| /* |
| * Copyright (C) 2007, 2008, 2011-2016 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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. |
| */ |
| |
| #ifndef BSoftLinking_h |
| #define BSoftLinking_h |
| |
| #include "BAssert.h" |
| #include <dlfcn.h> |
| #include <mutex> |
| |
| #define BSOFT_LINK_PRIVATE_FRAMEWORK(framework) \ |
| static void* framework##Library() \ |
| { \ |
| static void* frameworkLibrary; \ |
| static std::once_flag once; \ |
| std::call_once(once, [] { \ |
| frameworkLibrary = dlopen("/System/Library/PrivateFrameworks/" #framework ".framework/" #framework, RTLD_NOW); \ |
| RELEASE_BASSERT_WITH_MESSAGE(frameworkLibrary, "%s", dlerror()); \ |
| }); \ |
| return frameworkLibrary; \ |
| } |
| |
| #define BSOFT_LINK_FUNCTION(framework, functionName, resultType, parameterDeclarations, parameterNames) \ |
| extern "C" { \ |
| resultType functionName parameterDeclarations; \ |
| } \ |
| static resultType init##functionName parameterDeclarations; \ |
| static resultType (*softLink##functionName) parameterDeclarations = init##functionName; \ |
| \ |
| static resultType init##functionName parameterDeclarations \ |
| { \ |
| static std::once_flag once; \ |
| std::call_once(once, [] { \ |
| softLink##functionName = (resultType (*) parameterDeclarations) dlsym(framework##Library(), #functionName); \ |
| RELEASE_BASSERT_WITH_MESSAGE(softLink##functionName, "%s", dlerror()); \ |
| }); \ |
| return softLink##functionName parameterNames; \ |
| } \ |
| \ |
| inline resultType functionName parameterDeclarations \ |
| { \ |
| return softLink##functionName parameterNames; \ |
| } |
| |
| #endif // BSoftLinking_h |