diff options
Diffstat (limited to 'erts/emulator/beam/erl_gc.c')
| -rw-r--r-- | erts/emulator/beam/erl_gc.c | 1497 |
1 files changed, 896 insertions, 601 deletions
diff --git a/erts/emulator/beam/erl_gc.c b/erts/emulator/beam/erl_gc.c index 2f21111a2e..4698458521 100644 --- a/erts/emulator/beam/erl_gc.c +++ b/erts/emulator/beam/erl_gc.c @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 2002-2014. All Rights Reserved. + * Copyright Ericsson AB 2002-2016. All Rights Reserved. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -47,6 +47,17 @@ #define ERTS_INACT_WR_PB_LEAVE_LIMIT 10 #define ERTS_INACT_WR_PB_LEAVE_PERCENTAGE 10 +#if defined(DEBUG) || 0 +#define ERTS_GC_DEBUG +#else +#undef ERTS_GC_DEBUG +#endif +#ifdef ERTS_GC_DEBUG +# define ERTS_GC_ASSERT ASSERT +#else +# define ERTS_GC_ASSERT(B) ((void) 1) +#endif + /* * Returns number of elements in an array. */ @@ -59,7 +70,7 @@ erts_fprintf(stderr, "stop=%p\n", (p)->stop); \ erts_fprintf(stderr, "htop=%p\n", (p)->htop); \ erts_fprintf(stderr, "heap=%p\n", (p)->heap); \ - erl_exit(ERTS_ABORT_EXIT, "%s, line %d: %T: Overrun stack and heap\n", \ + erts_exit(ERTS_ABORT_EXIT, "%s, line %d: %T: Overrun stack and heap\n", \ __FILE__,__LINE__,(P)->common.id); \ } @@ -67,10 +78,10 @@ #define ErtsGcQuickSanityCheck(P) \ do { \ ASSERT((P)->heap < (P)->hend); \ - ASSERT((P)->heap_sz == (P)->hend - (P)->heap); \ + ASSERT((p)->abandoned_heap || (P)->heap_sz == (P)->hend - (P)->heap); \ ASSERT((P)->heap <= (P)->htop && (P)->htop <= (P)->hend); \ ASSERT((P)->heap <= (P)->stop && (P)->stop <= (P)->hend); \ - ASSERT((P)->heap <= (P)->high_water && (P)->high_water <= (P)->hend);\ + ASSERT((p)->abandoned_heap || ((P)->heap <= (P)->high_water && (P)->high_water <= (P)->hend)); \ OverRunCheck((P)); \ } while (0) #else @@ -98,18 +109,33 @@ typedef struct { static Uint setup_rootset(Process*, Eterm*, int, Rootset*); static void cleanup_rootset(Rootset *rootset); -static Uint combined_message_size(Process* p); static void remove_message_buffers(Process* p); -static int major_collection(Process* p, int need, Eterm* objv, int nobj, Uint *recl); -static int minor_collection(Process* p, int need, Eterm* objv, int nobj, Uint *recl); -static void do_minor(Process *p, Uint new_sz, Eterm* objv, int nobj); -static Eterm* sweep_rootset(Rootset *rootset, Eterm* htop, char* src, Uint src_size); -static Eterm* sweep_one_area(Eterm* n_hp, Eterm* n_htop, char* src, Uint src_size); -static Eterm* sweep_one_heap(Eterm* heap_ptr, Eterm* heap_end, Eterm* htop, - char* src, Uint src_size); -static Eterm* collect_heap_frags(Process* p, Eterm* heap, - Eterm* htop, Eterm* objv, int nobj); -static void adjust_after_fullsweep(Process *p, int need, Eterm *objv, int nobj); +static Eterm *full_sweep_heaps(Process *p, + int hibernate, + Eterm *n_heap, Eterm* n_htop, + char *oh, Uint oh_size, + Eterm *objv, int nobj); +static int garbage_collect(Process* p, ErlHeapFragment *live_hf_end, + int need, Eterm* objv, int nobj); +static int major_collection(Process* p, ErlHeapFragment *live_hf_end, + int need, Eterm* objv, int nobj, Uint *recl); +static int minor_collection(Process* p, ErlHeapFragment *live_hf_end, + int need, Eterm* objv, int nobj, Uint *recl); +static void do_minor(Process *p, ErlHeapFragment *live_hf_end, + char *mature, Uint mature_size, + Uint new_sz, Eterm* objv, int nobj); +static Eterm *sweep_new_heap(Eterm *n_hp, Eterm *n_htop, + char* old_heap, Uint old_heap_size); +static Eterm *sweep_heaps(Eterm *n_hp, Eterm *n_htop, + char* old_heap, Uint old_heap_size); +static Eterm* sweep_literal_area(Eterm* n_hp, Eterm* n_htop, + char* old_heap, Uint old_heap_size, + char* src, Uint src_size); +static Eterm* sweep_literals_to_old_heap(Eterm* heap_ptr, Eterm* heap_end, Eterm* htop, + char* src, Uint src_size); +static Eterm* collect_live_heap_frags(Process* p, ErlHeapFragment *live_hf_end, + Eterm* heap, Eterm* htop, Eterm* objv, int nobj); +static int adjust_after_fullsweep(Process *p, int need, Eterm *objv, int nobj); static void shrink_new_heap(Process *p, Uint new_sz, Eterm *objv, int nobj); static void grow_new_heap(Process *p, Uint new_sz, Eterm* objv, int nobj); static void sweep_off_heap(Process *p, int fullsweep); @@ -119,16 +145,16 @@ static void offset_rootset(Process *p, Sint offs, char* area, Uint area_size, Eterm* objv, int nobj); static void offset_off_heap(Process* p, Sint offs, char* area, Uint area_size); static void offset_mqueue(Process *p, Sint offs, char* area, Uint area_size); +static void move_msgq_to_heap(Process *p); static void init_gc_info(ErtsGCInfo *gcip); #ifdef HARDDEBUG static void disallow_heap_frag_ref_in_heap(Process* p); static void disallow_heap_frag_ref_in_old_heap(Process* p); -static void disallow_heap_frag_ref(Process* p, Eterm* n_htop, Eterm* objv, int nobj); #endif -#if defined(ARCH_64) && !HALFWORD_HEAP +#if defined(ARCH_64) # define MAX_HEAP_SIZES 154 #else # define MAX_HEAP_SIZES 59 @@ -147,26 +173,24 @@ typedef struct { erts_smp_atomic32_t refc; } ErtsGCInfoReq; -#if !HALFWORD_HEAP -ERTS_SCHED_PREF_QUICK_ALLOC_IMPL(gcireq, - ErtsGCInfoReq, - 5, - ERTS_ALC_T_GC_INFO_REQ) -#else -static ERTS_INLINE ErtsGCInfoReq * -gcireq_alloc(void) +static ERTS_INLINE int +gc_cost(Uint gc_moved_live_words, Uint resize_moved_words) { - return erts_alloc(ERTS_ALC_T_GC_INFO_REQ, - sizeof(ErtsGCInfoReq)); -} + Sint reds; -static ERTS_INLINE void -gcireq_free(ErtsGCInfoReq *ptr) -{ - erts_free(ERTS_ALC_T_GC_INFO_REQ, ptr); + reds = gc_moved_live_words/10; + reds += resize_moved_words/100; + if (reds < 1) + return 1; + if (reds > INT_MAX) + return INT_MAX; + return (int) reds; } -#endif +ERTS_SCHED_PREF_QUICK_ALLOC_IMPL(gcireq, + ErtsGCInfoReq, + 5, + ERTS_ALC_T_GC_INFO_REQ) /* * Initialize GC global data. */ @@ -208,7 +232,7 @@ erts_init_gc(void) } - /* for 32 bit we want max_heap_size to be MAX(32bit) / 4 [words] (and halfword) + /* for 32 bit we want max_heap_size to be MAX(32bit) / 4 [words] * for 64 bit we want max_heap_size to be MAX(52bit) / 8 [words] */ @@ -232,10 +256,7 @@ erts_init_gc(void) init_gc_info(&esdp->gc_info); } -#if !HALFWORD_HEAP init_gcireq_alloc(); -#endif - } /* @@ -268,7 +289,7 @@ erts_next_heap_size(Uint size, Uint offset) low = mid + 1; } } - erl_exit(1, "no next heap size found: %beu, offset %beu\n", size, offset); + erts_exit(ERTS_ERROR_EXIT, "no next heap size found: %beu, offset %beu\n", size, offset); } return 0; } @@ -351,10 +372,19 @@ erts_offset_off_heap(ErlOffHeap *ohp, Sint offs, Eterm* low, Eterm* high) #undef ptr_within Eterm -erts_gc_after_bif_call(Process* p, Eterm result, Eterm* regs, Uint arity) +erts_gc_after_bif_call_lhf(Process* p, ErlHeapFragment *live_hf_end, + Eterm result, Eterm* regs, Uint arity) { int cost; + if (p->flags & F_HIBERNATE_SCHED) { + /* + * We just hibernated. We do *not* want to mess + * up the hibernation by an ordinary GC... + */ + return result; + } + if (is_non_value(result)) { if (p->freason == TRAP) { #if HIPE @@ -362,21 +392,28 @@ erts_gc_after_bif_call(Process* p, Eterm result, Eterm* regs, Uint arity) regs = ERTS_PROC_GET_SCHDATA(p)->x_reg_array; } #endif - cost = erts_garbage_collect(p, 0, regs, p->arity); + cost = garbage_collect(p, live_hf_end, 0, regs, p->arity); } else { - cost = erts_garbage_collect(p, 0, regs, arity); + cost = garbage_collect(p, live_hf_end, 0, regs, arity); } } else { Eterm val[1]; val[0] = result; - cost = erts_garbage_collect(p, 0, val, 1); + cost = garbage_collect(p, live_hf_end, 0, val, 1); result = val[0]; } BUMP_REDS(p, cost); return result; } +Eterm +erts_gc_after_bif_call(Process* p, Eterm result, Eterm* regs, Uint arity) +{ + return erts_gc_after_bif_call_lhf(p, ERTS_INVALID_HFRAG_PTR, + result, regs, arity); +} + static ERTS_INLINE void reset_active_writer(Process *p) { struct erl_off_heap_header* ptr; @@ -390,6 +427,139 @@ static ERTS_INLINE void reset_active_writer(Process *p) } } +#define ERTS_DELAY_GC_EXTRA_FREE 