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/*
* Copyright © 2014 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser 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 warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by: Thomas Voß <thomas.voss@canonical.com>
*/
#include <core/dbus/fixture.h>
#include <core/dbus/macros.h>
#include <core/dbus/object.h>
#include <core/dbus/service.h>
#include <core/dbus/asio/executor.h>
#include <core/dbus/types/stl/string.h>
#include <core/dbus/types/stl/vector.h>
#include <core/testing/fork_and_run.h>
#include <gmock/gmock.h>
#include "test_data.h"
namespace
{
// Our fixture for starting up private system- and session-bus instances.
struct AsyncExecutionLoadTest : public core::dbus::testing::Fixture
{
};
auto session_bus_config_file =
core::dbus::testing::Fixture::default_session_bus_config_file() =
core::testing::session_bus_configuration_file();
auto system_bus_config_file =
core::dbus::testing::Fixture::default_system_bus_config_file() =
core::testing::system_bus_configuration_file();
struct DBus
{
static const std::string& name()
{
static const std::string s{DBUS_SERVICE_DBUS};
return s;
}
DBUS_CPP_METHOD_WITH_TIMEOUT_DEF(ListNames, DBus, 25000)
};
struct CountingEventCollector
{
CountingEventCollector(int expected)
: expected{expected},
counter{0}
{
}
void update()
{
if (++counter == expected)
wait_condition.notify_all();
}
::testing::AssertionResult wait_for(const std::chrono::milliseconds& ms)
{
std::unique_lock<std::mutex> ul(guard);
auto result = wait_condition.wait_for(ul, ms, [this]() { return counter == expected; });
if (result)
return ::testing::AssertionSuccess();
return ::testing::AssertionFailure() << "Current count of "
<< counter << " does not match " << expected;
}
int expected;
std::atomic<int> counter;
std::mutex guard;
std::condition_variable wait_condition;
};
void invoke_list_names_n_times_and_update_event_collector(
// The object referring to the bus daemon
const core::dbus::Object::Ptr& dbus,
// Number of iterations
std::size_t n,
// The event collector instance that should be updated
const std::shared_ptr<CountingEventCollector>& ec)
{
for (unsigned int i = 0; i < n; i++)
{
dbus->invoke_method_asynchronously_with_callback<DBus::ListNames, std::vector<std::string>>([ec](const core::dbus::Result<std::vector<std::string>>& vs)
{
if (not vs.is_error())
ec->update();
});
}
}
}
TEST_F(AsyncExecutionLoadTest, RepeatedlyInvokingAnAsyncFunctionWorks)
{
using namespace ::testing;
auto bus = session_bus();
bus->install_executor(core::dbus::asio::make_executor(bus));
std::thread worker{[bus]() { bus->run(); }};
auto service = core::dbus::Service::use_service(bus, DBus::name());
auto dbus = service->object_for_path(core::dbus::types::ObjectPath{DBUS_PATH_DBUS});
auto ec = std::make_shared<CountingEventCollector>(500);
std::thread t1{[dbus, ec]() {invoke_list_names_n_times_and_update_event_collector(dbus, 100, ec);}};
std::thread t2{[dbus, ec]() {invoke_list_names_n_times_and_update_event_collector(dbus, 100, ec);}};
std::thread t3{[dbus, ec]() {invoke_list_names_n_times_and_update_event_collector(dbus, 100, ec);}};
std::thread t4{[dbus, ec]() {invoke_list_names_n_times_and_update_event_collector(dbus, 100, ec);}};
std::thread t5{[dbus, ec]() {invoke_list_names_n_times_and_update_event_collector(dbus, 100, ec);}};
EXPECT_TRUE(ec->wait_for(std::chrono::minutes{10}));
bus->stop();
if (t1.joinable()) t1.join();
if (t2.joinable()) t2.join();
if (t3.joinable()) t3.join();
if (t4.joinable()) t4.join();
if (t5.joinable()) t5.join();
if (worker.joinable())
worker.join();
}
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