erts_smp_spinlock_t *lock); -ERTS_GLB_INLINE void erts_smp_rwlock_init_x(erts_smp_rwlock_t *lock, - char *name, - Eterm extra); ERTS_GLB_INLINE void erts_smp_rwlock_init(erts_smp_rwlock_t *lock, - char *name); + char *name, + Eterm extra, + erts_lock_flags_t flags); ERTS_GLB_INLINE void erts_smp_rwlock_destroy(erts_smp_rwlock_t *lock); ERTS_GLB_INLINE void erts_smp_read_unlock(erts_smp_rwlock_t *lock); #ifdef ERTS_ENABLE_LOCK_POSITION @@ -1062,34 +1057,18 @@ erts_smp_rec_mtx_init(erts_smp_mtx_t *mtx) #endif ERTS_GLB_INLINE void -erts_smp_mtx_init_x(erts_smp_mtx_t *mtx, char *name, Eterm extra) +erts_smp_mtx_init(erts_smp_mtx_t *mtx, char *name, Eterm extra, erts_lock_flags_t flags) { #ifdef ERTS_SMP - erts_mtx_init_x(mtx, name, extra); + erts_mtx_init(mtx, name, extra, flags); #endif } ERTS_GLB_INLINE void -erts_smp_mtx_init_locked_x(erts_smp_mtx_t *mtx, char *name, Eterm extra) +erts_smp_mtx_init_locked(erts_smp_mtx_t *mtx, char *name, Eterm extra, erts_lock_flags_t flags) { #ifdef ERTS_SMP - erts_mtx_init_locked_x_opt(mtx, name, extra, 0); -#endif -} - -ERTS_GLB_INLINE void -erts_smp_mtx_init(erts_smp_mtx_t *mtx, char *name) -{ -#ifdef ERTS_SMP - erts_mtx_init(mtx, name); -#endif -} - -ERTS_GLB_INLINE void -erts_smp_mtx_init_locked(erts_smp_mtx_t *mtx, char *name) -{ -#ifdef ERTS_SMP - erts_mtx_init_locked(mtx, name); + erts_mtx_init_locked(mtx, name, extra, flags); #endif } @@ -1211,39 +1190,25 @@ erts_smp_rwmtx_set_reader_group(int no) } ERTS_GLB_INLINE void -erts_smp_rwmtx_init_opt_x(erts_smp_rwmtx_t *rwmtx, - erts_smp_rwmtx_opt_t *opt, - char *name, - Eterm extra) -{ -#ifdef ERTS_SMP - erts_rwmtx_init_opt_x(rwmtx, opt, name, extra); -#endif -} - -ERTS_GLB_INLINE void -erts_smp_rwmtx_init_x(erts_smp_rwmtx_t *rwmtx, char *name, Eterm extra) +erts_smp_rwmtx_init(erts_smp_rwmtx_t *rwmtx, + char *name, + Eterm extra, + erts_lock_flags_t flags) { #ifdef ERTS_SMP - erts_rwmtx_init_x(rwmtx, name, extra); + erts_smp_rwmtx_init_opt(rwmtx, NULL, name, extra, flags); #endif } ERTS_GLB_INLINE void erts_smp_rwmtx_init_opt(erts_smp_rwmtx_t *rwmtx, - erts_smp_rwmtx_opt_t *opt, - char *name) -{ -#ifdef ERTS_SMP - erts_rwmtx_init_opt(rwmtx, opt, name); -#endif -} - -ERTS_GLB_INLINE void -erts_smp_rwmtx_init(erts_smp_rwmtx_t *rwmtx, char *name) + erts_smp_rwmtx_opt_t *opt, + char *name, + Eterm extra, + erts_lock_flags_t flags) { #ifdef ERTS_SMP - erts_rwmtx_init(rwmtx, name); + erts_rwmtx_init_opt(rwmtx, opt, name, extra, flags); #endif } @@ -1379,20 +1344,10 @@ erts_smp_lc_rwmtx_is_rwlocked(erts_smp_rwmtx_t *mtx) } ERTS_GLB_INLINE void -erts_smp_spinlock_init_x(erts_smp_spinlock_t *lock, char *name, Eterm extra) -{ -#ifdef ERTS_SMP - erts_spinlock_init_x(lock, name, extra); -#else - (void)lock; -#endif -} - -ERTS_GLB_INLINE void -erts_smp_spinlock_init(erts_smp_spinlock_t *lock, char *name) +erts_smp_spinlock_init(erts_smp_spinlock_t *lock, char *name, Eterm extra, erts_lock_flags_t flags) { #ifdef ERTS_SMP - erts_spinlock_init(lock, name); + erts_spinlock_init(lock, name, extra, flags); #else (void)lock; #endif @@ -1445,20 +1400,10 @@ erts_smp_lc_spinlock_is_locked(erts_smp_spinlock_t *lock) } ERTS_GLB_INLINE void -erts_smp_rwlock_init_x(erts_smp_rwlock_t *lock, char *name, Eterm extra) -{ -#ifdef ERTS_SMP - erts_rwlock_init_x(lock, name, extra); -#else - (void)lock; -#endif -} - -ERTS_GLB_INLINE void -erts_smp_rwlock_init(erts_smp_rwlock_t *lock, char *name) +erts_smp_rwlock_init(erts_smp_rwlock_t *lock, char *name, Eterm extra, erts_lock_flags_t flags) { #ifdef ERTS_SMP - erts_rwlock_init(lock, name); + erts_rwlock_init(lock, name, extra, flags); #else (void)lock; #endif diff --git a/erts/emulator/beam/erl_thr_progress.c b/erts/emulator/beam/erl_thr_progress.c index 700ed90def..2a9f276e02 100644 --- a/erts/emulator/beam/erl_thr_progress.c +++ b/erts/emulator/beam/erl_thr_progress.c @@ -321,13 +321,23 @@ tmp_thr_prgr_data(ErtsSchedulerData *esdp) ErtsThrPrgrData *tpd = perhaps_thr_prgr_data(esdp); if (!tpd) { - /* - * We only allocate the part up to the wakeup_request field - * which is the first field only used by registered threads - */ - tpd = erts_alloc(ERTS_ALC_T_T_THR_PRGR_DATA, - offsetof(ErtsThrPrgrData, wakeup_request)); - init_tmp_thr_prgr_data(tpd); + /* + * We only allocate the part up to the wakeup_request field which is + * the first field only used by registered threads + */ + size_t alloc_size = offsetof(ErtsThrPrgrData, wakeup_request); + + /* We may land here as a result of unmanaged_delay being called from + * the lock counting module, which in turn might be called from within + * the allocator, so we use plain malloc to avoid deadlocks. */ + tpd = +#ifdef ERTS_ENABLE_LOCK_COUNT + malloc(alloc_size); +#else + erts_alloc(ERTS_ALC_T_T_THR_PRGR_DATA, alloc_size); +#endif + + init_tmp_thr_prgr_data(tpd); } return tpd; @@ -337,8 +347,13 @@ static ERTS_INLINE void return_tmp_thr_prgr_data(ErtsThrPrgrData *tpd) { if (tpd->is_temporary) { - erts_tsd_set(erts_thr_prgr_data_key__, NULL); - erts_free(ERTS_ALC_T_T_THR_PRGR_DATA, tpd); + erts_tsd_set(erts_thr_prgr_data_key__, NULL); + +#ifdef ERTS_ENABLE_LOCK_COUNT + free(tpd); +#else + erts_free(ERTS_ALC_T_T_THR_PRGR_DATA, tpd); +#endif } } diff --git a/erts/emulator/beam/erl_threads.h b/erts/emulator/beam/erl_threads.h index 9612b70469..8b5c17d739 100644 --- a/erts/emulator/beam/erl_threads.h +++ b/erts/emulator/beam/erl_threads.h @@ -259,13 +259,16 @@ #include "sys.h" +#include "erl_lock_flags.h" +#include "erl_term.h" + #ifdef USE_THREADS #define ETHR_TRY_INLINE_FUNCS #include "ethread.h" + #include "erl_lock_check.h" #include "erl_lock_count.h" -#include "erl_term.h" #if defined(__GLIBC__) && (__GLIBC__ << 16) + __GLIBC_MINOR__ < (2 << 16) + 4 /* @@ -307,9 +310,11 @@ typedef struct { erts_lc_lock_t lc; #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_lock_t lcnt; + erts_lcnt_ref_t lcnt; +#endif +#ifdef DEBUG + erts_lock_flags_t flags; #endif - } erts_mtx_t; typedef ethr_cond erts_cnd_t; @@ -320,7 +325,10 @@ typedef struct { erts_lc_lock_t lc; #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_lock_t lcnt; + erts_lcnt_ref_t lcnt; +#endif +#ifdef DEBUG + erts_lock_flags_t flags; #endif } erts_rwmtx_t; @@ -365,7 +373,10 @@ typedef struct { erts_lc_lock_t lc; #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_lock_t lcnt; + erts_lcnt_ref_t lcnt; +#endif +#ifdef DEBUG + erts_lock_flags_t flags; #endif } erts_spinlock_t; @@ -376,7 +387,10 @@ typedef struct { erts_lc_lock_t lc; #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_lock_t lcnt; + erts_lcnt_ref_t lcnt; +#endif +#ifdef DEBUG + erts_lock_flags_t flags; #endif } erts_rwlock_t; @@ -479,11 +493,14 @@ ERTS_GLB_INLINE void erts_thr_install_exit_handler(void (*exit_handler)(void)); ERTS_GLB_INLINE erts_tid_t erts_thr_self(void); ERTS_GLB_INLINE int erts_thr_getname(erts_tid_t tid, char *buf, size_t len); ERTS_GLB_INLINE int erts_equal_tids(erts_tid_t x, erts_tid_t y); -ERTS_GLB_INLINE void erts_mtx_init_x(erts_mtx_t *mtx, char *name, Eterm extra); -ERTS_GLB_INLINE void erts_mtx_init_x_opt(erts_mtx_t *mtx, char *name, Eterm extra, Uint16 opt); -ERTS_GLB_INLINE void erts_mtx_init_locked_x_opt(erts_mtx_t *mtx, char *name, Eterm extra, Uint16 opt); -ERTS_GLB_INLINE void erts_mtx_init(erts_mtx_t *mtx, char *name); -ERTS_GLB_INLINE void erts_mtx_init_locked(erts_mtx_t *mtx, char *name); +ERTS_GLB_INLINE void erts_mtx_init(erts_mtx_t *mtx, + char *name, + Eterm extra, + erts_lock_flags_t flags); +ERTS_GLB_INLINE void erts_mtx_init_locked(erts_mtx_t *mtx, + char *name, + Eterm extra, + erts_lock_flags_t flags); ERTS_GLB_INLINE void erts_mtx_destroy(erts_mtx_t *mtx); #ifdef ERTS_ENABLE_LOCK_POSITION ERTS_GLB_INLINE int erts_mtx_trylock_x(erts_mtx_t *mtx, char *file, @@ -502,18 +519,15 @@ ERTS_GLB_INLINE void erts_cnd_wait(erts_cnd_t *cnd, erts_mtx_t *mtx); ERTS_GLB_INLINE void erts_cnd_signal(erts_cnd_t *cnd); ERTS_GLB_INLINE void erts_cnd_broadcast(erts_cnd_t *cnd); ERTS_GLB_INLINE void erts_rwmtx_set_reader_group(int no); -ERTS_GLB_INLINE void erts_rwmtx_init_opt_x(erts_rwmtx_t *rwmtx, - erts_rwmtx_opt_t *opt, - char *name, - Eterm extra); -ERTS_GLB_INLINE void erts_rwmtx_init_x(erts_rwmtx_t *rwmtx, - char *name, - Eterm extra); ERTS_GLB_INLINE void erts_rwmtx_init_opt(erts_rwmtx_t *rwmtx, - erts_rwmtx_opt_t *opt, - char *name); + erts_rwmtx_opt_t *opt, + char *name, + Eterm extra, + erts_lock_flags_t flags); ERTS_GLB_INLINE void erts_rwmtx_init(erts_rwmtx_t *rwmtx, - char *name); + char *name, + Eterm extra, + erts_lock_flags_t flags); ERTS_GLB_INLINE void erts_rwmtx_destroy(erts_rwmtx_t *rwmtx); #ifdef ERTS_ENABLE_LOCK_POSITION ERTS_GLB_INLINE int erts_rwmtx_tryrlock_x(erts_rwmtx_t *rwmtx, char *file, unsigned int line); @@ -603,16 +617,10 @@ ERTS_GLB_INLINE erts_aint64_t erts_no_atomic64_cmpxchg(erts_no_atomic64_t *xchgp ERTS_GLB_INLINE erts_aint64_t erts_no_atomic64_read_bset(erts_no_atomic64_t *var, erts_aint64_t mask, erts_aint64_t set); - -ERTS_GLB_INLINE void erts_spinlock_init_x_opt(erts_spinlock_t *lock, - char *name, - Eterm extra, - Uint16 opt); -ERTS_GLB_INLINE void erts_spinlock_init_x(erts_spinlock_t *lock, - char *name, - Eterm extra); ERTS_GLB_INLINE void erts_spinlock_init(erts_spinlock_t *lock, - char *name); + char *name, + Eterm extra, + erts_lock_flags_t flags); ERTS_GLB_INLINE void erts_spinlock_destroy(erts_spinlock_t *lock); ERTS_GLB_INLINE void erts_spin_unlock(erts_spinlock_t *lock); #ifdef ERTS_ENABLE_LOCK_POSITION @@ -621,11 +629,10 @@ ERTS_GLB_INLINE void erts_spin_lock_x(erts_spinlock_t *lock, char *file, unsigne ERTS_GLB_INLINE void erts_spin_lock(erts_spinlock_t *lock); #endif ERTS_GLB_INLINE int erts_lc_spinlock_is_locked(erts_spinlock_t *lock); -ERTS_GLB_INLINE void erts_rwlock_init_x(erts_rwlock_t *lock, - char *name, - Eterm extra); ERTS_GLB_INLINE void erts_rwlock_init(erts_rwlock_t *lock, - char *name); + char *name, + Eterm extra, + erts_lock_flags_t flags); ERTS_GLB_INLINE void erts_rwlock_destroy(erts_rwlock_t *lock); ERTS_GLB_INLINE void erts_read_unlock(erts_rwlock_t *lock); #ifdef ERTS_ENABLE_LOCK_POSITION @@ -2159,97 +2166,41 @@ erts_equal_tids(erts_tid_t x, erts_tid_t y) } ERTS_GLB_INLINE void -erts_mtx_init_x(erts_mtx_t *mtx, char *name, Eterm extra) +erts_mtx_init(erts_mtx_t *mtx, char *name, Eterm extra, erts_lock_flags_t flags) { #ifdef USE_THREADS int res = ethr_mutex_init(&mtx->mtx); - if (res) - erts_thr_fatal_error(res, "initialize mutex"); -#ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_init_lock_x(&mtx->lc, name, ERTS_LC_FLG_LT_MUTEX, extra); -#endif -#ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_init_lock_x(&mtx->lcnt, name, ERTS_LCNT_LT_MUTEX, extra); -#endif -#endif -} + if (res) { + erts_thr_fatal_error(res, "initialize mutex"); + } -ERTS_GLB_INLINE void -erts_mtx_init_x_opt(erts_mtx_t *mtx, char *name, Eterm extra, Uint16 opt) -{ -#ifdef USE_THREADS - int res = ethr_mutex_init(&mtx->mtx); - if (res) - erts_thr_fatal_error(res, "initialize mutex"); -#ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_init_lock_x(&mtx->lc, name, ERTS_LC_FLG_LT_MUTEX, extra); -#endif -#ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_init_lock_x(&mtx->lcnt, name, ERTS_LCNT_LT_MUTEX | opt, extra); -#endif + flags |= ERTS_LOCK_TYPE_MUTEX; +#ifdef DEBUG + mtx->flags = flags; #endif -} - -ERTS_GLB_INLINE void -erts_mtx_init_locked_x_opt(erts_mtx_t *mtx, char *name, Eterm extra, Uint16 opt) -{ -#ifdef USE_THREADS - int res = ethr_mutex_init(&mtx->mtx); - if (res) - erts_thr_fatal_error(res, "initialize mutex"); -#ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_init_lock_x(&mtx->lc, name, ERTS_LC_FLG_LT_MUTEX, extra); -#endif -#ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_init_lock_x(&mtx->lcnt, name, ERTS_LCNT_LT_MUTEX | opt, extra); -#endif - ethr_mutex_lock(&mtx->mtx); #ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_trylock(1, &mtx->lc); + erts_lc_init_lock_x(&mtx->lc, name, flags, extra); #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_trylock(&mtx->lcnt, 1); -#endif + erts_lcnt_init_ref_x(&mtx->lcnt, name, extra, flags); #endif +#endif /* USE_THREADS */ } ERTS_GLB_INLINE void -erts_mtx_init(erts_mtx_t *mtx, char *name) +erts_mtx_init_locked(erts_mtx_t *mtx, char *name, Eterm extra, erts_lock_flags_t flags) { #ifdef USE_THREADS - int res = ethr_mutex_init(&mtx->mtx); - if (res) - erts_thr_fatal_error(res, "initialize mutex"); -#ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_init_lock(&mtx->lc, name, ERTS_LC_FLG_LT_MUTEX); -#endif -#ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_init_lock(&mtx->lcnt, name, ERTS_LCNT_LT_MUTEX); -#endif -#endif -} + erts_mtx_init(mtx, name, extra, flags); -ERTS_GLB_INLINE void -erts_mtx_init_locked(erts_mtx_t *mtx, char *name) -{ -#ifdef USE_THREADS - int res = ethr_mutex_init(&mtx->mtx); - if (res) - erts_thr_fatal_error(res, "initialize mutex"); -#ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_init_lock(&mtx->lc, name, ERTS_LC_FLG_LT_MUTEX); -#endif -#ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_init_lock(&mtx->lcnt, name, ERTS_LCNT_LT_MUTEX); -#endif ethr_mutex_lock(&mtx->mtx); -#ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_trylock(1, &mtx->lc); -#endif -#ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_trylock(&mtx->lcnt, 1); -#endif + #ifdef ERTS_ENABLE_LOCK_CHECK + erts_lc_trylock(1, &mtx->lc); + #endif + #ifdef ERTS_ENABLE_LOCK_COUNT + erts_lcnt_trylock(&mtx->lcnt, 1); + #endif #endif } @@ -2258,11 +2209,14 @@ erts_mtx_destroy(erts_mtx_t *mtx) { #ifdef USE_THREADS int res; + + ASSERT(!(mtx->flags & ERTS_LOCK_FLAGS_PROPERTY_STATIC)); + #ifdef ERTS_ENABLE_LOCK_CHECK erts_lc_destroy_lock(&mtx->lc); #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_destroy_lock(&mtx->lcnt); + erts_lcnt_uninstall(&mtx->lcnt); #endif res = ethr_mutex_destroy(&mtx->mtx); if (res != 0) { @@ -2359,7 +2313,8 @@ erts_lc_mtx_is_locked(erts_mtx_t *mtx) #if defined(USE_THREADS) && defined(ERTS_ENABLE_LOCK_CHECK) int res; erts_lc_lock_t lc = mtx->lc; - lc.flags = 0; + lc.flags = ERTS_LOCK_FLAGS_TYPE_MUTEX; + lc.taken_options = 0; erts_lc_have_locks(&res, &lc, 1); return res; #else @@ -2459,7 +2414,7 @@ erts_rwmtx_set_reader_group(int no) #ifdef USE_THREADS int res; #ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_check_no_locked_of_type(ERTS_LC_FLG_LT_RWMUTEX); + erts_lc_check_no_locked_of_type(ERTS_LOCK_TYPE_RWMUTEX); #endif res = ethr_rwmutex_set_reader_group(no); if (res != 0) @@ -2468,57 +2423,32 @@ erts_rwmtx_set_reader_group(int no) } ERTS_GLB_INLINE void -erts_rwmtx_init_opt_x(erts_rwmtx_t *rwmtx, - erts_rwmtx_opt_t *opt, - char *name, - Eterm extra) -{ +erts_rwmtx_init_opt(erts_rwmtx_t *rwmtx, erts_rwmtx_opt_t *opt, + char *name, Eterm extra, erts_lock_flags_t flags) { #ifdef USE_THREADS int res = ethr_rwmutex_init_opt(&rwmtx->rwmtx, opt); - if (res != 0) - erts_thr_fatal_error(res, "initialize rwmutex"); -#ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_init_lock_x(&rwmtx->lc, name, ERTS_LC_FLG_LT_RWMUTEX, extra); -#endif -#ifdef ERTS_ENABLE_LOCK_COUNT - if (name && name[0] == '\0') - erts_lcnt_init_lock_x(&rwmtx->lcnt, NULL, ERTS_LCNT_LT_RWMUTEX, extra); - else - erts_lcnt_init_lock_x(&rwmtx->lcnt, name, ERTS_LCNT_LT_RWMUTEX, extra); -#endif -#endif -} + if (res != 0) { + erts_thr_fatal_error(res, "initialize rwmutex"); + } -ERTS_GLB_INLINE void -erts_rwmtx_init_x(erts_rwmtx_t *rwmtx, - char *name, - Eterm extra) -{ - erts_rwmtx_init_opt_x(rwmtx, NULL, name, extra); -} + flags |= ERTS_LOCK_TYPE_RWMUTEX; +#ifdef DEBUG + rwmtx->flags = flags; +#endif -ERTS_GLB_INLINE void -erts_rwmtx_init_opt(erts_rwmtx_t *rwmtx, - erts_rwmtx_opt_t *opt, - char *name) -{ -#ifdef USE_THREADS - int res = ethr_rwmutex_init_opt(&rwmtx->rwmtx, opt); - if (res != 0) - erts_thr_fatal_error(res, "initialize rwmutex"); #ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_init_lock(&rwmtx->lc, name, ERTS_LC_FLG_LT_RWMUTEX); + erts_lc_init_lock_x(&rwmtx->lc, name, flags, extra); #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_init_lock(&rwmtx->lcnt, name, ERTS_LCNT_LT_RWMUTEX); -#endif + erts_lcnt_init_ref_x(&rwmtx->lcnt, name, extra, flags); #endif +#endif /* USE_THREADS */ } ERTS_GLB_INLINE void -erts_rwmtx_init(erts_rwmtx_t *rwmtx, char *name) -{ - erts_rwmtx_init_opt(rwmtx, NULL, name); +erts_rwmtx_init(erts_rwmtx_t *rwmtx, char *name, Eterm extra, + erts_lock_flags_t flags) { + erts_rwmtx_init_opt(rwmtx, NULL, name, extra, flags); } ERTS_GLB_INLINE void @@ -2526,11 +2456,14 @@ erts_rwmtx_destroy(erts_rwmtx_t *rwmtx) { #ifdef USE_THREADS int res; + + ASSERT(!