| /* |
| * Copyright (C) 2010 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/ScriptGCEvent.h" |
| |
| #include "bindings/core/v8/V8Binding.h" |
| #include "core/inspector/ScriptGCEventListener.h" |
| |
| #include "wtf/CurrentTime.h" |
| |
| namespace blink { |
| |
| static GCEventData* isolateGCEventData() |
| { |
| V8PerIsolateData* isolateData = V8PerIsolateData::from(v8::Isolate::GetCurrent()); |
| ASSERT(isolateData); |
| return isolateData->gcEventData(); |
| } |
| |
| void ScriptGCEvent::addEventListener(ScriptGCEventListener* eventListener) |
| { |
| GCEventData::GCEventListeners& listeners = isolateGCEventData()->listeners(); |
| if (listeners.isEmpty()) { |
| v8::V8::AddGCPrologueCallback(ScriptGCEvent::gcPrologueCallback); |
| v8::V8::AddGCEpilogueCallback(ScriptGCEvent::gcEpilogueCallback); |
| } |
| listeners.append(eventListener); |
| } |
| |
| void ScriptGCEvent::removeEventListener(ScriptGCEventListener* eventListener) |
| { |
| ASSERT(eventListener); |
| GCEventData::GCEventListeners& listeners = isolateGCEventData()->listeners(); |
| ASSERT(!listeners.isEmpty()); |
| size_t i = listeners.find(eventListener); |
| ASSERT(i != kNotFound); |
| listeners.remove(i); |
| if (listeners.isEmpty()) { |
| v8::V8::RemoveGCPrologueCallback(ScriptGCEvent::gcPrologueCallback); |
| v8::V8::RemoveGCEpilogueCallback(ScriptGCEvent::gcEpilogueCallback); |
| } |
| } |
| |
| void ScriptGCEvent::getHeapSize(HeapInfo& info) |
| { |
| v8::HeapStatistics heapStatistics; |
| v8::Isolate::GetCurrent()->GetHeapStatistics(&heapStatistics); |
| info.usedJSHeapSize = heapStatistics.used_heap_size(); |
| info.totalJSHeapSize = heapStatistics.total_physical_size(); |
| info.jsHeapSizeLimit = heapStatistics.heap_size_limit(); |
| } |
| |
| size_t ScriptGCEvent::getUsedHeapSize() |
| { |
| v8::HeapStatistics heapStatistics; |
| v8::Isolate::GetCurrent()->GetHeapStatistics(&heapStatistics); |
| return heapStatistics.used_heap_size(); |
| } |
| |
| void ScriptGCEvent::gcPrologueCallback(v8::GCType type, v8::GCCallbackFlags flags) |
| { |
| GCEventData* gcEventData = isolateGCEventData(); |
| gcEventData->setStartTime(WTF::monotonicallyIncreasingTime()); |
| gcEventData->setUsedHeapSize(getUsedHeapSize()); |
| } |
| |
| void ScriptGCEvent::gcEpilogueCallback(v8::GCType type, v8::GCCallbackFlags flags) |
| { |
| GCEventData* gcEventData = isolateGCEventData(); |
| if (!gcEventData->usedHeapSize()) |
| return; |
| double endTime = WTF::monotonicallyIncreasingTime(); |
| size_t usedHeapSize = getUsedHeapSize(); |
| size_t collectedBytes = usedHeapSize > gcEventData->usedHeapSize() ? 0 : gcEventData->usedHeapSize() - usedHeapSize; |
| GCEventData::GCEventListeners& listeners = gcEventData->listeners(); |
| for (GCEventData::GCEventListeners::iterator i = listeners.begin(); i != listeners.end(); ++i) |
| (*i)->didGC(gcEventData->startTime(), endTime, collectedBytes); |
| gcEventData->clear(); |
| } |
| |
| } // namespace blink |
| |