1 | /* |
1 | /* |
|
|
2 | * libev event processing core, watcher management |
|
|
3 | * |
2 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
3 | * All rights reserved. |
5 | * All rights reserved. |
4 | * |
6 | * |
5 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions are |
8 | * modification, are permitted provided that the following conditions are |
… | |
… | |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
30 | */ |
|
|
31 | #if EV_USE_CONFIG_H |
|
|
32 | # include "config.h" |
|
|
33 | #endif |
29 | |
34 | |
30 | #include <math.h> |
35 | #include <math.h> |
31 | #include <stdlib.h> |
36 | #include <stdlib.h> |
32 | #include <unistd.h> |
37 | #include <unistd.h> |
33 | #include <fcntl.h> |
38 | #include <fcntl.h> |
… | |
… | |
36 | |
41 | |
37 | #include <stdio.h> |
42 | #include <stdio.h> |
38 | |
43 | |
39 | #include <assert.h> |
44 | #include <assert.h> |
40 | #include <errno.h> |
45 | #include <errno.h> |
|
|
46 | #include <sys/types.h> |
|
|
47 | #ifndef WIN32 |
|
|
48 | # include <sys/wait.h> |
|
|
49 | #endif |
41 | #include <sys/time.h> |
50 | #include <sys/time.h> |
42 | #include <time.h> |
51 | #include <time.h> |
43 | |
52 | |
44 | #define HAVE_EPOLL 1 |
53 | /**/ |
45 | |
54 | |
46 | #ifndef HAVE_MONOTONIC |
55 | #ifndef EV_USE_MONOTONIC |
|
|
56 | # define EV_USE_MONOTONIC 1 |
|
|
57 | #endif |
|
|
58 | |
|
|
59 | #ifndef EV_USE_SELECT |
|
|
60 | # define EV_USE_SELECT 1 |
|
|
61 | #endif |
|
|
62 | |
|
|
63 | #ifndef EV_USE_POLL |
|
|
64 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
|
|
65 | #endif |
|
|
66 | |
|
|
67 | #ifndef EV_USE_EPOLL |
|
|
68 | # define EV_USE_EPOLL 0 |
|
|
69 | #endif |
|
|
70 | |
|
|
71 | #ifndef EV_USE_KQUEUE |
|
|
72 | # define EV_USE_KQUEUE 0 |
|
|
73 | #endif |
|
|
74 | |
|
|
75 | #ifndef EV_USE_REALTIME |
|
|
76 | # define EV_USE_REALTIME 1 |
|
|
77 | #endif |
|
|
78 | |
|
|
79 | /**/ |
|
|
80 | |
47 | # ifdef CLOCK_MONOTONIC |
81 | #ifndef CLOCK_MONOTONIC |
|
|
82 | # undef EV_USE_MONOTONIC |
48 | # define HAVE_MONOTONIC 1 |
83 | # define EV_USE_MONOTONIC 0 |
49 | # endif |
84 | #endif |
50 | #endif |
|
|
51 | |
85 | |
52 | #ifndef HAVE_SELECT |
|
|
53 | # define HAVE_SELECT 1 |
|
|
54 | #endif |
|
|
55 | |
|
|
56 | #ifndef HAVE_EPOLL |
|
|
57 | # define HAVE_EPOLL 0 |
|
|
58 | #endif |
|
|
59 | |
|
|
60 | #ifndef HAVE_REALTIME |
86 | #ifndef CLOCK_REALTIME |
61 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
87 | # undef EV_USE_REALTIME |
|
|
88 | # define EV_USE_REALTIME 0 |
62 | #endif |
89 | #endif |
|
|
90 | |
|
|
91 | /**/ |
63 | |
92 | |
64 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
93 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
65 | #define MAX_BLOCKTIME 60. |
94 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
|
|
95 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
|
|
96 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
66 | |
97 | |
67 | #include "ev.h" |
98 | #include "ev.h" |
|
|
99 | |
|
|
100 | #if __GNUC__ >= 3 |
|
|
101 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
102 | # define inline inline |
|
|
103 | #else |
|
|
104 | # define expect(expr,value) (expr) |
|
|
105 | # define inline static |
|
|
106 | #endif |
|
|
107 | |
|
|
108 | #define expect_false(expr) expect ((expr) != 0, 0) |
|
|
109 | #define expect_true(expr) expect ((expr) != 0, 1) |
|
|
110 | |
|
|
111 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
112 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
68 | |
113 | |
69 | typedef struct ev_watcher *W; |
114 | typedef struct ev_watcher *W; |
70 | typedef struct ev_watcher_list *WL; |
115 | typedef struct ev_watcher_list *WL; |
71 | typedef struct ev_watcher_time *WT; |
116 | typedef struct ev_watcher_time *WT; |
72 | |
117 | |
73 | static ev_tstamp now, diff; /* monotonic clock */ |
118 | static ev_tstamp now_floor, now, diff; /* monotonic clock */ |
74 | ev_tstamp ev_now; |
119 | ev_tstamp ev_now; |
75 | int ev_method; |
120 | int ev_method; |
76 | |
121 | |
77 | static int have_monotonic; /* runtime */ |
122 | static int have_monotonic; /* runtime */ |
78 | |
123 | |
… | |
… | |
83 | /*****************************************************************************/ |
128 | /*****************************************************************************/ |
84 | |
129 | |
85 | ev_tstamp |
130 | ev_tstamp |
86 | ev_time (void) |
131 | ev_time (void) |
87 | { |
132 | { |
88 | #if HAVE_REALTIME |
133 | #if EV_USE_REALTIME |
89 | struct timespec ts; |
134 | struct timespec ts; |
90 | clock_gettime (CLOCK_REALTIME, &ts); |
135 | clock_gettime (CLOCK_REALTIME, &ts); |
91 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
136 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
92 | #else |
137 | #else |
93 | struct timeval tv; |
138 | struct timeval tv; |
… | |
… | |
97 | } |
142 | } |
98 | |
143 | |
99 | static ev_tstamp |
144 | static ev_tstamp |
100 | get_clock (void) |
145 | get_clock (void) |
101 | { |
146 | { |
102 | #if HAVE_MONOTONIC |
147 | #if EV_USE_MONOTONIC |
103 | if (have_monotonic) |
148 | if (expect_true (have_monotonic)) |
104 | { |
149 | { |
105 | struct timespec ts; |
150 | struct timespec ts; |
106 | clock_gettime (CLOCK_MONOTONIC, &ts); |
151 | clock_gettime (CLOCK_MONOTONIC, &ts); |
107 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
152 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
108 | } |
153 | } |
109 | #endif |
154 | #endif |
110 | |
155 | |
111 | return ev_time (); |
156 | return ev_time (); |
112 | } |
157 | } |
113 | |
158 | |
|
|
159 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
|
|
160 | |
114 | #define array_needsize(base,cur,cnt,init) \ |
161 | #define array_needsize(base,cur,cnt,init) \ |
115 | if ((cnt) > cur) \ |
162 | if (expect_false ((cnt) > cur)) \ |
116 | { \ |
163 | { \ |
117 | int newcnt = cur ? cur << 1 : 16; \ |
164 | int newcnt = cur; \ |
|
|
165 | do \ |
|
|
166 | { \ |
|
|
167 | newcnt = array_roundsize (base, newcnt << 1); \ |
|
|
168 | } \ |
|
|
169 | while ((cnt) > newcnt); \ |
|
|
170 | \ |
