/* * Copyright (C) 2017 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "SensorDeviceUtils.h" #include <android/hardware/sensors/1.0/ISensors.h> #include <utils/Log.h> #include <chrono> #include <thread> using ::android::hardware::Void; using namespace android::hardware::sensors::V1_0; namespace android { namespace SensorDeviceUtils { HidlServiceRegistrationWaiter::HidlServiceRegistrationWaiter() { } void HidlServiceRegistrationWaiter::onFirstRef() { // Creating sp<...>(this) in the constructor should be avoided, hence // registerForNotifications is called in onFirstRef callback. mRegistered = ISensors::registerForNotifications("default", this); } Return<void> HidlServiceRegistrationWaiter::onRegistration( const hidl_string &fqName, const hidl_string &name, bool preexisting) { ALOGV("onRegistration fqName %s, name %s, preexisting %d", fqName.c_str(), name.c_str(), preexisting); { std::lock_guard<std::mutex> lk(mLock); mRestartObserved = true; } mCondition.notify_all(); return Void(); } void HidlServiceRegistrationWaiter::reset() { std::lock_guard<std::mutex> lk(mLock); mRestartObserved = false; } bool HidlServiceRegistrationWaiter::wait() { constexpr int DEFAULT_WAIT_MS = 100; constexpr int TIMEOUT_MS = 1000; if (!mRegistered) { ALOGW("Cannot register service notification, use default wait(%d ms)", DEFAULT_WAIT_MS); std::this_thread::sleep_for(std::chrono::milliseconds(DEFAULT_WAIT_MS)); // not sure if service is actually restarted return false; } std::unique_lock<std::mutex> lk(mLock); return mCondition.wait_for(lk, std::chrono::milliseconds(TIMEOUT_MS), [this]{return mRestartObserved;}); } } // namespace SensorDeviceUtils } // namespace android