]>
Commit | Line | Data |
---|---|---|
fd38203a LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include "sd-event.h" | |
3ffd4af2 LP |
23 | |
24 | #include "fd-util.h" | |
fd38203a | 25 | #include "log.h" |
0c0cdb06 | 26 | #include "macro.h" |
24882e06 | 27 | #include "signal-util.h" |
3ffd4af2 | 28 | #include "util.h" |
fd38203a LP |
29 | |
30 | static int prepare_handler(sd_event_source *s, void *userdata) { | |
31 | log_info("preparing %c", PTR_TO_INT(userdata)); | |
32 | return 1; | |
33 | } | |
34 | ||
12179984 | 35 | static bool got_a, got_b, got_c, got_unref; |
9ec9694c | 36 | static unsigned got_d; |
fd38203a | 37 | |
12179984 LP |
38 | static int unref_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) { |
39 | sd_event_source_unref(s); | |
40 | got_unref = true; | |
41 | return 0; | |
42 | } | |
43 | ||
fd38203a LP |
44 | static int io_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) { |
45 | ||
46 | log_info("got IO on %c", PTR_TO_INT(userdata)); | |
47 | ||
48 | if (userdata == INT_TO_PTR('a')) { | |
baf76283 | 49 | assert_se(sd_event_source_set_enabled(s, SD_EVENT_OFF) >= 0); |
fd38203a LP |
50 | assert_se(!got_a); |
51 | got_a = true; | |
52 | } else if (userdata == INT_TO_PTR('b')) { | |
53 | assert_se(!got_b); | |
54 | got_b = true; | |
9ec9694c DS |
55 | } else if (userdata == INT_TO_PTR('d')) { |
56 | got_d++; | |
57 | if (got_d < 2) | |
58 | assert_se(sd_event_source_set_enabled(s, SD_EVENT_ONESHOT) >= 0); | |
59 | else | |
60 | assert_se(sd_event_source_set_enabled(s, SD_EVENT_OFF) >= 0); | |
fd38203a LP |
61 | } else |
62 | assert_not_reached("Yuck!"); | |
63 | ||
64 | return 1; | |
65 | } | |
66 | ||
67 | static int child_handler(sd_event_source *s, const siginfo_t *si, void *userdata) { | |
68 | ||
0c0cdb06 RC |
69 | assert_se(s); |
70 | assert_se(si); | |
fd38203a LP |
71 | |
72 | log_info("got child on %c", PTR_TO_INT(userdata)); | |
73 | ||
0c0cdb06 | 74 | assert_se(userdata == INT_TO_PTR('f')); |
fd38203a | 75 | |
6203e07a | 76 | assert_se(sd_event_exit(sd_event_source_get_event(s), 0) >= 0); |
fd38203a LP |
77 | sd_event_source_unref(s); |
78 | ||
79 | return 1; | |
80 | } | |
81 | ||
82 | static int signal_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { | |
39883f62 | 83 | sd_event_source *p = NULL; |
fd38203a LP |
84 | pid_t pid; |
85 | ||
0c0cdb06 RC |
86 | assert_se(s); |
87 | assert_se(si); | |
fd38203a LP |
88 | |
89 | log_info("got signal on %c", PTR_TO_INT(userdata)); | |
90 | ||
0c0cdb06 | 91 | assert_se(userdata == INT_TO_PTR('e')); |
fd38203a | 92 | |
72c0a2c2 | 93 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, -1) >= 0); |
fd38203a LP |
94 | |
95 | pid = fork(); | |
96 | assert_se(pid >= 0); | |
97 | ||
98 | if (pid == 0) | |
99 | _exit(0); | |
100 | ||
151b9b96 | 101 | assert_se(sd_event_add_child(sd_event_source_get_event(s), &p, pid, WEXITED, child_handler, INT_TO_PTR('f')) >= 0); |
baf76283 | 102 | assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0); |
