From 9fa33de8e1654484851555cd54b0b5118eb32069 Mon Sep 17 00:00:00 2001 From: Sverker Eriksson Date: Mon, 24 Jan 2011 14:46:06 +0100 Subject: HALFWORD ETS Further match spec optimization to minimize copying and garbage --- erts/emulator/beam/erl_db.c | 8 +- erts/emulator/beam/erl_db_hash.c | 28 +-- erts/emulator/beam/erl_db_tree.c | 16 +- erts/emulator/beam/erl_db_util.c | 391 +++++++++++++++++++++++++-------------- erts/emulator/beam/erl_db_util.h | 10 +- erts/emulator/beam/erl_trace.c | 6 +- erts/emulator/beam/global.h | 9 +- 7 files changed, 296 insertions(+), 172 deletions(-) (limited to 'erts/emulator/beam') diff --git a/erts/emulator/beam/erl_db.c b/erts/emulator/beam/erl_db.c index 02f16899ae..5b74240cc3 100644 --- a/erts/emulator/beam/erl_db.c +++ b/erts/emulator/beam/erl_db.c @@ -2713,7 +2713,6 @@ BIF_RETTYPE ets_match_spec_run_r_3(BIF_ALIST_3) Binary *mp; Eterm res; Uint32 dummy; - Uint sz; if (!(is_list(BIF_ARG_1) || BIF_ARG_1 == NIL) || !is_binary(BIF_ARG_2)) { error: @@ -2738,11 +2737,10 @@ BIF_RETTYPE ets_match_spec_run_r_3(BIF_ALIST_3) BIF_TRAP3(bif_export[BIF_ets_match_spec_run_r_3], BIF_P,lst,BIF_ARG_2,ret); } - res = db_prog_match(BIF_P, mp, CAR(list_val(lst)), NULL, NULL, 0, &dummy); + res = db_prog_match(BIF_P, mp, CAR(list_val(lst)), NULL, NULL, 0, + ERTS_PAM_COPY_RESULT, &dummy); if (is_value(res)) { - sz = size_object(res); - hp = HAlloc(BIF_P, sz + 2); - res = copy_struct(res, sz, &hp, &MSO(BIF_P)); + hp = HAlloc(BIF_P, 2); ret = CONS(hp,res,ret); /*hp += 2;*/ } diff --git a/erts/emulator/beam/erl_db_hash.c b/erts/emulator/beam/erl_db_hash.c index 035aefed0c..9ef990cc4f 100644 --- a/erts/emulator/beam/erl_db_hash.c +++ b/erts/emulator/beam/erl_db_hash.c @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 1998-2010. All Rights Reserved. + * Copyright Ericsson AB 1998-2011. All Rights Reserved. * * The contents of this file are subject to the Erlang Public License, * Version 1.1, (the "License"); you may not use this file except in @@ -1303,8 +1303,8 @@ static int db_select_continue_hash(Process *p, } for(;;) { if (current->hvalue != INVALID_HASH && - (match_res = db_prog_match_and_copy(&tb->common, p, mp, all_objects, - ¤t->dbterm, &hp, 2), + (match_res = db_match_dbterm(&tb->common, p, mp, all_objects, + ¤t->dbterm, &hp, 2), is_value(match_res))) { match_list = CONS(hp, match_res, match_list); @@ -1468,8 +1468,8 @@ static int db_select_chunk_hash(Process *p, DbTable *tbl, for(;;) { if (current != NULL) { if (current->hvalue != INVALID_HASH) { - match_res = db_prog_match_and_copy(&tb->common, p, mpi.mp, 0, - ¤t->dbterm, &hp, 2); + match_res = db_match_dbterm(&tb->common, p, mpi.mp, 0, + ¤t->dbterm, &hp, 2); if (is_value(match_res)) { match_list = CONS(hp, match_res, match_list); ++got; @@ -1634,8 +1634,8 @@ static int db_select_count_hash(Process *p, for(;;) { if (current != NULL) { if (current->hvalue != INVALID_HASH) { - if (db_prog_match_and_copy(&tb->common, p, mpi.mp, 0, - ¤t->dbterm, NULL,0) == am_true) { + if (db_match_dbterm(&tb->common, p, mpi.mp, 0, + ¤t->dbterm, NULL,0) == am_true) { ++got; } --num_left; @@ -1783,8 +1783,8 @@ static int db_select_delete_hash(Process *p, } else { int did_erase = 0; - if (db_prog_match_and_copy(&tb->common, p, mpi.mp, 0, - &(*current)->dbterm, NULL, 0) == am_true) { + if (db_match_dbterm(&tb->common, p, mpi.mp, 0, + &(*current)->dbterm, NULL, 0) == am_true) { if (NFIXED(tb) > fixated_by_me) { /* fixated by others? */ if (slot_ix != last_pseudo_delete) { add_fixed_deletion(tb, slot_ix); @@ -1894,8 +1894,8 @@ static int db_select_delete_continue_hash(Process *p, } else { int did_erase = 0; - if (db_prog_match_and_copy(&tb->common, p, mp, 0, - &(*current)->dbterm, NULL, 0) == am_true) { + if (db_match_dbterm(&tb->common, p, mp, 0, + &(*current)->dbterm, NULL, 0) == am_true) { if (NFIXED(tb) > fixated_by_me) { /* fixated by others? */ if (slot_ix != last_pseudo_delete) { add_fixed_deletion(tb, slot_ix); @@ -1994,8 +1994,8 @@ static int db_select_count_continue_hash(Process *p, current = current->next; continue; } - if (db_prog_match_and_copy(&tb->common, p, mp, 0, ¤t->dbterm, - NULL, 0) == am_true) { + if (db_match_dbterm(&tb->common, p, mp, 0, ¤t->dbterm, + NULL, 0) == am_true) { ++got; } --num_left; @@ -2174,7 +2174,7 @@ static int analyze_pattern(DbTableHash *tb, Eterm pattern, HashValue hval = NIL; int num_heads = 0; int i; - + mpi->lists = mpi->dlists; mpi->num_lists = 0; mpi->key_given = 1; diff --git a/erts/emulator/beam/erl_db_tree.c b/erts/emulator/beam/erl_db_tree.c index d4f02f9117..484a096249 100644 --- a/erts/emulator/beam/erl_db_tree.c +++ b/erts/emulator/beam/erl_db_tree.c @@ -2978,8 +2978,8 @@ static int doit_select(DbTableTree *tb, TreeDbTerm *this, void *ptr, this->dbterm.tpl) > 0))) { return 0; } - ret = db_prog_match_and_copy(&tb->common,sc->p,sc->mp,sc->all_objects, - &this->dbterm, &hp, 2); + ret = db_match_dbterm(&tb->common,sc->p,sc->mp,sc->all_objects, + &this->dbterm, &hp, 2); if (is_value(ret)) { sc->accum = CONS(hp, ret, sc->accum); } @@ -3011,8 +3011,8 @@ static int doit_select_count(DbTableTree *tb, TreeDbTerm *this, void *ptr, this->dbterm.tpl) > 0)) { return 0; } - ret = db_prog_match_and_copy(&tb->common, sc->p, sc->mp, 0, - &this->dbterm, NULL, 0); + ret = db_match_dbterm(&tb->common, sc->p, sc->mp, 0, + &this->dbterm, NULL, 0); if (ret == am_true) { ++(sc->got); } @@ -3043,8 +3043,8 @@ static int doit_select_chunk(DbTableTree *tb, TreeDbTerm *this, void *ptr, return 0; } - ret = db_prog_match_and_copy(&tb->common, sc->p, sc->mp, sc->all_objects, - &this->dbterm, &hp, 2); + ret = db_match_dbterm(&tb->common, sc->p, sc->mp, sc->all_objects, + &this->dbterm, &hp, 2); if (is_value(ret)) { ++(sc->got); sc->accum = CONS(hp, ret, sc->accum); @@ -3080,8 +3080,8 @@ static int doit_select_delete(DbTableTree *tb, TreeDbTerm *this, void *ptr, GETKEY_WITH_POS(sc->keypos, this->dbterm.tpl), this->dbterm.tpl) > 0) return 0; - ret = db_prog_match_and_copy(&tb->common, sc->p, sc->mp, 0, - &this->dbterm, NULL, 0); + ret = db_match_dbterm(&tb->common, sc->p, sc->mp, 0, + &this->dbterm, NULL, 0); if (ret == am_true) { key = GETKEY(sc->tb, this->dbterm.tpl); linkout_tree(sc->tb, key, this->dbterm.tpl); diff --git a/erts/emulator/beam/erl_db_util.c b/erts/emulator/beam/erl_db_util.c index 49d3f9ffd1..2b7e0bcac3 100644 --- a/erts/emulator/beam/erl_db_util.c +++ b/erts/emulator/beam/erl_db_util.c @@ -229,6 +229,11 @@ typedef enum { matchCall2, matchCall3, matchPushV, +#if HALFWORD_HEAP + matchPushVGuard, /* First guard-only variable reference */ +#endif + matchPushVResult, /* First variable reference in result, or (if HALFWORD) + in guard if also referenced in result */ matchPushExpr, /* Push the whole expression we're matching ('$_') */ matchPushArrayAsList, /* Only when parameter is an Array and not an erlang term (DCOMP_TRACE) */ @@ -292,11 +297,19 @@ DMC_DECLARE_STACK_TYPE(unsigned); ** Data about the heap during compilation */ +typedef struct DMCVariable { + int is_bound; + int is_in_body; +#if HALFWORD_HEAP + int first_guard_label; /* to maybe change from PushVGuard to PushVResult */ +#endif +} DMCVariable; + typedef struct DMCHeap { int size; - unsigned def[DMC_DEFAULT_SIZE]; - unsigned *data; - int used; + DMCVariable vars_def[DMC_DEFAULT_SIZE]; + DMCVariable* vars; + int vars_used; } DMCHeap; /* @@ -346,9 +359,22 @@ typedef struct dmc_context { #define ERTS_DEFAULT_MS_HEAP_SIZE 128 +/* Runtime info about a $-variable +*/ +typedef struct MatchVariable { + Eterm term; +#ifdef DEBUG + Process* proc; + Eterm* base; +#endif +} MatchVariable; + typedef struct { Process process; - Eterm *heap; + union { + Eterm* heap; + MatchVariable* variables; /* first