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/*
* Copyright (c) 2011, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if ENABLE(INSPECTOR)
#include "ScriptProfiler.h"
#include "BindingVisitors.h"
#include "MemoryInstrumentation.h"
#include "RetainedDOMInfo.h"
#include "ScriptObject.h"
#include "V8ArrayBufferView.h"
#include "V8Binding.h"
#include "V8DOMMap.h"
#include "V8Node.h"
#include "WrapperTypeInfo.h"
#include <v8-profiler.h>
namespace WebCore {
void ScriptProfiler::start(ScriptState* state, const String& title)
{
v8::HandleScope hs;
v8::CpuProfiler::StartProfiling(v8String(title));
}
void ScriptProfiler::startForPage(Page*, const String& title)
{
return start(0, title);
}
#if ENABLE(WORKERS)
void ScriptProfiler::startForWorkerContext(WorkerContext*, const String& title)
{
return start(0, title);
}
#endif
PassRefPtr<ScriptProfile> ScriptProfiler::stop(ScriptState* state, const String& title)
{
v8::HandleScope hs;
const v8::CpuProfile* profile = state ?
v8::CpuProfiler::StopProfiling(v8String(title), state->context()->GetSecurityToken()) :
v8::CpuProfiler::StopProfiling(v8String(title));
return profile ? ScriptProfile::create(profile) : 0;
}
PassRefPtr<ScriptProfile> ScriptProfiler::stopForPage(Page*, const String& title)
{
// Use null script state to avoid filtering by context security token.
// All functions from all iframes should be visible from Inspector UI.
return stop(0, title);
}
#if ENABLE(WORKERS)
PassRefPtr<ScriptProfile> ScriptProfiler::stopForWorkerContext(WorkerContext*, const String& title)
{
return stop(0, title);
}
#endif
void ScriptProfiler::collectGarbage()
{
v8::V8::LowMemoryNotification();
}
ScriptObject ScriptProfiler::objectByHeapObjectId(unsigned id)
{
// As ids are unique, it doesn't matter which HeapSnapshot owns HeapGraphNode.
// We need to find first HeapSnapshot containing a node with the specified id.
const v8::HeapGraphNode* node = 0;
for (int i = 0, l = v8::HeapProfiler::GetSnapshotsCount(); i < l; ++i) {
const v8::HeapSnapshot* snapshot = v8::HeapProfiler::GetSnapshot(i);
node = snapshot->GetNodeById(id);
if (node)
break;
}
if (!node)
return ScriptObject();
v8::HandleScope scope;
v8::Handle<v8::Value> value = node->GetHeapValue();
if (!value->IsObject())
return ScriptObject();
v8::Handle<v8::Object> object = value.As<v8::Object>();
if (object->InternalFieldCount() >= v8DefaultWrapperInternalFieldCount) {
v8::Handle<v8::Value> wrapper = object->GetInternalField(v8DOMWrapperObjectIndex);
// Skip wrapper boilerplates which are like regular wrappers but don't have
// native object.
if (!wrapper.IsEmpty() && wrapper->IsUndefined())
return ScriptObject();
}
ScriptState* scriptState = ScriptState::forContext(object->CreationContext());
return ScriptObject(scriptState, object);
}
unsigned ScriptProfiler::getHeapObjectId(const ScriptValue& value)
{
v8::SnapshotObjectId id = v8::HeapProfiler::GetSnapshotObjectId(value.v8Value());
return id;
}
namespace {
class ActivityControlAdapter : public v8::ActivityControl {
public:
ActivityControlAdapter(ScriptProfiler::HeapSnapshotProgress* progress)
: m_progress(progress), m_firstReport(true) { }
ControlOption ReportProgressValue(int done, int total)
{
ControlOption result = m_progress->isCanceled() ? kAbort : kContinue;
if (m_firstReport) {
m_firstReport = false;
m_progress->Start(total);
} else
m_progress->Worked(done);
if (done >= total)
m_progress->Done();
return result;
}
private:
ScriptProfiler::HeapSnapshotProgress* m_progress;
bool m_firstReport;
};
} // namespace
PassRefPtr<ScriptHeapSnapshot> ScriptProfiler::takeHeapSnapshot(const String& title, HeapSnapshotProgress* control)
{
v8::HandleScope hs;
ASSERT(control);
ActivityControlAdapter adapter(control);
const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8String(title), v8::HeapSnapshot::kFull, &adapter);
return snapshot ? ScriptHeapSnapshot::create(snapshot) : 0;
}
static v8::RetainedObjectInfo* retainedDOMInfo(uint16_t classId, v8::Handle<v8::Value> wrapper)
{
ASSERT(classId == v8DOMSubtreeClassId);
if (!wrapper->IsObject())
return 0;
Node* node = V8Node::toNative(wrapper.As<v8::Object>());
return node ? new RetainedDOMInfo(node) : 0;
}
void ScriptProfiler::initialize()
{
v8::HeapProfiler::DefineWrapperClass(v8DOMSubtreeClassId, &retainedDOMInfo);
}
void ScriptProfiler::visitNodeWrappers(NodeWrapperVisitor* visitor)
{
class VisitorAdapter : public DOMWrapperMap<Node>::Visitor {
public:
VisitorAdapter(NodeWrapperVisitor* visitor) : m_visitor(visitor) { }
virtual void visitDOMWrapper(DOMDataStore*, Node* node, v8::Persistent<v8::Object>)
{
m_visitor->visitNode(node);
}
private:
NodeWrapperVisitor* m_visitor;
} adapter(visitor);
visitDOMNodes(&adapter);
}
void ScriptProfiler::visitExternalStrings(ExternalStringVisitor* visitor)
{
V8PerIsolateData::current()->visitExternalStrings(visitor);
}
void ScriptProfiler::visitExternalArrays(ExternalArrayVisitor* visitor)
{
class VisitorAdapter : public DOMWrapperMap<void>::Visitor {
public:
VisitorAdapter(ExternalArrayVisitor* visitor) : m_visitor(visitor) { }
virtual void visitDOMWrapper(DOMDataStore*, void* impl, v8::Persistent<v8::Object> v8Object)
{
WrapperTypeInfo* type = V8DOMWrapper::domWrapperType(v8Object);
if (!type->isSubclass(&V8ArrayBufferView::info))
return;
ArrayBufferView* arrayBufferView = V8ArrayBufferView::toNative(v8Object);
m_visitor->visitJSExternalArray(arrayBufferView);
}
private:
ExternalArrayVisitor* m_visitor;
} adapter(visitor);
getDOMObjectMap().visit(0, &adapter);
}
void ScriptProfiler::collectBindingMemoryInfo(MemoryInstrumentation* instrumentation)
{
V8PerIsolateData* data = V8PerIsolateData::current();
instrumentation->addRootObject(data);
}
size_t ScriptProfiler::profilerSnapshotsSize()
{
return v8::HeapProfiler::GetMemorySizeUsedByProfiler();
}
} // namespace WebCore
#endif // ENABLE(INSPECTOR)
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