bindings/runtime_root.h

   1 /*
   2  * Copyright (C) 2004 Apple Computer, 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 COMPUTER, INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef RUNTIME_ROOT_H_
  27 #define RUNTIME_ROOT_H_
  28
  29 #include <CoreFoundation/CoreFoundation.h>
  30
  31 #if ENABLE(JAVA_BINDINGS)
  32 #include "jni_jsobject.h"
  33 #endif
  34 #include "protect.h"
  35
  36 #include <wtf/HashSet.h>
  37 #include <wtf/Noncopyable.h>
  38 #include <wtf/RefCounted.h>
  39
  40 namespace KJS {
  41
  42 class Interpreter;
  43 class JSGlobalObject;
  44 class RuntimeObjectImp;
  45
  46 namespace Bindings {
  47
  48 class RootObject;
  49
  50 typedef PassRefPtr<RootObject> (*CreateRootObjectFunction)(void* nativeHandle);
  51 typedef HashCountedSet<JSObject*> ProtectCountSet;
  52
  53 extern RootObject* findProtectingRootObject(JSObject*);
  54 extern RootObject* findRootObject(JSGlobalObject*);
  55
  56 class RootObject : public RefCounted<RootObject> {
  57     friend class JavaJSObject;
  58
  59 public:
  60     ~RootObject();
  61
  62     static PassRefPtr<RootObject> create(const void* nativeHandle, JSGlobalObject*);
  63
  64     bool isValid() { return m_isValid; }
  65     void invalidate();
  66
  67     void gcProtect(JSObject*);
  68     void gcUnprotect(JSObject*);
  69     bool gcIsProtected(JSObject*);
  70
  71     const void* nativeHandle() const;
  72     JSGlobalObject* globalObject() const;
  73
  74     // Must be called from the thread that will be used to access JavaScript.
  75     static void setCreateRootObject(CreateRootObjectFunction);
  76     static CreateRootObjectFunction createRootObject() {
  77         return _createRootObject;
  78     }
  79
  80     static CFRunLoopRef runLoop() { return _runLoop; }
  81     static CFRunLoopSourceRef performJavaScriptSource() { return _performJavaScriptSource; }
  82
  83 #if ENABLE(JAVA_BINDINGS)
  84     static void dispatchToJavaScriptThread(JSObjectCallContext *context);
  85 #endif
  86
  87     void addRuntimeObject(RuntimeObjectImp*);
  88     void removeRuntimeObject(RuntimeObjectImp*);
  89 private:
  90     RootObject(const void* nativeHandle, JSGlobalObject*);
  91
  92     bool m_isValid;
  93
  94     const void* m_nativeHandle;
  95     ProtectedPtr<JSGlobalObject> m_globalObject;
  96     ProtectCountSet m_protectCountSet;
  97
  98     HashSet<RuntimeObjectImp*> m_runtimeObjects;
  99
 100     static CreateRootObjectFunction _createRootObject;
 101     static CFRunLoopRef _runLoop;
 102     static CFRunLoopSourceRef _performJavaScriptSource;
 103 };
 104
 105 } // namespace Bindings
 106
 107 } // namespace KJS
 108
 109 #endif // RUNTIME_ROOT_H_