void CSSParserImpl::parseStyleSheet(const String& string, const CSSParserContext& context, StyleSheetContents* styleSheet)
{
TRACE_EVENT_BEGIN2(
"blink,blink_style", "CSSParserImpl::parseStyleSheet",
"baseUrl", context.baseURL().string().utf8(),
"mode", context.mode());
TRACE_EVENT_BEGIN0("blink,blink_style", "CSSParserImpl::parseStyleSheet.tokenize");
CSSTokenizer::Scope scope(string);
TRACE_EVENT_END0("blink,blink_style", "CSSParserImpl::parseStyleSheet.tokenize");
TRACE_EVENT_BEGIN0("blink,blink_style", "CSSParserImpl::parseStyleSheet.parse");
CSSParserImpl parser(context, styleSheet);
bool firstRuleValid = parser.consumeRuleList(scope.tokenRange(), TopLevelRuleList, [&styleSheet](PassRefPtrWillBeRawPtr<StyleRuleBase> rule) {
if (rule->isCharsetRule())
return;
styleSheet->parserAppendRule(rule);
});
styleSheet->setHasSyntacticallyValidCSSHeader(firstRuleValid);
TRACE_EVENT_END0("blink,blink_style", "CSSParserImpl::parseStyleSheet.parse");
TRACE_EVENT_END2(
"blink,blink_style", "CSSParserImpl::parseStyleSheet",
"tokenCount", scope.tokenCount(),
"length", string.length());
}
void V8GCController::gcPrologue(v8::Isolate* isolate, v8::GCType type, v8::GCCallbackFlags flags)
{
if (isMainThread())
ScriptForbiddenScope::enter();
// TODO(haraken): A GC callback is not allowed to re-enter V8. This means
// that it's unsafe to run Oilpan's GC in the GC callback because it may
// run finalizers that call into V8. To avoid the risk, we should post
// a task to schedule the Oilpan's GC.
// (In practice, there is no finalizer that calls into V8 and thus is safe.)
v8::HandleScope scope(isolate);
switch (type) {
case v8::kGCTypeScavenge:
if (ThreadState::current())
ThreadState::current()->willStartV8GC(BlinkGC::V8MinorGC);
TRACE_EVENT_BEGIN1("devtools.timeline,v8", "MinorGC", "usedHeapSizeBefore", usedHeapSize(isolate));
visitWeakHandlesForMinorGC(isolate);
break;
case v8::kGCTypeMarkSweepCompact:
if (ThreadState::current())
ThreadState::current()->willStartV8GC(BlinkGC::V8MajorGC);
TRACE_EVENT_BEGIN2("devtools.timeline,v8", "MajorGC", "usedHeapSizeBefore", usedHeapSize(isolate), "type", "atomic pause");
gcPrologueForMajorGC(isolate, flags & v8::kGCCallbackFlagConstructRetainedObjectInfos);
break;
case v8::kGCTypeIncrementalMarking:
if (ThreadState::current())
ThreadState::current()->willStartV8GC(BlinkGC::V8MajorGC);
TRACE_EVENT_BEGIN2("devtools.timeline,v8", "MajorGC", "usedHeapSizeBefore", usedHeapSize(isolate), "type", "incremental marking");
gcPrologueForMajorGC(isolate, flags & v8::kGCCallbackFlagConstructRetainedObjectInfos);
break;
case v8::kGCTypeProcessWeakCallbacks:
TRACE_EVENT_BEGIN2("devtools.timeline,v8", "MajorGC", "usedHeapSizeBefore", usedHeapSize(isolate), "type", "weak processing");
break;
default:
ASSERT_NOT_REACHED();
}
}