diff options
Diffstat (limited to 'erts/emulator/beam')
25 files changed, 2760 insertions, 1315 deletions
diff --git a/erts/emulator/beam/beam_debug.c b/erts/emulator/beam/beam_debug.c index 8326d348af..3f4a1f9e80 100644 --- a/erts/emulator/beam/beam_debug.c +++ b/erts/emulator/beam/beam_debug.c @@ -308,7 +308,7 @@ erts_debug_disassemble_1(BIF_ALIST_1) BIF_RET(am_undef); } } - code_ptr = erts_codemfa_to_code(cmfa); + code_ptr = (BeamInstr*)erts_code_to_codeinfo(erts_codemfa_to_code(cmfa)); } else { goto error; } @@ -853,15 +853,23 @@ dirty_test(Process *c_p, Eterm type, Eterm arg1, Eterm arg2, UWord *I) goto badarg; esdp = erts_proc_sched_data(c_p); if (!esdp) - ERTS_BIF_PREP_RET(ret, am_error); - else if (!ERTS_SCHEDULER_IS_DIRTY(esdp)) + goto scheduler_type_error; + + switch (esdp->type) { + case ERTS_SCHED_NORMAL: ERTS_BIF_PREP_RET(ret, am_normal); - else if (ERTS_SCHEDULER_IS_DIRTY_CPU(esdp)) + break; + case ERTS_SCHED_DIRTY_CPU: ERTS_BIF_PREP_RET(ret, am_dirty_cpu); - else if (ERTS_SCHEDULER_IS_DIRTY_IO(esdp)) + break; + case ERTS_SCHED_DIRTY_IO: ERTS_BIF_PREP_RET(ret, am_dirty_io); - else + break; + default: + scheduler_type_error: ERTS_BIF_PREP_RET(ret, am_error); + break; + } } else if (am_error == arg1) { switch (arg2) { @@ -1118,3 +1126,48 @@ ms_wait(Process *c_p, Eterm etimeout, int busy) } #endif /* ERTS_DIRTY_SCHEDULERS */ + +#ifdef ERTS_SMP +# define ERTS_STACK_LIMIT ((char *) ethr_get_stacklimit()) +#else +# define ERTS_STACK_LIMIT ((char *) erts_scheduler_stack_limit) +#endif + +/* + * The below functions is for testing of the stack + * limit functionality. They are intentionally + * written body recursive in order to prevent + * last call optimization... + */ + +UWord +erts_check_stack_recursion_downwards(char *start_c) +{ + char *limit = ERTS_STACK_LIMIT; + char c; + UWord res; + if (erts_check_below_limit(&c, limit + 1024)) + return (char *) erts_ptr_id(start_c) - (char *) erts_ptr_id(&c); + res = erts_check_stack_recursion_downwards(start_c); + erts_ptr_id(&c); + return res; +} + +UWord +erts_check_stack_recursion_upwards(char *start_c) +{ + char *limit = ERTS_STACK_LIMIT; + char c; + UWord res; + if (erts_check_above_limit(&c, limit - 1024)) + return (char *) erts_ptr_id(&c) - (char *) erts_ptr_id(start_c); + res = erts_check_stack_recursion_upwards(start_c); + erts_ptr_id(&c); + return res; +} + +int +erts_is_above_stack_limit(char *ptr) +{ + return (char *) ptr > ERTS_STACK_LIMIT; +} diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c index 321008616d..3d36094e07 100644 --- a/erts/emulator/beam/beam_emu.c +++ b/erts/emulator/beam/beam_emu.c @@ -3044,10 +3044,12 @@ do { \ GetArg2(2, Op1, Op2); if (is_both_small(Op1, Op2)) { /* - * We could extract the tag from one argument, but a tag extraction - * could mean a shift. Therefore, play it safe here. + * TAG ^ TAG == 0. + * + * Therefore, we perform the XOR operation on the tagged values, + * and OR in the tag bits. */ - Eterm result = make_small(signed_val(Op1) ^ signed_val(Op2)); + Eterm result = (Op1 ^ Op2) | make_small(0); StoreBifResult(4, result); } DO_OUTLINED_ARITH_2(bxor, Op1, Op2); diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c index 2d37f977c0..84c9f9d7c4 100644 --- a/erts/emulator/beam/bif.c +++ b/erts/emulator/beam/bif.c @@ -3109,7 +3109,7 @@ BIF_RETTYPE integer_to_list_1(BIF_ALIST_1) * On error returns: {error,not_a_list}, or {error, no_integer} */ -BIF_RETTYPE string_to_integer_1(BIF_ALIST_1) +BIF_RETTYPE string_list_to_integer_1(BIF_ALIST_1) { Eterm res; Eterm tail; @@ -3295,7 +3295,7 @@ BIF_RETTYPE float_to_binary_2(BIF_ALIST_2) #define LOAD_E(xi,xim,xl,xlm) ((xi)=(xim), (xl)=(xlm)) #define STRING_TO_FLOAT_BUF_INC_SZ (128) -BIF_RETTYPE string_to_float_1(BIF_ALIST_1) +BIF_RETTYPE string_list_to_float_1(BIF_ALIST_1) { Eterm orig = BIF_ARG_1; Eterm list = orig; @@ -4254,6 +4254,75 @@ BIF_RETTYPE list_to_pid_1(BIF_ALIST_1) BIF_ERROR(BIF_P, BADARG); } +BIF_RETTYPE list_to_port_1(BIF_ALIST_1) +{ + /* + * A valid port identifier is on the format + * "#Port<N.P>" where N is node and P is + * the port id. Both N and P are of type Uint32. + */ + Uint32 n, p; + char* cp; + int i; + DistEntry *dep = NULL; + char buf[6 /* #Port< */ + + (2)*(10 + 1) /* N.P> */ + + 1 /* \0 */]; + + /* walk down the list and create a C string */ + if ((i = intlist_to_buf(BIF_ARG_1, buf, sizeof(buf)-1)) < 0) + goto bad; + + buf[i] = '\0'; /* null terminal */ + + cp = &buf[0]; + if (strncmp("#Port<", cp, 6) != 0) + goto bad; + + cp += 6; /* strlen("#Port<") */ + + if (sscanf(cp, "%u.%u>", &n, &p) < 2) + goto bad; + + if (p > ERTS_MAX_PORT_NUMBER) + goto bad; + + dep = erts_channel_no_to_dist_entry(n); + + if (!dep) + goto bad; + + if(dep == erts_this_dist_entry) { + erts_deref_dist_entry(dep); + BIF_RET(make_internal_port(p)); + } + else { + ExternalThing *etp; + ErlNode *enp; + + if (is_nil(dep->cid)) + goto bad; + + enp = erts_find_or_insert_node(dep->sysname, dep->creation); + ASSERT(enp != erts_this_node); + + etp = (ExternalThing *) HAlloc(BIF_P, EXTERNAL_THING_HEAD_SIZE + 1); + etp->header = make_external_port_header(1); + etp->next = MSO(BIF_P).first; + etp->node = enp; + etp->data.ui[0] = p; + + MSO(BIF_P).first = (struct erl_off_heap_header*) etp; + erts_deref_dist_entry(dep); + BIF_RET(make_external_port(etp)); + } + + bad: + if (dep) + erts_deref_dist_entry(dep); + BIF_ERROR(BIF_P, BADARG); +} + BIF_RETTYPE list_to_ref_1(BIF_ALIST_1) { /* @@ -4506,41 +4575,37 @@ BIF_RETTYPE system_flag_2(BIF_ALIST_2) || BIF_ARG_2 == am_block_normal); int normal = (BIF_ARG_2 == am_block_normal || BIF_ARG_2 == am_unblock_normal); - if (erts_no_schedulers == 1) - BIF_RET(am_disabled); - else { - switch (erts_block_multi_scheduling(BIF_P, - ERTS_PROC_LOCK_MAIN, - block, - normal, - 0)) { - case ERTS_SCHDLR_SSPND_DONE_MSCHED_BLOCKED: - BIF_RET(am_blocked); - case ERTS_SCHDLR_SSPND_DONE_NMSCHED_BLOCKED: - BIF_RET(am_blocked_normal); - case ERTS_SCHDLR_SSPND_YIELD_DONE_MSCHED_BLOCKED: - ERTS_BIF_YIELD_RETURN_X(BIF_P, am_blocked, - am_multi_scheduling); - case ERTS_SCHDLR_SSPND_YIELD_DONE_NMSCHED_BLOCKED: - ERTS_BIF_YIELD_RETURN_X(BIF_P, am_blocked_normal, - am_multi_scheduling); - case ERTS_SCHDLR_SSPND_DONE: - BIF_RET(am_enabled); - case ERTS_SCHDLR_SSPND_YIELD_RESTART: - ERTS_VBUMP_ALL_REDS(BIF_P); - BIF_TRAP2(bif_export[BIF_system_flag_2], - BIF_P, BIF_ARG_1, BIF_ARG_2); - case ERTS_SCHDLR_SSPND_YIELD_DONE: - ERTS_BIF_YIELD_RETURN_X(BIF_P, am_enabled, - am_multi_scheduling); - case ERTS_SCHDLR_SSPND_EINVAL: - goto error; - default: - ASSERT(0); - BIF_ERROR(BIF_P, EXC_INTERNAL_ERROR); - break; - } - } + switch (erts_block_multi_scheduling(BIF_P, + ERTS_PROC_LOCK_MAIN, + block, + normal, + 0)) { + case ERTS_SCHDLR_SSPND_DONE_MSCHED_BLOCKED: + BIF_RET(am_blocked); + case ERTS_SCHDLR_SSPND_DONE_NMSCHED_BLOCKED: + BIF_RET(am_blocked_normal); + case ERTS_SCHDLR_SSPND_YIELD_DONE_MSCHED_BLOCKED: + ERTS_BIF_YIELD_RETURN_X(BIF_P, am_blocked, + am_multi_scheduling); + case ERTS_SCHDLR_SSPND_YIELD_DONE_NMSCHED_BLOCKED: + ERTS_BIF_YIELD_RETURN_X(BIF_P, am_blocked_normal, + am_multi_scheduling); + case ERTS_SCHDLR_SSPND_DONE: + BIF_RET(am_enabled); + case ERTS_SCHDLR_SSPND_YIELD_RESTART: + ERTS_VBUMP_ALL_REDS(BIF_P); + BIF_TRAP2(bif_export[BIF_system_flag_2], + BIF_P, BIF_ARG_1, BIF_ARG_2); + case ERTS_SCHDLR_SSPND_YIELD_DONE: + ERTS_BIF_YIELD_RETURN_X(BIF_P, am_enabled, + am_multi_scheduling); + case ERTS_SCHDLR_SSPND_EINVAL: + goto error; + default: + ASSERT(0); + BIF_ERROR(BIF_P, EXC_INTERNAL_ERROR); + break; + } #endif } } else if (BIF_ARG_1 == am_schedulers_online) { diff --git a/erts/emulator/beam/bif.tab b/erts/emulator/beam/bif.tab index 4140938210..3f6d82d65c 100644 --- a/erts/emulator/beam/bif.tab +++ b/erts/emulator/beam/bif.tab @@ -88,6 +88,7 @@ bif erlang:list_to_binary/1 bif erlang:list_to_float/1 bif erlang:list_to_integer/1 bif erlang:list_to_pid/1 +bif erlang:list_to_port/1 bif erlang:list_to_ref/1 bif erlang:list_to_tuple/1 bif erlang:loaded/0 @@ -393,6 +394,7 @@ bif erl_ddll:demonitor/1 # # Bifs in the re module # +bif re:version/0 bif re:compile/1 bif re:compile/2 bif re:run/2 @@ -459,8 +461,8 @@ bif error_logger:warning_map/0 bif erlang:get_module_info/1 bif erlang:get_module_info/2 ubif erlang:is_boolean/1 -bif string:to_integer/1 -bif string:to_float/1 +bif string:list_to_integer/1 +bif string:list_to_float/1 bif erlang:make_fun/3 bif erlang:iolist_size/1 bif erlang:iolist_to_binary/1 diff --git a/erts/emulator/beam/break.c b/erts/emulator/beam/break.c index 4703fb0933..e23fdb83d9 100644 --- a/erts/emulator/beam/break.c +++ b/erts/emulator/beam/break.c @@ -590,7 +590,7 @@ do_break(void) #endif #ifdef DEBUG case 't': - erts_p_slpq(); + /* erts_p_slpq(); */ return; case 'b': bin_check(); diff --git a/erts/emulator/beam/dist.h b/erts/emulator/beam/dist.h index 8f6be1061a..6ed36a478e 100644 --- a/erts/emulator/beam/dist.h +++ b/erts/emulator/beam/dist.h @@ -53,6 +53,7 @@ | DFLAG_EXPORT_PTR_TAG \ | DFLAG_BIT_BINARIES \ | DFLAG_MAP_TAG \ + | DFLAG_UTF8_ATOMS \ | DFLAG_BIG_CREATION) /* opcodes used in distribution messages */ diff --git a/erts/emulator/beam/erl_alloc.c b/erts/emulator/beam/erl_alloc.c index a374593c5d..71957b2259 100644 --- a/erts/emulator/beam/erl_alloc.c +++ b/erts/emulator/beam/erl_alloc.c @@ -678,10 +678,6 @@ erts_alloc_init(int *argc, char **argv, ErtsAllocInitOpts *eaiop) = erts_timer_type_size(ERTS_ALC_T_HL_PTIMER); fix_type_sizes[ERTS_ALC_FIX_TYPE_IX(ERTS_ALC_T_BIF_TIMER)] = erts_timer_type_size(ERTS_ALC_T_BIF_TIMER); -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - fix_type_sizes[ERTS_ALC_FIX_TYPE_IX(ERTS_ALC_T_ABIF_TIMER)] - = erts_timer_type_size(ERTS_ALC_T_ABIF_TIMER); -#endif fix_type_sizes[ERTS_ALC_FIX_TYPE_IX(ERTS_ALC_T_NIF_EXP_TRACE)] = sizeof(NifExportTrace); fix_type_sizes[ERTS_ALC_FIX_TYPE_IX(ERTS_ALC_T_MREF_NSCHED_ENT)] @@ -2440,12 +2436,6 @@ erts_memory(fmtfn_t *print_to_p, void *print_to_arg, void *proc, Eterm earg) &size.processes_used, fi, ERTS_ALC_T_BIF_TIMER); -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - add_fix_values(&size.processes, - &size.processes_used, - fi, - ERTS_ALC_T_ABIF_TIMER); -#endif add_fix_values(&size.processes, &size.processes_used, fi, diff --git a/erts/emulator/beam/erl_alloc.types b/erts/emulator/beam/erl_alloc.types index 43f43f9034..f296a98125 100644 --- a/erts/emulator/beam/erl_alloc.types +++ b/erts/emulator/beam/erl_alloc.types @@ -168,7 +168,6 @@ type TIMER_SERVICE LONG_LIVED SYSTEM timer_service type LL_PTIMER FIXED_SIZE PROCESSES ll_ptimer type HL_PTIMER FIXED_SIZE PROCESSES hl_ptimer type BIF_TIMER FIXED_SIZE PROCESSES bif_timer -# type ABIF_TIMER FIXED_SIZE PROCESSES accessor_bif_timer type TIMER_REQUEST SHORT_LIVED PROCESSES timer_request type BTM_YIELD_STATE SHORT_LIVED PROCESSES btm_yield_state type REG_TABLE STANDARD SYSTEM reg_tab diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c index 6d10ced87a..3a70c6036b 100644 --- a/erts/emulator/beam/erl_bif_info.c +++ b/erts/emulator/beam/erl_bif_info.c @@ -3743,6 +3743,21 @@ BIF_RETTYPE erts_debug_get_internal_state_1(BIF_ALIST_1) BIF_RET(erts_sint64_to_big(value, &hp)); } } + else if (ERTS_IS_ATOM_STR("stack_check", BIF_ARG_1)) { + UWord size; + char c; + if (erts_is_above_stack_limit(&c)) + size = erts_check_stack_recursion_downwards(&c); + else + size = erts_check_stack_recursion_upwards(&c); + if (IS_SSMALL(size)) + BIF_RET(make_small(size)); + else { + Uint hsz = BIG_UWORD_HEAP_SIZE(size); + Eterm *hp = HAlloc(BIF_P, hsz); + BIF_RET(uword_to_big(size, hp)); + } + } } else if (is_tuple(BIF_ARG_1)) { Eterm* tp = tuple_val(BIF_ARG_1); diff --git a/erts/emulator/beam/erl_bif_re.c b/erts/emulator/beam/erl_bif_re.c index a66b05c6ff..a72697eb80 100644 --- a/erts/emulator/beam/erl_bif_re.c +++ b/erts/emulator/beam/erl_bif_re.c @@ -64,12 +64,47 @@ static void erts_erts_pcre_stack_free(void *ptr) { erts_free(ERTS_ALC_T_RE_STACK,ptr); } +#define ERTS_PCRE_STACK_MARGIN (10*1024) + +#ifdef ERTS_SMP +# define ERTS_STACK_LIMIT ((char *) ethr_get_stacklimit()) +#else +# define ERTS_STACK_LIMIT ((char *) erts_scheduler_stack_limit) +#endif + +static int +stack_guard_downwards(void) +{ + char *limit = ERTS_STACK_LIMIT; + char c; + + ASSERT(limit); + + return erts_check_below_limit(&c, limit + ERTS_PCRE_STACK_MARGIN); +} + +static int +stack_guard_upwards(void) +{ + char *limit = ERTS_STACK_LIMIT; + char c; + + ASSERT(limit); + + return erts_check_above_limit(&c, limit - ERTS_PCRE_STACK_MARGIN); +} + void erts_init_bif_re(void) { + char c; erts_pcre_malloc = &erts_erts_pcre_malloc; erts_pcre_free = &erts_erts_pcre_free; erts_pcre_stack_malloc = &erts_erts_pcre_stack_malloc; erts_pcre_stack_free = &erts_erts_pcre_stack_free; + if ((char *) erts_ptr_id(&c) > ERTS_STACK_LIMIT) + erts_pcre_stack_guard = stack_guard_downwards; + else + erts_pcre_stack_guard = stack_guard_upwards; default_table = NULL; /* ISO8859-1 default, forced into pcre */ max_loop_limit = CONTEXT_REDS * LOOP_FACTOR; @@ -477,6 +512,17 @@ build_compile_result(Process *p, Eterm error_tag, pcre *result, int errcode, con * Compile BIFs */ +BIF_RETTYPE +re_version_0(BIF_ALIST_0) +{ + Eterm ret; + size_t version_size = 0; + byte *version = (byte *) erts_pcre_version(); + version_size = strlen((const char *) version); + ret = new_binary(BIF_P, version, version_size); + BIF_RET(ret); +} + static BIF_RETTYPE re_compile(Process* p, Eterm arg1, Eterm arg2) { diff --git a/erts/emulator/beam/erl_gc.c b/erts/emulator/beam/erl_gc.c index 8605b8a22a..a991c2c164 100644 --- a/erts/emulator/beam/erl_gc.c +++ b/erts/emulator/beam/erl_gc.c @@ -479,9 +479,15 @@ delay_garbage_collection(Process *p, ErlHeapFragment *live_hf_end, int need, int p->live_hf_end = live_hf_end; } - if (need == 0) + if (need == 0) { +#ifdef ERTS_DIRTY_SCHEDULERS + if (p->flags & (F_DIRTY_MAJOR_GC|F_DIRTY_MINOR_GC)) { + ASSERT(!ERTS_SCHEDULER_IS_DIRTY(erts_proc_sched_data(p))); + goto force_reschedule; + } +#endif return 1; - + } /* * Satisfy need in a heap fragment... */ @@ -534,6 +540,10 @@ delay_garbage_collection(Process *p, ErlHeapFragment *live_hf_end, int need, int p->heap_hfrag = hfrag; #endif +#ifdef ERTS_DIRTY_SCHEDULERS +force_reschedule: +#endif + /* Make sure that we do a proper GC as soon as possible... */ p->flags |= F_FORCE_GC; reds_left = ERTS_REDS_LEFT(p, fcalls); diff --git a/erts/emulator/beam/erl_hl_timer.c b/erts/emulator/beam/erl_hl_timer.c index 26be8c7edf..13d6136672 100644 --- a/erts/emulator/beam/erl_hl_timer.c +++ b/erts/emulator/beam/erl_hl_timer.c @@ -29,6 +29,8 @@ # include "config.h" #endif +/* #define ERTS_MAGIC_REF_BIF_TIMERS */ + #include "sys.h" #include "global.h" #include "bif.h" @@ -36,6 +38,9 @@ #define ERTS_WANT_TIMER_WHEEL_API #include "erl_time.h" #include "erl_hl_timer.h" +#ifdef ERTS_MAGIC_REF_BIF_TIMERS +#include "erl_binary.h" +#endif #define ERTS_TMR_CHECK_CANCEL_ON_CREATE 0 @@ -106,9 +111,6 @@ typedef enum { #define ERTS_TMR_ROFLG_PROC (((Uint32) 1) << 14) #define ERTS_TMR_ROFLG_PORT (((Uint32) 1) << 15) #define ERTS_TMR_ROFLG_CALLBACK (((Uint32) 1) << 16) -#ifdef ERTS_BTM_ACCESSOR_SUPPORT -#define ERTS_TMR_ROFLG_ABIF_TMR (((Uint32) 1) << 17) -#endif #define ERTS_TMR_ROFLG_SID_MASK \ (ERTS_TMR_ROFLG_HLT - (Uint32) 1) @@ -127,6 +129,13 @@ typedef struct ErtsHLTimer_ ErtsHLTimer; #define ERTS_HLT_PFIELD_NOT_IN_TABLE (~((UWord) 0)) +typedef struct ErtsBifTimer_ ErtsBifTimer; + +typedef struct { + ErtsBifTimer *next; + ErtsBifTimer *prev; +} ErtsBifTimerList; + typedef struct { UWord parent; /* parent pointer and flags... */ union { @@ -144,9 +153,9 @@ typedef struct { typedef struct { UWord parent; /* parent pointer and flags... */ - ErtsHLTimer *right; - ErtsHLTimer *left; -} ErtsHLTimerTree; + ErtsBifTimer *right; + ErtsBifTimer *left; +} ErtsBifTimerTree; typedef struct { Uint32 roflgs; @@ -155,67 +164,75 @@ typedef struct { void *arg; erts_atomic_t next; } u; + union { + Process *proc; + Port *port; + Eterm name; + void (*callback)(void *); + } receiver; } ErtsTmrHead; struct ErtsHLTimer_ { ErtsTmrHead head; /* NEED to be first! */ + ErtsMonotonicTime timeout; union { ErtsThrPrgrLaterOp cleanup; ErtsHLTimerTimeTree tree; } time; - ErtsMonotonicTime timeout; - union { - Process *proc; - Port *port; - Eterm name; - void (*callback)(void *); - } receiver; #ifdef ERTS_HLT_HARD_DEBUG int pending_timeout; #endif - - erts_smp_atomic32_t state; - - /* BIF timer only fields follow... */ - struct { - Uint32 refn[ERTS_REF_NUMBERS]; - ErtsHLTimerTree proc_tree; - ErtsHLTimerTree tree; - Eterm message; - ErlHeapFragment *bp; - } btm; -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - struct { - Eterm accessor; - ErtsHLTimerTree tree; - } abtm; -#endif }; -#define ERTS_HL_PTIMER_SIZE offsetof(ErtsHLTimer, btm) -#ifdef ERTS_BTM_ACCESSOR_SUPPORT -#define ERTS_BIF_TIMER_SIZE offsetof(ErtsHLTimer, abtm) -#define ERTS_ABIF_TIMER_SIZE sizeof(ErtsHLTimer) -#else -#define ERTS_BIF_TIMER_SIZE sizeof(ErtsHLTimer) -#endif - typedef struct { ErtsTmrHead head; /* NEED to be first! */ union { - void *p; - void (*callback)(void *); + ErtsTWheelTimer tw_tmr; + ErtsThrPrgrLaterOp cleanup; } u; - ErtsTWheelTimer tw_tmr; } ErtsTWTimer; +struct ErtsBifTimer_ { + union { + ErtsTmrHead head; + ErtsHLTimer hlt; + ErtsTWTimer twt; + } type; + struct { + erts_smp_atomic32_t state; +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + ErtsMagicBinary *mbin; + ErtsHLTimerList proc_list; +#else + Uint32 refn[ERTS_REF_NUMBERS]; + ErtsBifTimerTree proc_tree; + ErtsBifTimerTree tree; +#endif + Eterm message; + ErlHeapFragment *bp; + } btm; +}; + typedef union { ErtsTmrHead head; ErtsHLTimer hlt; ErtsTWTimer twt; + ErtsBifTimer btm; } ErtsTimer; +typedef ErtsTimer *(*ErtsCreateTimerFunc)(ErtsSchedulerData *esdp, + ErtsMonotonicTime timeout_pos, + int short_time, ErtsTmrType type, + void *rcvrp, Eterm rcvr, + Eterm msg, +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + ErtsMagicBinary *mbin, +#else + Uint32 *refn, +#endif + void (*callback)(void *), void *arg); + #ifdef SMALL_MEMORY #define BIF_TIMER_PREALC_SZ 10 #define PTIMER_PREALC_SZ 10 @@ -225,7 +242,7 @@ typedef union { #endif ERTS_SCHED_PREF_PALLOC_IMPL(bif_timer_pre, - ErtsHLTimer, + ErtsBifTimer, BIF_TIMER_PREALC_SZ) ERTS_SCHED_PREF_QUICK_ALLOC_IMPL(tw_timer, @@ -296,12 +313,16 @@ struct ErtsHLTimerService_ { ErtsHLTCncldTmrQ canceled_queue; #endif ErtsHLTimer *time_tree; - ErtsHLTimer *btm_tree; +#ifndef ERTS_MAGIC_REF_BIF_TIMERS + ErtsBifTimer *btm_tree; +#endif ErtsHLTimer *next_timeout; ErtsYieldingTimeoutState yield; ErtsTWheelTimer service_timer; }; +#ifndef ERTS_MAGIC_REF_BIF_TIMERS + static ERTS_INLINE int refn_is_lt(Uint32 *x, Uint32 *y) { @@ -317,6 +338,14 @@ refn_is_lt(Uint32 *x, Uint32 *y) return x[0] < y[0]; } +static ERTS_INLINE int +refn_is_eq(Uint32 *x, Uint32 *y) +{ + return (x[0] == y[0]) & (x[1] == y[1]) & (x[2] == y[2]); +} + +#endif + #define ERTS_RBT_PREFIX time #define ERTS_RBT_T ErtsHLTimer #define ERTS_RBT_KEY_T ErtsMonotonicTime @@ -506,8 +535,16 @@ same_time_list_lookup(ErtsHLTimer *root, ErtsHLTimer *x) #endif /* ERTS_HLT_HARD_DEBUG */ +#ifdef ERTS_MAGIC_REF_BIF_TIMERS +#define ERTS_BTM_HLT2REFN(T) ((T)->btm.mbin->refn) +#else +#define ERTS_BTM_HLT2REFN(T) ((T)->btm.refn) +#endif + +#ifndef ERTS_MAGIC_REF_BIF_TIMERS + #define ERTS_RBT_PREFIX btm -#define ERTS_RBT_T ErtsHLTimer +#define ERTS_RBT_T ErtsBifTimer #define ERTS_RBT_KEY_T Uint32 * #define ERTS_RBT_FLAGS_T UWord #define ERTS_RBT_INIT_EMPTY_TNODE(T) \ @@ -533,7 +570,7 @@ same_time_list_lookup(ErtsHLTimer *root, ErtsHLTimer *x) (T)->btm.tree.parent |= (F); \ } while (0) #define ERTS_RBT_GET_PARENT(T) \ - ((ErtsHLTimer *) ((T)->btm.tree.parent & ~ERTS_HLT_PFLGS_MASK)) + ((ErtsBifTimer *) ((T)->btm.tree.parent & ~ERTS_HLT_PFLGS_MASK)) #define ERTS_RBT_SET_PARENT(T, P) \ do { \ ERTS_HLT_ASSERT((((UWord) (P)) & ERTS_HLT_PFLGS_MASK) == 0); \ @@ -544,20 +581,94 @@ same_time_list_lookup(ErtsHLTimer *root, ErtsHLTimer *x) #define ERTS_RBT_SET_RIGHT(T, R) ((T)->btm.tree.right = (R)) #define ERTS_RBT_GET_LEFT(T) ((T)->btm.tree.left) #define ERTS_RBT_SET_LEFT(T, L) ((T)->btm.tree.left = (L)) -#define ERTS_RBT_GET_KEY(T) ((T)->btm.refn) +#define ERTS_RBT_GET_KEY(T) ERTS_BTM_HLT2REFN((T)) #define ERTS_RBT_IS_LT(KX, KY) refn_is_lt((KX), (KY)) -#define ERTS_RBT_IS_EQ(KX, KY) \ - (((KX)[0] == (KY)[0]) & ((KX)[1] == (KY)[1]) & ((KX)[2] == (KY)[2])) +#define ERTS_RBT_IS_EQ(KX, KY) refn_is_eq((KX), (KY)) #define ERTS_RBT_WANT_DELETE #define ERTS_RBT_WANT_INSERT +#ifndef ERTS_MAGIC_REF_BIF_TIMERS #define ERTS_RBT_WANT_LOOKUP +#endif #define ERTS_RBT_WANT_FOREACH #define ERTS_RBT_UNDEF #include "erl_rbtree.h" +#endif /* !ERTS_MAGIC_REF_BIF_TIMERS */ + +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + +static ERTS_INLINE void +proc_btm_list_insert(ErtsBifTimer **list, ErtsBifTimer *x) +{ + ErtsBifTimer *y = *list; + if (!y) { + x->btm.proc_list.next = x; + x->btm.proc_list.prev = x; + *list = x; + } + else { + ERTS_HLT_ASSERT(y->btm.proc_list.prev->btm.proc_list.next == y); + x->btm.proc_list.next = y; + x->btm.proc_list.prev = y->btm.proc_list.prev; + y->btm.proc_list.prev->btm.proc_list.next = x; + y->btm.proc_list.prev = x; + } +} + +static ERTS_INLINE void +proc_btm_list_delete(ErtsBifTimer **list, ErtsBifTimer *x) +{ + ErtsBifTimer *y = *list; + if (y == x && x->btm.proc_list.next == x) { + ERTS_HLT_ASSERT(x->btm.proc_list.prev == x); + *list = NULL; + } + else { + if (y == x) + *list = x->btm.proc_list.next; + ERTS_HLT_ASSERT(x->btm.proc_list.prev->btm.proc_list.next == x); + ERTS_HLT_ASSERT(x->btm.proc_list.next->btm.proc_list.prev == x); + x->btm.proc_list.prev->btm.proc_list.next = x->btm.proc_list.next; + x->btm.proc_list.next->btm.proc_list.prev = x->btm.proc_list.prev; + } + x->btm.proc_list.next = NULL; +} + +static ERTS_INLINE int +proc_btm_list_foreach_destroy_yielding(ErtsBifTimer **list, + void (*destroy)(ErtsBifTimer *, void *), + void *arg, + int limit) +{ + int i; + ErtsBifTimer *first, *last; + + first = *list; + if (!first) + return 0; + + last = first->btm.proc_list.prev; + for (i = 0; i < limit; i++) { + ErtsBifTimer *x = last; + last = last->btm.proc_list.prev; + (*destroy)(x, arg); + x->btm.proc_list.next = NULL; + if (x == first) { + *list = NULL; + return 0; + } + } + + last->btm.proc_list.next = first; + first->btm.proc_list.prev = last; + return 1; +} + +#else /* !ERTS_MAGIC_REF_BIF_TIMERS */ + #define ERTS_RBT_PREFIX proc_btm -#define ERTS_RBT_T ErtsHLTimer +#define ERTS_RBT_T ErtsBifTimer #define ERTS_RBT_KEY_T Uint32 * #define ERTS_RBT_FLAGS_T UWord #define ERTS_RBT_INIT_EMPTY_TNODE(T) \ @@ -583,7 +694,7 @@ same_time_list_lookup(ErtsHLTimer *root, ErtsHLTimer *x) (T)->btm.proc_tree.parent |= (F); \ } while (0) #define ERTS_RBT_GET_PARENT(T) \ - ((ErtsHLTimer *) ((T)->btm.proc_tree.parent & ~ERTS_HLT_PFLGS_MASK)) + ((ErtsBifTimer *) ((T)->btm.proc_tree.parent & ~ERTS_HLT_PFLGS_MASK)) #define ERTS_RBT_SET_PARENT(T, P) \ do { \ ERTS_HLT_ASSERT((((UWord) (P)) & ERTS_HLT_PFLGS_MASK) == 0); \ @@ -594,71 +705,20 @@ same_time_list_lookup(ErtsHLTimer *root, ErtsHLTimer *x) #define ERTS_RBT_SET_RIGHT(T, R) ((T)->btm.proc_tree.right = (R)) #define ERTS_RBT_GET_LEFT(T) ((T)->btm.proc_tree.left) #define ERTS_RBT_SET_LEFT(T, L) ((T)->btm.proc_tree.left = (L)) -#define ERTS_RBT_GET_KEY(T) ((T)->btm.refn) +#define ERTS_RBT_GET_KEY(T) ERTS_BTM_HLT2REFN((T)) #define ERTS_RBT_IS_LT(KX, KY) refn_is_lt((KX), (KY)) -#define ERTS_RBT_IS_EQ(KX, KY) \ - (((KX)[0] == (KY)[0]) & ((KX)[1] == (KY)[1]) & ((KX)[2] == (KY)[2])) -#define ERTS_RBT_WANT_DELETE -#define ERTS_RBT_WANT_INSERT -#define ERTS_RBT_WANT_LOOKUP -#define ERTS_RBT_WANT_FOREACH_DESTROY_YIELDING -#define ERTS_RBT_UNDEF - -#include "erl_rbtree.h" - -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - -#define ERTS_RBT_PREFIX abtm -#define ERTS_RBT_T ErtsHLTimer -#define ERTS_RBT_KEY_T Uint32 * -#define ERTS_RBT_FLAGS_T UWord -#define ERTS_RBT_INIT_EMPTY_TNODE(T) \ - do { \ - (T)->abtm.tree.parent = (UWord) NULL; \ - (T)->abtm.tree.right = NULL; \ - (T)->abtm.tree.left = NULL; \ - } while (0) -#define ERTS_RBT_IS_RED(T) \ - ((int) ((T)->abtm.tree.parent & ERTS_HLT_PFLG_RED)) -#define ERTS_RBT_SET_RED(T) \ - ((T)->abtm.tree.parent |= ERTS_HLT_PFLG_RED) -#define ERTS_RBT_IS_BLACK(T) \ - (!ERTS_RBT_IS_RED((T))) -#define ERTS_RBT_SET_BLACK(T) \ - ((T)->abtm.tree.parent &= ~ERTS_HLT_PFLG_RED) -#define ERTS_RBT_GET_FLAGS(T) \ - ((T)->abtm.tree.parent & ERTS_HLT_PFLGS_MASK) -#define ERTS_RBT_SET_FLAGS(T, F) \ - do { \ - ERTS_HLT_ASSERT((((UWord) (F)) & ~ERTS_HLT_PFLGS_MASK) == 0); \ - (T)->abtm.tree.parent &= ~ERTS_HLT_PFLGS_MASK; \ - (T)->abtm.tree.parent |= (F); \ - } while (0) -#define ERTS_RBT_GET_PARENT(T) \ - ((ErtsHLTimer *) ((T)->abtm.tree.parent & ~ERTS_HLT_PFLGS_MASK)) -#define ERTS_RBT_SET_PARENT(T, P) \ - do { \ - ERTS_HLT_ASSERT((((UWord) (P)) & ERTS_HLT_PFLGS_MASK) == 0); \ - (T)->abtm.tree.parent &= ERTS_HLT_PFLGS_MASK; \ - (T)->abtm.tree.parent |= (UWord) (P); \ - } while (0) -#define ERTS_RBT_GET_RIGHT(T) ((T)->abtm.tree.right) -#define ERTS_RBT_SET_RIGHT(T, R) ((T)->abtm.tree.right = (R)) -#define ERTS_RBT_GET_LEFT(T) ((T)->abtm.tree.left) -#define ERTS_RBT_SET_LEFT(T, L) ((T)->abtm.tree.left = (L)) -#define ERTS_RBT_GET_KEY(T) ((T)->btm.refn) -#define ERTS_RBT_IS_LT(KX, KY) refn_is_lt((KX), (KY)) -#define ERTS_RBT_IS_EQ(KX, KY) \ - (((KX)[0] == (KY)[0]) & ((KX)[1] == (KY)[1]) & ((KX)[2] == (KY)[2])) +#define ERTS_RBT_IS_EQ(KX, KY) refn_is_eq((KX), (KY)) #define ERTS_RBT_WANT_DELETE #define ERTS_RBT_WANT_INSERT +#ifndef ERTS_MAGIC_REF_BIF_TIMERS #define ERTS_RBT_WANT_LOOKUP +#endif #define ERTS_RBT_WANT_FOREACH_DESTROY_YIELDING #define ERTS_RBT_UNDEF #include "erl_rbtree.h" -#endif /* ERTS_BTM_ACCESSOR_SUPPORT */ +#endif /* !ERTS_MAGIC_REF_BIF_TIMERS */ #ifdef ERTS_SMP static void init_canceled_queue(ErtsHLTCncldTmrQ *cq); @@ -680,7 +740,9 @@ erts_create_timer_service(void) srv = erts_alloc_permanent_cache_aligned(ERTS_ALC_T_TIMER_SERVICE, sizeof(ErtsHLTimerService)); srv->time_tree = NULL; +#ifndef ERTS_MAGIC_REF_BIF_TIMERS srv->btm_tree = NULL; +#endif srv->next_timeout = NULL; srv->yield = init_yield; erts_twheel_init_timer(&srv->service_timer); @@ -697,11 +759,8 @@ erts_timer_type_size(ErtsAlcType_t type) { switch (type) { case ERTS_ALC_T_LL_PTIMER: return sizeof(ErtsTWTimer); - case ERTS_ALC_T_HL_PTIMER: return ERTS_HL_PTIMER_SIZE; - case ERTS_ALC_T_BIF_TIMER: return ERTS_BIF_TIMER_SIZE; -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - case ERTS_ALC_T_ABIF_TIMER: return ERTS_ABIF_TIMER_SIZE; -#endif + case ERTS_ALC_T_HL_PTIMER: return sizeof(ErtsHLTimer); + case ERTS_ALC_T_BIF_TIMER: return sizeof(ErtsBifTimer); default: ERTS_INTERNAL_ERROR("Unknown type"); } return 0; @@ -760,6 +819,111 @@ port_timeout_common(Port *port, void *tmr) return 0; } +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + +static erts_smp_atomic_t * +mbin_to_btmref__(ErtsMagicBinary *mbin) +{ + return erts_smp_binary_to_magic_indirection((Binary *) mbin); +} + +static ERTS_INLINE void +magic_binary_init(ErtsMagicBinary *mbin, ErtsBifTimer *tmr) +{ + erts_smp_atomic_t *aptr = mbin_to_btmref__(mbin); + erts_smp_atomic_init_nob(aptr, (erts_aint_t) tmr); +} + +static ERTS_INLINE ErtsBifTimer * +magic_binary_to_btm(ErtsMagicBinary *mbin) +{ + erts_smp_atomic_t *aptr = mbin_to_btmref__(mbin); + ErtsBifTimer *tmr = (ErtsBifTimer *) erts_smp_atomic_read_nob(aptr); + ERTS_HLT_ASSERT(!tmr || tmr->btm.mbin == mbin); + return tmr; +} + +#endif /* ERTS_MAGIC_REF_BIF_TIMERS */ + +static ERTS_INLINE erts_aint_t +init_btm_specifics(ErtsSchedulerData *esdp, + ErtsBifTimer *tmr, Eterm msg, +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + ErtsMagicBinary *mbin +#else + Uint32 *refn +#endif + ) +{ + Uint hsz = is_immed(msg) ? ((Uint) 0) : size_object(msg); + int refc; + if (!hsz) { + tmr->btm.message = msg; + tmr->btm.bp = NULL; + } + else { + ErlHeapFragment *bp = new_message_buffer(hsz); + Eterm *hp = bp->mem; + tmr->btm.message = copy_struct(msg, hsz, &hp, &bp->off_heap); + tmr->btm.bp = bp; + } +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + refc = 1; + tmr->btm.mbin = mbin; + erts_refc_inc(&mbin->refc, 1); + magic_binary_init(mbin, tmr); + tmr->btm.proc_list.next = NULL; +#else + refc = 0; + tmr->btm.refn[0] = refn[0]; + tmr->btm.refn[1] = refn[1]; + tmr->btm.refn[2] = refn[2]; + + tmr->btm.proc_tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; + + btm_rbt_insert(&esdp->timer_service->btm_tree, tmr); +#endif + + erts_smp_atomic32_init_nob(&tmr->btm.state, ERTS_TMR_STATE_ACTIVE); + return refc; /* refc from magic binary... */ +} + +static void tw_bif_timer_timeout(void *vbtmp); + +static ERTS_INLINE void +timer_destroy(ErtsTimer *tmr, int twt, int btm) +{ + if (!btm) { + if (twt) + tw_timer_free(&tmr->twt); + else + erts_free(ERTS_ALC_T_HL_PTIMER, tmr); + } + else { +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + Binary *bp = (Binary *) tmr->btm.btm.mbin; + if (erts_refc_dectest(&bp->refc, 0) == 0) + erts_bin_free(bp); +#endif + if (tmr->head.roflgs & ERTS_TMR_ROFLG_PRE_ALC) + bif_timer_pre_free(&tmr->btm); + else + erts_free(ERTS_ALC_T_BIF_TIMER, &tmr->btm); + } +} + +static ERTS_INLINE void +timer_pre_dec_refc(ErtsTimer *tmr) +{ +#ifdef ERTS_HLT_DEBUG + erts_aint_t refc; + refc = erts_smp_atomic32_dec_read_nob(&tmr->head.refc); + ERTS_HLT_ASSERT(refc > 0); +#else + erts_smp_atomic32_dec_nob(&tmr->head.refc); +#endif +} + /* * Basic timer wheel timer stuff */ @@ -767,26 +931,39 @@ port_timeout_common(Port *port, void *tmr) static void scheduled_tw_timer_destroy(void *vtmr) { - tw_timer_free((ErtsTWTimer *) vtmr); + ErtsTimer * tmr = (ErtsTimer *) vtmr; + int btm = !!(tmr->head.roflgs & ERTS_TMR_ROFLG_BIF_TMR); + timer_destroy((ErtsTimer *) vtmr, 1, btm); } static void schedule_tw_timer_destroy(ErtsTWTimer *tmr) { + Uint size; /* * Reference to process/port can be * dropped at once... */ if (tmr->head.roflgs & ERTS_TMR_ROFLG_PROC) - erts_proc_dec_refc((Process *) tmr->u.p); + erts_proc_dec_refc(tmr->head.receiver.proc); else if (tmr->head.roflgs & ERTS_TMR_ROFLG_PORT) - erts_port_dec_refc((Port *) tmr->u.p); + erts_port_dec_refc(tmr->head.receiver.port); + + if (!(tmr->head.roflgs & ERTS_TMR_ROFLG_BIF_TMR)) + size = sizeof(ErtsHLTimer); + else { + /* Message buffer already dropped... */ + size = sizeof(ErtsBifTimer); +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + size += sizeof(ErtsMagicIndirectionWord); +#endif + } erts_schedule_thr_prgr_later_cleanup_op( scheduled_tw_timer_destroy, (void *) tmr, - &tmr->tw_tmr.u.cleanup, - sizeof(ErtsTWTimer)); + &tmr->u.cleanup, + size); } static ERTS_INLINE void @@ -802,7 +979,7 @@ static void tw_proc_timeout(void *vtwtp) { ErtsTWTimer *twtp = (ErtsTWTimer *) vtwtp; - Process *proc = (Process *) twtp->u.p; + Process *proc = twtp->head.receiver.proc; if (proc_timeout_common(proc, vtwtp)) tw_timer_dec_refc(twtp); tw_timer_dec_refc(twtp); @@ -812,84 +989,126 @@ static void tw_port_timeout(void *vtwtp) { ErtsTWTimer *twtp = (ErtsTWTimer *) vtwtp; - Port *port = (Port *) twtp->u.p; + Port *port = twtp->head.receiver.port; if (port_timeout_common(port, vtwtp)) tw_timer_dec_refc(twtp); tw_timer_dec_refc(twtp); } static void -tw_ptimer_cancel(void *vtwtp) -{ - tw_timer_dec_refc((ErtsTWTimer *) vtwtp); -} - -static void cancel_tw_timer(ErtsSchedulerData *esdp, ErtsTWTimer *tmr) { ERTS_HLT_ASSERT((tmr->head.roflgs & ERTS_TMR_ROFLG_SID_MASK) == (Uint32) esdp->no); - erts_twheel_cancel_timer(esdp->timer_wheel, &tmr->tw_tmr); + erts_twheel_cancel_timer(esdp->timer_wheel, &tmr->u.tw_tmr); + tw_timer_dec_refc(tmr); } static void tw_callback_timeout(void *vtwtp) { ErtsTWTimer *twtp = (ErtsTWTimer *) vtwtp; - void (*callback)(void *) = twtp->u.callback; + void (*callback)(void *) = twtp->head.receiver.callback; void *arg = twtp->head.u.arg; tw_timer_dec_refc(twtp); (*callback)(arg); } -static ErtsTWTimer * -create_tw_timer(ErtsSchedulerData *esdp, - ErtsTmrType type, void *p, - void (*callback)(void *), void *arg, - ErtsMonotonicTime timeout_pos) +static ErtsTimer * +create_tw_timer(ErtsSchedulerData *esdp, + ErtsMonotonicTime timeout_pos, + int short_time, ErtsTmrType type, + void *rcvrp, Eterm rcvr, + Eterm msg, +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + ErtsMagicBinary *mbin, +#else + Uint32 *refn, +#endif + void (*callback)(void *), void *arg) { ErtsTWTimer *tmr; void (*timeout_func)(void *); - void (*cancel_func)(void *); erts_aint32_t refc; - tmr = tw_timer_alloc(); - erts_twheel_init_timer(&tmr->tw_tmr); - - tmr->head.roflgs = (Uint32) esdp->no; - ERTS_HLT_ASSERT((tmr->head.roflgs - & ~ERTS_TMR_ROFLG_SID_MASK) == 0); + if (type != ERTS_TMR_BIF) { + tmr = tw_timer_alloc(); + tmr->head.roflgs = 0; + } + else { + if (short_time) { + tmr = (ErtsTWTimer *) bif_timer_pre_alloc(); + if (!tmr) + goto alloc_bif_timer; + tmr->head.roflgs = (ERTS_TMR_ROFLG_BIF_TMR + | ERTS_TMR_ROFLG_PRE_ALC); + } + else { + alloc_bif_timer: + tmr = (ErtsTWTimer *) erts_alloc(ERTS_ALC_T_BIF_TIMER, + sizeof(ErtsBifTimer)); + tmr->head.roflgs = ERTS_TMR_ROFLG_BIF_TMR; + } + } + + erts_twheel_init_timer(&tmr->u.tw_tmr); + tmr->head.roflgs |= (Uint32) esdp->no; + ERTS_HLT_ASSERT((((Uint32) esdp->no) + & ~ERTS_TMR_ROFLG_SID_MASK) == 0); switch (type) { case ERTS_TMR_PROC: - tmr->u.p = p; + tmr->head.receiver.proc = (Process *) rcvrp; tmr->head.roflgs |= ERTS_TMR_ROFLG_PROC; timeout_func = tw_proc_timeout; - cancel_func = tw_ptimer_cancel; - erts_proc_inc_refc((Process *) p); + erts_proc_inc_refc((Process *) rcvrp); refc = 2; break; case ERTS_TMR_PORT: - tmr->u.p = p; + tmr->head.receiver.port = (Port *) rcvrp; tmr->head.roflgs |= ERTS_TMR_ROFLG_PORT; timeout_func = tw_port_timeout; - cancel_func = tw_ptimer_cancel; - erts_port_inc_refc((Port *) p); + erts_port_inc_refc((Port *) rcvrp); refc = 2; break; case ERTS_TMR_CALLBACK: tmr->head.u.arg = arg; - tmr->u.callback = callback; + tmr->head.receiver.callback = callback; tmr->head.roflgs |= ERTS_TMR_ROFLG_CALLBACK; timeout_func = tw_callback_timeout; - cancel_func = NULL; refc = 1; break; + case ERTS_TMR_BIF: + + timeout_func = tw_bif_timer_timeout; + if (is_internal_pid(rcvr)) { + tmr->head.roflgs |= ERTS_TMR_ROFLG_PROC; + tmr->head.receiver.proc = (Process *) rcvrp; + refc = 2; + } + else { + ERTS_HLT_ASSERT(is_atom(rcvr)); + tmr->head.roflgs |= ERTS_TMR_ROFLG_REG_NAME; + tmr->head.receiver.name = (Eterm) rcvr; + refc = 1; + } + + refc += init_btm_specifics(esdp, + (ErtsBifTimer *) tmr, + msg, +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + mbin +#else + refn +#endif + ); + break; + default: ERTS_INTERNAL_ERROR("Unsupported timer type"); return NULL; @@ -898,41 +1117,24 @@ create_tw_timer(ErtsSchedulerData *esdp, erts_smp_atomic32_init_nob(&tmr->head.refc, refc); erts_twheel_set_timer(esdp->timer_wheel, - &tmr->tw_tmr, + &tmr->u.tw_tmr, timeout_func, - cancel_func, tmr, timeout_pos); - return tmr; + return (ErtsTimer *) tmr; } /* * Basic high level timer stuff */ -static ERTS_INLINE void -hl_timer_destroy(ErtsHLTimer *tmr) -{ - Uint32 roflgs = tmr->head.roflgs; - if (!(roflgs & ERTS_TMR_ROFLG_BIF_TMR)) - erts_free(ERTS_ALC_T_HL_PTIMER, tmr); - else { - if (roflgs & ERTS_TMR_ROFLG_PRE_ALC) - bif_timer_pre_free(tmr); -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - else if (roflgs & ERTS_TMR_ROFLG_ABIF_TMR) - erts_free(ERTS_ALC_T_ABIF_TIMER, tmr); -#endif - else - erts_free(ERTS_ALC_T_BIF_TIMER, tmr); - } -} - static void scheduled_hl_timer_destroy(void *vtmr) { - hl_timer_destroy((ErtsHLTimer *) vtmr); + ErtsTimer * tmr = (ErtsTimer *) vtmr; + int btm = !!(tmr->head.roflgs & ERTS_TMR_ROFLG_BIF_TMR); + timer_destroy((ErtsTimer *) vtmr, 0, btm); } static void @@ -948,25 +1150,25 @@ schedule_hl_timer_destroy(ErtsHLTimer *tmr, Uint32 roflgs) ERTS_HLT_ASSERT(erts_smp_atomic32_read_nob(&tmr->head.refc) == 0); if (roflgs & ERTS_TMR_ROFLG_REG_NAME) { - ERTS_HLT_ASSERT(is_atom(tmr->receiver.name)); + ERTS_HLT_ASSERT(is_atom(tmr->head.receiver.name)); } else if (roflgs & ERTS_TMR_ROFLG_PROC) { - ERTS_HLT_ASSERT(tmr->receiver.proc); - erts_proc_dec_refc(tmr->receiver.proc); + ERTS_HLT_ASSERT(tmr->head.receiver.proc); + erts_proc_dec_refc(tmr->head.receiver.proc); } else if (roflgs & ERTS_TMR_ROFLG_PORT) { - ERTS_HLT_ASSERT(tmr->receiver.port); - erts_port_dec_refc(tmr->receiver.port); + ERTS_HLT_ASSERT(tmr->head.receiver.port); + erts_port_dec_refc(tmr->head.receiver.port); } if (!(roflgs & ERTS_TMR_ROFLG_BIF_TMR)) - size = ERTS_HL_PTIMER_SIZE; - else { - /* - * Message buffer can be dropped at - * once... - */ size = sizeof(ErtsHLTimer); + else { + /* Message buffer already dropped... */ + size = sizeof(ErtsBifTimer); +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + size += sizeof(ErtsMagicIndirectionWord); +#endif } erts_schedule_thr_prgr_later_cleanup_op( @@ -975,18 +1177,6 @@ schedule_hl_timer_destroy(ErtsHLTimer *tmr, Uint32 roflgs) } static ERTS_INLINE void -hl_timer_pre_dec_refc(ErtsHLTimer *tmr) -{ -#ifdef ERTS_HLT_DEBUG - erts_aint_t refc; - refc = erts_smp_atomic32_dec_read_nob(&tmr->head.refc); - ERTS_HLT_ASSERT(refc > 0); -#else - erts_smp_atomic32_dec_nob(&tmr->head.refc); -#endif -} - -static ERTS_INLINE void hl_timer_dec_refc(ErtsHLTimer *tmr, Uint32 roflgs) { if (erts_smp_atomic32_dec_read_relb(&tmr->head.refc) == 0) { @@ -1018,39 +1208,135 @@ check_canceled_queue(ErtsSchedulerData *esdp, ErtsHLTimerService *srv) #endif } -#ifdef ERTS_BTM_ACCESSOR_SUPPORT +#ifdef ERTS_MAGIC_REF_BIF_TIMERS -static void -hlt_delete_abtm(ErtsHLTimer *tmr) +static int +bif_timer_ref_destructor(Binary *unused) { - Process *proc; + return 1; +} - ERTS_HLT_ASSERT(tmr->head.roflgs & ERTS_TMR_ROFLG_ABIF_TMR); +static ERTS_INLINE void +btm_clear_magic_binary(ErtsBifTimer *tmr) +{ + erts_smp_atomic_t *aptr = mbin_to_btmref__(tmr->btm.mbin); + Uint32 roflgs = tmr->type.head.roflgs; +#ifdef ERTS_HLT_DEBUG + erts_aint_t tval = erts_smp_atomic_xchg_nob(aptr, + (erts_aint_t) NULL); + ERTS_HLT_ASSERT(tval == (erts_aint_t) tmr); +#else + erts_smp_atomic_set_nob(aptr, (erts_aint_t) NULL); +#endif + if (roflgs & ERTS_TMR_ROFLG_HLT) + hl_timer_dec_refc(&tmr->type.hlt, roflgs); + else + tw_timer_dec_refc(&tmr->type.twt); +} - proc = erts_proc_lookup(tmr->abtm.accessor); +#endif /* ERTS_MAGIC_REF_BIF_TIMERS */ - if (proc) { - int deref = 0; - erts_smp_proc_lock(proc, ERTS_PROC_LOCK_BTM); - if (tmr->abtm.tree.parent != ERTS_HLT_PFIELD_NOT_IN_TABLE) { - abtm_rbt_delete(&proc->accessor_bif_timers, tmr); - deref = 1; - tmr->abtm.tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; - } - erts_smp_proc_unlock(proc, ERTS_PROC_LOCK_BTM); - if (deref) - hl_timer_pre_dec_refc(tmr); +static ERTS_INLINE void +bif_timer_timeout(ErtsHLTimerService *srv, + ErtsBifTimer *tmr, + Uint32 roflgs) +{ + erts_aint32_t state; + + ERTS_HLT_ASSERT(tmr->type.head.roflgs == roflgs); + ERTS_HLT_ASSERT(roflgs & ERTS_TMR_ROFLG_BIF_TMR); + + state = erts_smp_atomic32_cmpxchg_acqb(&tmr->btm.state, + ERTS_TMR_STATE_TIMED_OUT, + ERTS_TMR_STATE_ACTIVE); + + ERTS_HLT_ASSERT(state == ERTS_TMR_STATE_CANCELED + || state == ERTS_TMR_STATE_ACTIVE); + + if (state == ERTS_TMR_STATE_ACTIVE) { + Process *proc; + +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + btm_clear_magic_binary(tmr); +#endif + + if (roflgs & ERTS_TMR_ROFLG_REG_NAME) { + Eterm term; + term = tmr->type.head.receiver.name; + ERTS_HLT_ASSERT(is_atom(term)); + term = erts_whereis_name_to_id(NULL, term); + proc = erts_proc_lookup(term); + } + else { + ERTS_HLT_ASSERT(roflgs & ERTS_TMR_ROFLG_PROC); + proc = tmr->type.head.receiver.proc; + ERTS_HLT_ASSERT(proc); + } + if (proc) { + if (!ERTS_PROC_IS_EXITING(proc)) { + int dec_refc = 0; + ErtsMessage *mp = erts_alloc_message(0, NULL); + mp->data.heap_frag = tmr->btm.bp; + tmr->btm.bp = NULL; + erts_queue_message(proc, 0, mp, tmr->btm.message, + am_clock_service); + erts_smp_proc_lock(proc, ERTS_PROC_LOCK_BTM); +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + if (tmr->btm.proc_list.next) { + proc_btm_list_delete(&proc->bif_timers, tmr); + dec_refc = 1; + } +#else + if (tmr->btm.proc_tree.parent != ERTS_HLT_PFIELD_NOT_IN_TABLE) { + proc_btm_rbt_delete(&proc->bif_timers, tmr); + tmr->btm.proc_tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; + dec_refc = 1; + } +#endif + erts_smp_proc_unlock(proc, ERTS_PROC_LOCK_BTM); + if (dec_refc) + timer_pre_dec_refc((ErtsTimer *) tmr); + } + } + if (tmr->btm.bp) + free_message_buffer(tmr->btm.bp); } + +#ifndef ERTS_MAGIC_REF_BIF_TIMERS + if (tmr->btm.tree.parent != ERTS_HLT_PFIELD_NOT_IN_TABLE) { + btm_rbt_delete(&srv->btm_tree, tmr); + tmr->btm.tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; + } +#endif + + } +static void +tw_bif_timer_timeout(void *vbtmp) +{ +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + ErtsHLTimerService *srv = NULL; +#else + ErtsSchedulerData *esdp = erts_get_scheduler_data(); + ErtsHLTimerService *srv = esdp->timer_service; #endif + ErtsBifTimer *btmp = (ErtsBifTimer *) vbtmp; + bif_timer_timeout(srv, btmp, btmp->type.head.roflgs); + tw_timer_dec_refc(&btmp->type.twt); +} -static ErtsHLTimer * +static ErtsTimer * create_hl_timer(ErtsSchedulerData *esdp, ErtsMonotonicTime timeout_pos, int short_time, ErtsTmrType type, - void *rcvrp, Eterm rcvr, Eterm acsr, - Eterm msg, Uint32 *refn, + void *rcvrp, Eterm rcvr, + Eterm msg, +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + ErtsMagicBinary *mbin, +#else + Uint32 *refn, +#endif void (*callback)(void *), void *arg) { ErtsHLTimerService *srv = esdp->timer_service; @@ -1069,7 +1355,7 @@ create_hl_timer(ErtsSchedulerData *esdp, if (type != ERTS_TMR_BIF) { tmr = erts_alloc(ERTS_ALC_T_HL_PTIMER, - ERTS_HL_PTIMER_SIZE); + sizeof(ErtsHLTimer)); tmr->timeout = timeout_pos; switch (type) { @@ -1078,7 +1364,7 @@ create_hl_timer(ErtsSchedulerData *esdp, ERTS_HLT_ASSERT(is_internal_pid(rcvr)); erts_proc_inc_refc((Process *) rcvrp); - tmr->receiver.proc = (Process *) rcvrp; + tmr->head.receiver.proc = (Process *) rcvrp; roflgs |= ERTS_TMR_ROFLG_PROC; refc = 2; break; @@ -1086,14 +1372,14 @@ create_hl_timer(ErtsSchedulerData *esdp, case ERTS_TMR_PORT: ERTS_HLT_ASSERT(is_internal_port(rcvr)); erts_port_inc_refc((Port *) rcvrp); - tmr->receiver.port = (Port *) rcvrp; + tmr->head.receiver.port = (Port *) rcvrp; roflgs |= ERTS_TMR_ROFLG_PORT; refc = 2; break; case ERTS_TMR_CALLBACK: roflgs |= ERTS_TMR_ROFLG_CALLBACK; - tmr->receiver.callback = callback; + tmr->head.receiver.callback = callback; tmr->head.u.arg = arg; refc = 1; break; @@ -1105,84 +1391,47 @@ create_hl_timer(ErtsSchedulerData *esdp, } else { /* ERTS_TMR_BIF */ - Uint hsz; -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - int is_abif_tmr = is_value(acsr) && acsr != rcvr; -#endif if (short_time) { - tmr = bif_timer_pre_alloc(); + tmr = (ErtsHLTimer *) bif_timer_pre_alloc(); if (!tmr) goto alloc_bif_timer; roflgs |= ERTS_TMR_ROFLG_PRE_ALC; } else { alloc_bif_timer: -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - if (is_abif_tmr) - tmr = erts_alloc(ERTS_ALC_T_ABIF_TIMER, - ERTS_ABIF_TIMER_SIZE); - else -#endif - tmr = erts_alloc(ERTS_ALC_T_BIF_TIMER, - ERTS_BIF_TIMER_SIZE); - } + tmr = (ErtsHLTimer *) erts_alloc(ERTS_ALC_T_BIF_TIMER, + sizeof(ErtsBifTimer)); + } tmr->timeout = timeout_pos; roflgs |= ERTS_TMR_ROFLG_BIF_TMR; if (is_internal_pid(rcvr)) { roflgs |= ERTS_TMR_ROFLG_PROC; - tmr->receiver.proc = (Process *) rcvrp; + tmr->head.receiver.proc = (Process *) rcvrp; refc = 2; } else { ERTS_HLT_ASSERT(is_atom(rcvr)); roflgs |= ERTS_TMR_ROFLG_REG_NAME; - tmr->receiver.name = rcvr; + tmr->head.receiver.name = rcvr; refc = 1; } - hsz = is_immed(msg) ? ((Uint) 0) : size_object(msg); - if (!hsz) { - tmr->btm.message = msg; - tmr->btm.bp = NULL; - } - else { - ErlHeapFragment *bp = new_message_buffer(hsz); - Eterm *hp = bp->mem; - tmr->btm.message = copy_struct(msg, hsz, &hp, &bp->off_heap); - tmr->btm.bp = bp; - } - tmr->btm.refn[0] = refn[0]; - tmr->btm.refn[1] = refn[1]; - tmr->btm.refn[2] = refn[2]; - - tmr->btm.proc_tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; - -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - if (is_abif_tmr) { - Process *aproc; - roflgs |= ERTS_TMR_ROFLG_ABIF_TMR; - tmr->abtm.accessor = acsr; - aproc = erts_proc_lookup(acsr); - if (!aproc) - tmr->abtm.tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; - else { - refc++; - erts_smp_proc_lock(aproc, ERTS_PROC_LOCK_BTM); - abtm_rbt_insert(&aproc->accessor_bif_timers, tmr); - erts_smp_proc_unlock(aproc, ERTS_PROC_LOCK_BTM); - } - } + refc += init_btm_specifics(esdp, + (ErtsBifTimer *) tmr, + msg, +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + mbin +#else + refn #endif - - btm_rbt_insert(&srv->btm_tree, tmr); + ); } tmr->head.roflgs = roflgs; erts_smp_atomic32_init_nob(&tmr->head.refc, refc); - erts_smp_atomic32_init_nob(&tmr->state, ERTS_TMR_STATE_ACTIVE); if (!srv->next_timeout || tmr->timeout < srv->next_timeout->timeout) { @@ -1192,7 +1441,6 @@ create_hl_timer(ErtsSchedulerData *esdp, erts_twheel_set_timer(esdp->timer_wheel, &srv->service_timer, hlt_service_timeout, - NULL, (void *) esdp, tmr->timeout); srv->next_timeout = tmr; @@ -1209,79 +1457,20 @@ create_hl_timer(ErtsSchedulerData *esdp, ERTS_HLT_HDBG_CHK_SRV(srv); - return tmr; -} - -static ERTS_INLINE void -hlt_bif_timer_timeout(ErtsHLTimer *tmr, Uint32 roflgs) -{ - ErtsProcLocks proc_locks = ERTS_PROC_LOCKS_MSG_SEND; - Process *proc; - int queued_message = 0; - int dec_refc = 0; - Uint32 is_reg_name = (roflgs & ERTS_TMR_ROFLG_REG_NAME); - ERTS_HLT_ASSERT(roflgs & ERTS_TMR_ROFLG_BIF_TMR); - -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - if (tmr->head.roflgs & ERTS_TMR_ROFLG_ABIF_TMR) - hlt_delete_abtm(tmr); -#endif - - if (is_reg_name) { - Eterm pid; - ERTS_HLT_ASSERT(is_atom(tmr->receiver.name)); - pid = erts_whereis_name_to_id(NULL, tmr->receiver.name); - proc = erts_proc_lookup(pid); - } - else { - ERTS_HLT_ASSERT(roflgs & ERTS_TMR_ROFLG_PROC); - ERTS_HLT_ASSERT(tmr->receiver.proc); - - proc = tmr->receiver.proc; - proc_locks |= ERTS_PROC_LOCK_BTM; - } - if (proc) { - erts_smp_proc_lock(proc, proc_locks); - /* - * If process is exiting, let it clean up - * the btm tree by itself (it may be in - * the middle of tree destruction). - */ - if (!ERTS_PROC_IS_EXITING(proc)) { - ErtsMessage *mp = erts_alloc_message(0, NULL); - mp->data.heap_frag = tmr->btm.bp; - erts_queue_message(proc, proc_locks, mp, - tmr->btm.message, am_clock_service); - erts_smp_proc_unlock(proc, ERTS_PROC_LOCKS_MSG_SEND); - queued_message = 1; - proc_locks &= ~ERTS_PROC_LOCKS_MSG_SEND; - tmr->btm.bp = NULL; - if (tmr->btm.proc_tree.parent != ERTS_HLT_PFIELD_NOT_IN_TABLE) { - proc_btm_rbt_delete(&proc->bif_timers, tmr); - tmr->btm.proc_tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; - dec_refc = 1; - } - } - if (proc_locks) - erts_smp_proc_unlock(proc, proc_locks); - if (dec_refc) - hl_timer_pre_dec_refc(tmr); - } - if (!queued_message && tmr->btm.bp) - free_message_buffer(tmr->btm.bp); + return (ErtsTimer *) tmr; } static ERTS_INLINE void hlt_proc_timeout(ErtsHLTimer *tmr) { - if (proc_timeout_common(tmr->receiver.proc, (void *) tmr)) + if (proc_timeout_common(tmr->head.receiver.proc, (void *) tmr)) hl_timer_dec_refc(tmr, tmr->head.roflgs); } static ERTS_INLINE void hlt_port_timeout(ErtsHLTimer *tmr) { - if (port_timeout_common(tmr->receiver.port, (void *) tmr)) + if (port_timeout_common(tmr->head.receiver.port, (void *) tmr)) hl_timer_dec_refc(tmr, tmr->head.roflgs); } @@ -1289,41 +1478,24 @@ static void hlt_timeout(ErtsHLTimer *tmr, void *vsrv) { ErtsHLTimerService *srv = (ErtsHLTimerService *) vsrv; Uint32 roflgs; - erts_aint32_t state; ERTS_HLT_HDBG_CHK_SRV(srv); roflgs = tmr->head.roflgs; ERTS_HLT_ASSERT(roflgs & ERTS_TMR_ROFLG_HLT); - state = erts_smp_atomic32_cmpxchg_acqb(&tmr->state, - ERTS_TMR_STATE_TIMED_OUT, - ERTS_TMR_STATE_ACTIVE); - - ERTS_HLT_ASSERT(state == ERTS_TMR_STATE_CANCELED - || state == ERTS_TMR_STATE_ACTIVE); - - if (state == ERTS_TMR_STATE_ACTIVE) { - - if (roflgs & ERTS_TMR_ROFLG_BIF_TMR) - hlt_bif_timer_timeout(tmr, roflgs); - else if (roflgs & ERTS_TMR_ROFLG_PROC) - hlt_proc_timeout(tmr); - else if (roflgs & ERTS_TMR_ROFLG_PORT) - hlt_port_timeout(tmr); - else { - ERTS_HLT_ASSERT(roflgs & ERTS_TMR_ROFLG_CALLBACK); - (*tmr->receiver.callback)(tmr->head.u.arg); - } - + if (roflgs & ERTS_TMR_ROFLG_BIF_TMR) + bif_timer_timeout(srv, (ErtsBifTimer *) tmr, roflgs); + else if (roflgs & ERTS_TMR_ROFLG_PROC) + hlt_proc_timeout(tmr); + else if (roflgs & ERTS_TMR_ROFLG_PORT) + hlt_port_timeout(tmr); + else { + ERTS_HLT_ASSERT(roflgs & ERTS_TMR_ROFLG_CALLBACK); + (*tmr->head.receiver.callback)(tmr->head.u.arg); } tmr->time.tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; - if ((roflgs & ERTS_TMR_ROFLG_BIF_TMR) - && tmr->btm.tree.parent != ERTS_HLT_PFIELD_NOT_IN_TABLE) { - btm_rbt_delete(&srv->btm_tree, tmr); - tmr->btm.tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; - } ERTS_HLT_HDBG_CHK_SRV(srv); @@ -1390,7 +1562,6 @@ hlt_service_timeout(void *vesdp) erts_twheel_set_timer(esdp->timer_wheel, &srv->service_timer, hlt_service_timeout, - NULL, vesdp, tmr->timeout); } @@ -1402,19 +1573,6 @@ hlt_delete_timer(ErtsSchedulerData *esdp, ErtsHLTimer *tmr) ERTS_HLT_HDBG_CHK_SRV(srv); - if (tmr->head.roflgs & ERTS_TMR_ROFLG_BIF_TMR) { - - if (tmr->btm.tree.parent != ERTS_HLT_PFIELD_NOT_IN_TABLE) { - btm_rbt_delete(&srv->btm_tree, tmr); - tmr->btm.tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; - } - -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - if (tmr->head.roflgs & ERTS_TMR_ROFLG_ABIF_TMR) - hlt_delete_abtm(tmr); -#endif - } - if (tmr->time.tree.parent == ERTS_HLT_PFIELD_NOT_IN_TABLE) { /* Already removed... */ ERTS_HLT_HDBG_CHK_SRV(srv); @@ -1460,7 +1618,6 @@ hlt_delete_timer(ErtsSchedulerData *esdp, ErtsHLTimer *tmr) erts_twheel_set_timer(esdp->timer_wheel, &srv->service_timer, hlt_service_timeout, - NULL, (void *) esdp, smlst->timeout); } @@ -1485,6 +1642,17 @@ cleanup_sched_local_canceled_timer(ErtsSchedulerData *esdp, ERTS_HLT_ASSERT(esdp == erts_get_scheduler_data()); ERTS_HLT_ASSERT((tmr->head.roflgs & ERTS_TMR_ROFLG_SID_MASK) == (Uint32) esdp->no); + +#ifndef ERTS_MAGIC_REF_BIF_TIMERS + if (roflgs & ERTS_TMR_ROFLG_BIF_TMR) { + ErtsBifTimer *btm = (ErtsBifTimer *) tmr; + if (btm->btm.tree.parent != ERTS_HLT_PFIELD_NOT_IN_TABLE) { + btm_rbt_delete(&esdp->timer_service->btm_tree, btm); + btm->btm.tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; + } + } +#endif + if (roflgs & ERTS_TMR_ROFLG_HLT) { hlt_delete_timer(esdp, &tmr->hlt); hl_timer_dec_refc(&tmr->hlt, roflgs); @@ -1750,57 +1918,86 @@ continue_cancel_ptimer(ErtsSchedulerData *esdp, ErtsTimer *tmr) * BIF timer specific */ + Uint erts_bif_timer_memory_size(void) { return (Uint) 0; } static BIF_RETTYPE -setup_bif_timer(Process *c_p, ErtsMonotonicTime timeout_pos, - int short_time, Eterm rcvr, Eterm acsr, - Eterm msg, int wrap) +setup_bif_timer(Process *c_p, int twheel, ErtsMonotonicTime timeout_pos, + int short_time, Eterm rcvr, Eterm msg, int wrap) { BIF_RETTYPE ret; Eterm ref, tmo_msg, *hp; - ErtsHLTimer *tmr; + ErtsBifTimer *tmr; ErtsSchedulerData *esdp; - DeclareTmpHeap(tmp_hp, 4, c_p); +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + Binary *mbin; +#endif + Eterm tmp_hp[4]; + ErtsCreateTimerFunc create_timer; if (is_not_internal_pid(rcvr) && is_not_atom(rcvr)) goto badarg; esdp = erts_proc_sched_data(c_p); +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + mbin = erts_create_magic_indirection(bif_timer_ref_destructor); + hp = HAlloc(c_p, ERTS_MAGIC_REF_THING_SIZE); + ref = erts_mk_magic_ref(&hp, &c_p->off_heap, mbin); + ASSERT(erts_get_ref_numbers_thr_id(((ErtsMagicBinary *)mbin)->refn) + == (Uint32) esdp->no); +#else hp = HAlloc(c_p, ERTS_REF_THING_SIZE); ref = erts_sched_make_ref_in_buffer(esdp, hp); - - ASSERT(erts_get_ref_numbers_thr_id( - internal_ref_numbers(ref)) == (Uint32) esdp->no); - - UseTmpHeap(4, c_p); + ASSERT(erts_get_ref_numbers_thr_id(internal_ordinary_ref_numbers(ref)) + == (Uint32) esdp->no); +#endif tmo_msg = wrap ? TUPLE3(tmp_hp, am_timeout, ref, msg) : msg; - tmr = create_hl_timer(esdp, timeout_pos, short_time, - ERTS_TMR_BIF, NULL, rcvr, acsr, tmo_msg, - internal_ref_numbers(ref), NULL, NULL); - - UnUseTmpHeap(4, c_p); + create_timer = twheel ? create_tw_timer : create_hl_timer; + tmr = (ErtsBifTimer *) create_timer(esdp, timeout_pos, + short_time, ERTS_TMR_BIF, + NULL, rcvr, tmo_msg, +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + (ErtsMagicBinary *) mbin, +#else + internal_ordinary_ref_numbers(ref), +#endif + NULL, NULL); if (is_internal_pid(rcvr)) { Process *proc = erts_pid2proc_opt(c_p, ERTS_PROC_LOCK_MAIN, rcvr, ERTS_PROC_LOCK_BTM, ERTS_P2P_FLG_INC_REFC); if (!proc) { +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + btm_clear_magic_binary(tmr); +#else + if (tmr->btm.tree.parent != ERTS_HLT_PFIELD_NOT_IN_TABLE) { + btm_rbt_delete(&esdp->timer_service->btm_tree, tmr); + tmr->btm.tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; + } +#endif if (tmr->btm.bp) free_message_buffer(tmr->btm.bp); - hlt_delete_timer(esdp, tmr); - hl_timer_destroy(tmr); + if (twheel) + cancel_tw_timer(esdp, &tmr->type.twt); + else + hlt_delete_timer(esdp, &tmr->type.hlt); + timer_destroy((ErtsTimer *) tmr, twheel, 1); } else { +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + proc_btm_list_insert(&proc->bif_timers, tmr); +#else proc_btm_rbt_insert(&proc->bif_timers, tmr); +#endif erts_smp_proc_unlock(proc, ERTS_PROC_LOCK_BTM); - tmr->receiver.proc = proc; + tmr->type.head.receiver.proc = proc; } } @@ -1814,27 +2011,33 @@ badarg: } static int -cancel_bif_timer(ErtsHLTimer *tmr) +cancel_bif_timer(ErtsBifTimer *tmr) { erts_aint_t state; Uint32 roflgs; int res; - state = erts_smp_atomic32_cmpxchg_acqb(&tmr->state, + state = erts_smp_atomic32_cmpxchg_acqb(&tmr->btm.state, ERTS_TMR_STATE_CANCELED, ERTS_TMR_STATE_ACTIVE); if (state != ERTS_TMR_STATE_ACTIVE) return 0; +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + btm_clear_magic_binary(tmr); +#endif + if (tmr->btm.bp) free_message_buffer(tmr->btm.bp); res = -1; - roflgs = tmr->head.roflgs; + roflgs = tmr->type.head.roflgs; if (roflgs & ERTS_TMR_ROFLG_PROC) { - Process *proc = tmr->receiver.proc; - ERTS_HLT_ASSERT(!(tmr->head.roflgs & ERTS_TMR_ROFLG_REG_NAME)); + Process *proc; + + proc = tmr->type.head.receiver.proc; + ERTS_HLT_ASSERT(!(tmr->type.head.roflgs & ERTS_TMR_ROFLG_REG_NAME)); erts_smp_proc_lock(proc, ERTS_PROC_LOCK_BTM); /* @@ -1842,29 +2045,238 @@ cancel_bif_timer(ErtsHLTimer *tmr) * the btm tree by itself (it may be in * the middle of tree destruction). */ +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + if (!ERTS_PROC_IS_EXITING(proc) && tmr->btm.proc_list.next) { + proc_btm_list_delete(&proc->bif_timers, tmr); + res = 1; + } +#else if (!ERTS_PROC_IS_EXITING(proc) && tmr->btm.proc_tree.parent != ERTS_HLT_PFIELD_NOT_IN_TABLE) { proc_btm_rbt_delete(&proc->bif_timers, tmr); tmr->btm.proc_tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; res = 1; } +#endif erts_smp_proc_unlock(proc, ERTS_PROC_LOCK_BTM); } return res; } +static ERTS_INLINE Sint64 +access_btm(ErtsBifTimer *tmr, Uint32 sid, ErtsSchedulerData *esdp, int cancel) +{ + int cncl_res; + Sint64 time_left; + ErtsMonotonicTime timeout; + int is_hlt; + + if (!tmr) + return -1; + + is_hlt = !!(tmr->type.head.roflgs & ERTS_TMR_ROFLG_HLT); + timeout = (is_hlt + ? tmr->type.hlt.timeout + : erts_tweel_read_timeout(&tmr->type.twt.u.tw_tmr)); + + if (!cancel) { + erts_aint32_t state = erts_smp_atomic32_read_acqb(&tmr->btm.state); + if (state == ERTS_TMR_STATE_ACTIVE) + return get_time_left(esdp, timeout); + return -1; + } + + cncl_res = cancel_bif_timer(tmr); + if (!cncl_res) + return -1; + + time_left = get_time_left(esdp, timeout); + + if (sid != (Uint32) esdp->no) { + if (cncl_res > 0) + queue_canceled_timer(esdp, sid, (ErtsTimer *) tmr); + } + else { +#ifndef ERTS_MAGIC_REF_BIF_TIMERS + if (tmr->btm.tree.parent != ERTS_HLT_PFIELD_NOT_IN_TABLE) { + btm_rbt_delete(&esdp->timer_service->btm_tree, tmr); + tmr->btm.tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; + } +#endif + if (is_hlt) { + if (cncl_res > 0) + hl_timer_dec_refc(&tmr->type.hlt, tmr->type.hlt.head.roflgs); + hlt_delete_timer(esdp, &tmr->type.hlt); + } + else { + if (cncl_res > 0) + tw_timer_dec_refc(&tmr->type.twt); + cancel_tw_timer(esdp, &tmr->type.twt); + } + } + + return time_left; +} + +static ERTS_INLINE Eterm +return_info(Process *c_p, Sint64 time_left) +{ + Uint hsz; + Eterm *hp; + + if (time_left < 0) + return am_false; + + if (time_left <= (Sint64) MAX_SMALL) + return make_small((Sint) time_left); + + hsz = ERTS_SINT64_HEAP_SIZE(time_left); + hp = HAlloc(c_p, hsz); + return erts_sint64_to_big(time_left, &hp); +} + +static ERTS_INLINE Eterm +send_async_info(Process *proc, ErtsProcLocks initial_locks, + Eterm tref, int cancel, Sint64 time_left) +{ + ErtsProcLocks locks = initial_locks; + ErtsMessage *mp; + Eterm tag, res, msg, ref; + Uint hsz; + Eterm *hp; + ErlOffHeap *ohp; + + hsz = 4; + hsz += NC_HEAP_SIZE(tref); + + if (time_left > (Sint64) MAX_SMALL) + hsz += ERTS_SINT64_HEAP_SIZE(time_left); + + mp = erts_alloc_message_heap(proc, &locks, hsz, &hp, &ohp); + + if (cancel) + tag = am_cancel_timer; + else + tag = am_read_timer; + + ref = STORE_NC(&hp, ohp, tref); + + if (time_left < 0) + res = am_false; + else if (time_left <= (Sint64) MAX_SMALL) + res = make_small((Sint) time_left); + else + res = erts_sint64_to_big(time_left, &hp); + + msg = TUPLE3(hp, tag, ref, res); + + erts_queue_message(proc, locks, mp, msg, am_clock_service); + + locks &= ~initial_locks; + if (locks) + erts_smp_proc_unlock(proc, locks); + + return am_ok; +} + +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + +static BIF_RETTYPE +access_bif_timer(Process *c_p, Eterm tref, int cancel, int async, int info) +{ + BIF_RETTYPE ret; + Eterm res; + Sint64 time_left; + + if (!is_internal_magic_ref(tref)) { + if (is_not_ref(tref)) { + ERTS_BIF_PREP_ERROR(ret, c_p, BADARG); + return ret; + } + time_left = -1; + } + else { + ErtsMagicBinary *mbin; + mbin = (ErtsMagicBinary *) erts_magic_ref2bin(tref); + if (mbin->destructor != bif_timer_ref_destructor) + time_left = -1; + else { + ErtsBifTimer *tmr; + Uint32 sid; + tmr = magic_binary_to_btm(mbin); + sid = erts_get_ref_numbers_thr_id(internal_magic_ref_numbers(tref)); + ASSERT(1 <= sid && sid <= erts_no_schedulers); + time_left = access_btm(tmr, sid, erts_proc_sched_data(c_p), cancel); + } + } + + if (!info) + res = am_ok; + else if (!async) + res = return_info(c_p, time_left); + else + res = send_async_info(c_p, ERTS_PROC_LOCK_MAIN, + tref, cancel, time_left); + + ERTS_BIF_PREP_RET(ret, res); + + return ret; +} + +#else /* !ERTS_MAGIC_REF_BIF_TIMERS */ + +static ERTS_INLINE Eterm +send_sync_info(Process *proc, ErtsProcLocks initial_locks, + Uint32 *refn, int cancel, Sint64 time_left) +{ + ErtsProcLocks locks = initial_locks; + ErtsMessage *mp; + Eterm res, msg, ref; + Uint hsz; + Eterm *hp; + ErlOffHeap *ohp; + + hsz = 3 + ERTS_REF_THING_SIZE; + + if (time_left > (Sint64) MAX_SMALL) + hsz += ERTS_SINT64_HEAP_SIZE(time_left); + + mp = erts_alloc_message_heap(proc, &locks, hsz, &hp, &ohp); + + write_ref_thing(hp, refn[0], refn[1], refn[2]); + ref = make_internal_ref(hp); + hp += ERTS_REF_THING_SIZE; + + if (time_left < 0) + res = am_false; + else if (time_left <= (Sint64) MAX_SMALL) + res = make_small((Sint) time_left); + else + res = erts_sint64_to_big(time_left, &hp); + + msg = TUPLE2(hp, ref, res); + + erts_queue_message(proc, locks, mp, msg, am_clock_service); + + locks &= ~initial_locks; + if (locks) + erts_smp_proc_unlock(proc, locks); + + return am_ok; +} + static ERTS_INLINE Eterm access_sched_local_btm(Process *c_p, Eterm pid, - Eterm tref, Uint32 *trefn, - Uint32 *rrefn, - int async, int cancel, - int return_res, - int info) + Eterm tref, Uint32 *trefn, + Uint32 *rrefn, + int async, int cancel, + int return_res, + int info) { ErtsSchedulerData *esdp; ErtsHLTimerService *srv; - ErtsHLTimer *tmr; + ErtsBifTimer *tmr; Sint64 time_left; Process *proc; ErtsProcLocks proc_locks; @@ -1884,111 +2296,40 @@ access_sched_local_btm(Process *c_p, Eterm pid, srv = esdp->timer_service; tmr = btm_rbt_lookup(srv->btm_tree, trefn); - if (tmr) { - if (!cancel) { - erts_aint32_t state = erts_smp_atomic32_read_acqb(&tmr->state); - if (state == ERTS_TMR_STATE_ACTIVE) - time_left = get_time_left(esdp, tmr->timeout); - } - else { - int cncl_res = cancel_bif_timer(tmr); - if (cncl_res) { - - time_left = get_time_left(esdp, tmr->timeout); - if (cncl_res > 0) - hl_timer_dec_refc(tmr, tmr->head.roflgs); - - hlt_delete_timer(esdp, tmr); - } - } - } + time_left = access_btm(tmr, (Uint32) esdp->no, esdp, cancel); if (!info) - return am_ok; - - if (return_res) { - ERTS_HLT_ASSERT(c_p); - if (time_left < 0) - return am_false; - else if (time_left <= (Sint64) MAX_SMALL) - return make_small((Sint) time_left); - else { - Uint hsz = ERTS_SINT64_HEAP_SIZE(time_left); - Eterm *hp = HAlloc(c_p, hsz); - return erts_sint64_to_big(time_left, &hp); - } - } + return am_ok; if (c_p) { - proc = c_p; - proc_locks = ERTS_PROC_LOCK_MAIN; + proc = c_p; + proc_locks = ERTS_PROC_LOCK_MAIN; } else { - proc = erts_proc_lookup(pid); - proc_locks = 0; + proc = erts_proc_lookup(pid); + proc_locks = 0; } - if (proc) { - Uint hsz; - ErtsMessage *mp; - Eterm *hp, msg, ref, result; - ErlOffHeap *ohp; - Uint32 *refn; -#ifdef ERTS_HLT_DEBUG - Eterm *hp_end; -#endif - - hsz = ERTS_REF_THING_SIZE; - if (async) { - refn = trefn; /* timer ref */ - hsz += 4; /* 3-tuple */ - } - else { - refn = rrefn; /* request ref */ - hsz += 3; /* 2-tuple */ - } - - ERTS_HLT_ASSERT(refn); - - if (time_left > (Sint64) MAX_SMALL) - hsz += ERTS_SINT64_HEAP_SIZE(time_left); - - mp = erts_alloc_message_heap(proc, &proc_locks, - hsz, &hp, &ohp); - -#ifdef ERTS_HLT_DEBUG - hp_end = hp + hsz; -#endif - - if (time_left < 0) - result = am_false; - else if (time_left <= (Sint64) MAX_SMALL) - result = make_small((Sint) time_left); - else - result = erts_sint64_to_big(time_left, &hp); - - write_ref_thing(hp, - refn[0], - refn[1], - refn[2]); - ref = make_internal_ref(hp); - hp += ERTS_REF_THING_SIZE; - - msg = (async - ? TUPLE3(hp, (cancel - ? am_cancel_timer - : am_read_timer), ref, result) - : TUPLE2(hp, ref, result)); - - ERTS_HLT_ASSERT(hp + (async ? 