/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright (C) 2019, Google Inc. * * timer.cpp - Timer test */ #include <chrono> #include <iostream> #include "libcamera/internal/event_dispatcher.h" #include "libcamera/internal/thread.h" #include "libcamera/internal/timer.h" #include "test.h" using namespace std; using namespace libcamera; class ManagedTimer : public Timer { public: ManagedTimer() : Timer(), count_(0) { timeout.connect(this, &ManagedTimer::timeoutHandler); } void start(int msec) { count_ = 0; start_ = std::chrono::steady_clock::now(); expiration_ = std::chrono::steady_clock::time_point(); Timer::start(msec); } void start(std::chrono::steady_clock::time_point deadline) { count_ = 0; start_ = std::chrono::steady_clock::now(); expiration_ = std::chrono::steady_clock::time_point(); Timer::start(deadline); } int jitter() { std::chrono::steady_clock::duration duration = expiration_ - deadline(); return abs(std::chrono::duration_cast<std::chrono::milliseconds>(duration).count()); } bool hasFailed() { return isRunning() || count_ != 1 || jitter() > 50; } private: void timeoutHandler([[maybe_unused]] Timer *timer) { expiration_ = std::chrono::steady_clock::now(); count_++; } unsigned int count_; std::chrono::steady_clock::time_point start_; std::chrono::steady_clock::time_point expiration_; }; class TimerTest : public Test { protected: int init() { return 0; } int run() { EventDispatcher *dispatcher = Thread::current()->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.hasFailed()) { 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.hasFailed()) { 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.hasFailed()) { cout << "Timer restart test failed" << endl; return TestFail; } /* Timer restart before expiration. */ timer.start(50); timer.start(100); timer.start(150); dispatcher->processEvents(); if (timer.hasFailed()) { cout << "Timer restart before expiration test failed" << endl; return TestFail; } /* Timer with absolute deadline. */ timer.start(std::chrono::steady_clock::now() + std::chrono::milliseconds(200)); dispatcher->processEvents(); if (timer.hasFailed()) { cout << "Absolute deadline 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; } /* * Test that dynamically allocated timers are stopped when * deleted. This will result in a crash on failure. */ ManagedTimer *dyntimer = new ManagedTimer(); dyntimer->start(100); delete dyntimer; timer.start(200); dispatcher->processEvents(); return TestPass; } void cleanup() { } }; TEST_REGISTER(TimerTest)