| // Copyright 2015 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. |
| |
| #include "components/scheduler/renderer/deadline_task_runner.h" |
| |
| #include "base/bind.h" |
| |
| namespace scheduler { |
| |
| DeadlineTaskRunner::DeadlineTaskRunner( |
| const base::Closure& callback, |
| scoped_refptr<base::SingleThreadTaskRunner> task_runner) |
| : callback_(callback), task_runner_(task_runner) { |
| cancelable_run_internal_.Reset( |
| base::Bind(&DeadlineTaskRunner::RunInternal, base::Unretained(this))); |
| } |
| |
| DeadlineTaskRunner::~DeadlineTaskRunner() { |
| } |
| |
| void DeadlineTaskRunner::SetDeadline(const tracked_objects::Location& from_here, |
| base::TimeDelta delay, |
| base::TimeTicks now) { |
| DCHECK(delay > base::TimeDelta()); |
| base::TimeTicks deadline = now + delay; |
| if (deadline_.is_null() || deadline < deadline_) { |
| deadline_ = deadline; |
| cancelable_run_internal_.Cancel(); |
| task_runner_->PostDelayedTask(from_here, |
| cancelable_run_internal_.callback(), delay); |
| } |
| } |
| |
| void DeadlineTaskRunner::RunInternal() { |
| deadline_ = base::TimeTicks(); |
| callback_.Run(); |
| } |
| |
| } // namespace scheduler |