4 : 3) == hp_end); - - erts_queue_message(proc, proc_locks, mp, msg, am_clock_service); - - if (c_p) - proc_locks &= ~ERTS_PROC_LOCK_MAIN; - if (proc_locks) - erts_smp_proc_unlock(proc, proc_locks); + if (!async) { + if (c_p) + return return_info(c_p, time_left); + + if (proc) + return send_sync_info(proc, proc_locks, + rrefn, cancel, time_left); + } + else if (proc) { + Eterm ref; + Eterm heap[ERTS_REF_THING_SIZE]; + if (is_value(tref)) + ref = tref; + else { + write_ref_thing(&heap[0], trefn[0], trefn[1], trefn[2]); + ref = make_internal_ref(&heap[0]); + } + return send_async_info(proc, proc_locks, + ref, cancel, time_left); } return am_ok; @@ -2021,108 +2362,64 @@ bif_timer_access_request(void *vreq) static int try_access_sched_remote_btm(ErtsSchedulerData *esdp, Process *c_p, Uint32 sid, - Uint32 *trefn, + Eterm tref, Uint32 *trefn, int async, int cancel, int info, Eterm *resp) { - ErtsHLTimer *tmr; + ErtsBifTimer *tmr; Sint64 time_left; ERTS_HLT_ASSERT(c_p); /* * Check if the timer is aimed at current - * process of if this process is an accessor - * of the timer... + * process... */ erts_smp_proc_lock(c_p, ERTS_PROC_LOCK_BTM); tmr = proc_btm_rbt_lookup(c_p->bif_timers, trefn); -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - if (!tmr) - tmr = abtm_rbt_lookup(c_p->accessor_bif_timers, trefn); -#endif erts_smp_proc_unlock(c_p, ERTS_PROC_LOCK_BTM); if (!tmr) return 0; - if (!cancel) { - erts_aint32_t state = erts_smp_atomic32_read_acqb(&tmr->state); - if (state == ERTS_TMR_STATE_ACTIVE) - time_left = get_time_left(esdp, tmr->timeout); - else - time_left = -1; - } - else { - int cncl_res = cancel_bif_timer(tmr); - if (!cncl_res) - time_left = -1; - else { - time_left = get_time_left(esdp, tmr->timeout); - if (cncl_res > 0) - queue_canceled_timer(esdp, sid, (ErtsTimer *) tmr); - } - } + time_left = access_btm(tmr, sid, esdp, cancel); - if (!info) { + if (!info) *resp = am_ok; - return 1; - } - - if (!async) { - if (time_left < 0) - *resp = am_false; - else if (time_left <= (Sint64) MAX_SMALL) - *resp = make_small((Sint) time_left); - else { - Uint hsz = ERTS_SINT64_HEAP_SIZE(time_left); - Eterm *hp = HAlloc(c_p, hsz); - *resp = erts_sint64_to_big(time_left, &hp); - } - } - else { - ErtsMessage *mp; - Eterm tag, res, msg, tref; - Uint hsz; - Eterm *hp; - ErtsProcLocks proc_locks = ERTS_PROC_LOCK_MAIN; - ErlOffHeap *ohp; - - hsz = 4 + ERTS_REF_THING_SIZE; - if (time_left > (Sint64) MAX_SMALL) - hsz += ERTS_SINT64_HEAP_SIZE(time_left); - - mp = erts_alloc_message_heap(c_p, &proc_locks, - hsz, &hp, &ohp); - if (cancel) - tag = am_cancel_timer; - else - tag = am_read_timer; - - write_ref_thing(hp, - trefn[0], - trefn[1], - trefn[2]); - tref = make_internal_ref(hp); - hp += ERTS_REF_THING_SIZE; - - if (time_left < 0) - res = am_false; - else if (time_left <= (Sint64) MAX_SMALL) - res = make_small((Sint) time_left); - else - res = erts_sint64_to_big(time_left, &hp); - - msg = TUPLE3(hp, tag, tref, res); + else if (!async) + *resp = return_info(c_p, time_left); + else + *resp = send_async_info(c_p, ERTS_PROC_LOCK_MAIN, + tref, cancel, time_left); - erts_queue_message(c_p, proc_locks, mp, msg, am_clock_service); + return 1; +} - proc_locks &= ~ERTS_PROC_LOCK_MAIN; - if (proc_locks) - erts_smp_proc_unlock(c_p, proc_locks); +static Eterm +no_timer_result(Process *c_p, Eterm tref, int cancel, int async, int info) +{ + ErtsMessage *mp; + Uint hsz; + Eterm *hp, msg, ref, tag; + ErlOffHeap *ohp; + ErtsProcLocks locks; - *resp = am_ok; - } - return 1; + if (!async) + return am_false; + if (!info) + return am_ok; + + hsz = 4; + hsz += NC_HEAP_SIZE(tref); + locks = ERTS_PROC_LOCK_MAIN; + mp = erts_alloc_message_heap(c_p, &locks, hsz, &hp, &ohp); + ref = STORE_NC(&hp, ohp, tref); + tag = cancel ? am_cancel_timer : am_read_timer; + msg = TUPLE3(hp, tag, ref, am_false); + erts_queue_message(c_p, locks, mp, msg, am_clock_service); + locks &= ~ERTS_PROC_LOCK_MAIN; + if (locks) + erts_smp_proc_unlock(c_p, locks); + return am_ok; } static BIF_RETTYPE @@ -2156,7 +2453,7 @@ access_bif_timer(Process *c_p, Eterm tref, int cancel, int async, int info) ERTS_BIF_PREP_RET(ret, res); } else if (try_access_sched_remote_btm(esdp, c_p, - sid, trefn, + sid, tref, trefn, async, cancel, info, &res)) { ERTS_BIF_PREP_RET(ret, res); @@ -2235,11 +2532,11 @@ badarg: return ret; no_timer: - ERTS_BIF_PREP_RET(ret, am_false); - return ret; - + return no_timer_result(c_p, tref, cancel, async, info); } +#endif /* !ERTS_MAGIC_REF_BIF_TIMERS */ + static ERTS_INLINE int bool_arg(Eterm val, int *argp) { @@ -2251,8 +2548,8 @@ bool_arg(Eterm val, int *argp) } static ERTS_INLINE int -parse_bif_timer_options(Eterm option_list, int *async, int *info, - int *abs, Eterm *accessor) +parse_bif_timer_options(Eterm option_list, int *async, + int *info, int *abs) { Eterm list = option_list; @@ -2262,8 +2559,6 @@ parse_bif_timer_options(Eterm option_list, int *async, int *info, *info = 1; if (abs) *abs = 0; - if (accessor) - *accessor = THE_NON_VALUE; while (is_list(list)) { Eterm *consp, *tp, opt; @@ -2290,13 +2585,6 @@ parse_bif_timer_options(Eterm option_list, int *async, int *info, if (!abs || !bool_arg(tp[2], abs)) return 0; break; -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - case am_accessor: - if (!accessor || is_not_internal_pid(tp[2])) - return 0; - *accessor = tp[2]; - break; -#endif default: return 0; } @@ -2310,42 +2598,57 @@ parse_bif_timer_options(Eterm option_list, int *async, int *info, } static void -exit_cancel_bif_timer(ErtsHLTimer *tmr, void *vesdp) +exit_cancel_bif_timer(ErtsBifTimer *tmr, void *vesdp) { ErtsSchedulerData *esdp = (ErtsSchedulerData *) vesdp; Uint32 sid, roflgs; erts_aint_t state; + int is_hlt; - state = erts_smp_atomic32_cmpxchg_acqb(&tmr->state, + state = erts_smp_atomic32_cmpxchg_acqb(&tmr->btm.state, ERTS_TMR_STATE_CANCELED, ERTS_TMR_STATE_ACTIVE); - roflgs = tmr->head.roflgs; + roflgs = tmr->type.head.roflgs; sid = roflgs & ERTS_TMR_ROFLG_SID_MASK; + is_hlt = !!(roflgs & ERTS_TMR_ROFLG_HLT); - ERTS_HLT_ASSERT(sid == erts_get_ref_numbers_thr_id(tmr->btm.refn)); + ERTS_HLT_ASSERT(sid == erts_get_ref_numbers_thr_id(ERTS_BTM_HLT2REFN(tmr))); +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + ERTS_HLT_ASSERT(tmr->btm.proc_list.next); +#else ERTS_HLT_ASSERT(tmr->btm.proc_tree.parent != ERTS_HLT_PFIELD_NOT_IN_TABLE); - tmr->btm.proc_tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; +#endif - if (sid == (Uint32) esdp->no) { - if (state == ERTS_TMR_STATE_ACTIVE) { - if (tmr->btm.bp) - free_message_buffer(tmr->btm.bp); - hlt_delete_timer(esdp, tmr); - } - hl_timer_dec_refc(tmr, roflgs); - } - else { - if (state == ERTS_TMR_STATE_ACTIVE) { - if (tmr->btm.bp) - free_message_buffer(tmr->btm.bp); - queue_canceled_timer(esdp, sid, (ErtsTimer *) tmr); + if (state == ERTS_TMR_STATE_ACTIVE) { +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + btm_clear_magic_binary(tmr); +#endif + if (tmr->btm.bp) + free_message_buffer(tmr->btm.bp); + + if (sid != (Uint32) esdp->no) { + queue_canceled_timer(esdp, sid, (ErtsTimer *) tmr); + return; + } + +#ifndef ERTS_MAGIC_REF_BIF_TIMERS + if (tmr->btm.tree.parent != ERTS_HLT_PFIELD_NOT_IN_TABLE) { + btm_rbt_delete(&esdp->timer_service->btm_tree, tmr); + tmr->btm.tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; } - else - hl_timer_dec_refc(tmr, roflgs); +#endif + if (is_hlt) + hlt_delete_timer(esdp, &tmr->type.hlt); + else + cancel_tw_timer(esdp, &tmr->type.twt); } + if (is_hlt) + hl_timer_dec_refc(&tmr->type.hlt, roflgs); + else + tw_timer_dec_refc(&tmr->type.twt); } #ifdef ERTS_HLT_DEBUG @@ -2354,20 +2657,29 @@ exit_cancel_bif_timer(ErtsHLTimer *tmr, void *vesdp) # define ERTS_BTM_MAX_DESTROY_LIMIT 50 #endif +#ifndef ERTS_MAGIC_REF_BIF_TIMERS typedef struct { ErtsBifTimers *bif_timers; union { proc_btm_rbt_yield_state_t proc_btm_yield_state; -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - abtm_rbt_yield_state_t abtm_yield_state; -#endif } u; } ErtsBifTimerYieldState; +#endif -int erts_cancel_bif_timers(Process *p, ErtsBifTimers *btm, void **vyspp) +int erts_cancel_bif_timers(Process *p, ErtsBifTimers **btm, void **vyspp) { ErtsSchedulerData *esdp = erts_proc_sched_data(p); - ErtsBifTimerYieldState ys = {btm, {ERTS_RBT_YIELD_STAT_INITER}}; + +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + + return proc_btm_list_foreach_destroy_yielding(btm, + exit_cancel_bif_timer, + (void *) esdp, + ERTS_BTM_MAX_DESTROY_LIMIT); + +#else /* !ERTS_MAGIC_REF_BIF_TIMERS */ + + ErtsBifTimerYieldState ys = {*btm, {ERTS_RBT_YIELD_STAT_INITER}}; ErtsBifTimerYieldState *ysp; int res; @@ -2399,63 +2711,18 @@ int erts_cancel_bif_timers(Process *p, ErtsBifTimers *btm, void **vyspp) } return res; -} - -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - -static void -detach_bif_timer(ErtsHLTimer *tmr, void *vesdp) -{ - tmr->abtm.tree.parent = ERTS_HLT_PFIELD_NOT_IN_TABLE; - hl_timer_dec_refc(tmr, tmr->head.roflgs); -} - -int erts_detach_accessor_bif_timers(Process *p, ErtsBifTimers *btm, void **vyspp) -{ - ErtsSchedulerData *esdp = erts_proc_sched_data(p); - ErtsBifTimerYieldState ys = {btm, {ERTS_RBT_YIELD_STAT_INITER}}; - ErtsBifTimerYieldState *ysp; - int res; - - ysp = (ErtsBifTimerYieldState *) *vyspp; - if (!ysp) - ysp = &ys; - - res = abtm_rbt_foreach_destroy_yielding(&ysp->bif_timers, - detach_bif_timer, - (void *) esdp, - &ysp->u.abtm_yield_state, - ERTS_BTM_MAX_DESTROY_LIMIT); - - if (res == 0) { - if (ysp != &ys) - erts_free(ERTS_ALC_T_BTM_YIELD_STATE, ysp); - *vyspp = NULL; - } - else { - - if (ysp == &ys) { - ysp = erts_alloc(ERTS_ALC_T_BTM_YIELD_STATE, - sizeof(ErtsBifTimerYieldState)); - sys_memcpy((void *) ysp, (void *) &ys, - sizeof(ErtsBifTimerYieldState)); - } - - *vyspp = (void *) ysp; - } - return res; +#endif /* !ERTS_MAGIC_REF_BIF_TIMERS */ } -#endif /* ERTS_BTM_ACCESSOR_SUPPORT */ - static ERTS_INLINE int parse_timeout_pos(ErtsSchedulerData *esdp, Eterm arg, ErtsMonotonicTime *conv_arg, int abs, - ErtsMonotonicTime *tposp, int *stimep) + ErtsMonotonicTime *tposp, int *stimep, + ErtsMonotonicTime *msp) { - ErtsMonotonicTime t; - + ErtsMonotonicTime t, now; + if (!term_to_Sint64(arg, &t)) { ERTS_HLT_ASSERT(!is_small(arg)); if (!is_big(arg)) @@ -2470,22 +2737,30 @@ parse_timeout_pos(ErtsSchedulerData *esdp, Eterm arg, if (conv_arg) *conv_arg = t; + now = erts_get_monotonic_time(esdp); + if (abs) { t += -1*ERTS_MONOTONIC_OFFSET_MSEC; /* external to internal */ if (t < ERTS_MONOTONIC_TO_MSEC(ERTS_MONOTONIC_BEGIN)) return 1; if (t > ERTS_MONOTONIC_TO_MSEC(ERTS_MONOTONIC_END)) return 1; + if (msp) + *msp = t - ERTS_MONOTONIC_TO_MSEC(now); + *stimep = (t - ERTS_MONOTONIC_TO_MSEC(esdp->last_monotonic_time) < ERTS_BIF_TIMER_SHORT_TIME); *tposp = ERTS_MSEC_TO_CLKTCKS(t); } else { - ErtsMonotonicTime now, ticks; + ErtsMonotonicTime ticks; if (t < 0) return -1; + if (msp) + *msp = t; + ticks = ERTS_MSEC_TO_CLKTCKS(t); if (ERTS_CLKTCK_RESOLUTION > 1000 && ticks < 0) @@ -2493,7 +2768,6 @@ parse_timeout_pos(ErtsSchedulerData *esdp, Eterm arg, ERTS_HLT_ASSERT(ticks >= 0); - now = erts_get_monotonic_time(esdp); ticks += ERTS_MONOTONIC_TO_CLKTCKS(now-1); ticks += 1; @@ -2516,66 +2790,68 @@ parse_timeout_pos(ErtsSchedulerData *esdp, Eterm arg, BIF_RETTYPE send_after_3(BIF_ALIST_3) { - ErtsMonotonicTime timeout_pos; + ErtsMonotonicTime timeout_pos, tmo; int short_time, tres; - tres = parse_timeout_pos(erts_proc_sched_data(BIF_P), BIF_ARG_1, NULL, - 0, &timeout_pos, &short_time); + tres = parse_timeout_pos(erts_proc_sched_data(BIF_P), BIF_ARG_1, + NULL, 0, &timeout_pos, &short_time, &tmo); if (tres != 0) BIF_ERROR(BIF_P, BADARG); - return setup_bif_timer(BIF_P, timeout_pos, short_time, - BIF_ARG_2, BIF_ARG_2, BIF_ARG_3, 0); + return setup_bif_timer(BIF_P, tmo < ERTS_TIMER_WHEEL_MSEC, + timeout_pos, short_time, BIF_ARG_2, + BIF_ARG_3, 0); } BIF_RETTYPE send_after_4(BIF_ALIST_4) { - ErtsMonotonicTime timeout_pos; - Eterm accessor; + ErtsMonotonicTime timeout_pos, tmo; int short_time, abs, tres; - if (!parse_bif_timer_options(BIF_ARG_4, NULL, NULL, &abs, &accessor)) + if (!parse_bif_timer_options(BIF_ARG_4, NULL, NULL, &abs)) BIF_ERROR(BIF_P, BADARG); tres = parse_timeout_pos(erts_proc_sched_data(BIF_P), BIF_ARG_1, NULL, - abs, &timeout_pos, &short_time); + abs, &timeout_pos, &short_time, &tmo); if (tres != 0) BIF_ERROR(BIF_P, BADARG); - return setup_bif_timer(BIF_P, timeout_pos, short_time, - BIF_ARG_2, accessor, BIF_ARG_3, 0); + return setup_bif_timer(BIF_P, tmo < ERTS_TIMER_WHEEL_MSEC, + timeout_pos, short_time, BIF_ARG_2, + BIF_ARG_3, 0); } BIF_RETTYPE start_timer_3(BIF_ALIST_3) { - ErtsMonotonicTime timeout_pos; + ErtsMonotonicTime timeout_pos, tmo; int short_time, tres; tres = parse_timeout_pos(erts_proc_sched_data(BIF_P), BIF_ARG_1, NULL, - 0, &timeout_pos, &short_time); + 0, &timeout_pos, &short_time, &tmo); if (tres != 0) BIF_ERROR(BIF_P, BADARG); - return setup_bif_timer(BIF_P, timeout_pos, short_time, - BIF_ARG_2, BIF_ARG_2, BIF_ARG_3, !0); + return setup_bif_timer(BIF_P, tmo < ERTS_TIMER_WHEEL_MSEC, + timeout_pos, short_time, BIF_ARG_2, + BIF_ARG_3, !0); } BIF_RETTYPE start_timer_4(BIF_ALIST_4) { - ErtsMonotonicTime timeout_pos; - Eterm accessor; + ErtsMonotonicTime timeout_pos, tmo; int short_time, abs, tres; - if (!parse_bif_timer_options(BIF_ARG_4, NULL, NULL, &abs, &accessor)) + if (!parse_bif_timer_options(BIF_ARG_4, NULL, NULL, &abs)) BIF_ERROR(BIF_P, BADARG); tres = parse_timeout_pos(erts_proc_sched_data(BIF_P), BIF_ARG_1, NULL, - abs, &timeout_pos, &short_time); + abs, &timeout_pos, &short_time, &tmo); if (tres != 0) BIF_ERROR(BIF_P, BADARG); - return setup_bif_timer(BIF_P, timeout_pos, short_time, - BIF_ARG_2, accessor, BIF_ARG_3, !0); + return setup_bif_timer(BIF_P, tmo < ERTS_TIMER_WHEEL_MSEC, + timeout_pos, short_time, BIF_ARG_2, + BIF_ARG_3, !0); } BIF_RETTYPE cancel_timer_1(BIF_ALIST_1) @@ -2588,7 +2864,7 @@ BIF_RETTYPE cancel_timer_2(BIF_ALIST_2) BIF_RETTYPE ret; int async, info; - if (parse_bif_timer_options(BIF_ARG_2, &async, &info, NULL, NULL)) + if (parse_bif_timer_options(BIF_ARG_2, &async, &info, NULL)) return access_bif_timer(BIF_P, BIF_ARG_1, 1, async, info); ERTS_BIF_PREP_ERROR(ret, BIF_P, BADARG); @@ -2605,7 +2881,7 @@ BIF_RETTYPE read_timer_2(BIF_ALIST_2) BIF_RETTYPE ret; int async; - if (parse_bif_timer_options(BIF_ARG_2, &async, NULL, NULL, NULL)) + if (parse_bif_timer_options(BIF_ARG_2, &async, NULL, NULL)) return access_bif_timer(BIF_P, BIF_ARG_1, 0, async, 1); ERTS_BIF_PREP_ERROR(ret, BIF_P, BADARG); @@ -2620,14 +2896,13 @@ start_callback_timer(ErtsSchedulerData *esdp, void *arg) { - if (twt) - create_tw_timer(esdp, ERTS_TMR_CALLBACK, NULL, - callback, arg, timeout_pos); - else - create_hl_timer(esdp, timeout_pos, 0, - ERTS_TMR_CALLBACK, NULL, - NIL, THE_NON_VALUE, NIL, - NULL, callback, arg); + ErtsCreateTimerFunc create_timer = (twt + ? create_tw_timer + : create_hl_timer); + (void) create_timer(esdp, timeout_pos, 0, + ERTS_TMR_CALLBACK, NULL, + NIL, THE_NON_VALUE, NULL, + callback, arg); } typedef struct { @@ -2704,18 +2979,18 @@ set_proc_timer_common(Process *c_p, ErtsSchedulerData *esdp, Sint64 tmo, if (tmo == 0) c_p->flags |= F_TIMO; else { + ErtsCreateTimerFunc create_timer; c_p->flags |= F_INSLPQUEUE; c_p->flags &= ~F_TIMO; - if (tmo < ERTS_TIMER_WHEEL_MSEC) - tmr = (void *) create_tw_timer(esdp, ERTS_TMR_PROC, (void *) c_p, - NULL, NULL, timeout_pos); - else - tmr = (void *) create_hl_timer(esdp, timeout_pos, short_time, - ERTS_TMR_PROC, (void *) c_p, - c_p->common.id, THE_NON_VALUE, - NIL, NULL, NULL, NULL); + create_timer = (tmo < ERTS_TIMER_WHEEL_MSEC + ? create_tw_timer + : create_hl_timer); + tmr = (void *) create_timer(esdp, timeout_pos, short_time, + ERTS_TMR_PROC, (void *) c_p, + c_p->common.id, THE_NON_VALUE, + NULL, NULL, NULL); erts_smp_atomic_set_relb(&c_p->common.timer, (erts_aint_t) tmr); } } @@ -2731,7 +3006,7 @@ erts_set_proc_timer_term(Process *c_p, Eterm etmo) == ERTS_PTMR_NONE); tres = parse_timeout_pos(esdp, etmo, &tmo, 0, - &timeout_pos, &short_time); + &timeout_pos, &short_time, NULL); if (tres != 0) return tres; @@ -2789,6 +3064,7 @@ erts_set_port_timer(Port *c_prt, Sint64 tmo) void *tmr; ErtsSchedulerData *esdp = erts_get_scheduler_data(); ErtsMonotonicTime timeout_pos; + ErtsCreateTimerFunc create_timer; if (erts_smp_atomic_read_nob(&c_prt->common.timer) != ERTS_PTMR_NONE) erts_cancel_port_timer(c_prt); @@ -2797,13 +3073,12 @@ erts_set_port_timer(Port *c_prt, Sint64 tmo) timeout_pos = get_timeout_pos(erts_get_monotonic_time(esdp), tmo); - if (tmo < ERTS_TIMER_WHEEL_MSEC) - tmr = (void *) create_tw_timer(esdp, ERTS_TMR_PORT, (void *) c_prt, - NULL, NULL, timeout_pos); - else - tmr = (void *) create_hl_timer(esdp, timeout_pos, 0, ERTS_TMR_PORT, - (void *) c_prt, c_prt->common.id, - THE_NON_VALUE, NIL, NULL, NULL, NULL); + create_timer = (tmo < ERTS_TIMER_WHEEL_MSEC + ? create_tw_timer + : create_hl_timer); + tmr = (void *) create_timer(esdp, timeout_pos, 0, ERTS_TMR_PORT, + (void *) c_prt, c_prt->common.id, + THE_NON_VALUE, NULL, NULL, NULL); erts_smp_atomic_set_relb(&c_prt->common.timer, (erts_aint_t) tmr); } @@ -2842,7 +3117,7 @@ erts_read_port_timer(Port *c_prt) if (tmr->head.roflgs & ERTS_TMR_ROFLG_HLT) timeout_pos = tmr->hlt.timeout; else - timeout_pos = tmr->twt.tw_tmr.timeout_pos; + timeout_pos = erts_tweel_read_timeout(&tmr->twt.u.tw_tmr); return get_time_left(NULL, timeout_pos); } @@ -2857,20 +3132,35 @@ typedef struct { } ErtsBTMPrint; static void -btm_print(ErtsHLTimer *tmr, void *vbtmp) +btm_print(ErtsBifTimer *tmr, void *vbtmp, ErtsMonotonicTime tpos, int is_hlt) { ErtsBTMPrint *btmp = (ErtsBTMPrint *) vbtmp; ErtsMonotonicTime left; Eterm receiver; - if (tmr->timeout <= btmp->now) - left = 0; - else - left = ERTS_CLKTCKS_TO_MSEC(tmr->timeout - btmp->now); +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + if (!(tmr->type.head.roflgs & ERTS_TMR_ROFLG_BIF_TMR)) + return; +#endif - receiver = ((tmr->head.roflgs & ERTS_TMR_ROFLG_REG_NAME) - ? tmr->receiver.name - : tmr->receiver.proc->common.id); + if (is_hlt) { + ERTS_HLT_ASSERT(tmr->type.head.roflgs & ERTS_TMR_ROFLG_HLT); + if (tmr->type.hlt.timeout <= btmp->now) + left = 0; + else + left = ERTS_CLKTCKS_TO_MSEC(tmr->type.hlt.timeout - btmp->now); + } + else { + ERTS_HLT_ASSERT(!(tmr->type.head.roflgs & ERTS_TMR_ROFLG_HLT)); + if (tpos <= btmp->now) + left = 0; + else + left = ERTS_CLKTCKS_TO_MSEC(tpos - btmp->now); + } + + receiver = ((tmr->type.head.roflgs & ERTS_TMR_ROFLG_REG_NAME) + ? tmr->type.head.receiver.name + : tmr->type.head.receiver.proc->common.id); erts_print(btmp->to, btmp->to_arg, "=timer:%T\n" @@ -2881,6 +3171,36 @@ btm_print(ErtsHLTimer *tmr, void *vbtmp) (Sint64) left); } +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + +static void +hlt_btm_print(ErtsHLTimer *tmr, void *vbtmp) +{ + btm_print((ErtsBifTimer *) tmr, vbtmp, 0, 1); +} + +static void +twt_btm_print(void *vbtmp, ErtsMonotonicTime tpos, void *vtwtp) +{ + btm_print((ErtsBifTimer *) vtwtp, vbtmp, tpos, 0); +} + +#else + +static void +btm_tree_print(ErtsBifTimer *tmr, void *vbtmp) +{ + int is_hlt = !!(tmr->type.head.roflgs & ERTS_TMR_ROFLG_HLT); + ErtsMonotonicTime tpos; + if (is_hlt) + tpos = 0; + else + tpos = erts_tweel_read_timeout(&tmr->type.twt.u.tw_tmr); + btm_print(tmr, vbtmp, tpos, is_hlt); +} + +#endif + void erts_print_bif_timer_info(fmtfn_t to, void *to_arg) { @@ -2898,7 +3218,15 @@ erts_print_bif_timer_info(fmtfn_t to, void *to_arg) for (six = 0; six < erts_no_schedulers; six++) { ErtsHLTimerService *srv = erts_aligned_scheduler_data[six].esd.timer_service; - btm_rbt_foreach(srv->btm_tree, btm_print, (void *) &btmp); +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + ErtsTimerWheel *twheel = + erts_aligned_scheduler_data[six].esd.timer_wheel; + erts_twheel_debug_foreach(twheel, tw_bif_timer_timeout, + twt_btm_print, (void *) &btmp); + time_rbt_foreach(srv->time_tree, hlt_btm_print, (void *) &btmp); +#else + btm_rbt_foreach(srv->btm_tree, btm_tree_print, (void *) &btmp); +#endif } } @@ -2911,19 +3239,37 @@ typedef struct { } ErtsBTMForeachDebug; static void -debug_btm_foreach(ErtsHLTimer *tmr, void *vbtmfd) +debug_btm_foreach(ErtsBifTimer *tmr, void *vbtmfd) { - if (erts_smp_atomic32_read_nob(&tmr->state) == ERTS_TMR_STATE_ACTIVE) { +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + if (!