on "heap" */ + }u; Eterm default_heap[ERTS_DEFAULT_MS_HEAP_SIZE]; } ErtsMatchPseudoProcess; @@ -371,10 +397,10 @@ cleanup_match_pseudo_process(ErtsMatchPseudoProcess *mpsp, int keep_heap) } #endif if (!keep_heap) { - if (mpsp->heap != &mpsp->default_heap[0]) { + if (mpsp->u.heap != mpsp->default_heap) { /* Have to be done *after* call to erts_cleanup_empty_process() */ - erts_free(ERTS_ALC_T_DB_MS_RUN_HEAP, (void *) mpsp->heap); - mpsp->heap = &mpsp->default_heap[0]; + erts_free(ERTS_ALC_T_DB_MS_RUN_HEAP, (void *) mpsp->u.heap); + mpsp->u.heap = mpsp->default_heap; } #ifdef DEBUG else { @@ -398,7 +424,7 @@ create_match_pseudo_process(void) mpsp = (ErtsMatchPseudoProcess *)erts_alloc(ERTS_ALC_T_DB_MS_PSDO_PROC, sizeof(ErtsMatchPseudoProcess)); erts_init_empty_process(&mpsp->process); - mpsp->heap = &mpsp->default_heap[0]; + mpsp->u.heap = mpsp->default_heap; return mpsp; } @@ -422,12 +448,11 @@ get_match_pseudo_process(Process *c_p, Uint heap_size) mpsp = match_pseudo_process; cleanup_match_pseudo_process(mpsp, 0); #endif - if (heap_size > ERTS_DEFAULT_MS_HEAP_SIZE) { - mpsp->heap = (Eterm *) erts_alloc(ERTS_ALC_T_DB_MS_RUN_HEAP, - heap_size*sizeof(Uint)); + if (heap_size > ERTS_DEFAULT_MS_HEAP_SIZE*sizeof(Eterm)) { + mpsp->u.heap = (Eterm*) erts_alloc(ERTS_ALC_T_DB_MS_RUN_HEAP, heap_size); } else { - ASSERT(mpsp->heap == &mpsp->default_heap[0]); + ASSERT(mpsp->u.heap == mpsp->default_heap); } return mpsp; } @@ -855,7 +880,7 @@ static DMCRet dmc_one_term(DMCContext *context, static int test_disassemble_next = 0; void db_match_dis(Binary *prog); #define TRACE erts_fprintf(stderr,"Trace: %s:%d\n",__FILE__,__LINE__) -#define FENCE_PATTERN_SIZE 1 +#define FENCE_PATTERN_SIZE (1*sizeof(Uint)) #define FENCE_PATTERN 0xDEADBEEFUL #else #define TRACE /* Nothing */ @@ -1163,14 +1188,14 @@ done: } Eterm erts_match_set_run(Process *p, Binary *mpsp, - Eterm *args, int num_args, + Eterm *args, int num_args, + enum erts_pam_run_flags in_flags, Uint32 *return_flags) { Eterm ret; - ret = db_prog_match(p, mpsp, - NIL, NULL, args, - num_args, return_flags); + ret = db_prog_match(p, mpsp, NIL, NULL, args, num_args, + in_flags, return_flags); #if defined(HARDDEBUG) if (is_non_value(ret)) { erts_fprintf(stderr, "Failed\n"); @@ -1194,7 +1219,9 @@ static Eterm erts_match_set_run_ets(Process *p, Binary *mpsp, { Eterm ret; - ret = db_prog_match(p, mpsp, args, NULL, NULL, num_args, return_flags); + ret = db_prog_match(p, mpsp, args, NULL, NULL, num_args, + ERTS_PAM_CONTIGUOUS_TUPLE | ERTS_PAM_COPY_RESULT, + return_flags); #if defined(HARDDEBUG) if (is_non_value(ret)) { erts_fprintf(stderr, "Failed\n"); @@ -1280,19 +1307,19 @@ Binary *db_match_compile(Eterm *matchexpr, context.cflags = flags; heap.size = DMC_DEFAULT_SIZE; - heap.data = heap.def; + heap.vars = heap.vars_def; /* ** Compile the match expression */ restart: - heap.used = 0; + heap.vars_used = 0; max_eheap_need = 0; for (context.current_match = 0; context.current_match < num_progs; ++context.current_match) { /* This loop is long, too long */ - memset(heap.data, 0, heap.size * sizeof(*heap.data)); + memset(heap.vars, 0, heap.size * sizeof(*heap.vars)); t = context.matchexpr[context.current_match]; context.stack_used = 0; context.eheap_need = 0; @@ -1506,16 +1533,14 @@ restart: ret->saved_program_buf = NULL; ret->saved_program = NIL; ret->term_save = context.save; - ret->num_bindings = heap.used; + ret->num_bindings = heap.vars_used; ret->single_variable = context.special; sys_memcpy(ret->text, DMC_STACK_DATA(text), DMC_STACK_NUM(text) * sizeof(UWord)); - ret->heap_size = ((heap.used * sizeof(Eterm)) + - (max_eheap_need * sizeof(Eterm)) + - (context.stack_need * sizeof(Eterm *)) + - (3 * (FENCE_PATTERN_SIZE * sizeof(Eterm *)))); - ret->eheap_offset = heap.used + FENCE_PATTERN_SIZE; - ret->stack_offset = ret->eheap_offset + max_eheap_need + FENCE_PATTERN_SIZE; + ret->eheap_offset = heap.vars_used*sizeof(MatchVariable) + FENCE_PATTERN_SIZE; + ret->stack_offset = ret->eheap_offset + max_eheap_need*sizeof(Eterm) + FENCE_PATTERN_SIZE; + ret->heap_size = ret->stack_offset + context.stack_need * sizeof(Eterm*) + FENCE_PATTERN_SIZE; + #ifdef DMC_DEBUG ret->prog_end = ret->text + DMC_STACK_NUM(text); #endif @@ -1533,8 +1558,8 @@ error: /* Here is were we land when compilation failed. */ DMC_FREE(text); if (context.copy != NULL) free_message_buffer(context.copy); - if (heap.data != heap.def) - erts_free(ERTS_ALC_T_DB_MS_CMPL_HEAP, (void *) heap.data); + if (heap.vars != heap.vars_def) + erts_free(ERTS_ALC_T_DB_MS_CMPL_HEAP, (void *) heap.vars); return bp; } @@ -1588,9 +1613,9 @@ static Eterm dpm_array_to_list(Process *psp, Eterm *arr, int arity) return ret; } -void heap_consistency_check(Process*); // SVERK +//void heap_consistency_check(Process*); // SVERK -/************************ +#if HALFWORD_HEAP struct heap_checkpoint_t { Process *p; @@ -1627,19 +1652,32 @@ static void heap_checkpoint_revert(struct heap_checkpoint_t* hcp) if (MBUF(hcp->p) != hcp->mbuf) { ErlHeapFragment* hf = MBUF(hcp->p); ASSERT(hf != NULL); - while (hf->next != hcp->mbuf) { - hf = hf->next; + if (hcp->mbuf) { + while (hf->next != hcp->mbuf) { + hf = hf->next; + } + hf->next = NULL; } - hf->next = NULL; free_message_buffer(MBUF(hcp->p)); MBUF(hcp->p) = hcp->mbuf; } if (hcp->mbuf != NULL && hcp->mbuf->used_size != hcp->used_size) { - abort(); + hcp->mbuf->used_size = hcp->used_size; } HEAP_TOP(hcp->p) = hcp->htop; } -*******************/ +#endif /* HALFWORD_HEAP */ + +static ERTS_INLINE Eterm copy_object_rel(Process* p, Eterm term, Eterm* base) +{ + if (!is_immed(term)) { + Uint sz = size_object_rel(term, base); + Eterm* top = HAlloc(p, sz); + return copy_struct_rel(term, sz, &top, &MSO(p), base, NULL); + } + return term; +} + /* ** Execution of the match program, this is Pam. @@ -1651,6 +1689,7 @@ Eterm db_prog_match(Process *c_p, Binary *bprog, Eterm term, Eterm* base, Eterm *termp, int arity, + enum erts_pam_run_flags in_flags, Uint32 *return_flags) { MatchProg *prog = Binary2MatchProg(bprog); @@ -1659,7 +1698,7 @@ Eterm db_prog_match(Process *c_p, Binary *bprog, Eterm t; Eterm **sp; Eterm *esp; - Eterm *hp; + MatchVariable* variables; BeamInstr *cp; UWord *pc = prog->text; Eterm *ehp; @@ -1670,17 +1709,15 @@ Eterm db_prog_match(Process *c_p, Binary *bprog, ErtsMatchPseudoProcess *mpsp; Process *psp; Process* build_proc; - Process* variable_proc; -#if HALFWORD_HEAP - Eterm* variable_base; /* base for $n-variables (hp[n]) */ -#endif Process *tmpp; Process *current_scheduled; ErtsSchedulerData *esdp; Eterm (*bif)(Process*, ...); int fail_label; int atomic_trace; - int is_ets = 0; // SVERK ToDo!!! +#if HALFWORD_HEAP + struct heap_checkpoint_t c_p_checkpoint = {}; +#endif #ifdef DMC_DEBUG Uint *heap_fence; Uint *eheap_fence; @@ -1688,6 +1725,13 @@ Eterm db_prog_match(Process *c_p, Binary *bprog, Uint save_op; #endif /* DMC_DEBUG */ +// if (base == NULL) { +// erts_fprintf(stderr, "SVERK prog_match = %T\r\n", term); +// } else { +// erts_fprintf(stderr, "SVERK prog_match = REL-TERM\r\n"); +// } + ASSERT(base==NULL || HALFWORD_HEAP); + mpsp = get_match_pseudo_process(c_p, prog->heap_size); psp = &mpsp->process; @@ -1697,7 +1741,6 @@ Eterm db_prog_match(Process *c_p, Binary *bprog, esdp = ERTS_GET_SCHEDULER_DATA_FROM_PROC(c_p); ASSERT(esdp != NULL); current_scheduled = esdp->current_process; - esdp->current_process = psp; /* SMP: psp->scheduler_data is set by get_match_pseudo_process */ atomic_trace = 0; @@ -1720,9 +1763,9 @@ Eterm db_prog_match(Process *c_p, Binary *bprog, #ifdef DMC_DEBUG save_op = 0; - heap_fence = (Uint *) mpsp->heap + prog->eheap_offset - 1; - eheap_fence = (Uint *) mpsp->heap + prog->stack_offset - 1; - stack_fence = (Uint *) mpsp->heap + prog->heap_size - 1; + heap_fence = (Eterm*)((char*) mpsp->u.heap + prog->eheap_offset) - 1; + eheap_fence = (Eterm*)((char*) mpsp->u.heap + prog->stack_offset) - 1; + stack_fence = (Eterm*)((char*) mpsp->u.heap + prog->heap_size) - 1; *heap_fence = FENCE_PATTERN; *eheap_fence = FENCE_PATTERN; *stack_fence = FENCE_PATTERN; @@ -1738,30 +1781,30 @@ Eterm db_prog_match(Process *c_p, Binary *bprog, *return_flags = 0U; - //heap_checkpoint_init(c_p, &heap_checkpoint); - - hp = mpsp->heap; + variables = mpsp->u.variables; +#if HALFWORD_HEAP + c_p_checkpoint.p = NULL; +#endif restart: ep = &term; - esp = mpsp->heap + prog->stack_offset; + esp = (Eterm*)((char*)mpsp->u.heap + prog->stack_offset); sp = (Eterm **) esp; - ASSERT(hp == mpsp->heap); // SVERK - //ehp = mpsp->heap + prog->eheap_offset; + //ehp = (char*)mpsp->u.heap + prog->eheap_offset; ret = am_true; do_catch = 0; fail_label = -1; build_proc = psp; + esdp->current_process = psp; + ASSERT_HALFWORD(!c_p_checkpoint.p); - /* Clear all variables for matchPushV */ - for (i=prog->eheap_offset-(1+FENCE_PATTERN_SIZE); i>=0; i--) { - hp[i] = NIL; +#ifdef DEBUG + ASSERT(variables == mpsp->u.variables); + for (i=0; inum_bindings; i++) { + variables[i].term = THE_NON_VALUE; + variables[i].proc = NULL; + variables[i].base = base; } -#if HALFWORD_HEAP - variable_base = base; - variable_proc = NULL; -#else - variable_proc = build_proc; #endif for (;;) { @@ -1796,10 +1839,9 @@ restart: ep = termp; break; case matchArrayBind: /* When the array size is unknown. */ - ASSERT_HALFWORD(variable_base == NULL); - ASSERT(build_proc == NULL); + ASSERT(termp); n = *pc++; - hp[n] = dpm_array_to_list(psp, termp, arity); + variables[n].term = dpm_array_to_list(psp, termp, arity); break; case matchTuple: /* *ep is a tuple of arity n */ if (!is_tuple_rel(*ep,base)) @@ -1836,13 +1878,12 @@ restart: ep = *(--sp); break; case matchBind: - ASSERT_HALFWORD(variable_base == base); n = *pc++; - hp[n] = *ep++; + variables[n].term = *ep++; break; case matchCmp: n = *pc++; - if (!eq_rel(hp[n], variable_base, *ep, base)) + if (!eq_rel(variables[n].term, base, *ep, base)) FAIL(); ++ep; break; @@ -1900,11 +1941,12 @@ restart: ++ep; break; /* - * Here comes guard instructions + * Here comes guard & body instructions */ case matchPushC: /* Push constant */ - if (do_catch && !is_immed(*pc)) { - *esp++ = copy_object(*pc++, build_proc); + if ((in_flags & ERTS_PAM_COPY_RESULT) + && do_catch && !is_immed(*pc)) { + *esp++ = copy_object(*pc++, c_p); } else { *esp++ = *pc++; @@ -1980,39 +2022,68 @@ restart: esp -= 2; esp[-1] = t; break; - case matchPushV: + + #if HALFWORD_HEAP + case matchPushVGuard: + if (!base) goto case_matchPushV; + /* Build NULL-based copy on pseudo heap for easy disposal */ n = *pc++; - if (variable_proc != build_proc && !is_immed(hp[n])) { - ASSERT(build_proc); - for (i=prog->eheap_offset-1; i>=0; i--) if (!is_immed(hp[i])) { - Uint sz = size_object_rel(hp[i], variable_base); - Eterm* top = HAlloc(build_proc, sz); - hp[i] = copy_struct_rel(hp[i], sz, &top, &MSO(build_proc), - variable_base, NULL); - } - #if HALFWORD_HEAP - variable_base = NULL; + ASSERT(is_value(variables[n].term)); + ASSERT(!variables[n].proc); + variables[n].term = copy_object_rel(psp, variables[n].term, base); + *esp++ = variables[n].term; + #ifdef DEBUG + variables[n].proc = psp; + variables[n].base = NULL; #endif - variable_proc = build_proc; + break; + #endif + case matchPushVResult: + if (!