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 3 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, see <http://www.gnu.org/licenses/>.
22 #include <tevent_internal.h>
24 void event_fd_set_writeable(struct tevent_fd *fde)
26 TEVENT_FD_WRITEABLE(fde);
29 void event_fd_set_not_writeable(struct tevent_fd *fde)
31 TEVENT_FD_NOT_WRITEABLE(fde);
34 void event_fd_set_readable(struct tevent_fd *fde)
36 TEVENT_FD_READABLE(fde);
39 void event_fd_set_not_readable(struct tevent_fd *fde)
41 TEVENT_FD_NOT_READABLE(fde);
45 * Return if there's something in the queue
48 bool event_add_to_select_args(struct tevent_context *ev,
49 const struct timeval *now,
50 fd_set *read_fds, fd_set *write_fds,
51 struct timeval *timeout, int *maxfd)
53 struct tevent_fd *fde;
57 for (fde = ev->fd_events; fde; fde = fde->next) {
58 if (fde->flags & EVENT_FD_READ) {
59 FD_SET(fde->fd, read_fds);
62 if (fde->flags & EVENT_FD_WRITE) {
63 FD_SET(fde->fd, write_fds);
67 if ((fde->flags & (EVENT_FD_READ|EVENT_FD_WRITE))
68 && (fde->fd > *maxfd)) {
73 if (ev->timer_events == NULL) {
77 diff = timeval_until(now, &ev->timer_events->next_event);
78 *timeout = timeval_min(timeout, &diff);
83 bool run_events(struct tevent_context *ev,
84 int selrtn, fd_set *read_fds, fd_set *write_fds)
87 struct tevent_fd *fde, *next;
89 if (ev->signal_events &&
90 tevent_common_check_signal(ev)) {
94 /* Run all events that are pending, not just one (as we
97 while (ev->timer_events) {
102 &now, &ev->timer_events->next_event) < 0) {
103 /* Nothing to do yet */
104 DEBUG(11, ("run_events: Nothing to do\n"));
108 DEBUG(10, ("Running event \"%s\" %p\n",
109 ev->timer_events->handler_name,
112 ev->timer_events->handler(
114 ev->timer_events, now,
115 ev->timer_events->private_data);
122 * We might have changed the socket status during the timed
123 * events, return to run select again.
135 for (fde = ev->fd_events; fde; fde = next) {
139 if (FD_ISSET(fde->fd, read_fds)) flags |= EVENT_FD_READ;
140 if (FD_ISSET(fde->fd, write_fds)) flags |= EVENT_FD_WRITE;
142 if (flags & fde->flags) {
143 fde->handler(ev, fde, flags, fde->private_data);
152 struct timeval *get_timed_events_timeout(struct tevent_context *ev,
153 struct timeval *to_ret)
157 if (ev->timer_events == NULL) {
161 now = timeval_current();
162 *to_ret = timeval_until(&now, &ev->timer_events->next_event);
164 DEBUG(10, ("timed_events_timeout: %d/%d\n", (int)to_ret->tv_sec,
165 (int)to_ret->tv_usec));
170 static int s3_event_loop_once(struct tevent_context *ev)
172 struct timeval now, to;
180 to.tv_sec = 9999; /* Max timeout */
183 if (run_events(ev, 0, NULL, NULL)) {
189 if (!event_add_to_select_args(ev, &now, &r_fds, &w_fds, &to, &maxfd)) {
193 ret = sys_select(maxfd+1, &r_fds, &w_fds, NULL, &to);
195 if (ret == -1 && errno != EINTR) {
196 tevent_debug(ev, TEVENT_DEBUG_FATAL,
197 "sys_select() failed: %d:%s\n",
198 errno, strerror(errno));
202 run_events(ev, ret, &r_fds, &w_fds);
206 static int s3_event_loop_wait(struct tevent_context *ev)
211 ret = s3_event_loop_once(ev);
217 void event_context_reinit(struct tevent_context *ev)
219 tevent_common_context_destructor(ev);
223 static int s3_event_context_init(struct tevent_context *ev)
228 void dump_event_list(struct tevent_context *ev)
230 struct tevent_timer *te;
231 struct tevent_fd *fe;
232 struct timeval evt, now;
238 now = timeval_current();
240 DEBUG(10,("dump_event_list:\n"));
242 for (te = ev->timer_events; te; te = te->next) {
244 evt = timeval_until(&now, &te->next_event);
246 DEBUGADD(10,("Timed Event \"%s\" %p handled in %d seconds (at %s)\n",
250 http_timestring(talloc_tos(), te->next_event.tv_sec)));
253 for (fe = ev->fd_events; fe; fe = fe->next) {
255 DEBUGADD(10,("FD Event %d %p, flags: 0x%04x\n",
262 static const struct tevent_ops s3_event_ops = {
263 .context_init = s3_event_context_init,
264 .add_fd = tevent_common_add_fd,
265 .set_fd_close_fn= tevent_common_fd_set_close_fn,
266 .get_fd_flags = tevent_common_fd_get_flags,
267 .set_fd_flags = tevent_common_fd_set_flags,
268 .add_timer = tevent_common_add_timer,
269 .add_signal = tevent_common_add_signal,
270 .loop_once = s3_event_loop_once,
271 .loop_wait = s3_event_loop_wait,
274 static bool s3_tevent_init(void)
276 static bool initialized;
280 initialized = tevent_register_backend("s3", &s3_event_ops);
281 tevent_set_default_backend("s3");
286 this is used to catch debug messages from events
288 static void s3_event_debug(void *context, enum tevent_debug_level level,
289 const char *fmt, va_list ap) PRINTF_ATTRIBUTE(3,0);
291 static void s3_event_debug(void *context, enum tevent_debug_level level,
292 const char *fmt, va_list ap)
294 int samba_level = -1;
297 case TEVENT_DEBUG_FATAL:
300 case TEVENT_DEBUG_ERROR:
303 case TEVENT_DEBUG_WARNING:
306 case TEVENT_DEBUG_TRACE:
311 vasprintf(&s, fmt, ap);
313 DEBUG(samba_level, ("s3_event: %s", s));
317 struct tevent_context *s3_tevent_context_init(TALLOC_CTX *mem_ctx)
319 struct tevent_context *ev;
323 ev = tevent_context_init_byname(mem_ctx, "s3");
325 tevent_set_debug(ev, s3_event_debug, NULL);