mirror of
https://gitee.com/acl-dev/acl.git
synced 2024-12-14 08:50:53 +08:00
74 lines
2.9 KiB
C++
74 lines
2.9 KiB
C++
// Protocol Buffers - Google's data interchange format
|
|
// Copyright 2012 Google Inc. All rights reserved.
|
|
// http://code.google.com/p/protobuf/
|
|
//
|
|
// 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.
|
|
|
|
// This file is an internal atomic implementation, use atomicops.h instead.
|
|
|
|
#ifndef GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_PNACL_H_
|
|
#define GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_PNACL_H_
|
|
|
|
namespace google {
|
|
namespace protobuf {
|
|
namespace internal {
|
|
|
|
inline Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr,
|
|
Atomic32 old_value,
|
|
Atomic32 new_value) {
|
|
return __sync_val_compare_and_swap(ptr, old_value, new_value);
|
|
}
|
|
|
|
inline void MemoryBarrier() {
|
|
__sync_synchronize();
|
|
}
|
|
|
|
inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
|
|
Atomic32 old_value,
|
|
Atomic32 new_value) {
|
|
Atomic32 ret = NoBarrier_CompareAndSwap(ptr, old_value, new_value);
|
|
MemoryBarrier();
|
|
return ret;
|
|
}
|
|
|
|
inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
|
|
MemoryBarrier();
|
|
*ptr = value;
|
|
}
|
|
|
|
inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
|
|
Atomic32 value = *ptr;
|
|
MemoryBarrier();
|
|
return value;
|
|
}
|
|
|
|
} // namespace internal
|
|
} // namespace protobuf
|
|
} // namespace google
|
|
|
|
#endif // GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_PNACL_H_
|