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 | #ifndef EV_STANDALONE |
|
|
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 | |
|
|
53 | /**/ |
|
|
54 | |
44 | #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_USEV_POLL |
|
|
64 | # define EV_USEV_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 | |
45 | # ifdef CLOCK_MONOTONIC |
81 | #ifndef CLOCK_MONOTONIC |
|
|
82 | # undef EV_USE_MONOTONIC |
46 | # define HAVE_MONOTONIC 1 |
83 | # define EV_USE_MONOTONIC 0 |
47 | # endif |
84 | #endif |
48 | #endif |
|
|
49 | |
85 | |
50 | #ifndef HAVE_SELECT |
|
|
51 | # define HAVE_SELECT 1 |
|
|
52 | #endif |
|
|
53 | |
|
|
54 | #ifndef HAVE_EPOLL |
|
|
55 | # define HAVE_EPOLL 0 |
|
|
56 | #endif |
|
|
57 | |
|
|
58 | #ifndef HAVE_REALTIME |
86 | #ifndef CLOCK_REALTIME |
59 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
87 | # undef EV_USE_REALTIME |
|
|
88 | # define EV_USE_REALTIME 0 |
60 | #endif |
89 | #endif |
|
|
90 | |
|
|
91 | /**/ |
61 | |
92 | |
62 | #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) */ |
63 | #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 */ |
64 | |
97 | |
65 | #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) |
66 | |
113 | |
67 | typedef struct ev_watcher *W; |
114 | typedef struct ev_watcher *W; |
68 | typedef struct ev_watcher_list *WL; |
115 | typedef struct ev_watcher_list *WL; |
69 | typedef struct ev_watcher_time *WT; |
116 | typedef struct ev_watcher_time *WT; |
70 | |
117 | |
71 | static ev_tstamp now, diff; /* monotonic clock */ |
118 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
72 | ev_tstamp ev_now; |
|
|
73 | int ev_method; |
|
|
74 | |
|
|
75 | static int have_monotonic; /* runtime */ |
|
|
76 | |
|
|
77 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
|
|
78 | static void (*method_modify)(int fd, int oev, int nev); |
|
|
79 | static void (*method_poll)(ev_tstamp timeout); |
|
|
80 | |
119 | |
81 | /*****************************************************************************/ |
120 | /*****************************************************************************/ |
82 | |
121 | |
83 | ev_tstamp |
122 | typedef struct |
|
|
123 | { |
|
|
124 | struct ev_watcher_list *head; |
|
|
125 | unsigned char events; |
|
|
126 | unsigned char reify; |
|
|
127 | } ANFD; |
|
|
128 | |
|
|
129 | typedef struct |
|
|
130 | { |
|
|
131 | W w; |
|
|
132 | int events; |
|
|
133 | } ANPENDING; |
|
|
134 | |
|
|
135 | #if EV_MULTIPLICITY |
|
|
136 | |
|
|
137 | struct ev_loop |
|
|
138 | { |
|
|
139 | # define VAR(name,decl) decl; |
|
|
140 | # include "ev_vars.h" |
|
|
141 | }; |
|
|
142 | # undef VAR |
|
|
143 | # include "ev_wrap.h" |
|
|
144 | |
|
|
145 | #else |
|
|
146 | |
|
|
147 | # define VAR(name,decl) static decl; |
|
|
148 | # include "ev_vars.h" |
|
|
149 | # undef VAR |
|
|
150 | |
|
|
151 | #endif |
|
|
152 | |
|
|
153 | /*****************************************************************************/ |
|
|
154 | |
|
|
155 | inline ev_tstamp |
84 | ev_time (void) |
156 | ev_time (void) |
85 | { |
157 | { |
86 | #if HAVE_REALTIME |
158 | #if EV_USE_REALTIME |
87 | struct timespec ts; |
159 | struct timespec ts; |
88 | clock_gettime (CLOCK_REALTIME, &ts); |
160 | clock_gettime (CLOCK_REALTIME, &ts); |
89 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
161 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
90 | #else |
162 | #else |
91 | struct timeval tv; |
163 | struct timeval tv; |
92 | gettimeofday (&tv, 0); |
164 | gettimeofday (&tv, 0); |
93 | return tv.tv_sec + tv.tv_usec * 1e-6; |
165 | return tv.tv_sec + tv.tv_usec * 1e-6; |
94 | #endif |
166 | #endif |
95 | } |
167 | } |
96 | |
168 | |
97 | static ev_tstamp |
169 | inline ev_tstamp |
98 | get_clock (void) |
170 | get_clock (void) |
99 | { |
171 | { |
100 | #if HAVE_MONOTONIC |
172 | #if EV_USE_MONOTONIC |
101 | if (have_monotonic) |
173 | if (expect_true (have_monotonic)) |
102 | { |
174 | { |
103 | struct timespec ts; |
175 | struct timespec ts; |
104 | clock_gettime (CLOCK_MONOTONIC, &ts); |
176 | clock_gettime (CLOCK_MONOTONIC, &ts); |
105 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
177 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
106 | } |
178 | } |
107 | #endif |
179 | #endif |
108 | |
180 | |
109 | return ev_time (); |
181 | return ev_time (); |
110 | } |
182 | } |
111 | |
183 | |
|
|
184 | ev_tstamp |
|
|
185 | ev_now (EV_P) |
|
|
186 | { |
|
|
187 | return rt_now; |
|
|
188 | } |
|
|
189 | |
|
|
190 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
|
|
191 | |
112 | #define array_needsize(base,cur,cnt,init) \ |
192 | #define array_needsize(base,cur,cnt,init) \ |
113 | if ((cnt) > cur) \ |
193 | if (expect_false ((cnt) > cur)) \ |
114 | { \ |
194 | { \ |
115 | int newcnt = cur ? cur << 1 : 16; \ |
195 | int newcnt = cur; \ |
|
|
196 | do \ |
|
|
197 | { \ |
|
|
198 | newcnt = array_roundsize (base, newcnt << 1); \ |
|
|
199 | } \ |
|
|
200 | while ((cnt) > newcnt); \ |
|
|
201 | \ |
116 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
202 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
117 | init (base + cur, newcnt - cur); \ |
203 | init (base + cur, newcnt - cur); \ |
118 | cur = newcnt; \ |
204 | cur = newcnt; \ |
119 | } |
205 | } |
120 | |
206 | |
121 | /*****************************************************************************/ |
207 | /*****************************************************************************/ |
122 | |
208 | |
123 | typedef struct |
|
|
124 | { |
|
|
125 | struct ev_io *head; |
|
|
126 | unsigned char wev, rev; /* want, received event set */ |
|
|
127 | } ANFD; |
|
|
128 | |
|
|
129 | static ANFD *anfds; |
|
|
130 | static int anfdmax; |
|
|
131 | |
|
|
132 | static int *fdchanges; |
|
|
133 | static int fdchangemax, fdchangecnt; |
|
|
134 | |
|
|
135 | static void |
209 | static void |
136 | anfds_init (ANFD *base, int count) |
210 | anfds_init (ANFD *base, int count) |
137 | { |
211 | { |
138 | while (count--) |
212 | while (count--) |
139 | { |
213 | { |
140 | base->head = 0; |
214 | base->head = 0; |
141 | base->wev = base->rev = EV_NONE; |
215 | base->events = EV_NONE; |
|
|
216 | base->reify = 0; |
|
|
217 | |
142 | ++base; |
218 | ++base; |
143 | } |
219 | } |
144 | } |
220 | } |
145 | |
221 | |
146 | typedef struct |
|
|
147 | { |
|
|
148 | W w; |
|
|
149 | int events; |
|
|
150 | } ANPENDING; |
|
|
151 | |
|
|
152 | static ANPENDING *pendings; |
|
|
153 | static int pendingmax, pendingcnt; |
|
|
154 | |
|
|
155 | static void |
222 | static void |
156 | event (W w, int events) |
223 | event (EV_P_ W w, int events) |
157 | { |
224 | { |
158 | if (w->active) |
225 | if (w->pending) |
159 | { |
226 | { |
160 | w->pending = ++pendingcnt; |
|
|
161 | array_needsize (pendings, pendingmax, pendingcnt, ); |
|
|
162 | pendings [pendingcnt - 1].w = w; |
|
|
163 | pendings [pendingcnt - 1].events = events; |
227 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
|
|
228 | return; |
164 | } |
229 | } |
165 | } |
|
|
166 | |
230 | |
|
|
231 | w->pending = ++pendingcnt [ABSPRI (w)]; |
|
|
232 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
|
|
233 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
|
|
234 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
