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1 | /* |
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2 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions are |
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7 | * met: |
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8 | * |
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9 | * * Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * |
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12 | * * Redistributions in binary form must reproduce the above |
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13 | * copyright notice, this list of conditions and the following |
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14 | * disclaimer in the documentation and/or other materials provided |
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15 | * with the distribution. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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19 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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20 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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21 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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22 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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23 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | */ |
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29 | #if EV_USE_CONFIG_H |
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30 | # include "config.h" |
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31 | #endif |
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32 | |
| 1 | #include <math.h> |
33 | #include <math.h> |
| 2 | #include <stdlib.h> |
34 | #include <stdlib.h> |
| 3 | #include <unistd.h> |
35 | #include <unistd.h> |
| 4 | #include <fcntl.h> |
36 | #include <fcntl.h> |
| 5 | #include <signal.h> |
37 | #include <signal.h> |
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38 | #include <stddef.h> |
| 6 | |
39 | |
| 7 | #include <stdio.h> |
40 | #include <stdio.h> |
| 8 | |
41 | |
| 9 | #include <assert.h> |
42 | #include <assert.h> |
| 10 | #include <errno.h> |
43 | #include <errno.h> |
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44 | #include <sys/types.h> |
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45 | #include <sys/wait.h> |
| 11 | #include <sys/time.h> |
46 | #include <sys/time.h> |
| 12 | #include <time.h> |
47 | #include <time.h> |
| 13 | |
48 | |
| 14 | #ifndef HAVE_MONOTONIC |
49 | #ifndef EV_USE_MONOTONIC |
| 15 | # ifdef CLOCK_MONOTONIC |
50 | # ifdef CLOCK_MONOTONIC |
| 16 | # define HAVE_MONOTONIC 1 |
51 | # define EV_USE_MONOTONIC 1 |
| 17 | # endif |
52 | # endif |
| 18 | #endif |
53 | #endif |
| 19 | |
54 | |
| 20 | #ifndef HAVE_SELECT |
55 | #ifndef EV_USE_SELECT |
| 21 | # define HAVE_SELECT 1 |
56 | # define EV_USE_SELECT 1 |
| 22 | #endif |
57 | #endif |
| 23 | |
58 | |
| 24 | #ifndef HAVE_EPOLL |
59 | #ifndef EV_USE_EPOLL |
| 25 | # define HAVE_EPOLL 0 |
60 | # define EV_USE_EPOLL 0 |
| 26 | #endif |
61 | #endif |
| 27 | |
62 | |
| 28 | #ifndef HAVE_REALTIME |
63 | #ifndef EV_USE_REALTIME |
| 29 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
64 | # define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ |
| 30 | #endif |
65 | #endif |
| 31 | |
66 | |
| 32 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
67 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
| 33 | #define MAX_BLOCKTIME 60. |
68 | #define MAX_BLOCKTIME 59.731 |
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69 | #define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */ |
| 34 | |
70 | |
| 35 | #include "ev.h" |
71 | #include "ev.h" |
| 36 | |
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| 37 | struct ev_watcher { |
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| 38 | EV_WATCHER (ev_watcher); |
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| 39 | }; |
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| 40 | |
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| 41 | struct ev_watcher_list { |
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| 42 | EV_WATCHER_LIST (ev_watcher_list); |
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| 43 | }; |
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| 44 | |
72 | |
| 45 | typedef struct ev_watcher *W; |
73 | typedef struct ev_watcher *W; |
| 46 | typedef struct ev_watcher_list *WL; |
74 | typedef struct ev_watcher_list *WL; |
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75 | typedef struct ev_watcher_time *WT; |
| 47 | |
76 | |
| 48 | static ev_tstamp now, diff; /* monotonic clock */ |
77 | static ev_tstamp now, diff; /* monotonic clock */ |
| 49 | ev_tstamp ev_now; |
78 | ev_tstamp ev_now; |
| 50 | int ev_method; |
79 | int ev_method; |
| 51 | |
80 | |
| … | |
… | |
| 58 | /*****************************************************************************/ |
87 | /*****************************************************************************/ |
| 59 | |
88 | |
| 60 | ev_tstamp |
89 | ev_tstamp |
| 61 | ev_time (void) |
90 | ev_time (void) |
| 62 | { |
91 | { |
| 63 | #if HAVE_REALTIME |
92 | #if EV_USE_REALTIME |
| 64 | struct timespec ts; |
93 | struct timespec ts; |
| 65 | clock_gettime (CLOCK_REALTIME, &ts); |
94 | clock_gettime (CLOCK_REALTIME, &ts); |
| 66 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
95 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
| 67 | #else |
96 | #else |
| 68 | struct timeval tv; |
97 | struct timeval tv; |
| … | |
… | |
| 72 | } |
101 | } |
| 73 | |
102 | |
| 74 | static ev_tstamp |
103 | static ev_tstamp |
| 75 | get_clock (void) |
104 | get_clock (void) |
| 76 | { |
105 | { |
| 77 | #if HAVE_MONOTONIC |
106 | #if EV_USE_MONOTONIC |
| 78 | if (have_monotonic) |
107 | if (have_monotonic) |
| 79 | { |
108 | { |
| 80 | struct timespec ts; |
109 | struct timespec ts; |
| 81 | clock_gettime (CLOCK_MONOTONIC, &ts); |
110 | clock_gettime (CLOCK_MONOTONIC, &ts); |
| 82 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
111 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
| … | |
… | |
| 84 | #endif |
113 | #endif |
| 85 | |
114 | |
| 86 | return ev_time (); |
115 | return ev_time (); |
| 87 | } |
116 | } |
| 88 | |
117 | |
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118 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
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119 | |
| 89 | #define array_needsize(base,cur,cnt,init) \ |
120 | #define array_needsize(base,cur,cnt,init) \ |
| 90 | if ((cnt) > cur) \ |
121 | if ((cnt) > cur) \ |
| 91 | { \ |
