/* 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)