|
|
235 | } |
|
|
236 | |
167 | static void |
237 | static void |
|
|
238 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
239 | { |
|
|
240 | int i; |
|
|
241 | |
|
|
242 | for (i = 0; i < eventcnt; ++i) |
|
|
243 | event (EV_A_ events [i], type); |
|
|
244 | } |
|
|
245 | |
|
|
246 | static void |
168 | fd_event (int fd, int events) |
247 | fd_event (EV_P_ int fd, int events) |
169 | { |
248 | { |
170 | ANFD *anfd = anfds + fd; |
249 | ANFD *anfd = anfds + fd; |
171 | struct ev_io *w; |
250 | struct ev_io *w; |
172 | |
251 | |
173 | for (w = anfd->head; w; w = w->next) |
252 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
174 | { |
253 | { |
175 | int ev = w->events & events; |
254 | int ev = w->events & events; |
176 | |
255 | |
177 | if (ev) |
256 | if (ev) |
178 | event ((W)w, ev); |
257 | event (EV_A_ (W)w, ev); |
179 | } |
258 | } |
180 | } |
259 | } |
181 | |
260 | |
|
|
261 | /*****************************************************************************/ |
|
|
262 | |
182 | static void |
263 | static void |
183 | queue_events (W *events, int eventcnt, int type) |
264 | fd_reify (EV_P) |
184 | { |
265 | { |
185 | int i; |
266 | int i; |
186 | |
267 | |
187 | for (i = 0; i < eventcnt; ++i) |
268 | for (i = 0; i < fdchangecnt; ++i) |
188 | event (events [i], type); |
269 | { |
|
|
270 | int fd = fdchanges [i]; |
|
|
271 | ANFD *anfd = anfds + fd; |
|
|
272 | struct ev_io *w; |
|
|
273 | |
|
|
274 | int events = 0; |
|
|
275 | |
|
|
276 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
|
|
277 | events |= w->events; |
|
|
278 | |
|
|
279 | anfd->reify = 0; |
|
|
280 | |
|
|
281 | if (anfd->events != events) |
|
|
282 | { |
|
|
283 | method_modify (EV_A_ fd, anfd->events, events); |
|
|
284 | anfd->events = events; |
|
|
285 | } |
|
|
286 | } |
|
|
287 | |
|
|
288 | fdchangecnt = 0; |
|
|
289 | } |
|
|
290 | |
|
|
291 | static void |
|
|
292 | fd_change (EV_P_ int fd) |
|
|
293 | { |
|
|
294 | if (anfds [fd].reify || fdchangecnt < 0) |
|
|
295 | return; |
|
|
296 | |
|
|
297 | anfds [fd].reify = 1; |
|
|
298 | |
|
|
299 | ++fdchangecnt; |
|
|
300 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
301 | fdchanges [fdchangecnt - 1] = fd; |
|
|
302 | } |
|
|
303 | |
|
|
304 | static void |
|
|
305 | fd_kill (EV_P_ int fd) |
|
|
306 | { |
|
|
307 | struct ev_io *w; |
|
|
308 | |
|
|
309 | while ((w = (struct ev_io *)anfds [fd].head)) |
|
|
310 | { |
|
|
311 | ev_io_stop (EV_A_ w); |
|
|
312 | event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
313 | } |
189 | } |
314 | } |
190 | |
315 | |
191 | /* called on EBADF to verify fds */ |
316 | /* called on EBADF to verify fds */ |
192 | static void |
317 | static void |
193 | fd_recheck () |
318 | fd_ebadf (EV_P) |
194 | { |
319 | { |
195 | int fd; |
320 | int fd; |
196 | |
321 | |
197 | for (fd = 0; fd < anfdmax; ++fd) |
322 | for (fd = 0; fd < anfdmax; ++fd) |
198 | if (anfds [fd].wev) |
323 | if (anfds [fd].events) |
199 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
324 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
200 | while (anfds [fd].head) |
325 | fd_kill (EV_A_ fd); |
201 | evio_stop (anfds [fd].head); |
326 | } |
|
|
327 | |
|
|
328 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
329 | static void |
|
|
330 | fd_enomem (EV_P) |
|
|
331 | { |
|
|
332 | int fd = anfdmax; |
|
|
333 | |
|
|
334 | while (fd--) |
|
|
335 | if (anfds [fd].events) |
|
|
336 | { |
|
|
337 | close (fd); |
|
|
338 | fd_kill (EV_A_ fd); |
|
|
339 | return; |
|
|
340 | } |
|
|
341 | } |
|
|
342 | |
|
|
343 | /* susually called after fork if method needs to re-arm all fds from scratch */ |
|
|
344 | static void |
|
|
345 | fd_rearm_all (EV_P) |
|
|
346 | { |
|
|
347 | int fd; |
|
|
348 | |
|
|
349 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
350 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
351 | if (anfds [fd].events) |
|
|
352 | { |
|
|
353 | anfds [fd].events = 0; |
|
|
354 | fd_change (fd); |
|
|
355 | } |
202 | } |
356 | } |
203 | |
357 | |
204 | /*****************************************************************************/ |
358 | /*****************************************************************************/ |
205 | |
359 | |
206 | static struct ev_timer **timers; |
|
|
207 | static int timermax, timercnt; |
|
|
208 | |
|
|
209 | static struct ev_periodic **periodics; |
|
|
210 | static int periodicmax, periodiccnt; |
|
|
211 | |
|
|
212 | static void |
360 | static void |
213 | upheap (WT *timers, int k) |
361 | upheap (WT *heap, int k) |
214 | { |
362 | { |
215 | WT w = timers [k]; |
363 | WT w = heap [k]; |
216 | |
364 | |
217 | while (k && timers [k >> 1]->at > w->at) |
365 | while (k && heap [k >> 1]->at > w->at) |
218 | { |
366 | { |
219 | timers [k] = timers [k >> 1]; |
367 | heap [k] = heap [k >> 1]; |
220 | timers [k]->active = k + 1; |
368 | heap [k]->active = k + 1; |
221 | k >>= 1; |
369 | k >>= 1; |
222 | } |
370 | } |
223 | |
371 | |
224 | timers [k] = w; |
372 | heap [k] = w; |
225 | timers [k]->active = k + 1; |
373 | heap [k]->active = k + 1; |
226 | |
374 | |
227 | } |
375 | } |
228 | |
376 | |
229 | static void |
377 | static void |
230 | downheap (WT *timers, int N, int k) |
378 | downheap (WT *heap, int N, int k) |
231 | { |
379 | { |
232 | WT w = timers [k]; |
380 | WT w = heap [k]; |
233 | |
381 | |
234 | while (k < (N >> 1)) |
382 | while (k < (N >> 1)) |
235 | { |
383 | { |
236 | int j = k << 1; |
384 | int j = k << 1; |
237 | |
385 | |
238 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
386 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
239 | ++j; |
387 | ++j; |
240 | |
388 | |
241 | if (w->at <= timers [j]->at) |
389 | if (w->at <= heap [j]->at) |
242 | break; |
390 | break; |
243 | |
391 | |
244 | timers [k] = timers [j]; |
392 | heap [k] = heap [j]; |
245 | timers [k]->active = k + 1; |
393 | heap [k]->active = k + 1; |
246 | k = j; |
394 | k = j; |
247 | } |
395 | } |
248 | |
396 | |
249 | timers [k] = w; |
397 | heap [k] = w; |
250 | timers [k]->active = k + 1; |
398 | heap [k]->active = k + 1; |
251 | } |
399 | } |
252 | |
400 | |
253 | /*****************************************************************************/ |
401 | /*****************************************************************************/ |
254 | |
402 | |
255 | typedef struct |
403 | typedef struct |
256 | { |
404 | { |
257 | struct ev_signal *head; |
405 | struct ev_watcher_list *head; |
258 | sig_atomic_t gotsig; |
406 | sig_atomic_t volatile gotsig; |
259 | } ANSIG; |
407 | } ANSIG; |
260 | |
408 | |
261 | static ANSIG *signals; |
409 | static ANSIG *signals; |
262 | static int signalmax; |
410 | static int signalmax; |
263 | |
411 | |
264 | static int sigpipe [2]; |
412 | static int sigpipe [2]; |
265 | static sig_atomic_t gotsig; |
413 | static sig_atomic_t volatile gotsig; |
266 | static struct ev_io sigev; |
|
|
267 | |
414 | |
268 | static void |
415 | static void |
269 | signals_init (ANSIG *base, int count) |
416 | signals_init (ANSIG *base, int count) |
270 | { |
417 | { |
271 | while (count--) |
418 | while (count--) |
272 | { |
419 | { |
273 | base->head = 0; |
420 | base->head = 0; |
274 | base->gotsig = 0; |
421 | base->gotsig = 0; |
|
|
422 | |
275 | ++base; |
