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/*
* Copyright © 2015 Canonical Ltd.
*
* 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 warranty of
* MERCHANTABILITY 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/>.
*
* Authored by: Alexandros Frantzis <alexandros.frantzis@canonical.com>
*/
#ifndef USC_DBUS_EVENT_LOOP_H_
#define USC_DBUS_EVENT_LOOP_H_
#include <mir/fd.h>
#include <dbus/dbus.h>
#include <atomic>
#include <vector>
#include <mutex>
#include <future>
namespace usc
{
class DBusConnectionHandle;
class DBusEventLoop
{
public:
DBusEventLoop();
~DBusEventLoop();
void add_connection(std::shared_ptr<DBusConnectionHandle> const& connection);
void run(std::promise<void>& started);
void stop();
void enqueue(std::function<void()> const& action);
private:
std::vector<DBusWatch*> enabled_watches_for(int fd);
DBusTimeout* enabled_timeout_for(int fd);
dbus_bool_t add_watch(DBusWatch* watch);
void remove_watch(DBusWatch* watch);
void toggle_watch(DBusWatch* watch);
void update_events_for_watch_fd(int watch_fd);
bool is_watched(int watch_fd);
uint32_t epoll_events_for_watch_fd(int watch_fd);
dbus_bool_t add_timeout(DBusTimeout* timeout);
void remove_timeout(DBusTimeout* timeout);
void toggle_timeout(DBusTimeout* timeout);
dbus_bool_t update_timer_fd_for(DBusTimeout* timeout);
int timer_fd_for(DBusTimeout* timeout);
void wake_up_loop();
void dispatch_actions();
static dbus_bool_t static_add_watch(DBusWatch* watch, void* data);
static void static_remove_watch(DBusWatch* watch, void* data);
static void static_toggle_watch(DBusWatch* watch, void* data);
static dbus_bool_t static_add_timeout(DBusTimeout* timeout, void* data);
static void static_remove_timeout(DBusTimeout* timeout, void* data);
static void static_toggle_timeout(DBusTimeout* timeout, void* data);
static void static_wake_up_loop(void* data);
std::atomic<bool> running;
std::mutex mutex;
std::vector<std::shared_ptr<DBusConnectionHandle>> connections;
std::vector<DBusWatch*> watches;
std::vector<std::pair<DBusTimeout*,mir::Fd>> timeouts;
std::vector<std::function<void(void)>> actions;
mir::Fd epoll_fd;
mir::Fd wake_up_fd_r;
mir::Fd wake_up_fd_w;
};
}
#endif
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