118 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
171 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
119 | init (base + cur, newcnt - cur); \ |
172 | init (base + cur, newcnt - cur); \ |
120 | cur = newcnt; \ |
173 | cur = newcnt; \ |
121 | } |
174 | } |
122 | |
175 | |
123 | /*****************************************************************************/ |
176 | /*****************************************************************************/ |
124 | |
177 | |
125 | typedef struct |
178 | typedef struct |
126 | { |
179 | { |
127 | struct ev_io *head; |
180 | struct ev_io *head; |
128 | unsigned char wev, rev; /* want, received event set */ |
181 | unsigned char events; |
|
|
182 | unsigned char reify; |
129 | } ANFD; |
183 | } ANFD; |
130 | |
184 | |
131 | static ANFD *anfds; |
185 | static ANFD *anfds; |
132 | static int anfdmax; |
186 | static int anfdmax; |
133 | |
187 | |
134 | static int *fdchanges; |
|
|
135 | static int fdchangemax, fdchangecnt; |
|
|
136 | |
|
|
137 | static void |
188 | static void |
138 | anfds_init (ANFD *base, int count) |
189 | anfds_init (ANFD *base, int count) |
139 | { |
190 | { |
140 | while (count--) |
191 | while (count--) |
141 | { |
192 | { |
142 | base->head = 0; |
193 | base->head = 0; |
143 | base->wev = base->rev = EV_NONE; |
194 | base->events = EV_NONE; |
|
|
195 | base->reify = 0; |
|
|
196 | |
144 | ++base; |
197 | ++base; |
145 | } |
198 | } |
146 | } |
199 | } |
147 | |
200 | |
148 | typedef struct |
201 | typedef struct |
149 | { |
202 | { |
150 | W w; |
203 | W w; |
151 | int events; |
204 | int events; |
152 | } ANPENDING; |
205 | } ANPENDING; |
153 | |
206 | |
154 | static ANPENDING *pendings; |
207 | static ANPENDING *pendings [NUMPRI]; |
155 | static int pendingmax, pendingcnt; |
208 | static int pendingmax [NUMPRI], pendingcnt [NUMPRI]; |
156 | |
209 | |
157 | static void |
210 | static void |
158 | event (W w, int events) |
211 | event (W w, int events) |
159 | { |
212 | { |
160 | if (w->active) |
213 | if (w->pending) |
161 | { |
214 | { |
162 | w->pending = ++pendingcnt; |
|
|
163 | array_needsize (pendings, pendingmax, pendingcnt, ); |
|
|
164 | pendings [pendingcnt - 1].w = w; |
|
|
165 | pendings [pendingcnt - 1].events = events; |
215 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
|
|
216 | return; |
166 | } |
217 | } |
|
|
218 | |
|
|
219 | w->pending = ++pendingcnt [ABSPRI (w)]; |
|
|
220 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
|
|
221 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
|
|
222 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
|
|
223 | } |
|
|
224 | |
|
|
225 | static void |
|
|
226 | queue_events (W *events, int eventcnt, int type) |
|
|
227 | { |
|
|
228 | int i; |
|
|
229 | |
|
|
230 | for (i = 0; i < eventcnt; ++i) |
|
|
231 | event (events [i], type); |
167 | } |
232 | } |
168 | |
233 | |
169 | static void |
234 | static void |
170 | fd_event (int fd, int events) |
235 | fd_event (int fd, int events) |
171 | { |
236 | { |
… | |
… | |
179 | if (ev) |
244 | if (ev) |
180 | event ((W)w, ev); |
245 | event ((W)w, ev); |
181 | } |
246 | } |
182 | } |
247 | } |
183 | |
248 | |
|
|
249 | /*****************************************************************************/ |
|
|
250 | |
|
|
251 | static int *fdchanges; |
|
|
252 | static int fdchangemax, fdchangecnt; |
|
|
253 | |
184 | static void |
254 | static void |
185 | queue_events (W *events, int eventcnt, int type) |
255 | fd_reify (void) |
186 | { |
256 | { |
187 | int i; |
257 | int i; |
188 | |
258 | |
189 | for (i = 0; i < eventcnt; ++i) |
259 | for (i = 0; i < fdchangecnt; ++i) |
190 | event (events [i], type); |
260 | { |
|
|
261 | int fd = fdchanges [i]; |
|
|
262 | ANFD *anfd = anfds + fd; |
|
|
263 | struct ev_io *w; |
|
|
264 | |
|
|
265 | int events = 0; |
|
|
266 | |
|
|
267 | for (w = anfd->head; w; w = w->next) |
|
|
268 | events |= w->events; |
|
|
269 | |
|
|
270 | anfd->reify = 0; |
|
|
271 | |
|
|
272 | if (anfd->events != events) |
|
|
273 | { |
|
|
274 | method_modify (fd, anfd->events, events); |
|
|
275 | anfd->events = events; |
|
|
276 | } |
|
|
277 | } |
|
|
278 | |
|
|
279 | fdchangecnt = 0; |
|
|
280 | } |
|
|
281 | |
|
|
282 | static void |
|
|
283 | fd_change (int fd) |
|
|
284 | { |
|
|
285 | if (anfds [fd].reify || fdchangecnt < 0) |
|
|
286 | return; |
|
|
287 | |
|
|
288 | anfds [fd].reify = 1; |
|
|
289 | |
|
|
290 | ++fdchangecnt; |
|
|
291 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
292 | fdchanges [fdchangecnt - 1] = fd; |
|
|
293 | } |
|
|
294 | |
|
|
295 | static void |
|
|
296 | fd_kill (int fd) |
|
|
297 | { |
|
|
298 | struct ev_io *w; |
|
|
299 | |
|
|
300 | printf ("killing fd %d\n", fd);//D |
|
|
301 | while ((w = anfds [fd].head)) |
|
|
302 | { |
|
|
303 | ev_io_stop (w); |
|
|
304 | event ((W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
305 | } |
|
|
306 | } |
|
|
307 | |
|
|
308 | /* called on EBADF to verify fds */ |
|
|
309 | static void |
|
|
310 | fd_ebadf (void) |
|
|
311 | { |
|
|
312 | int fd; |
|
|
313 | |
|
|
314 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
315 | if (anfds [fd].events) |
|
|
316 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
|
|
317 | fd_kill (fd); |
|
|
318 | } |
|
|
319 | |
|
|
320 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
321 | static void |
|
|
322 | fd_enomem (void) |
|
|
323 | { |
|
|
324 | int fd = anfdmax; |
|
|
325 | |
|
|
326 | while (fd--) |
|
|
327 | if (anfds [fd].events) |
|
|
328 | { |
|
|
329 | close (fd); |
|
|
330 | fd_kill (fd); |
|
|
331 | return; |
|
|
332 | } |
191 | } |
333 | } |
192 | |
334 | |
193 | /*****************************************************************************/ |
335 | /*****************************************************************************/ |
194 | |
336 | |
195 | static struct ev_timer **timers; |
337 | static struct ev_timer **timers; |
… | |
… | |
242 | /*****************************************************************************/ |
384 | /*****************************************************************************/ |
