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gecko-dev/js/src/jscompartment.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=4 sw=4 et tw=99:
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "jscntxt.h"
#include "jsdate.h"
#include "jscompartment.h"
#include "jsgc.h"
#include "jsiter.h"
#include "jsmath.h"
#include "jsproxy.h"
#include "jsscope.h"
#include "jswatchpoint.h"
#include "jswrapper.h"
#include "assembler/wtf/Platform.h"
#include "gc/Marking.h"
#include "js/MemoryMetrics.h"
#include "methodjit/MethodJIT.h"
#include "methodjit/PolyIC.h"
#include "methodjit/MonoIC.h"
#include "methodjit/Retcon.h"
#include "vm/Debugger.h"
#include "yarr/BumpPointerAllocator.h"
#include "jsgcinlines.h"
#include "jsobjinlines.h"
#include "jsscopeinlines.h"
#include "ion/IonCompartment.h"
#include "ion/Ion.h"
#if ENABLE_YARR_JIT
#include "assembler/jit/ExecutableAllocator.h"
#endif
using namespace mozilla;
using namespace js;
using namespace js::gc;
JSCompartment::JSCompartment(JSRuntime *rt)
: rt(rt),
principals(NULL),
global_(NULL),
#ifdef JSGC_GENERATIONAL
gcStoreBuffer(&gcNursery),
#endif
needsBarrier_(false),
ionUsingBarriers_(false),
gcScheduled(false),
gcState(NoGC),
gcPreserveCode(false),
gcBytes(0),
gcTriggerBytes(0),
gcHeapGrowthFactor(3.0),
gcNextCompartment(NULL),
hold(false),
isSystemCompartment(false),
lastCodeRelease(0),
analysisLifoAlloc(LIFO_ALLOC_PRIMARY_CHUNK_SIZE),
typeLifoAlloc(LIFO_ALLOC_PRIMARY_CHUNK_SIZE),
data(NULL),
active(false),
lastAnimationTime(0),
regExps(rt),
propertyTree(thisForCtor()),
gcMallocAndFreeBytes(0),
gcTriggerMallocAndFreeBytes(0),
gcMallocBytes(0),
debugModeBits(rt->debugMode ? DebugFromC : 0),
watchpointMap(NULL),
scriptCountsMap(NULL),
debugScriptMap(NULL)
#ifdef JS_ION
, ionCompartment_(NULL)
#endif
{
setGCMaxMallocBytes(rt->gcMaxMallocBytes * 0.9);
}
JSCompartment::~JSCompartment()
{
#ifdef JS_ION
js_delete(ionCompartment_);
#endif
js_delete(watchpointMap);
js_delete(scriptCountsMap);
js_delete(debugScriptMap);
}
bool
JSCompartment::init(JSContext *cx)
{
/*
* As a hack, we clear our timezone cache every time we create a new
* compartment. This ensures that the cache is always relatively fresh, but
* shouldn't interfere with benchmarks which create tons of date objects
* (unless they also create tons of iframes, which seems unlikely).
*/
js_ClearDateCaches();
activeAnalysis = activeInference = false;
types.init(cx);
if (!crossCompartmentWrappers.init())
return false;
if (!regExps.init(cx))
return false;
#ifdef JSGC_GENERATIONAL
/*
* If we are in the middle of post-barrier verification, we need to
* immediately begin collecting verification data on new compartments.