(in_flags & ERTS_PAM_COPY_RESULT)) goto case_matchPushV; + + /* Build (NULL-based) copy on callers heap */ + #if HALFWORD_HEAP + if (!do_catch && !c_p_checkpoint.p) { + heap_checkpoint_init(c_p, &c_p_checkpoint); } - *esp++ = hp[n]; + #endif + n = *pc++; + ASSERT(is_value(variables[n].term)); + ASSERT(!variables[n].proc); + variables[n].term = copy_object_rel(c_p, variables[n].term, base); + *esp++ = variables[n].term; + #ifdef DEBUG + variables[n].proc = c_p; + variables[n].base = NULL; + #endif + break; + case matchPushV: + case_matchPushV: + n = *pc++; + ASSERT(is_value(variables[n].term)); + ASSERT(!variables[n].base); + *esp++ = variables[n].term; break; - case matchPushExpr: { - Uint sz; - Eterm* top; - sz = size_object_rel(term, base); - top = HAlloc(build_proc, sz); - if (is_ets) { - ASSERT(is_tuple_rel(term,base)); - *esp++ = copy_shallow_rel(tuple_val_rel(term,base), sz, - &top, &MSO(build_proc), base); + case matchPushExpr: + if (in_flags & ERTS_PAM_COPY_RESULT) { + Uint sz; + Eterm* top; + sz = size_object_rel(term, base); + top = HAlloc(build_proc, sz); + if (in_flags & ERTS_PAM_CONTIGUOUS_TUPLE) { + ASSERT(is_tuple_rel(term,base)); + *esp++ = copy_shallow_rel(tuple_val_rel(term,base), sz, + &top, &MSO(build_proc), base); + } + else { + *esp++ = copy_struct_rel(term, sz, &top, &MSO(build_proc), + base, NULL); + } } else { - *esp++ = copy_struct_rel(term, sz, &top, &MSO(build_proc), - base, NULL); + *esp = term; } break; - } case matchPushArrayAsList: ASSERT_HALFWORD(base == NULL); n = arity; /* Only happens when 'term' is an array */ @@ -2309,11 +2380,12 @@ restart: } } break; - case matchCatch: - //heap_checkpoint_revert(&heap_checkpoint); + case matchCatch: /* Match success, now build result */ do_catch = 1; - build_proc = c_p; - esdp->current_process = build_proc; + if (in_flags & ERTS_PAM_COPY_RESULT) { + build_proc = c_p; + esdp->current_process = c_p; + } break; case matchHalt: goto success; @@ -2322,10 +2394,16 @@ restart: } } fail: - //heap_checkpoint_revert(&heap_checkpoint); +#if HALFWORD_HEAP + if (c_p_checkpoint.p) { + /* Dispose garbage built by guards on caller heap */ + heap_checkpoint_revert(&c_p_checkpoint); + c_p_checkpoint.p = NULL; + } +#endif *return_flags = 0U; - if (fail_label >= 0) { /* We failed during a "TryMeElse", - lets restart, with the next match + if (fail_label >= 0) { /* We failed during a "TryMeElse", + lets restart, with the next match program */ pc = (prog->text) + fail_label; cleanup_match_pseudo_process(mpsp, 1); @@ -2369,7 +2447,8 @@ success: /* * Convert a match program to a "magic" binary to return up to erlang */ -Eterm db_make_mp_binary(Process *p, Binary *mp, Eterm **hpp) { +Eterm db_make_mp_binary(Process *p, Binary *mp, Eterm **hpp) +{ return erts_mk_magic_binary_term(hpp, &MSO(p), mp); } @@ -3153,7 +3232,7 @@ static DMCRet dmc_one_term(DMCContext *context, ** Ouch, big integer in match variable. */ Eterm *save_hp; - ASSERT(heap->data == heap->def); + ASSERT(heap->vars == heap->vars_def); sz = sz2 = sz3 = 0; for (j = 0; j < context->num_match; ++j) { sz += size_object(context->matchexpr[j]); @@ -3191,24 +3270,23 @@ static DMCRet dmc_one_term(DMCContext *context, may be atoms that changed */ context->matchexpr[j] = context->copy->mem[j]; } - heap->data = erts_alloc(ERTS_ALC_T_DB_MS_CMPL_HEAP, - heap->size*sizeof(unsigned)); - sys_memset(heap->data, 0, - heap->size * sizeof(unsigned)); + heap->vars = erts_alloc(ERTS_ALC_T_DB_MS_CMPL_HEAP, + heap->size*sizeof(DMCVariable)); + sys_memset(heap->vars, 0, heap->size * sizeof(DMCVariable)); DMC_CLEAR(*stack); /*DMC_PUSH(*stack,NIL);*/ DMC_CLEAR(*text); return retRestart; } - if (heap->data[n]) { /* already bound ? */ + if (heap->vars[n].is_bound) { DMC_PUSH(*text,matchCmp); DMC_PUSH(*text,n); } else { /* Not bound, bind! */ - if (n >= heap->used) - heap->used = n + 1; + if (n >= heap->vars_used) + heap->vars_used = n + 1; DMC_PUSH(*text,matchBind); DMC_PUSH(*text,n); - heap->data[n] = 1; + heap->vars[n].is_bound = 1; } } else if (c == am_Underscore) { DMC_PUSH(*text, matchSkip); @@ -3515,6 +3593,41 @@ static DMCRet dmc_whole_expression(DMCContext *context, return retOk; } +/* Figure