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      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 "bindings/v8/ScriptHeapSnapshot.h"
     33 
     34 #include "bindings/v8/V8Binding.h"
     35 #include "core/platform/JSONValues.h"
     36 #include <v8.h>
     37 #include <v8-profiler.h>
     38 #include "wtf/PassRefPtr.h"
     39 #include "wtf/RefPtr.h"
     40 
     41 namespace WebCore {
     42 
     43 ScriptHeapSnapshot::~ScriptHeapSnapshot()
     44 {
     45     const_cast<v8::HeapSnapshot*>(m_snapshot)->Delete();
     46 }
     47 
     48 String ScriptHeapSnapshot::title() const
     49 {
     50     v8::HandleScope scope;
     51     return toWebCoreString(m_snapshot->GetTitle());
     52 }
     53 
     54 unsigned int ScriptHeapSnapshot::uid() const
     55 {
     56     return m_snapshot->GetUid();
     57 }
     58 
     59 SnapshotObjectId ScriptHeapSnapshot::maxSnapshotJSObjectId() const
     60 {
     61     return m_snapshot->GetMaxSnapshotJSObjectId();
     62 }
     63 
     64 namespace {
     65 
     66 class OutputStreamAdapter : public v8::OutputStream {
     67 public:
     68     OutputStreamAdapter(ScriptHeapSnapshot::OutputStream* output)
     69         : m_output(output) { }
     70     void EndOfStream() { m_output->Close(); }
     71     int GetChunkSize() { return 102400; }
     72     WriteResult WriteAsciiChunk(char* data, int size)
     73     {
     74         m_output->Write(String(data, size));
     75         return kContinue;
     76     }
     77 private:
     78     ScriptHeapSnapshot::OutputStream* m_output;
     79 };
     80 
     81 } // namespace
     82 
     83 void ScriptHeapSnapshot::writeJSON(ScriptHeapSnapshot::OutputStream* stream)
     84 {
     85     OutputStreamAdapter outputStream(stream);
     86     m_snapshot->Serialize(&outputStream, v8::HeapSnapshot::kJSON);
     87 }
     88 
     89 } // namespace WebCore
     90