(rwmtx->flags & ERTS_LOCK_FLAGS_PROPERTY_STATIC)); + #ifdef ERTS_ENABLE_LOCK_CHECK erts_lc_destroy_lock(&rwmtx->lc); #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_destroy_lock(&rwmtx->lcnt); + erts_lcnt_uninstall(&rwmtx->lcnt); #endif res = ethr_rwmutex_destroy(&rwmtx->rwmtx); if (res != 0) { @@ -2558,7 +2491,7 @@ erts_rwmtx_tryrlock(erts_rwmtx_t *rwmtx) int res; #ifdef ERTS_ENABLE_LOCK_CHECK - if (erts_lc_trylock_force_busy_flg(&rwmtx->lc, ERTS_LC_FLG_LO_READ)) + if (erts_lc_trylock_force_busy_flg(&rwmtx->lc, ERTS_LOCK_OPTIONS_READ)) return EBUSY; /* Make sure caller can handle the situation without causing a lock order violation */ #endif @@ -2567,13 +2500,13 @@ erts_rwmtx_tryrlock(erts_rwmtx_t *rwmtx) #ifdef ERTS_ENABLE_LOCK_CHECK #ifdef ERTS_ENABLE_LOCK_POSITION - erts_lc_trylock_flg_x(res == 0, &rwmtx->lc, ERTS_LC_FLG_LO_READ,file,line); + erts_lc_trylock_flg_x(res == 0, &rwmtx->lc, ERTS_LOCK_OPTIONS_READ,file,line); #else - erts_lc_trylock_flg(res == 0, &rwmtx->lc, ERTS_LC_FLG_LO_READ); + erts_lc_trylock_flg(res == 0, &rwmtx->lc, ERTS_LOCK_OPTIONS_READ); #endif #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_trylock_opt(&rwmtx->lcnt, res, ERTS_LCNT_LO_READ); + erts_lcnt_trylock_opt(&rwmtx->lcnt, res, ERTS_LOCK_OPTIONS_READ); #endif return res; @@ -2592,13 +2525,13 @@ erts_rwmtx_rlock(erts_rwmtx_t *rwmtx) #ifdef USE_THREADS #ifdef ERTS_ENABLE_LOCK_CHECK #ifdef ERTS_ENABLE_LOCK_POSITION - erts_lc_lock_flg_x(&rwmtx->lc, ERTS_LC_FLG_LO_READ,file,line); + erts_lc_lock_flg_x(&rwmtx->lc, ERTS_LOCK_OPTIONS_READ,file,line); #else - erts_lc_lock_flg(&rwmtx->lc, ERTS_LC_FLG_LO_READ); + erts_lc_lock_flg(&rwmtx->lc, ERTS_LOCK_OPTIONS_READ); #endif #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_lock_opt(&rwmtx->lcnt, ERTS_LCNT_LO_READ); + erts_lcnt_lock_opt(&rwmtx->lcnt, ERTS_LOCK_OPTIONS_READ); #endif ethr_rwmutex_rlock(&rwmtx->rwmtx); #ifdef ERTS_ENABLE_LOCK_COUNT @@ -2612,10 +2545,10 @@ erts_rwmtx_runlock(erts_rwmtx_t *rwmtx) { #ifdef USE_THREADS #ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_unlock_flg(&rwmtx->lc, ERTS_LC_FLG_LO_READ); + erts_lc_unlock_flg(&rwmtx->lc, ERTS_LOCK_OPTIONS_READ); #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_unlock_opt(&rwmtx->lcnt, ERTS_LCNT_LO_READ); + erts_lcnt_unlock_opt(&rwmtx->lcnt, ERTS_LOCK_OPTIONS_READ); #endif ethr_rwmutex_runlock(&rwmtx->rwmtx); #endif @@ -2633,7 +2566,7 @@ erts_rwmtx_tryrwlock(erts_rwmtx_t *rwmtx) int res; #ifdef ERTS_ENABLE_LOCK_CHECK - if (erts_lc_trylock_force_busy_flg(&rwmtx->lc, ERTS_LC_FLG_LO_READ_WRITE)) + if (erts_lc_trylock_force_busy_flg(&rwmtx->lc, ERTS_LOCK_OPTIONS_RDWR)) return EBUSY; /* Make sure caller can handle the situation without causing a lock order violation */ #endif @@ -2642,13 +2575,13 @@ erts_rwmtx_tryrwlock(erts_rwmtx_t *rwmtx) #ifdef ERTS_ENABLE_LOCK_CHECK #ifdef ERTS_ENABLE_LOCK_POSITION - erts_lc_trylock_flg_x(res == 0, &rwmtx->lc, ERTS_LC_FLG_LO_READ_WRITE,file,line); + erts_lc_trylock_flg_x(res == 0, &rwmtx->lc, ERTS_LOCK_OPTIONS_RDWR,file,line); #else - erts_lc_trylock_flg(res == 0, &rwmtx->lc, ERTS_LC_FLG_LO_READ_WRITE); + erts_lc_trylock_flg(res == 0, &rwmtx->lc, ERTS_LOCK_OPTIONS_RDWR); #endif #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_trylock_opt(&rwmtx->lcnt, res, ERTS_LCNT_LO_READ_WRITE); + erts_lcnt_trylock_opt(&rwmtx->lcnt, res, ERTS_LOCK_OPTIONS_RDWR); #endif return res; @@ -2667,13 +2600,13 @@ erts_rwmtx_rwlock(erts_rwmtx_t *rwmtx) #ifdef USE_THREADS #ifdef ERTS_ENABLE_LOCK_CHECK #ifdef ERTS_ENABLE_LOCK_POSITION - erts_lc_lock_flg_x(&rwmtx->lc, ERTS_LC_FLG_LO_READ_WRITE,file,line); + erts_lc_lock_flg_x(&rwmtx->lc, ERTS_LOCK_OPTIONS_RDWR,file,line); #else - erts_lc_lock_flg(&rwmtx->lc, ERTS_LC_FLG_LO_READ_WRITE); + erts_lc_lock_flg(&rwmtx->lc, ERTS_LOCK_OPTIONS_RDWR); #endif #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_lock_opt(&rwmtx->lcnt, ERTS_LCNT_LO_READ_WRITE); + erts_lcnt_lock_opt(&rwmtx->lcnt, ERTS_LOCK_OPTIONS_RDWR); #endif ethr_rwmutex_rwlock(&rwmtx->rwmtx); #ifdef ERTS_ENABLE_LOCK_COUNT @@ -2687,10 +2620,10 @@ erts_rwmtx_rwunlock(erts_rwmtx_t *rwmtx) { #ifdef USE_THREADS #ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_unlock_flg(&rwmtx->lc, ERTS_LC_FLG_LO_READ_WRITE); + erts_lc_unlock_flg(&rwmtx->lc, ERTS_LOCK_OPTIONS_RDWR); #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_unlock_opt(&rwmtx->lcnt, ERTS_LCNT_LO_READ_WRITE); + erts_lcnt_unlock_opt(&rwmtx->lcnt, ERTS_LOCK_OPTIONS_RDWR); #endif ethr_rwmutex_rwunlock(&rwmtx->rwmtx); #endif @@ -2728,7 +2661,8 @@ erts_lc_rwmtx_is_rlocked(erts_rwmtx_t *mtx) #if defined(USE_THREADS) && defined(ERTS_ENABLE_LOCK_CHECK) int res; erts_lc_lock_t lc = mtx->lc; - lc.flags = ERTS_LC_FLG_LO_READ; + lc.flags = ERTS_LOCK_TYPE_RWMUTEX; + lc.taken_options = ERTS_LOCK_OPTIONS_READ; erts_lc_have_locks(&res, &lc, 1); return res; #else @@ -2742,7 +2676,8 @@ erts_lc_rwmtx_is_rwlocked(erts_rwmtx_t *mtx) #if defined(USE_THREADS) && defined(ERTS_ENABLE_LOCK_CHECK) int res; erts_lc_lock_t lc = mtx->lc; - lc.flags = ERTS_LC_FLG_LO_READ|ERTS_LC_FLG_LO_WRITE; + lc.flags = ERTS_LOCK_TYPE_RWMUTEX; + lc.taken_options = ERTS_LOCK_OPTIONS_RDWR; erts_lc_have_locks(&res, &lc, 1); return res; #else @@ -3075,59 +3010,26 @@ erts_no_atomic64_read_bset(erts_no_atomic64_t *var, /* spinlock */ ERTS_GLB_INLINE void -erts_spinlock_init_x(erts_spinlock_t *lock, char *name, Eterm extra) +erts_spinlock_init(erts_spinlock_t *lock, char *name, Eterm extra, erts_lock_flags_t flags) { #ifdef USE_THREADS int res = ethr_spinlock_init(&lock->slck); - if (res) - erts_thr_fatal_error(res, "init spinlock"); -#ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_init_lock_x(&lock->lc, name, ERTS_LC_FLG_LT_SPINLOCK, extra); -#endif -#ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_init_lock_x(&lock->lcnt, name, ERTS_LCNT_LT_SPINLOCK, extra); -#endif -#else - (void)lock; -#endif -} + if (res) { + erts_thr_fatal_error(res, "init spinlock"); + } -ERTS_GLB_INLINE void -erts_spinlock_init_x_opt(erts_spinlock_t *lock, char *name, Eterm extra, - Uint16 opt) -{ -#ifdef USE_THREADS - int res = ethr_spinlock_init(&lock->slck); - if (res) - erts_thr_fatal_error(res, "init spinlock"); -#ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_init_lock_x(&lock->lc, name, ERTS_LC_FLG_LT_SPINLOCK, extra); -#endif -#ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_init_lock_x(&lock->lcnt, name, ERTS_LCNT_LT_SPINLOCK|opt, extra); + flags |= ERTS_LOCK_TYPE_SPINLOCK; +#ifdef DEBUG + lock->flags = flags; #endif -#else - (void)lock; -#endif -} - -ERTS_GLB_INLINE void -erts_spinlock_init(erts_spinlock_t *lock, char *name) -{ -#ifdef USE_THREADS - int res = ethr_spinlock_init(&lock->slck); - if (res) - erts_thr_fatal_error(res, "init spinlock"); #ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_init_lock(&lock->lc, name, ERTS_LC_FLG_LT_SPINLOCK); + erts_lc_init_lock_x(&lock->lc, name, flags, extra); #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_init_lock(&lock->lcnt, name, ERTS_LCNT_LT_SPINLOCK); -#endif -#else - (void)lock; + erts_lcnt_init_ref_x(&lock->lcnt, name, extra, flags); #endif +#endif /* USE_THREADS */ } ERTS_GLB_INLINE void @@ -3135,11 +3037,14 @@ erts_spinlock_destroy(erts_spinlock_t *lock) { #ifdef USE_THREADS int res; + + ASSERT(!