Ryan Macnak
65d7bf8152
Change-Id: I2bbe637fce59bd5d84f7db8a44960e36fe63d2d9 Reviewed-on: https://dart-review.googlesource.com/53822 Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Alexander Markov <alexmarkov@google.com>
64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_PLATFORM_ATOMIC_LINUX_H_
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#define RUNTIME_PLATFORM_ATOMIC_LINUX_H_
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#if !defined RUNTIME_PLATFORM_ATOMIC_H_
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#error Do not include atomic_linux.h directly. Use atomic.h instead.
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#endif
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#if !defined(HOST_OS_LINUX)
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#error This file should only be included on Linux builds.
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#endif
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namespace dart {
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inline uintptr_t AtomicOperations::FetchAndIncrement(uintptr_t* p) {
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return __sync_fetch_and_add(p, 1);
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}
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inline intptr_t AtomicOperations::FetchAndIncrement(intptr_t* p) {
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return __sync_fetch_and_add(p, 1);
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}
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inline void AtomicOperations::IncrementBy(intptr_t* p, intptr_t value) {
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__sync_fetch_and_add(p, value);
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}
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inline void AtomicOperations::IncrementInt64By(int64_t* p, int64_t value) {
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// Some ARM implementations require 8-byte alignment for atomic access but
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// not non-atomic access.
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ASSERT((reinterpret_cast<uword>(p) % 8) == 0);
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__sync_fetch_and_add(p, value);
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}
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inline uintptr_t AtomicOperations::FetchAndDecrement(uintptr_t* p) {
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return __sync_fetch_and_sub(p, 1);
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}
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inline intptr_t AtomicOperations::FetchAndDecrement(intptr_t* p) {
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return __sync_fetch_and_sub(p, 1);
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}
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inline void AtomicOperations::DecrementBy(intptr_t* p, intptr_t value) {
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__sync_fetch_and_sub(p, value);
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}
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inline uword AtomicOperations::CompareAndSwapWord(uword* ptr,
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uword old_value,
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uword new_value) {
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return __sync_val_compare_and_swap(ptr, old_value, new_value);
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}
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inline uint32_t AtomicOperations::CompareAndSwapUint32(uint32_t* ptr,
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uint32_t old_value,
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uint32_t new_value) {
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return __sync_val_compare_and_swap(ptr, old_value, new_value);
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}
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} // namespace dart
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#endif // RUNTIME_PLATFORM_ATOMIC_LINUX_H_
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