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342 lines
10 KiB
C++
342 lines
10 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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#include "jsgcinlines.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)
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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, 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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fprintf(fp, " valid but not aligned: %lu\n", ULSTAT(unaligned));
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#undef ULSTAT
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}
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#endif
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} //gc
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} //js
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#ifdef JSGC_TESTPILOT
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typedef JSRuntime::GCData GCData;
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JS_PUBLIC_API(bool)
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JS_GetGCInfoEnabled(JSRuntime *rt)
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{
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return rt->gcData.infoEnabled;
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}
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JS_PUBLIC_API(void)
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JS_SetGCInfoEnabled(JSRuntime *rt, bool enabled)
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{
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rt->gcData.infoEnabled = enabled;
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}
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JS_PUBLIC_API(JSGCInfo *)
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JS_GCInfoFront(JSRuntime *rt)
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{
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GCData &data = rt->gcData;
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JS_ASSERT(data.infoEnabled);
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if (!data.count)
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return NULL;
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return &data.info[data.start];
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}
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JS_PUBLIC_API(bool)
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JS_GCInfoPopFront(JSRuntime *rt)
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{
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GCData &data = rt->gcData;
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JS_ASSERT(data.infoEnabled);
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JS_ASSERT(data.count);
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if (data.count >= GCData::INFO_LIMIT) {
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data.count = data.start = 0;
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return true;
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}
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data.start = (data.start + 1) % GCData::INFO_LIMIT;
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data.count -= 1;
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return false;
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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 (void **thingp = conservativeRoots.begin(); thingp != conservativeRoots.end(); ++thingp) {
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void *thing = thingp;
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fprintf(fp, " %p: ", thing);
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switch (GetGCThingTraceKind(thing)) {
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case JSTRACE_OBJECT: {
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JSObject *obj = (JSObject *) 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 *) thing;
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if (str->isLinear()) {
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char buf[50];
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PutEscapedString(buf, sizeof buf, &str->asLinear(), '"');
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fprintf(fp, "string %s", buf);
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} else {
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fprintf(fp, "rope: length %d", (int)str->length());
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}
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break;
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}
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case JSTRACE_SCRIPT: {
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fprintf(fp, "shape");
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break;
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}
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case JSTRACE_SHAPE: {
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fprintf(fp, "shape");
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break;
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}
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case JSTRACE_TYPE_OBJECT: {
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fprintf(fp, "type_object");
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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 *) 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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#if defined(MOZ_GCTIMER) || defined(JSGC_TESTPILOT)
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volatile GCTimer::JSGCReason gcReason = GCTimer::NOREASON;
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const char *gcReasons[] = {" API", "Maybe", "LastC", "DestC", "Compa", "LastD",
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"Malloc", "Refill", "Chunk", "Shape", " None"};
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jsrefcount newChunkCount = 0;
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jsrefcount destroyChunkCount = 0;
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#ifdef MOZ_GCTIMER
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static const char *gcTimerStatPath = NULL;
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#endif
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GCTimer::GCTimer(JSRuntime *rt, JSCompartment *comp)
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: rt(rt), isCompartmental(comp),
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enabled(rt->gcData.isTimerEnabled())
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{
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#ifdef MOZ_GCTIMER
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if (!gcTimerStatPath) {
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gcTimerStatPath = getenv("MOZ_GCTIMER");
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if (!gcTimerStatPath || !gcTimerStatPath[0])
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gcTimerStatPath = "gcTimer.dat";
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}
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if (!strcmp(gcTimerStatPath, "none"))
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enabled = false;
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#endif
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clearTimestamps();
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getFirstEnter();
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enter = PRMJ_Now();
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}
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uint64