423 | ++base; |
276 | } |
424 | } |
277 | } |
425 | } |
278 | |
426 | |
279 | static void |
427 | static void |
… | |
… | |
281 | { |
429 | { |
282 | signals [signum - 1].gotsig = 1; |
430 | signals [signum - 1].gotsig = 1; |
283 | |
431 | |
284 | if (!gotsig) |
432 | if (!gotsig) |
285 | { |
433 | { |
|
|
434 | int old_errno = errno; |
286 | gotsig = 1; |
435 | gotsig = 1; |
287 | write (sigpipe [1], &gotsig, 1); |
436 | write (sigpipe [1], &signum, 1); |
|
|
437 | errno = old_errno; |
288 | } |
438 | } |
289 | } |
439 | } |
290 | |
440 | |
291 | static void |
441 | static void |
292 | sigcb (struct ev_io *iow, int revents) |
442 | sigcb (EV_P_ struct ev_io *iow, int revents) |
293 | { |
443 | { |
294 | struct ev_signal *w; |
444 | struct ev_watcher_list *w; |
295 | int sig; |
445 | int signum; |
296 | |
446 | |
|
|
447 | read (sigpipe [0], &revents, 1); |
297 | gotsig = 0; |
448 | gotsig = 0; |
298 | read (sigpipe [0], &revents, 1); |
|
|
299 | |
449 | |
300 | for (sig = signalmax; sig--; ) |
450 | for (signum = signalmax; signum--; ) |
301 | if (signals [sig].gotsig) |
451 | if (signals [signum].gotsig) |
302 | { |
452 | { |
303 | signals [sig].gotsig = 0; |
453 | signals [signum].gotsig = 0; |
304 | |
454 | |
305 | for (w = signals [sig].head; w; w = w->next) |
455 | for (w = signals [signum].head; w; w = w->next) |
306 | event ((W)w, EV_SIGNAL); |
456 | event (EV_A_ (W)w, EV_SIGNAL); |
307 | } |
457 | } |
308 | } |
458 | } |
309 | |
459 | |
310 | static void |
460 | static void |
311 | siginit (void) |
461 | siginit (EV_P) |
312 | { |
462 | { |
|
|
463 | #ifndef WIN32 |
313 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
464 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
314 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
465 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
315 | |
466 | |
316 | /* rather than sort out wether we really need nb, set it */ |
467 | /* rather than sort out wether we really need nb, set it */ |
317 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
468 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
318 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
469 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
470 | #endif |
319 | |
471 | |
320 | evio_set (&sigev, sigpipe [0], EV_READ); |
472 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
321 | evio_start (&sigev); |
473 | ev_io_start (EV_A_ &sigev); |
|
|
474 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
322 | } |
475 | } |
323 | |
476 | |
324 | /*****************************************************************************/ |
477 | /*****************************************************************************/ |
325 | |
478 | |
326 | static struct ev_idle **idles; |
479 | #ifndef WIN32 |
327 | static int idlemax, idlecnt; |
|
|
328 | |
480 | |
329 | static struct ev_prepare **prepares; |
481 | #ifndef WCONTINUED |
330 | static int preparemax, preparecnt; |
482 | # define WCONTINUED 0 |
|
|
483 | #endif |
331 | |
484 | |
332 | static struct ev_check **checks; |
485 | static void |
333 | static int checkmax, checkcnt; |
486 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
487 | { |
|
|
488 | struct ev_child *w; |
|
|
489 | |
|
|
490 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
491 | if (w->pid == pid || !w->pid) |
|
|
492 | { |
|
|
493 | w->priority = sw->priority; /* need to do it *now* */ |
|
|
494 | w->rpid = pid; |
|
|
495 | w->rstatus = status; |
|
|
496 | event (EV_A_ (W)w, EV_CHILD); |
|
|
497 | } |
|
|
498 | } |
|
|
499 | |
|
|
500 | static void |
|
|
501 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
502 | { |
|
|
503 | int pid, status; |
|
|
504 | |
|
|
505 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
506 | { |
|
|
507 | /* make sure we are called again until all childs have been reaped */ |
|
|
508 | event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
509 | |
|
|
510 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
511 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
512 | } |
|
|
513 | } |
|
|
514 | |
|
|
515 | #endif |
334 | |
516 | |
335 | /*****************************************************************************/ |
517 | /*****************************************************************************/ |
336 | |
518 | |
|
|
519 | #if EV_USE_KQUEUE |
|
|
520 | # include "ev_kqueue.c" |
|
|
521 | #endif |
337 | #if HAVE_EPOLL |
522 | #if EV_USE_EPOLL |
338 | # include "ev_epoll.c" |
523 | # include "ev_epoll.c" |
339 | #endif |
524 | #endif |
|
|
525 | #if EV_USEV_POLL |
|
|
526 | # include "ev_poll.c" |
|
|
527 | #endif |
340 | #if HAVE_SELECT |
528 | #if EV_USE_SELECT |
341 | # include "ev_select.c" |
529 | # include "ev_select.c" |
342 | #endif |
530 | #endif |
343 | |
531 | |
344 | int ev_init (int flags) |
532 | int |
|
|
533 | ev_version_major (void) |
345 | { |
534 | { |
|
|
535 | return EV_VERSION_MAJOR; |
|
|
536 | } |
|
|
537 | |
|
|
538 | int |
|
|
539 | ev_version_minor (void) |
|
|
540 | { |
|
|
541 | return EV_VERSION_MINOR; |
|
|
542 | } |
|
|
543 | |
|
|
544 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
545 | static int |
|
|
546 | enable_secure (void) |
|
|
547 | { |
|
|
548 | #ifdef WIN32 |
|
|
549 | return 0; |
|
|
550 | #else |
|
|
551 | return getuid () != geteuid () |
|
|
552 | || getgid () != getegid (); |
|
|
553 | #endif |
|
|
554 | } |
|
|
555 | |
|
|
556 | int |
|
|
557 | ev_method (EV_P) |
|
|
558 | { |
|
|
559 | return method; |
|
|
560 | } |
|
|
561 | |
|
|
562 | static void |
|
|
563 | loop_init (EV_P_ int methods) |
|
|
564 | { |
|
|
565 | if (!method) |
|
|
566 | { |
346 | #if HAVE_MONOTONIC |
567 | #if EV_USE_MONOTONIC |
347 | { |
568 | { |
348 | struct timespec ts; |
569 | struct timespec ts; |
349 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
570 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
350 | have_monotonic = 1; |
571 | have_monotonic = 1; |
351 | } |
572 | } |
352 | #endif |
573 | #endif |
353 | |
574 | |
354 | ev_now = ev_time (); |
575 | rt_now = ev_time (); |
355 | now = get_clock (); |
576 | mn_now = get_clock (); |
356 | diff = ev_now - now; |
577 | now_floor = mn_now; |
|
|
578 | rtmn_diff = rt_now - mn_now; |
357 | |
579 | |
|
|
580 | if (methods == EVMETHOD_AUTO) |
|
|
581 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
582 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
583 | else |
|
|
584 | methods = EVMETHOD_ANY; |
|
|
585 | |
|
|
586 | method = 0; |
|
|
587 | #if EV_USE_KQUEUE |
|
|
588 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
589 | #endif |
|
|
590 | #if EV_USE_EPOLL |
|
|
591 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
592 | #endif |
|
|
593 | #if EV_USEV_POLL |
|
|
594 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
595 | #endif |
|
|
596 | #if EV_USE_SELECT |
|
|
597 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
|
|
598 | #endif |
|
|
599 | } |
|
|
600 | } |
|
|
601 | |
|
|
602 | void |
|
|
603 | loop_destroy (EV_P) |
|
|
604 | { |
|
|
605 | #if EV_USE_KQUEUE |
|
|
606 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
607 | #endif |
|
|
608 | #if EV_USE_EPOLL |
|
|
609 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
610 | #endif |
|
|
611 | #if EV_USEV_POLL |