122 | { \ |
| 92 | int newcnt = cur ? cur << 1 : 16; \ |
123 | int newcnt = cur; \ |
| 93 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
124 | do \ |
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125 | { \ |
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126 | newcnt = array_roundsize (base, newcnt << 1); \ |
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127 | } \ |
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128 | while ((cnt) > newcnt); \ |
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129 | \ |
| 94 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
130 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
| 95 | init (base + cur, newcnt - cur); \ |
131 | init (base + cur, newcnt - cur); \ |
| 96 | cur = newcnt; \ |
132 | cur = newcnt; \ |
| 97 | } |
133 | } |
| 98 | |
134 | |
| 99 | /*****************************************************************************/ |
135 | /*****************************************************************************/ |
| 100 | |
136 | |
| 101 | typedef struct |
137 | typedef struct |
| 102 | { |
138 | { |
| 103 | struct ev_io *head; |
139 | struct ev_io *head; |
| 104 | unsigned char wev, rev; /* want, received event set */ |
140 | int events; |
| 105 | } ANFD; |
141 | } ANFD; |
| 106 | |
142 | |
| 107 | static ANFD *anfds; |
143 | static ANFD *anfds; |
| 108 | static int anfdmax; |
144 | static int anfdmax; |
| 109 | |
145 | |
| 110 | static int *fdchanges; |
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| 111 | static int fdchangemax, fdchangecnt; |
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| 112 | |
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| 113 | static void |
146 | static void |
| 114 | anfds_init (ANFD *base, int count) |
147 | anfds_init (ANFD *base, int count) |
| 115 | { |
148 | { |
| 116 | while (count--) |
149 | while (count--) |
| 117 | { |
150 | { |
| 118 | base->head = 0; |
151 | base->head = 0; |
| 119 | base->wev = base->rev = EV_NONE; |
152 | base->events = EV_NONE; |
| 120 | ++base; |
153 | ++base; |
| 121 | } |
154 | } |
| 122 | } |
155 | } |
| 123 | |
156 | |
| 124 | typedef struct |
157 | typedef struct |
| … | |
… | |
| 138 | pendings [pendingcnt - 1].w = w; |
171 | pendings [pendingcnt - 1].w = w; |
| 139 | pendings [pendingcnt - 1].events = events; |
172 | pendings [pendingcnt - 1].events = events; |
| 140 | } |
173 | } |
| 141 | |
174 | |
| 142 | static void |
175 | static void |
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176 | queue_events (W *events, int eventcnt, int type) |
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177 | { |
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178 | int i; |
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179 | |
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180 | for (i = 0; i < eventcnt; ++i) |
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181 | event (events [i], type); |
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182 | } |
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183 | |
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184 | static void |
| 143 | fd_event (int fd, int events) |
185 | fd_event (int fd, int events) |
| 144 | { |
186 | { |
| 145 | ANFD *anfd = anfds + fd; |
187 | ANFD *anfd = anfds + fd; |
| 146 | struct ev_io *w; |
188 | struct ev_io *w; |
| 147 | |
189 | |
| … | |
… | |
| 152 | if (ev) |
194 | if (ev) |
| 153 | event ((W)w, ev); |
195 | event ((W)w, ev); |
| 154 | } |
196 | } |
| 155 | } |
197 | } |
| 156 | |
198 | |
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199 | /*****************************************************************************/ |
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200 | |
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201 | static int *fdchanges; |
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202 | static int fdchangemax, fdchangecnt; |
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203 | |
| 157 | static void |
204 | static void |
| 158 | queue_events (W *events, int eventcnt, int type) |
205 | fd_reify (void) |
| 159 | { |
206 | { |
| 160 | int i; |
207 | int i; |
| 161 | |
208 | |
| 162 | for (i = 0; i < eventcnt; ++i) |
209 | for (i = 0; i < fdchangecnt; ++i) |
| 163 | event (events [i], type); |
210 | { |
| 164 | } |
211 | int fd = fdchanges [i]; |
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212 | ANFD *anfd = anfds + fd; |
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213 | struct ev_io *w; |
| 165 | |
214 | |
| 166 | /*****************************************************************************/ |
215 | int events = 0; |
| 167 | |
216 | |
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217 | for (w = anfd->head; w; w = w->next) |
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218 | events |= w->events; |
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219 | |
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220 | anfd->events &= ~EV_REIFY; |
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221 | |
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222 | if (anfd->events != events) |
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223 | { |
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224 | method_modify (fd, anfd->events, events); |
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225 | anfd->events = events; |
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226 | } |
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227 | } |
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228 | |
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229 | fdchangecnt = 0; |
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230 | } |
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231 | |
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232 | static void |
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233 | fd_change (int fd) |
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234 | { |
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235 | if (anfds [fd].events & EV_REIFY || fdchangecnt < 0) |
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236 | return; |
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237 | |
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238 | anfds [fd].events |= EV_REIFY; |
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239 | |
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240 | ++fdchangecnt; |
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241 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
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242 | fdchanges [fdchangecnt - 1] = fd; |
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243 | } |
