mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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405 lines
14 KiB
C++
405 lines
14 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=4 sw=4 et tw=99 ft=cpp:
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla SpiderMonkey JavaScript 1.9 code, released
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* June 30, 2010
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*
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* The Initial Developer of the Original Code is
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* the Mozilla Corporation.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "jstypes.h"
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#include "jscntxt.h"
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#include "jsgcstats.h"
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#include "jsgc.h"
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#include "jsxml.h"
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#include "jsbuiltins.h"
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#include "jscompartment.h"
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using namespace js;
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using namespace js::gc;
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#define UL(x) ((unsigned long)(x))
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#define PERCENT(x,y) (100.0 * (double) (x) / (double) (y))
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namespace js {
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namespace gc {
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#if defined(JS_DUMP_CONSERVATIVE_GC_ROOTS) || defined(JS_GCMETER)
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void
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ConservativeGCStats::dump(FILE *fp)
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{
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size_t words = 0;
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for (size_t i = 0; i != JS_ARRAY_LENGTH(counter); ++i)
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words += counter[i];
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#define ULSTAT(x) ((unsigned long)(x))
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fprintf(fp, "CONSERVATIVE STACK SCANNING:\n");
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fprintf(fp, " number of stack words: %lu\n", ULSTAT(words));
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fprintf(fp, " excluded, low bit set: %lu\n", ULSTAT(counter[CGCT_LOWBITSET]));
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fprintf(fp, " not withing a chunk: %lu\n", ULSTAT(counter[CGCT_NOTCHUNK]));
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fprintf(fp, " not within arena range: %lu\n", ULSTAT(counter[CGCT_NOTARENA]));
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fprintf(fp, " points to free arena: %lu\n", ULSTAT(counter[CGCT_FREEARENA]));
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fprintf(fp, " excluded, wrong tag: %lu\n", ULSTAT(counter[CGCT_WRONGTAG]));
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fprintf(fp, " excluded, not live: %lu\n", ULSTAT(counter[CGCT_NOTLIVE]));
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fprintf(fp, " valid GC things: %lu\n", ULSTAT(counter[CGCT_VALID]));
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#undef ULSTAT
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}
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#endif
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#ifdef JS_GCMETER
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void
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UpdateCompartmentStats(JSCompartment *comp, unsigned thingKind, uint32 nlivearenas,
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uint32 nkilledArenas, uint32 nthings)
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{
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size_t narenas = 0;
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JSGCArenaStats *compSt = &comp->compartmentStats[thingKind];
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JSGCArenaStats *globSt = &comp->rt->globalArenaStats[thingKind];
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narenas = nlivearenas + nkilledArenas;
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JS_ASSERT(narenas >= compSt->livearenas);
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compSt->newarenas = narenas - compSt->livearenas;
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compSt->narenas = narenas;
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compSt->livearenas = nlivearenas;
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if (compSt->maxarenas < narenas)
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compSt->maxarenas = narenas;
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compSt->totalarenas += narenas;
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compSt->nthings = nthings;
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if (compSt->maxthings < nthings)
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compSt->maxthings = nthings;
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compSt->totalthings += nthings;
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globSt->newarenas += compSt->newarenas;
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globSt->narenas += narenas;
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globSt->livearenas += compSt->livearenas;
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globSt->totalarenas += compSt->totalarenas;
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globSt->nthings += compSt->nthings;
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globSt->totalthings += compSt->totalthings;
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if (globSt->maxarenas < compSt->maxarenas)
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globSt->maxarenas = compSt->maxarenas;
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if (globSt->maxthings < compSt->maxthings)
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globSt->maxthings = compSt->maxthings;
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}
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static const char *const GC_ARENA_NAMES[] = {
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"object",
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"function",
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#if JS_HAS_XML_SUPPORT
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"xml",
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#endif
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"short string",
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"string",
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"external_string_0",
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"external_string_1",
