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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; \
}
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