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244 | |
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245 | /* called on EBADF to verify fds */ |
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246 | static void |
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247 | fd_recheck (void) |
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248 | { |
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249 | int fd; |
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250 | |
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251 | for (fd = 0; fd < anfdmax; ++fd) |
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252 | if (anfds [fd].events) |
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253 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
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254 | while (anfds [fd].head) |
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255 | { |
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256 | event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT); |
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257 | ev_io_stop (anfds [fd].head); |
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258 | } |
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259 | } |
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260 | |
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261 | /*****************************************************************************/ |
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262 | |
| 168 | static struct ev_timer **atimers; |
263 | static struct ev_timer **timers; |
| 169 | static int atimermax, atimercnt; |
264 | static int timermax, timercnt; |
| 170 | |
265 | |
| 171 | static struct ev_timer **rtimers; |
266 | static struct ev_periodic **periodics; |
| 172 | static int rtimermax, rtimercnt; |
267 | static int periodicmax, periodiccnt; |
| 173 | |
268 | |
| 174 | static void |
269 | static void |
| 175 | upheap (struct ev_timer **timers, int k) |
270 | upheap (WT *timers, int k) |
| 176 | { |
271 | { |
| 177 | struct ev_timer *w = timers [k]; |
272 | WT w = timers [k]; |
| 178 | |
273 | |
| 179 | while (k && timers [k >> 1]->at > w->at) |
274 | while (k && timers [k >> 1]->at > w->at) |
| 180 | { |
275 | { |
| 181 | timers [k] = timers [k >> 1]; |
276 | timers [k] = timers [k >> 1]; |
| 182 | timers [k]->active = k + 1; |
277 | timers [k]->active = k + 1; |
| … | |
… | |
| 187 | timers [k]->active = k + 1; |
282 | timers [k]->active = k + 1; |
| 188 | |
283 | |
| 189 | } |
284 | } |
| 190 | |
285 | |
| 191 | static void |
286 | static void |
| 192 | downheap (struct ev_timer **timers, int N, int k) |
287 | downheap (WT *timers, int N, int k) |
| 193 | { |
288 | { |
| 194 | struct ev_timer *w = timers [k]; |
289 | WT w = timers [k]; |
| 195 | |
290 | |
| 196 | while (k < (N >> 1)) |
291 | while (k < (N >> 1)) |
| 197 | { |
292 | { |
| 198 | int j = k << 1; |
293 | int j = k << 1; |
| 199 | |
294 | |
| … | |
… | |
| 277 | |
372 | |
| 278 | /* rather than sort out wether we really need nb, set it */ |
373 | /* rather than sort out wether we really need nb, set it */ |
| 279 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
374 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
| 280 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
375 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
| 281 | |
376 | |
| 282 | evio_set (&sigev, sigpipe [0], EV_READ); |
377 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
| 283 | evio_start (&sigev); |
378 | ev_io_start (&sigev); |
| 284 | } |
379 | } |
| 285 | |
380 | |
| 286 | /*****************************************************************************/ |
381 | /*****************************************************************************/ |
| 287 | |
382 | |
| 288 | static struct ev_idle **idles; |
383 | static struct ev_idle **idles; |
| 289 | static int idlemax, idlecnt; |
384 | static int idlemax, idlecnt; |
| 290 | |
385 | |
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386 | static struct ev_prepare **prepares; |
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387 | static int preparemax, preparecnt; |
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388 | |
| 291 | static struct ev_check **checks; |
389 | static struct ev_check **checks; |
| 292 | static int checkmax, checkcnt; |
390 | static int checkmax, checkcnt; |
| 293 | |
391 | |
| 294 | /*****************************************************************************/ |
392 | /*****************************************************************************/ |
| 295 | |
393 | |
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394 | static struct ev_child *childs [PID_HASHSIZE]; |
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395 | static struct ev_signal childev; |
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396 | |
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397 | #ifndef WCONTINUED |
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398 | # define WCONTINUED 0 |
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399 | #endif |
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400 | |
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401 | static void |
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402 | childcb (struct ev_signal *sw, int revents) |
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403 | { |
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404 | struct ev_child *w; |
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405 | int pid, status; |
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406 | |
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407 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
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408 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
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409 | if (w->pid == pid || w->pid == -1) |
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410 | { |
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411 | w->status = status; |
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412 | event ((W)w, EV_CHILD); |
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413 | } |
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414 | } |
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415 | |
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416 | /*****************************************************************************/ |
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417 | |
| 296 | #if HAVE_EPOLL |
418 | #if EV_USE_EPOLL |
| 297 | # include "ev_epoll.c" |
419 | # include "ev_epoll.c" |
| 298 | #endif |
420 | #endif |