out which PushV instruction to use. +*/ +static void dmc_add_pushv_variant(DMCContext *context, DMCHeap *heap, + DMC_STACK_TYPE(UWord) *text, Uint n) +{ + DMCVariable* v = &heap->vars[n]; + MatchOps instr = matchPushV; + + ASSERT(n < heap->vars_used && v->is_bound); + if (context->is_guard) { + #if HALFWORD_HEAP + if (!v->first_guard_label) { + v->first_guard_label = DMC_STACK_NUM(*text); + ASSERT(v->first_guard_label); + instr = matchPushVGuard; /* may be changed to PushVResult below */ + } + #endif + } + else { /* body */ + #if HALFWORD_HEAP + if (v->first_guard_label) { + /* Avoid double-copy, copy to result heap at first encounter in guard */ + DMC_POKE(*text, v->first_guard_label, matchPushVResult); + v->is_in_body = 1; + } + #endif + if (!v->is_in_body) { + instr = matchPushVResult; + v->is_in_body = 1; + } + } + DMC_PUSH(*text, instr); + DMC_PUSH(*text, n); +} + static DMCRet dmc_variable(DMCContext *context, DMCHeap *heap, DMC_STACK_TYPE(UWord) *text, @@ -3522,13 +3635,13 @@ static DMCRet dmc_variable(DMCContext *context, int *constant) { Uint n = db_is_variable(t); - ASSERT(n >= 0); - if (n >= heap->used) - RETURN_VAR_ERROR("Variable $%d is unbound.", n, context, *constant); - if (heap->data[n] == 0U) + + if (n >= heap->vars_used || !heap->vars[n].is_bound) { RETURN_VAR_ERROR("Variable $%d is unbound.", n, context, *constant); - DMC_PUSH(*text, matchPushV); - DMC_PUSH(*text, n); + } + + dmc_add_pushv_variant(context, heap, text, n); + ++context->stack_used; if (context->stack_used > context->stack_need) context->stack_need = context->stack_used; @@ -3547,10 +3660,9 @@ static DMCRet dmc_all_bindings(DMCContext *context, DMC_PUSH(*text, matchPushC); DMC_PUSH(*text, NIL); - for (i = heap->used - 1; i >= 0; --i) { - if (heap->data[i]) { - DMC_PUSH(*text, matchPushV); - DMC_PUSH(*text, i); + for (i = heap->vars_used - 1; i >= 0; --i) { + if (heap->vars[i].is_bound) { + dmc_add_pushv_variant(context, heap, text, i); DMC_PUSH(*text, matchConsB); heap_used += 2; } @@ -4859,7 +4971,8 @@ static Eterm match_spec_test(Process *p, Eterm against, Eterm spec, int trace) } save_cp = p->cp; p->cp = NULL; - res = erts_match_set_run(p, mps, arr, n, &ret_flags); + res = erts_match_set_run(p, mps, arr, n, + ERTS_PAM_COPY_RESULT, &ret_flags); p->cp = save_cp; } else { n = 0; @@ -4872,11 +4985,10 @@ static Eterm match_spec_test(Process *p, Eterm against, Eterm spec, int trace) if (is_non_value(res)) { res = am_false; } - sz = size_object(res); + sz = 0; if (ret_flags & MATCH_SET_EXCEPTION_TRACE) sz += 2; if (ret_flags & MATCH_SET_RETURN_TRACE) sz += 2; hp = HAlloc(p, 5 + sz); - res = copy_struct(res, sz, &hp, &MSO(p)); flg = NIL; if (ret_flags & MATCH_SET_EXCEPTION_TRACE) { flg = CONS(hp, am_exception_trace, flg); @@ -4931,7 +5043,7 @@ void db_free_tmp_uncompressed(DbTerm* obj) erts_free(ERTS_ALC_T_TMP, obj); } -Eterm db_prog_match_and_copy(DbTableCommon* tb, Process* c_p, Binary* bprog, +Eterm db_match_dbterm(DbTableCommon* tb, Process* c_p, Binary* bprog, int all, DbTerm* obj, Eterm** hpp, Uint extra) { Uint32 dummy; @@ -4942,22 +5054,13 @@ Eterm db_prog_match_and_copy(DbTableCommon* tb, Process* c_p, Binary* bprog, obj = db_alloc_tmp_uncompressed(tb, obj); base = NULL; } - else base = obj->tpl; + else base = HALFWORD_HEAP ? obj->tpl : NULL; - res = db_prog_match(c_p, bprog, make_tuple_rel(obj->tpl,base), base, - NULL, 0, &dummy); + res = db_prog_match(c_p, bprog, make_tuple_rel(obj->tpl,base), base, NULL, 0, + ERTS_PAM_COPY_RESULT|ERTS_PAM_CONTIGUOUS_TUPLE, &dummy); if (is_value(res) && hpp!