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/*
* Copyright (c) 2015-2020 Red Hat, Inc.
*
* All rights reserved.
*
* Author: Jan Friesse (jfriesse@redhat.com)
*
* This software licensed under BSD license, the text of which follows:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the Red Hat, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _PR_POLL_LOOP_H_
#define _PR_POLL_LOOP_H_
#include <sys/types.h>
#include <sys/queue.h>
#include <inttypes.h>
#include <nspr.h>
#include <poll.h>
#include "pr-poll-array.h"
#include "timer-list.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
* Return code: 0 - Ok, -1 - Don't add client, -2 - Return poll error
*/
typedef int (*pr_poll_loop_fd_set_events_cb_fn)(int fd, short *events,
void *user_data1, void *user_data2);
typedef int (*pr_poll_loop_prfd_set_events_cb_fn)(PRFileDesc *prfd, short *events,
void *user_data1, void *user_data2);
/*
* Return code: 0 - Ok, -1 - Return error
*/
typedef int (*pr_poll_loop_fd_read_cb_fn)(int fd, void *user_data1, void *user_data2);
typedef int (*pr_poll_loop_prfd_read_cb_fn)(PRFileDesc *prfd, const PRPollDesc *pd,
void *user_data1, void *user_data2);
/*
* Return code: 0 - Ok, -1 - Return error
*/
typedef int (*pr_poll_loop_fd_write_cb_fn)(int fd, void *user_data1, void *user_data2);
typedef int (*pr_poll_loop_prfd_write_cb_fn)(PRFileDesc *prfd,
const PRPollDesc *pd, void *user_data1, void *user_data2);
/*
* Return code: 0 - Ok, -1 - Return error
*/
typedef int (*pr_poll_loop_fd_err_cb_fn)(int fd, short revents, void *user_data1, void *user_data2);
typedef int (*pr_poll_loop_prfd_err_cb_fn)(PRFileDesc *prfd, short revents, const PRPollDesc *pd,
void *user_data1, void *user_data2);
/*
* Return code: 0 - Ok, -1 - Return error
*/
typedef int (*pr_poll_loop_pre_poll_cb_fn)(void *user_data1, void *user_data2);
struct pr_poll_loop_fd_entry {
int fd;
PRFileDesc *prfd;
short events;
pr_poll_loop_fd_set_events_cb_fn fd_set_events_cb;
pr_poll_loop_prfd_set_events_cb_fn prfd_set_events_cb;
pr_poll_loop_fd_read_cb_fn fd_read_cb;
pr_poll_loop_prfd_read_cb_fn prfd_read_cb;
pr_poll_loop_fd_write_cb_fn fd_write_cb;
pr_poll_loop_prfd_write_cb_fn prfd_write_cb;
pr_poll_loop_fd_err_cb_fn fd_err_cb;
pr_poll_loop_prfd_err_cb_fn prfd_err_cb;
void *user_data1;
void *user_data2;
TAILQ_ENTRY(pr_poll_loop_fd_entry) entries;
};
struct pr_poll_loop_pre_poll_cb_entry {
pr_poll_loop_pre_poll_cb_fn pre_poll_cb;
void *user_data1;
void *user_data2;
TAILQ_ENTRY(pr_poll_loop_pre_poll_cb_entry) entries;
};
struct pr_poll_loop {
TAILQ_HEAD(, pr_poll_loop_fd_entry) fd_list;
TAILQ_HEAD(, pr_poll_loop_pre_poll_cb_entry) pre_poll_cb_list;
struct timer_list tlist;
struct pr_poll_array poll_array;
};
extern void pr_poll_loop_init(struct pr_poll_loop *poll_loop);
extern int pr_poll_loop_add_fd(struct pr_poll_loop *poll_loop, int fd,
short events, pr_poll_loop_fd_set_events_cb_fn fd_set_events_cb,
pr_poll_loop_fd_read_cb_fn fd_read_cb,
pr_poll_loop_fd_read_cb_fn fd_write_cb,
pr_poll_loop_fd_err_cb_fn fd_err_cb,
void *user_data1, void *user_data2);
extern int pr_poll_loop_add_pre_poll_cb(struct pr_poll_loop *poll_loop,
pr_poll_loop_pre_poll_cb_fn pre_poll_cb,
void *user_data1, void *user_data2);
extern int pr_poll_loop_add_prfd(struct pr_poll_loop *poll_loop,
PRFileDesc *prfd, short events,
pr_poll_loop_prfd_set_events_cb_fn prfd_set_events_cb,
pr_poll_loop_prfd_read_cb_fn fd_read_cb,
pr_poll_loop_prfd_read_cb_fn fd_write_cb,
pr_poll_loop_prfd_err_cb_fn fd_err_cb,
void *user_data1, void *user_data2);
extern int pr_poll_loop_del_fd(struct pr_poll_loop *poll_loop, int fd);
extern int pr_poll_loop_del_pre_poll_cb(struct pr_poll_loop *poll_loop,
pr_poll_loop_pre_poll_cb_fn pre_poll_cb);
extern int pr_poll_loop_del_prfd(struct pr_poll_loop *poll_loop,
PRFileDesc *prfd);
/*
* Return codes:
* 0 - No error and all callbacks returned 0
* -1 - Either set_events returned -2 or some other callbacks returned -1
* -2 - Other error (events is not POLLIN|POLLOUT, or set_events cb was not 0, -1 or -2)
* -3 - PR_Poll returned -1
*/
extern int pr_poll_loop_exec(struct pr_poll_loop *poll_loop);
extern int pr_poll_loop_destroy(struct pr_poll_loop *poll_loop);
extern struct timer_list *pr_poll_loop_get_timer_list(struct pr_poll_loop *poll_loop);
#ifdef __cplusplus
}
#endif
#endif /* _PR_POLL_LOOP_H_ */
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