| 299 | #if HAVE_SELECT |
421 | #if EV_USE_SELECT |
| 300 | # include "ev_select.c" |
422 | # include "ev_select.c" |
| 301 | #endif |
423 | #endif |
| 302 | |
424 | |
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425 | int |
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426 | ev_version_major (void) |
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427 | { |
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428 | return EV_VERSION_MAJOR; |
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429 | } |
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430 | |
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431 | int |
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432 | ev_version_minor (void) |
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433 | { |
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434 | return EV_VERSION_MINOR; |
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435 | } |
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436 | |
| 303 | int ev_init (int flags) |
437 | int ev_init (int flags) |
| 304 | { |
438 | { |
| 305 | #if HAVE_MONOTONIC |
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| 306 | { |
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| 307 | struct timespec ts; |
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| 308 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
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| 309 | have_monotonic = 1; |
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| 310 | } |
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| 311 | #endif |
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| 312 | |
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| 313 | ev_now = ev_time (); |
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| 314 | now = get_clock (); |
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| 315 | diff = ev_now - now; |
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| 316 | |
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| 317 | if (pipe (sigpipe)) |
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| 318 | return 0; |
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| 319 | |
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| 320 | ev_method = EVMETHOD_NONE; |
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| 321 | #if HAVE_EPOLL |
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| 322 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
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| 323 | #endif |
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| 324 | #if HAVE_SELECT |
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| 325 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
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| 326 | #endif |
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| 327 | |
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| 328 | if (ev_method) |
439 | if (!ev_method) |
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440 | { |
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441 | #if EV_USE_MONOTONIC |
| 329 | { |
442 | { |
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443 | struct timespec ts; |
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444 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
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445 | have_monotonic = 1; |
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446 | } |
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447 | #endif |
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448 | |
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449 | ev_now = ev_time (); |
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450 | now = get_clock (); |
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451 | diff = ev_now - now; |
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452 | |
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453 | if (pipe (sigpipe)) |
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454 | return 0; |
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455 | |
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456 | ev_method = EVMETHOD_NONE; |
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457 | #if EV_USE_EPOLL |
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458 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
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459 | #endif |
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460 | #if EV_USE_SELECT |
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461 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
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462 | #endif |
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463 | |
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464 | if (ev_method) |
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465 | { |
| 330 | evw_init (&sigev, sigcb, 0); |
466 | ev_watcher_init (&sigev, sigcb); |
| 331 | siginit (); |
467 | siginit (); |
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468 | |
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469 | ev_signal_init (&childev, childcb, SIGCHLD); |
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470 | ev_signal_start (&childev); |
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471 | } |
| 332 | } |
472 | } |
| 333 | |
473 | |
| 334 | return ev_method; |
474 | return ev_method; |
| 335 | } |
475 | } |
| 336 | |
476 | |
| 337 | /*****************************************************************************/ |
477 | /*****************************************************************************/ |
| 338 | |
478 | |
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479 | void |
| 339 | void ev_prefork (void) |
480 | ev_prefork (void) |
| 340 | { |
481 | { |
| 341 | /* nop */ |
482 | /* nop */ |
| 342 | } |
483 | } |
| 343 | |
484 | |
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485 | void |
| 344 | void ev_postfork_parent (void) |
486 | ev_postfork_parent (void) |
| 345 | { |
487 | { |
| 346 | /* nop */ |
488 | /* nop */ |
| 347 | } |
489 | } |
| 348 | |
490 | |
|
|
491 | void |
| 349 | void ev_postfork_child (void) |
492 | ev_postfork_child (void) |
| 350 | { |
493 | { |
| 351 | #if HAVE_EPOLL |
494 | #if EV_USE_EPOLL |
| 352 | if (ev_method == EVMETHOD_EPOLL) |
495 | if (ev_method == EVMETHOD_EPOLL) |
| 353 | epoll_postfork_child (); |
496 | epoll_postfork_child (); |
| 354 | #endif |
497 | #endif |
| 355 | |
498 | |
| 356 | evio_stop (&sigev); |
499 | ev_io_stop (&sigev); |
| 357 | close (sigpipe [0]); |
500 | close (sigpipe [0]); |
| 358 | close (sigpipe [1]); |
501 | close (sigpipe [1]); |
