/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright (C) 2019, Google Inc. * * signal-threads.cpp - Cross-thread signal delivery test */ #include #include #include #include #include #include #include "test.h" using namespace std; using namespace libcamera; class SignalReceiver : public Object { public: enum Status { NoSignal, InvalidThread, SignalReceived, }; SignalReceiver() : status_(NoSignal) { } Status status() const { return status_; } int value() const { return value_; } void reset() { status_ = NoSignal; value_ = 0; } void slot(int value) { if (Thread::current() != thread()) status_ = InvalidThread; else status_ = SignalReceived; value_ = value; } private: Status status_; int value_; }; class SignalThreadsTest : public Test { protected: int run() { SignalReceiver receiver; signal_.connect(&receiver, &SignalReceiver::slot); /* Test that a signal is received in the main thread. */ signal_.emit(0); switch (receiver.status()) { case SignalReceiver::NoSignal: cout << "No signal received for direct connection" << endl; return TestFail; case SignalReceiver::InvalidThread: cout << "Signal received in incorrect thread " "for direct connection" << endl; return TestFail; default: break; } /* * Move the object to a thread and verify that the signal is * correctly delivered, with the correct data. */ receiver.reset(); receiver.moveToThread(&thread_); thread_.start(); signal_.emit(42); this_thread::sleep_for(chrono::milliseconds(100)); switch (receiver.status()) { case SignalReceiver::NoSignal: cout << "No signal received for message connection" << endl; return TestFail; case SignalReceiver::InvalidThread: cout << "Signal received in incorrect thread " "for message connection" << endl; return TestFail; default: break; } if (receiver.value() != 42) { cout << "Signal received with incorrect value" << endl; return TestFail; } return TestPass; } void cleanup() { thread_.exit(0); thread_.wait(); } private: Thread thread_; Signal signal_; }; TEST_REGISTER(SignalThreadsTest) 'form'>

path: root/test/event-dispatcher.cpp

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