(tmr->type.head.roflgs & ERTS_TMR_ROFLG_BIF_TMR)) + return; +#endif + if (erts_smp_atomic32_read_nob(&tmr->btm.state) == ERTS_TMR_STATE_ACTIVE) { ErtsBTMForeachDebug *btmfd = (ErtsBTMForeachDebug *) vbtmfd; - (*btmfd->func)(((tmr->head.roflgs & ERTS_TMR_ROFLG_REG_NAME) - ? tmr->receiver.name - : tmr->receiver.proc->common.id), - tmr->btm.message, - tmr->btm.bp, - btmfd->arg); + Eterm id = ((tmr->type.head.roflgs & ERTS_TMR_ROFLG_REG_NAME) + ? tmr->type.head.receiver.name + : tmr->type.head.receiver.proc->common.id); + (*btmfd->func)(id, tmr->btm.message, tmr->btm.bp, btmfd->arg); } } +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + +static void +hlt_debug_btm_foreach(ErtsHLTimer *tmr, void *vbtmfd) +{ + debug_btm_foreach((ErtsBifTimer *) tmr, vbtmfd); +} + +static void +twt_debug_btm_foreach(void *vbtmfd, ErtsMonotonicTime tpos, void *vtwtp) +{ + debug_btm_foreach((ErtsBifTimer *) vtwtp, vbtmfd); +} + +#endif + void erts_debug_bif_timer_foreach(void (*func)(Eterm, Eterm, @@ -2943,9 +3289,20 @@ erts_debug_bif_timer_foreach(void (*func)(Eterm, for (six = 0; six < erts_no_schedulers; six++) { ErtsHLTimerService *srv = erts_aligned_scheduler_data[six].esd.timer_service; +#ifdef ERTS_MAGIC_REF_BIF_TIMERS + ErtsTimerWheel *twheel = + erts_aligned_scheduler_data[six].esd.timer_wheel; + erts_twheel_debug_foreach(twheel, tw_bif_timer_timeout, + twt_debug_btm_foreach, + (void *) &btmfd); + time_rbt_foreach(srv->time_tree, + hlt_debug_btm_foreach, + (void *) &btmfd); +#else btm_rbt_foreach(srv->btm_tree, debug_btm_foreach, (void *) &btmfd); +#endif } } @@ -2964,7 +3321,7 @@ debug_callback_timer_foreach_list(ErtsHLTimer *tmr, void *vdfct) = (ErtsDebugForeachCallbackTimer *) vdfct; if ((tmr->head.roflgs & ERTS_TMR_ROFLG_CALLBACK) - && (tmr->receiver.callback == dfct->tclbk)) + && (tmr->head.receiver.callback == dfct->tclbk)) (*dfct->func)(dfct->arg, tmr->timeout, tmr->head.u.arg); @@ -2982,7 +3339,7 @@ debug_callback_timer_foreach(ErtsHLTimer *tmr, void *vdfct) vdfct); if ((tmr->head.roflgs & ERTS_TMR_ROFLG_CALLBACK) - && (tmr->receiver.callback == dfct->tclbk)) + && (tmr->head.receiver.callback == dfct->tclbk)) (*dfct->func)(dfct->arg, tmr->timeout, tmr->head.u.arg); @@ -2997,7 +3354,7 @@ debug_tw_callback_timer(void *vdfct, ErtsDebugForeachCallbackTimer *dfct = (ErtsDebugForeachCallbackTimer *) vdfct; - if (twtp->u.callback == dfct->tclbk) + if (twtp->head.receiver.callback == dfct->tclbk) (*dfct->func)(dfct->arg, timeout_pos, twtp->head.u.arg); @@ -3068,7 +3425,9 @@ st_hdbg_func(ErtsHLTimer *tmr, void *vhdbg) } ERTS_HLT_ASSERT(tmr->time.tree.u.l.next->time.tree.u.l.prev == tmr); ERTS_HLT_ASSERT(tmr->time.tree.u.l.prev->time.tree.u.l.next == tmr); - ERTS_HLT_ASSERT(btm_rbt_lookup(hdbg->srv->btm_tree, tmr->btm.refn) == tmr); +#ifndef ERTS_MAGIC_REF_BIF_TIMERS + ERTS_HLT_ASSERT(btm_rbt_lookup(hdbg->srv->btm_tree, ERTS_BTM_HLT2REFN(tmr)) == tmr); +#endif } static void @@ -3097,8 +3456,10 @@ tt_hdbg_func(ErtsHLTimer *tmr, void *vhdbg) & ~ERTS_HLT_PFLGS_MASK); ERTS_HLT_ASSERT(tmr == prnt); } +#ifndef ERTS_MAGIC_REF_BIF_TIMERS if (tmr->head.roflgs & ERTS_TMR_ROFLG_BIF_TMR) - ERTS_HLT_ASSERT(btm_rbt_lookup(hdbg->srv->btm_tree, tmr->btm.refn) == tmr); + ERTS_HLT_ASSERT(btm_rbt_lookup(hdbg->srv->btm_tree, ERTS_BTM_HLT2REFN(tmr)) == tmr); +#endif if (tmr->time.tree.same_time) { ErtsHdbgHLT st_hdbg; st_hdbg.srv = hdbg->srv; @@ -3164,6 +3525,7 @@ hdbg_chk_srv(ErtsHLTimerService *srv) time_rbt_foreach(srv->time_tree, tt_hdbg_func, (void *) &hdbg); ERTS_HLT_ASSERT(hdbg.found_root); } +#ifndef ERTS_MAGIC_REF_BIF_TIMERS if (srv->btm_tree) { ErtsHdbgHLT hdbg; hdbg.srv = srv; @@ -3172,6 +3534,7 @@ hdbg_chk_srv(ErtsHLTimerService *srv) btm_rbt_foreach(srv->btm_tree, bt_hdbg_func, (void *) &hdbg); ERTS_HLT_ASSERT(hdbg.found_root); } +#endif } #endif /* ERTS_HLT_HARD_DEBUG */ diff --git a/erts/emulator/beam/erl_hl_timer.h b/erts/emulator/beam/erl_hl_timer.h index 9cdcd581a0..f70fcdd1c0 100644 --- a/erts/emulator/beam/erl_hl_timer.h +++ b/erts/emulator/beam/erl_hl_timer.h @@ -21,7 +21,7 @@ #ifndef ERL_HL_TIMER_H__ #define ERL_HL_TIMER_H__ -typedef struct ErtsHLTimer_ ErtsBifTimers; +typedef struct ErtsBifTimer_ ErtsBifTimers; typedef struct ErtsHLTimerService_ ErtsHLTimerService; #include "sys.h" @@ -56,7 +56,7 @@ void erts_cancel_proc_timer(Process *); void erts_set_port_timer(Port *, Sint64); void erts_cancel_port_timer(Port *); Sint64 erts_read_port_timer(Port *); -int erts_cancel_bif_timers(Process *, ErtsBifTimers *, void **); +int erts_cancel_bif_timers(Process *, ErtsBifTimers **, void **); int erts_detach_accessor_bif_timers(Process *, ErtsBifTimers *, void **); ErtsHLTimerService *erts_create_timer_service(void); void erts_hl_timer_init(void); diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c index 61477af316..ac0324d846 100644 --- a/erts/emulator/beam/erl_init.c +++ b/erts/emulator/beam/erl_init.c @@ -61,6 +61,9 @@ #define ERTS_DEFAULT_NO_ASYNC_THREADS 10 +#define ERTS_DEFAULT_SCHED_STACK_SIZE 256 +#define ERTS_MIN_SCHED_STACK_SIZE 20 + /* * The variables below (prefixed with etp_) are for erts/etc/unix/etp-commands * only. Do not remove even though they aren't used elsewhere in the emulator! @@ -125,6 +128,8 @@ const Eterm etp_hole_marker = ERTS_HOLE_MARKER; const Eterm etp_hole_marker = 0; #endif +static int modified_sched_thread_suggested_stack_size = 0; + /* * Note about VxWorks: All variables must be initialized by executable code, * not by an initializer. Otherwise a new instance of the emulator will @@ -1133,8 +1138,12 @@ early_init(int *argc, char **argv) /* } if (dirty_cpu_scheds > schdlrs) dirty_cpu_scheds = schdlrs; + if (dirty_cpu_scheds < 1) + dirty_cpu_scheds = 1; if (dirty_cpu_scheds_online > schdlrs_onln) dirty_cpu_scheds_online = schdlrs_onln; + if (dirty_cpu_scheds_online < 1) + dirty_cpu_scheds_online = 1; #endif } @@ -1237,24 +1246,38 @@ early_init(int *argc, char **argv) /* } #ifndef ERTS_SMP + +void *erts_scheduler_stack_limit; + + static void set_main_stack_size(void) { - if (erts_sched_thread_suggested_stack_size > 0) { + char c; + UWord stacksize; # if HAVE_DECL_GETRLIMIT && HAVE_DECL_SETRLIMIT && HAVE_DECL_RLIMIT_STACK - struct rlimit rl; - int bytes = erts_sched_thread_suggested_stack_size * sizeof(Uint) * 1024; - if (getrlimit(RLIMIT_STACK, &rl) != 0 || - (rl.rlim_cur = bytes, setrlimit(RLIMIT_STACK, &rl) != 0)) { - erts_fprintf(stderr, "failed to set stack size for scheduler " - "thread to %d bytes\n", bytes); - erts_usage(); - } + struct rlimit rl; + int bytes; + stacksize = erts_sched_thread_suggested_stack_size * sizeof(Uint) * 1024; + /* Add some extra pages... neede by some systems... */ + bytes = (int) stacksize + 3*erts_sys_get_page_size(); + if (getrlimit(RLIMIT_STACK, &rl) != 0 || + (rl.rlim_cur = bytes, setrlimit(RLIMIT_STACK, &rl) != 0)) { + erts_fprintf(stderr, "failed to set stack size for scheduler " + "thread to %d bytes\n", bytes); + erts_usage(); + } # else + if (modified_sched_thread_suggested_stack_size) { erts_fprintf(stderr, "no OS support for dynamic stack size limit\n"); - erts_usage(); -# endif + erts_usage(); } + /* Be conservative and hope it is not more than 64 kWords... */ + stacksize = 64*1024*sizeof(void *); +# endif + + erts_scheduler_stack_limit = erts_calc_stacklimit(&c, stacksize); } + #endif void @@ -1299,12 +1322,11 @@ erl_start(int argc, char **argv) port_tab_sz_ignore_files = 1; } -#if (defined(__APPLE__) && defined(__MACH__)) || defined(__DARWIN__) /* - * The default stack size on MacOS X is too small for pcre. + * A default stack size suitable for pcre which might use quite + * a lot of stack. */ - erts_sched_thread_suggested_stack_size = 256; -#endif + erts_sched_thread_suggested_stack_size = ERTS_DEFAULT_SCHED_STACK_SIZE; #ifdef DEBUG verbose = DEBUG_DEFAULT; @@ -1927,6 +1949,7 @@ erl_start(int argc, char **argv) /* suggested stack size (Kilo Words) for scheduler threads */ arg = get_arg(sub_param+2, argv[i+1], &i); erts_sched_thread_suggested_stack_size = atoi(arg); + modified_sched_thread_suggested_stack_size = 1; if ((erts_sched_thread_suggested_stack_size < ERTS_SCHED_THREAD_MIN_STACK_SIZE) @@ -2236,6 +2259,9 @@ erl_start(int argc, char **argv) boot_argc = argc - i; /* Number of arguments to init */ boot_argv = &argv[i]; + if (erts_sched_thread_suggested_stack_size < ERTS_MIN_SCHED_STACK_SIZE) + erts_sched_thread_suggested_stack_size = ERTS_MIN_SCHED_STACK_SIZE; + erl_init(ncpu, proc_tab_sz, legacy_proc_tab, @@ -2308,6 +2334,7 @@ erl_start(int argc, char **argv) set_main_stack_size(); erts_sched_init_time_sup(esdp); erts_ets_sched_spec_data_init(esdp); + erts_aux_work_timeout_late_init(esdp); process_main(esdp->x_reg_array, esdp->f_reg_array); } #endif diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c index 635b2ab90d..872b58d1ef 100644 --- a/erts/emulator/beam/erl_nif.c +++ b/erts/emulator/beam/erl_nif.c @@ -2811,14 +2811,19 @@ enif_thread_type(void) if (!esdp) return ERL_NIF_THR_UNDEFINED; - if (!ERTS_SCHEDULER_IS_DIRTY(esdp)) + switch (esdp->type) { + case ERTS_SCHED_NORMAL: return ERL_NIF_THR_NORMAL_SCHEDULER; - - if (ERTS_SCHEDULER_IS_DIRTY_CPU(esdp)) +#ifdef ERTS_DIRTY_SCHEDULERS + case ERTS_SCHED_DIRTY_CPU: return ERL_NIF_THR_DIRTY_CPU_SCHEDULER; - - ASSERT(ERTS_SCHEDULER_IS_DIRTY_IO(esdp)); - return ERL_NIF_THR_DIRTY_IO_SCHEDULER; + case ERTS_SCHED_DIRTY_IO: + return ERL_NIF_THR_DIRTY_IO_SCHEDULER; +#endif + default: + ERTS_INTERNAL_ERROR("Invalid scheduler type"); + return -1; + } } /* Maps */ diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c index 88fae30845..f35c5e04a2 100644 --- a/erts/emulator/beam/erl_process.c +++ b/erts/emulator/beam/erl_process.c @@ -280,6 +280,7 @@ schdlr_sspnd_get_nscheds(ErtsSchedTypeCounters *valp, } } +#ifdef DEBUG static ERTS_INLINE Uint32 schdlr_sspnd_get_nscheds_tot(ErtsSchedTypeCounters *valp) { @@ -290,6 +291,7 @@ schdlr_sspnd_get_nscheds_tot(ErtsSchedTypeCounters *valp) #endif return res; } +#endif static ERTS_INLINE void schdlr_sspnd_dec_nscheds(ErtsSchedTypeCounters *valp, @@ -560,7 +562,6 @@ static int stack_element_dump(fmtfn_t to, void *to_arg, Eterm* sp, int yreg); static void aux_work_timeout(void *unused); static void aux_work_timeout_early_init(int no_schedulers); -static void aux_work_timeout_late_init(void); static void setup_aux_work_timer(ErtsSchedulerData *esdp); static int execute_sys_tasks(Process *c_p, @@ -2790,6 +2791,9 @@ typedef struct { int initialized; erts_atomic32_t refc; +#ifdef DEBUG + erts_atomic32_t used; +#endif erts_atomic32_t type[1]; } ErtsAuxWorkTmo; @@ -2799,6 +2803,13 @@ static ERTS_INLINE void start_aux_work_timer(ErtsSchedulerData *esdp) { ErtsMonotonicTime tmo = erts_get_monotonic_time(esdp); +#ifdef DEBUG + Uint no = (Uint) erts_atomic32_xchg_mb(&aux_work_tmo->used, + (erts_aint32_t) esdp->no); + ASSERT(esdp->type == ERTS_SCHED_NORMAL); + ASSERT(!no); +#endif + tmo = ERTS_MONOTONIC_TO_CLKTCKS(tmo-1); tmo += ERTS_MSEC_TO_CLKTCKS(1000) + 1; erts_twheel_init_timer(&aux_work_tmo->timer.data); @@ -2806,7 +2817,6 @@ start_aux_work_timer(ErtsSchedulerData *esdp) erts_twheel_set_timer(esdp->timer_wheel, &aux_work_tmo->timer.data, aux_work_timeout, - NULL, (void *) esdp, tmo); } @@ -2835,16 +2845,19 @@ aux_work_timeout_early_init(int no_schedulers) aux_work_tmo = (ErtsAuxWorkTmo *) p; aux_work_tmo->initialized = 0; erts_atomic32_init_nob(&aux_work_tmo->refc, 0); +#ifdef DEBUG + erts_atomic32_init_nob(&aux_work_tmo->used, 0); +#endif for (i = 0; i <= no_schedulers; i++) erts_atomic32_init_nob(&aux_work_tmo->type[i], 0); } void -aux_work_timeout_late_init(void) +erts_aux_work_timeout_late_init(ErtsSchedulerData *esdp) { aux_work_tmo->initialized = 1; - if (erts_atomic32_read_nob(&aux_work_tmo->refc)) - start_aux_work_timer(erts_get_scheduler_data()); + if (erts_atomic32_read_acqb(&aux_work_tmo->refc)) + start_aux_work_timer(esdp); } static void @@ -2852,6 +2865,13 @@ aux_work_timeout(void *vesdp) { erts_aint32_t refc; int i; +#ifdef DEBUG + ErtsSchedulerData *esdp = erts_get_scheduler_data(); + Uint no = (Uint) erts_atomic32_xchg_mb(&aux_work_tmo->used, 0); + ASSERT(no == esdp->no); + ASSERT(esdp == (ErtsSchedulerData *) vesdp); +#endif + #ifdef ERTS_SMP i = 0; #else @@ -5947,14 +5967,30 @@ erts_sched_set_wake_cleanup_threshold(char *str) static void init_aux_work_data(ErtsAuxWorkData *awdp, ErtsSchedulerData *esdp, char *dawwp) { - if (!esdp) - awdp->sched_id = 0; + int id = 0; + if (esdp) { + switch (esdp->type) { + case ERTS_SCHED_NORMAL: + id = (int) esdp->no; + break; #ifdef ERTS_DIRTY_SCHEDULERS - else if (ERTS_SCHEDULER_IS_DIRTY(esdp)) - awdp->sched_id = (int) ERTS_DIRTY_SCHEDULER_NO(esdp); + case ERTS_SCHED_DIRTY_CPU: + id = (int) erts_no_schedulers; + id += (int) esdp->dirty_no; + break; + case ERTS_SCHED_DIRTY_IO: + id = (int) erts_no_schedulers; + id += (int) erts_no_dirty_cpu_schedulers; + id += (int) esdp->dirty_no; + break; #endif - else - awdp->sched_id = (int) esdp->no; + default: + ERTS_INTERNAL_ERROR("Invalid scheduler type"); + break; + } + } + + awdp->sched_id = id; awdp->esdp = esdp; awdp->ssi = esdp ? esdp->ssi : NULL; #ifdef ERTS_SMP @@ -6027,7 +6063,7 @@ init_scheduler_data(ErtsSchedulerData* esdp, int num, ASSERT(runq == ERTS_DIRTY_IO_RUNQ); esdp->type = ERTS_SCHED_DIRTY_IO; } - ERTS_DIRTY_SCHEDULER_NO(esdp) = (Uint) num; + esdp->dirty_no = (Uint) num; if (num == 1) { /* * Multi-scheduling block functionality depends @@ -6039,7 +6075,7 @@ init_scheduler_data(ErtsSchedulerData* esdp, int num, else { esdp->type = ERTS_SCHED_NORMAL; esdp->no = (Uint) num; - ERTS_DIRTY_SCHEDULER_NO(esdp) = 0; + esdp->dirty_no = 0; runq->scheduler = esdp; } esdp->dirty_shadow_process = shadow_proc; @@ -6055,6 +6091,7 @@ init_scheduler_data(ErtsSchedulerData* esdp, int num, runq->scheduler = esdp; esdp->run_queue = runq; esdp->no = (Uint) num; + esdp->type = ERTS_SCHED_NORMAL; #endif esdp->ssi = ssi; @@ -6449,8 +6486,6 @@ erts_init_scheduling(int no_schedulers, int no_schedulers_online /* init port tasks */ erts_port_task_init(); - aux_work_timeout_late_init(); - #ifndef ERTS_SMP #ifdef ERTS_DO_VERIFY_UNUSED_TEMP_ALLOC erts_scheduler_data->verify_unused_temp_alloc @@ -7776,11 +7811,11 @@ suspend_scheduler(ErtsSchedulerData *esdp) break; case ERTS_SCHED_DIRTY_CPU: online_flag = ERTS_SCHDLR_SSPND_CHNG_DCPU_ONLN; - no = ERTS_DIRTY_SCHEDULER_NO(esdp); + no = esdp->dirty_no; break; case ERTS_SCHED_DIRTY_IO: online_flag = 0; - no = ERTS_DIRTY_SCHEDULER_NO(esdp); + no = esdp->dirty_no; break; default: ERTS_INTERNAL_ERROR("Invalid scheduler type"); @@ -8515,8 +8550,9 @@ erts_block_multi_scheduling(Process *p, ErtsProcLocks plocks, int on, int normal p->flags |= have_blckd_flg; goto wait_until_msb; } - else if (msbp->blckrs) { - ASSERT(msbp->ongoing); + else if (msbp->blckrs || (normal && erts_no_schedulers == 1)) { + ASSERT(!msbp->blckrs || msbp->ongoing); + msbp->ongoing = 1; plp = proclist_create(p); erts_proclist_store_last(&msbp->blckrs, plp); p->flags |= have_blckd_flg; @@ -8530,7 +8566,7 @@ erts_block_multi_scheduling(Process *p, ErtsProcLocks plocks, int on, int normal else res = ERTS_SCHDLR_SSPND_DONE_NMSCHED_BLOCKED; } - else { + else { int online = (int) schdlr_sspnd_get_nscheds(&schdlr_sspnd.online, ERTS_SCHED_NORMAL); ASSERT(!msbp->ongoing); @@ -8735,6 +8771,9 @@ sched_thread_func(void *vesdp) erts_sched_init_time_sup(esdp); + if (no == 1) + erts_aux_work_timeout_late_init(esdp); + (void) ERTS_RUNQ_FLGS_SET_NOB(esdp->run_queue, ERTS_RUNQ_FLG_EXEC); @@ -8804,8 +8843,7 @@ sched_dirty_cpu_thread_func(void *vesdp) { ErtsThrPrgrCallbacks callbacks; ErtsSchedulerData *esdp = vesdp; - Uint no = ERTS_DIRTY_SCHEDULER_NO(esdp); - ERTS_DIRTY_SCHEDULER_TYPE(esdp) = ERTS_DIRTY_CPU_SCHEDULER; + Uint no = esdp->dirty_no; ASSERT(no != 0); ERTS_DIRTY_CPU_SCHED_SLEEP_INFO_IX(no-1)->event = erts_tse_fetch(); callbacks.arg = (void *) esdp->ssi; @@ -8853,8 +8891,7 @@ sched_dirty_io_thread_func(void *vesdp) { ErtsThrPrgrCallbacks callbacks; ErtsSchedulerData *esdp = vesdp; - Uint no = ERTS_DIRTY_SCHEDULER_NO(esdp); - ERTS_DIRTY_SCHEDULER_TYPE(esdp) = ERTS_DIRTY_IO_SCHEDULER; + Uint no = esdp->dirty_no; ASSERT(no != 0); ERTS_DIRTY_IO_SCHED_SLEEP_INFO_IX(no-1)->event = erts_tse_fetch(); callbacks.arg = (void *) esdp->ssi; @@ -11359,7 +11396,7 @@ erts_execute_dirty_system_task(Process *c_p) switch (st->type) { case ERTS_PSTT_CLA: - ASSERT(is_value(st_res)); + ASSERT(is_value(cla_res)); st_res = cla_res; break; case ERTS_PSTT_GC_MAJOR: @@ -12412,9 +12449,6 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). p->msg_inq.len = 0; #endif p->bif_timers = NULL; -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - p->accessor_bif_timers = NULL; -#endif p->mbuf = NULL; p->msg_frag = NULL; p->mbuf_sz = 0; @@ -12613,9 +12647,6 @@ void erts_init_empty_process(Process *p) p->msg.save = &p->msg.first; p->msg.len = 0; p->bif_timers = NULL; -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - p->accessor_bif_timers = NULL; -#endif p->dictionary = NULL; p->seq_trace_clock = 0; p->seq_trace_lastcnt = 0; @@ -12716,9 +12747,6 @@ erts_debug_verify_clean_empty_process(Process* p) ASSERT(p->msg.first == NULL); ASSERT(p->msg.len == 0); ASSERT(p->bif_timers == NULL); -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - ASSERT(p->accessor_bif_timers == NULL); -#endif ASSERT(p->dictionary == NULL); ASSERT(p->catches == 0); ASSERT(p->cp == NULL); @@ -13784,7 +13812,7 @@ erts_continue_exit_process(Process *p) ASSERT(erts_proc_read_refc(p) > 0); if (p->bif_timers) { - if (erts_cancel_bif_timers(p, p->bif_timers, &p->u.terminate)) { + if (erts_cancel_bif_timers(p, &p->bif_timers, &p->u.terminate)) { ASSERT(erts_proc_read_refc(p) > 0); goto yield; } @@ -13792,19 +13820,6 @@ erts_continue_exit_process(Process *p) p->bif_timers = NULL; } -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - if (p->accessor_bif_timers) { - if (erts_detach_accessor_bif_timers(p, - p->accessor_bif_timers, - &p->u.terminate)) { - ASSERT(erts_proc_read_refc(p) > 0); - goto yield; - } - ASSERT(erts_proc_read_refc(p) > 0); - p->accessor_bif_timers = NULL; - } -#endif - #ifdef ERTS_SMP if (p->flags & F_SCHDLR_ONLN_WAITQ) abort_sched_onln_chng_waitq(p); diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h index baf830615d..b21597d63b 100644 --- a/erts/emulator/beam/erl_process.h +++ b/erts/emulator/beam/erl_process.h @@ -641,13 +641,6 @@ typedef enum { ERTS_DIRTY_IO_SCHEDULER } ErtsDirtySchedulerType; -typedef union { - struct { - ErtsDirtySchedulerType type: 1; - Uint num: sizeof(Uint)*8 - 1; - } s; - Uint no; -} ErtsDirtySchedId; #endif struct ErtsSchedulerData_ { @@ -674,7 +667,7 @@ struct ErtsSchedulerData_ { ErtsSchedType type; Uint no; /* Scheduler number for normal schedulers */ #ifdef ERTS_DIRTY_SCHEDULERS - ErtsDirtySchedId dirty_no; /* Scheduler number for dirty schedulers */ + Uint dirty_no; /* Scheduler number for dirty schedulers */ Process *dirty_shadow_process; #endif Port *current_port; @@ -1033,9 +1026,6 @@ struct process { ErlMessageQueue msg; /* Message queue */ ErtsBifTimers *bif_timers; /* Bif timers aiming at this process */ -#ifdef ERTS_BTM_ACCESSOR_SUPPORT - ErtsBifTimers *accessor_bif_timers; /* Accessor bif timers */ -#endif ProcDict *dictionary; /* Process dictionary, may be NULL */ @@ -1578,23 +1568,13 @@ extern int erts_system_profile_ts_type; #define ERTS_DIRTY_IO_SCHEDULER_IX(IX) \ (ASSERT(0 <= (IX) && (IX) < erts_no_dirty_io_schedulers), \ &erts_aligned_dirty_io_scheduler_data[(IX)].esd) -#define ERTS_DIRTY_SCHEDULER_NO(ESDP) \ - ((ESDP)->dirty_no.s.num) -#define ERTS_DIRTY_SCHEDULER_TYPE(ESDP) \ - ((ESDP)->dirty_no.s.type) -#ifdef ERTS_SMP #define ERTS_SCHEDULER_IS_DIRTY(ESDP) \ - ((ESDP)->dirty_no.s.num != 0) + ((ESDP)->type != ERTS_SCHED_NORMAL) #define ERTS_SCHEDULER_IS_DIRTY_CPU(ESDP) \ - (ERTS_SCHEDULER_IS_DIRTY((ESDP)) & ((ESDP)->dirty_no.s.type == 0)) + ((ESDP)->type == ERTS_SCHED_DIRTY_CPU) #define ERTS_SCHEDULER_IS_DIRTY_IO(ESDP) \ - (ERTS_SCHEDULER_IS_DIRTY((ESDP)) & ((ESDP)->dirty_no.s.type == 1)) -#else -#define ERTS_SCHEDULER_IS_DIRTY(ESDP) 0 -#define ERTS_SCHEDULER_IS_DIRTY_CPU(ESDP) 0 -#define ERTS_SCHEDULER_IS_DIRTY_IO(ESDP) 0 -#endif -#else + ((ESDP)->type == ERTS_SCHED_DIRTY_IO) +#else /* !ERTS_DIRTY_SCHEDULERS */ #define ERTS_RUNQ_IX_IS_DIRTY(IX) 0 #define ERTS_SCHEDULER_IS_DIRTY(ESDP) 0 #define ERTS_SCHEDULER_IS_DIRTY_CPU(ESDP) 0 @@ -1847,6 +1827,7 @@ void erts_schedule_multi_misc_aux_work(int ignore_self, void (*func)(void *), void *arg); erts_aint32_t erts_set_aux_work_timeout(int, erts_aint32_t, int); +void erts_aux_work_timeout_late_init(ErtsSchedulerData *esdp); void erts_sched_notify_check_cpu_bind(void); Uint erts_active_schedulers(void); void erts_init_process(int, int, int); diff --git a/erts/emulator/beam/erl_process_dict.c b/erts/emulator/beam/erl_process_dict.c