| 359 | pipe (sigpipe); |
502 | pipe (sigpipe); |
| 360 | siginit (); |
503 | siginit (); |
| 361 | } |
504 | } |
| 362 | |
505 | |
| 363 | /*****************************************************************************/ |
506 | /*****************************************************************************/ |
| 364 | |
507 | |
| 365 | static void |
508 | static void |
| 366 | fd_reify (void) |
|
|
| 367 | { |
|
|
| 368 | int i; |
|
|
| 369 | |
|
|
| 370 | for (i = 0; i < fdchangecnt; ++i) |
|
|
| 371 | { |
|
|
| 372 | int fd = fdchanges [i]; |
|
|
| 373 | ANFD *anfd = anfds + fd; |
|
|
| 374 | struct ev_io *w; |
|
|
| 375 | |
|
|
| 376 | int wev = 0; |
|
|
| 377 | |
|
|
| 378 | for (w = anfd->head; w; w = w->next) |
|
|
| 379 | wev |= w->events; |
|
|
| 380 | |
|
|
| 381 | if (anfd->wev != wev) |
|
|
| 382 | { |
|
|
| 383 | method_modify (fd, anfd->wev, wev); |
|
|
| 384 | anfd->wev = wev; |
|
|
| 385 | } |
|
|
| 386 | } |
|
|
| 387 | |
|
|
| 388 | fdchangecnt = 0; |
|
|
| 389 | } |
|
|
| 390 | |
|
|
| 391 | static void |
|
|
| 392 | call_pending () |
509 | call_pending (void) |
| 393 | { |
510 | { |
| 394 | int i; |
511 | while (pendingcnt) |
| 395 | |
|
|
| 396 | for (i = 0; i < pendingcnt; ++i) |
|
|
| 397 | { |
512 | { |
| 398 | ANPENDING *p = pendings + i; |
513 | ANPENDING *p = pendings + --pendingcnt; |
| 399 | |
514 | |
| 400 | if (p->w) |
515 | if (p->w) |
| 401 | { |
516 | { |
| 402 | p->w->pending = 0; |
517 | p->w->pending = 0; |
| 403 | p->w->cb (p->w, p->events); |
518 | p->w->cb (p->w, p->events); |
| 404 | } |
519 | } |
| 405 | } |
520 | } |
| 406 | |
|
|
| 407 | pendingcnt = 0; |
|
|
| 408 | } |
521 | } |
| 409 | |
522 | |
| 410 | static void |
523 | static void |
| 411 | timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now) |
524 | timers_reify (void) |
| 412 | { |
525 | { |
| 413 | while (timercnt && timers [0]->at <= now) |
526 | while (timercnt && timers [0]->at <= now) |
| 414 | { |
527 | { |
| 415 | struct ev_timer *w = timers [0]; |
528 | struct ev_timer *w = timers [0]; |
| 416 | |
529 | |
| 417 | /* first reschedule or stop timer */ |
530 | /* first reschedule or stop timer */ |
| 418 | if (w->repeat) |
531 | if (w->repeat) |
| 419 | { |
532 | { |
| 420 | if (w->is_abs) |
|
|
| 421 | w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat; |
|
|
| 422 | else |
|
|
| 423 | w->at = now + w->repeat; |
533 | w->at = now + w->repeat; |
| 424 | |
534 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
| 425 | assert (w->at > now); |
|
|
| 426 | |
|
|
| 427 | downheap (timers, timercnt, 0); |
535 | downheap ((WT *)timers, timercnt, 0); |
| 428 | } |
536 | } |
| 429 | else |
537 | else |
| 430 | { |
|
|
| 431 | evtimer_stop (w); /* nonrepeating: stop timer */ |
538 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
| 432 | --timercnt; /* maybe pass by reference instead? */ |
|
|
| 433 | } |
|
|
| 434 | |
539 | |
| 435 | event ((W)w, EV_TIMEOUT); |
540 | event ((W)w, EV_TIMEOUT); |
| 436 | } |
541 | } |
| 437 | } |
542 | } |
| 438 | |
543 | |
| 439 | static void |
544 | static void |
| 440 | time_update () |
545 | periodics_reify (void) |
|
|
546 | { |
|
|
547 | while (periodiccnt && periodics [0]->at <= ev_now) |
|
|
548 | { |
|
|
549 | struct ev_periodic *w = periodics [0]; |
|
|
550 | |
|
|
551 | /* first reschedule or stop timer */ |
|
|
552 | if (w->interval) |
|
|
553 | { |
|
|
554 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
|
|
555 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
|
|
556 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
557 | } |
|
|
558 | else |
|
|
559 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
|
|
560 | |
|
|
561 | event ((W)w, EV_TIMEOUT); |
|
|
562 | } |
|
|
563 | } |
|
|
564 | |
|
|
565 | static void |
|
|
566 | periodics_reschedule (ev_tstamp diff) |
| 441 | { |
567 | { |
| 442 | int i; |
568 | int i; |
|
|
569 | |
|
|
570 | /* adjust periodics after time jump */ |
|
|
571 | for (i = 0; i < periodiccnt; ++i) |
|
|
572 | { |
|
|
573 | struct ev_periodic *w = periodics [i]; |
|
|
574 | |
|
|
575 | if (w->interval) |
|
|
576 | { |
|
|
577 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
|
|
578 | |
|
|
579 | if (fabs (diff) >= 1e-4) |
|
|
580 | { |
|
|
581 | ev_periodic_stop (w); |
|
|
582 | ev_periodic_start (w); |
|
|
583 | |
|
|
584 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
585 | } |
|
|
586 | } |
|
|
587 | } |
|
|
588 | } |
|
|
589 | |
|
|
590 | static void |
|
|
591 | time_update (void) |
|
|
592 | { |
|
|
593 | int i; |
|
|
594 | |
| 443 | ev_now = ev_time (); |
595 | ev_now = ev_time (); |
| 444 | |
596 | |
| 445 | if (have_monotonic) |
597 | if (have_monotonic) |
| 446 | { |
598 | { |
| 447 | ev_tstamp odiff = diff; |
599 | ev_tstamp odiff = diff; |
| 448 | |
600 | |
| 449 | /* detecting time jumps is much more difficult */ |
|
|
| 450 | for (i = 2; --i; ) /* loop a few times, before making important decisions */ |
601 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
| 451 | { |
602 | { |
| 452 | now = get_clock (); |
603 | now = get_clock (); |
| 453 | diff = ev_now - now; |
604 | diff = ev_now - now; |
| 454 | |
605 | |
| 455 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
606 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
| 456 | return; /* all is well */ |
607 | return; /* all is well */ |
| 457 | |
608 | |
| 458 | ev_now = ev_time (); |
609 | ev_now = ev_time (); |
| 459 | } |
610 | } |
| 460 | |
611 | |
| 461 | /* time jump detected, reschedule atimers */ |
612 | periodics_reschedule (diff - odiff); |
| 462 | for (i = 0; i < atimercnt; ++i) |
613 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
| 463 | { |
|
|
| 464 | struct ev_timer *w = atimers [i]; |
|
|
| 465 | w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
|
|
| 466 | } |
|
|
| 467 | } |
614 | } |
| 468 | else |
615 | else |
| 469 | { |
616 | { |
| 470 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
617 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
| 471 | /* time jump detected, adjust rtimers */ |
618 | { |
|
|
619 | periodics_reschedule (ev_now - now); |
|
|
620 | |
|
|
621 | /* adjust timers. this is easy, as the offset is the same for all */ |
| 472 | for (i = 0; i < rtimercnt; ++i) |
622 | for (i = 0; i < timercnt; ++i) |
| 473 | rtimers [i]->at += ev_now - now; |
623 | timers [i]->at += diff; |
|
|
624 | } |
| 474 | |
625 | |
| 475 | now = ev_now; |
626 | now = ev_now; |
| 476 | } |
627 | } |
| 477 | } |
628 | } |
| 478 | |
629 | |
| 479 | int ev_loop_done; |
630 | int ev_loop_done; |
| 480 | |
631 | |
| 481 | void ev_loop (int flags) |
632 | void ev_loop (int flags) |
| 482 | { |
633 | { |
| 483 | double block; |
634 | double block; |
| 484 | ev_loop_done = flags & EVLOOP_ONESHOT; |