243 | |
385 | |
244 | typedef struct |
386 | typedef struct |
245 | { |
387 | { |
246 | struct ev_signal *head; |
388 | struct ev_signal *head; |
247 | sig_atomic_t gotsig; |
389 | sig_atomic_t volatile gotsig; |
248 | } ANSIG; |
390 | } ANSIG; |
249 | |
391 | |
250 | static ANSIG *signals; |
392 | static ANSIG *signals; |
251 | static int signalmax; |
393 | static int signalmax; |
252 | |
394 | |
253 | static int sigpipe [2]; |
395 | static int sigpipe [2]; |
254 | static sig_atomic_t gotsig; |
396 | static sig_atomic_t volatile gotsig; |
255 | static struct ev_io sigev; |
397 | static struct ev_io sigev; |
256 | |
398 | |
257 | static void |
399 | static void |
258 | signals_init (ANSIG *base, int count) |
400 | signals_init (ANSIG *base, int count) |
259 | { |
401 | { |
260 | while (count--) |
402 | while (count--) |
261 | { |
403 | { |
262 | base->head = 0; |
404 | base->head = 0; |
263 | base->gotsig = 0; |
405 | base->gotsig = 0; |
|
|
406 | |
264 | ++base; |
407 | ++base; |
265 | } |
408 | } |
266 | } |
409 | } |
267 | |
410 | |
268 | static void |
411 | static void |
… | |
… | |
271 | signals [signum - 1].gotsig = 1; |
414 | signals [signum - 1].gotsig = 1; |
272 | |
415 | |
273 | if (!gotsig) |
416 | if (!gotsig) |
274 | { |
417 | { |
275 | gotsig = 1; |
418 | gotsig = 1; |
276 | write (sigpipe [1], &gotsig, 1); |
419 | write (sigpipe [1], &signum, 1); |
277 | } |
420 | } |
278 | } |
421 | } |
279 | |
422 | |
280 | static void |
423 | static void |
281 | sigcb (struct ev_io *iow, int revents) |
424 | sigcb (struct ev_io *iow, int revents) |
282 | { |
425 | { |
283 | struct ev_signal *w; |
426 | struct ev_signal *w; |
284 | int sig; |
427 | int signum; |
285 | |
428 | |
|
|
429 | read (sigpipe [0], &revents, 1); |
286 | gotsig = 0; |
430 | gotsig = 0; |
287 | read (sigpipe [0], &revents, 1); |
|
|
288 | |
431 | |
289 | for (sig = signalmax; sig--; ) |
432 | for (signum = signalmax; signum--; ) |
290 | if (signals [sig].gotsig) |
433 | if (signals [signum].gotsig) |
291 | { |
434 | { |
292 | signals [sig].gotsig = 0; |
435 | signals [signum].gotsig = 0; |
293 | |
436 | |
294 | for (w = signals [sig].head; w; w = w->next) |
437 | for (w = signals [signum].head; w; w = w->next) |
295 | event ((W)w, EV_SIGNAL); |
438 | event ((W)w, EV_SIGNAL); |
296 | } |
439 | } |
297 | } |
440 | } |
298 | |
441 | |
299 | static void |
442 | static void |
300 | siginit (void) |
443 | siginit (void) |
301 | { |
444 | { |
|
|
445 | #ifndef WIN32 |
302 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
446 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
303 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
447 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
304 | |
448 | |
305 | /* rather than sort out wether we really need nb, set it */ |
449 | /* rather than sort out wether we really need nb, set it */ |
306 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
450 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
307 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
451 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
452 | #endif |
308 | |
453 | |
309 | evio_set (&sigev, sigpipe [0], EV_READ); |
454 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
310 | evio_start (&sigev); |
455 | ev_io_start (&sigev); |
311 | } |
456 | } |
312 | |
457 | |
313 | /*****************************************************************************/ |
458 | /*****************************************************************************/ |
314 | |
459 | |
315 | static struct ev_idle **idles; |
460 | static struct ev_idle **idles; |
316 | static int idlemax, idlecnt; |
461 | static int idlemax, idlecnt; |
317 | |
462 | |
|
|
463 | static struct ev_prepare **prepares; |
|
|
464 | static int preparemax, preparecnt; |
|
|
465 | |
318 | static struct ev_check **checks; |
466 | static struct ev_check **checks; |
319 | static int checkmax, checkcnt; |
467 | static int checkmax, checkcnt; |
320 | |
468 | |
321 | /*****************************************************************************/ |
469 | /*****************************************************************************/ |
322 | |
470 | |
|
|
471 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
472 | static struct ev_signal childev; |
|
|
473 | |
|
|
474 | #ifndef WIN32 |
|
|
475 | |
|
|
476 | #ifndef WCONTINUED |
|
|
477 | # define WCONTINUED 0 |
|
|
478 | #endif |
|
|
479 | |
|
|
480 | static void |
|
|
481 | childcb (struct ev_signal *sw, int revents) |
|
|
482 | { |
|
|
483 | struct ev_child *w; |
|
|
484 | int pid, status; |
|
|
485 | |
|
|
486 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
|
|
487 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
|
|
488 | if (w->pid == pid || !w->pid) |
|
|
489 | { |
|
|
490 | w->status = status; |
|
|
491 | event ((W)w, EV_CHILD); |
|
|
492 | } |
|
|
493 | } |
|
|
494 | |
|
|
495 | #endif |
|
|
496 | |
|
|
497 | /*****************************************************************************/ |
|
|
498 | |
|
|
499 | #if EV_USE_KQUEUE |
|
|
500 | # include "ev_kqueue.c" |
|
|
501 | #endif |
323 | #if HAVE_EPOLL |
502 | #if EV_USE_EPOLL |
324 | # include "ev_epoll.c" |
503 | # include "ev_epoll.c" |
325 | #endif |
504 | #endif |
|
|
505 | #if EV_USE_POLL |
|
|
506 | # include "ev_poll.c" |
|
|
507 | #endif |
326 | #if HAVE_SELECT |
508 | #if EV_USE_SELECT |
327 | # include "ev_select.c" |
509 | # include "ev_select.c" |
328 | #endif |
510 | #endif |
329 | |
511 | |
|
|
512 | int |
|
|
513 | ev_version_major (void) |
|
|
514 | { |
|
|
515 | return EV_VERSION_MAJOR; |
|
|
516 | } |
|
|
517 | |
|
|
518 | int |
|
|
519 | ev_version_minor (void) |
|
|
520 | { |
|
|
521 | return EV_VERSION_MINOR; |
|
|
522 | } |
|
|
523 | |
|
|
524 | /* return true if we are running with elevated privileges and ignore env variables */ |
|
|
525 | static int |
|
|
526 | enable_secure () |
|
|
527 | { |
|
|
528 | return getuid () != geteuid () |
|
|
529 | || getgid () != getegid (); |
|
|
530 | } |
|
|
531 | |
