summaryrefslogtreecommitdiffstats
path: root/base/atomic_flag.h
diff options
context:
space:
mode:
Diffstat (limited to 'base/atomic_flag.h')
-rw-r--r--base/atomic_flag.h37
1 files changed, 0 insertions, 37 deletions
diff --git a/base/atomic_flag.h b/base/atomic_flag.h
deleted file mode 100644
index ee33bf2..0000000
--- a/base/atomic_flag.h
+++ /dev/null
@@ -1,37 +0,0 @@
-// Copyright (c) 2009 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_FLAG_H_
-#define BASE_ATOMIC_FLAG_H_
-
-#include "base/atomicops.h"
-
-namespace base {
-
-// AtomicFlag allows threads to notify each other for a single occurrence
-// of a single event. It maintains an abstract boolean "flag" that transitions
-// to true at most once. It provides calls to query the boolean.
-//
-// Memory ordering: For any threads X and Y, if X calls Set(), then any
-// action taken by X before it calls Set() is visible to thread Y after
-// Y receives a true return value from IsSet().
-class AtomicFlag {
- public:
- // Sets "flag_" to "initial_value".
- explicit AtomicFlag(bool initial_value = false)
- : flag_(initial_value ? 1 : 0) { }
- ~AtomicFlag() {}
-
- void Set(); // Set "flag_" to true. May be called only once.
- bool IsSet() const; // Return "flag_".
-
- private:
- base::subtle::Atomic32 flag_;
-
- DISALLOW_COPY_AND_ASSIGN(AtomicFlag);
-};
-
-} // namespace base
-
-#endif // BASE_ATOMIC_FLAG_H_