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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 #ifndef ScriptHeapSnapshot_h
     32 #define ScriptHeapSnapshot_h
     33 
     34 #include "wtf/RefCounted.h"
     35 #include "wtf/text/WTFString.h"
     36 
     37 namespace v8 {
     38 class HeapSnapshot;
     39 }
     40 
     41 namespace WebCore {
     42 
     43 typedef uint32_t SnapshotObjectId;
     44 
     45 class ScriptHeapSnapshot FINAL : public RefCounted<ScriptHeapSnapshot> {
     46 public:
     47     class OutputStream {
     48     public:
     49         virtual ~OutputStream() { }
     50         virtual void Write(const String& chunk) = 0;
     51         virtual void Close() = 0;
     52     };
     53 
     54     static PassRefPtr<ScriptHeapSnapshot> create(const v8::HeapSnapshot* snapshot)
     55     {
     56         return adoptRef(new ScriptHeapSnapshot(snapshot));
     57     }
     58     ~ScriptHeapSnapshot();
     59 
     60     String title() const;
     61     unsigned int uid() const;
     62     void writeJSON(OutputStream* stream);
     63     SnapshotObjectId maxSnapshotJSObjectId() const;
     64 
     65 private:
     66     ScriptHeapSnapshot(const v8::HeapSnapshot* snapshot)
     67         : m_snapshot(snapshot)
     68     {}
     69 
     70     const v8::HeapSnapshot* m_snapshot;
     71 };
     72 
     73 } // namespace WebCore
     74 
     75 #endif // ScriptHeapSnapshot_h
     76