| /* |
| * 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" |
| #include "bindings/v8/ScriptProfiler.h" |
| |
| #include "V8Node.h" |
| #include "V8Window.h" |
| #include "bindings/v8/RetainedDOMInfo.h" |
| #include "bindings/v8/ScriptObject.h" |
| #include "bindings/v8/V8Binding.h" |
| #include "bindings/v8/V8DOMWrapper.h" |
| #include "bindings/v8/WrapperTypeInfo.h" |
| #include "core/dom/Document.h" |
| #include "core/inspector/BindingVisitors.h" |
| |
| #include <v8-profiler.h> |
| #include <v8.h> |
| |
| #include "wtf/ThreadSpecific.h" |
| |
| namespace WebCore { |
| |
| typedef HashMap<String, double> ProfileNameIdleTimeMap; |
| |
| void ScriptProfiler::start(const String& title) |
| { |
| ProfileNameIdleTimeMap* profileNameIdleTimeMap = ScriptProfiler::currentProfileNameIdleTimeMap(); |
| if (profileNameIdleTimeMap->contains(title)) |
| return; |
| profileNameIdleTimeMap->add(title, 0); |
| |
| v8::Isolate* isolate = v8::Isolate::GetCurrent(); |
| v8::CpuProfiler* profiler = isolate->GetCpuProfiler(); |
| if (!profiler) |
| return; |
| v8::HandleScope handleScope(isolate); |
| profiler->StartCpuProfiling(v8String(title, isolate), true); |
| } |
| |
| PassRefPtr<ScriptProfile> ScriptProfiler::stop(const String& title) |
| { |
| v8::Isolate* isolate = v8::Isolate::GetCurrent(); |
| v8::CpuProfiler* profiler = isolate->GetCpuProfiler(); |
| if (!profiler) |
| return 0; |
| v8::HandleScope handleScope(isolate); |
| const v8::CpuProfile* profile = profiler->StopCpuProfiling(v8String(title, isolate)); |
| if (!profile) |
| return 0; |
| |
| String profileTitle = toWebCoreString(profile->GetTitle()); |
| double idleTime = 0.0; |
| ProfileNameIdleTimeMap* profileNameIdleTimeMap = ScriptProfiler::currentProfileNameIdleTimeMap(); |
| ProfileNameIdleTimeMap::iterator profileIdleTime = profileNameIdleTimeMap->find(profileTitle); |
| if (profileIdleTime != profileNameIdleTimeMap->end()) { |
| idleTime = profileIdleTime->value * 1000.0; |
| profileNameIdleTimeMap->remove(profileIdleTime); |
| } |
| |
| return ScriptProfile::create(profile, idleTime); |
| } |
| |
| void ScriptProfiler::collectGarbage() |
| { |
| v8::V8::LowMemoryNotification(); |
| } |
| |
| ScriptObject ScriptProfiler::objectByHeapObjectId(unsigned id) |
| { |
| v8::Isolate* isolate = v8::Isolate::GetCurrent(); |
| v8::HeapProfiler* profiler = isolate->GetHeapProfiler(); |
| if (!profiler) |
| return ScriptObject(); |
| // 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 = profiler->GetSnapshotCount(); i < l; ++i) { |
| const v8::HeapSnapshot* snapshot = profiler->GetHeapSnapshot(i); |
| node = snapshot->GetNodeById(id); |
| if (node) |
| break; |
| } |
| if (!node) |
| return ScriptObject(); |
| |
| v8::HandleScope handleScope(isolate); |
| 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::Isolate* isolate = v8::Isolate::GetCurrent(); |
| v8::HeapProfiler* profiler = isolate->GetHeapProfiler(); |
| v8::SnapshotObjectId id = profiler->GetObjectId(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; |
| }; |
| |
| class GlobalObjectNameResolver : public v8::HeapProfiler::ObjectNameResolver { |
| public: |
| virtual const char* GetName(v8::Handle<v8::Object> object) |
| { |
| if (V8DOMWrapper::isWrapperOfType(object, &V8Window::info)) { |
| DOMWindow* window = V8Window::toNative(object); |
| if (window) { |
| CString url = window->document()->url().string().utf8(); |
| m_strings.append(url); |
| return url.data(); |
| } |
| } |
| return 0; |
| } |
| |
| private: |
| Vector<CString> m_strings; |
| }; |
| |
| } // namespace |
| |
| void ScriptProfiler::startTrackingHeapObjects() |
| { |
| v8::Isolate::GetCurrent()->GetHeapProfiler()->StartTrackingHeapObjects(); |
| } |
| |
| namespace { |
| |
| class HeapStatsStream : public v8::OutputStream { |
| public: |
| HeapStatsStream(ScriptProfiler::OutputStream* stream) : m_stream(stream) { } |