*/
if (rt->gcVerifyPostData) {
if (!gcNursery.enable())
return false;
if (!gcStoreBuffer.enable())
return false;
} else {
gcNursery.disable();
gcStoreBuffer.disable();
}
#endif
return debuggees.init();
}
void
JSCompartment::setNeedsBarrier(bool needs, ShouldUpdateIon updateIon)
{
#ifdef JS_METHODJIT
/* ClearAllFrames calls compileBarriers() and needs the old value. */
bool old = compileBarriers();
if (compileBarriers(needs) != old)
mjit::ClearAllFrames(this);
#endif
#ifdef JS_ION
if (updateIon == UpdateIon && needs != ionUsingBarriers_) {
ion::ToggleBarriers(this, needs);
ionUsingBarriers_ = needs;
}
#endif
needsBarrier_ = needs;
}
#ifdef JS_ION
bool
JSCompartment::ensureIonCompartmentExists(JSContext *cx)
{
using namespace js::ion;
if (ionCompartment_)
return true;
/* Set the compartment early, so linking works. */
ionCompartment_ = cx->new_<IonCompartment>();
if (!ionCompartment_ || !ionCompartment_->initialize(cx)) {
if (ionCompartment_)
delete ionCompartment_;
ionCompartment_ = NULL;
return false;
}
return true;
}
#endif
static bool
WrapForSameCompartment(JSContext *cx, HandleObject obj, Value *vp)
{
JS_ASSERT(cx->compartment == obj->compartment());
if (!cx->runtime->sameCompartmentWrapObjectCallback) {
vp->setObject(*obj);
return true;
}
JSObject *wrapped = cx->runtime->sameCompartmentWrapObjectCallback(cx, obj);
if (!wrapped)
return false;
vp->setObject(*wrapped);
return true;
}
bool
JSCompartment::wrap(JSContext *cx, Value *vp)
{
JS_ASSERT(cx->compartment == this);
unsigned flags = 0;
JS_CHECK_RECURSION(cx, return false);
#ifdef DEBUG
struct AutoDisableProxyCheck {
JSRuntime *runtime;
AutoDisableProxyCheck(JSRuntime *rt) : runtime(rt) {
runtime->gcDisableStrictProxyCheckingCount++;
}
~AutoDisableProxyCheck() { runtime->gcDisableStrictProxyCheckingCount--; }
} adpc(rt);
#endif
/* Only GC things have to be wrapped or copied. */
if (!vp->isMarkable())
return true;
if (vp->isString()) {
JSString *str = vp->toString();
/* If the string is already in this compartment, we are done. */
if (str->compartment() == this)
return true;
/* If the string is an atom, we don't have to copy. */
if (str->isAtom()) {
JS_ASSERT(str->compartment() == cx->runtime->atomsCompartment);
return true;
}
}
/*
* Wrappers should really be parented to the wrapped parent of the wrapped
* object, but in that case a wrapped global object would have a NULL
* parent without being a proper global object (JSCLASS_IS_GLOBAL). Instead,
* we parent all wrappers to the global object in their home compartment.
* This loses us some transparency, and is generally very cheesy.
*/
HandleObject global = cx->global();
/* Unwrap incoming objects. */
if (vp->isObject()) {
Rooted<JSObject*> obj(cx, &vp->toObject());
if (obj->compartment() == this)
return WrapForSameCompartment(cx, obj, vp);
/* Translate StopIteration singleton. */
if (obj->isStopIteration()) {
RootedValue vvp(cx, *vp);
bool result = js_FindClassObject(cx, JSProto_StopIteration, &vvp);
*vp = vvp;
return result;
}
/* Unwrap the object, but don't unwrap outer windows. */
obj = UnwrapObject(&vp->toObject(), /* stopAtOuter = */ true, &flags);
if (obj->compartment() == this)
return WrapForSameCompartment(cx, obj, vp);
if (cx->runtime->preWrapObjectCallback) {
obj = cx->runtime->preWrapObjectCallback(cx, global, obj, flags);
if (!obj)
return false;
}
if (obj->compartment() == this)
return WrapForSameCompartment(cx, obj, vp);
vp->setObject(*obj);
#ifdef DEBUG
{
JSObject *outer = GetOuterObject(cx, obj);
JS_ASSERT(outer && outer == obj);
}
#endif
}
RootedValue key(cx, *vp);
/* If we already have a wrapper for this value, use it. */
if (WrapperMap::Ptr p = crossCompartmentWrappers.lookup(key)) {
*vp = p->value;
if (vp->isObject()) {
RootedObject obj(cx, &vp->toObject());
JS_ASSERT(obj->isCrossCompartmentWrapper());
JS_ASSERT(obj->getParent() == global);
}
return true;
}
if (vp->isString()) {
RootedValue orig(cx, *vp);
JSStableString *str = vp->toString()->ensureStable(cx);
if (!str)
return false;
JSString *wrapped = js_NewStringCopyN(cx, str->chars().get(), str->length());
if (!wrapped)
return false;
vp->setString(wrapped);
return crossCompartmentWrappers.put(orig, *vp);
}
RootedObject obj(cx, &vp->toObject());
JSObject *proto = Proxy::LazyProto;
/*
* We hand in the original wrapped object into the wrap hook to allow
* the wrap hook to reason over what wrappers are currently applied
* to the object.