(lock->flags & ERTS_LOCK_FLAGS_PROPERTY_STATIC)); + #ifdef ERTS_ENABLE_LOCK_CHECK erts_lc_destroy_lock(&lock->lc); #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_destroy_lock(&lock->lcnt); + erts_lcnt_uninstall(&lock->lcnt); #endif res = ethr_spinlock_destroy(&lock->slck); if (res != 0) { @@ -3207,7 +3112,8 @@ erts_lc_spinlock_is_locked(erts_spinlock_t *lock) #if defined(USE_THREADS) && defined(ERTS_ENABLE_LOCK_CHECK) int res; erts_lc_lock_t lc = lock->lc; - lc.flags = 0; + lc.flags = ERTS_LOCK_TYPE_SPINLOCK; + lc.taken_options = 0; erts_lc_have_locks(&res, &lc, 1); return res; #else @@ -3218,39 +3124,26 @@ erts_lc_spinlock_is_locked(erts_spinlock_t *lock) /* rwspinlock */ ERTS_GLB_INLINE void -erts_rwlock_init_x(erts_rwlock_t *lock, char *name, Eterm extra) +erts_rwlock_init(erts_rwlock_t *lock, char *name, Eterm extra, erts_lock_flags_t flags) { #ifdef USE_THREADS int res = ethr_rwlock_init(&lock->rwlck); - if (res) - erts_thr_fatal_error(res, "init rwlock"); -#ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_init_lock_x(&lock->lc, name, ERTS_LC_FLG_LT_RWSPINLOCK, extra); -#endif -#ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_init_lock_x(&lock->lcnt, name, ERTS_LCNT_LT_RWSPINLOCK, extra); -#endif -#else - (void)lock; + if (res) { + erts_thr_fatal_error(res, "init rwlock"); + } + + flags |= ERTS_LOCK_TYPE_RWSPINLOCK; +#ifdef DEBUG + lock->flags = flags; #endif -} -ERTS_GLB_INLINE void -erts_rwlock_init(erts_rwlock_t *lock, char *name) -{ -#ifdef USE_THREADS - int res = ethr_rwlock_init(&lock->rwlck); - if (res) - erts_thr_fatal_error(res, "init rwlock"); #ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_init_lock(&lock->lc, name, ERTS_LC_FLG_LT_RWSPINLOCK); + erts_lc_init_lock_x(&lock->lc, name, flags, extra); #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_init_lock(&lock->lcnt, name, ERTS_LCNT_LT_RWSPINLOCK); -#endif -#else - (void)lock; + erts_lcnt_init_ref_x(&lock->lcnt, name, extra, flags); #endif +#endif /* USE_THREADS */ } ERTS_GLB_INLINE void @@ -3258,11 +3151,14 @@ erts_rwlock_destroy(erts_rwlock_t *lock) { #ifdef USE_THREADS int res; + + ASSERT(!(lock->flags & ERTS_LOCK_FLAGS_PROPERTY_STATIC)); + #ifdef ERTS_ENABLE_LOCK_CHECK erts_lc_destroy_lock(&lock->lc); #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_destroy_lock(&lock->lcnt); + erts_lcnt_uninstall(&lock->lcnt); #endif res = ethr_rwlock_destroy(&lock->rwlck); if (res != 0) { @@ -3286,10 +3182,10 @@ erts_read_unlock(erts_rwlock_t *lock) { #ifdef USE_THREADS #ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_unlock_flg(&lock->lc, ERTS_LC_FLG_LO_READ); + erts_lc_unlock_flg(&lock->lc, ERTS_LOCK_OPTIONS_READ); #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_unlock_opt(&lock->lcnt, ERTS_LCNT_LO_READ); + erts_lcnt_unlock_opt(&lock->lcnt, ERTS_LOCK_OPTIONS_READ); #endif ethr_read_unlock(&lock->rwlck); #else @@ -3307,13 +3203,13 @@ erts_read_lock(erts_rwlock_t *lock) #ifdef USE_THREADS #ifdef ERTS_ENABLE_LOCK_CHECK #ifdef ERTS_ENABLE_LOCK_POSITION - erts_lc_lock_flg_x(&lock->lc, ERTS_LC_FLG_LO_READ,file,line); + erts_lc_lock_flg_x(&lock->lc, ERTS_LOCK_OPTIONS_READ,file,line); #else - erts_lc_lock_flg(&lock->lc, ERTS_LC_FLG_LO_READ); + erts_lc_lock_flg(&lock->lc, ERTS_LOCK_OPTIONS_READ); #endif #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_lock_opt(&lock->lcnt, ERTS_LCNT_LO_READ); + erts_lcnt_lock_opt(&lock->lcnt, ERTS_LOCK_OPTIONS_READ); #endif ethr_read_lock(&lock->rwlck); #ifdef ERTS_ENABLE_LOCK_COUNT @@ -3329,10 +3225,10 @@ erts_write_unlock(erts_rwlock_t *lock) { #ifdef USE_THREADS #ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_unlock_flg(&lock->lc, ERTS_LC_FLG_LO_READ_WRITE); + erts_lc_unlock_flg(&lock->lc, ERTS_LOCK_OPTIONS_RDWR); #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_unlock_opt(&lock->lcnt, ERTS_LCNT_LO_READ_WRITE); + erts_lcnt_unlock_opt(&lock->lcnt, ERTS_LOCK_OPTIONS_RDWR); #endif ethr_write_unlock(&lock->rwlck); #else @@ -3350,13 +3246,13 @@ erts_write_lock(erts_rwlock_t *lock) #ifdef USE_THREADS #ifdef ERTS_ENABLE_LOCK_CHECK #ifdef ERTS_ENABLE_LOCK_POSITION - erts_lc_lock_flg_x(&lock->lc, ERTS_LC_FLG_LO_READ_WRITE,file,line); + erts_lc_lock_flg_x(&lock->lc, ERTS_LOCK_OPTIONS_RDWR,file,line); #else - erts_lc_lock_flg(&lock->lc, ERTS_LC_FLG_LO_READ_WRITE); + erts_lc_lock_flg(&lock->lc, ERTS_LOCK_OPTIONS_RDWR); #endif #endif #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_lock_opt(&lock->lcnt, ERTS_LCNT_LO_READ_WRITE); + erts_lcnt_lock_opt(&lock->lcnt, ERTS_LOCK_OPTIONS_RDWR); #endif ethr_write_lock(&lock->rwlck); #ifdef ERTS_ENABLE_LOCK_COUNT @@ -3373,7 +3269,8 @@ erts_lc_rwlock_is_rlocked(erts_rwlock_t *lock) #if defined(USE_THREADS) && defined(ERTS_ENABLE_LOCK_CHECK) int res; erts_lc_lock_t lc = lock->lc; - lc.flags = ERTS_LC_FLG_LO_READ; + lc.flags = ERTS_LOCK_TYPE_RWSPINLOCK; + lc.taken_options = ERTS_LOCK_OPTIONS_READ; erts_lc_have_locks(&res, &lc, 1); return res; #else @@ -3387,7 +3284,8 @@ erts_lc_rwlock_is_rwlocked(erts_rwlock_t *lock) #if defined(USE_THREADS) && defined(ERTS_ENABLE_LOCK_CHECK) int res; erts_lc_lock_t lc = lock->lc; - lc.flags = ERTS_LC_FLG_LO_READ|ERTS_LC_FLG_LO_WRITE; + lc.flags = ERTS_LOCK_TYPE_RWSPINLOCK; + lc.taken_options = ERTS_LOCK_OPTIONS_RDWR; erts_lc_have_locks(&res, &lc, 1); return res; #else diff --git a/erts/emulator/beam/erl_time_sup.c b/erts/emulator/beam/erl_time_sup.c index 0421adb409..f6bb52dde1 100644 --- a/erts/emulator/beam/erl_time_sup.c +++ b/erts/emulator/beam/erl_time_sup.c @@ -954,8 +954,10 @@ erts_init_time_sup(int time_correction, ErtsTimeWarpMode time_warp_mode) ASSERT(ERTS_MONOTONIC_TIME_MIN < ERTS_MONOTONIC_TIME_MAX); - erts_smp_mtx_init(&erts_timeofday_mtx, "timeofday"); - erts_smp_mtx_init(&erts_get_time_mtx, "get_time"); + erts_smp_mtx_init(&erts_timeofday_mtx, "timeofday", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); + erts_smp_mtx_init(&erts_get_time_mtx, "get_time", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); time_sup.r.o.correction = time_correction; time_sup.r.o.warp_mode = time_warp_mode; @@ -1120,8 +1122,9 @@ erts_init_time_sup(int time_correction, ErtsTimeWarpMode time_warp_mode) rwmtx_opts.type = ERTS_SMP_RWMTX_TYPE_EXTREMELY_FREQUENT_READ; rwmtx_opts.lived = ERTS_SMP_RWMTX_LONG_LIVED; - erts_smp_rwmtx_init_opt(&time_sup.inf.c.parmon.rwmtx, - &rwmtx_opts, "get_corrected_time"); + erts_smp_rwmtx_init_opt(&time_sup.inf.c.parmon.rwmtx, &rwmtx_opts, + "get_corrected_time", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); cdatap = &time_sup.inf.c.parmon.cdata; diff --git a/erts/emulator/beam/erl_trace.c b/erts/emulator/beam/erl_trace.c index 4b06c55770..db7d0ac449 100644 --- a/erts/emulator/beam/erl_trace.c +++ b/erts/emulator/beam/erl_trace.c @@ -336,7 +336,8 @@ void erts_init_trace(void) { rwmtx_opts.type = ERTS_SMP_RWMTX_TYPE_EXTREMELY_FREQUENT_READ; rwmtx_opts.lived = ERTS_SMP_RWMTX_LONG_LIVED; - erts_smp_rwmtx_init_opt(&sys_trace_rwmtx, &rwmtx_opts, "sys_tracers"); + erts_smp_rwmtx_init_opt(&sys_trace_rwmtx, &rwmtx_opts, "sys_tracers", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DEBUG); #ifdef HAVE_ERTS_NOW_CPU erts_cpu_timestamp = 0; @@ -2625,7 +2626,8 @@ init_sys_msg_dispatcher(void) sys_message_queue = NULL; sys_message_queue_end = NULL; erts_smp_cnd_init(&smq_cnd); - erts_smp_mtx_init(&smq_mtx, "sys_msg_q"); + erts_smp_mtx_init(&smq_mtx, "sys_msg_q", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DEBUG); erts_smp_thr_create(&sys_msg_dispatcher_tid, sys_msg_dispatcher_func, NULL, @@ -3185,7 +3187,9 @@ static void init_tracer_nif() erts_smp_rwmtx_opt_t rwmtx_opt = ERTS_SMP_RWMTX_OPT_DEFAULT_INITER; rwmtx_opt.type = ERTS_SMP_RWMTX_TYPE_EXTREMELY_FREQUENT_READ; rwmtx_opt.lived = ERTS_SMP_RWMTX_LONG_LIVED; - erts_smp_rwmtx_init_opt(&tracer_mtx, &rwmtx_opt, "tracer_mtx"); + + erts_smp_rwmtx_init_opt(&tracer_mtx, &rwmtx_opt, "tracer_mtx", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DEBUG); erts_tracer_nif_clear(); diff --git a/erts/emulator/beam/export.c b/erts/emulator/beam/export.c index 57f5ba5436..828c833ffc 100644 --- a/erts/emulator/beam/export.c +++ b/erts/emulator/beam/export.c @@ -182,7 +182,8 @@ init_export_table(void) HashFunctions f; int i; - erts_smp_mtx_init(&export_staging_lock, "export_tab"); + erts_smp_mtx_init(&export_staging_lock, "export_tab", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); erts_smp_atomic_init_nob(&total_entries_bytes, 0); f.hash = (H_FUN) export_hash; diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h index fc95535ec3..2105ee7a6c 100644 --- a/erts/emulator/beam/global.h +++ b/erts/emulator/beam/global.h @@ -1183,7 +1183,8 @@ void erts_ref_to_driver_monitor(Eterm ref, ErlDrvMonitor *mon); Eterm erts_driver_monitor_to_ref(Eterm* hp, const ErlDrvMonitor *mon); #if defined(ERTS_SMP) && defined(ERTS_ENABLE_LOCK_COUNT) -void erts_lcnt_enable_io_lock_count(int enable); +void erts_lcnt_update_driver_locks(int enable); +void erts_lcnt_update_port_locks(int enable); #endif /* driver_tab.c */ diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c index 75545df80a..b609f6de39 100644 --- a/erts/emulator/beam/io.c +++ b/erts/emulator/beam/io.c @@ -258,14 +258,7 @@ static ERTS_INLINE void port_init_instr(Port *prt #ifdef ERTS_SMP ASSERT(prt->drv_ptr && prt->lock); if (!prt->drv_ptr->lock) { - char *lock_str = "port_lock"; -#ifdef ERTS_ENABLE_LOCK_COUNT - Uint16 opt = ((erts_lcnt_rt_options & ERTS_LCNT_OPT_PORTLOCK) - ? 