/*
- * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
+ * uloop - event loop implementation
*
- * 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 2 of the License, or
- * (at your option) any later version.
+ * Copyright (C) 2010-2013 Felix Fietkau <nbd@openwrt.org>
*
- * 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
*
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-
#ifndef _ULOOP_H__
#define _ULOOP_H__
#include <sys/time.h>
+#include <sys/types.h>
#include <stdbool.h>
+#include <stdint.h>
+#include <signal.h>
+
+#if defined(__APPLE__) || defined(__FreeBSD__)
+#define USE_KQUEUE
+#else
+#define USE_EPOLL
+#endif
+
+#include "list.h"
struct uloop_fd;
struct uloop_timeout;
+struct uloop_process;
typedef void (*uloop_fd_handler)(struct uloop_fd *u, unsigned int events);
typedef void (*uloop_timeout_handler)(struct uloop_timeout *t);
+typedef void (*uloop_process_handler)(struct uloop_process *c, int ret);
#define ULOOP_READ (1 << 0)
#define ULOOP_WRITE (1 << 1)
#define ULOOP_EDGE_TRIGGER (1 << 2)
+#define ULOOP_BLOCKING (1 << 3)
+
+#define ULOOP_EVENT_MASK (ULOOP_READ | ULOOP_WRITE)
+
+/* internal flags */
+#define ULOOP_EVENT_BUFFERED (1 << 4)
+#ifdef USE_KQUEUE
+#define ULOOP_EDGE_DEFER (1 << 5)
+#endif
+
+#define ULOOP_ERROR_CB (1 << 6)
struct uloop_fd
{
bool eof;
bool error;
bool registered;
+ uint8_t flags;
};
struct uloop_timeout
{
+ struct list_head list;
+ bool pending;
+
uloop_timeout_handler cb;
- struct uloop_timeout *prev;
- struct uloop_timeout *next;
struct timeval time;
+};
+
+struct uloop_process
+{
+ struct list_head list;
bool pending;
+
+ uloop_process_handler cb;
+ pid_t pid;
};
+extern bool uloop_cancelled;
+extern bool uloop_handle_sigchld;
+
int uloop_fd_add(struct uloop_fd *sock, unsigned int flags);
int uloop_fd_delete(struct uloop_fd *sock);
int uloop_timeout_add(struct uloop_timeout *timeout);
int uloop_timeout_set(struct uloop_timeout *timeout, int msecs);
int uloop_timeout_cancel(struct uloop_timeout *timeout);
+int uloop_timeout_remaining(struct uloop_timeout *timeout);
+
+int uloop_process_add(struct uloop_process *p);
+int uloop_process_delete(struct uloop_process *p);
+
+bool uloop_cancelling(void);
+
+static inline void uloop_end(void)
+{
+ uloop_cancelled = true;
+}
-void uloop_end(void);
int uloop_init(void);
-void uloop_run(void);
+int uloop_run_timeout(int timeout);
+static inline int uloop_run(void)
+{
+ return uloop_run_timeout(-1);
+}
void uloop_done(void);
#endif