*/
RootedObject wrapper(cx, cx->runtime->wrapObjectCallback(cx, obj, proto, global, flags));
if (!wrapper)
return false;
// We maintain the invariant that the key in the cross-compartment wrapper
// map is always directly wrapped by the value.
JS_ASSERT(Wrapper::wrappedObject(wrapper) == &key.get().toObject());
vp->setObject(*wrapper);
if (!crossCompartmentWrappers.put(key, *vp))
return false;
return true;
}
bool
JSCompartment::wrap(JSContext *cx, JSString **strp)
{
RootedValue value(cx, StringValue(*strp));
if (!wrap(cx, value.address()))
return false;
*strp = value.get().toString();
return true;
}
bool
JSCompartment::wrap(JSContext *cx, HeapPtrString *strp)
{
RootedValue value(cx, StringValue(*strp));
if (!wrap(cx, value.address()))
return false;
*strp = value.get().toString();
return true;
}
bool
JSCompartment::wrap(JSContext *cx, JSObject **objp)
{
if (!*objp)
return true;
RootedValue value(cx, ObjectValue(**objp));
if (!wrap(cx, value.address()))
return false;
*objp = &value.get().toObject();
return true;
}
bool
JSCompartment::wrapId(JSContext *cx, jsid *idp)
{
if (JSID_IS_INT(*idp))
return true;
RootedValue value(cx, IdToValue(*idp));
if (!wrap(cx, value.address()))
return false;
return ValueToId(cx, value.get(), idp);
}
bool
JSCompartment::wrap(JSContext *cx, PropertyOp *propp)
{
Value v = CastAsObjectJsval(*propp);
if (!wrap(cx, &v))
return false;
*propp = CastAsPropertyOp(v.toObjectOrNull());
return true;
}
bool
JSCompartment::wrap(JSContext *cx, StrictPropertyOp *propp)
{
Value v = CastAsObjectJsval(*propp);
if (!wrap(cx, &v))
return false;
*propp = CastAsStrictPropertyOp(v.toObjectOrNull());
return true;
}
bool
JSCompartment::wrap(JSContext *cx, PropertyDescriptor *desc)
{
return wrap(cx, &desc->obj) &&
(!(desc->attrs & JSPROP_GETTER) || wrap(cx, &desc->getter)) &&
(!(desc->attrs & JSPROP_SETTER) || wrap(cx, &desc->setter)) &&
wrap(cx, &desc->value);
}
bool
JSCompartment::wrap(JSContext *cx, AutoIdVector &props)
{
jsid *vector = props.begin();
int length = props.length();
for (size_t n = 0; n < size_t(length); ++n) {
if (!wrapId(cx, &vector[n]))
return false;
}
return true;
}
/*
* This method marks pointers that cross compartment boundaries. It should be
* called only for per-compartment GCs, since full GCs naturally follow pointers
* across compartments.