|
|
612 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
613 | #endif |
|
|
614 | #if EV_USE_SELECT |
|
|
615 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
616 | #endif |
|
|
617 | |
|
|
618 | method = 0; |
|
|
619 | /*TODO*/ |
|
|
620 | } |
|
|
621 | |
|
|
622 | void |
|
|
623 | loop_fork (EV_P) |
|
|
624 | { |
|
|
625 | /*TODO*/ |
|
|
626 | #if EV_USE_EPOLL |
|
|
627 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
628 | #endif |
|
|
629 | #if EV_USE_KQUEUE |
|
|
630 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
631 | #endif |
|
|
632 | } |
|
|
633 | |
|
|
634 | #if EV_MULTIPLICITY |
|
|
635 | struct ev_loop * |
|
|
636 | ev_loop_new (int methods) |
|
|
637 | { |
|
|
638 | struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); |
|
|
639 | |
|
|
640 | loop_init (EV_A_ methods); |
|
|
641 | |
|
|
642 | if (ev_methods (EV_A)) |
|
|
643 | return loop; |
|
|
644 | |
|
|
645 | return 0; |
|
|
646 | } |
|
|
647 | |
|
|
648 | void |
|
|
649 | ev_loop_destroy (EV_P) |
|
|
650 | { |
|
|
651 | loop_destroy (EV_A); |
|
|
652 | free (loop); |
|
|
653 | } |
|
|
654 | |
|
|
655 | void |
|
|
656 | ev_loop_fork (EV_P) |
|
|
657 | { |
|
|
658 | loop_fork (EV_A); |
|
|
659 | } |
|
|
660 | |
|
|
661 | #endif |
|
|
662 | |
|
|
663 | #if EV_MULTIPLICITY |
|
|
664 | struct ev_loop default_loop_struct; |
|
|
665 | static struct ev_loop *default_loop; |
|
|
666 | |
|
|
667 | struct ev_loop * |
|
|
668 | #else |
|
|
669 | static int default_loop; |
|
|
670 | |
|
|
671 | int |
|
|
672 | #endif |
|
|
673 | ev_default_loop (int methods) |
|
|
674 | { |
|
|
675 | if (sigpipe [0] == sigpipe [1]) |
358 | if (pipe (sigpipe)) |
676 | if (pipe (sigpipe)) |
359 | return 0; |
677 | return 0; |
360 | |
678 | |
361 | ev_method = EVMETHOD_NONE; |
679 | if (!default_loop) |
362 | #if HAVE_EPOLL |
|
|
363 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
364 | #endif |
|
|
365 | #if HAVE_SELECT |
|
|
366 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
367 | #endif |
|
|
368 | |
|
|
369 | if (ev_method) |
|
|
370 | { |
680 | { |
|
|
681 | #if EV_MULTIPLICITY |
|
|
682 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
683 | #else |
|
|
684 | default_loop = 1; |
|
|
685 | #endif |
|
|
686 | |
|
|
687 | loop_init (EV_A_ methods); |
|
|
688 | |
|
|
689 | if (ev_method (EV_A)) |
|
|
690 | { |
371 | evw_init (&sigev, sigcb); |
691 | ev_watcher_init (&sigev, sigcb); |
|
|
692 | ev_set_priority (&sigev, EV_MAXPRI); |
372 | siginit (); |
693 | siginit (EV_A); |
373 | } |
|
|
374 | |
694 | |
375 | return ev_method; |
695 | #ifndef WIN32 |
376 | } |
696 | ev_signal_init (&childev, childcb, SIGCHLD); |
377 | |
697 | ev_set_priority (&childev, EV_MAXPRI); |
378 | /*****************************************************************************/ |
698 | ev_signal_start (EV_A_ &childev); |
379 | |
699 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
380 | void ev_prefork (void) |
|
|
381 | { |
|
|
382 | /* nop */ |
|
|
383 | } |
|
|
384 | |
|
|
385 | void ev_postfork_parent (void) |
|
|
386 | { |
|
|
387 | /* nop */ |
|
|
388 | } |
|
|
389 | |
|
|
390 | void ev_postfork_child (void) |
|
|
391 | { |
|
|
392 | #if HAVE_EPOLL |
|
|
393 | if (ev_method == EVMETHOD_EPOLL) |
|
|
394 | epoll_postfork_child (); |
|
|
395 | #endif |
700 | #endif |
|
|
701 | } |
|
|
702 | else |
|
|
703 | default_loop = 0; |
|
|
704 | } |
396 | |
705 | |
|
|
706 | return default_loop; |
|
|
707 | } |
|
|
708 | |
|
|
709 | void |
|
|
710 | ev_default_destroy (void) |
|
|
711 | { |
|
|
712 | struct ev_loop *loop = default_loop; |
|
|
713 | |
|
|
714 | ev_ref (EV_A); /* child watcher */ |
|
|
715 | ev_signal_stop (EV_A_ &childev); |
|
|
716 | |
|
|
717 | ev_ref (EV_A); /* signal watcher */ |
397 | evio_stop (&sigev); |
718 | ev_io_stop (EV_A_ &sigev); |
|
|
719 | |
|
|
720 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
721 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
722 | |
|
|
723 | loop_destroy (EV_A); |
|
|
724 | } |
|
|
725 | |
|
|
726 | void |
|
|
727 | ev_default_fork (EV_P) |
|
|
728 | { |
|
|
729 | loop_fork (EV_A); |
|
|
730 | |
|
|
731 | ev_io_stop (EV_A_ &sigev); |
398 | close (sigpipe [0]); |
732 | close (sigpipe [0]); |
399 | close (sigpipe [1]); |
733 | close (sigpipe [1]); |
400 | pipe (sigpipe); |
734 | pipe (sigpipe); |
|
|
735 | |
|
|
736 | ev_ref (EV_A); /* signal watcher */ |
401 | siginit (); |
737 | siginit (EV_A); |
402 | } |
738 | } |
403 | |
739 | |
404 | /*****************************************************************************/ |
740 | /*****************************************************************************/ |
405 | |
741 | |
406 | static void |
742 | static void |
407 | fd_reify (void) |
743 | call_pending (EV_P) |
408 | { |
744 | { |
409 | int i; |
745 | int pri; |
410 | |
746 | |
411 | for (i = 0; i < fdchangecnt; ++i) |
747 | for (pri = NUMPRI; pri--; ) |
412 | { |
748 | while (pendingcnt [pri]) |
413 | int fd = fdchanges [i]; |
|
|
414 | ANFD *anfd = anfds + fd; |
|
|
415 | struct ev_io *w; |
|
|
416 | |
|
|
417 | int wev = 0; |
|
|
418 | |
|
|
419 | for (w = anfd->head; w; w = w->next) |
|
|
420 | wev |= w->events; |
|
|
421 | |
|
|
422 | if (anfd->wev != wev) |
|
|
423 | { |
749 | { |
424 | method_modify (fd, anfd->wev, wev); |
|
|
425 | anfd->wev = wev; |
|
|
426 | } |
|
|
427 | } |
|
|
428 | |
|
|
429 | fdchangecnt = 0; |
|
|
430 | } |
|
|
431 | |
|
|
432 | static void |
|
|
433 | call_pending () |
|
|
434 | { |
|
|
435 | while (pendingcnt) |
|
|
436 | { |
|
|
437 | ANPENDING *p = pendings + --pendingcnt; |
750 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
438 | |
751 | |
439 | if (p->w) |
752 | if (p->w) |
440 | { |
753 | { |
441 | p->w->pending = 0; |
754 | p->w->pending = 0; |
442 | p->w->cb (p->w, p->events); |
755 | p->w->cb (EV_A_ p->w, p->events); |
443 | } |
756 | } |
444 | } |
757 | } |
445 | } |
758 | } |
446 | |
759 | |
447 | static void |
760 | static void |
448 | timers_reify () |
761 | timers_reify (EV_P) |
449 | { |
762 | { |
450 | while (timercnt && timers [0]->at <= now) |
763 | while (timercnt && timers [0]->at <= mn_now) |
451 | { |
764 | { |
452 | struct ev_timer *w = timers [0]; |
765 | struct ev_timer *w = timers [0]; |
453 | |
|
|
454 | event ((W)w, EV_TIMEOUT); |
|
|
455 | |
766 | |
456 | /* first reschedule or stop timer */ |
767 | /* first reschedule or stop timer */ |
457 | if (w->repeat) |
768 | if (w->repeat) |
458 | { |
769 | { |
|
|
770 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
459 | w->at = now + w->repeat; |
771 | w->at = mn_now + w->repeat; |
460 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
|
|
461 | downheap ((WT *)timers, timercnt, 0); |
772 | downheap ((WT *)timers, timercnt, 0); |
462 | } |
773 | } |
463 | else |
774 | else |
464 | evtimer_stop (w); /* nonrepeating: stop timer */ |
775 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
465 | } |
|
|
466 | } |
|
|
467 | |
776 | |
|
|
777 | event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
778 | } |
|
|
779 | } |
|
|
780 | |
468 | static void |
781 | static void |
469 | periodics_reify () |
782 | periodics_reify (EV_P) |
470 | { |
783 | { |
471 | while (periodiccnt && periodics [0]->at <= ev_now) |
784 | while (periodiccnt && periodics [0]->at <= rt_now) |
