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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* event-thread.cpp - Threaded event test
*/
#include <chrono>
#include <iostream>
#include <string.h>
#include <unistd.h>
#include <libcamera/base/event_notifier.h>
#include <libcamera/base/thread.h>
#include <libcamera/base/timer.h>
#include "test.h"
using namespace std;
using namespace libcamera;
class EventHandler : public Object
{
public:
EventHandler()
: notified_(false)
{
int ret = pipe(pipefd_);
if (ret < 0) {
ret = errno;
cout << "pipe() failed: " << strerror(ret) << endl;
}
notifier_ = new EventNotifier(pipefd_[0], EventNotifier::Read, this);
notifier_->activated.connect(this, &EventHandler::readReady);
}
~EventHandler()
{
delete notifier_;
close(pipefd_[0]);
close(pipefd_[1]);
}
int notify()
{
std::string data("H2G2");
ssize_t ret;
memset(data_, 0, sizeof(data_));
size_ = 0;
ret = write(pipefd_[1], data.data(), data.size());
if (ret < 0) {
cout << "Pipe write failed" << endl;
return TestFail;
}
return TestPass;
}
bool notified() const
{
return notified_;
}
private:
void readReady()
{
size_ = read(notifier_->fd(), data_, sizeof(data_));
notified_ = true;
}
EventNotifier *notifier_;
int pipefd_[2];
bool notified_;
char data_[16];
ssize_t size_;
};
class EventThreadTest : public Test
{
protected:
int run()
{
Thread thread;
thread.start();
/*
* Fire the event notifier and then move the notifier to a
* different thread. The notifier will not notice the event
* immediately as there is no event dispatcher loop running in
* the main thread. This tests that a notifier being moved to a
* different thread will correctly process already pending
* events in the new thread.
*/
EventHandler handler;
handler.notify();
handler.moveToThread(&thread);
this_thread::sleep_for(chrono::milliseconds(100));
/* Must stop thread before destroying the handler. */
thread.exit(0);
thread.wait();
if (!handler.notified()) {
cout << "Thread event handling test failed" << endl;
return TestFail;
}
return TestPass;
}
};
TEST_REGISTER(EventThreadTest)
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