fd38203a LP |
103 | |
104 | sd_event_source_unref(s); | |
105 | ||
106 | return 1; | |
107 | } | |
108 | ||
109 | static int defer_handler(sd_event_source *s, void *userdata) { | |
39883f62 | 110 | sd_event_source *p = NULL; |
fd38203a | 111 | |
0c0cdb06 | 112 | assert_se(s); |
fd38203a LP |
113 | |
114 | log_info("got defer on %c", PTR_TO_INT(userdata)); | |
115 | ||
0c0cdb06 | 116 | assert_se(userdata == INT_TO_PTR('d')); |
fd38203a | 117 | |
72c0a2c2 LP |
118 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGUSR1, -1) >= 0); |
119 | ||
151b9b96 | 120 | assert_se(sd_event_add_signal(sd_event_source_get_event(s), &p, SIGUSR1, signal_handler, INT_TO_PTR('e')) >= 0); |
baf76283 | 121 | assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0); |
fd38203a LP |
122 | raise(SIGUSR1); |
123 | ||
124 | sd_event_source_unref(s); | |
125 | ||
126 | return 1; | |
127 | } | |
128 | ||
129 | static bool do_quit = false; | |
130 | ||
131 | static int time_handler(sd_event_source *s, uint64_t usec, void *userdata) { | |
132 | log_info("got timer on %c", PTR_TO_INT(userdata)); | |
133 | ||
134 | if (userdata == INT_TO_PTR('c')) { | |
135 | ||
136 | if (do_quit) { | |
137 | sd_event_source *p; | |
138 | ||
151b9b96 | 139 | assert_se(sd_event_add_defer(sd_event_source_get_event(s), &p, defer_handler, INT_TO_PTR('d')) >= 0); |
baf76283 | 140 | assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0); |
fd38203a | 141 | } else { |
0c0cdb06 | 142 | assert_se(!got_c); |
fd38203a LP |
143 | got_c = true; |
144 | } | |
145 | } else | |
146 | assert_not_reached("Huh?"); | |
147 | ||
148 | return 2; | |
149 | } | |
150 | ||
6203e07a | 151 | static bool got_exit = false; |
da7e457c | 152 | |
6203e07a | 153 | static int exit_handler(sd_event_source *s, void *userdata) { |
da7e457c LP |
154 | log_info("got quit handler on %c", PTR_TO_INT(userdata)); |
155 | ||
6203e07a | 156 | got_exit = true; |
da7e457c LP |
157 | |
158 | return 3; | |
159 | } | |
160 | ||
9da4cb2b | 161 | static void test_basic(void) { |
fd38203a | 162 | sd_event *e = NULL; |
12179984 | 163 | sd_event_source *w = NULL, *x = NULL, *y = NULL, *z = NULL, *q = NULL, *t = NULL; |
fd38203a | 164 | static const char ch = 'x'; |
12179984 | 165 | int a[2] = { -1, -1 }, b[2] = { -1, -1}, d[2] = { -1, -1}, k[2] = { -1, -1 }; |
fd38203a LP |
166 | |
167 | assert_se(pipe(a) >= 0); | |
168 | assert_se(pipe(b) >= 0); | |
9ec9694c | 169 | assert_se(pipe(d) >= 0); |
12179984 | 170 | assert_se(pipe(k) >= 0); |
fd38203a | 171 | |
afc6adb5 | 172 | assert_se(sd_event_default(&e) >= 0); |
fd38203a | 173 | |
cde93897 LP |
174 | assert_se(sd_event_set_watchdog(e, true) >= 0); |
175 | ||
12179984 LP |
176 | /* Test whether we cleanly can destroy an io event source from its own handler */ |
177 | got_unref = false; | |
151b9b96 | 178 | assert_se(sd_event_add_io(e, &t, k[0], EPOLLIN, unref_handler, NULL) >= 0); |
12179984 LP |
179 | assert_se(write(k[1], &ch, 1) == 1); |