index 8311fde025..7cfdf20341 100644 --- a/erts/emulator/beam/erl_process_dict.c +++ b/erts/emulator/beam/erl_process_dict.c @@ -54,9 +54,9 @@ #define HASH_RANGE(PDict) ((PDict)->usedSlots) #define MAKE_HASH(Term) \ - ((is_small(Term)) ? unsigned_val(Term) : \ + ((is_small(Term)) ? (Uint32) unsigned_val(Term) : \ ((is_atom(Term)) ? \ - atom_val(Term) : \ + (Uint32) atom_val(Term) : \ make_internal_hash(Term))) #define PD_SZ2BYTES(Sz) (sizeof(ProcDict) + ((Sz) - 1)*sizeof(Eterm)) diff --git a/erts/emulator/beam/erl_time.h b/erts/emulator/beam/erl_time.h index a1c4220633..46d6da6448 100644 --- a/erts/emulator/beam/erl_time.h +++ b/erts/emulator/beam/erl_time.h @@ -21,19 +21,52 @@ #ifndef ERL_TIME_H__ #define ERL_TIME_H__ -/* timer wheel size NEED to be a power of 2 */ -#ifdef SMALL_MEMORY -#define ERTS_TIW_SIZE (1 << 13) -#else -#define ERTS_TIW_SIZE (1 << 16) +#if 0 +# define ERTS_TW_DEBUG +#endif +#if defined(DEBUG) && !defined(ERTS_TW_DEBUG) +# define ERTS_TW_DEBUG #endif -#if defined(DEBUG) || 0 +#if defined(ERTS_TW_DEBUG) #define ERTS_TIME_ASSERT(B) ERTS_ASSERT(B) #else #define ERTS_TIME_ASSERT(B) ((void) 1) #endif +#ifdef ERTS_TW_DEBUG +/* + * Soon wheel will handle about 1 seconds + * Later wheel will handle about 8 minutes + */ +# define ERTS_TW_SOON_WHEEL_BITS 10 +# define ERTS_TW_LATER_WHEEL_BITS 10 +#else +# ifdef SMALL_MEMORY +/* + * Soon wheel will handle about 4 seconds + * Later wheel will handle about 2 hours and 19 minutes + */ +# define ERTS_TW_SOON_WHEEL_BITS 12 +# define ERTS_TW_LATER_WHEEL_BITS 12 +# else +/* + * Soon wheel will handle about 16 seconds + * Later wheel will handle about 37 hours and 16 minutes + */ +# define ERTS_TW_SOON_WHEEL_BITS 14 +# define ERTS_TW_LATER_WHEEL_BITS 14 +# endif +#endif + +/* + * Number of slots in each timer wheel... + * + * These *need* to be a power of 2 + */ +#define ERTS_TW_SOON_WHEEL_SIZE (1 << ERTS_TW_SOON_WHEEL_BITS) +#define ERTS_TW_LATER_WHEEL_SIZE (1 << ERTS_TW_LATER_WHEEL_BITS) + typedef enum { ERTS_NO_TIME_WARP_MODE, ERTS_SINGLE_TIME_WARP_MODE, @@ -103,7 +136,10 @@ Eterm erts_system_time_source(struct process*c_p); #define ERTS_CLKTCK_RESOLUTION (erts_time_sup__.r.o.clktck_resolution) #endif -#define ERTS_TIMER_WHEEL_MSEC (ERTS_TIW_SIZE/(ERTS_CLKTCK_RESOLUTION/1000)) +#define ERTS_TW_SOON_WHEEL_MSEC (ERTS_TW_SOON_WHEEL_SIZE/(ERTS_CLKTCK_RESOLUTION/1000)) +#define ERTS_TW_LATER_WHEEL_MSEC (ERTS_TW_LATER_WHEEL_SIZE*ERTS_TW_SOON_WHEEL_MSEC/2) + +#define ERTS_TIMER_WHEEL_MSEC ERTS_TW_LATER_WHEEL_MSEC struct erts_time_sup_read_only__ { ErtsMonotonicTime monotonic_time_unit; @@ -412,34 +448,25 @@ erts_time_unit_conversion(Uint64 value, void erts_sched_init_time_sup(ErtsSchedulerData *esdp); -#define ERTS_TWHEEL_SLOT_AT_ONCE -1 -#define ERTS_TWHEEL_SLOT_INACTIVE -2 +#define ERTS_TW_SLOT_INACTIVE (-2) /* ** Timer entry: */ typedef struct erl_timer { - struct erl_timer* next; /* next entry tiw slot or chain */ - struct erl_timer* prev; /* prev entry tiw slot or chain */ - union { - struct { - void (*timeout)(void*); /* called when timeout */ - void (*cancel)(void*); /* called when cancel (may be NULL) */ - void* arg; /* argument to timeout/cancel procs */ - } func; - ErtsThrPrgrLaterOp cleanup; - } u; ErtsMonotonicTime timeout_pos; /* Timeout in absolute clock ticks */ + struct erl_timer* next; /* next entry tiw slot or chain */ + struct erl_timer* prev; /* prev entry tiw slot or chain */ + void (*timeout)(void*); /* called when timeout */ + void* arg; /* argument to timeout/cancel procs */ int slot; } ErtsTWheelTimer; typedef void (*ErlTimeoutProc)(void*); -typedef void (*ErlCancelProc)(void*); void erts_twheel_set_timer(ErtsTimerWheel *tiw, ErtsTWheelTimer *p, ErlTimeoutProc timeout, - ErlCancelProc cancel, void *arg, - ErtsMonotonicTime timeout_pos); + void *arg, ErtsMonotonicTime timeout_pos); void erts_twheel_cancel_timer(ErtsTimerWheel *tiw, ErtsTWheelTimer *p); ErtsTimerWheel *erts_create_timer_wheel(ErtsSchedulerData *esdp); @@ -447,12 +474,13 @@ ErtsMonotonicTime erts_check_next_timeout_time(ErtsSchedulerData *); ERTS_GLB_INLINE void erts_twheel_init_timer(ErtsTWheelTimer *p); ERTS_GLB_INLINE ErtsMonotonicTime erts_next_timeout_time(ErtsNextTimeoutRef); +ERTS_GLB_INLINE ErtsMonotonicTime erts_tweel_read_timeout(ErtsTWheelTimer *twt); #if ERTS_GLB_INLINE_INCL_FUNC_DEF ERTS_GLB_INLINE void erts_twheel_init_timer(ErtsTWheelTimer *p) { - p->slot = ERTS_TWHEEL_SLOT_INACTIVE; + p->slot = ERTS_TW_SLOT_INACTIVE; } ERTS_GLB_INLINE ErtsMonotonicTime erts_next_timeout_time(ErtsNextTimeoutRef nxt_tmo_ref) @@ -460,6 +488,12 @@ ERTS_GLB_INLINE ErtsMonotonicTime erts_next_timeout_time(ErtsNextTimeoutRef nxt_ return *((ErtsMonotonicTime *) nxt_tmo_ref); } +ERTS_GLB_INLINE ErtsMonotonicTime +erts_tweel_read_timeout(ErtsTWheelTimer *twt) +{ + return twt->timeout_pos; +} + #endif /* ERTS_GLB_INLINE_INCL_FUNC_DEF */ void diff --git a/erts/emulator/beam/erl_time_sup.c b/erts/emulator/beam/erl_time_sup.c index cf9d3adc86..c69fec3c80 100644 --- a/erts/emulator/beam/erl_time_sup.c +++ b/erts/emulator/beam/erl_time_sup.c @@ -678,7 +678,6 @@ check_time_correction(void *vesdp) erts_twheel_set_timer(esdp->timer_wheel, &time_sup.inf.c.parmon.timer, check_time_correction, - NULL, (void *) esdp, timeout_pos); } @@ -729,7 +728,6 @@ check_time_offset(void *vesdp) erts_twheel_set_timer(esdp->timer_wheel, &time_sup.inf.c.parmon.timer, check_time_offset, - NULL, vesdp, timeout_pos); } @@ -836,7 +834,6 @@ late_init_time_correction(ErtsSchedulerData *esdp) erts_twheel_set_timer(esdp->timer_wheel, &time_sup.inf.c.parmon.timer, check_func, - NULL, (quick_init_drift_adj ? NULL : esdp), diff --git a/erts/emulator/beam/external.c b/erts/emulator/beam/external.c index e5358c2c3f..f5a5da981c 100644 --- a/erts/emulator/beam/external.c +++ b/erts/emulator/beam/external.c @@ -2090,7 +2090,6 @@ enc_atom(ErtsAtomCacheMap *acmp, Eterm atom, byte *ep, Uint32 dflags) { int iix; int len; - int utf8_atoms = (int) (dflags & DFLAG_UTF8_ATOMS); ASSERT(is_atom(atom)); @@ -2119,8 +2118,8 @@ enc_atom(ErtsAtomCacheMap *acmp, Eterm atom, byte *ep, Uint32 dflags) if (iix < 0) { Atom *a = atom_tab(atom_val(atom)); len = a->len; - if (utf8_atoms || a->latin1_chars < 0) { - if (len > 255) { + { + if (len > 255) { *ep++ = ATOM_UTF8_EXT; put_int16(len, ep); ep += 2; @@ -2132,32 +2131,6 @@ enc_atom(ErtsAtomCacheMap *acmp, Eterm atom, byte *ep, Uint32 dflags) } sys_memcpy((char *) ep, (char *) a->name, len); } - else { - if (a->latin1_chars <= 255 && (dflags & DFLAG_SMALL_ATOM_TAGS)) { - *ep++ = SMALL_ATOM_EXT; - if (len == a->latin1_chars) { - sys_memcpy(ep+1, a->name, len); - } - else { - len = erts_utf8_to_latin1(ep+1, a->name, len); - ASSERT(len == a->latin1_chars); - } - put_int8(len, ep); - ep++; - } - else { - *ep++ = ATOM_EXT; - if (len == a->latin1_chars) { - sys_memcpy(ep+2, a->name, len); - } - else { - len = erts_utf8_to_latin1(ep+2, a->name, len); - ASSERT(len == a->latin1_chars); - } - put_int16(len, ep); - ep += 2; - } - } ep += len; return ep; } @@ -4005,7 +3978,7 @@ error: factory->hp = hp; /* the largest must be the freshest */ } } - else ASSERT(factory->hp == hp); + else ASSERT(!factory->hp || factory->hp == hp); error_hamt: erts_factory_undo(factory); @@ -4080,19 +4053,13 @@ encode_size_struct_int(TTBSizeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, else { Atom *a = atom_tab(atom_val(obj)); int alen; - if ((dflags & DFLAG_UTF8_ATOMS) || a->latin1_chars < 0) { + { alen = a->len; result += 1 + 1 + alen; if (alen > 255) { result++; /* ATOM_UTF8_EXT (not small) */ } } - else { - alen = a->latin1_chars; - result += 1 + 1 + alen; - if (alen > 255 || !(dflags & DFLAG_SMALL_ATOM_TAGS)) - result++; /* ATOM_EXT (not small) */ - } insert_acache_map(acmp, obj, dflags); } break; diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h index d765547e89..bb4d442240 100644 --- a/erts/emulator/beam/global.h +++ b/erts/emulator/beam/global.h @@ -1136,6 +1136,11 @@ void erts_short_init(void); void erl_start(int, char**); void erts_usage(void); Eterm erts_preloaded(Process* p); + +#ifndef ERTS_SMP +extern void *erts_scheduler_stack_limit; +#endif + /* erl_md5.c */ typedef struct { @@ -1198,6 +1203,11 @@ Uint64 erts_timestamp_millis(void); Export* erts_find_function(Eterm, Eterm, unsigned int, ErtsCodeIndex); +void *erts_calc_stacklimit(char *prev_c, UWord stacksize); +int erts_check_below_limit(char *ptr, char *limit); +int erts_check_above_limit(char *ptr, char *limit); +void *erts_ptr_id(void *ptr); + Eterm store_external_or_ref_in_proc_(Process *, Eterm); Eterm store_external_or_ref_(Uint **, ErlOffHeap*, Eterm); @@ -1233,6 +1243,11 @@ void erts_init_external(void); /* erl_map.c */ void erts_init_map(void); +/* beam_debug.c */ +UWord erts_check_stack_recursion_downwards(char *start_c); +UWord erts_check_stack_recursion_upwards(char *start_c); +int erts_is_above_stack_limit(char *ptr); + /* erl_unicode.c */ void erts_init_unicode(void); Sint erts_unicode_set_loop_limit(Sint limit); diff --git a/erts/emulator/beam/sys.h b/erts/emulator/beam/sys.h index 144dd60d21..24de35696c 100644 --- a/erts/emulator/beam/sys.h +++ b/erts/emulator/beam/sys.h @@ -602,6 +602,8 @@ __decl_noreturn void __noreturn erts_exit(int n, char*, ...); Eterm erts_check_io_info(void *p); +UWord erts_sys_get_page_size(void); + /* Size of misc memory allocated from system dependent code */ Uint erts_sys_misc_mem_sz(void); diff --git a/erts/emulator/beam/time.c b/erts/emulator/beam/time.c index 6f15082130..cee3cb619f 100644 --- a/erts/emulator/beam/time.c +++ b/erts/emulator/beam/time.c @@ -17,57 +17,157 @@ * * %CopyrightEnd% */ - + /* - * TIMING WHEEL + * TIMER WHEEL + * + * + * The time scale used for timers is Erlang monotonic time. The + * time unit used is ERTS specific clock ticks. A clock tick is + * currently defined to 1 millisecond. That is, the resolution of + * timers triggered by the runtime system is 1 millisecond. * - * Timeouts kept in an wheel. A timeout is measured relative to the - * current slot (tiw_pos) in the wheel, and inserted at slot - * (tiw_pos + timeout) % TIW_SIZE. Each timeout also has a count - * equal to timeout/TIW_SIZE, which is needed since the time axis - * is wrapped arount the wheel. + * When a timer is set, it is determined at what Erlang monotonic + * time, in clock ticks, it should be triggered. * - * Several slots may be processed in one operation. If the number of - * slots is greater that the wheel size, the wheel is only traversed - * once, + * The 'pos' field of the wheel corresponds to current time of + * the wheel. That is, it corresponds to Erlang monotonic time in + * clock tick time unit. The 'pos' field of the wheel is + * monotonically increased when erts_bump_timers() is called. All + * timers in the wheel that have a time less than or equal to + * 'pos' are triggered by the bump operation. The bump operation + * may however be spread over multiple calls to erts_bump_timers() + * if there are a lots of timers to trigger. * - * The following example shows a time axis where there is one timeout - * at each "tick", and where 1, 2, 3 ... wheel slots are released in - * one operation. The notation "<x" means "release all items with - * counts less than x". + * Each scheduler thread maintains its own timer wheel. The timer + * wheel of a scheduler, however, actually consists of two wheels. + * A soon wheel and a later wheel. + * + * + * -- The Soon Wheel -- + * + * The soon wheel contain timers that should be triggered soon. + * That is, they are soon to be triggered. Each slot in the soon + * wheel is 1 clock tick wide. The number of slots in the soon + * wheel is currently 2¹⁴. That is, it contains timers in the + * range ('pos', 'pos' + 2¹⁴] which corresponds to a bit more + * than 16 seconds. + * + * When the bump operation is started, 'pos' is moved forward to a + * position that corresponds to current Erlang monotonic time. Then + * all timers that are in the range (old 'pos', new 'pos'] are + * triggered. During a bump operation, the soon wheel may contain + * timers in the two, possibly overlapping, ranges (old 'pos', + * old 'pos' + 2¹⁴], and (new 'pos', new 'pos' + 2¹⁴]. This may + * occur even if the bump operation doesn't yield, due to timeout + * callbacks inserting new timers. + * + * + * -- The Later Wheel -- + * + * The later wheel contain timers that are further away from 'pos' + * than the width of the soon timer wheel. That is, currently + * timers further away from 'pos' than 2¹⁴ clock ticks. The width + * of each slot in the later wheel is half the width of the soon + * wheel. That is, each slot is currently 2¹³ clock ticks wide + * which corresponds to about 8 seconds. If three timers of the + * times 'pos' + 17000, 'pos' + 18000, and 'pos' + 19000 are + * inserted, they will all end up in the same slot in the later + * wheel. + * + * The number of slots in the later wheel is currently the same as + * in the soon wheel, i.e. 2¹⁴. That is, one revolution of the later + * wheel currently corresponds to 2¹⁴×2¹³ clock ticks which is + * almost 37 ½ hour. Timers even further away than that are put in + * the later slot identified by their time modulo the size of the later + * wheel. Such timers are however very uncommon. Most timers used + * by the runtime system will utilize the high level timer API. + * The high level timer implementation will not insert timers + * further away then one revolution into the later wheel. It will + * instead keep such timers in a tree of very long timers. The + * high level timer implementation utilize one timer wheel timer + * for the management of this tree of timers. This timer is set to + * the closest timeout in the tree. This timer may however be + * further away than one revolution in the later wheel. + * + * The 'later.pos' field identifies next position in the later wheel. + * 'later.pos' is always increased by the width of a later wheel slot. + * That is, currently 2¹³ clock ticks. When 'pos' is moved (during + * a bump operation) closer to 'later.pos' than the width of a later + * wheel slot, i.e. currently when 'pos' + 2¹³ ≥ 'later.pos', we + * inspect the slot identified by 'later.pos' and then move 'later.pos' + * forward. When inspecting the later slot we move all timers in the + * slot, that are in the soon wheel range, from the later wheel to + * the soon wheel. Timers one or more revolutions of the later wheel + * away are kept in the slot. + * + * During normal operation, timers originally located in the later + * wheel will currently be moved into the soon wheel about 8 to + * 16 seconds before they should be triggered. During extremely + * heavy load, the scheduler might however be heavily delayed, so + * the code must be prepared for situations where time for + * triggering the timer has passed when we inspect the later wheel + * slot, and then trigger the timer immediately. We must also be + * prepared to inspect multiple later wheel slots at once due to the + * delay. + * + * + * -- Slot Management -- + * + * All timers of a slot are placed in a circular double linked + * list. This makes insertion and removal of a timer O(1). + * + * While bumping timers in a slot, we move the circular list + * away from the slot, and refer to it from the 'sentinel' + * field. The list will stay there until we are done with it + * even if the bump operation should yield. The cancel operation + * can remove the timer from this position as well as from the + * slot position by just removing it from the circular double + * linked list that it is in. + * + * -- At Once Slot -- + * + * If a timer is set that has a time earlier or equal to 'pos', + * it is not inserted into the wheel. It is instead inserted, + * into a circular double linked list referred to by the "at + * once" slot. When the bump operation is performed these timers + * will be triggered at once. The circular list of the slot will + * be moved to the 'sentinel' field while bumping these timers + * as when bumping an ordinary wheel slot. A yielding bump + * operation and cancelation of timers is handled the same way + * as if the timer was in a wheel slot. + * + * -- Searching for Next Timeout -- + * + * In order to limit the amount of work needed in order to find + * next timeout, we keep track of total amount of timers in the + * wheels, total amount of timers in the later wheel, total amount + * of timers in soon wheel, and the total amount of timers in + * each range of slots. Each slot range currently contain 512 + * slots. + * + * When next timeout is less than the soon wheel width away we + * determine the exact timeout. Due to the timer counts of + * slot ranges, we currently at most need to search 1024 slots + * in the soon wheel. This besides inspecting slot range counts + * and two slots in the later wheel which potentially might trigger + * timeouts for moving timers from the later wheel to the soon wheel + * earlier than timeouts in the soon wheel. We also keep track + * of latest known minimum timeout position in each wheel which + * makes it possible to avoid scanning from current position + * each time. + * + * When next timeout is further away than the soon wheel width + * we settle for the earliest possible timeout in the first + * non-empty slot range. The further away the next timeout is, the + * more likely it is that the next timeout change before we + * actually get there. That is, a change due to another timer is + * set to an earlier time and/or the timer is cancelled. It is + * therefore in this case no point determining next timeout + * exactly. If the state should not change, we will wake up a bit + * early and do a recalculation of next timeout and eventually + * we will be so close to it that we determine it exactly. * - * Size of wheel: 4 - * - * --|----|----|----|----|----|----|----|----|----|----|----|----|---- - * 0.0 0.1 0.2 0.3 1.0 1.1 1.2 1.3 2.0 2.1 2.2 2.3 3.0 - * - * 1 [ ) - * <1 0.1 0.2 0.3 0.0 1.1 1.2 1.3 1.0 2.1 2.2 2.3 2.0 - * - * 2 [ ) - * <1 <1 0.2 0.3 0.0 0.1 1.2 1.3 1.0 1.1 2.2 2.3 2.0 - * - * 3 [ ) - * <1 <1 <1 0.3 0.0 0.1 0.2 1.3 1.0 1.1 1.2 2.3 2.0 - * - * 4 [ ) - * <1 <1 <1 <1 0.0 0.1 0.2 0.3 1.0 1.1 1.2 1.3 2.0 - * - * 5 [ ) - * <2 <1 <1 <1. 0.1 0.2 0.3 0.0 1.1 1.2 1.3 1.0 - * - * 6 [ ) - * <2 <2 <1 <1. 0.2 0.3 0.0 0.1 1.2 1.3 1.0 - * - * 7 [ ) - * <2 <2 <2 <1. 0.3 0.0 0.1 0.2 1.3 1.0 - * - * 8 [ ) - * <2 <2 <2 <2. 0.0 0.1 0.2 0.3 1.0 - * - * 9 [ ) - * <3 <2 <2 <2. 