0 : ERTS_LCNT_LT_DISABLE); -#else - Uint16 opt = 0; -#endif - erts_mtx_init_locked_x_opt(prt->lock, lock_str, id, opt); + erts_mtx_init_locked(prt->lock, "port_lock", id, ERTS_LOCK_FLAGS_CATEGORY_IO); } #endif erts_port_task_init_sched(&prt->sched, id); @@ -3399,9 +3392,8 @@ void erts_init_io(int port_tab_size, else if (port_tab_size < ERTS_MIN_PORTS) port_tab_size = ERTS_MIN_PORTS; - erts_smp_rwmtx_init_opt(&erts_driver_list_lock, - &drv_list_rwmtx_opts, - "driver_list"); + erts_smp_rwmtx_init_opt(&erts_driver_list_lock, &drv_list_rwmtx_opts, "driver_list", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_IO); driver_list = NULL; erts_smp_tsd_key_create(&driver_list_lock_status_key, "erts_driver_list_lock_status_key"); @@ -3438,67 +3430,94 @@ void erts_init_io(int port_tab_size, } #if defined(ERTS_ENABLE_LOCK_COUNT) && defined(ERTS_SMP) -static ERTS_INLINE void lcnt_enable_drv_lock_count(erts_driver_t *dp, int enable) +static void lcnt_enable_driver_lock_count(erts_driver_t *dp, int enable) { if (dp->lock) { - if (enable) - erts_lcnt_init_lock_x(&dp->lock->lcnt, - "driver_lock", - ERTS_LCNT_LT_MUTEX, - erts_atom_put((byte*)dp->name, - sys_strlen(dp->name), - ERTS_ATOM_ENC_LATIN1, - 1)); - - else - erts_lcnt_destroy_lock(&dp->lock->lcnt); + if (enable) { + Eterm name_as_atom = erts_atom_put((byte*)dp->name, sys_strlen(dp->name), + ERTS_ATOM_ENC_LATIN1, 1); + erts_lcnt_install_new_lock_info(&dp->lock->lcnt, "driver_lock", name_as_atom, + ERTS_LOCK_TYPE_MUTEX | ERTS_LOCK_FLAGS_CATEGORY_IO); + } else { + erts_lcnt_uninstall(&dp->lock->lcnt); + } } } -static ERTS_INLINE void lcnt_enable_port_lock_count(Port *prt, int enable) +static void lcnt_enable_port_lock_count(Port *prt, int enable) { erts_aint32_t state = erts_atomic32_read_nob(&prt->state); - if (!enable) { - erts_lcnt_destroy_lock(&prt->sched.mtx.lcnt); - if (state & ERTS_PORT_SFLG_PORT_SPECIFIC_LOCK) - erts_lcnt_destroy_lock(&prt->lock->lcnt); + + if(enable) { + ErlDrvPDL pdl = prt->port_data_lock; + + erts_lcnt_install_new_lock_info(&prt->sched.mtx.lcnt, "port_sched_lock", + prt->common.id, ERTS_LOCK_TYPE_MUTEX | ERTS_LOCK_FLAGS_CATEGORY_IO); + + if(pdl) { + erts_lcnt_install_new_lock_info(&pdl->mtx.lcnt, "port_data_lock", + prt->common.id, ERTS_LOCK_TYPE_MUTEX | ERTS_LOCK_FLAGS_CATEGORY_IO); + } + + if(state & ERTS_PORT_SFLG_PORT_SPECIFIC_LOCK) { + erts_lcnt_install_new_lock_info(&prt->lock->lcnt, "port_lock", + prt->common.id, ERTS_LOCK_TYPE_MUTEX | ERTS_LOCK_FLAGS_CATEGORY_IO); + } + } else { + erts_lcnt_uninstall(&prt->sched.mtx.lcnt); + + if(prt->port_data_lock) { + erts_lcnt_uninstall(&prt->port_data_lock->mtx.lcnt); + } + + if(state & ERTS_PORT_SFLG_PORT_SPECIFIC_LOCK) { + erts_lcnt_uninstall(&prt->lock->lcnt); + } } - else { - erts_lcnt_init_lock_x(&prt->sched.mtx.lcnt, - "port_sched_lock", - ERTS_LCNT_LT_MUTEX, - prt->common.id); - if (state & ERTS_PORT_SFLG_PORT_SPECIFIC_LOCK) - erts_lcnt_init_lock_x(&prt->lock->lcnt, - "port_lock", - ERTS_LCNT_LT_MUTEX, - prt->common.id); +} + +void erts_lcnt_update_driver_locks(int enable) { + erts_driver_t *driver; + + lcnt_enable_driver_lock_count(&vanilla_driver, enable); + lcnt_enable_driver_lock_count(&spawn_driver, enable); +#ifndef __WIN32__ + lcnt_enable_driver_lock_count(&forker_driver, enable); +#endif + lcnt_enable_driver_lock_count(&fd_driver, enable); + + erts_rwmtx_rlock(&erts_driver_list_lock); + + for (driver = driver_list; driver; driver = driver->next) { + lcnt_enable_driver_lock_count(driver, enable); } + + erts_rwmtx_runlock(&erts_driver_list_lock); } -void erts_lcnt_enable_io_lock_count(int enable) { - erts_driver_t *dp; - int ix, max = erts_ptab_max(&erts_port); - Port *prt; +void erts_lcnt_update_port_locks(int enable) { + int i, max; - for (ix = 0; ix < max; ix++) { - if ((prt = erts_pix2port(ix)) != NULL) { - lcnt_enable_port_lock_count(prt, enable); + max = erts_ptab_max(&erts_port); + + for(i = 0; i < max; i++) { + int delay_handle; + Port *port; + + delay_handle = erts_thr_progress_unmanaged_delay(); + port = erts_pix2port(i); + + if(port != NULL) { + lcnt_enable_port_lock_count(port, enable); } - } /* for all ports */ - lcnt_enable_drv_lock_count(&vanilla_driver, enable); - lcnt_enable_drv_lock_count(&spawn_driver, enable); -#ifndef __WIN32__ - lcnt_enable_drv_lock_count(&forker_driver, enable); -#endif - lcnt_enable_drv_lock_count(&fd_driver, enable); - /* enable lock counting in all drivers */ - for (dp = driver_list; dp; dp = dp->next) { - lcnt_enable_drv_lock_count(dp, enable); + if(delay_handle != ERTS_THR_PRGR_DHANDLE_MANAGED) { + erts_thr_progress_unmanaged_continue(delay_handle); + } } -} /* enable/disable lock counting of ports */ +} + #endif /* defined(ERTS_ENABLE_LOCK_COUNT) && defined(ERTS_SMP) */ /* * Buffering of data when using line oriented I/O on ports @@ -3681,7 +3700,7 @@ deliver_result(Port *prt, Eterm sender, Eterm pid, Eterm res) ERTS_SMP_CHK_NO_PROC_LOCKS; ASSERT(!prt || prt->common.id == sender); -#ifdef ERTS_SMP +#if defined(ERTS_SMP) && defined(ERTS_ENABLE_LOCK_CHECK) ASSERT(!prt || erts_lc_is_port_locked(prt)); #endif @@ -7071,7 +7090,7 @@ driver_pdl_create(ErlDrvPort dp) return NULL; pdl = erts_alloc(ERTS_ALC_T_PORT_DATA_LOCK, sizeof(struct erl_drv_port_data_lock)); - erts_mtx_init_x(&pdl->mtx, "port_data_lock", pp->common.id); + erts_mtx_init(&pdl->mtx, "port_data_lock", pp->common.id, ERTS_LOCK_FLAGS_CATEGORY_IO); pdl_init_refc(pdl); erts_port_inc_refc(pp); pdl->prt = pp; @@ -8238,22 +8257,16 @@ init_driver(erts_driver_t *drv, ErlDrvEntry *de, DE_Handle *handle) drv->flags = de->driver_flags; drv->handle = handle; #ifdef ERTS_SMP - if (drv->flags & ERL_DRV_FLAG_USE_PORT_LOCKING) - drv->lock = NULL; - else { - drv->lock = erts_alloc(ERTS_ALC_T_DRIVER_LOCK, - sizeof(erts_mtx_t)); - erts_mtx_init_x(drv->lock, - "driver_lock", -#if defined(ERTS_ENABLE_LOCK_CHECK) || defined(ERTS_ENABLE_LOCK_COUNT) - erts_atom_put((byte *) drv->name, - sys_strlen(drv->name), - ERTS_ATOM_ENC_LATIN1, - 1) -#else - NIL -#endif - ); + if (drv->flags & ERL_DRV_FLAG_USE_PORT_LOCKING) { + drv->lock = NULL; + } else { + Eterm driver_id = erts_atom_put((byte *) drv->name, + sys_strlen(drv->name), + ERTS_ATOM_ENC_LATIN1, 1); + + drv->lock = erts_alloc(ERTS_ALC_T_DRIVER_LOCK, sizeof(erts_mtx_t)); + + erts_mtx_init(drv->lock, "driver_lock", driver_id, ERTS_LOCK_FLAGS_CATEGORY_IO); } #endif drv->entry = de; diff --git a/erts/emulator/beam/module.c b/erts/emulator/beam/module.c index 8ab6c713d6..7987cb2eb5 100644 --- a/erts/emulator/beam/module.c +++ b/erts/emulator/beam/module.c @@ -120,7 +120,8 @@ void init_module_table(void) } for (i=0; i<ERTS_NUM_CODE_IX; i++) { - erts_smp_rwmtx_init_x(&the_old_code_rwlocks[i], "old_code", make_small(i)); + erts_smp_rwmtx_init(&the_old_code_rwlocks[i], "old_code", make_small(i), + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); } erts_smp_atomic_init_nob(&tot_module_bytes, 0); } diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab index cdf9cb58b9..44613c7d85 100644 --- a/erts/emulator/beam/ops.tab +++ b/erts/emulator/beam/ops.tab @@ -1174,9 +1174,9 @@ bs_get_binary2 Fail=f Ms=x Live=u Sz=sq Unit=u Flags=u Dst=d => \ %macro: i_bs_get_binary2 BsGetBinary_2 -fail_action %macro: i_bs_get_binary_all2 BsGetBinaryAll_2 -fail_action -i_bs_get_binary_imm2 f x I I I d -i_bs_get_binary2 f x I s I d -i_bs_get_binary_all2 f x I I d +i_bs_get_binary_imm2 f x I I I x +i_bs_get_binary2 f x I s I x +i_bs_get_binary_all2 f x I I x i_bs_get_binary_all_reuse x f I # Fetching float from binaries. @@ -1186,7 +1186,7 @@ bs_get_float2 Fail=f Ms=x Live=u Sz=s Unit=u Flags=u Dst=d => \ bs_get_float2 Fail=f Ms=x Live=u Sz=q Unit=u Flags=u Dst=d => jump Fail %macro: i_bs_get_float2 BsGetFloat2 -fail_action -i_bs_get_float2 f x I s I d +i_bs_get_float2 f x I s I x # Miscellanous diff --git a/erts/emulator/beam/register.c b/erts/emulator/beam/register.c index 7f60710124..bf3267cff1 100644 --- a/erts/emulator/beam/register.c +++ b/erts/emulator/beam/register.c @@ -145,7 +145,8 @@ void init_register_table(void) rwmtx_opt.type = ERTS_SMP_RWMTX_TYPE_FREQUENT_READ; rwmtx_opt.lived = ERTS_SMP_RWMTX_LONG_LIVED; - erts_smp_rwmtx_init_opt(®tab_rwmtx, &rwmtx_opt, "reg_tab"); + erts_smp_rwmtx_init_opt(®tab_rwmtx, &rwmtx_opt, "reg_tab", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); f.hash = (H_FUN) reg_hash; f.cmp = (HCMP_FUN) reg_cmp; diff --git a/erts/emulator/beam/safe_hash.c b/erts/emulator/beam/safe_hash.c index 30b26a7296..527c9efeca 100644 --- a/erts/emulator/beam/safe_hash.c +++ b/erts/emulator/beam/safe_hash.c @@ -155,7 +155,8 @@ int safe_hash_table_sz(SafeHash *h) ** Init a pre allocated or static hash structure ** and allocate buckets. NOT SAFE */ -SafeHash* safe_hash_init(ErtsAlcType_t type, SafeHash* h, char* name, int size, SafeHashFunctions fun) +SafeHash* safe_hash_init(ErtsAlcType_t type, SafeHash* h, char* name, erts_lock_flags_t flags, + int size, SafeHashFunctions fun) { int i, bytes; @@ -170,7 +171,8 @@ SafeHash* safe_hash_init(ErtsAlcType_t type, SafeHash* h, char* name, int size, erts_smp_atomic_init_nob(&h->is_rehashing, 0); erts_smp_atomic_init_nob(&h->nitems, 0); for (i=0; i<SAFE_HASH_LOCK_CNT; i++) { - erts_smp_mtx_init(&h->lock_vec[i].mtx,"safe_hash"); + erts_smp_mtx_init(&h->lock_vec[i].mtx, "safe_hash", NIL, + flags); } return h; } @@ -273,5 +275,22 @@ void safe_hash_for_each(SafeHash* h, void (*func)(void *, void *), void *func_ar } } +#ifdef ERTS_ENABLE_LOCK_COUNT +void erts_lcnt_enable_hash_lock_count(SafeHash *h, erts_lock_flags_t flags, int enable) { + int i; + + for(i = 0; i < SAFE_HASH_LOCK_CNT; i++) { + erts_smp_mtx_t *lock = &h->lock_vec[i].mtx; + + if(enable) { + erts_lcnt_install_new_lock_info(&lock->lcnt, "safe_hash", NIL, + ERTS_LOCK_TYPE_MUTEX | flags); + } else { + erts_lcnt_uninstall(&lock->lcnt); + } + } +} +#endif /* ERTS_ENABLE_LOCK_COUNT */ + #endif /* !ERTS_SYS_CONTINOUS_FD_NUMBERS */ diff --git a/erts/emulator/beam/safe_hash.h b/erts/emulator/beam/safe_hash.h index 285103cb17..dde48a6de8 100644 --- a/erts/emulator/beam/safe_hash.h +++ b/erts/emulator/beam/safe_hash.h @@ -28,6 +28,7 @@ #include "sys.h" #include "erl_alloc.h" +#include "erl_lock_flags.h" typedef unsigned long SafeHashValue; @@ -85,7 +86,7 @@ typedef struct /* A: Lockless atomics */ } SafeHash; -SafeHash* safe_hash_init(ErtsAlcType_t, SafeHash*, char*, int, SafeHashFunctions); +SafeHash* safe_hash_init(ErtsAlcType_t, SafeHash*, char*, erts_lock_flags_t, int, SafeHashFunctions); void safe_hash_get_info(SafeHashInfo*, SafeHash*); int safe_hash_table_sz(SafeHash *); @@ -96,5 +97,9 @@ void* safe_hash_erase(SafeHash*, void*); void safe_hash_for_each(SafeHash*, void (*func)(void *, void *), void *); +#ifdef ERTS_ENABLE_LOCK_COUNT +void erts_lcnt_enable_hash_lock_count(SafeHash*, erts_lock_flags_t, int); +#endif + #endif /* __SAFE_HASH_H__ */ diff --git a/erts/emulator/beam/utils.c b/erts/emulator/beam/utils.c index 457cada745..0fb25c2082 100644 --- a/erts/emulator/beam/utils.c +++ b/erts/emulator/beam/utils.c @@ -42,6 +42,7 @@ #include "dist.h" #include "erl_printf.h" #include "erl_threads.h" +#include "erl_lock_count.h" #include "erl_smp.h" #include "erl_time.h" #include "erl_thr_progress.h" diff --git a/erts/emulator/drivers/common/efile_drv.c b/erts/emulator/drivers/common/efile_drv.c index 1538191d67..3a7b3bb50c 100644 --- a/erts/emulator/drivers/common/efile_drv.c +++ b/erts/emulator/drivers/common/efile_drv.c @@ -742,7 +742,8 @@ file_init(void) efile_init(); #ifdef USE_VM_PROBES - erts_mtx_init(&dt_driver_mutex, "efile_drv dtrace mutex"); + erts_mtx_init(&dt_driver_mutex, "efile_drv dtrace mutex", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_IO); pthread_key_create(&dt_driver_key, NULL); #endif /* USE_VM_PROBES */ diff --git a/erts/emulator/hipe/hipe_bif0.c b/erts/emulator/hipe/hipe_bif0.c index 0225f17613..94bc563fda 100644 --- a/erts/emulator/hipe/hipe_bif0.c +++ b/erts/emulator/hipe/hipe_bif0.c @@ -1129,7 +1129,8 @@ struct hipe_ref { static inline void hipe_mfa_info_table_init_lock(void) { - erts_smp_rwmtx_init(&hipe_mfa_info_table.lock, "hipe_mfait_lock"); + erts_smp_rwmtx_init(&hipe_mfa_info_table.lock, "hipe_mfait_lock", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); } static inline void hipe_mfa_info_table_rlock(void) diff --git a/erts/emulator/sys/common/erl_check_io.c b/erts/emulator/sys/common/erl_check_io.c index ad580e7d52..799f67fc45 100644 --- a/erts/emulator/sys/common/erl_check_io.c +++ b/erts/emulator/sys/common/erl_check_io.c @@ -2564,24 +2564,22 @@ ERTS_CIO_EXPORT(erts_init_check_io)(void) #ifdef ERTS_SMP init_removed_fd_alloc(); pollset.removed_list = NULL; - erts_smp_spinlock_init(&pollset.removed_list_lock, - "pollset_rm_list"); + erts_smp_spinlock_init(&pollset.removed_list_lock, "pollset_rm_list", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_IO); { - int i; - for (i=0; i<DRV_EV_STATE_LOCK_CNT; i++) { -#ifdef ERTS_ENABLE_LOCK_COUNT - erts_smp_mtx_init_x(&drv_ev_state_locks[i].lck, "drv_ev_state", make_small(i)); -#else - erts_smp_mtx_init(&drv_ev_state_locks[i].lck, "drv_ev_state"); -#endif - } + int i; + for (i=0; i<DRV_EV_STATE_LOCK_CNT; i++) { + erts_smp_mtx_init(&drv_ev_state_locks[i].lck, "drv_ev_state", make_small(i), + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_IO); + } } #endif #ifdef ERTS_SYS_CONTINOUS_FD_NUMBERS max_fds = ERTS_CIO_POLL_MAX_FDS(); erts_smp_atomic_init_nob(&drv_ev_state_len, 0); drv_ev_state = NULL; - erts_smp_mtx_init(&drv_ev_state_grow_lock, "drv_ev_state_grow"); + erts_smp_mtx_init(&drv_ev_state_grow_lock, "drv_ev_state_grow", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_IO); #else { SafeHashFunctions hf; @@ -2591,10 +2589,11 @@ ERTS_CIO_EXPORT(erts_init_check_io)(void) hf.free = &drv_ev_state_free; num_state_prealloc = 0; state_prealloc_first = NULL; - erts_smp_spinlock_init(&state_prealloc_lock,"state_prealloc"); + erts_smp_spinlock_init(&state_prealloc_lock,"state_prealloc", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_IO); - safe_hash_init(ERTS_ALC_T_DRV_EV_STATE, &drv_ev_state_tab, "drv_ev_state_tab", - DRV_EV_STATE_HTAB_SIZE, hf); + safe_hash_init(ERTS_ALC_T_DRV_EV_STATE, &drv_ev_state_tab, "drv_ev_state_tab", + ERTS_LOCK_FLAGS_CATEGORY_IO, DRV_EV_STATE_HTAB_SIZE, hf); } #endif } @@ -3130,3 +3129,12 @@ ERTS_CIO_EXPORT(erts_check_io_debug)(ErtsCheckIoDebugInfo *ciodip) return counters.num_errors; } +#ifdef ERTS_ENABLE_LOCK_COUNT +void ERTS_CIO_EXPORT(erts_lcnt_update_cio_locks)(int enable) { +#ifndef ERTS_SYS_CONTINOUS_FD_NUMBERS + erts_lcnt_enable_hash_lock_count(&drv_ev_state_tab, ERTS_LOCK_FLAGS_CATEGORY_IO, enable); +#else + (void)enable; +#endif +} +#endif /* ERTS_ENABLE_LOCK_COUNT */ diff --git a/erts/emulator/sys/common/erl_check_io.h b/erts/emulator/sys/common/erl_check_io.h index ee4abeece9..2d3bb98afa 100644 --- a/erts/emulator/sys/common/erl_check_io.h +++ b/erts/emulator/sys/common/erl_check_io.h @@ -59,6 +59,11 @@ void erts_init_check_io_nkp(void); int erts_check_io_debug_kp(ErtsCheckIoDebugInfo *); int erts_check_io_debug_nkp(ErtsCheckIoDebugInfo *); +#ifdef ERTS_ENABLE_LOCK_COUNT +void erts_lcnt_update_cio_locks_kp(int enable); +void erts_lcnt_update_cio_locks_nkp(int enable); +#endif + #else /* !ERTS_ENABLE_KERNEL_POLL */ Uint erts_check_io_size(void); @@ -72,6 +77,10 @@ void erts_check_io_interrupt_timed(int, ErtsMonotonicTime); void erts_check_io(int); void erts_init_check_io(void); +#ifdef ERTS_ENABLE_LOCK_COUNT +void erts_lcnt_update_cio_locks(int enable); +#endif + #endif extern erts_smp_atomic_t erts_check_io_time; diff --git a/erts/emulator/sys/common/erl_mmap.c b/erts/emulator/sys/common/erl_mmap.c index bb930ff03b..214ed01c82 100644 --- a/erts/emulator/sys/common/erl_mmap.c +++ b/erts/emulator/sys/common/erl_mmap.c @@ -2212,9 +2212,11 @@ erts_mmap_init(ErtsMemMapper* mm, ErtsMMapInit *init, int executable) erts_exit(1, "erts_mmap: Failed to open /dev/zero\n"); #endif - erts_smp_mtx_init(&mm->mtx, "erts_mmap"); + erts_smp_mtx_init(&mm->mtx, "erts_mmap", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); if (is_first_call) { - erts_mtx_init(&am.init_mutex, "mmap_init_atoms"); + erts_mtx_init(&am.init_mutex, "mmap_init_atoms", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); } #ifdef ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION @@ -2816,7 +2818,8 @@ static void