635 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
| 485 | |
|
|
| 486 | if (checkcnt) |
|
|
| 487 | { |
|
|
| 488 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
| 489 | call_pending (); |
|
|
| 490 | } |
|
|
| 491 | |
636 | |
| 492 | do |
637 | do |
| 493 | { |
638 | { |
|
|
639 | /* queue check watchers (and execute them) */ |
|
|
640 | if (preparecnt) |
|
|
641 | { |
|
|
642 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
|
|
643 | call_pending (); |
|
|
644 | } |
|
|
645 | |
| 494 | /* update fd-related kernel structures */ |
646 | /* update fd-related kernel structures */ |
| 495 | fd_reify (); |
647 | fd_reify (); |
| 496 | |
648 | |
| 497 | /* calculate blocking time */ |
649 | /* calculate blocking time */ |
|
|
650 | |
|
|
651 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
652 | always have timers, we just calculate it always */ |
|
|
653 | ev_now = ev_time (); |
|
|
654 | |
| 498 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
655 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
| 499 | block = 0.; |
656 | block = 0.; |
| 500 | else |
657 | else |
| 501 | { |
658 | { |
| 502 | block = MAX_BLOCKTIME; |
659 | block = MAX_BLOCKTIME; |
| 503 | |
660 | |
| 504 | if (rtimercnt) |
661 | if (timercnt) |
| 505 | { |
662 | { |
| 506 | ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge; |
663 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
| 507 | if (block > to) block = to; |
664 | if (block > to) block = to; |
| 508 | } |
665 | } |
| 509 | |
666 | |
| 510 | if (atimercnt) |
667 | if (periodiccnt) |
| 511 | { |
668 | { |
| 512 | ev_tstamp to = atimers [0]->at - ev_time () + method_fudge; |
669 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
| 513 | if (block > to) block = to; |
670 | if (block > to) block = to; |
| 514 | } |
671 | } |
| 515 | |
672 | |
| 516 | if (block < 0.) block = 0.; |
673 | if (block < 0.) block = 0.; |
| 517 | } |
674 | } |
| … | |
… | |
| 520 | |
677 | |
| 521 | /* update ev_now, do magic */ |
678 | /* update ev_now, do magic */ |
| 522 | time_update (); |
679 | time_update (); |
| 523 | |
680 | |
| 524 | /* queue pending timers and reschedule them */ |
681 | /* queue pending timers and reschedule them */ |
| 525 | /* absolute timers first */ |
682 | timers_reify (); /* relative timers called last */ |
| 526 | timers_reify (atimers, atimercnt, ev_now); |
683 | periodics_reify (); /* absolute timers called first */ |
| 527 | /* relative timers second */ |
|
|
| 528 | timers_reify (rtimers, rtimercnt, now); |
|
|
| 529 | |
684 | |
| 530 | /* queue idle watchers unless io or timers are pending */ |
685 | /* queue idle watchers unless io or timers are pending */ |
| 531 | if (!pendingcnt) |
686 | if (!pendingcnt) |
| 532 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
687 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
| 533 | |
688 | |
| 534 | /* queue check and possibly idle watchers */ |
689 | /* queue check watchers, to be executed first */ |
|
|
690 | if (checkcnt) |
| 535 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
691 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
| 536 | |
692 | |
| 537 | call_pending (); |
693 | call_pending (); |
| 538 | } |
694 | } |
| 539 | while (!ev_loop_done); |
695 | while (!ev_loop_done); |
|
|
696 | |
|
|
697 | if (ev_loop_done != 2) |
|
|
698 | ev_loop_done = 0; |
| 540 | } |
699 | } |
| 541 | |
700 | |
| 542 | /*****************************************************************************/ |
701 | /*****************************************************************************/ |
| 543 | |
702 | |
| 544 | static void |
703 | static void |
| … | |
… | |
| 562 | head = &(*head)->next; |
721 | head = &(*head)->next; |
| 563 | } |
722 | } |
| 564 | } |
723 | } |
| 565 | |
724 | |
| 566 | static void |
725 | static void |
|
|
726 | ev_clear (W w) |
|
|
727 | { |
|
|
728 | if (w->pending) |
|
|
729 | { |
|
|
730 | pendings [w->pending - 1].w = 0; |
|
|
731 | w->pending = 0; |
|
|
732 | } |
|
|
733 | } |
|
|
734 | |
|
|
735 | static void |
| 567 | ev_start (W w, int active) |
736 | ev_start (W w, int active) |
| 568 | { |
737 | { |
| 569 | w->pending = 0; |
|
|
| 570 | w->active = active; |
738 | w->active = active; |
| 571 | } |
739 | } |
| 572 | |
740 | |
| 573 | static void |
741 | static void |
| 574 | ev_stop (W w) |
742 | ev_stop (W w) |
| 575 | { |
743 | { |
| 576 | if (w->pending) |
|
|
| 577 | pendings [w->pending - 1].w = 0; |
|
|
| 578 | |
|
|
| 579 | w->active = 0; |
744 | w->active = 0; |
| 580 | } |
745 | } |
| 581 | |
746 | |
| 582 | /*****************************************************************************/ |
747 | /*****************************************************************************/ |
| 583 | |
748 | |
| 584 | void |
749 | void |
| 585 | evio_start (struct ev_io *w) |
750 | ev_io_start (struct ev_io *w) |
| 586 | { |
751 | { |
| 587 | if (ev_is_active (w)) |
752 | if (ev_is_active (w)) |
| 588 | return; |
753 | return; |
| 589 | |
754 | |
| 590 | int fd = w->fd; |
755 | int fd = w->fd; |
| 591 | |
756 | |
| 592 | ev_start ((W)w, 1); |
757 | ev_start ((W)w, 1); |
| 593 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
758 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
| 594 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
759 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
| 595 | |
760 | |
| 596 | ++fdchangecnt; |
761 | fd_change (fd); |
| 597 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
| 598 | fdchanges [fdchangecnt - 1] = fd; |
|
|
| 599 | } |
762 | } |
| 600 | |
763 | |
| 601 | void |
764 | void |
| 602 | evio_stop (struct ev_io *w) |
765 | ev_io_stop (struct ev_io *w) |
| 603 | { |
766 | { |
|
|
767 | ev_clear ((W)w); |
| 604 | if (!ev_is_active (w)) |
768 | if (!ev_is_active (w)) |
| 605 | return; |
769 | return; |
| 606 | |
770 | |
| 607 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
771 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
| 608 | ev_stop ((W)w); |
772 | ev_stop ((W)w); |
| 609 | |
773 | |
| 610 | ++fdchangecnt; |
774 | fd_change (w->fd); |
| 611 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
| 612 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
| 613 | } |
775 | } |
| 614 | |
776 | |
| 615 | void |
777 | void |
| 616 | evtimer_start (struct ev_timer *w) |
778 | ev_timer_start (struct ev_timer *w) |
| 617 | { |
779 | { |
|
|
780 | if (ev_is_active (w)) |
|
|
781 | return; |
|
|
782 | |
|
|
783 | w->at += now; |
|
|
784 | |
|
|
785 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
|
|
786 | |
|
|
787 | ev_start ((W)w, ++timercnt); |
|
|
788 | array_needsize (timers, timermax, timercnt, ); |
|
|
789 | timers [timercnt - 1] = w; |
|
|
790 | upheap ((WT *)timers, timercnt - 1); |