*/
void
JSCompartment::markCrossCompartmentWrappers(JSTracer *trc)
{
JS_ASSERT(!isCollecting());
for (WrapperMap::Enum e(crossCompartmentWrappers); !e.empty(); e.popFront()) {
Value v = e.front().value;
if (e.front().key.kind == CrossCompartmentKey::ObjectWrapper) {
JSObject *wrapper = &v.toObject();
/*
* We have a cross-compartment wrapper. Its private pointer may
* point into the compartment being collected, so we should mark it.
*/
Value referent = GetProxyPrivate(wrapper);
MarkValueRoot(trc, &referent, "cross-compartment wrapper");
JS_ASSERT(referent == GetProxyPrivate(wrapper));
if (IsFunctionProxy(wrapper)) {
Value call = GetProxyCall(wrapper);
MarkValueRoot(trc, &call, "cross-compartment wrapper");
JS_ASSERT(call == GetProxyCall(wrapper));
}
}
}
}
void
JSCompartment::mark(JSTracer *trc)
{
#ifdef JS_ION
if (ionCompartment_)
ionCompartment_->mark(trc, this);
#endif
}
void
JSCompartment::markTypes(JSTracer *trc)
{
/*
* Mark all scripts, type objects and singleton JS objects in the
* compartment. These can be referred to directly by type sets, which we
* cannot modify while code which depends on these type sets is active.
*/
JS_ASSERT(activeAnalysis || isPreservingCode());
for (CellIterUnderGC i(this, FINALIZE_SCRIPT); !i.done(); i.next()) {
JSScript *script = i.get<JSScript>();
MarkScriptRoot(trc, &script, "mark_types_script");
JS_ASSERT(script == i.get<JSScript>());
}
for (size_t thingKind = FINALIZE_OBJECT0; thingKind < FINALIZE_OBJECT_LIMIT; thingKind++) {
ArenaHeader *aheader = arenas.getFirstArena(static_cast<AllocKind>(thingKind));
if (aheader)
rt->gcMarker.pushArenaList(aheader);
}
for (CellIterUnderGC i(this, FINALIZE_TYPE_OBJECT); !i.done(); i.next()) {
types::TypeObject *type = i.get<types::TypeObject>();
MarkTypeObjectRoot(trc, &type, "mark_types_scan");
JS_ASSERT(type == i.get<types::TypeObject>());
}
}
void
JSCompartment::discardJitCode(FreeOp *fop, bool discardConstraints)
{
#ifdef JS_METHODJIT
/*
* Kick all frames on the stack into the interpreter, and release all JIT
* code in the compartment unless code is being preserved, in which case
* purge all caches in the JIT scripts. Even if we are not releasing all
* JIT code, we still need to release code for scripts which are in the
* middle of a native or getter stub call, as these stubs will have been
* redirected to the interpoline.
*/
mjit::ClearAllFrames(this);
if (isPreservingCode()) {
PurgeJITCaches(this);
} else {
# ifdef JS_ION
/* Only mark OSI points if code is being discarded. */
ion::InvalidateAll(fop, this);
# endif
for (CellIterUnderGC i(this, FINALIZE_SCRIPT); !i.done(); i.next()) {
JSScript *script = i.get<JSScript>();
mjit::ReleaseScriptCode(fop, script);
# ifdef JS_ION
ion::FinishInvalidation(fop, script);
# endif
/*
* Use counts for scripts are reset on GC. After discarding code we
* need to let it warm back up to get information such as which
* opcodes are setting array holes or accessing getter properties.