330 | int ev_init (int flags) |
532 | int ev_init (int methods) |
331 | { |
533 | { |
332 | #if HAVE_MONOTONIC |
|
|
333 | { |
|
|
334 | struct timespec ts; |
|
|
335 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
336 | have_monotonic = 1; |
|
|
337 | } |
|
|
338 | #endif |
|
|
339 | |
|
|
340 | ev_now = ev_time (); |
|
|
341 | now = get_clock (); |
|
|
342 | diff = ev_now - now; |
|
|
343 | |
|
|
344 | if (pipe (sigpipe)) |
|
|
345 | return 0; |
|
|
346 | |
|
|
347 | ev_method = EVMETHOD_NONE; |
|
|
348 | #if HAVE_EPOLL |
|
|
349 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
350 | #endif |
|
|
351 | #if HAVE_SELECT |
|
|
352 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
353 | #endif |
|
|
354 | |
|
|
355 | if (ev_method) |
534 | if (!ev_method) |
|
|
535 | { |
|
|
536 | #if EV_USE_MONOTONIC |
356 | { |
537 | { |
|
|
538 | struct timespec ts; |
|
|
539 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
540 | have_monotonic = 1; |
|
|
541 | } |
|
|
542 | #endif |
|
|
543 | |
|
|
544 | ev_now = ev_time (); |
|
|
545 | now = get_clock (); |
|
|
546 | now_floor = now; |
|
|
547 | diff = ev_now - now; |
|
|
548 | |
|
|
549 | if (pipe (sigpipe)) |
|
|
550 | return 0; |
|
|
551 | |
|
|
552 | if (methods == EVMETHOD_AUTO) |
|
|
553 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
554 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
555 | else |
|
|
556 | methods = EVMETHOD_ANY; |
|
|
557 | |
|
|
558 | ev_method = 0; |
|
|
559 | #if EV_USE_KQUEUE |
|
|
560 | if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods); |
|
|
561 | #endif |
|
|
562 | #if EV_USE_EPOLL |
|
|
563 | if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods); |
|
|
564 | #endif |
|
|
565 | #if EV_USE_POLL |
|
|
566 | if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods); |
|
|
567 | #endif |
|
|
568 | #if EV_USE_SELECT |
|
|
569 | if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods); |
|
|
570 | #endif |
|
|
571 | |
|
|
572 | if (ev_method) |
|
|
573 | { |
357 | evw_init (&sigev, sigcb); |
574 | ev_watcher_init (&sigev, sigcb); |
358 | siginit (); |
575 | siginit (); |
|
|
576 | |
|
|
577 | #ifndef WIN32 |
|
|
578 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
579 | ev_signal_start (&childev); |
|
|
580 | #endif |
|
|
581 | } |
359 | } |
582 | } |
360 | |
583 | |
361 | return ev_method; |
584 | return ev_method; |
362 | } |
585 | } |
363 | |
586 | |
364 | /*****************************************************************************/ |
587 | /*****************************************************************************/ |
365 | |
588 | |
366 | void ev_prefork (void) |
589 | void |
|
|
590 | ev_fork_prepare (void) |
367 | { |
591 | { |
368 | /* nop */ |
592 | /* nop */ |
369 | } |
593 | } |
370 | |
594 | |
|
|
595 | void |
371 | void ev_postfork_parent (void) |
596 | ev_fork_parent (void) |
372 | { |
597 | { |
373 | /* nop */ |
598 | /* nop */ |
374 | } |
599 | } |
375 | |
600 | |
|
|
601 | void |
376 | void ev_postfork_child (void) |
602 | ev_fork_child (void) |
377 | { |
603 | { |
378 | #if HAVE_EPOLL |
604 | #if EV_USE_EPOLL |
379 | if (ev_method == EVMETHOD_EPOLL) |
605 | if (ev_method == EVMETHOD_EPOLL) |
380 | epoll_postfork_child (); |
606 | epoll_postfork_child (); |
381 | #endif |
607 | #endif |
382 | |
608 | |
383 | evio_stop (&sigev); |
609 | ev_io_stop (&sigev); |
384 | close (sigpipe [0]); |
610 | close (sigpipe [0]); |
385 | close (sigpipe [1]); |
611 | close (sigpipe [1]); |
386 | pipe (sigpipe); |
612 | pipe (sigpipe); |
387 | siginit (); |
613 | siginit (); |
388 | } |
614 | } |
389 | |
615 | |
390 | /*****************************************************************************/ |
616 | /*****************************************************************************/ |
391 | |
617 | |
392 | static void |
618 | static void |
393 | fd_reify (void) |
619 | call_pending (void) |
394 | { |
620 | { |
395 | int i; |
621 | int pri; |
396 | |
622 | |
397 | for (i = 0; i < fdchangecnt; ++i) |
623 | for (pri = NUMPRI; pri--; ) |
398 | { |
624 | while (pendingcnt [pri]) |
399 | int fd = fdchanges [i]; |
|
|
400 | ANFD *anfd = anfds + fd; |
|
|
401 | struct ev_io *w; |
|
|
402 | |
|
|
403 | int wev = 0; |
|
|
404 | |
|
|
405 | for (w = anfd->head; w; w = w->next) |
|
|
406 | wev |= w->events; |
|
|
407 | |
|
|
408 | if (anfd->wev != wev) |
|
|
409 | { |
625 | { |
410 | method_modify (fd, anfd->wev, wev); |
626 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
411 | anfd->wev = wev; |
|
|
412 | } |
|
|
413 | } |
|
|
414 | |
627 | |
415 | fdchangecnt = 0; |
|
|
416 | } |
|
|
417 | |
|
|
418 | static void |
|
|
419 | call_pending () |
|
|
420 | { |
|
|
421 | int i; |
|
|
422 | |
|
|
423 | for (i = 0; i < pendingcnt; ++i) |
|
|
424 | { |
|
|
425 | ANPENDING *p = pendings + i; |
|
|
426 | |
|
|
427 | if (p->w) |
628 | if (p->w) |
428 | { |
629 | { |
429 | p->w->pending = 0; |
630 | p->w->pending = 0; |
430 | p->w->cb (p->w, p->events); |
631 | p->w->cb (p->w, p->events); |
431 | } |
632 | } |
432 | } |
633 | } |
433 | |
|
|
434 | pendingcnt = 0; |
|
|
435 | } |
634 | } |
436 | |
635 | |
437 | static void |
636 | static void |
438 | timers_reify () |
637 | timers_reify (void) |
439 | { |
638 | { |
440 | while (timercnt && timers [0]->at <= now) |
639 | while (timercnt && timers [0]->at <= now) |
441 | { |
640 | { |
442 | struct ev_timer *w = timers [0]; |
641 | struct ev_timer *w = timers [0]; |
443 | |
|
|
444 | event ((W)w, EV_TIMEOUT); |
|
|
445 | |
642 | |
446 | /* first reschedule or stop timer */ |
643 | /* first reschedule or stop timer */ |
447 | if (w->repeat) |
644 | if (w->repeat) |
448 | { |
645 | { |
|
|
646 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
449 | w->at = now + w->repeat; |
647 | w->at = now + w->repeat; |
450 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
|
|
451 | downheap ((WT *)timers, timercnt, 0); |
648 | downheap ((WT *)timers, timercnt, 0); |
452 | } |
649 | } |
453 | else |
650 | else |
454 | evtimer_stop (w); /* nonrepeating: stop timer */ |