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"external_string_2",
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"external_string_3",
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"external_string_4",
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"external_string_5",
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"external_string_6",
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"external_string_7",
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};
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JS_STATIC_ASSERT(JS_ARRAY_LENGTH(GC_ARENA_NAMES) == FINALIZE_LIMIT);
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void GetSizeAndThingsPerArena(int thingKind, size_t &thingSize, size_t &thingsPerArena)
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{
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switch (thingKind) {
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case FINALIZE_OBJECT:
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thingSize = sizeof(JSObject);
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thingsPerArena = Arena<JSObject>::ThingsPerArena;
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break;
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case FINALIZE_STRING:
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case FINALIZE_EXTERNAL_STRING0:
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case FINALIZE_EXTERNAL_STRING1:
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case FINALIZE_EXTERNAL_STRING2:
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case FINALIZE_EXTERNAL_STRING3:
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case FINALIZE_EXTERNAL_STRING4:
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case FINALIZE_EXTERNAL_STRING5:
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case FINALIZE_EXTERNAL_STRING6:
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case FINALIZE_EXTERNAL_STRING7:
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thingSize = sizeof(JSString);
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thingsPerArena = Arena<JSString>::ThingsPerArena;
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break;
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case FINALIZE_SHORT_STRING:
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thingSize = sizeof(JSShortString);
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thingsPerArena = Arena<JSShortString>::ThingsPerArena;
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break;
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case FINALIZE_FUNCTION:
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thingSize = sizeof(JSFunction);
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thingsPerArena = Arena<JSFunction>::ThingsPerArena;
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break;
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#if JS_HAS_XML_SUPPORT
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case FINALIZE_XML:
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thingSize = sizeof(JSXML);
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thingsPerArena = Arena<JSXML>::ThingsPerArena;
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break;
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#endif
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default:
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JS_ASSERT(false);
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}
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}
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void
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DumpArenaStats(JSGCArenaStats *stp, FILE *fp)
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{
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size_t sumArenas = 0, sumTotalArenas = 0, sumThings =0, sumMaxThings = 0;
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size_t sumThingSize = 0, sumTotalThingSize = 0, sumArenaCapacity = 0;
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size_t sumTotalArenaCapacity = 0, sumAlloc = 0, sumLocalAlloc = 0;
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for (int i = 0; i < (int) FINALIZE_LIMIT; i++) {
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JSGCArenaStats *st = &stp[i];
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if (st->maxarenas == 0)
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continue;
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size_t thingSize = 0, thingsPerArena = 0;
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GetSizeAndThingsPerArena(i, thingSize, thingsPerArena);
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fprintf(fp, "%s arenas (thing size %lu, %lu things per arena):\n",
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GC_ARENA_NAMES[i], UL(thingSize), UL(thingsPerArena));
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fprintf(fp, " arenas before GC: %lu\n", UL(st->narenas));
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fprintf(fp, " arenas after GC: %lu (%.1f%%)\n",
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UL(st->livearenas), PERCENT(st->livearenas, st->narenas));
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fprintf(fp, " max arenas: %lu\n", UL(st->maxarenas));
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fprintf(fp, " things: %lu\n", UL(st->nthings));
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fprintf(fp, " GC cell utilization: %.1f%%\n",
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PERCENT(st->nthings, thingsPerArena * st->narenas));
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fprintf(fp, " average cell utilization: %.1f%%\n",
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PERCENT(st->totalthings, thingsPerArena * st->totalarenas));
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fprintf(fp, " max things: %lu\n", UL(st->maxthings));
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fprintf(fp, " alloc attempts: %lu\n", UL(st->alloc));
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fprintf(fp, " alloc without locks: %lu (%.1f%%)\n",
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UL(st->localalloc), PERCENT(st->localalloc, st->alloc));
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sumArenas += st->narenas;
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sumTotalArenas += st->totalarenas;
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sumThings += st->nthings;
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sumMaxThings += st->maxthings;
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sumThingSize += thingSize * st->nthings;
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sumTotalThingSize += size_t(thingSize * st->totalthings);
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sumArenaCapacity += thingSize * thingsPerArena * st->narenas;
