mirror of
https://github.com/kidfromjupiter/nearby.git
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Alexey Polyudov
b724d792dd
Signed-off-by: Alexey Polyudov <apolyudov@google.com> Change-Id: I9a7d3c3d9790dc58c0d4c2bd2134499337b9a17b
76 lines
2.1 KiB
C++
76 lines
2.1 KiB
C++
// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef PLATFORM_PUBLIC_CANCELABLE_ALARM_H_
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#define PLATFORM_PUBLIC_CANCELABLE_ALARM_H_
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#include <cstdint>
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#include <functional>
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#include <memory>
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#include <string>
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#include "platform/public/cancelable.h"
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#include "platform/public/mutex.h"
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#include "platform/public/mutex_lock.h"
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#include "platform/public/scheduled_executor.h"
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namespace location {
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namespace nearby {
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/**
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* A cancelable alarm with a name. This is a simple wrapper around the logic
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* for posting a Runnable on a ScheduledExecutor and (possibly) later
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* canceling it.
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*/
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class CancelableAlarm {
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public:
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CancelableAlarm() = default;
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CancelableAlarm(absl::string_view name, std::function<void()>&& runnable,
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absl::Duration delay, ScheduledExecutor* scheduled_executor)
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: name_(name),
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cancelable_(scheduled_executor->Schedule(std::move(runnable), delay)) {}
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~CancelableAlarm() = default;
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CancelableAlarm(CancelableAlarm&& other) {
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*this = std::move(other);
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}
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CancelableAlarm& operator=(CancelableAlarm&& other) {
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MutexLock lock(&mutex_);
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{
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MutexLock other_lock(&other.mutex_);
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name_ = std::move(other.name_);
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cancelable_ = std::move(other.cancelable_);
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}
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return *this;
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}
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bool Cancel() {
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MutexLock lock(&mutex_);
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return cancelable_.Cancel();
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}
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bool IsValid() {
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return cancelable_.IsValid();
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}
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private:
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Mutex mutex_;
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std::string name_;
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Cancelable cancelable_;
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};
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} // namespace nearby
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} // namespace location
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#endif // PLATFORM_PUBLIC_CANCELABLE_ALARM_H_
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