RetroArch/input/common/epoll_common.c
2016-01-10 04:33:01 +01:00

80 lines
2.0 KiB
C

/* RetroArch - A frontend for libretro.
* Copyright (C) 2013-2014 - pinumbernumber
* Copyright (C) 2011-2016 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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 RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include "epoll_common.h"
#include "../../verbosity.h"
static int g_epoll;
static bool epoll_inited;
static bool epoll_first_inited_is_joypad;
bool epoll_new(bool is_joypad)
{
if (epoll_inited)
return true;
g_epoll = epoll_create(32);
if (g_epoll < 0)
return false;
epoll_first_inited_is_joypad = is_joypad;
epoll_inited = true;
return true;
}
void epoll_free(bool is_joypad)
{
if (!epoll_inited || (is_joypad && !epoll_first_inited_is_joypad))
return;
if (g_epoll >= 0)
close(g_epoll);
g_epoll = -1;
epoll_inited = false;
epoll_first_inited_is_joypad = false;
}
int epoll_waiting(struct epoll_event *events, int maxevents, int timeout)
{
return epoll_wait(g_epoll, events, maxevents, timeout);
}
bool epoll_add(int fd, void *device)
{
struct epoll_event event = {0};
event.events = EPOLLIN;
event.data.ptr = device;
/* Shouldn't happen, but just check it. */
if (epoll_ctl(g_epoll, EPOLL_CTL_ADD, fd, &event) < 0)
{
RARCH_ERR("Failed to add FD (%d) to epoll list (%s).\n",
fd, strerror(errno));
return false;
}
return true;
}