| /* |
| * 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/core/v8/ScriptProfiler.h" |
| |
| #include "bindings/core/v8/RetainedDOMInfo.h" |
| #include "bindings/core/v8/ScriptValue.h" |
| #include "bindings/core/v8/V8Binding.h" |
| #include "bindings/core/v8/V8Node.h" |
| #include "bindings/core/v8/V8Window.h" |
| #include "bindings/core/v8/WrapperTypeInfo.h" |
| #include "core/dom/Document.h" |
| #include "core/inspector/BindingVisitors.h" |
| #include "wtf/ThreadSpecific.h" |
| |
| #include <v8-profiler.h> |
| #include <v8.h> |
| |
| namespace blink { |
| |
| typedef HashMap<String, double> ProfileNameIdleTimeMap; |
| |
| void ScriptProfiler::setSamplingInterval(int intervalUs) |
| { |
| v8::Isolate* isolate = v8::Isolate::GetCurrent(); |
| v8::CpuProfiler* profiler = isolate->GetCpuProfiler(); |
| if (profiler) |
| profiler->SetSamplingInterval(intervalUs); |
| } |
| |
| 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->StartProfiling(v8String(isolate, title), true); |
| } |
| |
| PassRefPtrWillBeRawPtr<ScriptProfile> ScriptProfiler::stop(const String& title) |
| { |
| v8::Isolate* isolate = v8::Isolate::GetCurrent(); |
| v8::CpuProfiler* profiler = isolate->GetCpuProfiler(); |
| if (!profiler) |
| return nullptr; |
| v8::HandleScope handleScope(isolate); |
| v8::CpuProfile* profile = profiler->StopProfiling(v8String(isolate, title)); |
| if (!profile) |
| return nullptr; |
| |
| String profileTitle = toCoreString(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::Isolate::GetCurrent()->LowMemoryNotification(); |
| } |
| |
| ScriptValue ScriptProfiler::objectByHeapObjectId(unsigned id) |
| { |
| v8::Isolate* isolate = v8::Isolate::GetCurrent(); |
| v8::HeapProfiler* profiler = isolate->GetHeapProfiler(); |
| v8::HandleScope handleScope(isolate); |
| v8::Handle<v8::Value> value = profiler->FindObjectById(id); |
| if (value.IsEmpty() || !value->IsObject()) |
| return ScriptValue(); |
| |
| 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 ScriptValue(); |
| } |
| |
| ScriptState* scriptState = ScriptState::from(object->CreationContext()); |
| return ScriptValue(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; |
| } |
| |
| void ScriptProfiler::clearHeapObjectIds() |
| { |
| v8::Isolate* isolate = v8::Isolate::GetCurrent(); |
| v8::HeapProfiler* profiler = isolate->GetHeapProfiler(); |
| profiler->ClearObjectIds(); |
| } |
| |
| namespace { |
| |
| class ActivityControlAdapter final : public v8::ActivityControl { |
| public: |
| ActivityControlAdapter(ScriptProfiler::HeapSnapshotProgress* progress) |
| : m_progress(progress), m_firstReport(true) { } |
| virtual ControlOption ReportProgressValue(int done, int total) override |
| { |
| 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 final : public v8::HeapProfiler::ObjectNameResolver { |
| public: |
| virtual const char* GetName(v8::Handle<v8::Object> object) override |
| { |
| LocalDOMWindow* window = toDOMWindow(object, v8::Isolate::GetCurrent()); |
| if (!window) |
| return 0; |
| CString url = window->document()->url().string().utf8(); |
| m_strings.append(url); |
| return url.data(); |
| } |
| |
| private: |
| Vector<CString> m_strings; |
| }; |
| |
| } // namespace |
| |
| void ScriptProfiler::startTrackingHeapObjects(bool trackAllocations) |
| { |
| v8::Isolate::GetCurrent()->GetHeapProfiler()->StartTrackingHeapObjects(trackAllocations); |
| } |
| |
| 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 nullptr; |
| v8::HandleScope handleScope(isolate); |
| ASSERT(control); |
| ActivityControlAdapter adapter(control); |
| GlobalObjectNameResolver resolver; |
| const v8::HeapSnapshot* snapshot = profiler->TakeHeapSnapshot(v8String(isolate, title), &adapter, &resolver); |
| return snapshot ? ScriptHeapSnapshot::create(snapshot) : nullptr; |
| } |
| |
| static v8::RetainedObjectInfo* retainedDOMInfo(uint16_t classId, v8::Handle<v8::Value> wrapper) |
| { |
| ASSERT(classId == WrapperTypeInfo::NodeClassId); |
| if (!wrapper->IsObject()) |
| return 0; |
| Node* node = V8Node::toImpl(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(WrapperTypeInfo::NodeClassId, &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) |
| #if ENABLE(ASSERT) |
| , m_isolate(isolate) |
| #endif |
| { |
| } |
| |
| virtual void VisitPersistentHandle(v8::Persistent<v8::Value>* value, uint16_t classId) override |
| { |
| if (classId != WrapperTypeInfo::NodeClassId) |
| return; |
| |
| #if ENABLE(ASSERT) |
| { |
| v8::HandleScope scope(m_isolate); |
| v8::Local<v8::Object> wrapper = v8::Local<v8::Object>::New(m_isolate, v8::Persistent<v8::Object>::Cast(*value)); |
| ASSERT(V8Node::hasInstance(wrapper, m_isolate)); |
| ASSERT(wrapper->IsObject()); |
| } |
| #endif |
| m_visitor->visitNode(toScriptWrappableBase(v8::Persistent<v8::Object>::Cast(*value))->toImpl<Node>()); |
| } |
| |
| private: |
| WrappedNodeVisitor* m_visitor; |
| #if ENABLE(ASSERT) |
| v8::Isolate* m_isolate; |
| #endif |
| } wrapperVisitor(visitor, isolate); |
| |
| v8::V8::VisitHandlesWithClassIds(isolate, &wrapperVisitor); |
| } |
| |
| ProfileNameIdleTimeMap* ScriptProfiler::currentProfileNameIdleTimeMap() |
| { |
| AtomicallyInitializedStatic(WTF::ThreadSpecific<ProfileNameIdleTimeMap>*, map = new WTF::ThreadSpecific<ProfileNameIdleTimeMap>); |
| return *map; |
| } |
| |
| void ScriptProfiler::setIdle(bool isIdle) |
| { |
| v8::Isolate* isolate = v8::Isolate::GetCurrent(); |
| if (v8::CpuProfiler* profiler = isolate->GetCpuProfiler()) |
| profiler->SetIdle(isIdle); |
| } |
| |
| } // namespace blink |