180 | assert_se(sd_event_run(e, (uint64_t) -1) >= 1); | |
181 | assert_se(got_unref); | |
182 | ||
9ec9694c DS |
183 | got_a = false, got_b = false, got_c = false, got_d = 0; |
184 | ||
185 | /* Add a oneshot handler, trigger it, re-enable it, and trigger | |
186 | * it again. */ | |
151b9b96 | 187 | assert_se(sd_event_add_io(e, &w, d[0], EPOLLIN, io_handler, INT_TO_PTR('d')) >= 0); |
9ec9694c DS |
188 | assert_se(sd_event_source_set_enabled(w, SD_EVENT_ONESHOT) >= 0); |
189 | assert_se(write(d[1], &ch, 1) >= 0); | |
190 | assert_se(sd_event_run(e, (uint64_t) -1) >= 1); | |
191 | assert_se(got_d == 1); | |
192 | assert_se(write(d[1], &ch, 1) >= 0); | |
193 | assert_se(sd_event_run(e, (uint64_t) -1) >= 1); | |
194 | assert_se(got_d == 2); | |
fd38203a | 195 | |
151b9b96 LP |
196 | assert_se(sd_event_add_io(e, &x, a[0], EPOLLIN, io_handler, INT_TO_PTR('a')) >= 0); |
197 | assert_se(sd_event_add_io(e, &y, b[0], EPOLLIN, io_handler, INT_TO_PTR('b')) >= 0); | |
6a0f1f6d | 198 | assert_se(sd_event_add_time(e, &z, CLOCK_MONOTONIC, 0, 0, time_handler, INT_TO_PTR('c')) >= 0); |
151b9b96 | 199 | assert_se(sd_event_add_exit(e, &q, exit_handler, INT_TO_PTR('g')) >= 0); |
fd38203a LP |
200 | |
201 | assert_se(sd_event_source_set_priority(x, 99) >= 0); | |
baf76283 | 202 | assert_se(sd_event_source_set_enabled(y, SD_EVENT_ONESHOT) >= 0); |
fd38203a LP |
203 | assert_se(sd_event_source_set_prepare(x, prepare_handler) >= 0); |
204 | assert_se(sd_event_source_set_priority(z, 50) >= 0); | |
baf76283 | 205 | assert_se(sd_event_source_set_enabled(z, SD_EVENT_ONESHOT) >= 0); |
fd38203a | 206 | assert_se(sd_event_source_set_prepare(z, prepare_handler) >= 0); |
a71fe8b8 LP |
207 | |
208 | /* Test for floating event sources */ | |
72c0a2c2 | 209 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN+1, -1) >= 0); |
a71fe8b8 | 210 | assert_se(sd_event_add_signal(e, NULL, SIGRTMIN+1, NULL, NULL) >= 0); |
fd38203a LP |
211 | |
212 | assert_se(write(a[1], &ch, 1) >= 0); | |
213 | assert_se(write(b[1], &ch, 1) >= 0); | |
214 | ||
215 | assert_se(!got_a && !got_b && !got_c); | |
216 | ||
217 | assert_se(sd_event_run(e, (uint64_t) -1) >= 1); | |
218 | ||
219 | assert_se(!got_a && got_b && !got_c); | |
220 | ||
221 | assert_se(sd_event_run(e, (uint64_t) -1) >= 1); | |
222 | ||
223 | assert_se(!got_a && got_b && got_c); | |
224 | ||
225 | assert_se(sd_event_run(e, (uint64_t) -1) >= 1); | |
226 | ||
227 | assert_se(got_a && got_b && got_c); | |
228 | ||
229 | sd_event_source_unref(x); | |
230 | sd_event_source_unref(y); | |
231 | ||
232 | do_quit = true; | |
233 | assert_se(sd_event_source_set_time(z, now(CLOCK_MONOTONIC) + 200 * USEC_PER_MSEC) >= 0); | |
baf76283 | 234 | assert_se(sd_event_source_set_enabled(z, SD_EVENT_ONESHOT) >= 0); |
fd38203a LP |
235 | |
236 | assert_se(sd_event_loop(e) >= 0); | |
5657c75f | 237 | assert_se(got_exit); |
fd38203a LP |
238 | |
239 | sd_event_source_unref(z); | |
da7e457c | 240 | sd_event_source_unref(q); |
fd38203a | 241 | |