472 | { |
785 | { |
473 | struct ev_periodic *w = periodics [0]; |
786 | struct ev_periodic *w = periodics [0]; |
474 | |
787 | |
475 | /* first reschedule or stop timer */ |
788 | /* first reschedule or stop timer */ |
476 | if (w->interval) |
789 | if (w->interval) |
477 | { |
790 | { |
478 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
791 | w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; |
479 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
792 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); |
480 | downheap ((WT *)periodics, periodiccnt, 0); |
793 | downheap ((WT *)periodics, periodiccnt, 0); |
481 | } |
794 | } |
482 | else |
795 | else |
483 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
796 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
484 | |
797 | |
485 | event ((W)w, EV_TIMEOUT); |
798 | event (EV_A_ (W)w, EV_PERIODIC); |
486 | } |
799 | } |
487 | } |
800 | } |
488 | |
801 | |
489 | static void |
802 | static void |
490 | periodics_reschedule (ev_tstamp diff) |
803 | periodics_reschedule (EV_P) |
491 | { |
804 | { |
492 | int i; |
805 | int i; |
493 | |
806 | |
494 | /* adjust periodics after time jump */ |
807 | /* adjust periodics after time jump */ |
495 | for (i = 0; i < periodiccnt; ++i) |
808 | for (i = 0; i < periodiccnt; ++i) |
496 | { |
809 | { |
497 | struct ev_periodic *w = periodics [i]; |
810 | struct ev_periodic *w = periodics [i]; |
498 | |
811 | |
499 | if (w->interval) |
812 | if (w->interval) |
500 | { |
813 | { |
501 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
814 | ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; |
502 | |
815 | |
503 | if (fabs (diff) >= 1e-4) |
816 | if (fabs (diff) >= 1e-4) |
504 | { |
817 | { |
505 | evperiodic_stop (w); |
818 | ev_periodic_stop (EV_A_ w); |
506 | evperiodic_start (w); |
819 | ev_periodic_start (EV_A_ w); |
507 | |
820 | |
508 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
821 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
509 | } |
822 | } |
510 | } |
823 | } |
511 | } |
824 | } |
512 | } |
825 | } |
513 | |
826 | |
|
|
827 | inline int |
|
|
828 | time_update_monotonic (EV_P) |
|
|
829 | { |
|
|
830 | mn_now = get_clock (); |
|
|
831 | |
|
|
832 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
833 | { |
|
|
834 | rt_now = rtmn_diff + mn_now; |
|
|
835 | return 0; |
|
|
836 | } |
|
|
837 | else |
|
|
838 | { |
|
|
839 | now_floor = mn_now; |
|
|
840 | rt_now = ev_time (); |
|
|
841 | return 1; |
|
|
842 | } |
|
|
843 | } |
|
|
844 | |
514 | static void |
845 | static void |
515 | time_update () |
846 | time_update (EV_P) |
516 | { |
847 | { |
517 | int i; |
848 | int i; |
518 | |
849 | |
519 | ev_now = ev_time (); |
850 | #if EV_USE_MONOTONIC |
520 | |
|
|
521 | if (have_monotonic) |
851 | if (expect_true (have_monotonic)) |
522 | { |
852 | { |
523 | ev_tstamp odiff = diff; |
853 | if (time_update_monotonic (EV_A)) |
524 | |
|
|
525 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
526 | { |
854 | { |
527 | now = get_clock (); |
855 | ev_tstamp odiff = rtmn_diff; |
|
|
856 | |
|
|
857 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
858 | { |
528 | diff = ev_now - now; |
859 | rtmn_diff = rt_now - mn_now; |
529 | |
860 | |
530 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
861 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
531 | return; /* all is well */ |
862 | return; /* all is well */ |
532 | |
863 | |
533 | ev_now = ev_time (); |
864 | rt_now = ev_time (); |
|
|
865 | mn_now = get_clock (); |
|
|
866 | now_floor = mn_now; |
|
|
867 | } |
|
|
868 | |
|
|
869 | periodics_reschedule (EV_A); |
|
|
870 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
871 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
534 | } |
872 | } |
535 | |
|
|
536 | periodics_reschedule (diff - odiff); |
|
|
537 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
538 | } |
873 | } |
539 | else |
874 | else |
|
|
875 | #endif |
540 | { |
876 | { |
541 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
877 | rt_now = ev_time (); |
|
|
878 | |
|
|
879 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
542 | { |
880 | { |
543 | periodics_reschedule (ev_now - now); |
881 | periodics_reschedule (EV_A); |
544 | |
882 | |
545 | /* adjust timers. this is easy, as the offset is the same for all */ |
883 | /* adjust timers. this is easy, as the offset is the same for all */ |
546 | for (i = 0; i < timercnt; ++i) |
884 | for (i = 0; i < timercnt; ++i) |
547 | timers [i]->at += diff; |
885 | timers [i]->at += rt_now - mn_now; |
548 | } |
886 | } |
549 | |
887 | |
550 | now = ev_now; |
888 | mn_now = rt_now; |
551 | } |
889 | } |
552 | } |
890 | } |
553 | |
891 | |
554 | int ev_loop_done; |
892 | void |
|
|
893 | ev_ref (EV_P) |
|
|
894 | { |
|
|
895 | ++activecnt; |
|
|
896 | } |
555 | |
897 | |
|
|
898 | void |
|
|
899 | ev_unref (EV_P) |
|
|
900 | { |
|
|
901 | --activecnt; |
|
|
902 | } |
|
|
903 | |
|
|
904 | static int loop_done; |
|
|
905 | |
|
|
906 | void |
556 | void ev_loop (int flags) |
907 | ev_loop (EV_P_ int flags) |
557 | { |
908 | { |
558 | double block; |
909 | double block; |
559 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
910 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
560 | |
911 | |
561 | do |
912 | do |
562 | { |
913 | { |
563 | /* queue check watchers (and execute them) */ |
914 | /* queue check watchers (and execute them) */ |
564 | if (preparecnt) |
915 | if (expect_false (preparecnt)) |
565 | { |
916 | { |
566 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
917 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
567 | call_pending (); |
918 | call_pending (EV_A); |
568 | } |
919 | } |
569 | |
920 | |
570 | /* update fd-related kernel structures */ |
921 | /* update fd-related kernel structures */ |
571 | fd_reify (); |
922 | fd_reify (EV_A); |
572 | |
923 | |
573 | /* calculate blocking time */ |
924 | /* calculate blocking time */ |
574 | |
925 | |
575 | /* we only need this for !monotonic clockor timers, but as we basically |
926 | /* we only need this for !monotonic clockor timers, but as we basically |
576 | always have timers, we just calculate it always */ |
927 | always have timers, we just calculate it always */ |
|
|
928 | #if EV_USE_MONOTONIC |
|
|
929 | if (expect_true (have_monotonic)) |
|
|
930 | time_update_monotonic (EV_A); |
|
|
931 | else |
|
|
932 | #endif |
|
|
933 | { |
577 | ev_now = ev_time (); |
934 | rt_now = ev_time (); |
|
|
935 | mn_now = rt_now; |
|
|
936 | } |
578 | |
937 | |
579 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
938 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
580 | block = 0.; |
939 | block = 0.; |
581 | else |
940 | else |
582 | { |
941 | { |
583 | block = MAX_BLOCKTIME; |
942 | block = MAX_BLOCKTIME; |
584 | |
943 | |
585 | if (timercnt) |
944 | if (timercnt) |
586 | { |
945 | { |
587 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
946 | ev_tstamp to = timers [0]->at - mn_now + method_fudge; |
588 | if (block > to) block = to; |
947 | if (block > to) block = to; |
589 | } |
948 | } |
590 | |
949 | |
591 | if (periodiccnt) |
950 | if (periodiccnt) |
592 | { |
951 | { |
