Avoid allocating packet buffers unnecessarily.

[meshlink] / src / event.h

diff --git a/src/event.h b/src/event.h
index 5833ad116f89886b167e79c5085486e6d60cf910..31c326be141f37177d636b1dbfd7e65af7f8f3c4 100644 (file)
--- a/src/event.h
+++ b/src/event.h
@@ -1,7 +1,9 @@
+#ifndef MESHLINK_EVENT_H
+#define MESHLINK_EVENT_H
+
 /*
-    event.h -- header for event.c
-    Copyright (C) 2002 Guus Sliepen <guus@sliepen.eu.org>,
-                  2002 Ivo Timmermans <ivo@o2w.nl>
+    event.h -- I/O, timeout and signal event handling
+    Copyright (C) 2014, 2017 Guus Sliepen <guus@meshlink.io>
 
     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
@@ -13,36 +15,88 @@
     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., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-    $Id: event.h,v 1.1.4.3 2002/09/09 21:24:34 guus Exp $
+    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.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
-#ifndef __TINC_EVENT_H__
-#define __TINC_EVENT_H__
+#include "splay_tree.h"
+#include "system.h"
+#include <pthread.h>
 
-#include <time.h>
-#include <avl_tree.h>
+#define IO_READ 1
+#define IO_WRITE 2
 
-avl_tree_t *event_tree;
+typedef struct event_loop_t event_loop_t;
 
-typedef void (*event_handler_t) (void *);
+typedef void (*io_cb_t)(event_loop_t *loop, void *data, int flags);
+typedef void (*timeout_cb_t)(event_loop_t *loop, void *data);
+typedef void (*signal_cb_t)(event_loop_t *loop, void *data);
+typedef struct timespec(*idle_cb_t)(event_loop_t *loop, void *data);
 
-typedef struct {
-       time_t time;
-       int id;
-       event_handler_t handler;
+typedef struct io_t {
+       struct splay_node_t node;
+       int fd;
+       int flags;
+       io_cb_t cb;
        void *data;
-} event_t;
+} io_t;
+
+typedef struct timeout_t {
+       struct splay_node_t node;
+       struct timespec tv;
+       timeout_cb_t cb;
+       void *data;
+} timeout_t;
+
+typedef struct signal_t {
+       struct splay_node_t node;
+       int signum;
+       bool set;
+       signal_cb_t cb;
+       void *data;
+} signal_t;
+
+struct event_loop_t {
+       void *data;
+
+       volatile bool running;
+       bool deletion;
+
+       struct timespec now;
+
+       splay_tree_t timeouts;
+       idle_cb_t idle_cb;
+       void *idle_data;
+       splay_tree_t ios;
+       splay_tree_t signals;
+
+       fd_set readfds;
+       fd_set writefds;
+
+       io_t signalio;
+       int pipefd[2];
+};
+
+extern void io_add(event_loop_t *loop, io_t *io, io_cb_t cb, void *data, int fd, int flags);
+extern void io_del(event_loop_t *loop, io_t *io);
+extern void io_set(event_loop_t *loop, io_t *io, int flags);
+
+extern void timeout_add(event_loop_t *loop, timeout_t *timeout, timeout_cb_t cb, void *data, struct timespec *tv);
+extern void timeout_del(event_loop_t *loop, timeout_t *timeout);
+extern void timeout_set(event_loop_t *loop, timeout_t *timeout, struct timespec *tv);
+
+extern void signal_add(event_loop_t *loop, signal_t *sig, signal_cb_t cb, void *data, uint8_t signum);
+extern void signal_trigger(event_loop_t *loop, signal_t *sig);
+extern void signal_del(event_loop_t *loop, signal_t *sig);
+
+extern void idle_set(event_loop_t *loop, idle_cb_t cb, void *data);
 
-extern void init_events(void);
-extern void exit_events(void);
-extern event_t *new_event(void);
-extern void free_event(event_t *);
-extern void event_add(event_t *);
-extern void event_del(event_t *);
-extern event_t *get_expired_event(void);
+extern void event_loop_init(event_loop_t *loop);
+extern void event_loop_exit(event_loop_t *loop);
+extern bool event_loop_run(event_loop_t *loop, pthread_mutex_t *mutex) __attribute__((__warn_unused_result__));
+extern void event_loop_flush_output(event_loop_t *loop);
+extern void event_loop_start(event_loop_t *loop);
+extern void event_loop_stop(event_loop_t *loop);
 
-#endif                                                 /* __TINC_EVENT_H__ */
+#endif