heap/GCThread.h

   1 /*
   2  * Copyright (C) 2012 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  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  23  * THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef GCThread_h
  27 #define GCThread_h
  28
  29 #include <GCThreadSharedData.h>
  30 #include <wtf/Deque.h>
  31 #include <wtf/OwnPtr.h>
  32 #include <wtf/Threading.h>
  33
  34 namespace JSC {
  35
  36 class CopyVisitor;
  37 class GCThreadSharedData;
  38 class SlotVisitor;
  39
  40 class GCThread {
  41 public:
  42     GCThread(GCThreadSharedData&, SlotVisitor*, CopyVisitor*);
  43
  44     SlotVisitor* slotVisitor();
  45     CopyVisitor* copyVisitor();
  46     ThreadIdentifier threadID();
  47     void initializeThreadID(ThreadIdentifier);
  48
  49     static void gcThreadStartFunc(void*);
  50
  51 private:
  52     void gcThreadMain();
  53     GCPhase waitForNextPhase();
  54
  55     ThreadIdentifier m_threadID;
  56     GCThreadSharedData& m_shared;
  57     OwnPtr<SlotVisitor> m_slotVisitor;
  58     OwnPtr<CopyVisitor> m_copyVisitor;
  59 };
  60
  61 } // namespace JSC
  62
  63 #endif