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sumTotalArenaCapacity += thingSize * thingsPerArena * st->totalarenas;
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sumAlloc += st->alloc;
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sumLocalAlloc += st->localalloc;
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putc('\n', fp);
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}
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fputs("Never used arenas:\n", fp);
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for (int i = 0; i < (int) FINALIZE_LIMIT; i++) {
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JSGCArenaStats *st = &stp[i];
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if (st->maxarenas != 0)
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continue;
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fprintf(fp, "%s\n", GC_ARENA_NAMES[i]);
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}
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fprintf(fp, "\nTOTAL STATS:\n");
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fprintf(fp, " total GC arenas: %lu\n", UL(sumArenas));
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fprintf(fp, " total GC things: %lu\n", UL(sumThings));
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fprintf(fp, " max total GC things: %lu\n", UL(sumMaxThings));
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fprintf(fp, " GC cell utilization: %.1f%%\n",
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PERCENT(sumThingSize, sumArenaCapacity));
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fprintf(fp, " average cell utilization: %.1f%%\n",
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PERCENT(sumTotalThingSize, sumTotalArenaCapacity));
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fprintf(fp, " alloc attempts: %lu\n", UL(sumAlloc));
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fprintf(fp, " alloc without locks: %lu (%.1f%%)\n",
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UL(sumLocalAlloc), PERCENT(sumLocalAlloc, sumAlloc));
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}
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void
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DumpCompartmentStats(JSCompartment *comp, FILE *fp)
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{
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if (comp->rt->defaultCompartment == comp)
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fprintf(fp, "\n**** DefaultCompartment Allocation Statistics: %p ****\n\n", (void *) comp);
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else
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fprintf(fp, "\n**** Compartment Allocation Statistics: %p ****\n\n", (void *) comp);
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DumpArenaStats(&comp->compartmentStats[0], fp);
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}
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#endif
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} //gc
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} //js
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#ifdef JS_GCMETER
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JS_FRIEND_API(void)
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js_DumpGCStats(JSRuntime *rt, FILE *fp)
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{
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#define ULSTAT(x) UL(rt->gcStats.x)
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if (JS_WANT_GC_METER_PRINT) {
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fprintf(fp, "\n**** Global Arena Allocation Statistics: ****\n");
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DumpArenaStats(&rt->globalArenaStats[0], fp);
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fprintf(fp, " bytes allocated: %lu\n", UL(rt->gcBytes));
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fprintf(fp, " allocation failures: %lu\n", ULSTAT(fail));
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fprintf(fp, "allocation retries after GC: %lu\n", ULSTAT(retry));
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fprintf(fp, " valid lock calls: %lu\n", ULSTAT(lock));
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fprintf(fp, " valid unlock calls: %lu\n", ULSTAT(unlock));
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fprintf(fp, " delayed tracing calls: %lu\n", ULSTAT(unmarked));
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#ifdef DEBUG
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fprintf(fp, " max trace later count: %lu\n", ULSTAT(maxunmarked));
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#endif
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fprintf(fp, "potentially useful GC calls: %lu\n", ULSTAT(poke));
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fprintf(fp, " thing arenas freed so far: %lu\n\n", ULSTAT(afree));
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}
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if (JS_WANT_GC_PER_COMPARTMENT_PRINT)
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for (JSCompartment **c = rt->compartments.begin(); c != rt->compartments.end(); ++c)
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DumpCompartmentStats(*c, fp);
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PodZero(&rt->globalArenaStats);
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if (JS_WANT_CONSERVATIVE_GC_PRINT)
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rt->gcStats.conservative.dump(fp);
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#undef ULSTAT
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}
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#endif
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namespace js {
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#ifdef JS_DUMP_CONSERVATIVE_GC_ROOTS
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void
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GCMarker::dumpConservativeRoots()
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{
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if (!conservativeDumpFileName)
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return;
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FILE *fp;
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if (!strcmp(conservativeDumpFileName, "stdout")) {
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fp = stdout;
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} else if (!strcmp(conservativeDumpFileName, "stderr")) {
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fp = stderr;
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} else if (!(fp = fopen(conservativeDumpFileName, "aw"))) {
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fprintf(stderr,
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"Warning: cannot open %s to dump the conservative roots\n",
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conservativeDumpFileName);
