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/*
ELAPI
Header file for the ELAPI async processing interface.
Copyright (C) Dmitri Pal <dpal@redhat.com> 2009
This program 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 Foundation; either version 3 of the License, or
(at your option) any later version.
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/>.
*/
#ifndef ELAPI_ASYNC_H
#define ELAPI_ASYNC_H
#include <sys/time.h>
/* Signature ELAPI callback function that
* should be called when the event loop got an event on the
* socket or file descriptor.
* ELAPI will always try to write to sockets in async way
* if the sink has this capability.
* So this is the callback that will always be
* invoked when we get ACK from the process receiving events.
*/
typedef int (*elapi_fd_callback)(int fd, /* File descriptor */
void *elapi_data); /* ELAPI supplied data */
/* Signature ELAPI callback function that
* should be called when the event loop got a timer driven event.
*/
typedef int (*elapi_timer_callback)(void *elapi_data); /* ELAPI supplied data */
/* Signature of the supplied by caller function that ELAPI
* will call to add the fd into the application event processing loop.
*/
typedef int (*elapi_add_fd)(int fd, /* File descriptor to add */
void *callers_data, /* Data that the function
* would need to do its work */
elapi_fd_callback handle, /* Callback to call when event happens */
void *elapi_data); /* Data to pass to the callback */
/* Signature of the supplied by caller function that ELAPI
* will call to remove the fd from the application event processing loop.
* The implementation of the function should assume that
* ELAPI will close file/socket descriptor after colling this function.
*/
typedef int (*elapi_rem_fd)(int fd, /* File descriptor to add */
void *callers_data); /* Data that the function
* would need to do its work */
/* Signature of the supplied by caller function that ELAPI
* will call to add a new timer event to the application event processing loop.
*/
typedef int (*elapi_add_timer)(struct timeval timer, /* Timer */
void *callers_data, /* Data that the function
* would need to do its work */
elapi_timer_callback handle, /* Callback to call when event happens */
void *elapi_data); /* Data to pass to the callback */
#endif
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