mirror of
https://github.com/kidfromjupiter/nearby.git
synced 2026-09-15 15:16:12 -04:00
Timothy Hutchins
000c86425c
The Windows implementation of the Timer class (in timer.h) used Timer Queues. This brings in implementation for a mostly Windows complient TimerQueue class to work with the Timer class.
121 lines
3.2 KiB
C++
121 lines
3.2 KiB
C++
// Copyright 2021 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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#include "internal/platform/implementation/linux/timer.h"
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#include "internal/platform/implementation/linux/timer_queue.h"
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#include "absl/synchronization/mutex.h"
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#include "internal/platform/logging.h"
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namespace nearby {
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namespace linux {
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Timer::~Timer() { Stop(); }
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bool Timer::Create(int delay, int interval,
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absl::AnyInvocable<void()> callback) {
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absl::MutexLock lock(&mutex_);
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if ((delay < 0) || (interval < 0)) {
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NEARBY_LOGS(WARNING) << "Delay and interval shouldn\'t be negative value.";
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return false;
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}
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if (timer_queue_handle_) {
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return false;
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}
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timer_queue_handle_ = TimerQueue::CreateTimerQueue();
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if (!timer_queue_handle_) {
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NEARBY_LOGS(ERROR) << "Failed to create timer queue.";
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return false;
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}
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delay_ = delay;
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interval_ = interval;
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callback_ = std::move(callback);
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absl::StatusOr<uint16_t> createStatus = timer_queue_handle_->CreateTimerQueueTimer(TimerRoutine,
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&callback_, std::chrono::milliseconds(delay), std::chrono::milliseconds(interval), TimerQueue::WT_EXECUTEDEFAULT);
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if (!createStatus.ok()) {
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if (!timer_queue_handle_->DeleteTimerQueueEx(TimerQueue::CE_IMEDIATERETURN).ok()) {
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NEARBY_LOGS(ERROR) << "Failed to create timer in timer queue.";
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}
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delete timer_queue_handle_.release();
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return false;
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}
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handle_ = createStatus.value();
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return true;
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}
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bool Timer::Stop() {
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absl::MutexLock lock(&mutex_);
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if (!timer_queue_handle_) {
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return true;
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}
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absl::Status deleteStatus = timer_queue_handle_->DeleteTimerQueueTimer(handle_, TimerQueue::CE_IMEDIATERETURN);
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if (!deleteStatus.ok()) {
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NEARBY_LOGS(ERROR) << "Failed to delete timer from queue: " << deleteStatus.message();
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}
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handle_ = 0;
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deleteStatus = timer_queue_handle_->DeleteTimerQueueEx(TimerQueue::CE_IMEDIATERETURN);
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if (!deleteStatus.ok()) {
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NEARBY_LOGS(ERROR) << "Failed to delete timer queue: " << deleteStatus.message();
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return false;
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}
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timer_queue_handle_ = nullptr;
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return true;
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}
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bool Timer::FireNow() {
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absl::MutexLock lock(&mutex_);
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if (!timer_queue_handle_ || !callback_) {
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return false;
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}
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if (task_executor_ == nullptr) {
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task_executor_ = std::make_unique<SubmittableExecutor>();
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}
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if (task_executor_ == nullptr) {
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NEARBY_LOGS(ERROR)
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<< "Failed to fire the task due to cannot create executor.";
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return false;
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}
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task_executor_->Execute([&]() { callback_(); });
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return true;
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}
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void Timer::TimerRoutine(void *lpParam) {
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absl::AnyInvocable<void()>* callback =
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reinterpret_cast<absl::AnyInvocable<void()>*>(lpParam);
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if (*callback != nullptr) {
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(*callback)();
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}
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}
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} // namespace linux
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} // namespace nearby
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