651 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
455 | } |
|
|
456 | } |
|
|
457 | |
652 | |
|
|
653 | event ((W)w, EV_TIMEOUT); |
|
|
654 | } |
|
|
655 | } |
|
|
656 | |
458 | static void |
657 | static void |
459 | periodics_reify () |
658 | periodics_reify (void) |
460 | { |
659 | { |
461 | while (periodiccnt && periodics [0]->at <= ev_now) |
660 | while (periodiccnt && periodics [0]->at <= ev_now) |
462 | { |
661 | { |
463 | struct ev_periodic *w = periodics [0]; |
662 | struct ev_periodic *w = periodics [0]; |
464 | |
663 | |
465 | /* first reschedule or stop timer */ |
664 | /* first reschedule or stop timer */ |
466 | if (w->interval) |
665 | if (w->interval) |
467 | { |
666 | { |
468 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
667 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
469 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
668 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
470 | downheap ((WT *)periodics, periodiccnt, 0); |
669 | downheap ((WT *)periodics, periodiccnt, 0); |
471 | } |
670 | } |
472 | else |
671 | else |
473 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
672 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
474 | |
673 | |
475 | event ((W)w, EV_TIMEOUT); |
674 | event ((W)w, EV_PERIODIC); |
476 | } |
675 | } |
477 | } |
676 | } |
478 | |
677 | |
479 | static void |
678 | static void |
480 | periodics_reschedule (ev_tstamp diff) |
679 | periodics_reschedule (ev_tstamp diff) |
… | |
… | |
490 | { |
689 | { |
491 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
690 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
492 | |
691 | |
493 | if (fabs (diff) >= 1e-4) |
692 | if (fabs (diff) >= 1e-4) |
494 | { |
693 | { |
495 | evperiodic_stop (w); |
694 | ev_periodic_stop (w); |
496 | evperiodic_start (w); |
695 | ev_periodic_start (w); |
497 | |
696 | |
498 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
697 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
499 | } |
698 | } |
500 | } |
699 | } |
501 | } |
700 | } |
502 | } |
701 | } |
503 | |
702 | |
504 | static void |
703 | static int |
|
|
704 | time_update_monotonic (void) |
|
|
705 | { |
|
|
706 | now = get_clock (); |
|
|
707 | |
|
|
708 | if (expect_true (now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
709 | { |
|
|
710 | ev_now = now + diff; |
|
|
711 | return 0; |
|
|
712 | } |
|
|
713 | else |
|
|
714 | { |
|
|
715 | now_floor = now; |
|
|
716 | ev_now = ev_time (); |
|
|
717 | return 1; |
|
|
718 | } |
|
|
719 | } |
|
|
720 | |
|
|
721 | static void |
505 | time_update () |
722 | time_update (void) |
506 | { |
723 | { |
507 | int i; |
724 | int i; |
508 | |
725 | |
509 | ev_now = ev_time (); |
726 | #if EV_USE_MONOTONIC |
510 | |
|
|
511 | if (have_monotonic) |
727 | if (expect_true (have_monotonic)) |
512 | { |
728 | { |
|
|
729 | if (time_update_monotonic ()) |
|
|
730 | { |
513 | ev_tstamp odiff = diff; |
731 | ev_tstamp odiff = diff; |
514 | |
732 | |
515 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
733 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
516 | { |
734 | { |
517 | now = get_clock (); |
|
|
518 | diff = ev_now - now; |
735 | diff = ev_now - now; |
519 | |
736 | |
520 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
737 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
521 | return; /* all is well */ |
738 | return; /* all is well */ |
522 | |
739 | |
523 | ev_now = ev_time (); |
740 | ev_now = ev_time (); |
|
|
741 | now = get_clock (); |
|
|
742 | now_floor = now; |
524 | } |
743 | } |
525 | |
744 | |
526 | periodics_reschedule (diff - odiff); |
745 | periodics_reschedule (diff - odiff); |
527 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
746 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
747 | } |
528 | } |
748 | } |
529 | else |
749 | else |
|
|
750 | #endif |
530 | { |
751 | { |
|
|
752 | ev_now = ev_time (); |
|
|
753 | |
531 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
754 | if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
532 | { |
755 | { |
533 | periodics_reschedule (ev_now - now); |
756 | periodics_reschedule (ev_now - now); |
534 | |
757 | |
535 | /* adjust timers. this is easy, as the offset is the same for all */ |
758 | /* adjust timers. this is easy, as the offset is the same for all */ |
536 | for (i = 0; i < timercnt; ++i) |
759 | for (i = 0; i < timercnt; ++i) |
… | |
… | |
544 | int ev_loop_done; |
767 | int ev_loop_done; |
545 | |
768 | |
546 | void ev_loop (int flags) |
769 | void ev_loop (int flags) |
547 | { |
770 | { |
548 | double block; |
771 | double block; |
549 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
772 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
550 | |
|
|
551 | if (checkcnt) |
|
|
552 | { |
|
|
553 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
554 | call_pending (); |
|
|
555 | } |
|
|
556 | |
773 | |
557 | do |
774 | do |
558 | { |
775 | { |
|
|
776 | /* queue check watchers (and execute them) */ |
|
|
777 | if (expect_false (preparecnt)) |
|
|
778 | { |
|
|
779 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
|
|
780 | call_pending (); |
|
|
781 | } |
|
|
782 | |
559 | /* update fd-related kernel structures */ |
783 | /* update fd-related kernel structures */ |
560 | fd_reify (); |
784 | fd_reify (); |
561 | |
785 | |
562 | /* calculate blocking time */ |
786 | /* calculate blocking time */ |
563 | |
787 | |
564 | /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
788 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
789 | always have timers, we just calculate it always */ |
|
|
790 | #if EV_USE_MONOTONIC |
|
|
791 | if (expect_true (have_monotonic)) |
|
|
792 | time_update_monotonic (); |
|
|
793 | else |
|
|
794 | #endif |
|
|
795 | { |
565 | ev_now = ev_time (); |
796 | ev_now = ev_time (); |
|
|
797 | now = ev_now; |
|
|
798 | } |
566 | |
799 | |
567 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
800 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
568 | block = 0.; |
801 | block = 0.; |
569 | else |
802 | else |
