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      1 /*
      2  * Copyright (C) 2010 Apple 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
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef GCActivityCallback_h
     30 #define GCActivityCallback_h
     31 
     32 #include <wtf/OwnPtr.h>
     33 #include <wtf/PassOwnPtr.h>
     34 
     35 #if USE(CF)
     36 #include <CoreFoundation/CoreFoundation.h>
     37 #endif
     38 
     39 namespace JSC {
     40 
     41 class Heap;
     42 
     43 class GCActivityCallback {
     44 public:
     45     virtual ~GCActivityCallback() {}
     46     virtual void operator()() {}
     47     virtual void synchronize() {}
     48 
     49 protected:
     50     GCActivityCallback() {}
     51 };
     52 
     53 struct DefaultGCActivityCallbackPlatformData;
     54 
     55 class DefaultGCActivityCallback : public GCActivityCallback {
     56 public:
     57     static PassOwnPtr<DefaultGCActivityCallback> create(Heap*);
     58 
     59     DefaultGCActivityCallback(Heap*);
     60     ~DefaultGCActivityCallback();
     61 
     62     void operator()();
     63     void synchronize();
     64 
     65 #if USE(CF)
     66 protected:
     67     DefaultGCActivityCallback(Heap*, CFRunLoopRef);
     68     void commonConstructor(Heap*, CFRunLoopRef);
     69 #endif
     70 
     71 private:
     72     OwnPtr<DefaultGCActivityCallbackPlatformData*> d;
     73 };
     74 
     75 inline PassOwnPtr<DefaultGCActivityCallback> DefaultGCActivityCallback::create(Heap* heap)
     76 {
     77     return adoptPtr(new DefaultGCActivityCallback(heap));
     78 }
     79 
     80 }
     81 
     82 #endif
     83