=NULL) { *hpp = HAlloc(c_p, extra); -// if (all) { -// *hpp = HAlloc(c_p, obj->size + extra); -// res = copy_shallow_rel(obj->tpl, obj->size, hpp, &MSO(c_p), base); -// } -// else { -// Uint sz = size_object(res); -// *hpp = HAlloc(c_p, sz + extra); -// res = copy_struct(res, sz, hpp, &MSO(c_p)); -// } } if (tb->compress) { @@ -5187,6 +5290,18 @@ void db_match_dis(Binary *bp) ++t; erts_printf("PushV\t%bpu\n", n); break; + #if HALFWORD_HEAP + case matchPushVGuard: + n = (Uint) *++t; + ++t; + erts_printf("PushVGuard\t%bpu\n", n); + break; + #endif + case matchPushVResult: + n = (Uint) *++t; + ++t; + erts_printf("PushVResult\t%bpu\n", n); + break; case matchTrue: ++t; erts_printf("True\n"); diff --git a/erts/emulator/beam/erl_db_util.h b/erts/emulator/beam/erl_db_util.h index bbf1e29f72..4cb5a457ef 100644 --- a/erts/emulator/beam/erl_db_util.h +++ b/erts/emulator/beam/erl_db_util.h @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 1998-2010. All Rights Reserved. + * Copyright Ericsson AB 1998-2011. All Rights Reserved. * * The contents of this file are subject to the Erlang Public License, * Version 1.1, (the "License"); you may not use this file except in @@ -424,12 +424,16 @@ Binary *db_match_compile(Eterm *matchexpr, Eterm *guards, Eterm *body, int num_matches, Uint flags, DMCErrInfo *err_info); -Eterm db_prog_match_and_copy(DbTableCommon* tb, Process* c_p, Binary* bprog, - int all, DbTerm* obj, Eterm** hpp, Uint extra); /* Returns newly allocated MatchProg binary with refc == 0*/ + +Eterm db_match_dbterm(DbTableCommon* tb, Process* c_p, Binary* bprog, + int all, DbTerm* obj, Eterm** hpp, Uint extra); + Eterm db_prog_match(Process *p, Binary *prog, Eterm term, Eterm* base, Eterm *termp, int arity, + enum erts_pam_run_flags in_flags, Uint32 *return_flags /* Zeroed on enter */); + /* returns DB_ERROR_NONE if matches, 1 if not matches and some db error on error. */ DMCErrInfo *db_new_dmc_err_info(void); diff --git a/erts/emulator/beam/erl_trace.c b/erts/emulator/beam/erl_trace.c index 3043bb1e8c..c0397ca6c3 100644 --- a/erts/emulator/beam/erl_trace.c +++ b/erts/emulator/beam/erl_trace.c @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 1999-2010. All Rights Reserved. + * Copyright Ericsson AB 1999-2011. All Rights Reserved. * * The contents of this file are subject to the Erlang Public License, * Version 1.1, (the "License"); you may not use this file except in @@ -1668,7 +1668,7 @@ erts_call_trace(Process* p, BeamInstr mfa[3], Binary *match_spec, return_flags = 0; if (match_spec) { pam_result = erts_match_set_run(p, match_spec, args, arity, - &return_flags); + ERTS_PAM_TMP_RESULT, &return_flags); if (is_non_value(pam_result)) { erts_match_set_release_result(p); #if !HEAP_ON_C_STACK @@ -1815,7 +1815,7 @@ erts_call_trace(Process* p, BeamInstr mfa[3], Binary *match_spec, return_flags = 0; if (match_spec) { pam_result = erts_match_set_run(p, match_spec, args, arity, - &return_flags); + ERTS_PAM_TMP_RESULT, &return_flags); if (is_non_value(pam_result)) { erts_match_set_release_result(p); UnUseTmpHeap(ERL_SUB_BIN_SIZE,p); diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h index b59f26b2bf..bd540eaaa6 100644 --- a/erts/emulator/beam/global.h +++ b/erts/emulator/beam/global.h @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 1996-2010. All Rights Reserved. + * Copyright Ericsson AB 1996-2011. All Rights Reserved. * * The contents of this file are subject to the Erlang Public License, * Version 1.1, (the "License"); you may not use this file except in @@ -1757,8 +1757,15 @@ do { \ extern Binary *erts_match_set_compile(Process *p, Eterm matchexpr); Eterm erts_match_set_lint(Process *p, Eterm matchexpr); extern void erts_match_set_release_result(Process* p); + +enum erts_pam_run_flags { + ERTS_PAM_TMP_RESULT=0, + ERTS_PAM_COPY_RESULT=1, + ERTS_PAM_CONTIGUOUS_TUPLE=2 +}; extern Eterm erts_match_set_run(Process *p, Binary *mpsp, Eterm *args, int num_args, + enum erts_pam_run_flags in_flags, Uint32 *return_flags); extern Eterm erts_match_set_get_source(Binary *mpsp); extern void erts_match_prog_foreach_offheap(Binary *b, -- cgit v1.2.3