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/*
* Copyright 2013 Canonical Ltd.
*
* Authors:
* Charles Kerr <charles.kerr@canonical.com>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3, as published
* by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <condition_variable>
#include <mutex>
#include <queue>
#include <thread>
#include <langinfo.h>
#include <locale.h>
#include <glib/gi18n.h>
#include <core/connection.h>
#include <core/signal.h>
#include <core/property.h>
#include "glib-fixture.h"
/***
****
***/
class CoreFixture: public GlibFixture
{
private:
typedef GlibFixture super;
protected:
virtual void SetUp ()
{
super::SetUp ();
}
virtual void TearDown ()
{
super::TearDown ();
}
};
namespace
{
struct EventLoop
{
typedef std::function<void()> Handler;
void stop()
{
stop_requested = true;
}
void run()
{
while (!stop_requested)
{
std::unique_lock<std::mutex> ul(guard);
wait_condition.wait_for(
ul,
std::chrono::milliseconds{500},
[this]() { return handlers.size() > 0; });
std::cerr << "handlers.size() is " << handlers.size() << std::endl;
while (handlers.size() > 0)
{
std::cerr << "gaba begin" << std::endl;
handlers.front()();
std::cerr << "gaba end" << std::endl;
handlers.pop();
}
}
}
void dispatch(const Handler& h)
{
std::cerr << "in dispatch" << std::endl;
std::lock_guard<std::mutex> lg(guard);
handlers.push(h);
}
bool stop_requested = false;
std::queue<Handler> handlers;
std::mutex guard;
std::condition_variable wait_condition;
};
}
TEST_F (CoreFixture, HelloWorld)
{
// We instantiate an event loop and run it on a different thread than the main one.
EventLoop dispatcher;
std::thread dispatcher_thread{[&dispatcher]() { dispatcher.run(); }};
std::thread::id dispatcher_thread_id = dispatcher_thread.get_id();
// The signal that we want to dispatch via the event loop.
core::Signal<int, double> s;
static const int expected_invocation_count = 10000;
// Setup the connection. For each invocation we check that the id of the
// thread the handler is being called upon equals the thread that the
// event loop is running upon.
auto connection = s.connect(
[&dispatcher, dispatcher_thread_id](int value, double d)
{
std::cerr << "this is the lambda" << std::endl;
EXPECT_EQ(dispatcher_thread_id,
std::this_thread::get_id());
std::cout << d << std::endl;
if (value == expected_invocation_count)
dispatcher.stop();
});
// Route the connection via the dispatcher
connection.dispatch_via(
std::bind(
&EventLoop::dispatch,
std::ref(dispatcher),
std::placeholders::_1));
// Invoke the signal from the main thread.
for (unsigned int i = 1; i <= expected_invocation_count; i++)
s(i, 42.);
if (dispatcher_thread.joinable())
dispatcher_thread.join();
}
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