1/* 2 * Copyright (c) 2010, Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#include "config.h" 32#include "ScriptProfiler.h" 33 34#include "InspectorValues.h" 35#include "RetainedDOMInfo.h" 36#include "V8Binding.h" 37#include "V8Node.h" 38 39#include <v8-profiler.h> 40 41namespace WebCore { 42 43#if ENABLE(INSPECTOR) 44void ScriptProfiler::start(ScriptState* state, const String& title) 45{ 46 v8::HandleScope hs; 47 v8::CpuProfiler::StartProfiling(v8String(title)); 48} 49 50PassRefPtr<ScriptProfile> ScriptProfiler::stop(ScriptState* state, const String& title) 51{ 52 v8::HandleScope hs; 53 const v8::CpuProfile* profile = state ? 54 v8::CpuProfiler::StopProfiling(v8String(title), state->context()->GetSecurityToken()) : 55 v8::CpuProfiler::StopProfiling(v8String(title)); 56 return profile ? ScriptProfile::create(profile) : 0; 57} 58 59void ScriptProfiler::collectGarbage() 60{ 61 // NOTE : There is currently no direct way to collect memory from the v8 C++ API 62 // but notifying low-memory forces a mark-compact, which is exactly what we want 63 // in this case. 64 v8::V8::LowMemoryNotification(); 65} 66 67namespace { 68 69class ActivityControlAdapter : public v8::ActivityControl { 70public: 71 ActivityControlAdapter(ScriptProfiler::HeapSnapshotProgress* progress) 72 : m_progress(progress), m_firstReport(true) { } 73 ControlOption ReportProgressValue(int done, int total) 74 { 75 ControlOption result = m_progress->isCanceled() ? kAbort : kContinue; 76 if (m_firstReport) { 77 m_firstReport = false; 78 m_progress->Start(total); 79 } else 80 m_progress->Worked(done); 81 if (done >= total) 82 m_progress->Done(); 83 return result; 84 } 85private: 86 ScriptProfiler::HeapSnapshotProgress* m_progress; 87 bool m_firstReport; 88}; 89 90} // namespace 91 92PassRefPtr<ScriptHeapSnapshot> ScriptProfiler::takeHeapSnapshot(const String& title, HeapSnapshotProgress* control) 93{ 94 v8::HandleScope hs; 95 const v8::HeapSnapshot* snapshot = 0; 96 if (control) { 97 ActivityControlAdapter adapter(control); 98 snapshot = v8::HeapProfiler::TakeSnapshot(v8String(title), v8::HeapSnapshot::kFull, &adapter); 99 } else 100 snapshot = v8::HeapProfiler::TakeSnapshot(v8String(title), v8::HeapSnapshot::kAggregated); 101 return snapshot ? ScriptHeapSnapshot::create(snapshot) : 0; 102} 103 104static v8::RetainedObjectInfo* retainedDOMInfo(uint16_t classId, v8::Handle<v8::Value> wrapper) 105{ 106 ASSERT(classId == v8DOMSubtreeClassId); 107 if (!wrapper->IsObject()) 108 return 0; 109 Node* node = V8Node::toNative(wrapper.As<v8::Object>()); 110 return node ? new RetainedDOMInfo(node) : 0; 111} 112#endif // ENABLE(INSPECTOR) 113 114void ScriptProfiler::initialize() 115{ 116#if ENABLE(INSPECTOR) 117 v8::HeapProfiler::DefineWrapperClass(v8DOMSubtreeClassId, &retainedDOMInfo); 118#endif // ENABLE(INSPECTOR) 119} 120 121 122} // namespace WebCore 123