d5e4ec5b LP |
242 | sd_event_source_unref(w); |
243 | ||
fd38203a LP |
244 | sd_event_unref(e); |
245 | ||
3d94f76c LP |
246 | safe_close_pair(a); |
247 | safe_close_pair(b); | |
248 | safe_close_pair(d); | |
249 | safe_close_pair(k); | |
9da4cb2b LP |
250 | } |
251 | ||
252 | static int last_rtqueue_sigval = 0; | |
253 | static int n_rtqueue = 0; | |
254 | ||
255 | static int rtqueue_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { | |
256 | last_rtqueue_sigval = si->ssi_int; | |
257 | n_rtqueue ++; | |
258 | return 0; | |
259 | } | |
260 | ||
261 | static void test_rtqueue(void) { | |
262 | sd_event_source *u = NULL, *v = NULL, *s = NULL; | |
263 | sd_event *e = NULL; | |
264 | ||
265 | assert_se(sd_event_default(&e) >= 0); | |
266 | ||
267 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN+2, SIGRTMIN+3, SIGUSR2, -1) >= 0); | |
268 | assert_se(sd_event_add_signal(e, &u, SIGRTMIN+2, rtqueue_handler, NULL) >= 0); | |
269 | assert_se(sd_event_add_signal(e, &v, SIGRTMIN+3, rtqueue_handler, NULL) >= 0); | |
270 | assert_se(sd_event_add_signal(e, &s, SIGUSR2, rtqueue_handler, NULL) >= 0); | |
271 | ||
272 | assert_se(sd_event_source_set_priority(v, -10) >= 0); | |
273 | ||
274 | assert(sigqueue(getpid(), SIGRTMIN+2, (union sigval) { .sival_int = 1 }) >= 0); | |
275 | assert(sigqueue(getpid(), SIGRTMIN+3, (union sigval) { .sival_int = 2 }) >= 0); | |
276 | assert(sigqueue(getpid(), SIGUSR2, (union sigval) { .sival_int = 3 }) >= 0); | |
277 | assert(sigqueue(getpid(), SIGRTMIN+3, (union sigval) { .sival_int = 4 }) >= 0); | |
278 | assert(sigqueue(getpid(), SIGUSR2, (union sigval) { .sival_int = 5 }) >= 0); | |
279 | ||
280 | assert_se(n_rtqueue == 0); | |
281 | assert_se(last_rtqueue_sigval == 0); | |
282 | ||
283 | assert_se(sd_event_run(e, (uint64_t) -1) >= 1); | |
284 | assert_se(n_rtqueue == 1); | |
285 | assert_se(last_rtqueue_sigval == 2); /* first SIGRTMIN+3 */ | |
286 | ||
287 | assert_se(sd_event_run(e, (uint64_t) -1) >= 1); | |
288 | assert_se(n_rtqueue == 2); | |
289 | assert_se(last_rtqueue_sigval == 4); /* second SIGRTMIN+3 */ | |
290 | ||
291 | assert_se(sd_event_run(e, (uint64_t) -1) >= 1); | |
292 | assert_se(n_rtqueue == 3); | |
293 | assert_se(last_rtqueue_sigval == 3); /* first SIGUSR2 */ | |
294 | ||
295 | assert_se(sd_event_run(e, (uint64_t) -1) >= 1); | |
296 | assert_se(n_rtqueue == 4); | |
297 | assert_se(last_rtqueue_sigval == 1); /* SIGRTMIN+2 */ | |
298 | ||
299 | assert_se(sd_event_run(e, 0) == 0); /* the other SIGUSR2 is dropped, because the first one was still queued */ | |
300 | assert_se(n_rtqueue == 4); | |
301 | assert_se(last_rtqueue_sigval == 1); | |
302 | ||
303 | sd_event_source_unref(u); | |
304 | sd_event_source_unref(v); | |
305 | sd_event_source_unref(s); | |
306 | ||
307 | sd_event_unref(e); | |
308 | } | |
309 | ||
310 | int main(int argc, char *argv[]) { | |
311 | ||
312 | test_basic(); | |
313 | test_rtqueue(); | |
fd38203a LP |
314 | |
315 | return 0; | |
316 | } |