593 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
952 | ev_tstamp to = periodics [0]->at - rt_now + method_fudge; |
594 | if (block > to) block = to; |
953 | if (block > to) block = to; |
595 | } |
954 | } |
596 | |
955 | |
597 | if (block < 0.) block = 0.; |
956 | if (block < 0.) block = 0.; |
598 | } |
957 | } |
599 | |
958 | |
600 | method_poll (block); |
959 | method_poll (EV_A_ block); |
601 | |
960 | |
602 | /* update ev_now, do magic */ |
961 | /* update rt_now, do magic */ |
603 | time_update (); |
962 | time_update (EV_A); |
604 | |
963 | |
605 | /* queue pending timers and reschedule them */ |
964 | /* queue pending timers and reschedule them */ |
606 | timers_reify (); /* relative timers called last */ |
965 | timers_reify (EV_A); /* relative timers called last */ |
607 | periodics_reify (); /* absolute timers called first */ |
966 | periodics_reify (EV_A); /* absolute timers called first */ |
608 | |
967 | |
609 | /* queue idle watchers unless io or timers are pending */ |
968 | /* queue idle watchers unless io or timers are pending */ |
610 | if (!pendingcnt) |
969 | if (!pendingcnt) |
611 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
970 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
612 | |
971 | |
613 | /* queue check watchers, to be executed first */ |
972 | /* queue check watchers, to be executed first */ |
614 | if (checkcnt) |
973 | if (checkcnt) |
615 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
974 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
616 | |
975 | |
617 | call_pending (); |
976 | call_pending (EV_A); |
618 | } |
977 | } |
619 | while (!ev_loop_done); |
978 | while (activecnt && !loop_done); |
620 | |
979 | |
621 | if (ev_loop_done != 2) |
980 | if (loop_done != 2) |
622 | ev_loop_done = 0; |
981 | loop_done = 0; |
|
|
982 | } |
|
|
983 | |
|
|
984 | void |
|
|
985 | ev_unloop (EV_P_ int how) |
|
|
986 | { |
|
|
987 | loop_done = how; |
623 | } |
988 | } |
624 | |
989 | |
625 | /*****************************************************************************/ |
990 | /*****************************************************************************/ |
626 | |
991 | |
627 | static void |
992 | inline void |
628 | wlist_add (WL *head, WL elem) |
993 | wlist_add (WL *head, WL elem) |
629 | { |
994 | { |
630 | elem->next = *head; |
995 | elem->next = *head; |
631 | *head = elem; |
996 | *head = elem; |
632 | } |
997 | } |
633 | |
998 | |
634 | static void |
999 | inline void |
635 | wlist_del (WL *head, WL elem) |
1000 | wlist_del (WL *head, WL elem) |
636 | { |
1001 | { |
637 | while (*head) |
1002 | while (*head) |
638 | { |
1003 | { |
639 | if (*head == elem) |
1004 | if (*head == elem) |
… | |
… | |
644 | |
1009 | |
645 | head = &(*head)->next; |
1010 | head = &(*head)->next; |
646 | } |
1011 | } |
647 | } |
1012 | } |
648 | |
1013 | |
649 | static void |
1014 | inline void |
650 | ev_clear (W w) |
1015 | ev_clear_pending (EV_P_ W w) |
651 | { |
1016 | { |
652 | if (w->pending) |
1017 | if (w->pending) |
653 | { |
1018 | { |
654 | pendings [w->pending - 1].w = 0; |
1019 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
655 | w->pending = 0; |
1020 | w->pending = 0; |
656 | } |
1021 | } |
657 | } |
1022 | } |
658 | |
1023 | |
659 | static void |
1024 | inline void |
660 | ev_start (W w, int active) |
1025 | ev_start (EV_P_ W w, int active) |
661 | { |
1026 | { |
|
|
1027 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1028 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1029 | |
662 | w->active = active; |
1030 | w->active = active; |
|
|
1031 | ev_ref (EV_A); |
663 | } |
1032 | } |
664 | |
1033 | |
665 | static void |
1034 | inline void |
666 | ev_stop (W w) |
1035 | ev_stop (EV_P_ W w) |
667 | { |
1036 | { |
|
|
1037 | ev_unref (EV_A); |
668 | w->active = 0; |
1038 | w->active = 0; |
669 | } |
1039 | } |
670 | |
1040 | |
671 | /*****************************************************************************/ |
1041 | /*****************************************************************************/ |
672 | |
1042 | |
673 | void |
1043 | void |
674 | evio_start (struct ev_io *w) |
1044 | ev_io_start (EV_P_ struct ev_io *w) |
675 | { |
1045 | { |
|
|
1046 | int fd = w->fd; |
|
|
1047 | |
676 | if (ev_is_active (w)) |
1048 | if (ev_is_active (w)) |
677 | return; |
1049 | return; |
678 | |
1050 | |
679 | int fd = w->fd; |
1051 | assert (("ev_io_start called with negative fd", fd >= 0)); |
680 | |
1052 | |
681 | ev_start ((W)w, 1); |
1053 | ev_start (EV_A_ (W)w, 1); |
682 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1054 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
683 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1055 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
684 | |
1056 | |
685 | ++fdchangecnt; |
1057 | fd_change (EV_A_ fd); |
686 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
687 | fdchanges [fdchangecnt - 1] = fd; |
|
|
688 | } |
1058 | } |
689 | |
1059 | |
690 | void |
1060 | void |
691 | evio_stop (struct ev_io *w) |
1061 | ev_io_stop (EV_P_ struct ev_io *w) |
692 | { |
1062 | { |
693 | ev_clear ((W)w); |
1063 | ev_clear_pending (EV_A_ (W)w); |
694 | if (!ev_is_active (w)) |
1064 | if (!ev_is_active (w)) |
695 | return; |
1065 | return; |
696 | |
1066 | |
697 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1067 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
698 | ev_stop ((W)w); |
1068 | ev_stop (EV_A_ (W)w); |
699 | |
1069 | |
700 | ++fdchangecnt; |
1070 | fd_change (EV_A_ w->fd); |
701 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
702 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
703 | } |
1071 | } |
704 | |
1072 | |
705 | void |
1073 | void |
706 | evtimer_start (struct ev_timer *w) |
1074 | ev_timer_start (EV_P_ struct ev_timer *w) |
707 | { |
1075 | { |
708 | if (ev_is_active (w)) |
1076 | if (ev_is_active (w)) |
709 | return; |
1077 | return; |
710 | |
1078 | |
711 | w->at += now; |
1079 | w->at += mn_now; |
712 | |
1080 | |
713 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1081 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
714 | |
1082 | |
715 | ev_start ((W)w, ++timercnt); |
1083 | ev_start (EV_A_ (W)w, ++timercnt); |
716 | array_needsize (timers, timermax, timercnt, ); |
1084 | array_needsize (timers, timermax, timercnt, ); |
717 | timers [timercnt - 1] = w; |
1085 | timers [timercnt - 1] = w; |
718 | upheap ((WT *)timers, timercnt - 1); |
1086 | upheap ((WT *)timers, timercnt - 1); |
719 | } |
1087 | } |
720 | |
1088 | |
721 | void |
1089 | void |
722 | evtimer_stop (struct ev_timer *w) |
1090 | ev_timer_stop (EV_P_ struct ev_timer *w) |
723 | { |
1091 | { |
724 | ev_clear ((W)w); |
1092 | ev_clear_pending (EV_A_ (W)w); |
725 | if (!ev_is_active (w)) |
1093 | if (!ev_is_active (w)) |
726 | return; |
1094 | return; |
727 | |
1095 | |
728 | if (w->active < timercnt--) |
1096 | if (w->active < timercnt--) |
729 | { |
1097 | { |
… | |
… | |
731 | downheap ((WT *)timers, timercnt, w->active - 1); |
1099 | downheap ((WT *)timers, timercnt, w->active - 1); |
732 | } |
1100 | } |
733 | |
1101 | |
734 | w->at = w->repeat; |
1102 | w->at = w->repeat; |
735 | |
1103 | |
736 | ev_stop ((W)w); |
1104 | ev_stop (EV_A_ (W)w); |
737 | } |
1105 | } |
738 | |