570 | { |
803 | { |
571 | block = MAX_BLOCKTIME; |
804 | block = MAX_BLOCKTIME; |
572 | |
805 | |
573 | if (timercnt) |
806 | if (timercnt) |
574 | { |
807 | { |
575 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
808 | ev_tstamp to = timers [0]->at - now + method_fudge; |
576 | if (block > to) block = to; |
809 | if (block > to) block = to; |
577 | } |
810 | } |
578 | |
811 | |
579 | if (periodiccnt) |
812 | if (periodiccnt) |
580 | { |
813 | { |
… | |
… | |
589 | |
822 | |
590 | /* update ev_now, do magic */ |
823 | /* update ev_now, do magic */ |
591 | time_update (); |
824 | time_update (); |
592 | |
825 | |
593 | /* queue pending timers and reschedule them */ |
826 | /* queue pending timers and reschedule them */ |
|
|
827 | timers_reify (); /* relative timers called last */ |
594 | periodics_reify (); /* absolute timers first */ |
828 | periodics_reify (); /* absolute timers called first */ |
595 | timers_reify (); /* relative timers second */ |
|
|
596 | |
829 | |
597 | /* queue idle watchers unless io or timers are pending */ |
830 | /* queue idle watchers unless io or timers are pending */ |
598 | if (!pendingcnt) |
831 | if (!pendingcnt) |
599 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
832 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
600 | |
833 | |
601 | /* queue check and possibly idle watchers */ |
834 | /* queue check watchers, to be executed first */ |
|
|
835 | if (checkcnt) |
602 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
836 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
603 | |
837 | |
604 | call_pending (); |
838 | call_pending (); |
605 | } |
839 | } |
606 | while (!ev_loop_done); |
840 | while (!ev_loop_done); |
607 | |
841 | |
… | |
… | |
632 | head = &(*head)->next; |
866 | head = &(*head)->next; |
633 | } |
867 | } |
634 | } |
868 | } |
635 | |
869 | |
636 | static void |
870 | static void |
637 | ev_clear (W w) |
871 | ev_clear_pending (W w) |
638 | { |
872 | { |
639 | if (w->pending) |
873 | if (w->pending) |
640 | { |
874 | { |
641 | pendings [w->pending - 1].w = 0; |
875 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
642 | w->pending = 0; |
876 | w->pending = 0; |
643 | } |
877 | } |
644 | } |
878 | } |
645 | |
879 | |
646 | static void |
880 | static void |
647 | ev_start (W w, int active) |
881 | ev_start (W w, int active) |
648 | { |
882 | { |
|
|
883 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
884 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
885 | |
649 | w->active = active; |
886 | w->active = active; |
650 | } |
887 | } |
651 | |
888 | |
652 | static void |
889 | static void |
653 | ev_stop (W w) |
890 | ev_stop (W w) |
… | |
… | |
656 | } |
893 | } |
657 | |
894 | |
658 | /*****************************************************************************/ |
895 | /*****************************************************************************/ |
659 | |
896 | |
660 | void |
897 | void |
661 | evio_start (struct ev_io *w) |
898 | ev_io_start (struct ev_io *w) |
662 | { |
899 | { |
|
|
900 | int fd = w->fd; |
|
|
901 | |
663 | if (ev_is_active (w)) |
902 | if (ev_is_active (w)) |
664 | return; |
903 | return; |
665 | |
904 | |
666 | int fd = w->fd; |
905 | assert (("ev_io_start called with negative fd", fd >= 0)); |
667 | |
906 | |
668 | ev_start ((W)w, 1); |
907 | ev_start ((W)w, 1); |
669 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
908 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
670 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
909 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
671 | |
910 | |
672 | ++fdchangecnt; |
911 | fd_change (fd); |
673 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
674 | fdchanges [fdchangecnt - 1] = fd; |
|
|
675 | } |
912 | } |
676 | |
913 | |
677 | void |
914 | void |
678 | evio_stop (struct ev_io *w) |
915 | ev_io_stop (struct ev_io *w) |
679 | { |
916 | { |
680 | ev_clear ((W)w); |
917 | ev_clear_pending ((W)w); |
681 | if (!ev_is_active (w)) |
918 | if (!ev_is_active (w)) |
682 | return; |
919 | return; |
683 | |
920 | |
684 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
921 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
685 | ev_stop ((W)w); |
922 | ev_stop ((W)w); |
686 | |
923 | |
687 | ++fdchangecnt; |
924 | fd_change (w->fd); |
688 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
689 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
690 | } |
925 | } |
691 | |
926 | |
692 | void |
927 | void |
693 | evtimer_start (struct ev_timer *w) |
928 | ev_timer_start (struct ev_timer *w) |
694 | { |
929 | { |
695 | if (ev_is_active (w)) |
930 | if (ev_is_active (w)) |
696 | return; |
931 | return; |
697 | |
932 | |
698 | w->at += now; |
933 | w->at += now; |
699 | |
934 | |
700 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
935 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
701 | |
936 | |
702 | ev_start ((W)w, ++timercnt); |
937 | ev_start ((W)w, ++timercnt); |
703 | array_needsize (timers, timermax, timercnt, ); |
938 | array_needsize (timers, timermax, timercnt, ); |
704 | timers [timercnt - 1] = w; |
939 | timers [timercnt - 1] = w; |
705 | upheap ((WT *)timers, timercnt - 1); |
940 | upheap ((WT *)timers, timercnt - 1); |
706 | } |
941 | } |
707 | |
942 | |
708 | void |
943 | void |
709 | evtimer_stop (struct ev_timer *w) |
944 | ev_timer_stop (struct ev_timer *w) |
710 | { |
945 | { |
711 | ev_clear ((W)w); |
946 | ev_clear_pending ((W)w); |
712 | if (!ev_is_active (w)) |
947 | if (!ev_is_active (w)) |
713 | return; |
948 | return; |
714 | |
949 | |
715 | if (w->active < timercnt--) |
950 | if (w->active < timercnt--) |
716 | { |
951 | { |
… | |
… | |
722 | |
957 | |
723 | ev_stop ((W)w); |
958 | ev_stop ((W)w); |
724 | } |
959 | } |
725 | |
960 | |
726 | void |
961 | void |
727 | evtimer_again (struct ev_timer *w) |
962 | ev_timer_again (struct ev_timer *w) |
728 | { |
963 | { |
729 | if (ev_is_active (w)) |
964 | if (ev_is_active (w)) |
730 | { |
965 | { |
731 | if (w->repeat) |
966 | if (w->repeat) |
732 | { |
