auto import from //depot/cupcake/@135843

1 files changed, 119 insertions, 0 deletions

diff --git a/WebCore/platform/mac/SoftLinking.h b/WebCore/platform/mac/SoftLinking.h
new file mode 100644
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+++ b/WebCore/platform/mac/SoftLinking.h
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+/*
+ * Copyright (C) 2007 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer. 
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution. 
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#import <wtf/Assertions.h>
+#import <dlfcn.h>
+
+#define SOFT_LINK_LIBRARY(lib) \
+    static void* lib##Library() \
+    { \
+        static void* dylib = dlopen("/usr/lib/" #lib ".dylib", RTLD_NOW); \
+        ASSERT(dylib); \
+        return dylib; \
+    }
+
+#define SOFT_LINK_FRAMEWORK(framework) \
+    static void* framework##Library() \
+    { \
+        static void* frameworkLibrary = dlopen("/System/Library/Frameworks/" #framework ".framework/" #framework, RTLD_NOW); \
+        ASSERT(frameworkLibrary); \
+        return frameworkLibrary; \
+    }
+
+#define SOFT_LINK(framework, functionName, resultType, parameterDeclarations, parameterNames) \
+    static resultType init##functionName parameterDeclarations; \
+    static resultType (*softLink##functionName) parameterDeclarations = init##functionName; \
+    \
+    static resultType init##functionName parameterDeclarations \
+    { \
+        softLink##functionName = (resultType (*) parameterDeclarations) dlsym(framework##Library(), #functionName); \
+        ASSERT(softLink##functionName); \
+        return softLink##functionName parameterNames; \
+    }\
+    \
+    inline resultType functionName parameterDeclarations \
+    {\
+        return softLink##functionName parameterNames; \
+    }
+
+#define SOFT_LINK_CLASS(framework, className) \
+    static Class init##className(); \
+    static Class (*get##className##Class)() = init##className; \
+    static Class class##className; \
+    \
+    static Class className##Function() \
+    { \
+        return class##className; \
+    }\
+    \
+    static Class init##className() \
+    { \
+        framework##Library(); \
+        class##className = objc_getClass(#className); \
+        ASSERT(class##className); \
+        get##className##Class = className##Function; \
+        return class##className; \
+    }
+
+#define SOFT_LINK_POINTER(framework, name, type) \
+    static type init##name(); \
+    static type (*get##name)() = init##name; \
+    static type pointer##name; \
+    \
+    static type name##Function() \
+    { \
+        return pointer##name; \
+    }\
+    \
+    static type init##name() \
+    { \
+        void** pointer = static_cast<void**>(dlsym(framework##Library(), #name)); \
+        ASSERT(pointer); \
+        pointer##name = static_cast<type>(*pointer); \
+        get##name = name##Function; \
+        return pointer##name; \
+    }
+
+#define SOFT_LINK_CONSTANT(framework, name, type) \
+    static type init##name(); \
+    static type (*get##name)() = init##name; \
+    static type constant##name; \
+    \
+    static type name##Function() \
+    { \
+        return constant##name; \
+    }\
+    \
+    static type init##name() \
+    { \
+        void* constant = dlsym(framework##Library(), #name); \
+        ASSERT(constant); \
+        constant##name = *static_cast<type*>(constant); \
+        get##name = name##Function; \
+        return constant##name; \
+    }