1106 | |
739 | void |
1107 | void |
740 | evtimer_again (struct ev_timer *w) |
1108 | ev_timer_again (EV_P_ struct ev_timer *w) |
741 | { |
1109 | { |
742 | if (ev_is_active (w)) |
1110 | if (ev_is_active (w)) |
743 | { |
1111 | { |
744 | if (w->repeat) |
1112 | if (w->repeat) |
745 | { |
1113 | { |
746 | w->at = now + w->repeat; |
1114 | w->at = mn_now + w->repeat; |
747 | downheap ((WT *)timers, timercnt, w->active - 1); |
1115 | downheap ((WT *)timers, timercnt, w->active - 1); |
748 | } |
1116 | } |
749 | else |
1117 | else |
750 | evtimer_stop (w); |
1118 | ev_timer_stop (EV_A_ w); |
751 | } |
1119 | } |
752 | else if (w->repeat) |
1120 | else if (w->repeat) |
753 | evtimer_start (w); |
1121 | ev_timer_start (EV_A_ w); |
754 | } |
1122 | } |
755 | |
1123 | |
756 | void |
1124 | void |
757 | evperiodic_start (struct ev_periodic *w) |
1125 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
758 | { |
1126 | { |
759 | if (ev_is_active (w)) |
1127 | if (ev_is_active (w)) |
760 | return; |
1128 | return; |
761 | |
1129 | |
762 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1130 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
763 | |
1131 | |
764 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1132 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
765 | if (w->interval) |
1133 | if (w->interval) |
766 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1134 | w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; |
767 | |
1135 | |
768 | ev_start ((W)w, ++periodiccnt); |
1136 | ev_start (EV_A_ (W)w, ++periodiccnt); |
769 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1137 | array_needsize (periodics, periodicmax, periodiccnt, ); |
770 | periodics [periodiccnt - 1] = w; |
1138 | periodics [periodiccnt - 1] = w; |
771 | upheap ((WT *)periodics, periodiccnt - 1); |
1139 | upheap ((WT *)periodics, periodiccnt - 1); |
772 | } |
1140 | } |
773 | |
1141 | |
774 | void |
1142 | void |
775 | evperiodic_stop (struct ev_periodic *w) |
1143 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
776 | { |
1144 | { |
777 | ev_clear ((W)w); |
1145 | ev_clear_pending (EV_A_ (W)w); |
778 | if (!ev_is_active (w)) |
1146 | if (!ev_is_active (w)) |
779 | return; |
1147 | return; |
780 | |
1148 | |
781 | if (w->active < periodiccnt--) |
1149 | if (w->active < periodiccnt--) |
782 | { |
1150 | { |
783 | periodics [w->active - 1] = periodics [periodiccnt]; |
1151 | periodics [w->active - 1] = periodics [periodiccnt]; |
784 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1152 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
785 | } |
1153 | } |
786 | |
1154 | |
787 | ev_stop ((W)w); |
1155 | ev_stop (EV_A_ (W)w); |
788 | } |
1156 | } |
789 | |
1157 | |
790 | void |
1158 | void |
791 | evsignal_start (struct ev_signal *w) |
1159 | ev_idle_start (EV_P_ struct ev_idle *w) |
792 | { |
1160 | { |
793 | if (ev_is_active (w)) |
1161 | if (ev_is_active (w)) |
794 | return; |
1162 | return; |
795 | |
1163 | |
|
|
1164 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1165 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
1166 | idles [idlecnt - 1] = w; |
|
|
1167 | } |
|
|
1168 | |
|
|
1169 | void |
|
|
1170 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1171 | { |
|
|
1172 | ev_clear_pending (EV_A_ (W)w); |
|
|
1173 | if (ev_is_active (w)) |
|
|
1174 | return; |
|
|
1175 | |
|
|
1176 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
1177 | ev_stop (EV_A_ (W)w); |
|
|
1178 | } |
|
|
1179 | |
|
|
1180 | void |
|
|
1181 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1182 | { |
|
|
1183 | if (ev_is_active (w)) |
|
|
1184 | return; |
|
|
1185 | |
|
|
1186 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1187 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1188 | prepares [preparecnt - 1] = w; |
|
|
1189 | } |
|
|
1190 | |
|
|
1191 | void |
|
|
1192 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1193 | { |
|
|
1194 | ev_clear_pending (EV_A_ (W)w); |
|
|
1195 | if (ev_is_active (w)) |
|
|
1196 | return; |
|
|
1197 | |
|
|
1198 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
1199 | ev_stop (EV_A_ (W)w); |
|
|
1200 | } |
|
|
1201 | |
|
|
1202 | void |
|
|
1203 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1204 | { |
|
|
1205 | if (ev_is_active (w)) |
|
|
1206 | return; |
|
|
1207 | |
|
|
1208 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1209 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
1210 | checks [checkcnt - 1] = w; |
|
|
1211 | } |
|
|
1212 | |
|
|
1213 | void |
|
|
1214 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1215 | { |
|
|
1216 | ev_clear_pending (EV_A_ (W)w); |
|
|
1217 | if (ev_is_active (w)) |
|
|
1218 | return; |
|
|
1219 | |
|
|
1220 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
1221 | ev_stop (EV_A_ (W)w); |
|
|
1222 | } |
|
|
1223 | |
|
|
1224 | #ifndef SA_RESTART |
|
|
1225 | # define SA_RESTART 0 |
|
|
1226 | #endif |
|
|
1227 | |
|
|
1228 | void |
|
|
1229 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1230 | { |
|
|
1231 | #if EV_MULTIPLICITY |
|
|
1232 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
|
|
1233 | #endif |
|
|
1234 | if (ev_is_active (w)) |
|
|
1235 | return; |
|
|
1236 | |
|
|
1237 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1238 | |
796 | ev_start ((W)w, 1); |
1239 | ev_start (EV_A_ (W)w, 1); |
797 | array_needsize (signals, signalmax, w->signum, signals_init); |
1240 | array_needsize (signals, signalmax, w->signum, signals_init); |
798 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1241 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
799 | |
1242 | |
800 | if (!w->next) |
1243 | if (!w->next) |
801 | { |
1244 | { |
802 | struct sigaction sa; |
1245 | struct sigaction sa; |
803 | sa.sa_handler = sighandler; |
1246 | sa.sa_handler = sighandler; |
804 | sigfillset (&sa.sa_mask); |
1247 | sigfillset (&sa.sa_mask); |
805 | sa.sa_flags = 0; |
1248 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
806 | sigaction (w->signum, &sa, 0); |
1249 | sigaction (w->signum, &sa, 0); |
807 | } |
1250 | } |
808 | } |
1251 | } |
809 | |
1252 | |
810 | void |
1253 | void |
811 | evsignal_stop (struct ev_signal *w) |
1254 | ev_signal_stop (EV_P_ struct ev_signal *w) |
812 | { |
1255 | { |
813 | ev_clear ((W)w); |
1256 | ev_clear_pending (EV_A_ (W)w); |
814 | if (!ev_is_active (w)) |
1257 | if (!ev_is_active (w)) |
815 | return; |
1258 | return; |
816 | |
1259 | |
817 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1260 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
818 | ev_stop ((W)w); |
1261 | ev_stop (EV_A_ (W)w); |
819 | |
1262 | |
820 | if (!signals [w->signum - 1].head) |
1263 | if (!signals [w->signum - 1].head) |
821 | signal (w->signum, SIG_DFL); |
1264 | signal (w->signum, SIG_DFL); |
822 | } |
1265 | } |
823 | |
1266 | |
824 | void evidle_start (struct ev_idle *w) |
1267 | void |
|
|
1268 | ev_child_start (EV_P_ struct ev_child *w) |
825 | { |
1269 | { |
|
|
1270 | #if EV_MULTIPLICITY |
|
|
1271 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1272 | #endif |
826 | if (ev_is_active (w)) |
1273 | if (ev_is_active (w)) |
827 | return; |
1274 | return; |
828 | |
1275 | |
829 | ev_start ((W)w, ++idlecnt); |
1276 | ev_start (EV_A_ (W)w, 1); |