|
|
791 | } |
|
|
792 | |
|
|
793 | void |
|
|
794 | ev_timer_stop (struct ev_timer *w) |
|
|
795 | { |
|
|
796 | ev_clear ((W)w); |
| 618 | if (ev_is_active (w)) |
797 | if (!ev_is_active (w)) |
| 619 | return; |
798 | return; |
| 620 | |
799 | |
| 621 | if (w->is_abs) |
800 | if (w->active < timercnt--) |
|
|
801 | { |
|
|
802 | timers [w->active - 1] = timers [timercnt]; |
|
|
803 | downheap ((WT *)timers, timercnt, w->active - 1); |
| 622 | { |
804 | } |
| 623 | /* this formula differs from the one in timer_reify becuse we do not round up */ |
805 | |
|
|
806 | w->at = w->repeat; |
|
|
807 | |
|
|
808 | ev_stop ((W)w); |
|
|
809 | } |
|
|
810 | |
|
|
811 | void |
|
|
812 | ev_timer_again (struct ev_timer *w) |
|
|
813 | { |
|
|
814 | if (ev_is_active (w)) |
|
|
815 | { |
| 624 | if (w->repeat) |
816 | if (w->repeat) |
|
|
817 | { |
|
|
818 | w->at = now + w->repeat; |
|
|
819 | downheap ((WT *)timers, timercnt, w->active - 1); |
|
|
820 | } |
|
|
821 | else |
|
|
822 | ev_timer_stop (w); |
|
|
823 | } |
|
|
824 | else if (w->repeat) |
|
|
825 | ev_timer_start (w); |
|
|
826 | } |
|
|
827 | |
|
|
828 | void |
|
|
829 | ev_periodic_start (struct ev_periodic *w) |
|
|
830 | { |
|
|
831 | if (ev_is_active (w)) |
|
|
832 | return; |
|
|
833 | |
|
|
834 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
|
|
835 | |
|
|
836 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
837 | if (w->interval) |
| 625 | w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
838 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
| 626 | |
839 | |
| 627 | ev_start ((W)w, ++atimercnt); |
840 | ev_start ((W)w, ++periodiccnt); |
| 628 | array_needsize (atimers, atimermax, atimercnt, ); |
841 | array_needsize (periodics, periodicmax, periodiccnt, ); |
| 629 | atimers [atimercnt - 1] = w; |
842 | periodics [periodiccnt - 1] = w; |
| 630 | upheap (atimers, atimercnt - 1); |
843 | upheap ((WT *)periodics, periodiccnt - 1); |
| 631 | } |
|
|
| 632 | else |
|
|
| 633 | { |
|
|
| 634 | w->at += now; |
|
|
| 635 | |
|
|
| 636 | ev_start ((W)w, ++rtimercnt); |
|
|
| 637 | array_needsize (rtimers, rtimermax, rtimercnt, ); |
|
|
| 638 | rtimers [rtimercnt - 1] = w; |
|
|
| 639 | upheap (rtimers, rtimercnt - 1); |
|
|
| 640 | } |
|
|
| 641 | |
|
|
| 642 | } |
844 | } |
| 643 | |
845 | |
| 644 | void |
846 | void |
| 645 | evtimer_stop (struct ev_timer *w) |
847 | ev_periodic_stop (struct ev_periodic *w) |
| 646 | { |
848 | { |
|
|
849 | ev_clear ((W)w); |
| 647 | if (!ev_is_active (w)) |
850 | if (!ev_is_active (w)) |
| 648 | return; |
851 | return; |
| 649 | |
852 | |
| 650 | if (w->is_abs) |
|
|
| 651 | { |
|
|
| 652 | if (w->active < atimercnt--) |
853 | if (w->active < periodiccnt--) |
| 653 | { |
|
|
| 654 | atimers [w->active - 1] = atimers [atimercnt]; |
|
|
| 655 | downheap (atimers, atimercnt, w->active - 1); |
|
|
| 656 | } |
|
|
| 657 | } |
854 | { |
| 658 | else |
855 | periodics [w->active - 1] = periodics [periodiccnt]; |
| 659 | { |
856 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
| 660 | if (w->active < rtimercnt--) |
|
|
| 661 | { |
|
|
| 662 | rtimers [w->active - 1] = rtimers [rtimercnt]; |
|
|
| 663 | downheap (rtimers, rtimercnt, w->active - 1); |
|
|
| 664 | } |
|
|
| 665 | } |
857 | } |
| 666 | |
858 | |
| 667 | ev_stop ((W)w); |
859 | ev_stop ((W)w); |
| 668 | } |
860 | } |
| 669 | |
861 | |
| 670 | void |
862 | void |
| 671 | evsignal_start (struct ev_signal *w) |
863 | ev_signal_start (struct ev_signal *w) |
| 672 | { |
864 | { |
| 673 | if (ev_is_active (w)) |
865 | if (ev_is_active (w)) |
| 674 | return; |
866 | return; |
| 675 | |
867 | |
| 676 | ev_start ((W)w, 1); |
868 | ev_start ((W)w, 1); |
| … | |
… | |
| 686 | sigaction (w->signum, &sa, 0); |
878 | sigaction (w->signum, &sa, 0); |
| 687 | } |
879 | } |
| 688 | } |
880 | } |
| 689 | |
881 | |
| 690 | void |
882 | void |
| 691 | evsignal_stop (struct ev_signal *w) |
883 | ev_signal_stop (struct ev_signal *w) |
| 692 | { |
884 | { |
|
|
885 | ev_clear ((W)w); |
| 693 | if (!ev_is_active (w)) |
886 | if (!ev_is_active (w)) |
| 694 | return; |
887 | return; |
| 695 | |
888 | |
| 696 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
889 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
| 697 | ev_stop ((W)w); |
890 | ev_stop ((W)w); |
| 698 | |
891 | |
| 699 | if (!signals [w->signum - 1].head) |
892 | if (!signals [w->signum - 1].head) |
| 700 | signal (w->signum, SIG_DFL); |
893 | signal (w->signum, SIG_DFL); |
| 701 | } |
894 | } |
| 702 | |
895 | |
|
|
896 | void |
| 703 | void evidle_start (struct ev_idle *w) |
897 | ev_idle_start (struct ev_idle *w) |
| 704 | { |
898 | { |
| 705 | if (ev_is_active (w)) |
899 | if (ev_is_active (w)) |
| 706 | return; |
900 | return; |
| 707 | |
901 | |
| 708 | ev_start ((W)w, ++idlecnt); |
902 | ev_start ((W)w, ++idlecnt); |
| 709 | array_needsize (idles, idlemax, idlecnt, ); |
903 | array_needsize (idles, idlemax, idlecnt, ); |
| 710 | idles [idlecnt - 1] = w; |
904 | idles [idlecnt - 1] = w; |
| 711 | } |
905 | } |
| 712 | |
906 | |
|
|
907 | void |
| 713 | void evidle_stop (struct ev_idle *w) |
908 | ev_idle_stop (struct ev_idle *w) |
| 714 | { |
909 | { |
|
|
910 | ev_clear ((W)w); |
|
|
911 | if (ev_is_active (w)) |
|
|
912 | return; |
|
|
913 | |
| 715 | idles [w->active - 1] = idles [--idlecnt]; |
914 | idles [w->active - 1] = idles [--idlecnt]; |
| 716 | ev_stop ((W)w); |
915 | ev_stop ((W)w); |
| 717 | } |
916 | } |
| 718 | |
917 | |
|
|
918 | void |
|
|
919 | ev_prepare_start (struct ev_prepare *w) |
|
|
920 | { |
|
|
921 | if (ev_is_active (w)) |
|
|
922 | return; |
|
|
923 | |
|
|
924 | ev_start ((W)w, ++preparecnt); |
|
|
925 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
926 | prepares [preparecnt - 1] = w; |
|
|
927 | } |
|
|
928 | |
|
|
929 | void |
|
|
930 | ev_prepare_stop (struct ev_prepare *w) |
|
|
931 | { |
|
|
932 | ev_clear ((W)w); |
|
|
933 | if (ev_is_active (w)) |
|
|
934 | return; |
|
|
935 | |
|
|
936 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
937 | ev_stop ((W)w); |
|
|
938 | } |
|
|
939 | |
|
|
940 | void |
| 719 | void evcheck_start (struct ev_check *w) |
941 | ev_check_start (struct ev_check *w) |
| 720 | { |
942 | { |
| 721 | if (ev_is_active (w)) |
943 | if (ev_is_active (w)) |
| 722 | return; |
944 | return; |
| 723 | |
945 | |
| 724 | ev_start ((W)w, ++checkcnt); |
946 | ev_start ((W)w, ++checkcnt); |
| 725 | array_needsize (checks, checkmax, checkcnt, ); |
947 | array_needsize (checks, checkmax, checkcnt, ); |
| 726 | checks [checkcnt - 1] = w; |
948 | checks [checkcnt - 1] = w; |
| 727 | } |
949 | } |
| 728 | |
950 | |
|
|
951 | void |
| 729 | void evcheck_stop (struct ev_check *w) |
952 | ev_check_stop (struct ev_check *w) |