*/
script->resetUseCount();
}
types.sweepCompilerOutputs(fop, discardConstraints);
}
#endif /* JS_METHODJIT */
}
bool
JSCompartment::isDiscardingJitCode(JSTracer *trc)
{
if (!IS_GC_MARKING_TRACER(trc))
return false;
return !gcPreserveCode;
}
void
JSCompartment::sweep(FreeOp *fop, bool releaseTypes)
{
{
gcstats::AutoPhase ap(rt->gcStats, gcstats::PHASE_SWEEP_DISCARD_CODE);
discardJitCode(fop, !activeAnalysis && !gcPreserveCode);
}
/* This function includes itself in PHASE_SWEEP_TABLES. */
sweepCrossCompartmentWrappers();
{
gcstats::AutoPhase ap(rt->gcStats, gcstats::PHASE_SWEEP_TABLES);
/* Remove dead references held weakly by the compartment. */
sweepBaseShapeTable();
sweepInitialShapeTable();
sweepNewTypeObjectTable(newTypeObjects);
sweepNewTypeObjectTable(lazyTypeObjects);
sweepBreakpoints(fop);
if (global_ && !IsObjectMarked(&global_))
global_ = NULL;
#ifdef JS_ION
if (ionCompartment_)
ionCompartment_->sweep(fop);
#endif
/* JIT code can hold references on RegExpShared, so sweep regexps after clearing code. */
regExps.sweep(rt);
}
if (!activeAnalysis && !gcPreserveCode) {
JS_ASSERT(!types.constrainedOutputs);
gcstats::AutoPhase ap(rt->gcStats, gcstats::PHASE_DISCARD_ANALYSIS);
/*
* Clear the analysis pool, but don't release its data yet. While
* sweeping types any live data will be allocated into the pool.
*/
LifoAlloc oldAlloc(typeLifoAlloc.defaultChunkSize());
oldAlloc.steal(&typeLifoAlloc);
/*
* Periodically release observed types for all scripts. This is safe to
* do when there are no frames for the compartment on the stack.
*/
if (active)
releaseTypes = false;
/*
* Sweep analysis information and everything depending on it from the
* compartment, including all remaining mjit code if inference is
* enabled in the compartment.
*/
if (types.inferenceEnabled) {
gcstats::AutoPhase ap2(rt->gcStats, gcstats::PHASE_DISCARD_TI);
for (CellIterUnderGC i(this, FINALIZE_SCRIPT); !i.done(); i.next()) {
RawScript script = i.get<JSScript>();
if (script->types) {
types::TypeScript::Sweep(fop, script);
if (releaseTypes) {
script->types->destroy();
script->types = NULL;
}
}
}
}
{
gcstats::AutoPhase ap2(rt->gcStats, gcstats::PHASE_SWEEP_TYPES);
types.sweep(fop);
}
{
gcstats::AutoPhase ap2(rt->gcStats, gcstats::PHASE_CLEAR_SCRIPT_ANALYSIS);
for (CellIterUnderGC i(this, FINALIZE_SCRIPT); !i.done(); i.next()) {
JSScript *script = i.get<JSScript>();
script->clearAnalysis();
script->clearPropertyReadTypes();
}
}
{
gcstats::AutoPhase ap2(rt->gcStats, gcstats::PHASE_FREE_TI_ARENA);
rt->freeLifoAlloc.transferFrom(&analysisLifoAlloc);
rt->freeLifoAlloc.transferFrom(&oldAlloc);
}
}
active = false;
}
/*
* Remove dead wrappers from the table. We must sweep all compartments, since
* string entries in the crossCompartmentWrappers table are not marked during
* markCrossCompartmentWrappers.
*/
void
JSCompartment::sweepCrossCompartmentWrappers()
{
gcstats::AutoPhase ap(rt->gcStats, gcstats::PHASE_SWEEP_TABLES);
/* Remove dead wrappers from the table. */
for (WrapperMap::Enum e(crossCompartmentWrappers); !e.empty(); e.popFront()) {
CrossCompartmentKey key = e.front().key;
bool keyMarked = IsCellMarked(&key.wrapped);
bool valMarked = IsValueMarked(e.front().value.unsafeGet());
bool dbgMarked = !key.debugger || IsObjectMarked(&key.debugger);
JS_ASSERT_IF(!keyMarked && valMarked, key.kind == CrossCompartmentKey::StringWrapper);
if (!keyMarked || !valMarked || !dbgMarked)
e.removeFront();
else if (key.wrapped != e.front().key.wrapped || key.debugger != e.front().key.debugger)
e.rekeyFront(key);
}
}
void
JSCompartment::purge()
{
dtoaCache.purge();
}
void
JSCompartment::resetGCMallocBytes()
{
gcMallocBytes = ptrdiff_t(gcMaxMallocBytes);
}
void
JSCompartment::setGCMaxMallocBytes(size_t value)
{
/*
* For compatibility treat any value that exceeds PTRDIFF_T_MAX to
* mean that value.