0.1 0.2 0.3 0.0 - * */ #ifdef HAVE_CONFIG_H @@ -80,8 +180,11 @@ #define ERTS_WANT_TIMER_WHEEL_API #include "erl_time.h" -#define ERTS_MONOTONIC_DAY ERTS_SEC_TO_MONOTONIC(60*60*24) -#define ERTS_CLKTCKS_DAY ERTS_MONOTONIC_TO_CLKTCKS(ERTS_MONOTONIC_DAY) +#define ERTS_MAX_CLKTCKS \ + ERTS_MONOTONIC_TO_CLKTCKS(ERTS_MONOTONIC_TIME_MAX) + +#define ERTS_CLKTCKS_WEEK \ + ERTS_MONOTONIC_TO_CLKTCKS(ERTS_SEC_TO_MONOTONIC(7*60*60*24)) #ifdef ERTS_ENABLE_LOCK_CHECK #define ASSERT_NO_LOCKED_LOCKS erts_lc_check_exact(NULL, 0) @@ -90,6 +193,10 @@ #endif #if 0 +# define ERTS_TW_HARD_DEBUG +#endif + +#if defined(ERTS_TW_HARD_DEBUG) && !defined(ERTS_TW_DEBUG) # define ERTS_TW_DEBUG #endif #if defined(DEBUG) && !defined(ERTS_TW_DEBUG) @@ -97,16 +204,62 @@ #endif #undef ERTS_TW_ASSERT -#if defined(ERTS_TW_DEBUG) +#if defined(ERTS_TW_DEBUG) # define ERTS_TW_ASSERT(E) ERTS_ASSERT(E) #else # define ERTS_TW_ASSERT(E) ((void) 1) #endif #ifdef ERTS_TW_DEBUG -# define ERTS_TWHEEL_BUMP_YIELD_LIMIT 5 +# define ERTS_TWHEEL_BUMP_YIELD_LIMIT 500 #else -# define ERTS_TWHEEL_BUMP_YIELD_LIMIT 100 +# define ERTS_TWHEEL_BUMP_YIELD_LIMIT 10000 +#endif +#define ERTS_TW_COST_SLOT 1 +#define ERTS_TW_COST_SLOT_MOVE 5 +#define ERTS_TW_COST_TIMEOUT 100 + +/* + * Every slot in the soon wheel is a clock tick (as defined + * by ERTS) wide. A clock tick is currently 1 milli second. + */ + +#define ERTS_TW_SOON_WHEEL_FIRST_SLOT 0 +#define ERTS_TW_SOON_WHEEL_END_SLOT \ + (ERTS_TW_SOON_WHEEL_FIRST_SLOT + ERTS_TW_SOON_WHEEL_SIZE) + +#define ERTS_TW_SOON_WHEEL_MASK (ERTS_TW_SOON_WHEEL_SIZE-1) + +/* + * Every slot in the later wheel is as wide as half the size + * of the soon wheel. + */ + +#define ERTS_TW_LATER_WHEEL_SHIFT (ERTS_TW_SOON_WHEEL_BITS - 1) +#define ERTS_TW_LATER_WHEEL_SLOT_SIZE \ + ((ErtsMonotonicTime) (1 << ERTS_TW_LATER_WHEEL_SHIFT)) +#define ERTS_TW_LATER_WHEEL_POS_MASK \ + (~((ErtsMonotonicTime) (1 << ERTS_TW_LATER_WHEEL_SHIFT)-1)) + +#define ERTS_TW_LATER_WHEEL_FIRST_SLOT ERTS_TW_SOON_WHEEL_SIZE +#define ERTS_TW_LATER_WHEEL_END_SLOT \ + (ERTS_TW_LATER_WHEEL_FIRST_SLOT + ERTS_TW_LATER_WHEEL_SIZE) + +#define ERTS_TW_LATER_WHEEL_MASK (ERTS_TW_LATER_WHEEL_SIZE-1) + +#define ERTS_TW_SCNT_BITS 9 +#define ERTS_TW_SCNT_SHIFT +#define ERTS_TW_SCNT_SIZE \ + ((ERTS_TW_SOON_WHEEL_SIZE + ERTS_TW_LATER_WHEEL_SIZE) \ + >> ERTS_TW_SCNT_BITS) + +#ifdef __GNUC__ +#if ERTS_TW_SOON_WHEEL_BITS < ERTS_TW_SCNT_BITS +# warning Consider larger soon timer wheel +#endif +#if ERTS_TW_SOON_WHEEL_BITS < ERTS_TW_SCNT_BITS +# warning Consider larger later timer wheel +#endif #endif /* Actual interval time chosen by sys_init_time() */ @@ -119,95 +272,360 @@ static int tiw_itime; /* Constant after init */ # define TIW_ITIME tiw_itime #endif +const int etp_tw_soon_wheel_size = ERTS_TW_SOON_WHEEL_SIZE; +const ErtsMonotonicTime etp_tw_soon_wheel_mask = ERTS_TW_SOON_WHEEL_MASK; +const int etp_tw_soon_wheel_first_slot = ERTS_TW_SOON_WHEEL_FIRST_SLOT; + +const int etp_tw_later_wheel_size = ERTS_TW_LATER_WHEEL_SIZE; +const ErtsMonotonicTime etp_tw_later_wheel_slot_size = ERTS_TW_LATER_WHEEL_SLOT_SIZE; +const int etp_tw_later_wheel_shift = ERTS_TW_LATER_WHEEL_SHIFT; +const ErtsMonotonicTime etp_tw_later_wheel_mask = ERTS_TW_LATER_WHEEL_MASK; +const ErtsMonotonicTime etp_tw_later_wheel_pos_mask = ERTS_TW_LATER_WHEEL_POS_MASK; +const int etp_tw_later_wheel_first_slot = ERTS_TW_LATER_WHEEL_FIRST_SLOT; + struct ErtsTimerWheel_ { - ErtsTWheelTimer *w[ERTS_TIW_SIZE]; + ErtsTWheelTimer *slots[1 /* At Once Slot */ + + ERTS_TW_SOON_WHEEL_SIZE /* Soon Wheel Slots */ + + ERTS_TW_LATER_WHEEL_SIZE]; /* Later Wheel Slots */ + ErtsTWheelTimer **w; + Sint scnt[ERTS_TW_SCNT_SIZE]; + Sint bump_scnt[ERTS_TW_SCNT_SIZE]; ErtsMonotonicTime pos; Uint nto; struct { - ErtsTWheelTimer *head; - ErtsTWheelTimer *tail; Uint nto; } at_once; + struct { + ErtsMonotonicTime min_tpos; + Uint nto; + } soon; + struct { + ErtsMonotonicTime min_tpos; + int min_tpos_slot; + ErtsMonotonicTime pos; + Uint nto; + } later; int yield_slot; int yield_slots_left; - int yield_start_pos; ErtsTWheelTimer sentinel; int true_next_timeout_time; + ErtsMonotonicTime next_timeout_pos; ErtsMonotonicTime next_timeout_time; }; -static ERTS_INLINE ErtsMonotonicTime -find_next_timeout(ErtsSchedulerData *esdp, - ErtsTimerWheel *tiw, - int search_all, - ErtsMonotonicTime curr_time, /* When !search_all */ - ErtsMonotonicTime max_search_time) /* When !search_all */ +#define ERTS_TW_SLOT_AT_ONCE (-1) + +#define ERTS_TW_BUMP_LATER_WHEEL(TIW) \ + ((tiw)->pos + ERTS_TW_LATER_WHEEL_SLOT_SIZE >= (TIW)->later.pos) + +static int bump_later_wheel(ErtsTimerWheel *tiw, int *yield_count_p); + +#ifdef ERTS_TW_DEBUG +#define ERTS_TW_DBG_VERIFY_EMPTY_SOON_SLOTS(TIW, TO_POS) \ + dbg_verify_empty_soon_slots((TIW), (TO_POS)) +#define ERTS_TW_DBG_VERIFY_EMPTY_LATER_SLOTS(TIW, TO_POS) \ + dbg_verify_empty_later_slots((TIW), (TO_POS)) +void dbg_verify_empty_soon_slots(ErtsTimerWheel *, ErtsMonotonicTime); +void dbg_verify_empty_later_slots(ErtsTimerWheel *, ErtsMonotonicTime); +#else +#define ERTS_TW_DBG_VERIFY_EMPTY_SOON_SLOTS(TIW, TO_POS) +#define ERTS_TW_DBG_VERIFY_EMPTY_LATER_SLOTS(TIW, TO_POS) +#endif + +static ERTS_INLINE int +scnt_get_ix(int slot) { - int start_ix, tiw_pos_ix; - ErtsTWheelTimer *p; + return slot >> ERTS_TW_SCNT_BITS; +} + +static ERTS_INLINE void +scnt_inc(Sint *scnt, int slot) +{ + scnt[slot >> ERTS_TW_SCNT_BITS]++; +} + +#ifdef ERTS_TW_HARD_DEBUG + +static ERTS_INLINE void +scnt_ix_inc(Sint *scnt, int six) +{ + scnt[six]++; +} + +#endif + +static ERTS_INLINE void +scnt_dec(Sint *scnt, int slot) +{ + scnt[slot >> ERTS_TW_SCNT_BITS]--; + ERTS_TW_ASSERT(scnt[slot >> ERTS_TW_SCNT_BITS] >= 0); +} + +static ERTS_INLINE void +scnt_ix_dec(Sint *scnt, int six) +{ + scnt[six]--; + ERTS_TW_ASSERT(scnt[six] >= 0); +} + +static ERTS_INLINE void +scnt_wheel_next(int *slotp, int *leftp, ErtsMonotonicTime *posp, + int *sixp, Sint *scnt, int first_slot, + int end_slot, ErtsMonotonicTime slot_sz) +{ + int slot = *slotp; + int left = *leftp; + int ix; + + ERTS_TW_ASSERT(*leftp >= 0); + + left--; + slot++; + if (slot == end_slot) + slot = first_slot; + ix = slot >> ERTS_TW_SCNT_BITS; + + while (!scnt[ix] && left > 0) { + int diff, old_slot = slot; + ix++; + slot = (ix << ERTS_TW_SCNT_BITS); + diff = slot - old_slot; + if (left < diff) { + slot = old_slot + left; + diff = left; + } + if (slot < end_slot) + left -= diff; + else { + left -= end_slot - old_slot; + slot = first_slot; + ix = slot >> ERTS_TW_SCNT_BITS; + } + } + + ERTS_TW_ASSERT(left >= -1); + + if (posp) + *posp += slot_sz * ((ErtsMonotonicTime) (*leftp - left)); + if (sixp) + *sixp = slot >> ERTS_TW_SCNT_BITS; + *leftp = left; + *slotp = slot; +} + + +static ERTS_INLINE void +scnt_soon_wheel_next(int *slotp, int *leftp, ErtsMonotonicTime *posp, + int *sixp, Sint *scnt) +{ + scnt_wheel_next(slotp, leftp, posp, sixp, scnt, + ERTS_TW_SOON_WHEEL_FIRST_SLOT, + ERTS_TW_SOON_WHEEL_END_SLOT, 1); +} + +static ERTS_INLINE void +scnt_later_wheel_next(int *slotp, int *leftp, ErtsMonotonicTime *posp, + int *sixp, Sint *scnt) +{ + scnt_wheel_next(slotp, leftp, posp, sixp, scnt, + ERTS_TW_LATER_WHEEL_FIRST_SLOT, + ERTS_TW_LATER_WHEEL_END_SLOT, + ERTS_TW_LATER_WHEEL_SLOT_SIZE); +} + + +static ERTS_INLINE int +soon_slot(ErtsMonotonicTime soon_pos) +{ + ErtsMonotonicTime slot = soon_pos; + slot &= ERTS_TW_SOON_WHEEL_MASK; + + ERTS_TW_ASSERT(ERTS_TW_SOON_WHEEL_FIRST_SLOT <= slot); + ERTS_TW_ASSERT(slot < ERTS_TW_SOON_WHEEL_END_SLOT); + + return (int) slot; +} + +static ERTS_INLINE int +later_slot(ErtsMonotonicTime later_pos) +{ + ErtsMonotonicTime slot = later_pos; + slot >>= ERTS_TW_LATER_WHEEL_SHIFT; + slot &= ERTS_TW_LATER_WHEEL_MASK; + slot += ERTS_TW_LATER_WHEEL_FIRST_SLOT; + + ERTS_TW_ASSERT(ERTS_TW_LATER_WHEEL_FIRST_SLOT <= slot); + ERTS_TW_ASSERT(slot < ERTS_TW_LATER_WHEEL_END_SLOT); + + return (int) slot; +} + +#ifdef ERTS_TW_HARD_DEBUG +#define ERTS_HARD_DBG_CHK_WHEELS(TIW, CHK_MIN_TPOS) \ + hrd_dbg_check_wheels((TIW), (CHK_MIN_TPOS)) +static void hrd_dbg_check_wheels(ErtsTimerWheel *tiw, int check_min_tpos); +#else +#define ERTS_HARD_DBG_CHK_WHEELS(TIW, CHK_MIN_TPOS) +#endif + +static ErtsMonotonicTime +find_next_timeout(ErtsSchedulerData *esdp, ErtsTimerWheel *tiw) +{ + int slot, slots; int true_min_timeout = 0; - ErtsMonotonicTime min_timeout, min_timeout_pos, slot_timeout_pos; + ErtsMonotonicTime min_timeout_pos; + + ERTS_TW_ASSERT(tiw->pos + ERTS_TW_LATER_WHEEL_SLOT_SIZE < tiw->later.pos + && tiw->later.pos <= tiw->pos + ERTS_TW_SOON_WHEEL_SIZE); + + ERTS_HARD_DBG_CHK_WHEELS(tiw, 0); + + ERTS_TW_ASSERT(tiw->yield_slot == ERTS_TW_SLOT_INACTIVE); if (tiw->nto == 0) { /* no timeouts in wheel */ - if (!search_all) - min_timeout_pos = tiw->pos; - else { - curr_time = erts_get_monotonic_time(esdp); - tiw->pos = min_timeout_pos = ERTS_MONOTONIC_TO_CLKTCKS(curr_time); - } - min_timeout_pos += ERTS_MONOTONIC_TO_CLKTCKS(ERTS_MONOTONIC_DAY); - goto found_next; + ErtsMonotonicTime curr_time = erts_get_monotonic_time(esdp); + tiw->pos = min_timeout_pos = ERTS_MONOTONIC_TO_CLKTCKS(curr_time); + tiw->later.pos = min_timeout_pos + ERTS_TW_SOON_WHEEL_SIZE; + tiw->later.pos &= ERTS_TW_LATER_WHEEL_POS_MASK; + min_timeout_pos += ERTS_CLKTCKS_WEEK; + goto done; } - slot_timeout_pos = min_timeout_pos = tiw->pos; - if (search_all) - min_timeout_pos += ERTS_MONOTONIC_TO_CLKTCKS(ERTS_MONOTONIC_DAY); - else - min_timeout_pos = ERTS_MONOTONIC_TO_CLKTCKS(curr_time + max_search_time); + ERTS_TW_ASSERT(tiw->soon.nto || tiw->later.nto); - start_ix = tiw_pos_ix = (int) (tiw->pos & (ERTS_TIW_SIZE-1)); + if (!tiw->soon.nto) { + ErtsMonotonicTime tpos, min_tpos; - do { - if (++slot_timeout_pos >= min_timeout_pos) - break; - - p = tiw->w[tiw_pos_ix]; - - if (p) { - ErtsTWheelTimer *end = p; - - do { - ErtsMonotonicTime timeout_pos; - timeout_pos = p->timeout_pos; - if (min_timeout_pos > timeout_pos) { - true_min_timeout = 1; - min_timeout_pos = timeout_pos; - if (min_timeout_pos <= slot_timeout_pos) - goto found_next; - } - p = p->next; - } while (p != end); - } + /* Search later wheel... */ + + min_tpos = tiw->later.min_tpos & ERTS_TW_LATER_WHEEL_POS_MASK; + + if (min_tpos <= tiw->later.pos) { + tpos = tiw->later.pos; + slots = ERTS_TW_LATER_WHEEL_SIZE; + } + else { + ErtsMonotonicTime tmp; + /* Don't inspect slots we know are empty... */ + tmp = min_tpos - tiw->later.pos; + tmp /= ERTS_TW_LATER_WHEEL_SLOT_SIZE; + if (tmp >= ERTS_TW_LATER_WHEEL_SIZE) { + /* Timeout more than one revolution ahead... */ + + /* Pre-timeout for move from later to soon wheel... */ + min_timeout_pos = min_tpos - ERTS_TW_LATER_WHEEL_SLOT_SIZE; + goto done; + } + tpos = min_tpos; + ERTS_TW_DBG_VERIFY_EMPTY_LATER_SLOTS(tiw, min_tpos); + slots = ERTS_TW_LATER_WHEEL_SIZE - ((int) tmp); + } + + slot = later_slot(tpos); + + /* + * We never search for an exact timeout in the + * later wheel, but instead settle for the first + * scnt range used. + */ + if (tiw->w[slot]) + true_min_timeout = 1; + else + scnt_later_wheel_next(&slot, &slots, &tpos, NULL, tiw->scnt); + + tiw->later.min_tpos = tpos; + tiw->later.min_tpos_slot = slot; + ERTS_TW_ASSERT(slot == later_slot(tpos)); + + /* Pre-timeout for move from later to soon wheel... */ + tpos -= ERTS_TW_LATER_WHEEL_SLOT_SIZE; + min_timeout_pos = tpos; + } + else { + ErtsMonotonicTime tpos; + /* Search soon wheel... */ + + min_timeout_pos = tiw->pos + ERTS_TW_SOON_WHEEL_SIZE; + + /* + * Besides inspecting the soon wheel we + * may also have to inspect two slots in the + * later wheel which potentially can trigger + * timeouts before timeouts in soon wheel... + */ + if (tiw->later.min_tpos > (tiw->later.pos + + 2*ERTS_TW_LATER_WHEEL_SLOT_SIZE)) { + ERTS_TW_DBG_VERIFY_EMPTY_LATER_SLOTS( + tiw, 2*ERTS_TW_LATER_WHEEL_SLOT_SIZE); + } + else { + int fslot; + tpos = tiw->later.pos; + tpos -= ERTS_TW_LATER_WHEEL_SLOT_SIZE; + fslot = later_slot(tiw->later.pos); + if (tiw->w[fslot]) + min_timeout_pos = tpos; + else { + tpos += ERTS_TW_LATER_WHEEL_SLOT_SIZE; + if (tpos < min_timeout_pos) { + fslot++; + if (fslot == ERTS_TW_LATER_WHEEL_END_SLOT) + fslot = ERTS_TW_LATER_WHEEL_FIRST_SLOT; + if (tiw->w[fslot]) + min_timeout_pos = tpos; + } + } + } + + if (tiw->soon.min_tpos <= tiw->pos) { + tpos = tiw->pos; + slots = ERTS_TW_SOON_WHEEL_SIZE; + } + else { + ErtsMonotonicTime tmp; + /* Don't inspect slots we know are empty... */ + tmp = tiw->soon.min_tpos - tiw->pos; + ERTS_TW_ASSERT(ERTS_TW_SOON_WHEEL_SIZE > tmp); + ERTS_TW_DBG_VERIFY_EMPTY_SOON_SLOTS(tiw, tiw->soon.min_tpos); + slots = ERTS_TW_SOON_WHEEL_SIZE - ((int) tmp); + tpos = tiw->soon.min_tpos; + } + + slot = soon_slot(tpos); + + /* find next non-empty slot */ + while (tpos < min_timeout_pos) { + if (tiw->w[slot]) { + ERTS_TW_ASSERT(tiw->w[slot]->timeout_pos == tpos); + min_timeout_pos = tpos; + break; + } + scnt_soon_wheel_next(&slot, &slots, &tpos, NULL, tiw->scnt); + } - tiw_pos_ix++; - if (tiw_pos_ix == ERTS_TIW_SIZE) - tiw_pos_ix = 0; - } while (start_ix != tiw_pos_ix); + tiw->soon.min_tpos = min_timeout_pos; + true_min_timeout = 1; + } + +done: { + ErtsMonotonicTime min_timeout; -found_next: + min_timeout = ERTS_CLKTCKS_TO_MONOTONIC(min_timeout_pos); + tiw->next_timeout_pos = min_timeout_pos; + tiw->next_timeout_time = min_timeout; + tiw->true_next_timeout_time = true_min_timeout; - min_timeout = ERTS_CLKTCKS_TO_MONOTONIC(min_timeout_pos); - tiw->next_timeout_time = min_timeout; - tiw->true_next_timeout_time = true_min_timeout; + ERTS_HARD_DBG_CHK_WHEELS(tiw, 1); - return min_timeout; + return min_timeout; + } } static ERTS_INLINE void insert_timer_into_slot(ErtsTimerWheel *tiw, int slot, ErtsTWheelTimer *p) { - ERTS_TW_ASSERT(slot >= 0); - ERTS_TW_ASSERT(slot < ERTS_TIW_SIZE); + ERTS_TW_ASSERT(ERTS_TW_SLOT_AT_ONCE <= slot + && slot < ERTS_TW_LATER_WHEEL_END_SLOT); p->slot = slot; if (!tiw->w[slot]) { tiw->w[slot] = p; @@ -223,55 +641,89 @@ insert_timer_into_slot(ErtsTimerWheel *tiw, int slot, ErtsTWheelTimer *p) prev->next = p; next->prev = p; } + if (slot == ERTS_TW_SLOT_AT_ONCE) + tiw->at_once.nto++; + else { + ErtsMonotonicTime tpos = p->timeout_pos; + if (slot < ERTS_TW_SOON_WHEEL_END_SLOT) { + ERTS_TW_ASSERT(p->timeout_pos < tiw->pos + ERTS_TW_SOON_WHEEL_SIZE); + tiw->soon.nto++; + if (tiw->soon.min_tpos > tpos) + tiw->soon.min_tpos = tpos; + } + else { + ERTS_TW_ASSERT(p->timeout_pos >= tiw->pos + ERTS_TW_SOON_WHEEL_SIZE); + tiw->later.nto++; + if (tiw->later.min_tpos > tpos) { + tiw->later.min_tpos = tpos; + tiw->later.min_tpos_slot = slot; + } + } + scnt_inc(tiw->scnt, slot); + } } static ERTS_INLINE void remove_timer(ErtsTimerWheel *tiw, ErtsTWheelTimer *p) { int slot = p->slot; - ERTS_TW_ASSERT(slot != ERTS_TWHEEL_SLOT_INACTIVE); - - if (slot >= 0) { - /* - * Timer in wheel or in circular - * list of timers currently beeing - * triggered (referred by sentinel). - */ - ERTS_TW_ASSERT(slot < ERTS_TIW_SIZE); - - if (p->next == p) { - ERTS_TW_ASSERT(tiw->w[slot] == p); - tiw->w[slot] = NULL; - } - else { - if (tiw->w[slot] == p) - tiw->w[slot] = p->next; - p->prev->next = p->next; - p->next->prev = p->prev; - } + int empty_slot; + ERTS_TW_ASSERT(slot != ERTS_TW_SLOT_INACTIVE); + + /* + * Timer is in circular list either referred to + * by at once slot, slot in soon wheel, slot + * in later wheel, or by sentinel (timers currently + * being triggered). + */ + ERTS_TW_ASSERT(ERTS_TW_SLOT_AT_ONCE <= slot + && slot < ERTS_TW_LATER_WHEEL_END_SLOT); + + if (p->next == p) { + /* Cannot be referred by sentinel, i.e. must be referred by slot... */ + ERTS_TW_ASSERT(tiw->w[slot] == p); + tiw->w[slot] = NULL; + empty_slot = 1; } else { - /* Timer in "at once" queue... */ - ERTS_TW_ASSERT(slot == ERTS_TWHEEL_SLOT_AT_ONCE); - if (p->prev) - p->prev->next = p->next; - else { - ERTS_TW_ASSERT(tiw->at_once.head == p); - tiw->at_once.head = p->next; - } - if (p->next) - p->next->prev = p->prev; - else { - ERTS_TW_ASSERT(tiw->at_once.tail == p); - tiw->at_once.tail = p->prev; - } + if (tiw->w[slot] == p) + tiw->w[slot] = p->next; + p->prev->next = p->next; + p->next->prev = p->prev; + empty_slot = 0; + } + if (slot == ERTS_TW_SLOT_AT_ONCE) { ERTS_TW_ASSERT(tiw->at_once.nto > 0); tiw->at_once.nto--; } - - p->slot = ERTS_TWHEEL_SLOT_INACTIVE; - - tiw->nto--; + else { + scnt_dec(tiw->scnt, slot); + if (slot < ERTS_TW_SOON_WHEEL_END_SLOT) { + if (empty_slot + && tiw->true_next_timeout_time + && p->timeout_pos == tiw->next_timeout_pos) { + tiw->true_next_timeout_time = 0; + } + if (--tiw->soon.nto == 0) + tiw->soon.min_tpos = ERTS_MAX_CLKTCKS; + } + else { + if (empty_slot + && tiw->true_next_timeout_time + && tiw->later.min_tpos_slot == slot) { + ErtsMonotonicTime tpos = tiw->later.min_tpos; + tpos &= ERTS_TW_LATER_WHEEL_POS_MASK; + tpos -= ERTS_TW_LATER_WHEEL_SLOT_SIZE; + if (tpos == tiw->next_timeout_pos) + tiw->true_next_timeout_time = 0; + } + if (--tiw->later.nto == 0) { + tiw->later.min_tpos = ERTS_MAX_CLKTCKS; + tiw->later.min_tpos_slot = ERTS_TW_LATER_WHEEL_END_SLOT; + } + } + } + p->slot = ERTS_TW_SLOT_INACTIVE; } ErtsMonotonicTime @@ -280,58 +732,26 @@ erts_check_next_timeout_time(ErtsSchedulerData *esdp) ErtsTimerWheel *tiw = esdp->timer_wheel; ErtsMonotonicTime time; ERTS_MSACC_DECLARE_CACHE_X(); + ERTS_TW_ASSERT(tiw->next_timeout_time + == ERTS_CLKTCKS_TO_MONOTONIC(tiw->next_timeout_pos)); if (tiw->true_next_timeout_time) - return tiw->next_timeout_time; + return tiw->next_timeout_time; /* known timeout... */ + if (tiw->next_timeout_pos > tiw->pos + ERTS_TW_SOON_WHEEL_SIZE) + return tiw->next_timeout_time; /* sufficiently later away... */ ERTS_MSACC_PUSH_AND_SET_STATE_CACHED_X(ERTS_MSACC_STATE_TIMERS); - time = find_next_timeout(esdp, tiw, 1, 0, 0); + time = find_next_timeout(esdp, tiw); ERTS_MSACC_POP_STATE_M_X(); return time; } -#ifndef ERTS_TW_DEBUG -#define ERTS_DBG_CHK_SAFE_TO_SKIP_TO(TIW, TO) ((void) 0) -#else -#define ERTS_DBG_CHK_SAFE_TO_SKIP_TO(TIW, TO) debug_check_safe_to_skip_to((TIW), (TO)) -static void -debug_check_safe_to_skip_to(ErtsTimerWheel *tiw, ErtsMonotonicTime skip_to_pos) -{ - int slots, ix; - ErtsTWheelTimer *tmr; - ErtsMonotonicTime tmp; - - ix = (int) (tiw->pos & (ERTS_TIW_SIZE-1)); - tmp = skip_to_pos - tiw->pos; - ERTS_TW_ASSERT(tmp >= 0); - if (tmp < (ErtsMonotonicTime) ERTS_TIW_SIZE) - slots = (int) tmp; - else - slots = ERTS_TIW_SIZE; - - while (slots > 0) { - tmr = tiw->w[ix]; - if (tmr) { - ErtsTWheelTimer *end = tmr; - do { - ERTS_TW_ASSERT(tmr->timeout_pos > skip_to_pos); - tmr = tmr->next; - } while (tmr != end); - } - ix++; - if (ix == ERTS_TIW_SIZE) - ix = 0; - slots--; - } -} -#endif - static ERTS_INLINE void timeout_timer(ErtsTWheelTimer *p) { ErlTimeoutProc timeout; void *arg; - p->slot = ERTS_TWHEEL_SLOT_INACTIVE; - timeout = p->u.func.timeout; - arg = p->u.func.arg; + p->slot = ERTS_TW_SLOT_INACTIVE; + timeout = p->timeout; + arg = p->arg; (*timeout)(arg); ASSERT_NO_LOCKED_LOCKS; } @@ -339,73 +759,108 @@ timeout_timer(ErtsTWheelTimer *p) void erts_bump_timers(ErtsTimerWheel *tiw, ErtsMonotonicTime curr_time) { - int tiw_pos_ix, slots, yielded_slot_restarted, yield_count; - ErtsMonotonicTime bump_to, tmp_slots, old_pos; + int slot, restarted, yield_count, slots, scnt_ix; + ErtsMonotonicTime bump_to; + Sint *scnt, *bump_scnt; ERTS_MSACC_PUSH_AND_SET_STATE_M_X(ERTS_MSACC_STATE_TIMERS); yield_count = ERTS_TWHEEL_BUMP_YIELD_LIMIT; + scnt = &tiw->scnt[0]; + bump_scnt = &tiw->bump_scnt[0]; + /* * In order to be fair we always continue with work * where we left off when restarting after a yield. */ - if (tiw->yield_slot >= 0) { - yielded_slot_restarted = 1; - tiw_pos_ix = tiw->yield_slot; - slots = tiw->yield_slots_left; + slot = tiw->yield_slot; + restarted = slot != ERTS_TW_SLOT_INACTIVE; + if (restarted) { bump_to = tiw->pos; - old_pos = tiw->yield_start_pos; - goto restart_yielded_slot; + if (slot >= ERTS_TW_LATER_WHEEL_FIRST_SLOT) + goto restart_yielded_later_slot; + tiw->yield_slot = ERTS_TW_SLOT_INACTIVE; + if (slot == ERTS_TW_SLOT_AT_ONCE) + goto restart_yielded_at_once_slot; + scnt_ix = scnt_get_ix(slot); + slots = tiw->yield_slots_left; + ASSERT(0 <= slots && slots <= ERTS_TW_SOON_WHEEL_SIZE); + goto restart_yielded_soon_slot; } do { - yielded_slot_restarted = 0; - + restarted = 0; bump_to = ERTS_MONOTONIC_TO_CLKTCKS(curr_time); + tiw->true_next_timeout_time = 1; + tiw->next_timeout_pos = bump_to; + tiw->next_timeout_time = ERTS_CLKTCKS_TO_MONOTONIC(bump_to); while (1) { ErtsTWheelTimer *p; - old_pos = tiw->pos; - if (tiw->nto == 0) { empty_wheel: - ERTS_DBG_CHK_SAFE_TO_SKIP_TO(tiw, bump_to); + ERTS_TW_DBG_VERIFY_EMPTY_SOON_SLOTS(tiw, bump_to); + ERTS_TW_DBG_VERIFY_EMPTY_LATER_SLOTS(tiw, bump_to); tiw->true_next_timeout_time = 0; - tiw->next_timeout_time = curr_time + ERTS_MONOTONIC_DAY; + tiw->next_timeout_pos = bump_to + ERTS_CLKTCKS_WEEK; + tiw->next_timeout_time = ERTS_CLKTCKS_TO_MONOTONIC(tiw->next_timeout_pos);; tiw->pos = bump_to; - tiw->yield_slot = ERTS_TWHEEL_SLOT_INACTIVE; + tiw->later.pos = bump_to + ERTS_TW_SOON_WHEEL_SIZE; + tiw->later.pos &= ERTS_TW_LATER_WHEEL_POS_MASK; + tiw->yield_slot = ERTS_TW_SLOT_INACTIVE; ERTS_MSACC_POP_STATE_M_X(); return; } - p = tiw->at_once.head; - while (p) { - if (--yield_count <= 0) { - ERTS_TW_ASSERT(tiw->nto > 0); - ERTS_TW_ASSERT(tiw->at_once.nto > 0); - tiw->yield_slot = ERTS_TWHEEL_SLOT_AT_ONCE; - tiw->true_next_timeout_time = 1; - tiw->next_timeout_time = ERTS_CLKTCKS_TO_MONOTONIC(old_pos); - ERTS_MSACC_POP_STATE_M_X(); - return; - } + p = tiw->w[ERTS_TW_SLOT_AT_ONCE]; + + if (p) { + + if (p->next == p) { + ERTS_TW_ASSERT(tiw->sentinel.next == &tiw->sentinel); + ERTS_TW_ASSERT(tiw->sentinel.prev == &tiw->sentinel); + } + else { + tiw->sentinel.next = p->next; + tiw->sentinel.prev = p->prev; + tiw->sentinel.next->prev = &tiw->sentinel; + tiw->sentinel.prev->next = &tiw->sentinel; + } + tiw->w[ERTS_TW_SLOT_AT_ONCE] = NULL; + + while (1) { + ERTS_TW_ASSERT(tiw->nto > 0); + ERTS_TW_ASSERT(tiw->at_once.nto > 0); + tiw->nto--; + tiw->at_once.nto--; + + timeout_timer(p); + + yield_count -= ERTS_TW_COST_TIMEOUT; - ERTS_TW_ASSERT(tiw->nto > 0); - ERTS_TW_ASSERT(tiw->at_once.nto > 0); - tiw->nto--; - tiw->at_once.nto--; - tiw->at_once.head = p->next; - if (p->next) - p->next->prev = NULL; - else - tiw->at_once.tail = NULL; + restart_yielded_at_once_slot: - timeout_timer(p); + p = tiw->sentinel.next; + if (p == &tiw->sentinel) { + ERTS_TW_ASSERT(tiw->sentinel.prev == &tiw->sentinel); + break; + } + + if (yield_count <= 0) { + ERTS_TW_ASSERT(tiw->nto > 0); + ERTS_TW_ASSERT(tiw->at_once.nto > 0); + tiw->yield_slot = ERTS_TW_SLOT_AT_ONCE; + ERTS_MSACC_POP_STATE_M_X(); + return; /* Yield! */ + } + + tiw->sentinel.next = p->next; + p->next->prev = &tiw->sentinel; + } - p = tiw->at_once.head; } if (tiw->pos >= bump_to) { @@ -416,39 +871,66 @@ erts_bump_timers(ErtsTimerWheel *tiw, ErtsMonotonicTime curr_time) if (tiw->nto == 0) goto empty_wheel; - if (tiw->true_next_timeout_time) { - ErtsMonotonicTime skip_until_pos; + /* + * Save slot counts in bump operation local + * array. + * + * The amount of timers to trigger (or move) + * will only decrease from now until we have + * completed this bump operation (even if we + * yield in the middle of it). + * + * The amount of timers in the wheels may + * however increase due to timers being set + * by timeout callbacks. + */ + sys_memcpy((void *) bump_scnt, (void *) scnt, + sizeof(Sint) * ERTS_TW_SCNT_SIZE); + + if (tiw->soon.min_tpos > tiw->pos) { + ErtsMonotonicTime skip_until_pos = tiw->soon.min_tpos; + /* * No need inspecting slots where we know no timeouts * to trigger should reside. */ - skip_until_pos = ERTS_MONOTONIC_TO_CLKTCKS(tiw->next_timeout_time); if (skip_until_pos > bump_to) skip_until_pos = bump_to; skip_until_pos--; if (skip_until_pos > tiw->pos) { - ERTS_DBG_CHK_SAFE_TO_SKIP_TO(tiw, skip_until_pos); - + ERTS_TW_DBG_VERIFY_EMPTY_SOON_SLOTS(tiw, skip_until_pos); tiw->pos = skip_until_pos; } } - tiw_pos_ix = (int) ((tiw->pos+1) & (ERTS_TIW_SIZE-1)); - tmp_slots = (bump_to - tiw->pos); - if (tmp_slots < (ErtsMonotonicTime) ERTS_TIW_SIZE) - slots = (int) tmp_slots; - else - slots = ERTS_TIW_SIZE; + { + ErtsMonotonicTime tmp_slots = bump_to - tiw->pos; + tmp_slots = (bump_to - tiw->pos); + if (tmp_slots < ERTS_TW_SOON_WHEEL_SIZE) + slots = (int) tmp_slots; + else + slots = ERTS_TW_SOON_WHEEL_SIZE; + } + slot = soon_slot(tiw->pos+1); tiw->pos = bump_to; + tiw->next_timeout_pos = bump_to; + tiw->next_timeout_time = ERTS_CLKTCKS_TO_MONOTONIC(bump_to); + + scnt_ix = scnt_get_ix(slot); + + /* Timeout timers in soon wheel */ while (slots > 0) { - p = tiw->w[tiw_pos_ix]; + yield_count -= ERTS_TW_COST_SLOT; + + p = tiw->w[slot]; if (p) { + /* timeout callback need tiw->pos to be up to date */ if (p->next == p) { ERTS_TW_ASSERT(tiw->sentinel.next == &tiw->sentinel); ERTS_TW_ASSERT(tiw->sentinel.prev == &tiw->sentinel); @@ -459,22 +941,28 @@ erts_bump_timers(ErtsTimerWheel *tiw, ErtsMonotonicTime curr_time) tiw->sentinel.next->prev = &tiw->sentinel; tiw->sentinel.prev->next = &tiw->sentinel; } - tiw->w[tiw_pos_ix] = NULL; + tiw->w[slot] = NULL; while (1) { - if (p->timeout_pos > bump_to) { - /* Very unusual case... */ - ++yield_count; - insert_timer_into_slot(tiw, tiw_pos_ix, p); - } - else { - /* Normal case... */ - timeout_timer(p); - tiw->nto--; - } - - restart_yielded_slot: + ERTS_TW_ASSERT(ERTS_TW_SOON_WHEEL_FIRST_SLOT <= p->slot + && p->slot < ERTS_TW_SOON_WHEEL_END_SLOT); + if (--tiw->soon.nto == 0) + tiw->soon.min_tpos = ERTS_MAX_CLKTCKS; + scnt_ix_dec(scnt, scnt_ix); + if (p->timeout_pos <= bump_to) { + timeout_timer(p); + tiw->nto--; + scnt_ix_dec(bump_scnt, scnt_ix); + yield_count -= ERTS_TW_COST_TIMEOUT; + } + else { + /* uncommon case */ + insert_timer_into_slot(tiw, slot, p); + yield_count -= ERTS_TW_COST_SLOT_MOVE; + } + + restart_yielded_soon_slot: p = tiw->sentinel.next; if (p == &tiw->sentinel) { @@ -482,12 +970,9 @@ erts_bump_timers(ErtsTimerWheel *tiw, ErtsMonotonicTime curr_time) break; } - if (--yield_count <= 0) { - tiw->true_next_timeout_time = 1; - tiw->next_timeout_time = ERTS_CLKTCKS_TO_MONOTONIC(old_pos); - tiw->yield_slot = tiw_pos_ix; + if (yield_count <= 0) { + tiw->yield_slot = slot; tiw->yield_slots_left = slots; - tiw->yield_start_pos = old_pos; ERTS_MSACC_POP_STATE_M_X(); return; /* Yield! */ } @@ -496,24 +981,166 @@ erts_bump_timers(ErtsTimerWheel *tiw, ErtsMonotonicTime curr_time) p->next->prev = &tiw->sentinel; } } - tiw_pos_ix++; - if (tiw_pos_ix == ERTS_TIW_SIZE) - tiw_pos_ix = 0; - slots--; + + scnt_soon_wheel_next(&slot, &slots, NULL, &scnt_ix, bump_scnt); } + + if (ERTS_TW_BUMP_LATER_WHEEL(tiw)) { + restart_yielded_later_slot: + if (bump_later_wheel(tiw, &yield_count)) + return; /* Yield! */ + } } - } while (yielded_slot_restarted); + } while (restarted); - tiw->yield_slot = ERTS_TWHEEL_SLOT_INACTIVE; tiw->true_next_timeout_time = 0; - tiw->next_timeout_time = curr_time + ERTS_MONOTONIC_DAY; + ERTS_TW_ASSERT(tiw->next_timeout_pos == bump_to); - /* Search at most two seconds ahead... */ - (void) find_next_timeout(NULL, tiw, 0, curr_time, ERTS_SEC_TO_MONOTONIC(2)); + (void) find_next_timeout(NULL, tiw); ERTS_MSACC_POP_STATE_M_X(); } +static int +bump_later_wheel(ErtsTimerWheel *tiw, int *ycount_p) +{ + ErtsMonotonicTime cpos = tiw->pos; + ErtsMonotonicTime later_pos = tiw->later.pos; + int ycount = *ycount_p; + int slots, fslot, scnt_ix; + Sint *scnt, *bump_scnt; + + scnt = &tiw->scnt[0]; + bump_scnt = &tiw->bump_scnt[0]; + + ERTS_HARD_DBG_CHK_WHEELS(tiw, 0); + + if (tiw->yield_slot >= ERTS_TW_LATER_WHEEL_FIRST_SLOT) { + fslot = tiw->yield_slot; + scnt_ix = scnt_get_ix(fslot); + slots = tiw->yield_slots_left; + ASSERT(0 <= slots && slots <= ERTS_TW_LATER_WHEEL_SIZE); + tiw->yield_slot = ERTS_TW_SLOT_INACTIVE; + goto restart_yielded_slot; + } + else { + ErtsMonotonicTime end_later_pos, tmp_slots, min_tpos; + + min_tpos = tiw->later.min_tpos & ERTS_TW_LATER_WHEEL_POS_MASK; + end_later_pos = cpos + ERTS_TW_SOON_WHEEL_SIZE; + end_later_pos &= ERTS_TW_LATER_WHEEL_POS_MASK; + + /* Skip known empty slots... */ + if (min_tpos > later_pos) { + if (min_tpos > end_later_pos) { + ERTS_TW_DBG_VERIFY_EMPTY_LATER_SLOTS(tiw, end_later_pos); + tiw->later.pos = end_later_pos; + goto done; + } + later_pos = min_tpos; + ERTS_TW_DBG_VERIFY_EMPTY_LATER_SLOTS(tiw, later_pos); + } + + tmp_slots = end_later_pos; + tmp_slots -= later_pos; + tmp_slots /= ERTS_TW_LATER_WHEEL_SLOT_SIZE; + if (tmp_slots < ERTS_TW_LATER_WHEEL_SIZE) + slots = (int) tmp_slots; + else + slots = ERTS_TW_LATER_WHEEL_SIZE; + + fslot = later_slot(later_pos); + scnt_ix = scnt_get_ix(fslot); + + tiw->later.pos = end_later_pos; + } + + while (slots > 0) { + ErtsTWheelTimer *p; + + ycount -= ERTS_TW_COST_SLOT; + + p = tiw->w[fslot]; + + if (p) { + + if (p->next == p) { + ERTS_TW_ASSERT(tiw->sentinel.next == &tiw->sentinel); + ERTS_TW_ASSERT(tiw->sentinel.prev == &tiw->sentinel); + } + else { + tiw->sentinel.next = p->next; + tiw->sentinel.prev = p->prev; + tiw->sentinel.next->prev = &tiw->sentinel; + tiw->sentinel.prev->next = &tiw->sentinel; + } + tiw->w[fslot] = NULL; + + while (1) { + ErtsMonotonicTime tpos = p->timeout_pos; + + ERTS_TW_ASSERT(p->slot == fslot); + + if (--tiw->later.nto == 0) { + tiw->later.min_tpos = ERTS_MAX_CLKTCKS; + tiw->later.min_tpos_slot = ERTS_TW_LATER_WHEEL_END_SLOT; + } + scnt_ix_dec(scnt, scnt_ix); + + if (tpos >= tiw->later.pos + ERTS_TW_LATER_WHEEL_SLOT_SIZE) { + /* keep in later slot; very uncommon... */ + insert_timer_into_slot(tiw, fslot, p); + ycount -= ERTS_TW_COST_SLOT_MOVE; + } + else { + scnt_ix_dec(bump_scnt, scnt_ix); + ERTS_TW_ASSERT(tpos < cpos + ERTS_TW_SOON_WHEEL_SIZE); + if (tpos > cpos) { + /* move into soon wheel */ + insert_timer_into_slot(tiw, soon_slot(tpos), p); + ycount -= ERTS_TW_COST_SLOT_MOVE; + } + else { + /* trigger at once */ + timeout_timer(p); + tiw->nto--; + ycount -= ERTS_TW_COST_TIMEOUT; + } + } + + restart_yielded_slot: + + p = tiw->sentinel.next; + if (p == &tiw->sentinel) { + ERTS_TW_ASSERT(tiw->sentinel.prev == &tiw->sentinel); + break; + } + + if (ycount < 0) { + tiw->yield_slot = fslot; + tiw->yield_slots_left = slots; + *ycount_p = 0; + ERTS_HARD_DBG_CHK_WHEELS(tiw, 0); + return 1; /* Yield! */ + } + + tiw->sentinel.next = p->next; + p->next->prev = &tiw->sentinel; + } + } + + scnt_later_wheel_next(&fslot, &slots, NULL, &scnt_ix, bump_scnt); + } + +done: + + ERTS_HARD_DBG_CHK_WHEELS(tiw, 0); + + *ycount_p = ycount; + + return 0; +} + Uint erts_timer_wheel_memory_size(void) { @@ -526,25 +1153,51 @@ erts_create_timer_wheel(ErtsSchedulerData *esdp) ErtsMonotonicTime mtime; int i; ErtsTimerWheel *tiw; + + /* Some compile time sanity checks... */ + + /* Slots... */ + ERTS_CT_ASSERT(ERTS_TW_SLOT_AT_ONCE == -1); + ERTS_CT_ASSERT(ERTS_TW_SLOT_INACTIVE < ERTS_TW_SLOT_AT_ONCE); + ERTS_CT_ASSERT(ERTS_TW_SLOT_AT_ONCE + 1 == ERTS_TW_SOON_WHEEL_FIRST_SLOT); + ERTS_CT_ASSERT(ERTS_TW_SOON_WHEEL_FIRST_SLOT < ERTS_TW_SOON_WHEEL_END_SLOT); + ERTS_CT_ASSERT(ERTS_TW_SOON_WHEEL_END_SLOT == ERTS_TW_LATER_WHEEL_FIRST_SLOT); + ERTS_CT_ASSERT(ERTS_TW_LATER_WHEEL_FIRST_SLOT < ERTS_TW_LATER_WHEEL_END_SLOT); + + /* Both wheel sizes should be a powers of 2 */ + ERTS_CT_ASSERT(ERTS_TW_SOON_WHEEL_SIZE + && !(ERTS_TW_SOON_WHEEL_SIZE & (ERTS_TW_SOON_WHEEL_SIZE-1))); + ERTS_CT_ASSERT(ERTS_TW_LATER_WHEEL_SIZE + && !(ERTS_TW_LATER_WHEEL_SIZE & (ERTS_TW_LATER_WHEEL_SIZE-1))); + tiw = erts_alloc_permanent_cache_aligned(ERTS_ALC_T_TIMER_WHEEL, sizeof(ErtsTimerWheel)); - for(i = 0; i < ERTS_TIW_SIZE; i++) + tiw->w = &tiw->slots[1]; + for(i = ERTS_TW_SLOT_AT_ONCE; i < ERTS_TW_LATER_WHEEL_END_SLOT; i++) tiw->w[i] = NULL; + for (i = 0; i < ERTS_TW_SCNT_SIZE; i++) + tiw->scnt[i] = 0; + mtime = erts_get_monotonic_time(esdp); tiw->pos = ERTS_MONOTONIC_TO_CLKTCKS(mtime); tiw->nto = 0; - tiw->at_once.head = NULL; - tiw->at_once.tail = NULL; tiw->at_once.nto = 0; - tiw->yield_slot = ERTS_TWHEEL_SLOT_INACTIVE; + tiw->soon.min_tpos = ERTS_MAX_CLKTCKS; + tiw->soon.nto = 0; + tiw->later.min_tpos = ERTS_MAX_CLKTCKS; + tiw->later.min_tpos_slot = ERTS_TW_LATER_WHEEL_END_SLOT; + tiw->later.pos = tiw->pos + ERTS_TW_SOON_WHEEL_SIZE; + tiw->later.pos &= ERTS_TW_LATER_WHEEL_POS_MASK; + tiw->later.nto = 0; + tiw->yield_slot = ERTS_TW_SLOT_INACTIVE; tiw->true_next_timeout_time = 0; - tiw->next_timeout_time = mtime + ERTS_MONOTONIC_DAY; + tiw->next_timeout_pos = tiw->pos + ERTS_CLKTCKS_WEEK; + tiw->next_timeout_time = ERTS_CLKTCKS_TO_MONOTONIC(tiw->next_timeout_pos); tiw->sentinel.next = &tiw->sentinel; tiw->sentinel.prev = &tiw->sentinel; - tiw->sentinel.u.func.timeout = NULL; - tiw->sentinel.u.func.cancel = NULL; - tiw->sentinel.u.func.arg = NULL; + tiw->sentinel.timeout = NULL; + tiw->sentinel.arg = NULL; return tiw; } @@ -577,53 +1230,56 @@ erts_init_time(int time_correction, ErtsTimeWarpMode time_warp_mode) void erts_twheel_set_timer(ErtsTimerWheel *tiw, ErtsTWheelTimer *p, ErlTimeoutProc timeout, - ErlCancelProc cancel, void *arg, - ErtsMonotonicTime timeout_pos) + void *arg, ErtsMonotonicTime timeout_pos) { - ErtsMonotonicTime timeout_time; + int slot; ERTS_MSACC_PUSH_AND_SET_STATE_M_X(ERTS_MSACC_STATE_TIMERS); - p->u.func.timeout = timeout; - p->u.func.cancel = cancel; - p->u.func.arg = arg; + p->timeout = timeout; + p->arg = arg; + + ERTS_TW_ASSERT(p->slot == ERTS_TW_SLOT_INACTIVE); - ERTS_TW_ASSERT(p->slot == ERTS_TWHEEL_SLOT_INACTIVE); + tiw->nto++; + /* calculate slot */ if (timeout_pos <= tiw->pos) { - tiw->nto++; - tiw->at_once.nto++; - p->next = NULL; - p->prev = tiw->at_once.tail; - if (tiw->at_once.tail) { - ERTS_TW_ASSERT(tiw->at_once.head); - tiw->at_once.tail->next = p; - } - else { - ERTS_TW_ASSERT(!tiw->at_once.head); - tiw->at_once.head = p; - } - tiw->at_once.tail = p; - p->timeout_pos = tiw->pos; - p->slot = ERTS_TWHEEL_SLOT_AT_ONCE; - timeout_time = ERTS_CLKTCKS_TO_MONOTONIC(tiw->pos); + /* at once */ + p->timeout_pos = timeout_pos = tiw->pos; + slot = ERTS_TW_SLOT_AT_ONCE; + } + else if (timeout_pos < tiw->pos + ERTS_TW_SOON_WHEEL_SIZE) { + /* soon wheel */ + p->timeout_pos = timeout_pos; + slot = soon_slot(timeout_pos); + if (tiw->soon.min_tpos > timeout_pos) + tiw->soon.min_tpos = timeout_pos; } else { - int slot; - - /* calculate slot */ - slot = (int) (timeout_pos & (ERTS_TIW_SIZE-1)); - - insert_timer_into_slot(tiw, slot, p); - - tiw->nto++; - - timeout_time = ERTS_CLKTCKS_TO_MONOTONIC(timeout_pos); - p->timeout_pos = timeout_pos; + /* later wheel */ + p->timeout_pos = timeout_pos; + slot = later_slot(timeout_pos); + + /* + * Next timeout due to this timeout + * should be in good time before the + * actual timeout (one later wheel slot + * size). This, in order to move it + * from the later wheel to the soon + * wheel. + */ + timeout_pos &= ERTS_TW_LATER_WHEEL_POS_MASK; + timeout_pos -= ERTS_TW_LATER_WHEEL_SLOT_SIZE; } - if (timeout_time < tiw->next_timeout_time) { + insert_timer_into_slot(tiw, slot, p); + + if (timeout_pos <= tiw->next_timeout_pos) { tiw->true_next_timeout_time = 1; - tiw->next_timeout_time = timeout_time; + if (timeout_pos < tiw->next_timeout_pos) { + tiw->next_timeout_pos = timeout_pos; + tiw->next_timeout_time = ERTS_CLKTCKS_TO_MONOTONIC(timeout_pos); + } } ERTS_MSACC_POP_STATE_M_X(); } @@ -631,15 +1287,10 @@ erts_twheel_set_timer(ErtsTimerWheel *tiw, void erts_twheel_cancel_timer(ErtsTimerWheel *tiw, ErtsTWheelTimer *p) { - if (p->slot != ERTS_TWHEEL_SLOT_INACTIVE) { - ErlCancelProc cancel; - void *arg; + if (p->slot != ERTS_TW_SLOT_INACTIVE) { ERTS_MSACC_PUSH_AND_SET_STATE_M_X(ERTS_MSACC_STATE_TIMERS); remove_timer(tiw, p); - cancel = p->u.func.cancel; - arg = p->u.func.arg; - if (cancel) - (*cancel)(arg); + tiw->nto--; ERTS_MSACC_POP_STATE_M_X(); } } @@ -657,22 +1308,17 @@ erts_twheel_debug_foreach(ErtsTimerWheel *tiw, tmr = tiw->sentinel.next; while (tmr != &tiw->sentinel) { - if (tmr->u.func.timeout == tclbk) - (*func)(arg, tmr->timeout_pos, tmr->u.func.arg); + if (tmr->timeout == tclbk) + (*func)(arg, tmr->timeout_pos, tmr->arg); tmr = tmr->next; } - for (tmr = tiw->at_once.head; tmr; tmr = tmr->next) { - if (tmr->u.func.timeout == tclbk) - (*func)(arg, tmr->timeout_pos, tmr->u.func.arg); - } - - for (ix = 0; ix < ERTS_TIW_SIZE; ix++) { + for (ix = ERTS_TW_SLOT_AT_ONCE; ix < ERTS_TW_LATER_WHEEL_END_SLOT; ix++) { tmr = tiw->w[ix]; if (tmr) { do { - if (tmr->u.func.timeout == tclbk) - (*func)(arg, tmr->timeout_pos, tmr->u.func.arg); + if (tmr->timeout == tclbk) + (*func)(arg, tmr->timeout_pos, tmr->arg); tmr = tmr->next; } while (tmr != tiw->w[ix]); } @@ -680,35 +1326,198 @@ erts_twheel_debug_foreach(ErtsTimerWheel *tiw, } #ifdef ERTS_TW_DEBUG -void erts_p_slpq(void) + +void +dbg_verify_empty_soon_slots(ErtsTimerWheel *tiw, ErtsMonotonicTime to_pos) { - erts_printf("Not yet implemented...\n"); -#if 0 - ErtsMonotonicTime current_time = erts_get_monotonic_time(NULL); - int i; - ErtsTWheelTimer* p; - - /* print the whole wheel, starting at the current position */ - erts_printf("\ncurrent time = %bps tiw_pos = %d tiw_nto %d\n", - current_time, tiw->pos, tiw->nto); - i = tiw->pos; - if (tiw->w[i] != NULL) { - erts_printf("%d:\n", i); - for(p = tiw->w[i]; p != NULL; p = p->next) { - erts_printf(" (timeout time %bps, slot %d)\n", - ERTS_CLKTCKS_TO_MONOTONIC(p->timeout_pos), - p->slot); - } + int ix; + ErtsMonotonicTime tmp; + + ix = soon_slot(tiw->pos); + tmp = to_pos; + if (tmp > tiw->pos) { + int slots; + tmp -= tiw->pos; + ERTS_TW_ASSERT(tmp > 0); + if (tmp < (ErtsMonotonicTime) ERTS_TW_SOON_WHEEL_SIZE) + slots = (int) tmp; + else + slots = ERTS_TW_SOON_WHEEL_SIZE; + + while (slots > 0) { + ERTS_TW_ASSERT(!tiw->w[ix]); + ix++; + if (ix == ERTS_TW_SOON_WHEEL_END_SLOT) + ix = ERTS_TW_SOON_WHEEL_FIRST_SLOT; + slots--; + } + } +} + +void +dbg_verify_empty_later_slots(ErtsTimerWheel *tiw, ErtsMonotonicTime to_pos) +{ + int ix; + ErtsMonotonicTime tmp; + + ix = later_slot(tiw->later.pos); + tmp = to_pos; + tmp &= ERTS_TW_LATER_WHEEL_POS_MASK; + if (tmp > tiw->later.pos) { + int slots; + tmp -= tiw->later.pos; + tmp /= ERTS_TW_LATER_WHEEL_SLOT_SIZE; + ERTS_TW_ASSERT(tmp > 0); + if (tmp < (ErtsMonotonicTime) ERTS_TW_LATER_WHEEL_SIZE) + slots = (int) tmp; + else + slots = ERTS_TW_LATER_WHEEL_SIZE; + + while (slots > 0) { + ErtsTWheelTimer *tmr = tiw->w[ix]; + if (tmr) { + ErtsTWheelTimer *end = tmr; + do { + ERTS_TW_ASSERT(tmr->timeout_pos > to_pos); + tmr = tmr->next; + } while (tmr != end); + } + ix++; + if (ix == ERTS_TW_LATER_WHEEL_END_SLOT) + ix = ERTS_TW_LATER_WHEEL_FIRST_SLOT; + slots--; + } + } +} + +#endif /* ERTS_TW_DEBUG */ + +#ifdef ERTS_TW_HARD_DEBUG + +static void +hrd_dbg_check_wheels(ErtsTimerWheel *tiw, int check_min_tpos) +{ + int ix, six, soon_tmo, later_tmo, at_once_tmo, + scnt_slot, scnt_slots, scnt_six; + ErtsMonotonicTime min_tpos; + Sint scnt[ERTS_TW_SCNT_SIZE]; + ErtsTWheelTimer *p; + + for (six = 0; six < ERTS_TW_SCNT_SIZE; six++) + scnt[six] = 0; + + min_tpos = ERTS_MONOTONIC_TO_CLKTCKS(tiw->next_timeout_time); + + at_once_tmo = 0; + p = tiw->w[ERTS_TW_SLOT_AT_ONCE]; + if (p) { + ErtsTWheelTimer *first = p; + do { + at_once_tmo++; + ERTS_TW_ASSERT(p->slot == ERTS_TW_SLOT_AT_ONCE); + ERTS_TW_ASSERT(p->timeout_pos <= tiw->pos); + ERTS_TW_ASSERT(!check_min_tpos || tiw->pos >= min_tpos); + ERTS_TW_ASSERT(p->next->prev == p); + p = p->next; + } while (p != first); } - for(i = ((i+1) & (ERTS_TIW_SIZE-1)); i != (tiw->pos & (ERTS_TIW_SIZE-1)); i = ((i+1) & (ERTS_TIW_SIZE-1))) { - if (tiw->w[i] != NULL) { - erts_printf("%d:\n", i); - for(p = tiw->w[i]; p != NULL; p = p->next) { - erts_printf(" (timeout time %bps, slot %d)\n", - ERTS_CLKTCKS_TO_MONOTONIC(p->timeout_pos), p->slot); - } - } + + soon_tmo = 0; + scnt_slot = ERTS_TW_SOON_WHEEL_END_SLOT-1; + scnt_slots = ERTS_TW_SOON_WHEEL_SIZE; + scnt_six = 0; + scnt_soon_wheel_next(&scnt_slot, &scnt_slots, + NULL, &scnt_six, tiw->scnt); + for (ix = ERTS_TW_SOON_WHEEL_FIRST_SLOT; + ix < ERTS_TW_SOON_WHEEL_END_SLOT; + ix++) { + p = tiw->w[ix]; + six = scnt_get_ix(ix); + ERTS_TW_ASSERT(!p || six == scnt_six); + if (p) { + ErtsTWheelTimer *first = p; + do { + ErtsMonotonicTime tpos = p->timeout_pos; + soon_tmo++; + scnt_ix_inc(scnt, six); + ERTS_TW_ASSERT(p->slot == ix); + ERTS_TW_ASSERT(ix == soon_slot(tpos)); + ERTS_TW_ASSERT(p->timeout_pos < tiw->pos + ERTS_TW_SOON_WHEEL_SIZE); + ERTS_TW_ASSERT(!check_min_tpos || tpos >= min_tpos); + ERTS_TW_ASSERT(p->next->prev == p); + p = p->next; + } while (p != first); + } + if (ix == scnt_slot) + scnt_soon_wheel_next(&scnt_slot, &scnt_slots, + NULL, &scnt_six, tiw->scnt); } -#endif + + later_tmo = 0; + scnt_slot = ERTS_TW_SOON_WHEEL_END_SLOT-1; + scnt_slots = ERTS_TW_SOON_WHEEL_SIZE; + scnt_six = 0; + scnt_later_wheel_next(&scnt_slot, &scnt_slots, + NULL, &scnt_six, tiw->scnt); + for (ix = ERTS_TW_LATER_WHEEL_FIRST_SLOT; + ix < ERTS_TW_LATER_WHEEL_END_SLOT; + ix++) { + p = tiw->w[ix]; + six = scnt_get_ix(ix); + ERTS_TW_ASSERT(!p || six == scnt_six); + if (p) { + ErtsTWheelTimer *first = p; + six = scnt_get_ix(ix); + do { + ErtsMonotonicTime tpos = p->timeout_pos; + later_tmo++; + scnt_ix_inc(scnt, six); + ERTS_TW_ASSERT(p->slot == ix); + ERTS_TW_ASSERT(later_slot(tpos) == ix); + tpos &= ERTS_TW_LATER_WHEEL_POS_MASK; + tpos -= ERTS_TW_LATER_WHEEL_SLOT_SIZE; + ERTS_TW_ASSERT(!check_min_tpos || tpos >= min_tpos); + ERTS_TW_ASSERT(p->next->prev == p); + p = p->next; + } while (p != first); + } + if (ix == scnt_slot) + scnt_later_wheel_next(&scnt_slot, &scnt_slots, + NULL, &scnt_six, tiw->scnt); + } + + if (tiw->yield_slot != ERTS_TW_SLOT_INACTIVE) { + p = tiw->sentinel.next; + ix = tiw->yield_slot; + while (p != &tiw->sentinel) { + ErtsMonotonicTime tpos = p->timeout_pos; + ERTS_TW_ASSERT(ix == p->slot); + if (ix == ERTS_TW_SLOT_AT_ONCE) + at_once_tmo++; + else { + scnt_inc(scnt, ix); + if (ix >= ERTS_TW_LATER_WHEEL_FIRST_SLOT) { + later_tmo++; + ERTS_TW_ASSERT(ix == later_slot(tpos)); + } + else { + soon_tmo++; + ERTS_TW_ASSERT(ix == (tpos & ERTS_TW_SOON_WHEEL_MASK)); + ERTS_TW_ASSERT(tpos < tiw->pos + ERTS_TW_SOON_WHEEL_SIZE); + } + p = p->next; + } + } + } + + + ERTS_TW_ASSERT(tiw->at_once.nto == at_once_tmo); + ERTS_TW_ASSERT(tiw->soon.nto == soon_tmo); + ERTS_TW_ASSERT(tiw->later.nto == later_tmo); + ERTS_TW_ASSERT(tiw->nto == soon_tmo + later_tmo + at_once_tmo); + + for (six = 0; six < ERTS_TW_SCNT_SIZE; six++) + ERTS_TW_ASSERT(scnt[six] == tiw->scnt[six]); } -#endif /* ERTS_TW_DEBUG */ + +#endif /* ERTS_TW_HARD_DEBUG */ diff --git a/erts/emulator/beam/utils.c b/erts/emulator/beam/utils.c index e2b5434284..9263798a28 100644 --- a/erts/emulator/beam/utils.c +++ b/erts/emulator/beam/utils.c @@ -4835,6 +4835,53 @@ Uint64 erts_timestamp_millis(void) #endif } +void * +erts_calc_stacklimit(char *prev_c, UWord stacksize) +{ + /* + * We *don't* want this function inlined, i.e., it is + * risky to call this function from another function + * in utils.c + */ + + UWord pagesize = erts_sys_get_page_size(); + char c; + char *start; + if (&c > prev_c) { + start = (char *) ((((UWord) prev_c) / pagesize) * pagesize); + return (void *) (start + stacksize); + } + else { + start = (char *) (((((UWord) prev_c) - 1) / pagesize + 1) * pagesize); + return (void *) (start - stacksize); + } +} + +/* + * erts_check_below_limit() and + * erts_check_above_limit() are put + * in utils.c in order to prevent + * inlining. + */ + +int +erts_check_below_limit(char *ptr, char *limit) +{ + return ptr < limit; +} + +int +erts_check_above_limit(char *ptr, char *limit) +{ + return ptr > limit; +} + +void * +erts_ptr_id(void *ptr) +{ + return ptr; +} + #ifdef DEBUG /* * Handy functions when using a debugger - don't use in the code! |