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author | Jinkun Jang <jinkun.jang@samsung.com> | 2013-03-13 01:41:38 +0900 |
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committer | Jinkun Jang <jinkun.jang@samsung.com> | 2013-03-13 01:41:38 +0900 |
commit | 8a6ea078957a71e285dcf1db46aa1e5d26dfcb3f (patch) | |
tree | ebbbe8a8120031a0a1340161064b1e1a2b2bc2ef /base/atomic_sequence_num.h | |
parent | f0b7f23011002ef4a1e455be07c6b298cb5cef94 (diff) | |
download | chromium-8a6ea078957a71e285dcf1db46aa1e5d26dfcb3f.tar.gz chromium-8a6ea078957a71e285dcf1db46aa1e5d26dfcb3f.tar.bz2 chromium-8a6ea078957a71e285dcf1db46aa1e5d26dfcb3f.zip |
Tizen 2.1 base
Diffstat (limited to 'base/atomic_sequence_num.h')
-rw-r--r-- | base/atomic_sequence_num.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/base/atomic_sequence_num.h b/base/atomic_sequence_num.h new file mode 100644 index 000000000000..11805a0ae501 --- /dev/null +++ b/base/atomic_sequence_num.h @@ -0,0 +1,31 @@ +// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef BASE_ATOMIC_SEQUENCE_NUM_H_ +#define BASE_ATOMIC_SEQUENCE_NUM_H_ +#pragma once + +#include "base/atomicops.h" +#include "base/basictypes.h" + +namespace base { + +class AtomicSequenceNumber { + public: + AtomicSequenceNumber() : seq_(0) { } + explicit AtomicSequenceNumber(base::LinkerInitialized x) { /* seq_ is 0 */ } + + int GetNext() { + return static_cast<int>( + base::subtle::NoBarrier_AtomicIncrement(&seq_, 1) - 1); + } + + private: + base::subtle::Atomic32 seq_; + DISALLOW_COPY_AND_ASSIGN(AtomicSequenceNumber); +}; + +} // namespace base + +#endif // BASE_ATOMIC_SEQUENCE_NUM_H_ |