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count_down_latch.h
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef FLUTTER_FML_SYNCHRONIZATION_COUNT_DOWN_LATCH_H_
6 #define FLUTTER_FML_SYNCHRONIZATION_COUNT_DOWN_LATCH_H_
7 
8 #include <atomic>
9 
10 #include "flutter/fml/macros.h"
11 #include "flutter/fml/synchronization/waitable_event.h"
12 
13 namespace fml {
14 
16  public:
17  CountDownLatch(size_t count);
18 
20 
21  void Wait();
22 
23  void CountDown();
24 
25  private:
26  std::atomic_size_t count_;
27  ManualResetWaitableEvent waitable_event_;
28 
29  FML_DISALLOW_COPY_AND_ASSIGN(CountDownLatch);
30 };
31 
32 } // namespace fml
33 
34 #endif // FLUTTER_FML_SYNCHRONIZATION_COUNT_DOWN_LATCH_H_
Definition: ascii_trie.cc:9
CountDownLatch(size_t count)