hard_dbg_mseg_init(void) { ErtsFreeSegDesc_fake* p; - erts_mtx_init(&hard_dbg_mseg_mtx, "hard_dbg_mseg"); + erts_mtx_init(&hard_dbg_mseg_mtx, "hard_dbg_mseg", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DEBUG); hard_dbg_mseg_tree.root = NULL; hard_dbg_mseg_tree.order = ADDR_ORDER; diff --git a/erts/emulator/sys/common/erl_mseg.c b/erts/emulator/sys/common/erl_mseg.c index b8f0bb7150..d69a79dc2a 100644 --- a/erts/emulator/sys/common/erl_mseg.c +++ b/erts/emulator/sys/common/erl_mseg.c @@ -1420,7 +1420,8 @@ erts_mseg_init(ErtsMsegInit_t *init) atoms_initialized = 0; - erts_mtx_init(&init_atoms_mutex, "mseg_init_atoms"); + erts_mtx_init(&init_atoms_mutex, "mseg_init_atoms", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); #ifdef ERTS_HAVE_EXEC_MMAPPER /* Initialize erts_exec_mapper *FIRST*, to increase probability @@ -1449,7 +1450,8 @@ erts_mseg_init(ErtsMsegInit_t *init) ma->is_thread_safe = 0; else { ma->is_thread_safe = 1; - erts_mtx_init(&ma->mtx, "mseg"); + erts_mtx_init(&ma->mtx, "mseg", make_small(i), + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_ALLOCATOR); } ma->is_cache_check_scheduled = 0; diff --git a/erts/emulator/sys/common/erl_poll.c b/erts/emulator/sys/common/erl_poll.c index 5e7ae8953a..52a8b6a53f 100644 --- a/erts/emulator/sys/common/erl_poll.c +++ b/erts/emulator/sys/common/erl_poll.c @@ -336,7 +336,7 @@ static void fatal_error_async_signal_safe(char *error_str); static int max_fds = -1; static ErtsPollSet pollsets; -static erts_smp_spinlock_t pollsets_lock; +static erts_smp_mtx_t pollsets_lock; #if ERTS_POLL_USE_POLL @@ -2583,7 +2583,8 @@ ERTS_POLL_EXPORT(erts_poll_max_fds)(void) void ERTS_POLL_EXPORT(erts_poll_init)(void) { - erts_smp_spinlock_init(&pollsets_lock, "pollsets_lock"); + erts_smp_mtx_init(&pollsets_lock, "pollsets_lock", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_IO); pollsets = NULL; errno = 0; @@ -2689,7 +2690,7 @@ ERTS_POLL_EXPORT(erts_poll_create_pollset)(void) #endif #ifdef ERTS_SMP erts_atomic32_init_nob(&ps->polled, 0); - erts_smp_mtx_init(&ps->mtx, "pollset"); + erts_smp_mtx_init(&ps->mtx, "pollset", NIL, ERTS_LOCK_FLAGS_CATEGORY_IO); #endif #if defined(USE_THREADS) || ERTS_POLL_ASYNC_INTERRUPT_SUPPORT erts_atomic32_init_nob(&ps->wakeup_state, (erts_aint32_t) 0); @@ -2731,10 +2732,10 @@ ERTS_POLL_EXPORT(erts_poll_create_pollset)(void) #endif erts_smp_atomic_set_nob(&ps->no_of_user_fds, 0); /* Don't count wakeup pipe and fallback fd */ - erts_smp_spin_lock(&pollsets_lock); + erts_smp_mtx_lock(&pollsets_lock); ps->next = pollsets; pollsets = ps; - erts_smp_spin_unlock(&pollsets_lock); + erts_smp_mtx_unlock(&pollsets_lock); return ps; } @@ -2795,7 +2796,7 @@ ERTS_POLL_EXPORT(erts_poll_destroy_pollset)(ErtsPollSet ps) close(ps->timer_fd); #endif - erts_smp_spin_lock(&pollsets_lock); + erts_smp_mtx_lock(&pollsets_lock); if (ps == pollsets) pollsets = pollsets->next; else { @@ -2805,7 +2806,7 @@ ERTS_POLL_EXPORT(erts_poll_destroy_pollset)(ErtsPollSet ps) ASSERT(ps == prev_ps->next); prev_ps->next = ps->next; } - erts_smp_spin_unlock(&pollsets_lock); + erts_smp_mtx_unlock(&pollsets_lock); erts_free(ERTS_ALC_T_POLLSET, (void *) ps); } @@ -3148,3 +3149,26 @@ print_misc_debug_info(void) } #endif + +#ifdef ERTS_ENABLE_LOCK_COUNT +static void erts_lcnt_enable_pollset_lock_count(ErtsPollSet pollset, int enable) { + if(enable) { + erts_lcnt_install_new_lock_info(&pollset->mtx.lcnt, "pollset_rm", NIL, + ERTS_LOCK_TYPE_MUTEX | ERTS_LOCK_FLAGS_CATEGORY_IO); + } else { + erts_lcnt_uninstall(&pollset->mtx.lcnt); + } +} + +void ERTS_POLL_EXPORT(erts_lcnt_update_pollset_locks)(int enable) { + ErtsPollSet iterator; + + erts_smp_mtx_lock(&pollsets_lock); + + for(iterator = pollsets; iterator != NULL; iterator = iterator->next) { + erts_lcnt_enable_pollset_lock_count(iterator, enable); + } + + erts_smp_mtx_unlock(&pollsets_lock); +} +#endif diff --git a/erts/emulator/sys/common/erl_poll.h b/erts/emulator/sys/common/erl_poll.h index c16122610d..b3b4d79984 100644 --- a/erts/emulator/sys/common/erl_poll.h +++ b/erts/emulator/sys/common/erl_poll.h @@ -260,4 +260,8 @@ void ERTS_POLL_EXPORT(erts_poll_get_selected_events)(ErtsPollSet, int erts_poll_new_table_len(int old_len, int need_len); +#ifdef ERTS_ENABLE_LOCK_COUNT +void ERTS_POLL_EXPORT(erts_lcnt_update_pollset_locks)(int enable); +#endif + #endif /* #ifndef ERL_POLL_H__ */ diff --git a/erts/emulator/sys/unix/sys.c b/erts/emulator/sys/unix/sys.c index 5cf0a49972..50d8a35217 100644 --- a/erts/emulator/sys/unix/sys.c +++ b/erts/emulator/sys/unix/sys.c @@ -438,14 +438,18 @@ erts_sys_pre_init(void) /* After creation in parent */ eid.thread_create_parent_func = thr_create_cleanup, +#ifdef ERTS_ENABLE_LOCK_COUNT + erts_lcnt_pre_thr_init(); +#endif + erts_thr_init(&eid); -#ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_init(); +#ifdef ERTS_ENABLE_LOCK_COUNT + erts_lcnt_post_thr_init(); #endif -#ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_init(); +#ifdef ERTS_ENABLE_LOCK_CHECK + erts_lc_init(); #endif #endif /* USE_THREADS */ @@ -1545,7 +1549,8 @@ erl_sys_args(int* argc, char** argv) { int i, j; - erts_smp_rwmtx_init(&environ_rwmtx, "environ"); + erts_smp_rwmtx_init(&environ_rwmtx, "environ", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); i = 1; diff --git a/erts/emulator/sys/unix/sys_time.c b/erts/emulator/sys/unix/sys_time.c index 4f26639703..102ef7bebf 100644 --- a/erts/emulator/sys/unix/sys_time.c +++ b/erts/emulator/sys/unix/sys_time.c @@ -304,8 +304,8 @@ sys_init_time(ErtsSysInitTimeResult *init_resp) erts_sys_time_data__.r.o.os_times = clock_gettime_times_verified; #endif - erts_smp_mtx_init(&internal_state.w.f.mtx, - "os_monotonic_time"); + erts_smp_mtx_init(&internal_state.w.f.mtx, "os_monotonic_time", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_IO); internal_state.w.f.last_delivered = clock_gettime_monotonic(); init_resp->os_monotonic_time_info.locked_use = 1; diff --git a/erts/emulator/sys/win32/erl_poll.c b/erts/emulator/sys/win32/erl_poll.c index b10fc1e430..8743f83a50 100644 --- a/erts/emulator/sys/win32/erl_poll.c +++ b/erts/emulator/sys/win32/erl_poll.c @@ -142,7 +142,8 @@ static erts_mtx_t save_ops_mtx; static void poll_debug_init(void) { - erts_mtx_init(&save_ops_mtx, "save_ops_lock"); + erts_mtx_init(&save_ops_mtx, "save_ops_lock", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DEBUG); } void poll_debug_set_active_fd(ErtsSysFdType fd) @@ -677,7 +678,7 @@ static void new_waiter(ErtsPollSet ps) w->active_events = 1; w->highwater = 1; w->total_events = 1; - erts_mtx_init(&w->mtx, "pollwaiter"); + erts_mtx_init(&w->mtx, "pollwaiter", NIL, ERTS_LOCK_FLAGS_CATEGORY_IO); /* @@ -1359,7 +1360,7 @@ ErtsPollSet erts_poll_create_pollset(void) erts_atomic32_init_nob(&ps->wakeup_state, ERTS_POLL_NOT_WOKEN); #ifdef ERTS_SMP - erts_smp_mtx_init(&ps->mtx, "pollset"); + erts_smp_mtx_init(&ps->mtx, "pollset", NIL, ERTS_LOCK_FLAGS_CATEGORY_IO); #endif init_timeout_time(ps); @@ -1411,7 +1412,8 @@ void erts_poll_init(void) HARDTRACEF(("In erts_poll_init")); erts_sys_break_event = CreateManualEvent(FALSE); - erts_mtx_init(&break_waiter_lock,"break_waiter_lock"); + erts_mtx_init(&break_waiter_lock, "break_waiter_lock", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_IO); break_happened_event = CreateManualEvent(FALSE); erts_atomic32_init_nob(&break_waiter_state, 0); diff --git a/erts/emulator/sys/win32/sys.c b/erts/emulator/sys/win32/sys.c index 28019e306c..15c59109b1 100644 --- a/erts/emulator/sys/win32/sys.c +++ b/erts/emulator/sys/win32/sys.c @@ -3195,15 +3195,22 @@ erts_sys_pre_init(void) /* After creation in parent */ eid.thread_create_parent_func = thr_create_cleanup; - erts_thr_init(&eid); -#ifdef ERTS_ENABLE_LOCK_CHECK - erts_lc_init(); +#ifdef ERTS_ENABLE_LOCK_COUNT + erts_lcnt_pre_thr_init(); #endif + + erts_thr_init(&eid); + #ifdef ERTS_ENABLE_LOCK_COUNT - erts_lcnt_init(); + erts_lcnt_post_thr_init(); #endif + +#ifdef ERTS_ENABLE_LOCK_CHECK + erts_lc_init(); #endif +#endif /* USE_THREADS */ + erts_init_sys_time_sup(); erts_smp_atomic_init_nob(&sys_misc_mem_sz, 0); diff --git a/erts/emulator/sys/win32/sys_env.c b/erts/emulator/sys/win32/sys_env.c index 21ef71ad9a..8fcee1cbb6 100644 --- a/erts/emulator/sys/win32/sys_env.c +++ b/erts/emulator/sys/win32/sys_env.c @@ -37,7 +37,8 @@ static erts_smp_rwmtx_t environ_rwmtx; void
erts_sys_env_init(void)
{
