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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* timer.cpp - Timer test
*/
#include <chrono>
#include <iostream>
#include <libcamera/event_dispatcher.h>
#include <libcamera/timer.h>
#include "libcamera/internal/thread.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)
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