*/
gcMaxMallocBytes = (ptrdiff_t(value) >= 0) ? value : size_t(-1) >> 1;
resetGCMallocBytes();
}
void
JSCompartment::onTooMuchMalloc()
{
TriggerCompartmentGC(this, gcreason::TOO_MUCH_MALLOC);
}
bool
JSCompartment::hasScriptsOnStack()
{
for (AllFramesIter afi(rt->stackSpace); !afi.done(); ++afi) {
#ifdef JS_ION
// If this is an Ion frame, check the IonActivation instead
if (afi.isIon())
continue;
#endif
if (afi.interpFrame()->script()->compartment() == this)
return true;
}
#ifdef JS_ION
for (ion::IonActivationIterator iai(rt); iai.more(); ++iai) {
if (iai.activation()->compartment() == this)
return true;
}
#endif
return false;
}
bool
JSCompartment::setDebugModeFromC(JSContext *cx, bool b, AutoDebugModeGC &dmgc)
{
bool enabledBefore = debugMode();
bool enabledAfter = (debugModeBits & ~unsigned(DebugFromC)) || b;
// Debug mode can be enabled only when no scripts from the target
// compartment are on the stack. It would even be incorrect to discard just
// the non-live scripts' JITScripts because they might share ICs with live
// scripts (bug 632343).
//
// We do allow disabling debug mode while scripts are on the stack. In
// that case the debug-mode code for those scripts remains, so subsequently
// hooks may be called erroneously, even though debug mode is supposedly
// off, and we have to live with it.
//
bool onStack = false;
if (enabledBefore != enabledAfter) {
onStack = hasScriptsOnStack();
if (b && onStack) {
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_DEBUG_NOT_IDLE);
return false;
}
}
debugModeBits = (debugModeBits & ~unsigned(DebugFromC)) | (b ? DebugFromC : 0);
JS_ASSERT(debugMode() == enabledAfter);
if (enabledBefore != enabledAfter) {
updateForDebugMode(cx->runtime->defaultFreeOp(), dmgc);
if (!enabledAfter)
cx->runtime->debugScopes->onCompartmentLeaveDebugMode(this);
}
return true;
}
void
JSCompartment::updateForDebugMode(FreeOp *fop, AutoDebugModeGC &dmgc)
{
for (ContextIter acx(rt); !acx.done(); acx.next()) {
if (acx->compartment == this)
acx->updateJITEnabled();
}
#ifdef JS_METHODJIT
bool enabled = debugMode();
JS_ASSERT_IF(enabled, !hasScriptsOnStack());
for (gc::CellIter i(this, gc::FINALIZE_SCRIPT); !i.done(); i.next()) {
JSScript *script = i.get<JSScript>();
script->debugMode = enabled;
}
// When we change a compartment's debug mode, whether we're turning it
// on or off, we must always throw away all analyses: debug mode
// affects various aspects of the analysis, which then get baked into
// SSA results, which affects code generation in complicated ways. We
// must also throw away all JIT code, as its soundness depends on the
// analyses.
//
// It suffices to do a garbage collection cycle or to finish the
// ongoing GC cycle. The necessary cleanup happens in
// JSCompartment::sweep.
//
// dmgc makes sure we can't forget to GC, but it is also important not
// to run any scripts in this compartment until the dmgc is destroyed.
