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1 // Copyright 2013 The Chromium 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 #include "cc/resources/single_release_callback.h"
6 
7 #include "base/callback_helpers.h"
8 #include "base/logging.h"
9 
10 namespace cc {
11 
SingleReleaseCallback(const ReleaseCallback & callback)12 SingleReleaseCallback::SingleReleaseCallback(const ReleaseCallback& callback)
13     : has_been_run_(false), callback_(callback) {
14   DCHECK(!callback_.is_null())
15       << "Use a NULL SingleReleaseCallback for an empty callback.";
16 }
17 
~SingleReleaseCallback()18 SingleReleaseCallback::~SingleReleaseCallback() {
19   DCHECK(callback_.is_null() || has_been_run_)
20       << "SingleReleaseCallback was never run.";
21 }
22 
Run(unsigned sync_point,bool is_lost)23 void SingleReleaseCallback::Run(unsigned sync_point, bool is_lost) {
24   DCHECK(!has_been_run_) << "SingleReleaseCallback was run more than once.";
25   has_been_run_ = true;
26   callback_.Run(sync_point, is_lost);
27 }
28 
29 }  // namespace cc
30