| virtual void EndOfStream() OVERRIDE { } |
| |
| virtual WriteResult WriteAsciiChunk(char* data, int size) OVERRIDE |
| { |
| ASSERT(false); |
| return kAbort; |
| } |
| |
| virtual WriteResult WriteHeapStatsChunk(v8::HeapStatsUpdate* updateData, int count) OVERRIDE |
| { |
| Vector<uint32_t> rawData(count * 3); |
| for (int i = 0; i < count; ++i) { |
| int offset = i * 3; |
| rawData[offset] = updateData[i].index; |
| rawData[offset + 1] = updateData[i].count; |
| rawData[offset + 2] = updateData[i].size; |
| } |
| m_stream->write(rawData.data(), rawData.size()); |
| return kContinue; |
| } |
| |
| private: |
| ScriptProfiler::OutputStream* m_stream; |
| }; |
| |
| } |
| |
| unsigned ScriptProfiler::requestHeapStatsUpdate(ScriptProfiler::OutputStream* stream) |
| { |
| HeapStatsStream heapStatsStream(stream); |
| return v8::Isolate::GetCurrent()->GetHeapProfiler()->GetHeapStats(&heapStatsStream); |
| } |
| |
| void ScriptProfiler::stopTrackingHeapObjects() |
| { |
| v8::Isolate::GetCurrent()->GetHeapProfiler()->StopTrackingHeapObjects(); |
| } |
| |
| // FIXME: This method should receive a ScriptState, from which we should retrieve an Isolate. |
| PassRefPtr<ScriptHeapSnapshot> ScriptProfiler::takeHeapSnapshot(const String& title, HeapSnapshotProgress* control) |
| { |
| v8::Isolate* isolate = v8::Isolate::GetCurrent(); |
| v8::HeapProfiler* profiler = isolate->GetHeapProfiler(); |
| if (!profiler) |
| return 0; |
| v8::HandleScope handleScope(isolate); |
| ASSERT(control); |
| ActivityControlAdapter adapter(control); |
| GlobalObjectNameResolver resolver; |
| const v8::HeapSnapshot* snapshot = profiler->TakeHeapSnapshot(v8String(title, isolate), &adapter, &resolver); |
| return snapshot ? ScriptHeapSnapshot::create(snapshot) : 0; |
| } |
| |
| static v8::RetainedObjectInfo* retainedDOMInfo(uint16_t classId, v8::Handle<v8::Value> wrapper) |
| { |
| ASSERT(classId == v8DOMNodeClassId); |
| if (!wrapper->IsObject()) |
| return 0; |
| Node* node = V8Node::toNative(wrapper.As<v8::Object>()); |
| return node ? new RetainedDOMInfo(node) : 0; |
| } |
| |
| void ScriptProfiler::initialize() |
| { |
| v8::Isolate* isolate = v8::Isolate::GetCurrent(); |
| v8::HeapProfiler* profiler = isolate->GetHeapProfiler(); |
| if (profiler) |
| profiler->SetWrapperClassInfoProvider(v8DOMNodeClassId, &retainedDOMInfo); |
| } |
| |
| void ScriptProfiler::visitNodeWrappers(WrappedNodeVisitor* visitor) |
| { |
| // visitNodeWrappers() should receive a ScriptState and retrieve an Isolate |
| // from the ScriptState. |
| v8::Isolate* isolate = v8::Isolate::GetCurrent(); |
| v8::HandleScope handleScope(isolate); |
| |
| class DOMNodeWrapperVisitor : public v8::PersistentHandleVisitor { |
| public: |
| DOMNodeWrapperVisitor(WrappedNodeVisitor* visitor, v8::Isolate* isolate) |
| : m_visitor(visitor) |
| , m_isolate(isolate) |
| { |
| } |
| |
| virtual void VisitPersistentHandle(v8::Persistent<v8::Value>* value, uint16_t classId) OVERRIDE |
| { |
| if (classId != v8DOMNodeClassId) |
| return; |
| // Casting to Handle is safe here, since the Persistent cannot get |
| // GCd during visiting. |
| v8::Handle<v8::Object>* wrapper = reinterpret_cast<v8::Handle<v8::Object>*>(value); |
| ASSERT(V8Node::HasInstanceInAnyWorld(*wrapper, m_isolate)); |
| ASSERT((*wrapper)->IsObject()); |
| m_visitor->visitNode(V8Node::toNative(*wrapper)); |
| } |
| |
| private: |
| WrappedNodeVisitor* m_visitor; |
| v8::Isolate* m_isolate; |
| } wrapperVisitor(visitor, isolate); |
| |
| v8::V8::VisitHandlesWithClassIds(&wrapperVisitor); |
| } |
| |
| ProfileNameIdleTimeMap* ScriptProfiler::currentProfileNameIdleTimeMap() |
| { |
| AtomicallyInitializedStatic(WTF::ThreadSpecific<ProfileNameIdleTimeMap>*, map = new WTF::ThreadSpecific<ProfileNameIdleTimeMap>); |
| return *map; |
| } |
| |
| } // namespace WebCore |