mirror of
https://github.com/Evolution-X/hardware_interfaces
synced 2026-02-01 16:50:18 +00:00
d7483327cb
Due to RadioTuner API documentation, onTuneFailed should be called when a pending tuning operation is canceled. Therefore, a new result value Canceled was added in broadcast radio HAL. The onTuneFailed callback for pending tuning operations in default HAL was implemented by adding whatIfCanceled function field in Task struct in WorkerThread utils class. Bug: 257337458 Test: atest RadioTunerTest#cancel_whenTune Test: atest RadioTunerTest#cancel_whenSeek Change-Id: I901ab2cc3561082e5f11a9f6c33db044fc9bc28b
92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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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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* http://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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*/
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#include <broadcastradio-utils/WorkerThread.h>
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namespace android {
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using std::function;
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using std::lock_guard;
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using std::mutex;
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using std::unique_lock;
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using std::chrono::milliseconds;
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using std::chrono::steady_clock;
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using std::this_thread::sleep_for;
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bool operator<(const WorkerThread::Task& lhs, const WorkerThread::Task& rhs) {
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return lhs.when > rhs.when;
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}
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WorkerThread::WorkerThread() : mIsTerminating(false) {
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// putting mThread in constructor instead of initializer list
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// to ensure all class members are init before mThread starts
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mThread = std::thread(&WorkerThread::threadLoop, this);
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}
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WorkerThread::~WorkerThread() {
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{
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lock_guard<mutex> lk(mMut);
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mIsTerminating = true;
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mCond.notify_one();
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}
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mThread.join();
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}
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void WorkerThread::schedule(function<void()> task, milliseconds delay) {
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auto cancelTask = []() {};
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schedule(std::move(task), cancelTask, delay);
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}
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void WorkerThread::schedule(function<void()> task, function<void()> cancelTask,
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milliseconds delay) {
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auto when = steady_clock::now() + delay;
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lock_guard<mutex> lk(mMut);
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mTasks.push(Task({when, std::move(task), std::move(cancelTask)}));
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mCond.notify_one();
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}
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void WorkerThread::cancelAll() {
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lock_guard<mutex> lk(mMut);
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while (!mTasks.empty()) {
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auto task = mTasks.top();
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task.onCanceled();
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mTasks.pop();
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}
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}
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void WorkerThread::threadLoop() {
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while (!mIsTerminating) {
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unique_lock<mutex> lk(mMut);
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if (mTasks.empty()) {
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mCond.wait(lk);
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continue;
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}
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auto task = mTasks.top();
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if (task.when > steady_clock::now()) {
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mCond.wait_until(lk, task.when);
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continue;
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}
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mTasks.pop();
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lk.unlock(); // what() might need to schedule another task
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task.what();
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}
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}
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} // namespace android
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