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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 ScriptGCEvent_h
     32 #define ScriptGCEvent_h
     33 
     34 #if ENABLE(INSPECTOR)
     35 
     36 #include "v8.h"
     37 #include <wtf/Vector.h>
     38 
     39 namespace WebCore {
     40 
     41 class ScriptGCEventListener;
     42 
     43 class ScriptGCEvent
     44 {
     45 public:
     46     static void addEventListener(ScriptGCEventListener*);
     47     static void removeEventListener(ScriptGCEventListener*);
     48     static void getHeapSize(size_t&, size_t&, size_t&);
     49 private:
     50     typedef Vector<ScriptGCEventListener*> GCEventListeners;
     51     static GCEventListeners s_eventListeners;
     52     static double s_startTime;
     53     static size_t s_usedHeapSize;
     54 
     55     static void gcEpilogueCallback(v8::GCType type, v8::GCCallbackFlags flags);
     56     static void gcPrologueCallback(v8::GCType type, v8::GCCallbackFlags flags);
     57     static size_t getUsedHeapSize();
     58 };
     59 
     60 } // namespace WebCore
     61 
     62 #endif // !ENABLE(INSPECTOR)
     63 #endif // !defined(ScriptGCEvent_h)
     64