830 | array_needsize (idles, idlemax, idlecnt, ); |
1277 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
831 | idles [idlecnt - 1] = w; |
|
|
832 | } |
1278 | } |
833 | |
1279 | |
834 | void evidle_stop (struct ev_idle *w) |
1280 | void |
|
|
1281 | ev_child_stop (EV_P_ struct ev_child *w) |
835 | { |
1282 | { |
836 | ev_clear ((W)w); |
1283 | ev_clear_pending (EV_A_ (W)w); |
837 | if (ev_is_active (w)) |
1284 | if (ev_is_active (w)) |
838 | return; |
1285 | return; |
839 | |
1286 | |
840 | idles [w->active - 1] = idles [--idlecnt]; |
1287 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
841 | ev_stop ((W)w); |
1288 | ev_stop (EV_A_ (W)w); |
842 | } |
|
|
843 | |
|
|
844 | void evprepare_start (struct ev_prepare *w) |
|
|
845 | { |
|
|
846 | if (ev_is_active (w)) |
|
|
847 | return; |
|
|
848 | |
|
|
849 | ev_start ((W)w, ++preparecnt); |
|
|
850 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
851 | prepares [preparecnt - 1] = w; |
|
|
852 | } |
|
|
853 | |
|
|
854 | void evprepare_stop (struct ev_prepare *w) |
|
|
855 | { |
|
|
856 | ev_clear ((W)w); |
|
|
857 | if (ev_is_active (w)) |
|
|
858 | return; |
|
|
859 | |
|
|
860 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
861 | ev_stop ((W)w); |
|
|
862 | } |
|
|
863 | |
|
|
864 | void evcheck_start (struct ev_check *w) |
|
|
865 | { |
|
|
866 | if (ev_is_active (w)) |
|
|
867 | return; |
|
|
868 | |
|
|
869 | ev_start ((W)w, ++checkcnt); |
|
|
870 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
871 | checks [checkcnt - 1] = w; |
|
|
872 | } |
|
|
873 | |
|
|
874 | void evcheck_stop (struct ev_check *w) |
|
|
875 | { |
|
|
876 | ev_clear ((W)w); |
|
|
877 | if (ev_is_active (w)) |
|
|
878 | return; |
|
|
879 | |
|
|
880 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
881 | ev_stop ((W)w); |
|
|
882 | } |
1289 | } |
883 | |
1290 | |
884 | /*****************************************************************************/ |
1291 | /*****************************************************************************/ |
885 | |
1292 | |
886 | struct ev_once |
1293 | struct ev_once |
… | |
… | |
890 | void (*cb)(int revents, void *arg); |
1297 | void (*cb)(int revents, void *arg); |
891 | void *arg; |
1298 | void *arg; |
892 | }; |
1299 | }; |
893 | |
1300 | |
894 | static void |
1301 | static void |
895 | once_cb (struct ev_once *once, int revents) |
1302 | once_cb (EV_P_ struct ev_once *once, int revents) |
896 | { |
1303 | { |
897 | void (*cb)(int revents, void *arg) = once->cb; |
1304 | void (*cb)(int revents, void *arg) = once->cb; |
898 | void *arg = once->arg; |
1305 | void *arg = once->arg; |
899 | |
1306 | |
900 | evio_stop (&once->io); |
1307 | ev_io_stop (EV_A_ &once->io); |
901 | evtimer_stop (&once->to); |
1308 | ev_timer_stop (EV_A_ &once->to); |
902 | free (once); |
1309 | free (once); |
903 | |
1310 | |
904 | cb (revents, arg); |
1311 | cb (revents, arg); |
905 | } |
1312 | } |
906 | |
1313 | |
907 | static void |
1314 | static void |
908 | once_cb_io (struct ev_io *w, int revents) |
1315 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
909 | { |
1316 | { |
910 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1317 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
911 | } |
1318 | } |
912 | |
1319 | |
913 | static void |
1320 | static void |
914 | once_cb_to (struct ev_timer *w, int revents) |
1321 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
915 | { |
1322 | { |
916 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1323 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
917 | } |
1324 | } |
918 | |
1325 | |
919 | void |
1326 | void |
920 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1327 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
921 | { |
1328 | { |
922 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1329 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
923 | |
1330 | |
924 | if (!once) |
1331 | if (!once) |
925 | cb (EV_ERROR, arg); |
1332 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
926 | else |
1333 | else |
927 | { |
1334 | { |
928 | once->cb = cb; |
1335 | once->cb = cb; |
929 | once->arg = arg; |
1336 | once->arg = arg; |
930 | |
1337 | |
931 | evw_init (&once->io, once_cb_io); |
1338 | ev_watcher_init (&once->io, once_cb_io); |
932 | |
|
|
933 | if (fd >= 0) |
1339 | if (fd >= 0) |
934 | { |
1340 | { |
935 | evio_set (&once->io, fd, events); |
1341 | ev_io_set (&once->io, fd, events); |
936 | evio_start (&once->io); |
1342 | ev_io_start (EV_A_ &once->io); |
937 | } |
1343 | } |
938 | |
1344 | |
939 | evw_init (&once->to, once_cb_to); |
1345 | ev_watcher_init (&once->to, once_cb_to); |
940 | |
|
|
941 | if (timeout >= 0.) |
1346 | if (timeout >= 0.) |
942 | { |
1347 | { |
943 | evtimer_set (&once->to, timeout, 0.); |
1348 | ev_timer_set (&once->to, timeout, 0.); |
944 | evtimer_start (&once->to); |
1349 | ev_timer_start (EV_A_ &once->to); |
945 | } |
1350 | } |
946 | } |
1351 | } |
947 | } |
1352 | } |
948 | |
1353 | |
949 | /*****************************************************************************/ |
|
|
950 | |
|
|
951 | #if 0 |
|
|
952 | |
|
|
953 | struct ev_io wio; |
|
|
954 | |
|
|
955 | static void |
|
|
956 | sin_cb (struct ev_io *w, int revents) |
|
|
957 | { |
|
|
958 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
959 | } |
|
|
960 | |
|
|
961 | static void |
|
|
962 | ocb (struct ev_timer *w, int revents) |
|
|
963 | { |
|
|
964 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
965 | evtimer_stop (w); |
|
|
966 | evtimer_start (w); |
|
|
967 | } |
|
|
968 | |
|
|
969 | static void |
|
|
970 | scb (struct ev_signal *w, int revents) |
|
|
971 | { |
|
|
972 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
973 | evio_stop (&wio); |
|
|
974 | evio_start (&wio); |
|
|
975 | } |
|
|
976 | |
|
|
977 | static void |
|
|
978 | gcb (struct ev_signal *w, int revents) |
|
|
979 | { |
|
|
980 | fprintf (stderr, "generic %x\n", revents); |
|
|
981 | |
|
|
982 | } |
|
|
983 | |
|
|
984 | int main (void) |
|
|
985 | { |
|
|
986 | ev_init (0); |
|
|
987 | |
|
|
988 | evio_init (&wio, sin_cb, 0, EV_READ); |
|
|
989 | evio_start (&wio); |
|
|
990 | |
|
|
991 | struct ev_timer t[10000]; |
|
|
992 | |
|
|
993 | #if 0 |
|
|
994 | int i; |
|
|
995 | for (i = 0; i < 10000; ++i) |
|
|
996 | { |
|
|
997 | struct ev_timer *w = t + i; |
|
|
998 | evw_init (w, ocb, i); |
|
|
999 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1000 | evtimer_start (w); |
|
|
1001 | if (drand48 () < 0.5) |
|
|
1002 | evtimer_stop (w); |
|
|
1003 | } |
|
|
1004 | #endif |
|
|
1005 | |
|
|
1006 | struct ev_timer t1; |
|
|
1007 | evtimer_init (&t1, ocb, 5, 10); |
|
|
1008 | evtimer_start (&t1); |
|
|
1009 | |
|
|
1010 | struct ev_signal sig; |
|
|
1011 | evsignal_init (&sig, scb, SIGQUIT); |
|
|
1012 | evsignal_start (&sig); |
|
|
1013 | |
|
|
1014 | struct ev_check cw; |
|
|
1015 | evcheck_init (&cw, gcb); |
|
|
1016 | evcheck_start (&cw); |
|
|
1017 | |
|
|
1018 | struct ev_idle iw; |
|
|
1019 | evidle_init (&iw, gcb); |
|
|
1020 | evidle_start (&iw); |
|
|
1021 | |
|
|
1022 | ev_loop (0); |
|
|
1023 | |
|
|
1024 | return 0; |
|
|
1025 | } |
|
|
1026 | |
|
|
1027 | #endif |
|
|
1028 | |
|
|
1029 | |
|
|
1030 | |
|
|
1031 | |
|
|