Index: third_party/tcmalloc/chromium/src/base/atomicops-internals-arm-gcc.h |
diff --git a/third_party/tcmalloc/chromium/src/base/atomicops-internals-arm-gcc.h b/third_party/tcmalloc/chromium/src/base/atomicops-internals-arm-gcc.h |
deleted file mode 100644 |
index 423e993c4c8922228dcb7ca632c39fa93969d96d..0000000000000000000000000000000000000000 |
--- a/third_party/tcmalloc/chromium/src/base/atomicops-internals-arm-gcc.h |
+++ /dev/null |
@@ -1,234 +0,0 @@ |
-/* Copyright (c) 2010, Google 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: |
- * |
- * * Redistributions of source code must retain the above copyright |
- * notice, this list of conditions and the following disclaimer. |
- * * 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. |
- * * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT |
- * OWNER OR 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. |
- * |
- * --- |
- * Author: Lei Zhang, Sasha Levitskiy |
- */ |
- |
-// This file is an internal atomic implementation, use base/atomicops.h instead. |
-// |
-// LinuxKernelCmpxchg and Barrier_AtomicIncrement are from Google Gears. |
- |
-#ifndef BASE_ATOMICOPS_INTERNALS_ARM_GCC_H_ |
-#define BASE_ATOMICOPS_INTERNALS_ARM_GCC_H_ |
- |
-#include <stdio.h> |
-#include "base/basictypes.h" // For COMPILE_ASSERT |
- |
-typedef int32_t Atomic32; |
- |
-namespace base { |
-namespace subtle { |
- |
-typedef int64_t Atomic64; |
- |
-// 0xffff0fc0 is the hard coded address of a function provided by |
-// the kernel which implements an atomic compare-exchange. On older |
-// ARM architecture revisions (pre-v6) this may be implemented using |
-// a syscall. This address is stable, and in active use (hard coded) |
-// by at least glibc-2.7 and the Android C library. |
-// pLinuxKernelCmpxchg has both acquire and release barrier sematincs. |
-typedef Atomic32 (*LinuxKernelCmpxchgFunc)(Atomic32 old_value, |
- Atomic32 new_value, |
- volatile Atomic32* ptr); |
-LinuxKernelCmpxchgFunc pLinuxKernelCmpxchg __attribute__((weak)) = |
- (LinuxKernelCmpxchgFunc) 0xffff0fc0; |
- |
-typedef void (*LinuxKernelMemoryBarrierFunc)(void); |
-LinuxKernelMemoryBarrierFunc pLinuxKernelMemoryBarrier __attribute__((weak)) = |
- (LinuxKernelMemoryBarrierFunc) 0xffff0fa0; |
- |
- |
-inline Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr, |
- Atomic32 old_value, |
- Atomic32 new_value) { |
- Atomic32 prev_value = *ptr; |
- do { |
- if (!pLinuxKernelCmpxchg(old_value, new_value, |
- const_cast<Atomic32*>(ptr))) { |
- return old_value; |
- } |
- prev_value = *ptr; |
- } while (prev_value == old_value); |
- return prev_value; |
-} |
- |
-inline Atomic32 NoBarrier_AtomicExchange(volatile Atomic32* ptr, |
- Atomic32 new_value) { |
- Atomic32 old_value; |
- do { |
- old_value = *ptr; |
- } while (pLinuxKernelCmpxchg(old_value, new_value, |
- const_cast<Atomic32*>(ptr))); |
- return old_value; |
-} |
- |
-inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr, |
- Atomic32 increment) { |
- for (;;) { |
- // Atomic exchange the old value with an incremented one. |
- Atomic32 old_value = *ptr; |
- Atomic32 new_value = old_value + increment; |
- if (pLinuxKernelCmpxchg(old_value, new_value, |
- const_cast<Atomic32*>(ptr)) == 0) { |
- // The exchange took place as expected. |
- return new_value; |
- } |
- // Otherwise, *ptr changed mid-loop and we need to retry. |
- } |
-} |
- |
-inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32* ptr, |
