/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright (C) 2019, Google Inc. * * timer.cpp - Timer test */ #include <iostream> #include <libcamera/camera_manager.h> #include <libcamera/event_dispatcher.h> #include <libcamera/timer.h> #include "test.h" using namespace std; using namespace libcamera; class ManagedTimer : public Timer { public: ManagedTimer() : Timer(), interval_(0) { timeout.connect(this, &ManagedTimer::timeoutHandler); } void start(int msec) { interval_ = msec; clock_gettime(CLOCK_MONOTONIC, &start_); expiration_ = { 0, 0 }; Timer::start(msec); } int jitter() { int duration = (expiration_.tv_sec - start_.tv_sec) * 1000; duration += (expiration_.tv_nsec - start_.tv_nsec) / 1000000; return abs(duration - interval_); } private: void timeoutHandler(Timer *timer) { clock_gettime(CLOCK_MONOTONIC, &expiration_); } int interval_; struct timespec start_; struct timespec expiration_; }; class TimerTest : public Test { protected: int init() { return 0; } int run() { EventDispatcher *dispatcher = CameraManager::instance()->eventDispatcher(); ManagedTimer timer; ManagedTimer timer2; /* Timer expiration. */ timer.start(1000); if (!timer.isRunning()) { cout << "Timer expiration test failed" << endl; return TestFail; } dispatcher->processEvents(); if (timer.isRunning() || timer.jitter() > 50) { cout << "Timer expiration test failed" << endl; return TestFail; } /* * 32 bit wrap test * Nanosecond resolution in a 32 bit value wraps at 4.294967 * seconds (0xFFFFFFFF / 1000000) */ timer.start(4295); dispatcher->processEvents(); if (timer.isRunning() || timer.jitter() > 50) { cout << "Timer expiration test failed" << endl; return TestFail; } /* Timer restart. */ timer.start(500); if (!timer.isRunning()) { cout << "Timer restart test failed" << endl; return TestFail; } dispatcher->processEvents(); if (timer.isRunning() || timer.jitter() > 50) { cout << "Timer restart test failed" << endl; return TestFail; } /* Two timers. */ timer.start(1000); timer2.start(300); dispatcher->processEvents(); if (!timer.isRunning()) { cout << "Two timers test failed" << endl; return TestFail; } if (timer2.jitter() > 50) { cout << "Two timers test failed" << endl; return TestFail; } dispatcher->processEvents(); if (timer.jitter() > 50) { cout << "Two timers test failed" << endl; return TestFail; } /* Restart timer before expiration. */ timer.start(1000); timer2.start(300); dispatcher->processEvents(); if (timer2.jitter() > 50) { cout << "Two timers test failed" << endl; return TestFail; } timer.start(1000); dispatcher->processEvents(); if (timer.jitter() > 50) { cout << "Two timers test failed" << endl; return TestFail; } return TestPass; } void cleanup() { } }; TEST_REGISTER(TimerTest)