| 730 | { |
953 | { |
|
|
954 | ev_clear ((W)w); |
|
|
955 | if (ev_is_active (w)) |
|
|
956 | return; |
|
|
957 | |
| 731 | checks [w->active - 1] = checks [--checkcnt]; |
958 | checks [w->active - 1] = checks [--checkcnt]; |
| 732 | ev_stop ((W)w); |
959 | ev_stop ((W)w); |
| 733 | } |
960 | } |
| 734 | |
961 | |
|
|
962 | void |
|
|
963 | ev_child_start (struct ev_child *w) |
|
|
964 | { |
|
|
965 | if (ev_is_active (w)) |
|
|
966 | return; |
|
|
967 | |
|
|
968 | ev_start ((W)w, 1); |
|
|
969 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
970 | } |
|
|
971 | |
|
|
972 | void |
|
|
973 | ev_child_stop (struct ev_child *w) |
|
|
974 | { |
|
|
975 | ev_clear ((W)w); |
|
|
976 | if (ev_is_active (w)) |
|
|
977 | return; |
|
|
978 | |
|
|
979 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
980 | ev_stop ((W)w); |
|
|
981 | } |
|
|
982 | |
|
|
983 | /*****************************************************************************/ |
|
|
984 | |
|
|
985 | struct ev_once |
|
|
986 | { |
|
|
987 | struct ev_io io; |
|
|
988 | struct ev_timer to; |
|
|
989 | void (*cb)(int revents, void *arg); |
|
|
990 | void *arg; |
|
|
991 | }; |
|
|
992 | |
|
|
993 | static void |
|
|
994 | once_cb (struct ev_once *once, int revents) |
|
|
995 | { |
|
|
996 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
997 | void *arg = once->arg; |
|
|
998 | |
|
|
999 | ev_io_stop (&once->io); |
|
|
1000 | ev_timer_stop (&once->to); |
|
|
1001 | free (once); |
|
|
1002 | |
|
|
1003 | cb (revents, arg); |
|
|
1004 | } |
|
|
1005 | |
|
|
1006 | static void |
|
|
1007 | once_cb_io (struct ev_io *w, int revents) |
|
|
1008 | { |
|
|
1009 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
|
|
1010 | } |
|
|
1011 | |
|
|
1012 | static void |
|
|
1013 | once_cb_to (struct ev_timer *w, int revents) |
|
|
1014 | { |
|
|
1015 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
|
|
1016 | } |
|
|
1017 | |
|
|
1018 | void |
|
|
1019 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
|
|
1020 | { |
|
|
1021 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
|
|
1022 | |
|
|
1023 | if (!once) |
|
|
1024 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
1025 | else |
|
|
1026 | { |
|
|
1027 | once->cb = cb; |
|
|
1028 | once->arg = arg; |
|
|
1029 | |
|
|
1030 | ev_watcher_init (&once->io, once_cb_io); |
|
|
1031 | if (fd >= 0) |
|
|
1032 | { |
|
|
1033 | ev_io_set (&once->io, fd, events); |
|
|
1034 | ev_io_start (&once->io); |
|
|
1035 | } |
|
|
1036 | |
|
|
1037 | ev_watcher_init (&once->to, once_cb_to); |
|
|
1038 | if (timeout >= 0.) |
|
|
1039 | { |
|
|
1040 | ev_timer_set (&once->to, timeout, 0.); |
|
|
1041 | ev_timer_start (&once->to); |
|
|
1042 | } |
|
|
1043 | } |
|
|
1044 | } |
|
|
1045 | |
| 735 | /*****************************************************************************/ |
1046 | /*****************************************************************************/ |
| 736 | |
1047 | |
| 737 | #if 0 |
1048 | #if 0 |
| 738 | |
1049 | |
|
|
1050 | struct ev_io wio; |
|
|
1051 | |
| 739 | static void |
1052 | static void |
| 740 | sin_cb (struct ev_io *w, int revents) |
1053 | sin_cb (struct ev_io *w, int revents) |
| 741 | { |
1054 | { |
| 742 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
1055 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
| 743 | } |
1056 | } |
| 744 | |
1057 | |
| 745 | static void |
1058 | static void |
| 746 | ocb (struct ev_timer *w, int revents) |
1059 | ocb (struct ev_timer *w, int revents) |
| 747 | { |
1060 | { |
| 748 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
1061 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
| 749 | evtimer_stop (w); |
1062 | ev_timer_stop (w); |
| 750 | evtimer_start (w); |
1063 | ev_timer_start (w); |
| 751 | } |
1064 | } |
| 752 | |
1065 | |
| 753 | static void |
1066 | static void |
| 754 | scb (struct ev_signal *w, int revents) |
1067 | scb (struct ev_signal *w, int revents) |
| 755 | { |
1068 | { |
| 756 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
1069 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1070 | ev_io_stop (&wio); |
|
|
1071 | ev_io_start (&wio); |
| 757 | } |
1072 | } |
| 758 | |
1073 | |
| 759 | static void |
1074 | static void |
| 760 | gcb (struct ev_signal *w, int revents) |
1075 | gcb (struct ev_signal *w, int revents) |
| 761 | { |
1076 | { |
| 762 | fprintf (stderr, "generic %x\n", revents); |
1077 | fprintf (stderr, "generic %x\n", revents); |
|
|
1078 | |
| 763 | } |
1079 | } |
| 764 | |
1080 | |
| 765 | int main (void) |
1081 | int main (void) |
| 766 | { |
1082 | { |
| 767 | struct ev_io sin; |
|
|
| 768 | |
|
|
| 769 | ev_init (0); |
1083 | ev_init (0); |
| 770 | |
1084 | |
| 771 | evw_init (&sin, sin_cb, 55); |
|
|
| 772 | evio_set (&sin, 0, EV_READ); |
1085 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
| 773 | evio_start (&sin); |
1086 | ev_io_start (&wio); |
| 774 | |
1087 | |
| 775 | struct ev_timer t[10000]; |
1088 | struct ev_timer t[10000]; |
| 776 | |
1089 | |
| 777 | #if 0 |
1090 | #if 0 |
| 778 | int i; |
1091 | int i; |
| 779 | for (i = 0; i < 10000; ++i) |
1092 | for (i = 0; i < 10000; ++i) |
| 780 | { |
1093 | { |
| 781 | struct ev_timer *w = t + i; |
1094 | struct ev_timer *w = t + i; |
| 782 | evw_init (w, ocb, i); |
1095 | ev_watcher_init (w, ocb, i); |
| 783 | evtimer_set_abs (w, drand48 (), 0.99775533); |
1096 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
| 784 | evtimer_start (w); |
1097 | ev_timer_start (w); |
| 785 | if (drand48 () < 0.5) |
1098 | if (drand48 () < 0.5) |
| 786 | evtimer_stop (w); |
1099 | ev_timer_stop (w); |
| 787 | } |
1100 | } |
| 788 | #endif |
1101 | #endif |
| 789 | |
1102 | |
| 790 | struct ev_timer t1; |
1103 | struct ev_timer t1; |
| 791 | evw_init (&t1, ocb, 0); |
1104 | ev_timer_init (&t1, ocb, 5, 10); |
| 792 | evtimer_set_abs (&t1, 5, 10); |
|
|
| 793 | evtimer_start (&t1); |
1105 | ev_timer_start (&t1); |
| 794 | |
1106 | |
| 795 | struct ev_signal sig; |
1107 | struct ev_signal sig; |
| 796 | evw_init (&sig, scb, 65535); |
|
|
| 797 | evsignal_set (&sig, SIGQUIT); |
1108 | ev_signal_init (&sig, scb, SIGQUIT); |
| 798 | evsignal_start (&sig); |
1109 | ev_signal_start (&sig); |
| 799 | |
1110 | |
| 800 | struct ev_check cw; |
1111 | struct ev_check cw; |
| 801 | evw_init (&cw, gcb, 0); |
1112 | ev_check_init (&cw, gcb); |
| 802 | evcheck_start (&cw); |
1113 | ev_check_start (&cw); |
| 803 | |
1114 | |
| 804 | struct ev_idle iw; |
1115 | struct ev_idle iw; |
| 805 | evw_init (&iw, gcb, 0); |
1116 | ev_idle_init (&iw, gcb); |
| 806 | evidle_start (&iw); |
1117 | ev_idle_start (&iw); |
| 807 | |
1118 | |
| 808 | ev_loop (0); |
1119 | ev_loop (0); |
| 809 | |
1120 | |
| 810 | return 0; |
1121 | return 0; |
| 811 | } |
1122 | } |