- erts_smp_rwmtx_init(&environ_rwmtx, "environ");
+ erts_smp_rwmtx_init(&environ_rwmtx, "environ", NIL,
+ ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC);
}
int
diff --git a/erts/emulator/sys/win32/sys_time.c b/erts/emulator/sys/win32/sys_time.c index e8c67b3928..88131aaa6a 100644 --- a/erts/emulator/sys/win32/sys_time.c +++ b/erts/emulator/sys/win32/sys_time.c @@ -300,8 +300,8 @@ sys_init_time(ErtsSysInitTimeResult *init_resp) module = GetModuleHandle(kernel_dll_name); if (!module) { get_tick_count: - erts_smp_mtx_init(&internal_state.w.f.mtime_mtx, - "os_monotonic_time"); + erts_smp_mtx_init(&internal_state.w.f.mtime_mtx, "os_monotonic_time", NIL, + ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC); internal_state.w.f.wrap = 0; internal_state.w.f.last_tick_count = 0; diff --git a/erts/emulator/test/Makefile b/erts/emulator/test/Makefile index fcd7244ae9..370fcb0f3a 100644 --- a/erts/emulator/test/Makefile +++ b/erts/emulator/test/Makefile @@ -73,6 +73,7 @@ MODULES= \ hipe_SUITE \ list_bif_SUITE \ lttng_SUITE \ + lcnt_SUITE \ map_SUITE \ match_spec_SUITE \ module_info_SUITE \ diff --git a/erts/emulator/test/fun_SUITE.erl b/erts/emulator/test/fun_SUITE.erl index e4640909aa..7d29ebec52 100644 --- a/erts/emulator/test/fun_SUITE.erl +++ b/erts/emulator/test/fun_SUITE.erl @@ -22,6 +22,7 @@ -export([all/0, suite/0, bad_apply/1,bad_fun_call/1,badarity/1,ext_badarity/1, + bad_arglist/1, equality/1,ordering/1, fun_to_port/1,t_phash/1,t_phash2/1,md5/1, refc/1,refc_ets/1,refc_dist/1, @@ -39,6 +40,7 @@ suite() -> all() -> [bad_apply, bad_fun_call, badarity, ext_badarity, + bad_arglist, equality, ordering, fun_to_port, t_phash, t_phash2, md5, refc, refc_ets, refc_dist, const_propagation, t_arity, t_is_function2, t_fun_info, @@ -107,6 +109,18 @@ bad_call_fc(Fun) -> ct:fail({bad_result,Other}) end. +% Test erlang:apply with non-proper arg-list +bad_arglist(Config) when is_list(Config) -> + Fun = fun(A,B) -> A+B end, + {'EXIT', {badarg,_}} = (catch apply(Fun, 17)), + {'EXIT', {badarg,_}} = (catch apply(Fun, [17|18])), + {'EXIT', {badarg,_}} = (catch apply(Fun, [17,18|19])), + {'EXIT', {badarg,_}} = (catch apply(lists,seq, 17)), + {'EXIT', {badarg,_}} = (catch apply(lists,seq, [17|18])), + {'EXIT', {badarg,_}} = (catch apply(lists,seq, [17,18|19])), + ok. + + %% Call and apply valid funs with wrong number of arguments. badarity(Config) when is_list(Config) -> diff --git a/erts/emulator/test/lcnt_SUITE.erl b/erts/emulator/test/lcnt_SUITE.erl new file mode 100644 index 0000000000..504b9b54cf --- /dev/null +++ b/erts/emulator/test/lcnt_SUITE.erl @@ -0,0 +1,156 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2017. All Rights Reserved. +%% +%% Licensed under the Apache License, Version 2.0 (the "License"); +%% you may not use this file except in compliance with the License. +%% You may obtain a copy of the License at +%% +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. +%% +%% %CopyrightEnd% +%% + +-module(lcnt_SUITE). + +-include_lib("common_test/include/ct.hrl"). + +-export( + [all/0, suite/0, + init_per_suite/1, end_per_suite/1, + init_per_testcase/2, end_per_testcase/2]). + +-export( + [toggle_lock_counting/1, error_on_invalid_category/1, preserve_locks/1]). + +suite() -> + [{ct_hooks,[ts_install_cth]}, + {timetrap, {seconds, 10}}]. + +all() -> + [toggle_lock_counting, error_on_invalid_category, preserve_locks]. + +init_per_suite(Config) -> + case erlang:system_info(lock_counting) of + true -> + %% The tests will run straight over these properties, so we have to + %% preserve them to avoid tainting the other tests. + OldCopySave = erts_debug:lcnt_control(copy_save), + OldMask = erts_debug:lcnt_control(mask), + [{lcnt_SUITE, {OldCopySave, OldMask}} | Config]; + _ -> + {skip, "Lock counting is not enabled"} + end. + +end_per_suite(Config) -> + {OldCopySave, OldMask} = proplists:get_value(lcnt_SUITE, Config), + + erts_debug:lcnt_control(copy_save, OldCopySave), + OldCopySave = erts_debug:lcnt_control(copy_save), + + erts_debug:lcnt_control(mask, OldMask), + OldMask = erts_debug:lcnt_control(mask), + + erts_debug:lcnt_clear(), + ok. + +init_per_testcase(_Case, Config) -> + disable_lock_counting(), + Config. + +end_per_testcase(_Case, _Config) -> + ok. + +disable_lock_counting() -> + ok = erts_debug:lcnt_control(copy_save, false), + ok = erts_debug:lcnt_control(mask, []), + ok = erts_debug:lcnt_clear(), + + %% Sanity check. + false = erts_debug:lcnt_control(copy_save), + [] = erts_debug:lcnt_control(mask), + + %% The above commands rely on some lazy operations, so we'll have to wait + %% for the list to clear. + ok = wait_for_empty_lock_list(). + +wait_for_empty_lock_list() -> + wait_for_empty_lock_list(10). +wait_for_empty_lock_list(Tries) when Tries > 0 -> + try_flush_cleanup_ops(), + case erts_debug:lcnt_collect() of + [{duration, _}, {locks, []}] -> + ok; + _ -> + timer:sleep(50), + wait_for_empty_lock_list(Tries - 1) + end; +wait_for_empty_lock_list(0) -> + ct:fail("Lock list failed to clear after disabling lock counting."). + +%% Queue up a lot of thread progress cleanup ops in a vain attempt to +%% flush the lock list. +try_flush_cleanup_ops() -> + false = lists:member(process, erts_debug:lcnt_control(mask)), + [spawn(fun() -> ok end) || _ <- lists:seq(1, 1000)]. + +%% +%% Test cases +%% + +toggle_lock_counting(Config) when is_list(Config) -> + Categories = + [allocator, db, debug, distribution, generic, io, process, scheduler], + lists:foreach( + fun(Category) -> + Locks = get_lock_info_for(Category), + if + Locks =/= [] -> + disable_lock_counting(); + Locks =:= [] -> + ct:fail("Failed to toggle ~p locks.", [Category]) + end + end, Categories). + +get_lock_info_for(Categories) when is_list(Categories) -> + ok = erts_debug:lcnt_control(mask, Categories), + [{duration, _}, {locks, Locks}] = erts_debug:lcnt_collect(), + Locks; + +get_lock_info_for(Category) when is_atom(Category) -> + get_lock_info_for([Category]). + +preserve_locks(Config) when is_list(Config) -> + erts_debug:lcnt_control(mask, [process]), + + erts_debug:lcnt_control(copy_save, true), + [spawn(fun() -> ok end) || _ <- lists:seq(1, 1000)], + + %% Wait for the processes to be fully destroyed before disabling copy_save, + %% then remove all active locks from the list. (There's no foolproof method + %% to do this; sleeping before/after is the best way we have) + timer:sleep(500), + + erts_debug:lcnt_control(copy_save, false), + erts_debug:lcnt_control(mask, []), + + try_flush_cleanup_ops(), + timer:sleep(500), + + case erts_debug:lcnt_collect() of + [{duration, _}, {locks, Locks}] when length(Locks) > 0 -> + ct:pal("Preserved ~p locks.", [length(Locks)]); + [{duration, _}, {locks, []}] -> + ct:fail("copy_save didn't preserve any locks.") + end. + +error_on_invalid_category(Config) when is_list(Config) -> + {error, badarg, q_invalid} = erts_debug:lcnt_control(mask, [q_invalid]), + ok. diff --git a/erts/emulator/test/nif_SUITE.erl b/erts/emulator/test/nif_SUITE.erl index 05c250125d..0337274178 100644 --- a/erts/emulator/test/nif_SUITE.erl +++ b/erts/emulator/test/nif_SUITE.erl @@ -2886,11 +2886,15 @@ nif_whereis_parallel(Config) when is_list(Config) -> true = lists:all(PidReg, Procs), %% tell them all to 'fire' as fast as we can - [P ! {Ref, send_proc} || {_, P, _} <- Procs], + repeat(10, fun(_) -> + [P ! {Ref, send_proc} || {_, P, _} <- Procs] + end, void), %% each gets forwarded through two processes - true = lists:all(RecvNum, NSeq), - true = lists:all(RecvNum, NSeq), + repeat(10, fun(_) -> + true = lists:all(RecvNum, NSeq), + true = lists:all(RecvNum, NSeq) + end, void), %% tell them all to 'quit' by name [N ! {Ref, quit} || {N, _, _} <- Procs], diff --git a/erts/emulator/test/register_SUITE.erl b/erts/emulator/test/register_SUITE.erl index 43ae749498..49da94a775 100644 --- a/erts/emulator/test/register_SUITE.erl +++ b/erts/emulator/test/register_SUITE.erl @@ -44,14 +44,7 @@ all() -> -define(OTP_8099_NAME, otp_8099_reg_proc). otp_8099(Config) when is_list(Config) -> - case catch erlang:system_info(lock_counting) of - true -> {skipped, - "Lock counting enabled. Current lock counting " - "implementation cannot handle this many " - "processes."}; - _ -> - otp_8099_test(1000000) - end. + otp_8099_test(1000000). otp_8099_test(0) -> ok; |