- Atomic32 increment) { |
- return Barrier_AtomicIncrement(ptr, increment); |
-} |
- |
-inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr, |
- Atomic32 old_value, |
- Atomic32 new_value) { |
- return NoBarrier_CompareAndSwap(ptr, old_value, new_value); |
-} |
- |
-inline Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr, |
- Atomic32 old_value, |
- Atomic32 new_value) { |
- return NoBarrier_CompareAndSwap(ptr, old_value, new_value); |
-} |
- |
-inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) { |
- *ptr = value; |
-} |
- |
-inline void MemoryBarrier() { |
- pLinuxKernelMemoryBarrier(); |
-} |
- |
-inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) { |
- *ptr = value; |
- MemoryBarrier(); |
-} |
- |
-inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) { |
- MemoryBarrier(); |
- *ptr = value; |
-} |
- |
-inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) { |
- return *ptr; |
-} |
- |
-inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) { |
- Atomic32 value = *ptr; |
- MemoryBarrier(); |
- return value; |
-} |
- |
-inline Atomic32 Release_Load(volatile const Atomic32* ptr) { |
- MemoryBarrier(); |
- return *ptr; |
-} |
- |
- |
-// 64-bit versions are not implemented yet. |
- |
-inline void NotImplementedFatalError(const char *function_name) { |
- fprintf(stderr, "64-bit %s() not implemented on this platform\n", |
- function_name); |
- abort(); |
-} |
- |
-inline Atomic64 NoBarrier_CompareAndSwap(volatile Atomic64* ptr, |
- Atomic64 old_value, |
- Atomic64 new_value) { |
- NotImplementedFatalError("NoBarrier_CompareAndSwap"); |
- return 0; |
-} |
- |
-inline Atomic64 NoBarrier_AtomicExchange(volatile Atomic64* ptr, |
- Atomic64 new_value) { |
- NotImplementedFatalError("NoBarrier_AtomicExchange"); |
- return 0; |
-} |
- |
-inline Atomic64 NoBarrier_AtomicIncrement(volatile Atomic64* ptr, |
- Atomic64 increment) { |
- NotImplementedFatalError("NoBarrier_AtomicIncrement"); |
- return 0; |
-} |
- |
-inline Atomic64 Barrier_AtomicIncrement(volatile Atomic64* ptr, |
- Atomic64 increment) { |
- NotImplementedFatalError("Barrier_AtomicIncrement"); |
- return 0; |
-} |
- |
-inline void NoBarrier_Store(volatile Atomic64* ptr, Atomic64 value) { |
- NotImplementedFatalError("NoBarrier_Store"); |
-} |
- |
-inline void Acquire_Store(volatile Atomic64* ptr, Atomic64 value) { |
- NoBarrier_AtomicExchange(ptr, value); |
- // acts as a barrier in this implementation |
-} |
- |
-inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) { |
- NotImplementedFatalError("Release_Store"); |
-} |
- |
-inline Atomic64 NoBarrier_Load(volatile const Atomic64* ptr) { |
- NotImplementedFatalError("NoBarrier_Load"); |
- return 0; |
-} |
- |
-inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) { |
- Atomic64 value = NoBarrier_Load(ptr); |
- return value; |
-} |
- |
-inline Atomic64 Release_Load(volatile const Atomic64* ptr) { |
- MemoryBarrier(); |
- return NoBarrier_Load(ptr); |
-} |
- |
-inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr, |
- Atomic64 old_value, |
- Atomic64 new_value) { |
- return NoBarrier_CompareAndSwap(ptr, old_value, new_value); |
-} |
- |
-inline Atomic64 Release_CompareAndSwap(volatile Atomic64* ptr, |
- Atomic64 old_value, |
- Atomic64 new_value) { |
- return NoBarrier_CompareAndSwap(ptr, old_value, new_value); |
-} |
- |
-} // namespace base::subtle |
-} // namespace base |
- |
-#endif // BASE_ATOMICOPS_INTERNALS_ARM_GCC_H_ |