967 | { |
733 | w->at = now + w->repeat; |
968 | w->at = now + w->repeat; |
734 | downheap ((WT *)timers, timercnt, w->active - 1); |
969 | downheap ((WT *)timers, timercnt, w->active - 1); |
735 | } |
970 | } |
736 | else |
971 | else |
737 | evtimer_stop (w); |
972 | ev_timer_stop (w); |
738 | } |
973 | } |
739 | else if (w->repeat) |
974 | else if (w->repeat) |
740 | evtimer_start (w); |
975 | ev_timer_start (w); |
741 | } |
976 | } |
742 | |
977 | |
743 | void |
978 | void |
744 | evperiodic_start (struct ev_periodic *w) |
979 | ev_periodic_start (struct ev_periodic *w) |
745 | { |
980 | { |
746 | if (ev_is_active (w)) |
981 | if (ev_is_active (w)) |
747 | return; |
982 | return; |
748 | |
983 | |
749 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
984 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
750 | |
985 | |
751 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
986 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
752 | if (w->interval) |
987 | if (w->interval) |
753 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
988 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
754 | |
989 | |
… | |
… | |
757 | periodics [periodiccnt - 1] = w; |
992 | periodics [periodiccnt - 1] = w; |
758 | upheap ((WT *)periodics, periodiccnt - 1); |
993 | upheap ((WT *)periodics, periodiccnt - 1); |
759 | } |
994 | } |
760 | |
995 | |
761 | void |
996 | void |
762 | evperiodic_stop (struct ev_periodic *w) |
997 | ev_periodic_stop (struct ev_periodic *w) |
763 | { |
998 | { |
764 | ev_clear ((W)w); |
999 | ev_clear_pending ((W)w); |
765 | if (!ev_is_active (w)) |
1000 | if (!ev_is_active (w)) |
766 | return; |
1001 | return; |
767 | |
1002 | |
768 | if (w->active < periodiccnt--) |
1003 | if (w->active < periodiccnt--) |
769 | { |
1004 | { |
… | |
… | |
773 | |
1008 | |
774 | ev_stop ((W)w); |
1009 | ev_stop ((W)w); |
775 | } |
1010 | } |
776 | |
1011 | |
777 | void |
1012 | void |
778 | evsignal_start (struct ev_signal *w) |
1013 | ev_signal_start (struct ev_signal *w) |
779 | { |
1014 | { |
780 | if (ev_is_active (w)) |
1015 | if (ev_is_active (w)) |
781 | return; |
1016 | return; |
|
|
1017 | |
|
|
1018 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
782 | |
1019 | |
783 | ev_start ((W)w, 1); |
1020 | ev_start ((W)w, 1); |
784 | array_needsize (signals, signalmax, w->signum, signals_init); |
1021 | array_needsize (signals, signalmax, w->signum, signals_init); |
785 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1022 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
786 | |
1023 | |
… | |
… | |
793 | sigaction (w->signum, &sa, 0); |
1030 | sigaction (w->signum, &sa, 0); |
794 | } |
1031 | } |
795 | } |
1032 | } |
796 | |
1033 | |
797 | void |
1034 | void |
798 | evsignal_stop (struct ev_signal *w) |
1035 | ev_signal_stop (struct ev_signal *w) |
799 | { |
1036 | { |
800 | ev_clear ((W)w); |
1037 | ev_clear_pending ((W)w); |
801 | if (!ev_is_active (w)) |
1038 | if (!ev_is_active (w)) |
802 | return; |
1039 | return; |
803 | |
1040 | |
804 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1041 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
805 | ev_stop ((W)w); |
1042 | ev_stop ((W)w); |
806 | |
1043 | |
807 | if (!signals [w->signum - 1].head) |
1044 | if (!signals [w->signum - 1].head) |
808 | signal (w->signum, SIG_DFL); |
1045 | signal (w->signum, SIG_DFL); |
809 | } |
1046 | } |
810 | |
1047 | |
|
|
1048 | void |
811 | void evidle_start (struct ev_idle *w) |
1049 | ev_idle_start (struct ev_idle *w) |
812 | { |
1050 | { |
813 | if (ev_is_active (w)) |
1051 | if (ev_is_active (w)) |
814 | return; |
1052 | return; |
815 | |
1053 | |
816 | ev_start ((W)w, ++idlecnt); |
1054 | ev_start ((W)w, ++idlecnt); |
817 | array_needsize (idles, idlemax, idlecnt, ); |
1055 | array_needsize (idles, idlemax, idlecnt, ); |
818 | idles [idlecnt - 1] = w; |
1056 | idles [idlecnt - 1] = w; |
819 | } |
1057 | } |
820 | |
1058 | |
|
|
1059 | void |
821 | void evidle_stop (struct ev_idle *w) |
1060 | ev_idle_stop (struct ev_idle *w) |
822 | { |
1061 | { |
823 | ev_clear ((W)w); |
1062 | ev_clear_pending ((W)w); |
824 | if (ev_is_active (w)) |
1063 | if (ev_is_active (w)) |
825 | return; |
1064 | return; |
826 | |
1065 | |
827 | idles [w->active - 1] = idles [--idlecnt]; |
1066 | idles [w->active - 1] = idles [--idlecnt]; |
828 | ev_stop ((W)w); |
1067 | ev_stop ((W)w); |
829 | } |
1068 | } |
830 | |
1069 | |
|
|
1070 | void |
|
|
1071 | ev_prepare_start (struct ev_prepare *w) |
|
|
1072 | { |
|
|
1073 | if (ev_is_active (w)) |
|
|
1074 | return; |
|
|
1075 | |
|
|
1076 | ev_start ((W)w, ++preparecnt); |
|
|
1077 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1078 | prepares [preparecnt - 1] = w; |
|
|
1079 | } |
|
|
1080 | |
|
|
1081 | void |
|
|
1082 | ev_prepare_stop (struct ev_prepare *w) |
|
|
1083 | { |
|
|
1084 | ev_clear_pending ((W)w); |
|
|
1085 | if (ev_is_active (w)) |
|
|
1086 | return; |
|
|
1087 | |
|
|
1088 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
1089 | ev_stop ((W)w); |
|
|
1090 | } |
|
|
1091 | |
|
|
1092 | void |
831 | void evcheck_start (struct ev_check *w) |
1093 | ev_check_start (struct ev_check *w) |
832 | { |
1094 | { |
833 | if (ev_is_active (w)) |
1095 | if (ev_is_active (w)) |
834 | return; |
1096 | return; |
835 | |
1097 | |
836 | ev_start ((W)w, ++checkcnt); |
1098 | ev_start ((W)w, ++checkcnt); |
837 | array_needsize (checks, checkmax, checkcnt, ); |
1099 | array_needsize (checks, checkmax, checkcnt, ); |
838 | checks [checkcnt - 1] = w; |
1100 | checks [checkcnt - 1] = w; |
839 | } |
1101 | } |
840 | |
1102 | |
|
|
1103 | void |
841 | void evcheck_stop (struct ev_check *w) |
1104 | ev_check_stop (struct ev_check *w) |
842 | { |
1105 | { |
843 | ev_clear ((W)w); |
1106 | ev_clear_pending ((W)w); |
844 | if (ev_is_active (w)) |
1107 | if (ev_is_active (w)) |
845 | return; |
1108 | return; |
846 | |
1109 | |
847 | checks [w->active - 1] = checks [--checkcnt]; |
1110 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
1111 | ev_stop ((W)w); |
|
|