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return;
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}
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conservativeStats.dump(fp);
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for (ConservativeRoot *i = conservativeRoots.begin();
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i != conservativeRoots.end();
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++i) {
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fprintf(fp, " %p: ", i->thing);
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switch (i->traceKind) {
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default:
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JS_NOT_REACHED("Unknown trace kind");
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case JSTRACE_OBJECT: {
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JSObject *obj = (JSObject *) i->thing;
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fprintf(fp, "object %s", obj->getClass()->name);
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break;
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}
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case JSTRACE_STRING: {
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JSString *str = (JSString *) i->thing;
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char buf[50];
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js_PutEscapedString(buf, sizeof buf, str, '"');
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fprintf(fp, "string %s", buf);
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break;
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}
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# if JS_HAS_XML_SUPPORT
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case JSTRACE_XML: {
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JSXML *xml = (JSXML *) i->thing;
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fprintf(fp, "xml %u", (unsigned)xml->xml_class);
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break;
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}
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# endif
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}
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fputc('\n', fp);
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}
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fputc('\n', fp);
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if (fp != stdout && fp != stderr)
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fclose(fp);
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}
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#endif /* JS_DUMP_CONSERVATIVE_GC_ROOTS */
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#ifdef MOZ_GCTIMER
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jsrefcount newChunkCount = 0;
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jsrefcount destroyChunkCount = 0;
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GCTimer::GCTimer() {
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getFirstEnter();
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memset(this, 0, sizeof(GCTimer));
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enter = rdtsc();
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}
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uint64
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GCTimer::getFirstEnter() {
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static uint64 firstEnter = rdtsc();
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return firstEnter;
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}
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void
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GCTimer::finish(bool lastGC) {
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end = rdtsc();
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if (startMark > 0) {
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if (JS_WANT_GC_SUITE_PRINT) {
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fprintf(stderr, "%f %f %f\n",
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(double)(end - enter) / 1e6,
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(double)(startSweep - startMark) / 1e6,
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(double)(sweepDestroyEnd - startSweep) / 1e6);
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} else {
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static FILE *gcFile;
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if (!gcFile) {
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gcFile = fopen("gcTimer.dat", "a");
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fprintf(gcFile, " AppTime, Total, Mark, Sweep, FinObj,");
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fprintf(gcFile, " FinStr, Destroy, newChunks, destoyChunks\n");
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}
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JS_ASSERT(gcFile);
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fprintf(gcFile, "%12.1f, %6.1f, %6.1f, %6.1f, %6.1f, %6.1f, %7.1f, ",
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(double)(enter - getFirstEnter()) / 1e6,
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(double)(end - enter) / 1e6,
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(double)(startSweep - startMark) / 1e6,
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(double)(sweepDestroyEnd - startSweep) / 1e6,
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(double)(sweepObjectEnd - startSweep) / 1e6,
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(double)(sweepStringEnd - sweepObjectEnd) / 1e6,
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(double)(sweepDestroyEnd - sweepStringEnd) / 1e6);
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fprintf(gcFile, "%10d, %10d \n", newChunkCount,
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destroyChunkCount);
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fflush(gcFile);
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if (lastGC) {
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fclose(gcFile);
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gcFile = NULL;
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}
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}
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}
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newChunkCount = 0;
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destroyChunkCount = 0;
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}
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#endif
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} //js
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#undef UL
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#undef PERCENT
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