40 +#define ERTS_ABANDON_HEAP_COST 10 + +static int +delay_garbage_collection(Process *p, ErlHeapFragment *live_hf_end, int need) +{ + ErlHeapFragment *hfrag; + Eterm *orig_heap, *orig_hend, *orig_htop, *orig_stop; + Eterm *stop, *hend; + Uint hsz, ssz; + int reds_left; + + ERTS_HOLE_CHECK(p); + + if ((p->flags & F_DISABLE_GC) + && p->live_hf_end == ERTS_INVALID_HFRAG_PTR) { + /* + * A BIF yielded with disabled GC. Remember + * heap fragments created by the BIF until we + * do next GC. + */ + p->live_hf_end = live_hf_end; + } + + if (need == 0) + return 1; + + /* + * Satisfy need in a heap fragment... + */ + ASSERT(need > 0); + + orig_heap = p->heap; + orig_hend = p->hend; + orig_htop = p->htop; + orig_stop = p->stop; + + ssz = orig_hend - orig_stop; + hsz = ssz + need + ERTS_DELAY_GC_EXTRA_FREE; + + hfrag = new_message_buffer(hsz); + hfrag->next = p->mbuf; + p->mbuf = hfrag; + p->mbuf_sz += hsz; + p->heap = p->htop = &hfrag->mem[0]; + p->hend = hend = &hfrag->mem[hsz]; + p->stop = stop = hend - ssz; + sys_memcpy((void *) stop, (void *) orig_stop, ssz * sizeof(Eterm)); + + if (p->abandoned_heap) { + /* Active heap already in a fragment; adjust it... */ + ErlHeapFragment *hfrag = ((ErlHeapFragment *) + (((char *) orig_heap) + - offsetof(ErlHeapFragment, mem))); + Uint unused = orig_hend - orig_htop; + ASSERT(hfrag->used_size == hfrag->alloc_size); + ASSERT(hfrag->used_size >= unused); + hfrag->used_size -= unused; + p->mbuf_sz -= unused; + } + else { + /* Do not leave a hole in the abandoned heap... */ + if (orig_htop < orig_hend) { + *orig_htop = make_pos_bignum_header(orig_hend-orig_htop-1); + if (orig_htop + 1 < orig_hend) { + orig_hend[-1] = (Uint) (orig_htop - orig_heap); + p->flags |= F_ABANDONED_HEAP_USE; + } + } + p->abandoned_heap = orig_heap; + } + +#ifdef CHECK_FOR_HOLES + p->last_htop = p->htop; + p->heap_hfrag = hfrag; +#endif + + /* Make sure that we do a proper GC as soon as possible... */ + p->flags |= F_FORCE_GC; + reds_left = ERTS_BIF_REDS_LEFT(p); + if (reds_left > ERTS_ABANDON_HEAP_COST) { + int vreds = reds_left - ERTS_ABANDON_HEAP_COST; + ERTS_VBUMP_REDS(p, vreds); + } + return ERTS_ABANDON_HEAP_COST; +} + +static ERTS_FORCE_INLINE Uint +young_gen_usage(Process *p) +{ + Uint hsz; + Eterm *aheap; + + hsz = p->mbuf_sz; + + if (p->flags & F_ON_HEAP_MSGQ) { + ErtsMessage *mp; + for (mp = p->msg.first; mp; mp = mp->next) + if (mp->data.attached) + hsz += erts_msg_attached_data_size(mp); + } + + aheap = p->abandoned_heap; + if (!aheap) + hsz += p->htop - p->heap; + else { + /* used in orig heap */ + if (p->flags & F_ABANDONED_HEAP_USE) + hsz += aheap[p->heap_sz-1]; + else + hsz += p->heap_sz; + /* Remove unused part in latest fragment */ + hsz -= p->hend - p->htop; + } + return hsz; +} + +#define ERTS_GET_ORIG_HEAP(Proc, Heap, HTop) \ + do { \ + Eterm *aheap__ = (Proc)->abandoned_heap; \ + if (!aheap__) { \ + (Heap) = (Proc)->heap; \ + (HTop) = (Proc)->htop; \ + } \ + else { \ + (Heap) = aheap__; \ + if ((Proc)->flags & F_ABANDONED_HEAP_USE) \ + (HTop) = aheap__ + aheap__[(Proc)->heap_sz-1]; \ + else \ + (HTop) = aheap__ + (Proc)->heap_sz; \ + } \ + } while (0) + /* * Garbage collect a process. * @@ -398,21 +568,28 @@ static ERTS_INLINE void reset_active_writer(Process *p) * objv: Array of terms to add to rootset; that is to preserve. * nobj: Number of objects in objv. */ -int -erts_garbage_collect(Process* p, int need, Eterm* objv, int nobj) +static int +garbage_collect(Process* p, ErlHeapFragment *live_hf_end, + int need, Eterm* objv, int nobj) { Uint reclaimed_now = 0; - int done = 0; + int reds; ErtsMonotonicTime start_time = 0; /* Shut up faulty warning... */ ErtsSchedulerData *esdp; + ERTS_MSACC_PUSH_STATE_M(); #ifdef USE_VM_PROBES DTRACE_CHARBUF(pidbuf, DTRACE_TERM_BUF_SIZE); #endif - if (p->flags & F_DISABLE_GC) { - ASSERT(need == 0); - return 1; - } + if (p->flags & (F_DISABLE_GC|F_DELAY_GC)) + return delay_garbage_collection(p, live_hf_end, need); + + if (p->abandoned_heap) + live_hf_end = ERTS_INVALID_HFRAG_PTR; + else if (p->live_hf_end != ERTS_INVALID_HFRAG_PTR) + live_hf_end = p->live_hf_end; + + ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_GC); esdp = erts_get_scheduler_data(); @@ -420,16 +597,14 @@ erts_garbage_collect(Process* p, int need, Eterm* objv, int nobj) trace_gc(p, am_gc_start); } - (void) erts_smp_atomic32_read_bor_nob(&p->state, ERTS_PSFLG_GC); + erts_smp_atomic32_read_bor_nob(&p->state, ERTS_PSFLG_GC); if (erts_system_monitor_long_gc != 0) start_time = erts_get_monotonic_time(esdp); ERTS_CHK_OFFHEAP(p); ErtsGcQuickSanityCheck(p); - if (GEN_GCS(p) >= MAX_GEN_GCS(p)) { - FLAGS(p) |= F_NEED_FULLSWEEP; - } + #ifdef USE_VM_PROBES *pidbuf = '\0'; if (DTRACE_ENABLED(gc_major_start) @@ -442,17 +617,23 @@ erts_garbage_collect(Process* p, int need, Eterm* objv, int nobj) /* * Test which type of GC to do. */ - while (!done) { - if ((FLAGS(p) & F_NEED_FULLSWEEP) != 0) { - DTRACE2(gc_major_start, pidbuf, need); - done = major_collection(p, need, objv, nobj, &reclaimed_now); - DTRACE2(gc_major_end, pidbuf, reclaimed_now); - } else { - DTRACE2(gc_minor_start, pidbuf, need); - done = minor_collection(p, need, objv, nobj, &reclaimed_now); - DTRACE2(gc_minor_end, pidbuf, reclaimed_now); - } + + if (GEN_GCS(p) < MAX_GEN_GCS(p) && !(FLAGS(p) & F_NEED_FULLSWEEP)) { + DTRACE2(gc_minor_start, pidbuf, need); + reds = minor_collection(p, live_hf_end, need, objv, nobj, &reclaimed_now); + DTRACE2(gc_minor_end, pidbuf, reclaimed_now); + if (reds < 0) + goto do_major_collection; + } + else { + do_major_collection: + ERTS_MSACC_SET_STATE_CACHED_M_X(ERTS_MSACC_STATE_GC_FULL); + DTRACE2(gc_major_start, pidbuf, need); + reds = major_collection(p, live_hf_end, need, objv, nobj, &reclaimed_now); + DTRACE2(gc_major_end, pidbuf, reclaimed_now); + ERTS_MSACC_SET_STATE_CACHED_M_X(ERTS_MSACC_STATE_GC); } + reset_active_writer(p); /* @@ -491,6 +672,9 @@ erts_garbage_collect(Process* p, int need, Eterm* objv, int nobj) esdp->gc_info.reclaimed += reclaimed_now; FLAGS(p) &= ~F_FORCE_GC; + p->live_hf_end = ERTS_INVALID_HFRAG_PTR; + + ERTS_MSACC_POP_STATE_M(); #ifdef CHECK_FOR_HOLES /* @@ -512,15 +696,20 @@ erts_garbage_collect(Process* p, int need, Eterm* objv, int nobj) p->last_old_htop = p->old_htop; #endif - /* FIXME: This function should really return an Sint, i.e., a possibly - 64 bit wide signed integer, but that requires updating all the code - that calls it. For now, we just return INT_MAX if the result is too - large for an int. */ - { - Sint result = (HEAP_TOP(p) - HEAP_START(p)) / 10; - if (result >= INT_MAX) return INT_MAX; - else return (int) result; - } + return reds; +} + +int +erts_garbage_collect_nobump(Process* p, int need, Eterm* objv, int nobj) +{ + return garbage_collect(p, ERTS_INVALID_HFRAG_PTR, need, objv, nobj); +} + +void +erts_garbage_collect(Process* p, int need, Eterm* objv, int nobj) +{ + int reds = garbage_collect(p, ERTS_INVALID_HFRAG_PTR, need, objv, nobj); + BUMP_REDS(p, reds); } /* @@ -533,13 +722,11 @@ erts_garbage_collect_hibernate(Process* p) Uint heap_size; Eterm* heap; Eterm* htop; - Rootset rootset; - char* src; - Uint src_size; Uint actual_size; char* area; Uint area_size; Sint offs; + int reds; if (p->flags & F_DISABLE_GC) ERTS_INTERNAL_ERROR("GC disabled"); @@ -549,8 +736,6 @@ erts_garbage_collect_hibernate(Process* p) */ erts_smp_atomic32_read_bor_nob(&p->state, ERTS_PSFLG_GC); ErtsGcQuickSanityCheck(p); - ASSERT(p->mbuf_sz == 0); - ASSERT(p->mbuf == 0); ASSERT(p->stop == p->hend); /* Stack must be empty. */ /* @@ -558,46 +743,25 @@ erts_garbage_collect_hibernate(Process* p) */ - heap_size = p->heap_sz + (p->old_htop - p->old_heap); + heap_size = p->heap_sz + (p->old_htop - p->old_heap) + p->mbuf_sz; heap = (Eterm*) ERTS_HEAP_ALLOC(ERTS_ALC_T_TMP_HEAP, sizeof(Eterm)*heap_size); htop = heap; - (void) setup_rootset(p, p->arg_reg, p->arity, &rootset); -#if HIPE - hipe_empty_nstack(p); -#endif - - src = (char *) p->heap; - src_size = (char *) p->htop - src; - htop = sweep_rootset(&rootset, htop, src, src_size); - htop = sweep_one_area(heap, htop, src, src_size); + htop = full_sweep_heaps(p, + 1, + heap, + htop, + (char *) p->old_heap, + (char *) p->old_htop - (char *) p->old_heap, + p->arg_reg, + p->arity); - if (p->old_heap) { - src = (char *) p->old_heap; - src_size = (char *) p->old_htop - src; - htop = sweep_rootset(&rootset, htop, src, src_size); - htop = sweep_one_area(heap, htop, src, src_size); - } - - cleanup_rootset(&rootset); - - if (MSO(p).first) { - sweep_off_heap(p, 1); - } - - /* - * Update all pointers. - */ ERTS_HEAP_FREE(ERTS_ALC_T_HEAP, - (void*)HEAP_START(p), - HEAP_SIZE(p) * sizeof(Eterm)); - if (p->old_heap) { - ERTS_HEAP_FREE(ERTS_ALC_T_OLD_HEAP, - (void*)p->old_heap, - (p->old_hend - p->old_heap) * sizeof(Eterm)); - p->old_heap = p->old_htop = p->old_hend = 0; - } + (p->abandoned_heap + ? p->abandoned_heap + : p->heap), + p->heap_sz * sizeof(Eterm)); p->heap = heap; p->high_water = htop; @@ -612,6 +776,7 @@ erts_garbage_collect_hibernate(Process* p) } FLAGS(p) &= ~F_FORCE_GC; + p->live_hf_end = ERTS_INVALID_HFRAG_PTR; /* * Move the heap to its final destination. @@ -631,6 +796,8 @@ erts_garbage_collect_hibernate(Process* p) sys_memcpy((void *) heap, (void *) p->heap, actual_size*sizeof(Eterm)); ERTS_HEAP_FREE(ERTS_ALC_T_TMP_HEAP, p->heap, p->heap_sz*sizeof(Eterm)); + remove_message_buffers(p); + p->stop = p->hend = heap + heap_size; offs = heap - p->heap; @@ -659,15 +826,18 @@ erts_garbage_collect_hibernate(Process* p) ErtsGcQuickSanityCheck(p); erts_smp_atomic32_read_band_nob(&p->state, ~ERTS_PSFLG_GC); + + reds = gc_cost(actual_size, actual_size); + BUMP_REDS(p, reds); } void erts_garbage_collect_literals(Process* p, Eterm* literals, - Uint lit_size, + Uint byte_lit_size, struct erl_off_heap_header* oh) { - Uint byte_lit_size = sizeof(Eterm)*lit_size; + Uint lit_size = byte_lit_size / sizeof(Eterm); Uint old_heap_size; Eterm* temp_lit; Sint offs; @@ -743,7 +913,7 @@ erts_garbage_collect_literals(Process* p, Eterm* literals, if (IS_MOVED_BOXED(val)) { ASSERT(is_boxed(val)); *g_ptr++ = val; - } else if (in_area(ptr, area, area_size)) { + } else if (ErtsInArea(ptr, area, area_size)) { MOVE_BOXED(ptr,val,old_htop,g_ptr++); } else { g_ptr++; @@ -754,7 +924,7 @@ erts_garbage_collect_literals(Process* p, Eterm* literals, val = *ptr; if (IS_MOVED_CONS(val)) { /* Moved */ *g_ptr++ = ptr[1]; - } else if (in_area(ptr, area, area_size)) { + } else if (ErtsInArea(ptr, area, area_size)) { MOVE_CONS(ptr,val,old_htop,g_ptr++); } else { g_ptr++; @@ -774,8 +944,10 @@ erts_garbage_collect_literals(Process* p, Eterm* literals, * Now we'll have to go through all heaps updating all other references. */ - old_htop = sweep_one_heap(p->heap, p->htop, old_htop, area, area_size); - old_htop = sweep_one_area(p->old_heap, old_htop, area, area_size); + old_htop = sweep_literals_to_old_heap(p->heap, p->htop, old_htop, area, area_size); + old_htop = sweep_literal_area(p->old_heap, old_htop, + (char *) p->old_heap, sizeof(Eterm)*old_heap_size, + area, area_size); ASSERT(p->old_htop <= old_htop && old_htop <= p->old_hend); p->old_htop = old_htop; @@ -834,15 +1006,18 @@ erts_garbage_collect_literals(Process* p, Eterm* literals, } static int -minor_collection(Process* p, int need, Eterm* objv, int nobj, Uint *recl) +minor_collection(Process* p, ErlHeapFragment *live_hf_end, + int need, Eterm* objv, int nobj, Uint *recl) { - Uint mature = HIGH_WATER(p) - HEAP_START(p); + Eterm *mature = p->abandoned_heap ? p->abandoned_heap : p->heap; + Uint mature_size = p->high_water - mature; + Uint size_before = young_gen_usage(p); /* * Allocate an old heap if we don't have one and if we'll need one. */ - if (OLD_HEAP(p) == NULL && mature != 0) { + if (OLD_HEAP(p) == NULL && mature_size != 0) { Eterm* n_old; /* Note: We choose a larger heap size than strictly needed, @@ -850,7 +1025,7 @@ minor_collection(Process* p, int need, Eterm* objv, int nobj, Uint *recl) * This improved Estone by more than 1200 estones on my computer * (Ultra Sparc 10). */ - Uint new_sz = erts_next_heap_size(HEAP_TOP(p) - HEAP_START(p), 1); + Uint new_sz = erts_next_heap_size(size_before, 1); /* Create new, empty old_heap */ n_old = (Eterm *) ERTS_HEAP_ALLOC(ERTS_ALC_T_OLD_HEAP, @@ -866,41 +1041,32 @@ minor_collection(Process* p, int need, Eterm* objv, int nobj, Uint *recl) */ if (OLD_HEAP(p) && - ((mature <= OLD_HEND(p) - OLD_HTOP(p)) && - ((BIN_VHEAP_MATURE(p) < ( BIN_OLD_VHEAP_SZ(p) - BIN_OLD_VHEAP(p)))) && - ((BIN_OLD_VHEAP_SZ(p) > BIN_OLD_VHEAP(p))) ) ) { - ErlMessage *msgp; - Uint size_after; - Uint need_after; - const Uint stack_size = STACK_SZ_ON_HEAP(p); - const Uint size_before = MBUF_SIZE(p) + (HEAP_TOP(p) - HEAP_START(p)); - Uint new_sz = HEAP_SIZE(p) + MBUF_SIZE(p) + combined_message_size(p); + ((mature_size <= OLD_HEND(p) - OLD_HTOP(p)) && + ((BIN_OLD_VHEAP_SZ(p) > BIN_OLD_VHEAP(p))) ) ) { + Eterm *prev_old_htop; + Uint stack_size, size_after, adjust_size, need_after, new_sz, new_mature; + + stack_size = p->hend - p->stop; + new_sz = stack_size + size_before; new_sz = next_heap_size(p, new_sz, 0); - do_minor(p, new_sz, objv, nobj); + prev_old_htop = p->old_htop; + do_minor(p, live_hf_end, (char *) mature, mature_size*sizeof(Eterm), + new_sz, objv, nobj); - size_after = HEAP_TOP(p) - HEAP_START(p); + if (p->flags & F_ON_HEAP_MSGQ) + move_msgq_to_heap(p); + + new_mature = p->old_htop - prev_old_htop; + + size_after = new_mature; + size_after += HEAP_TOP(p) - HEAP_START(p) + p->mbuf_sz; *recl += (size_before - size_after); - /* - * Copy newly received message onto the end of the new heap. - */ - ErtsGcQuickSanityCheck(p); - for (msgp = p->msg.first; msgp; msgp = msgp->next) { - if (msgp->data.attached) { - ErtsHeapFactory factory; - erts_factory_proc_prealloc_init(&factory, p, - erts_msg_attached_data_size(msgp)); - erts_move_msg_attached_data_to_heap(&factory, msgp); - erts_factory_close(&factory); - ErtsGcQuickSanityCheck(p); - } - } ErtsGcQuickSanityCheck(p); GEN_GCS(p)++; need_after = ((HEAP_TOP(p) - HEAP_START(p)) - + erts_used_frag_sz(MBUF(p)) + need + stack_size); @@ -913,6 +1079,8 @@ minor_collection(Process* p, int need, Eterm* objv, int nobj, Uint *recl) * the heap size is substantial, we don't want to shrink. */ + adjust_size = 0; + if ((HEAP_SIZE(p) > 3000) && (4 * need_after < HEAP_SIZE(p)) && ((HEAP_SIZE(p) > 8000) || (HEAP_SIZE(p) > (OLD_HEND(p) - OLD_HEAP(p))))) { @@ -934,28 +1102,33 @@ minor_collection(Process* p, int need, Eterm* objv, int nobj, Uint *recl) : next_heap_size(p, wanted, 0); if (wanted < HEAP_SIZE(p)) { shrink_new_heap(p, wanted, objv, nobj); + adjust_size = p->htop - p->heap; } - ASSERT(HEAP_SIZE(p) == next_heap_size(p, HEAP_SIZE(p), 0)); - ASSERT(MBUF(p) == NULL); - return 1; /* We are done. */ + goto done; } if (HEAP_SIZE(p) >= need_after) { /* * The heap size turned out to be just right. We are done. */ - ASSERT(HEAP_SIZE(p) == next_heap_size(p, HEAP_SIZE(p), 0)); - ASSERT(MBUF(p) == NULL); - return 1; + goto done; } + + grow_new_heap(p, next_heap_size(p, need_after, 0), objv, nobj); + adjust_size = p->htop - p->heap; + + done: + ASSERT(HEAP_SIZE(p) == next_heap_size(p, HEAP_SIZE(p), 0)); + ASSERT(MBUF(p) == NULL); + + return gc_cost(size_after, adjust_size); } /* - * Still not enough room after minor collection. Must force a major collection. + * Not enough room for a minor collection. Must force a major collection. */ - FLAGS(p) |= F_NEED_FULLSWEEP; - return 0; + return -1; } /* @@ -1009,7 +1182,9 @@ static ERTS_INLINE void offset_nstack(Process* p, Sint offs, #endif /* HIPE */ static void -do_minor(Process *p, Uint new_sz, Eterm* objv, int nobj) +do_minor(Process *p, ErlHeapFragment *live_hf_end, + char *mature, Uint mature_size, + Uint new_sz, Eterm* objv, int nobj) { Rootset rootset; /* Rootset for GC (stack, dictionary, etc). */ Roots* roots; @@ -1018,17 +1193,24 @@ do_minor(Process *p, Uint new_sz, Eterm* objv, int nobj) Eterm* ptr; Eterm val; Eterm gval; - char* heap = (char *) HEAP_START(p); - Uint heap_size = (char *) HEAP_TOP(p) - heap; - Uint mature_size = (char *) HIGH_WATER(p) - heap; Eterm* old_htop = OLD_HTOP(p); Eterm* n_heap; + char* oh = (char *) OLD_HEAP(p); + Uint oh_size = (char *) OLD_HTOP(p) - oh; + + VERBOSE(DEBUG_SHCOPY, ("[pid=%T] MINOR GC: %p %p %p %p\n", p->common.id, + HEAP_START(p), HEAP_END(p), OLD_HEAP(p), OLD_HEND(p))); n_htop = n_heap = (Eterm*) ERTS_HEAP_ALLOC(ERTS_ALC_T_HEAP, sizeof(Eterm)*new_sz); - if (MBUF(p) != NULL) { - n_htop = collect_heap_frags(p, n_heap, n_htop, objv, nobj); + if (live_hf_end != ERTS_INVALID_HFRAG_PTR) { + /* + * Move heap frags that we know are completely live + * directly into the new young heap generation. + */ + n_htop = collect_live_heap_frags(p, live_hf_end, n_heap, n_htop, + objv, nobj); } n = setup_rootset(p, objv, nobj, &rootset); @@ -1051,9 +1233,9 @@ do_minor(Process *p, Uint new_sz, Eterm* objv, int nobj) if (IS_MOVED_BOXED(val)) { ASSERT(is_boxed(val)); *g_ptr++ = val; - } else if (in_area(ptr, heap, mature_size)) { + } else if (ErtsInArea(ptr, mature, mature_size)) { MOVE_BOXED(ptr,val,old_htop,g_ptr++); - } else if (in_area(ptr, heap, heap_size)) { + } else if (ErtsInYoungGen(gval, ptr, oh, oh_size)) { MOVE_BOXED(ptr,val,n_htop,g_ptr++); } else { g_ptr++; @@ -1066,9 +1248,9 @@ do_minor(Process *p, Uint new_sz, Eterm* objv, int nobj) val = *ptr; if (IS_MOVED_CONS(val)) { /* Moved */ *g_ptr++ = ptr[1]; - } else if (in_area(ptr, heap, mature_size)) { + } else if (ErtsInArea(ptr, mature, mature_size)) { MOVE_CONS(ptr,val,old_htop,g_ptr++); - } else if (in_area(ptr, heap, heap_size)) { + } else if (ErtsInYoungGen(gval, ptr, oh, oh_size)) { MOVE_CONS(ptr,val,n_htop,g_ptr++); } else { g_ptr++; @@ -1093,7 +1275,7 @@ do_minor(Process *p, Uint new_sz, Eterm* objv, int nobj) */ if (mature_size == 0) { - n_htop = sweep_one_area(n_heap, n_htop, heap, heap_size); + n_htop = sweep_new_heap(n_heap, n_htop, oh, oh_size); } else { Eterm* n_hp = n_heap; Eterm* ptr; @@ -1110,9 +1292,9 @@ do_minor(Process *p, Uint new_sz, Eterm* objv, int nobj) if (IS_MOVED_BOXED(val)) { ASSERT(is_boxed(val)); *n_hp++ = val; - } else if (in_area(ptr, heap, mature_size)) { + } else if (ErtsInArea(ptr, mature, mature_size)) { MOVE_BOXED(ptr,val,old_htop,n_hp++); - } else if (in_area(ptr, heap, heap_size)) { + } else if (ErtsInYoungGen(gval, ptr, oh, oh_size)) { MOVE_BOXED(ptr,val,n_htop,n_hp++); } else { n_hp++; @@ -1124,9 +1306,9 @@ do_minor(Process *p, Uint new_sz, Eterm* objv, int nobj) val = *ptr; if (IS_MOVED_CONS(val)) { *n_hp++ = ptr[1]; - } else if (in_area(ptr, heap, mature_size)) { + } else if (ErtsInArea(ptr, mature, mature_size)) { MOVE_CONS(ptr,val,old_htop,n_hp++); - } else if (in_area(ptr, heap, heap_size)) { + } else if (ErtsInYoungGen(gval, ptr, oh, oh_size)) { MOVE_CONS(ptr,val,n_htop,n_hp++); } else { n_hp++; @@ -1146,10 +1328,10 @@ do_minor(Process *p, Uint new_sz, Eterm* objv, int nobj) if (IS_MOVED_BOXED(val)) { *origptr = val; mb->base = binary_bytes(val); - } else if (in_area(ptr, heap, mature_size)) { + } else if (ErtsInArea(ptr, mature, mature_size)) { MOVE_BOXED(ptr,val,old_htop,origptr); mb->base = binary_bytes(mb->orig); - } else if (in_area(ptr, heap, heap_size)) { + } else if (ErtsInYoungGen(*origptr, ptr, oh, oh_size)) { MOVE_BOXED(ptr,val,n_htop,origptr); mb->base = binary_bytes(mb->orig); } @@ -1170,9 +1352,8 @@ do_minor(Process *p, Uint new_sz, Eterm* objv, int nobj) * may point to the old (soon to be deleted) new_heap. */ - if (OLD_HTOP(p) < old_htop) { - old_htop = sweep_one_area(OLD_HTOP(p), old_htop, heap, heap_size); - } + if (OLD_HTOP(p) < old_htop) + old_htop = sweep_new_heap(OLD_HTOP(p), old_htop, oh, oh_size); OLD_HTOP(p) = old_htop; HIGH_WATER(p) = n_htop; @@ -1204,8 +1385,12 @@ do_minor(Process *p, Uint new_sz, Eterm* objv, int nobj) #endif ERTS_HEAP_FREE(ERTS_ALC_T_HEAP, - (void*)HEAP_START(p), + (p->abandoned_heap + ? p->abandoned_heap + : HEAP_START(p)), HEAP_SIZE(p) * sizeof(Eterm)); + p->abandoned_heap = NULL; + p->flags &= ~F_ABANDONED_HEAP_USE; HEAP_START(p) = n_heap; HEAP_TOP(p) = n_htop; HEAP_SIZE(p) = new_sz; @@ -1222,31 +1407,30 @@ do_minor(Process *p, Uint new_sz, Eterm* objv, int nobj) */ static int -major_collection(Process* p, int need, Eterm* objv, int nobj, Uint *recl) +major_collection(Process* p, ErlHeapFragment *live_hf_end, + int need, Eterm* objv, int nobj, Uint *recl) { - Rootset rootset; - Roots* roots; - const Uint size_before = ((HEAP_TOP(p) - HEAP_START(p)) - + (OLD_HTOP(p) - OLD_HEAP(p)) - + MBUF_SIZE(p)); + Uint size_before, size_after, stack_size; Eterm* n_heap; Eterm* n_htop; - char* src = (char *) HEAP_START(p); - Uint src_size = (char *) HEAP_TOP(p) - src; char* oh = (char *) OLD_HEAP(p); Uint oh_size = (char *) OLD_HTOP(p) - oh; - Uint n; - Uint new_sz; - int done; + Uint new_sz, stk_sz; + int adjusted; + + VERBOSE(DEBUG_SHCOPY, ("[pid=%T] MAJOR GC: %p %p %p %p\n", p->common.id, + HEAP_START(p), HEAP_END(p), OLD_HEAP(p), OLD_HEND(p))); /* * Do a fullsweep GC. First figure out the size of the heap * to receive all live data. */ - new_sz = (HEAP_SIZE(p) + MBUF_SIZE(p) - + combined_message_size(p) - + (OLD_HTOP(p) - OLD_HEAP(p))); + size_before = young_gen_usage(p); + size_before += p->old_htop - p->old_heap; + stack_size = p->hend - p->stop; + + new_sz = stack_size + size_before; new_sz = next_heap_size(p, new_sz, 0); /* @@ -1260,13 +1444,76 @@ major_collection(Process* p, int need, Eterm* objv, int nobj, Uint *recl) n_htop = n_heap = (Eterm *) ERTS_HEAP_ALLOC(ERTS_ALC_T_HEAP, sizeof(Eterm)*new_sz); - /* - * Get rid of heap fragments. - */ + if (live_hf_end != ERTS_INVALID_HFRAG_PTR) { + /* + * Move heap frags that we know are completely live + * directly into the heap. + */ + n_htop = collect_live_heap_frags(p, live_hf_end, n_heap, n_htop, + objv, nobj); + } - if (MBUF(p) != NULL) { - n_htop = collect_heap_frags(p, n_heap, n_htop, objv, nobj); + n_htop = full_sweep_heaps(p, 0, n_heap, n_htop, oh, oh_size, objv, nobj); + + /* Move the stack to the end of the heap */ + stk_sz = HEAP_END(p) - p->stop; + sys_memcpy(n_heap + new_sz - stk_sz, p->stop, stk_sz * sizeof(Eterm)); + p->stop = n_heap + new_sz - stk_sz; + +#ifdef USE_VM_PROBES + if (HEAP_SIZE(p) != new_sz && DTRACE_ENABLED(process_heap_grow)) { + DTRACE_CHARBUF(pidbuf, DTRACE_TERM_BUF_SIZE); + + dtrace_proc_str(p, pidbuf); + DTRACE3(process_heap_grow, pidbuf, HEAP_SIZE(p), new_sz); } +#endif + + ERTS_HEAP_FREE(ERTS_ALC_T_HEAP, + (p->abandoned_heap + ? p->abandoned_heap + : HEAP_START(p)), + p->heap_sz * sizeof(Eterm)); + p->abandoned_heap = NULL; + p->flags &= ~F_ABANDONED_HEAP_USE; + HEAP_START(p) = n_heap; + HEAP_TOP(p) = n_htop; + HEAP_SIZE(p) = new_sz; + HEAP_END(p) = n_heap + new_sz; + GEN_GCS(p) = 0; + + HIGH_WATER(p) = HEAP_TOP(p); + + remove_message_buffers(p); + + if (p->flags & F_ON_HEAP_MSGQ) + move_msgq_to_heap(p); + + ErtsGcQuickSanityCheck(p); + + size_after = HEAP_TOP(p) - HEAP_START(p) + p->mbuf_sz; + *recl += size_before - size_after; + + adjusted = adjust_after_fullsweep(p, need, objv, nobj); + +#ifdef HARDDEBUG + disallow_heap_frag_ref_in_heap(p); +#endif + ErtsGcQuickSanityCheck(p); + + return gc_cost(size_after, adjusted ? size_after : 0); +} + +static Eterm * +full_sweep_heaps(Process *p, + int hibernate, + Eterm *n_heap, Eterm* n_htop, + char *oh, Uint oh_size, + Eterm *objv, int nobj) +{ + Rootset rootset; + Roots *roots; + Uint n; /* * Copy all top-level terms directly referenced by the rootset to @@ -1274,7 +1521,14 @@ major_collection(Process* p, int need, Eterm* objv, int nobj, Uint *recl) */ n = setup_rootset(p, objv, nobj, &rootset); - n_htop = fullsweep_nstack(p, n_htop); + +#ifdef HIPE + if (hibernate) + hipe_empty_nstack(p); + else + n_htop = fullsweep_nstack(p, n_htop); +#endif + roots = rootset.roots; while (n--) { Eterm* g_ptr = roots->v; @@ -1294,7 +1548,7 @@ major_collection(Process* p, int need, Eterm* objv, int nobj, Uint *recl) if (IS_MOVED_BOXED(val)) { ASSERT(is_boxed(val)); *g_ptr++ = val; - } else if (in_area(ptr, src, src_size) || in_area(ptr, oh, oh_size)) { + } else if (!erts_is_literal(gval, ptr)) { MOVE_BOXED(ptr,val,n_htop,g_ptr++); } else { g_ptr++; @@ -1307,7 +1561,7 @@ major_collection(Process* p, int need, Eterm* objv, int nobj, Uint *recl) val = *ptr; if (IS_MOVED_CONS(val)) { *g_ptr++ = ptr[1]; - } else if (in_area(ptr, src, src_size) || in_area(ptr, oh, oh_size)) { + } else if (!erts_is_literal(gval, ptr)) { MOVE_CONS(ptr,val,n_htop,g_ptr++); } else { g_ptr++; @@ -1332,74 +1586,7 @@ major_collection(Process* p, int need, Eterm* objv, int nobj, Uint *recl) * until all is copied. */ - if (oh_size == 0) { - n_htop = sweep_one_area(n_heap, n_htop, src, src_size); - } else { - Eterm* n_hp = n_heap; - - while (n_hp != n_htop) { - Eterm* ptr; - Eterm val; - Eterm gval = *n_hp; - - switch (primary_tag(gval)) { - case TAG_PRIMARY_BOXED: { - ptr = boxed_val(gval); - val = *ptr; - if (IS_MOVED_BOXED(val)) { - ASSERT(is_boxed(val)); - *n_hp++ = val; - } else if (in_area(ptr, src, src_size) || in_area(ptr, oh, oh_size)) { - MOVE_BOXED(ptr,val,n_htop,n_hp++); - } else { - n_hp++; - } - break; - } - case TAG_PRIMARY_LIST: { - ptr = list_val(gval); - val = *ptr; - if (IS_MOVED_CONS(val)) { - *n_hp++ = ptr[1]; - } else if (in_area(ptr, src, src_size) || in_area(ptr, oh, oh_size)) { - MOVE_CONS(ptr,val,n_htop,n_hp++); - } else { - n_hp++; - } - break; - } - case TAG_PRIMARY_HEADER: { - if (!header_is_thing(gval)) - n_hp++; - else { - if (header_is_bin_matchstate(gval)) { - ErlBinMatchState *ms = (ErlBinMatchState*) n_hp; - ErlBinMatchBuffer *mb = &(ms->mb); - Eterm* origptr; - origptr = &(mb->orig); - ptr = boxed_val(*origptr); - val = *ptr; - if (IS_MOVED_BOXED(val)) { - *origptr = val; - mb->base = binary_bytes(*origptr); - } else if (in_area(ptr, src, src_size) || - in_area(ptr, oh, oh_size)) { - MOVE_BOXED(ptr,val,n_htop,origptr); - mb->base = binary_bytes(*origptr); - ptr = boxed_val(*origptr); - val = *ptr; - } - } - n_hp += (thing_arityval(gval)+1); - } - break; - } - default: - n_hp++; - break; - } - } - } + n_htop = sweep_heaps(n_heap, n_htop, oh, oh_size); if (MSO(p).first) { sweep_off_heap(p, 1); @@ -1412,75 +1599,13 @@ major_collection(Process* p, int need, Eterm* objv, int nobj, Uint *recl) OLD_HEAP(p) = OLD_HTOP(p) = OLD_HEND(p) = NULL; } - /* Move the stack to the end of the heap */ - n = HEAP_END(p) - p->stop; - sys_memcpy(n_heap + new_sz - n, p->stop, n * sizeof(Eterm)); - p->stop = n_heap + new_sz - n; - -#ifdef USE_VM_PROBES - if (HEAP_SIZE(p) != new_sz && DTRACE_ENABLED(process_heap_grow)) { - DTRACE_CHARBUF(pidbuf, DTRACE_TERM_BUF_SIZE); - - dtrace_proc_str(p, pidbuf); - DTRACE3(process_heap_grow, pidbuf, HEAP_SIZE(p), new_sz); - } -#endif - - ERTS_HEAP_FREE(ERTS_ALC_T_HEAP, - (void *) HEAP_START(p), - (HEAP_END(p) - HEAP_START(p)) * sizeof(Eterm)); - HEAP_START(p) = n_heap; - HEAP_TOP(p) = n_htop; - HEAP_SIZE(p) = new_sz; - HEAP_END(p) = n_heap + new_sz; - GEN_GCS(p) = 0; - - HIGH_WATER(p) = HEAP_TOP(p); - - ErtsGcQuickSanityCheck(p); - - *recl += size_before - (HEAP_TOP(p) - HEAP_START(p)); - - remove_message_buffers(p); - - { - ErlMessage *msgp; - - /* - * Copy newly received message onto the end of the new heap. - */ - for (msgp = p->msg.first; msgp; msgp = msgp->next) { - if (msgp->data.attached) { - ErtsHeapFactory factory; - erts_factory_proc_prealloc_init(&factory, p, - erts_msg_attached_data_size(msgp)); - erts_move_msg_attached_data_to_heap(&factory, msgp); - erts_factory_close(&factory); - ErtsGcQuickSanityCheck(p); - } - } - } - - if (MBUF(p)) { - /* This is a very rare case when distributed messages copied above - * contained maps so big they did not fit on the heap causing the - * factory to create heap frags. - * Solution: Trigger a minor gc (without tenuring) - */ - HIGH_WATER(p) = HEAP_START(p); - done = 0; - } else { - adjust_after_fullsweep(p, need, objv, nobj); - done = 1; - } - - ErtsGcQuickSanityCheck(p); - return done; + return n_htop; } -static void +static int adjust_after_fullsweep(Process *p, int need, Eterm *objv, int nobj) { + int adjusted = 0; Uint wanted, sz, need_after; Uint stack_size = STACK_SZ_ON_HEAP(p); @@ -1493,6 +1618,7 @@ adjust_after_fullsweep(Process *p, int need, Eterm *objv, int nobj) /* Too small - grow to match requested need */ sz = next_heap_size(p, need_after, 0); grow_new_heap(p, sz, objv, nobj); + adjusted = 1; } else if (3 * HEAP_SIZE(p) < 4 * need_after){ /* Need more than 75% of current, postpone to next GC.*/ FLAGS(p) |= F_HEAP_GROW; @@ -1509,25 +1635,10 @@ adjust_after_fullsweep(Process *p, int need, Eterm *objv, int nobj) if (sz < HEAP_SIZE(p)) { shrink_new_heap(p, sz, objv, nobj); + adjusted = 1; } } -} - -/* - * Return the size of all message buffers that are NOT linked in the - * mbuf list. - */ -static Uint -combined_message_size(Process* p) -{ - Uint sz; - ErlMessage *msgp; - - for (sz = 0, msgp = p->msg.first; msgp; msgp = msgp->next) { - if (msgp->data.attached) - sz += erts_msg_attached_data_size(msgp); - } - return sz; + return adjusted; } /* @@ -1540,6 +1651,10 @@ remove_message_buffers(Process* p) free_message_buffer(MBUF(p)); MBUF(p) = NULL; } + if (p->msg_frag) { + erts_cleanup_messages(p->msg_frag); + p->msg_frag = NULL; + } MBUF_SIZE(p) = 0; } #ifdef HARDDEBUG @@ -1551,64 +1666,6 @@ remove_message_buffers(Process* p) * For performance reasons, we use _unchecked_list_val(), _unchecked_boxed_val(), * and so on to avoid a function call. */ - -static void -disallow_heap_frag_ref(Process* p, Eterm* n_htop, Eterm* objv, int nobj) -{ - ErlHeapFragment* mbuf; - ErlHeapFragment* qb; - Eterm gval; - Eterm* ptr; - Eterm val; - - ASSERT(p->htop != NULL); - mbuf = MBUF(p); - - while (nobj--) { - gval = *objv; - - switch (primary_tag(gval)) { - - case TAG_PRIMARY_BOXED: { - ptr = _unchecked_boxed_val(gval); - val = *ptr; - if (IS_MOVED_BOXED(val)) { - ASSERT(is_boxed(val)); - objv++; - } else { - for (qb = mbuf; qb != NULL; qb = qb->next) { - if (in_area(ptr, qb->mem, qb->alloc_size*sizeof(Eterm))) { - abort(); - } - } - objv++; - } - break; - } - - case TAG_PRIMARY_LIST: { - ptr = _unchecked_list_val(gval); - val = *ptr; - if (IS_MOVED_CONS(val)) { - objv++; - } else { - for (qb = mbuf; qb != NULL; qb = qb->next) { - if (in_area(ptr, qb->mem, qb->alloc_size*sizeof(Eterm))) { - abort(); - } - } - objv++; - } - break; - } - - default: { - objv++; - break; - } - } - } -} static void disallow_heap_frag_ref_in_heap(Process* p) @@ -1636,9 +1693,9 @@ disallow_heap_frag_ref_in_heap(Process* p) switch (primary_tag(val)) { case TAG_PRIMARY_BOXED: ptr = _unchecked_boxed_val(val); - if (!in_area(ptr, heap, heap_size)) { + if (!ErtsInArea(ptr, heap, heap_size)) { for (qb = MBUF(p); qb != NULL; qb = qb->next) { - if (in_area(ptr, qb->mem, qb->alloc_size*sizeof(Eterm))) { + if (ErtsInArea(ptr, qb->mem, qb->alloc_size*sizeof(Eterm))) { abort(); } } @@ -1646,9 +1703,9 @@ disallow_heap_frag_ref_in_heap(Process* p) break; case TAG_PRIMARY_LIST: ptr = _unchecked_list_val(val); - if (!in_area(ptr, heap, heap_size)) { + if (!ErtsInArea(ptr, heap, heap_size)) { for (qb = MBUF(p); qb != NULL; qb = qb->next) { - if (in_area(ptr, qb->mem, qb->alloc_size*sizeof(Eterm))) { + if (ErtsInArea(ptr, qb->mem, qb->alloc_size*sizeof(Eterm))) { abort(); } } @@ -1690,26 +1747,26 @@ disallow_heap_frag_ref_in_old_heap(Process* p) val = *hp++; switch (primary_tag(val)) { case TAG_PRIMARY_BOXED: - ptr = (Eterm *) EXPAND_POINTER(val); - if (!in_area(ptr, old_heap, old_heap_size)) { - if (in_area(ptr, new_heap, new_heap_size)) { + ptr = (Eterm *) val; + if (!ErtsInArea(ptr, old_heap, old_heap_size)) { + if (ErtsInArea(ptr, new_heap, new_heap_size)) { abort(); } for (qb = MBUF(p); qb != NULL; qb = qb->next) { - if (in_area(ptr, qb->mem, qb->alloc_size*sizeof(Eterm))) { + if (ErtsInArea(ptr, qb->mem, qb->alloc_size*sizeof(Eterm))) { abort(); } } } break; case TAG_PRIMARY_LIST: - ptr = (Eterm *) EXPAND_POINTER(val); - if (!in_area(ptr, old_heap, old_heap_size)) { - if (in_area(ptr, new_heap, new_heap_size)) { + ptr = (Eterm *) val; + if (!ErtsInArea(ptr, old_heap, old_heap_size)) { + if (ErtsInArea(ptr, new_heap, new_heap_size)) { abort(); } for (qb = MBUF(p); qb != NULL; qb = qb->next) { - if (in_area(ptr, qb->mem, qb->alloc_size*sizeof(Eterm))) { + if (ErtsInArea(ptr, qb->mem, qb->alloc_size*sizeof(Eterm))) { abort(); } } @@ -1718,7 +1775,7 @@ disallow_heap_frag_ref_in_old_heap(Process* p) case TAG_PRIMARY_HEADER: if (header_is_thing(val)) { hp += _unchecked_thing_arityval(val); - if (!in_area(hp, old_heap, old_heap_size+1)) { + if (!ErtsInArea(hp, old_heap, old_heap_size+1)) { abort(); } } @@ -1728,66 +1785,30 @@ disallow_heap_frag_ref_in_old_heap(Process* p) } #endif -static Eterm* -sweep_rootset(Rootset* rootset, Eterm* htop, char* src, Uint src_size) +typedef enum { + ErtsSweepNewHeap, + ErtsSweepHeaps, + ErtsSweepLiteralArea +} ErtsSweepType; + +static ERTS_FORCE_INLINE Eterm * +sweep(Eterm *n_hp, Eterm *n_htop, + ErtsSweepType type, + char *oh, Uint ohsz, + char *src, Uint src_size) { - Roots* roots = rootset->roots; - Uint n = rootset->num_roots; Eterm* ptr; - Eterm gval; Eterm val; + Eterm gval; - while (n--) { - Eterm* g_ptr = roots->v; - Uint g_sz = roots->sz; - - roots++; - while (g_sz--) { - gval = *g_ptr; - - switch (primary_tag(gval)) { - case TAG_PRIMARY_BOXED: { - ptr = boxed_val(gval); - val = *ptr; - if (IS_MOVED_BOXED(val)) { - ASSERT(is_boxed(val)); - *g_ptr++ = val; - } else if (in_area(ptr, src, src_size)) { - MOVE_BOXED(ptr,val,htop,g_ptr++); - } else { - g_ptr++; - } - break; - } - case TAG_PRIMARY_LIST: { - ptr = list_val(gval); - val = *ptr; - if (IS_MOVED_CONS(val)) { - *g_ptr++ = ptr[1]; - } else if (in_area(ptr, src, src_size)) { - MOVE_CONS(ptr,val,htop,g_ptr++); - } else { - g_ptr++; - } - break; - } - - default: - g_ptr++; - break; - } - } - } - return htop; -} - +#undef ERTS_IS_IN_SWEEP_AREA -static Eterm* -sweep_one_area(Eterm* n_hp, Eterm* n_htop, char* src, Uint src_size) -{ - Eterm* ptr; - Eterm val; - Eterm gval; +#define ERTS_IS_IN_SWEEP_AREA(TPtr, Ptr) \ + (type == ErtsSweepHeaps \ + ? !erts_is_literal((TPtr), (Ptr)) \ + : (type == ErtsSweepNewHeap \ + ? ErtsInYoungGen((TPtr), (Ptr), oh, ohsz) \ + : ErtsInArea((Ptr), src, src_size))) while (n_hp != n_htop) { ASSERT(n_hp < n_htop); @@ -1799,7 +1820,7 @@ sweep_one_area(Eterm* n_hp, Eterm* n_htop, char* src, Uint src_size) if (IS_MOVED_BOXED(val)) { ASSERT(is_boxed(val)); *n_hp++ = val; - } else if (in_area(ptr, src, src_size)) { + } else if (ERTS_IS_IN_SWEEP_AREA(gval, ptr)) { MOVE_BOXED(ptr,val,n_htop,n_hp++); } else { n_hp++; @@ -1811,7 +1832,7 @@ sweep_one_area(Eterm* n_hp, Eterm* n_htop, char* src, Uint src_size) val = *ptr; if (IS_MOVED_CONS(val)) { *n_hp++ = ptr[1]; - } else if (in_area(ptr, src, src_size)) { + } else if (ERTS_IS_IN_SWEEP_AREA(gval, ptr)) { MOVE_CONS(ptr,val,n_htop,n_hp++); } else { n_hp++; @@ -1832,7 +1853,7 @@ sweep_one_area(Eterm* n_hp, Eterm* n_htop, char* src, Uint src_size) if (IS_MOVED_BOXED(val)) { *origptr = val; mb->base = binary_bytes(*origptr); - } else if (in_area(ptr, src, src_size)) { + } else if (ERTS_IS_IN_SWEEP_AREA(*origptr, ptr)) { MOVE_BOXED(ptr,val,n_htop,origptr); mb->base = binary_bytes(*origptr); } @@ -1847,10 +1868,41 @@ sweep_one_area(Eterm* n_hp, Eterm* n_htop, char* src, Uint src_size) } } return n_htop; +#undef ERTS_IS_IN_SWEEP_AREA +} + +static Eterm * +sweep_new_heap(Eterm *n_hp, Eterm *n_htop, char* old_heap, Uint old_heap_size) +{ + return sweep(n_hp, n_htop, + ErtsSweepNewHeap, + old_heap, old_heap_size, + NULL, 0); +} + +static Eterm * +sweep_heaps(Eterm *n_hp, Eterm *n_htop, char* old_heap, Uint old_heap_size) +{ + return sweep(n_hp, n_htop, + ErtsSweepHeaps, + old_heap, old_heap_size, + NULL, 0); +} + +static Eterm * +sweep_literal_area(Eterm *n_hp, Eterm *n_htop, + char* old_heap, Uint old_heap_size, + char* src, Uint src_size) +{ + return sweep(n_hp, n_htop, + ErtsSweepLiteralArea, + old_heap, old_heap_size, + src, src_size); } static Eterm* -sweep_one_heap(Eterm* heap_ptr, Eterm* heap_end, Eterm* htop, char* src, Uint src_size) +sweep_literals_to_old_heap(Eterm* heap_ptr, Eterm* heap_end, Eterm* htop, + char* src, Uint src_size) { while (heap_ptr < heap_end) { Eterm* ptr; @@ -1864,7 +1916,7 @@ sweep_one_heap(Eterm* heap_ptr, Eterm* heap_end, Eterm* htop, char* src, Uint sr if (IS_MOVED_BOXED(val)) { ASSERT(is_boxed(val)); *heap_ptr++ = val; - } else if (in_area(ptr, src, src_size)) { + } else if (ErtsInArea(ptr, src, src_size)) { MOVE_BOXED(ptr,val,htop,heap_ptr++); } else { heap_ptr++; @@ -1876,7 +1928,7 @@ sweep_one_heap(Eterm* heap_ptr, Eterm* heap_end, Eterm* htop, char* src, Uint sr val = *ptr; if (IS_MOVED_CONS(val)) { *heap_ptr++ = ptr[1]; - } else if (in_area(ptr, src, src_size)) { + } else if (ErtsInArea(ptr, src, src_size)) { MOVE_CONS(ptr,val,htop,heap_ptr++); } else { heap_ptr++; @@ -1897,7 +1949,7 @@ sweep_one_heap(Eterm* heap_ptr, Eterm* heap_end, Eterm* htop, char* src, Uint sr if (IS_MOVED_BOXED(val)) { *origptr = val; mb->base = binary_bytes(*origptr); - } else if (in_area(ptr, src, src_size)) { + } else if (ErtsInArea(ptr, src, src_size)) { MOVE_BOXED(ptr,val,htop,origptr); mb->base = binary_bytes(*origptr); } @@ -1948,43 +2000,21 @@ move_one_area(Eterm* n_htop, char* src, Uint src_size) */ static Eterm* -collect_heap_frags(Process* p, Eterm* n_hstart, Eterm* n_htop, - Eterm* objv, int nobj) +collect_live_heap_frags(Process* p, ErlHeapFragment *live_hf_end, + Eterm* n_hstart, Eterm* n_htop, + Eterm* objv, int nobj) { ErlHeapFragment* qb; char* frag_begin; Uint frag_size; /* - * We don't allow references to a heap fragments from the stack, heap, - * or process dictionary. - */ -#ifdef HARDDEBUG - disallow_heap_frag_ref(p, n_htop, p->stop, STACK_START(p) - p->stop); - if (p->dictionary != NULL) { - disallow_heap_frag_ref(p, n_htop, p->dictionary->data, p->dictionary->used); - } - /* OTP-18: Actually we do allow references from heap to heap fragments now. - This can happen when doing "binary_to_term" with a "fat" map contained - in another term. A "fat" map is a hashmap with higher heap demand than - first estimated by "binary_to_term" causing the factory to allocate - additional heap (fragments) for the hashmap tree nodes. - Run map_SUITE:t_gc_rare_map_overflow to provoke this. - - Inverted references like this does not matter however. The copy done - below by move_one_area() with move markers in the fragments and the - sweeping done later by the GC should make everything ok in the end. - */ - /***disallow_heap_frag_ref_in_heap(p);***/ -#endif - - /* * Move the heap fragments to the new heap. Note that no GC is done on * the heap fragments. Any garbage will thus be moved as well and survive * until next GC. */ qb = MBUF(p); - while (qb != NULL) { + while (qb != live_hf_end) { ASSERT(!qb->off_heap.first); /* process fragments use the MSO(p) list */ frag_size = qb->used_size * sizeof(Eterm); if (frag_size != 0) { @@ -1996,12 +2026,195 @@ collect_heap_frags(Process* p, Eterm* n_hstart, Eterm* n_htop, return n_htop; } +static ERTS_INLINE void +copy_one_frag(Eterm** hpp, ErlOffHeap* off_heap, + ErlHeapFragment *bp, Eterm *refs, int nrefs) +{ + Uint sz; + int i; + Sint offs; + struct erl_off_heap_header* oh; + Eterm *fhp, *hp; + + OH_OVERHEAD(off_heap, bp->off_heap.overhead); + sz = bp->used_size; + + fhp = bp->mem; + hp = *hpp; + offs = hp - fhp; + + oh = NULL; + while (sz--) { + Uint cpy_sz; + Eterm val = *fhp++; + + switch (primary_tag(val)) { + case TAG_PRIMARY_IMMED1: + *hp++ = val; + break; + case TAG_PRIMARY_LIST: +#ifdef SHCOPY_SEND + if (erts_is_literal(val,list_val(val))) { + *hp++ = val; + } else { + *hp++ = offset_ptr(val, offs); + } +#else + *hp++ = offset_ptr(val, offs); +#endif + break; + case TAG_PRIMARY_BOXED: +#ifdef SHCOPY_SEND + if (erts_is_literal(val,boxed_val(val))) { + *hp++ = val; + } else { + *hp++ = offset_ptr(val, offs); + } +#else + *hp++ = offset_ptr(val, offs); +#endif + break; + case TAG_PRIMARY_HEADER: + *hp++ = val; + switch (val & _HEADER_SUBTAG_MASK) { + case ARITYVAL_SUBTAG: + break; + case REFC_BINARY_SUBTAG: + case FUN_SUBTAG: + case EXTERNAL_PID_SUBTAG: + case EXTERNAL_PORT_SUBTAG: + case EXTERNAL_REF_SUBTAG: + oh = (struct erl_off_heap_header*) (hp-1); + cpy_sz = thing_arityval(val); + goto cpy_words; + default: + cpy_sz = header_arity(val); + + cpy_words: + ASSERT(sz >= cpy_sz); + sz -= cpy_sz; + while (cpy_sz >= 8) { + cpy_sz -= 8; + *hp++ = *fhp++; + *hp++ = *fhp++; + *hp++ = *fhp++; + *hp++ = *fhp++; + *hp++ = *fhp++; + *hp++ = *fhp++; + *hp++ = *fhp++; + *hp++ = *fhp++; + } + switch (cpy_sz) { + case 7: *hp++ = *fhp++; + case 6: *hp++ = *fhp++; + case 5: *hp++ = *fhp++; + case 4: *hp++ = *fhp++; + case 3: *hp++ = *fhp++; + case 2: *hp++ = *fhp++; + case 1: *hp++ = *fhp++; + default: break; + } + if (oh) { + /* Add to offheap list */ + oh->next = off_heap->first; + off_heap->first = oh; + ASSERT(*hpp <= (Eterm*)oh); + ASSERT(hp > (Eterm*)oh); + oh = NULL; + } + break; + } + break; + } + } + + ASSERT(bp->used_size == hp - *hpp); + *hpp = hp; + + for (i = 0; i < nrefs; i++) { + if (is_not_immed(refs[i])) + refs[i] = offset_ptr(refs[i], offs); + } + bp->off_heap.first = NULL; +} + +static void +move_msgq_to_heap(Process *p) +{ + ErtsMessage **mpp = &p->msg.first; + + while (*mpp) { + ErtsMessage *mp = *mpp; + + if (mp->data.attached) { + ErlHeapFragment *bp; + ErtsHeapFactory factory; + + erts_factory_proc_prealloc_init(&factory, p, + erts_msg_attached_data_size(mp)); + + if (is_non_value(ERL_MESSAGE_TERM(mp))) { + if (mp->data.dist_ext) { + ASSERT(mp->data.dist_ext->heap_size >= 0); + if (is_not_nil(ERL_MESSAGE_TOKEN(mp))) { + bp = erts_dist_ext_trailer(mp->data.dist_ext); + ERL_MESSAGE_TOKEN(mp) = copy_struct(ERL_MESSAGE_TOKEN(mp), + bp->used_size, + &factory.hp, + factory.off_heap); + erts_cleanup_offheap(&bp->off_heap); + } + ERL_MESSAGE_TERM(mp) = erts_decode_dist_ext(&factory, + mp->data.dist_ext); + erts_free_dist_ext_copy(mp->data.dist_ext); + mp->data.dist_ext = NULL; + } + } + else { + + if (mp->data.attached == ERTS_MSG_COMBINED_HFRAG) + bp = &mp->hfrag; + else + bp = mp->data.heap_frag; + + if (bp->next) + erts_move_multi_frags(&factory.hp, factory.off_heap, bp, + mp->m, ERL_MESSAGE_REF_ARRAY_SZ, 0); + else + copy_one_frag(&factory.hp, factory.off_heap, bp, + mp->m, ERL_MESSAGE_REF_ARRAY_SZ); + + if (mp->data.attached != ERTS_MSG_COMBINED_HFRAG) { + mp->data.heap_frag = NULL; + free_message_buffer(bp); + } + else { + ErtsMessage *tmp = erts_alloc_message(0, NULL); + sys_memcpy((void *) tmp->m, (void *) mp->m, + sizeof(Eterm)*ERL_MESSAGE_REF_ARRAY_SZ); + tmp->next = mp->next; + if (p->msg.save == &mp->next) + p->msg.save = &tmp->next; + if (p->msg.last == &mp->next) + p->msg.last = &tmp->next; + *mpp = tmp; + mp->next = NULL; + erts_cleanup_messages(mp); + mp = tmp; + } + } + + erts_factory_close(&factory); + } + + mpp = &(*mpp)->next; + } +} + static Uint setup_rootset(Process *p, Eterm *objv, int nobj, Rootset *rootset) { - Uint avail; Roots* roots; - ErlMessage* mp; Uint n; n = 0; @@ -2013,8 +2226,8 @@ setup_rootset(Process *p, Eterm *objv, int nobj, Rootset *rootset) ++n; if (p->dictionary != NULL) { - roots[n].v = p->dictionary->data; - roots[n].sz = p->dictionary->used; + roots[n].v = ERTS_PD_START(p->dictionary); + roots[n].sz = ERTS_PD_SIZE(p->dictionary); ++n; } if (nobj > 0) { @@ -2024,7 +2237,7 @@ setup_rootset(Process *p, Eterm *objv, int nobj, Rootset *rootset) } ASSERT((is_nil(p->seq_trace_token) || - is_tuple(follow_moved(p->seq_trace_token)) || + is_tuple(follow_moved(p->seq_trace_token, (Eterm) 0)) || is_atom(p->seq_trace_token))); if (is_not_immed(p->seq_trace_token)) { roots[n].v = &p->seq_trace_token; @@ -2038,11 +2251,9 @@ setup_rootset(Process *p, Eterm *objv, int nobj, Rootset *rootset) n++; } #endif - ASSERT(is_nil(ERTS_TRACER_PROC(p)) || - is_internal_pid(ERTS_TRACER_PROC(p)) || - is_internal_port(ERTS_TRACER_PROC(p))); + ASSERT(IS_TRACER_VALID(ERTS_TRACER(p))); - ASSERT(is_pid(follow_moved(p->group_leader))); + ASSERT(is_pid(follow_moved(p->group_leader, (Eterm) 0))); if (is_not_immed(p->group_leader)) { roots[n].v = &p->group_leader; roots[n].sz = 1; @@ -2079,31 +2290,47 @@ setup_rootset(Process *p, Eterm *objv, int nobj, Rootset *rootset) ASSERT(n <= rootset->size); - mp = p->msg.first; - avail = rootset->size - n; - while (mp != NULL) { - if (avail == 0) { - Uint new_size = 2*rootset->size; - if (roots == rootset->def) { - roots = erts_alloc(ERTS_ALC_T_ROOTSET, - new_size*sizeof(Roots)); - sys_memcpy(roots, rootset->def, sizeof(rootset->def)); - } else { - roots = erts_realloc(ERTS_ALC_T_ROOTSET, - (void *) roots, - new_size*sizeof(Roots)); - } + switch (p->flags & (F_OFF_HEAP_MSGQ|F_OFF_HEAP_MSGQ_CHNG)) { + case F_OFF_HEAP_MSGQ|F_OFF_HEAP_MSGQ_CHNG: + (void) erts_move_messages_off_heap(p); + case F_OFF_HEAP_MSGQ: + break; + case F_OFF_HEAP_MSGQ_CHNG: + case 0: { + /* + * We do not have off heap message queue enabled, i.e. we + * need to add message queue to rootset... + */ + ErtsMessage *mp; + + /* Ensure large enough rootset... */ + if (n + p->msg.len > rootset->size) { + Uint new_size = n + p->msg.len; + ERTS_GC_ASSERT(roots == rootset->def); + roots = erts_alloc(ERTS_ALC_T_ROOTSET, + new_size*sizeof(Roots)); + sys_memcpy(roots, rootset->def, n*sizeof(Roots)); rootset->size = new_size; - avail = new_size - n; } - if (mp->data.attached == NULL) { - roots[n].v = mp->m; - roots[n].sz = 2; - n++; - avail--; + + for (mp = p->msg.first; mp; mp = mp->next) { + + if (!mp->data.attached) { + /* + * Message may refer data on heap; + * add it to rootset... + */ + roots[n].v = mp->m; + roots[n].sz = ERL_MESSAGE_REF_ARRAY_SZ; + n++; + } } - mp = mp->next; + break; + } } + + ASSERT(rootset->size >= n); + rootset->roots = roots; rootset->num_roots = n; return n; @@ -2343,11 +2570,11 @@ sweep_off_heap(Process *p, int fullsweep) */ while (ptr) { if (IS_MOVED_BOXED(ptr->thing_word)) { - ASSERT(!in_area(ptr, oheap, oheap_sz)); + ASSERT(!ErtsInArea(ptr, oheap, oheap_sz)); *prev = ptr = (struct erl_off_heap_header*) boxed_val(ptr->thing_word); ASSERT(!IS_MOVED_BOXED(ptr->thing_word)); if (ptr->thing_word == HEADER_PROC_BIN) { - int to_new_heap = !in_area(ptr, oheap, oheap_sz); + int to_new_heap = !ErtsInArea(ptr, oheap, oheap_sz); ASSERT(to_new_heap == !seen_mature || (!to_new_heap && (seen_mature=1))); if (to_new_heap) { bin_vheap += ptr->size / sizeof(Eterm); @@ -2361,7 +2588,7 @@ sweep_off_heap(Process *p, int fullsweep) ptr = ptr->next; } } - else if (!in_area(ptr, oheap, oheap_sz)) { + else if (!ErtsInArea(ptr, oheap, oheap_sz)) { /* garbage */ switch (thing_subtag(ptr->thing_word)) { case REFC_BINARY_SUBTAG: @@ -2393,7 +2620,7 @@ sweep_off_heap(Process *p, int fullsweep) * generational collection - keep objects in list. */ while (ptr) { - ASSERT(in_area(ptr, oheap, oheap_sz)); + ASSERT(ErtsInArea(ptr, oheap, oheap_sz)); ASSERT(!IS_MOVED_BOXED(ptr->thing_word)); if (ptr->thing_word == HEADER_PROC_BIN) { BIN_OLD_VHEAP(p) += ptr->size / sizeof(Eterm); /* for binary gc (words)*/ @@ -2412,7 +2639,6 @@ sweep_off_heap(Process *p, int fullsweep) } BIN_VHEAP_SZ(p) = next_vheap_size(p, bin_vheap, BIN_VHEAP_SZ(p)); MSO(p).overhead = bin_vheap; - BIN_VHEAP_MATURE(p) = bin_vheap; /* * If we got any shrink candidates, check them out. @@ -2483,7 +2709,7 @@ offset_heap(Eterm* hp, Uint sz, Sint offs, char* area, Uint area_size) switch (primary_tag(val)) { case TAG_PRIMARY_LIST: case TAG_PRIMARY_BOXED: - if (in_area(ptr_val(val), area, area_size)) { + if (ErtsInArea(ptr_val(val), area, area_size)) { *hp = offset_ptr(val, offs); } hp++; @@ -2505,7 +2731,7 @@ offset_heap(Eterm* hp, Uint sz, Sint offs, char* area, Uint area_size) { struct erl_off_heap_header* oh = (struct erl_off_heap_header*) hp; - if (in_area(oh->next, area, area_size)) { + if (ErtsInArea(oh->next, area, area_size)) { Eterm** uptr = (Eterm **) (void *) &oh->next; *uptr += offs; /* Patch the mso chain */ } @@ -2515,7 +2741,7 @@ offset_heap(Eterm* hp, Uint sz, Sint offs, char* area, Uint area_size) { ErlBinMatchState *ms = (ErlBinMatchState*) hp; ErlBinMatchBuffer *mb = &(ms->mb); - if (in_area(ptr_val(mb->orig), area, area_size)) { + if (ErtsInArea(ptr_val(mb->orig), area, area_size)) { mb->orig = offset_ptr(mb->orig, offs); mb->base = binary_bytes(mb->orig); } @@ -2545,7 +2771,7 @@ offset_heap_ptr(Eterm* hp, Uint sz, Sint offs, char* area, Uint area_size) switch (primary_tag(val)) { case TAG_PRIMARY_LIST: case TAG_PRIMARY_BOXED: - if (in_area(ptr_val(val), area, area_size)) { + if (ErtsInArea(ptr_val(val), area, area_size)) { *hp = offset_ptr(val, offs); } hp++; @@ -2560,7 +2786,7 @@ offset_heap_ptr(Eterm* hp, Uint sz, Sint offs, char* area, Uint area_size) static void offset_off_heap(Process* p, Sint offs, char* area, Uint area_size) { - if (MSO(p).first && in_area((Eterm *)MSO(p).first, area, area_size)) { + if (MSO(p).first && ErtsInArea((Eterm *)MSO(p).first, area, area_size)) { Eterm** uptr = (Eterm**) (void *) &MSO(p).first; *uptr += offs; } @@ -2572,35 +2798,39 @@ offset_off_heap(Process* p, Sint offs, char* area, Uint area_size) static void offset_mqueue(Process *p, Sint offs, char* area, Uint area_size) { - ErlMessage* mp = p->msg.first; - - while (mp != NULL) { - Eterm mesg = ERL_MESSAGE_TERM(mp); - if (is_value(mesg)) { - switch (primary_tag(mesg)) { - case TAG_PRIMARY_LIST: - case TAG_PRIMARY_BOXED: - if (in_area(ptr_val(mesg), area, area_size)) { - ERL_MESSAGE_TERM(mp) = offset_ptr(mesg, offs); + ErtsMessage* mp = p->msg.first; + + if ((p->flags & (F_OFF_HEAP_MSGQ|F_OFF_HEAP_MSGQ_CHNG)) != F_OFF_HEAP_MSGQ) { + + while (mp != NULL) { + Eterm mesg = ERL_MESSAGE_TERM(mp); + if (is_value(mesg)) { + switch (primary_tag(mesg)) { + case TAG_PRIMARY_LIST: + case TAG_PRIMARY_BOXED: + if (ErtsInArea(ptr_val(mesg), area, area_size)) { + ERL_MESSAGE_TERM(mp) = offset_ptr(mesg, offs); + } + break; } - break; } - } - mesg = ERL_MESSAGE_TOKEN(mp); - if (is_boxed(mesg) && in_area(ptr_val(mesg), area, area_size)) { - ERL_MESSAGE_TOKEN(mp) = offset_ptr(mesg, offs); - } + mesg = ERL_MESSAGE_TOKEN(mp); + if (is_boxed(mesg) && ErtsInArea(ptr_val(mesg), area, area_size)) { + ERL_MESSAGE_TOKEN(mp) = offset_ptr(mesg, offs); + } #ifdef USE_VM_PROBES - mesg = ERL_MESSAGE_DT_UTAG(mp); - if (is_boxed(mesg) && in_area(ptr_val(mesg), area, area_size)) { - ERL_MESSAGE_DT_UTAG(mp) = offset_ptr(mesg, offs); - } + mesg = ERL_MESSAGE_DT_UTAG(mp); + if (is_boxed(mesg) && ErtsInArea(ptr_val(mesg), area, area_size)) { + ERL_MESSAGE_DT_UTAG(mp) = offset_ptr(mesg, offs); + } #endif - ASSERT((is_nil(ERL_MESSAGE_TOKEN(mp)) || - is_tuple(ERL_MESSAGE_TOKEN(mp)) || - is_atom(ERL_MESSAGE_TOKEN(mp)))); - mp = mp->next; + ASSERT((is_nil(ERL_MESSAGE_TOKEN(mp)) || + is_tuple(ERL_MESSAGE_TOKEN(mp)) || + is_atom(ERL_MESSAGE_TOKEN(mp)))); + mp = mp->next; + } + } } @@ -2609,8 +2839,8 @@ offset_one_rootset(Process *p, Sint offs, char* area, Uint area_size, Eterm* objv, int nobj) { if (p->dictionary) { - offset_heap(p->dictionary->data, - p->dictionary->used, + offset_heap(ERTS_PD_START(p->dictionary), + ERTS_PD_SIZE(p->dictionary), offs, area, area_size); } @@ -2659,7 +2889,7 @@ reply_gc_info(void *vgcirp) Eterm **hpp; Uint sz, *szp; ErlOffHeap *ohp = NULL; - ErlHeapFragment *bp = NULL; + ErtsMessage *mp = NULL; ASSERT(esdp); @@ -2685,12 +2915,13 @@ reply_gc_info(void *vgcirp) if (hpp) break; - hp = erts_alloc_message_heap(sz, &bp, &ohp, rp, &rp_locks); + mp = erts_alloc_message_heap(rp, &rp_locks, sz, &hp, &ohp); + szp = NULL; hpp = &hp; } - erts_queue_message(rp, &rp_locks, bp, msg, NIL); + erts_queue_message(rp, &rp_locks, mp, msg); if (gcirp->req_sched == esdp->no) rp_locks &= ~ERTS_PROC_LOCK_MAIN; @@ -2737,41 +2968,105 @@ erts_gc_info_request(Process *c_p) return ref; } +Eterm +erts_process_gc_info(Process *p, Uint *sizep, Eterm **hpp) +{ + ERTS_DECL_AM(bin_vheap_size); + ERTS_DECL_AM(bin_vheap_block_size); + ERTS_DECL_AM(bin_old_vheap_size); + ERTS_DECL_AM(bin_old_vheap_block_size); + Eterm tags[] = { + /* If you increase the number of elements here, make sure to update + any call sites as they may have stack allocations that depend + on the number of elements here. */ + am_old_heap_block_size, + am_heap_block_size, + am_mbuf_size, + am_recent_size, + am_stack_size, + am_old_heap_size, + am_heap_size, + AM_bin_vheap_size, + AM_bin_vheap_block_size, + AM_bin_old_vheap_size, + AM_bin_old_vheap_block_size + }; + UWord values[] = { + OLD_HEAP(p) ? OLD_HEND(p) - OLD_HEAP(p) : 0, + HEAP_SIZE(p), + MBUF_SIZE(p), + HIGH_WATER(p) - HEAP_START(p), + STACK_START(p) - p->stop, + OLD_HEAP(p) ? OLD_HTOP(p) - OLD_HEAP(p) : 0, + HEAP_TOP(p) - HEAP_START(p), + MSO(p).overhead, + BIN_VHEAP_SZ(p), + BIN_OLD_VHEAP(p), + BIN_OLD_VHEAP_SZ(p) + }; + + Eterm res = THE_NON_VALUE; + + ERTS_CT_ASSERT(sizeof(values)/sizeof(*values) == sizeof(tags)/sizeof(*tags)); + ERTS_CT_ASSERT(sizeof(values)/sizeof(*values) == ERTS_PROCESS_GC_INFO_MAX_TERMS); + + res = erts_bld_atom_uword_2tup_list(hpp, + sizep, + sizeof(values)/sizeof(*values), + tags, + values); + + return res; +} + #if defined(DEBUG) || defined(ERTS_OFFHEAP_DEBUG) static int within2(Eterm *ptr, Process *p, Eterm *real_htop) { - ErlHeapFragment* bp = MBUF(p); - ErlMessage* mp = p->msg.first; - Eterm *htop = real_htop ? real_htop : HEAP_TOP(p); + ErlHeapFragment* bp; + ErtsMessage* mp; + Eterm *htop, *heap; + + if (p->abandoned_heap) + ERTS_GET_ORIG_HEAP(p, heap, htop); + else { + heap = p->heap; + htop = real_htop ? real_htop : HEAP_TOP(p); + } if (OLD_HEAP(p) && (OLD_HEAP(p) <= ptr && ptr < OLD_HEND(p))) { return 1; } - if (HEAP_START(p) <= ptr && ptr < htop) { + if (heap <= ptr && ptr < htop) { return 1; } - while (bp != NULL) { - if (bp->mem <= ptr && ptr < bp->mem + bp->used_size) { - return 1; - } - bp = bp->next; - } + + mp = p->msg_frag; + bp = p->mbuf; + + if (bp) + goto search_heap_frags; + while (mp) { - if (mp->data.attached) { - ErlHeapFragment *hfp; - if (is_value(ERL_MESSAGE_TERM(mp))) - hfp = mp->data.heap_frag; - else if (is_not_nil(ERL_MESSAGE_TOKEN(mp))) - hfp = erts_dist_ext_trailer(mp->data.dist_ext); - else - hfp = NULL; - if (hfp && hfp->mem <= ptr && ptr < hfp->mem + hfp->used_size) + + if (mp->data.attached == ERTS_MSG_COMBINED_HFRAG) + bp = &mp->hfrag; + else + bp = mp->data.heap_frag; + + mp = mp->next; + + search_heap_frags: + + while (bp) { + if (bp->mem <= ptr && ptr < bp->mem + bp->used_size) { return 1; + } + bp = bp->next; } - mp = mp->next; } + return 0; } @@ -2788,16 +3083,16 @@ within(Eterm *ptr, Process *p) #define ERTS_CHK_OFFHEAP_ASSERT(EXP) \ do { \ if (!(EXP)) \ - erl_exit(ERTS_ABORT_EXIT, \ + erts_exit(ERTS_ABORT_EXIT, \ "%s:%d: Assertion failed: %s\n", \ __FILE__, __LINE__, #EXP); \ } while (0) + #ifdef ERTS_OFFHEAP_DEBUG_CHK_CIRCULAR_LIST # define ERTS_OFFHEAP_VISITED_BIT ((Eterm) 1 << 31) #endif - void erts_check_off_heap2(Process *p, Eterm *htop) { @@ -2826,7 +3121,7 @@ erts_check_off_heap2(Process *p, Eterm *htop) } ERTS_CHK_OFFHEAP_ASSERT(refc >= 1); #ifdef ERTS_OFFHEAP_DEBUG_CHK_CIRCULAR_LIST - ERTS_CHK_OFFHEAP_ASSERT(!(u.hdr->thing_word & ERTS_EXTERNAL_VISITED_BIT)); + ERTS_CHK_OFFHEAP_ASSERT(!(u.hdr->thing_word & ERTS_OFFHEAP_VISITED_BIT)); u.hdr->thing_word |= ERTS_OFFHEAP_VISITED_BIT; #endif if (old) { @@ -2839,7 +3134,7 @@ erts_check_off_heap2(Process *p, Eterm *htop) } } -#ifdef ERTS_OFFHEAP_DEBUG_CHK_CIRCULAR_EXTERNAL_LIST +#ifdef ERTS_OFFHEAP_DEBUG_CHK_CIRCULAR_LIST for (u.hdr = MSO(p).first; u.hdr; u.hdr = u.hdr->next) u.hdr->thing_word &= ~ERTS_OFFHEAP_VISITED_BIT; #endif |