cc/resources/single_release_callback_impl.cc

   1 // Copyright 2014 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_impl.h"
   6
   7 #include "base/callback_helpers.h"
   8 #include "base/logging.h"
   9 #include "cc/trees/blocking_task_runner.h"
  10
  11 namespace cc {
  12
  13 SingleReleaseCallbackImpl::SingleReleaseCallbackImpl(
  14     const ReleaseCallbackImpl& callback)
  15     : callback_(callback) {
  16   DCHECK(!callback_.is_null())
  17       << "Use a NULL SingleReleaseCallbackImpl for an empty callback.";
  18 }
  19
  20 SingleReleaseCallbackImpl::~SingleReleaseCallbackImpl() {
  21   DCHECK(callback_.is_null()) << "SingleReleaseCallbackImpl was never run.";
  22 }
  23
  24 void SingleReleaseCallbackImpl::Run(
  25     uint32 sync_point,
  26     bool is_lost,
  27     BlockingTaskRunner* main_thread_task_runner) {
  28   DCHECK(!callback_.is_null())
  29       << "SingleReleaseCallbackImpl was run more than once.";
  30   base::ResetAndReturn(&callback_)
  31       .Run(sync_point, is_lost, main_thread_task_runner);
  32 }
  33
  34 }  // namespace cc