From a1b1551446f26e942f7784406c6ea824b3914a53 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 10 Jul 2019 19:59:13 +0300 Subject: test: Add test case for signal delivery across threads MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The test case creates a receiver inheriting from Object, connects a signal to one of its slot, moves the receiver to a different thread, emits the signal and verifies that it gets delivered in the correct thread with the expected value. Signed-off-by: Laurent Pinchart Reviewed-by: Niklas Söderlund --- test/meson.build | 1 + test/signal-threads.cpp | 125 ++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 126 insertions(+) create mode 100644 test/signal-threads.cpp diff --git a/test/meson.build b/test/meson.build index 1f87319a..60ce9601 100644 --- a/test/meson.build +++ b/test/meson.build @@ -22,6 +22,7 @@ public_tests = [ internal_tests = [ ['camera-sensor', 'camera-sensor.cpp'], ['message', 'message.cpp'], + ['signal-threads', 'signal-threads.cpp'], ['threads', 'threads.cpp'], ] diff --git a/test/signal-threads.cpp b/test/signal-threads.cpp new file mode 100644 index 00000000..f77733eb --- /dev/null +++ b/test/signal-threads.cpp @@ -0,0 +1,125 @@ +/* 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 "message.h" +#include "thread.h" +#include "test.h" +#include "utils.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) -- cgit v1.2.1