Index: Source/WTF/wtf/Atomics.cpp |
diff --git a/Source/WTF/wtf/Atomics.cpp b/Source/WTF/wtf/Atomics.cpp |
deleted file mode 100644 |
index 0feea153245b119f5dcbfb03d536e51f5dd23a7f..0000000000000000000000000000000000000000 |
--- a/Source/WTF/wtf/Atomics.cpp |
+++ /dev/null |
@@ -1,110 +0,0 @@ |
-/* |
- * Copyright (C) 2007, 2008, 2010, 2012 Apple Inc. All rights reserved. |
- * Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.com) |
- * |
- * 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. |
- * |
- * |
- * Note: The implementations of InterlockedIncrement and InterlockedDecrement are based |
- * on atomic_increment and atomic_exchange_and_add from the Boost C++ Library. The license |
- * is virtually identical to the Apple license above but is included here for completeness. |
- * |
- * Boost Software License - Version 1.0 - August 17th, 2003 |
- * |
- * Permission is hereby granted, free of charge, to any person or organization |
- * obtaining a copy of the software and accompanying documentation covered by |
- * this license (the "Software") to use, reproduce, display, distribute, |
- * execute, and transmit the Software, and to prepare derivative works of the |
- * Software, and to permit third-parties to whom the Software is furnished to |
- * do so, all subject to the following: |
- * |
- * The copyright notices in the Software and this entire statement, including |
- * the above license grant, this restriction and the following disclaimer, |
- * must be included in all copies of the Software, in whole or in part, and |
- * all derivative works of the Software, unless such copies or derivative |
- * works are solely in the form of machine-executable object code generated by |
- * a source language processor. |
- * |
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
- * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
- * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
- * FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
- * DEALINGS IN THE SOFTWARE. |
- */ |
- |
-#include "config.h" |
-#include "Atomics.h" |
- |
-// Some architectures, like MIPS32, don't have GCC implementation for builtin __sync_* functions |
-// with 64 bits variable size. Official GCC answer for the problem: If a target doesn't support |
-// atomic operations on certain variable sizes, you are out of luck with atomicity in that case |
-// (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56296). GCC >= 4.8 will support __atomic_* builtin |
-// functions for this purpose for all the GCC targets, but for current compilers we have to include |
-// our own implementation. |
-#if COMPILER(GCC) && !defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8) && USE(LOCKFREE_THREADSAFEREFCOUNTED) && USE(PTHREADS) |
- |
-#include "ThreadingPrimitives.h" |
- |
-namespace WTF { |
- |
-static const size_t kSwapLockCount = 32; |
-static Mutex s_swapLocks[kSwapLockCount]; |
- |
-static inline Mutex& getSwapLock(const volatile int64_t* addr) |
-{ |
- return s_swapLocks[(reinterpret_cast<intptr_t>(addr) >> 3U) % kSwapLockCount]; |
-} |
- |
-static int64_t atomicStep(int64_t volatile* addend, int64_t step) |
-{ |
- Mutex& mutex = getSwapLock(addend); |
- |
- mutex.lock(); |
- int64_t value = *addend + step; |
- *addend = value; |
- mutex.unlock(); |
- |
- return value; |
-} |
- |
-extern "C" { |
- |
-int64_t __sync_add_and_fetch_8(int64_t volatile* addend, int64_t value) |
-{ |
- return atomicStep(addend, value); |
-} |
- |
-int64_t __sync_sub_and_fetch_8(int64_t volatile* addend, int64_t value) |
-{ |
- return atomicStep(addend, -value); |
-} |
- |
-} // extern "C" |
- |
-} // namespace WTF |
- |
-#endif |