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1/*
2 * Copyright (C) 2007 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// This file intentionally calls objc_finalizeOnMainThread, which is deprecated.
30// According to http://gcc.gnu.org/onlinedocs/gcc-4.2.1/gcc/Diagnostic-Pragmas.html#Diagnostic-Pragmas
31// we need to place this directive before any data or functions are defined.
32#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
33
34#include "config.h"
35#include "WebCoreObjCExtras.h"
36
37#include <objc/objc-auto.h>
38#include <objc/objc-runtime.h>
39#include <wtf/Assertions.h>
40#include <wtf/MainThread.h>
41#include <wtf/Threading.h>
42#include <wtf/UnusedParam.h>
43
44void WebCoreObjCFinalizeOnMainThread(Class cls)
45{
46    // This method relies on threading being initialized by the caller, otherwise
47    // WebCoreObjCScheduleDeallocateOnMainThread will crash.
48#if !defined(BUILDING_ON_TIGER) && !defined(DONT_FINALIZE_ON_MAIN_THREAD)
49    objc_finalizeOnMainThread(cls);
50#else
51    UNUSED_PARAM(cls);
52#endif
53}
54
55#ifdef BUILDING_ON_TIGER
56static inline IMP method_getImplementation(Method method)
57{
58    return method->method_imp;
59}
60#endif
61
62typedef std::pair<Class, id> ClassAndIdPair;
63
64static void deallocCallback(void* context)
65{
66    ClassAndIdPair* pair = static_cast<ClassAndIdPair*>(context);
67
68    Method method = class_getInstanceMethod(pair->first, @selector(dealloc));
69
70    IMP imp = method_getImplementation(method);
71    imp(pair->second, @selector(dealloc));
72
73    delete pair;
74}
75
76bool WebCoreObjCScheduleDeallocateOnMainThread(Class cls, id object)
77{
78    ASSERT([object isKindOfClass:cls]);
79
80    if (isMainThread())
81        return false;
82
83    ClassAndIdPair* pair = new ClassAndIdPair(cls, object);
84    callOnMainThread(deallocCallback, pair);
85    return true;
86}
87
88