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GCTimer::getFirstEnter()
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{
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JSRuntime::GCData &data = rt->gcData;
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if (enabled && !data.firstEnterValid)
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data.setFirstEnter(PRMJ_Now());
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return data.firstEnter;
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}
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#define TIMEDIFF(start, end) ((double)(end - start) / PRMJ_USEC_PER_MSEC)
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void
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GCTimer::finish(bool lastGC)
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{
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#if defined(JSGC_TESTPILOT)
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if (!enabled) {
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newChunkCount = 0;
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destroyChunkCount = 0;
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return;
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}
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#endif
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end = PRMJ_Now();
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if (startMark > 0) {
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double appTime = TIMEDIFF(getFirstEnter(), enter);
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double gcTime = TIMEDIFF(enter, end);
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double waitTime = TIMEDIFF(enter, startMark);
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double markTime = TIMEDIFF(startMark, startSweep);
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double sweepTime = TIMEDIFF(startSweep, sweepDestroyEnd);
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double sweepObjTime = TIMEDIFF(startSweep, sweepObjectEnd);
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double sweepStringTime = TIMEDIFF(sweepObjectEnd, sweepStringEnd);
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double sweepScriptTime = TIMEDIFF(sweepStringEnd, sweepScriptEnd);
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double sweepShapeTime = TIMEDIFF(sweepScriptEnd, sweepShapeEnd);
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double destroyTime = TIMEDIFF(sweepShapeEnd, sweepDestroyEnd);
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double endTime = TIMEDIFF(sweepDestroyEnd, end);
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#if defined(JSGC_TESTPILOT)
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GCData &data = rt->gcData;
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size_t oldLimit = (data.start + data.count) % GCData::INFO_LIMIT;
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data.count += 1;
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JSGCInfo &info = data.info[oldLimit];
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info.appTime = appTime;
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info.gcTime = gcTime;
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info.waitTime = waitTime;
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info.markTime = markTime;
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info.sweepTime = sweepTime;
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info.sweepObjTime = sweepObjTime;
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info.sweepStringTime = sweepStringTime;
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info.sweepScriptTime = sweepScriptTime;
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info.sweepShapeTime = sweepShapeTime;
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info.destroyTime = destroyTime;
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info.endTime = endTime;
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info.isCompartmental = isCompartmental;
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#endif
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#if defined(MOZ_GCTIMER)
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static FILE *gcFile;
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static bool fullFormat;
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if (!gcFile) {
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if (!strcmp(gcTimerStatPath, "stdout")) {
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gcFile = stdout;
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fullFormat = false;
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} else if (!strcmp(gcTimerStatPath, "stderr")) {
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gcFile = stderr;
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fullFormat = false;
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} else {
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gcFile = fopen(gcTimerStatPath, "a");
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JS_ASSERT(gcFile);
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fullFormat = true;
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fprintf(gcFile, " AppTime, Total, Wait, Mark, Sweep, FinObj,"
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" FinStr, SwScripts, SwShapes, Destroy, End, +Chu, -Chu, T, Reason\n");
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}
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}
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if (!fullFormat) {
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fprintf(stderr, "%f %f %f\n",
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TIMEDIFF(enter, end),
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TIMEDIFF(startMark, startSweep),
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TIMEDIFF(startSweep, sweepDestroyEnd));
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} else {
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/* App , Tot , Wai , Mar , Swe , FiO , FiS , SwScr , SwS , Des , End */
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fprintf(gcFile, "%12.0f, %6.1f, %6.1f, %6.1f, %6.1f, %6.1f, %6.1f, %6.1f, %8.1f, %6.1f, %6.1f, ",
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appTime, gcTime, waitTime, markTime, sweepTime, sweepObjTime, sweepStringTime,
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sweepScriptTime, sweepShapeTime, destroyTime, endTime);
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fprintf(gcFile, "%4d, %4d,", newChunkCount, destroyChunkCount);
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fprintf(gcFile, " %s, %s\n", isCompartmental ? "C" : "G", gcReasons[gcReason]);
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}
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fflush(gcFile);
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if (lastGC && gcFile != stdout && gcFile != stderr)
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fclose(gcFile);
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#endif
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}
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newChunkCount = 0;
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destroyChunkCount = 0;
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gcReason = NOREASON;
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}
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#undef TIMEDIFF
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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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