1112 | } |
|
|
1113 | |
|
|
1114 | void |
|
|
1115 | ev_child_start (struct ev_child *w) |
|
|
1116 | { |
|
|
1117 | if (ev_is_active (w)) |
|
|
1118 | return; |
|
|
1119 | |
|
|
1120 | ev_start ((W)w, 1); |
|
|
1121 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1122 | } |
|
|
1123 | |
|
|
1124 | void |
|
|
1125 | ev_child_stop (struct ev_child *w) |
|
|
1126 | { |
|
|
1127 | ev_clear_pending ((W)w); |
|
|
1128 | if (ev_is_active (w)) |
|
|
1129 | return; |
|
|
1130 | |
|
|
1131 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
848 | ev_stop ((W)w); |
1132 | ev_stop ((W)w); |
849 | } |
1133 | } |
850 | |
1134 | |
851 | /*****************************************************************************/ |
1135 | /*****************************************************************************/ |
852 | |
1136 | |
… | |
… | |
862 | once_cb (struct ev_once *once, int revents) |
1146 | once_cb (struct ev_once *once, int revents) |
863 | { |
1147 | { |
864 | void (*cb)(int revents, void *arg) = once->cb; |
1148 | void (*cb)(int revents, void *arg) = once->cb; |
865 | void *arg = once->arg; |
1149 | void *arg = once->arg; |
866 | |
1150 | |
867 | evio_stop (&once->io); |
1151 | ev_io_stop (&once->io); |
868 | evtimer_stop (&once->to); |
1152 | ev_timer_stop (&once->to); |
869 | free (once); |
1153 | free (once); |
870 | |
1154 | |
871 | cb (revents, arg); |
1155 | cb (revents, arg); |
872 | } |
1156 | } |
873 | |
1157 | |
… | |
… | |
887 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1171 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
888 | { |
1172 | { |
889 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1173 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
890 | |
1174 | |
891 | if (!once) |
1175 | if (!once) |
892 | cb (EV_ERROR, arg); |
1176 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
893 | else |
1177 | else |
894 | { |
1178 | { |
895 | once->cb = cb; |
1179 | once->cb = cb; |
896 | once->arg = arg; |
1180 | once->arg = arg; |
897 | |
1181 | |
898 | evw_init (&once->io, once_cb_io); |
1182 | ev_watcher_init (&once->io, once_cb_io); |
899 | |
|
|
900 | if (fd >= 0) |
1183 | if (fd >= 0) |
901 | { |
1184 | { |
902 | evio_set (&once->io, fd, events); |
1185 | ev_io_set (&once->io, fd, events); |
903 | evio_start (&once->io); |
1186 | ev_io_start (&once->io); |
904 | } |
1187 | } |
905 | |
1188 | |
906 | evw_init (&once->to, once_cb_to); |
1189 | ev_watcher_init (&once->to, once_cb_to); |
907 | |
|
|
908 | if (timeout >= 0.) |
1190 | if (timeout >= 0.) |
909 | { |
1191 | { |
910 | evtimer_set (&once->to, timeout, 0.); |
1192 | ev_timer_set (&once->to, timeout, 0.); |
911 | evtimer_start (&once->to); |
1193 | ev_timer_start (&once->to); |
912 | } |
1194 | } |
913 | } |
1195 | } |
914 | } |
1196 | } |
915 | |
1197 | |
916 | /*****************************************************************************/ |
1198 | /*****************************************************************************/ |
… | |
… | |
927 | |
1209 | |
928 | static void |
1210 | static void |
929 | ocb (struct ev_timer *w, int revents) |
1211 | ocb (struct ev_timer *w, int revents) |
930 | { |
1212 | { |
931 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
1213 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
932 | evtimer_stop (w); |
1214 | ev_timer_stop (w); |
933 | evtimer_start (w); |
1215 | ev_timer_start (w); |
934 | } |
1216 | } |
935 | |
1217 | |
936 | static void |
1218 | static void |
937 | scb (struct ev_signal *w, int revents) |
1219 | scb (struct ev_signal *w, int revents) |
938 | { |
1220 | { |
939 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
1221 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
940 | evio_stop (&wio); |
1222 | ev_io_stop (&wio); |
941 | evio_start (&wio); |
1223 | ev_io_start (&wio); |
942 | } |
1224 | } |
943 | |
1225 | |
944 | static void |
1226 | static void |
945 | gcb (struct ev_signal *w, int revents) |
1227 | gcb (struct ev_signal *w, int revents) |
946 | { |
1228 | { |
… | |
… | |
950 | |
1232 | |
951 | int main (void) |
1233 | int main (void) |
952 | { |
1234 | { |
953 | ev_init (0); |
1235 | ev_init (0); |
954 | |
1236 | |
955 | evio_init (&wio, sin_cb, 0, EV_READ); |
1237 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
956 | evio_start (&wio); |
1238 | ev_io_start (&wio); |
957 | |
1239 | |
958 | struct ev_timer t[10000]; |
1240 | struct ev_timer t[10000]; |
959 | |
1241 | |
960 | #if 0 |
1242 | #if 0 |
961 | int i; |
1243 | int i; |
962 | for (i = 0; i < 10000; ++i) |
1244 | for (i = 0; i < 10000; ++i) |
963 | { |
1245 | { |
964 | struct ev_timer *w = t + i; |
1246 | struct ev_timer *w = t + i; |
965 | evw_init (w, ocb, i); |
1247 | ev_watcher_init (w, ocb, i); |
966 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
1248 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
967 | evtimer_start (w); |
1249 | ev_timer_start (w); |
968 | if (drand48 () < 0.5) |
1250 | if (drand48 () < 0.5) |
969 | evtimer_stop (w); |
1251 | ev_timer_stop (w); |
970 | } |
1252 | } |
971 | #endif |
1253 | #endif |
972 | |
1254 | |
973 | struct ev_timer t1; |
1255 | struct ev_timer t1; |
974 | evtimer_init (&t1, ocb, 5, 10); |
1256 | ev_timer_init (&t1, ocb, 5, 10); |
975 | evtimer_start (&t1); |
1257 | ev_timer_start (&t1); |
976 | |
1258 | |
977 | struct ev_signal sig; |
1259 | struct ev_signal sig; |
978 | evsignal_init (&sig, scb, SIGQUIT); |
1260 | ev_signal_init (&sig, scb, SIGQUIT); |
979 | evsignal_start (&sig); |
1261 | ev_signal_start (&sig); |
980 | |
1262 | |
981 | struct ev_check cw; |
1263 | struct ev_check cw; |
982 | evcheck_init (&cw, gcb); |
1264 | ev_check_init (&cw, gcb); |
983 | evcheck_start (&cw); |
1265 | ev_check_start (&cw); |
984 | |
1266 | |
985 | struct ev_idle iw; |
1267 | struct ev_idle iw; |
986 | evidle_init (&iw, gcb); |
1268 | ev_idle_init (&iw, gcb); |
987 | evidle_start (&iw); |
1269 | ev_idle_start (&iw); |
988 | |
1270 | |
989 | ev_loop (0); |
1271 | ev_loop (0); |
990 | |
1272 | |
991 | return 0; |
1273 | return 0; |
992 | } |
1274 | } |