// That is the caller's responsibility.
if (!rt->isHeapBusy())
dmgc.scheduleGC(this);
#endif
}
bool
JSCompartment::addDebuggee(JSContext *cx, js::GlobalObject *global)
{
bool wasEnabled = debugMode();
if (!debuggees.put(global)) {
js_ReportOutOfMemory(cx);
return false;
}
debugModeBits |= DebugFromJS;
if (!wasEnabled) {
AutoDebugModeGC dmgc(cx->runtime);
updateForDebugMode(cx->runtime->defaultFreeOp(), dmgc);
}
return true;
}
void
JSCompartment::removeDebuggee(FreeOp *fop,
js::GlobalObject *global,
js::GlobalObjectSet::Enum *debuggeesEnum)
{
bool wasEnabled = debugMode();
JS_ASSERT(debuggees.has(global));
if (debuggeesEnum)
debuggeesEnum->removeFront();
else
debuggees.remove(global);
if (debuggees.empty()) {
debugModeBits &= ~DebugFromJS;
if (wasEnabled && !debugMode()) {
AutoDebugModeGC dmgc(rt);
fop->runtime()->debugScopes->onCompartmentLeaveDebugMode(this);
updateForDebugMode(fop, dmgc);
}
}
}
void
JSCompartment::clearBreakpointsIn(FreeOp *fop, js::Debugger *dbg, JSObject *handler)
{
for (gc::CellIter i(this, gc::FINALIZE_SCRIPT); !i.done(); i.next()) {
JSScript *script = i.get<JSScript>();
if (script->hasAnyBreakpointsOrStepMode())
script->clearBreakpointsIn(fop, dbg, handler);
}
}
void
JSCompartment::clearTraps(FreeOp *fop)
{
for (gc::CellIter i(this, gc::FINALIZE_SCRIPT); !i.done(); i.next()) {
JSScript *script = i.get<JSScript>();
if (script->hasAnyBreakpointsOrStepMode())
script->clearTraps(fop);
}
}
void
JSCompartment::sweepBreakpoints(FreeOp *fop)
{
if (JS_CLIST_IS_EMPTY(&rt->debuggerList))
return;
for (CellIterUnderGC i(this, FINALIZE_SCRIPT); !i.done(); i.next()) {
JSScript *script = i.get<JSScript>();
if (!script->hasAnyBreakpointsOrStepMode())
continue;
bool scriptGone = !IsScriptMarked(&script);
JS_ASSERT(script == i.get<JSScript>());
for (unsigned i = 0; i < script->length; i++) {
BreakpointSite *site = script->getBreakpointSite(script->code + i);
if (!site)
continue;
// nextbp is necessary here to avoid possibly reading *bp after
// destroying it.
Breakpoint *nextbp;
for (Breakpoint *bp = site->firstBreakpoint(); bp; bp = nextbp) {
nextbp = bp->nextInSite();
if (scriptGone || !IsObjectMarked(&bp->debugger->toJSObjectRef()))
bp->destroy(fop);
}
}
}
}
void
JSCompartment::sizeOfIncludingThis(JSMallocSizeOfFun mallocSizeOf, size_t *compartmentObject,
TypeInferenceSizes *tiSizes, size_t *shapesCompartmentTables,
size_t *crossCompartmentWrappersArg, size_t *regexpCompartment,
size_t *debuggeesSet)
{
*compartmentObject = mallocSizeOf(this);
sizeOfTypeInferenceData(tiSizes, mallocSizeOf);
*shapesCompartmentTables = baseShapes.sizeOfExcludingThis(mallocSizeOf)
+ initialShapes.sizeOfExcludingThis(mallocSizeOf)
+ newTypeObjects.sizeOfExcludingThis(mallocSizeOf)
+ lazyTypeObjects.sizeOfExcludingThis(mallocSizeOf);
*crossCompartmentWrappersArg = crossCompartmentWrappers.sizeOfExcludingThis(mallocSizeOf);
*regexpCompartment = regExps.sizeOfExcludingThis(mallocSizeOf);
*debuggeesSet = debuggees.sizeOfExcludingThis(mallocSizeOf);
}
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