2 Unix SMB/CIFS implementation.
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Volker Lendecke 2005
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 struct timed_event *next, *prev;
26 struct event_context *event_ctx;
28 const char *event_name;
29 void (*handler)(struct event_context *event_ctx,
30 struct timed_event *te,
31 const struct timeval *now,
37 struct fd_event *prev, *next;
38 struct event_context *event_ctx;
40 uint16_t flags; /* see EVENT_FD_* flags */
41 void (*handler)(struct event_context *event_ctx,
42 struct fd_event *event,
48 #define EVENT_FD_WRITEABLE(fde) \
49 event_set_fd_flags(fde, event_get_fd_flags(fde) | EVENT_FD_WRITE)
50 #define EVENT_FD_READABLE(fde) \
51 event_set_fd_flags(fde, event_get_fd_flags(fde) | EVENT_FD_READ)
53 #define EVENT_FD_NOT_WRITEABLE(fde) \
54 event_set_fd_flags(fde, event_get_fd_flags(fde) & ~EVENT_FD_WRITE)
55 #define EVENT_FD_NOT_READABLE(fde) \
56 event_set_fd_flags(fde, event_get_fd_flags(fde) & ~EVENT_FD_READ)
58 struct event_context {
59 struct timed_event *timed_events;
60 struct fd_event *fd_events;
63 static int timed_event_destructor(struct timed_event *te)
65 DEBUG(10, ("Destroying timed event %lx \"%s\"\n", (unsigned long)te,
67 DLIST_REMOVE(te->event_ctx->timed_events, te);
71 /****************************************************************************
72 Schedule a function for future calling, cancel with TALLOC_FREE().
73 It's the responsibility of the handler to call TALLOC_FREE() on the event
75 ****************************************************************************/
77 struct timed_event *event_add_timed(struct event_context *event_ctx,
80 const char *event_name,
81 void (*handler)(struct event_context *event_ctx,
82 struct timed_event *te,
83 const struct timeval *now,
87 struct timed_event *te, *last_te, *cur_te;
89 te = TALLOC_P(mem_ctx, struct timed_event);
91 DEBUG(0, ("talloc failed\n"));
95 te->event_ctx = event_ctx;
97 te->event_name = event_name;
98 te->handler = handler;
99 te->private_data = private_data;
101 /* keep the list ordered - this is NOT guarenteed as event times
102 may be changed after insertion */
104 for (cur_te = event_ctx->timed_events; cur_te; cur_te = cur_te->next) {
105 /* if the new event comes before the current one break */
106 if (!timeval_is_zero(&cur_te->when)
107 && timeval_compare(&te->when, &cur_te->when) < 0) {
113 DLIST_ADD_AFTER(event_ctx->timed_events, te, last_te);
114 talloc_set_destructor(te, timed_event_destructor);
116 DEBUG(10, ("Added timed event \"%s\": %lx\n", event_name,
121 static int fd_event_destructor(struct fd_event *fde)
123 struct event_context *event_ctx = fde->event_ctx;
125 DLIST_REMOVE(event_ctx->fd_events, fde);
129 struct fd_event *event_add_fd(struct event_context *event_ctx,
131 int fd, uint16_t flags,
132 void (*handler)(struct event_context *event_ctx,
133 struct fd_event *event,
138 struct fd_event *fde;
140 if (!(fde = TALLOC_P(mem_ctx, struct fd_event))) {
144 fde->event_ctx = event_ctx;
147 fde->handler = handler;
148 fde->private_data = private_data;
150 DLIST_ADD(event_ctx->fd_events, fde);
152 talloc_set_destructor(fde, fd_event_destructor);
156 void event_fd_set_writeable(struct fd_event *fde)
158 fde->flags |= EVENT_FD_WRITE;
161 void event_fd_set_not_writeable(struct fd_event *fde)
163 fde->flags &= ~EVENT_FD_WRITE;
166 void event_fd_set_readable(struct fd_event *fde)
168 fde->flags |= EVENT_FD_READ;
171 void event_fd_set_not_readable(struct fd_event *fde)
173 fde->flags &= ~EVENT_FD_READ;
176 void event_add_to_select_args(struct event_context *event_ctx,
177 const struct timeval *now,
178 fd_set *read_fds, fd_set *write_fds,
179 struct timeval *timeout, int *maxfd)
181 struct fd_event *fde;
184 for (fde = event_ctx->fd_events; fde; fde = fde->next) {
185 if (fde->flags & EVENT_FD_READ) {
186 FD_SET(fde->fd, read_fds);
188 if (fde->flags & EVENT_FD_WRITE) {
189 FD_SET(fde->fd, write_fds);
192 if ((fde->flags & (EVENT_FD_READ|EVENT_FD_WRITE))
193 && (fde->fd > *maxfd)) {
198 if (event_ctx->timed_events == NULL) {
202 diff = timeval_until(now, &event_ctx->timed_events->when);
203 *timeout = timeval_min(timeout, &diff);
206 BOOL run_events(struct event_context *event_ctx,
207 int selrtn, fd_set *read_fds, fd_set *write_fds)
210 struct fd_event *fde, *next;
212 /* Run all events that are pending, not just one (as we
215 while (event_ctx->timed_events) {
220 &now, &event_ctx->timed_events->when) < 0) {
221 /* Nothing to do yet */
222 DEBUG(11, ("run_events: Nothing to do\n"));
226 DEBUG(10, ("Running event \"%s\" %lx\n",
227 event_ctx->timed_events->event_name,
228 (unsigned long)event_ctx->timed_events));
230 event_ctx->timed_events->handler(
232 event_ctx->timed_events, &now,
233 event_ctx->timed_events->private_data);
240 * We might have changed the socket status during the timed
241 * events, return to run select again.
253 for (fde = event_ctx->fd_events; fde; fde = next) {
257 if (FD_ISSET(fde->fd, read_fds)) flags |= EVENT_FD_READ;
258 if (FD_ISSET(fde->fd, write_fds)) flags |= EVENT_FD_WRITE;
261 fde->handler(event_ctx, fde, flags, fde->private_data);
270 struct timeval *get_timed_events_timeout(struct event_context *event_ctx,
271 struct timeval *to_ret)
275 if (event_ctx->timed_events == NULL) {
279 now = timeval_current();
280 *to_ret = timeval_until(&now, &event_ctx->timed_events->when);
282 DEBUG(10, ("timed_events_timeout: %d/%d\n", (int)to_ret->tv_sec,
283 (int)to_ret->tv_usec));
288 struct event_context *event_context_init(TALLOC_CTX *mem_ctx)
290 return TALLOC_ZERO_P(NULL, struct event_context);
293 int set_event_dispatch_time(struct event_context *event_ctx,
294 const char *event_name, struct timeval when)
297 struct timed_event *te;
299 for (te = event_ctx->timed_events; te; te = te->next) {
300 if (strcmp(event_name, te->event_name) == 0) {
308 /* Returns 1 if event was found and cancelled, 0 otherwise. */
310 int cancel_named_event(struct event_context *event_ctx,
311 const char *event_name)
313 struct timed_event *te;
315 for (te = event_ctx->timed_events; te; te = te->next) {
316 if (strcmp(event_name, te->event_name) == 0) {