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1 | /* |
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2 | * libev event processing core, watcher management |
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3 | * |
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4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
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5 | * All rights reserved. |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions are |
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9 | * met: |
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10 | * |
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11 | * * Redistributions of source code must retain the above copyright |
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12 | * notice, this list of conditions and the following disclaimer. |
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13 | * |
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14 | * * Redistributions in binary form must reproduce the above |
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15 | * copyright notice, this list of conditions and the following |
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16 | * disclaimer in the documentation and/or other materials provided |
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17 | * with the distribution. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
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31 | #if EV_USE_CONFIG_H |
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32 | # include "config.h" |
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33 | #endif |
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34 | |
1 | #include <math.h> |
35 | #include <math.h> |
2 | #include <stdlib.h> |
36 | #include <stdlib.h> |
3 | #include <unistd.h> |
37 | #include <unistd.h> |
4 | #include <fcntl.h> |
38 | #include <fcntl.h> |
5 | #include <signal.h> |
39 | #include <signal.h> |
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40 | #include <stddef.h> |
6 | |
41 | |
7 | #include <stdio.h> |
42 | #include <stdio.h> |
8 | |
43 | |
9 | #include <assert.h> |
44 | #include <assert.h> |
10 | #include <errno.h> |
45 | #include <errno.h> |
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46 | #include <sys/types.h> |
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47 | #include <sys/wait.h> |
11 | #include <sys/time.h> |
48 | #include <sys/time.h> |
12 | #include <time.h> |
49 | #include <time.h> |
13 | |
50 | |
14 | #define HAVE_EPOLL 1 |
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15 | |
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16 | #ifndef HAVE_MONOTONIC |
51 | #ifndef EV_USE_MONOTONIC |
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52 | # define EV_USE_MONOTONIC 1 |
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53 | #endif |
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54 | |
17 | # ifdef CLOCK_MONOTONIC |
55 | #ifndef CLOCK_MONOTONIC |
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56 | # undef EV_USE_MONOTONIC |
18 | # define HAVE_MONOTONIC 1 |
57 | # define EV_USE_MONOTONIC 0 |
19 | # endif |
58 | #endif |
20 | #endif |
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21 | |
59 | |
22 | #ifndef HAVE_SELECT |
60 | #ifndef EV_USE_SELECT |
23 | # define HAVE_SELECT 1 |
61 | # define EV_USE_SELECT 1 |
24 | #endif |
62 | #endif |
25 | |
63 | |
26 | #ifndef HAVE_EPOLL |
64 | #ifndef EV_USE_EPOLL |
27 | # define HAVE_EPOLL 0 |
65 | # define EV_USE_EPOLL 0 |
28 | #endif |
66 | #endif |
29 | |
67 | |
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68 | #ifndef CLOCK_REALTIME |
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69 | # define EV_USE_REALTIME 0 |
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70 | #endif |
30 | #ifndef HAVE_REALTIME |
71 | #ifndef EV_USE_REALTIME |
31 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
72 | # define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ |
32 | #endif |
73 | #endif |
33 | |
74 | |
34 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
75 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
35 | #define MAX_BLOCKTIME 60. |
76 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */ |
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77 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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78 | #define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
36 | |
79 | |
37 | #include "ev.h" |
80 | #include "ev.h" |
38 | |
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39 | struct ev_watcher { |
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40 | EV_WATCHER (ev_watcher); |
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41 | }; |
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42 | |
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43 | struct ev_watcher_list { |
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44 | EV_WATCHER_LIST (ev_watcher_list); |
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45 | }; |
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46 | |
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47 | struct ev_watcher_time { |
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48 | EV_WATCHER_TIME (ev_watcher_time); |
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49 | }; |
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50 | |
81 | |
51 | typedef struct ev_watcher *W; |
82 | typedef struct ev_watcher *W; |
52 | typedef struct ev_watcher_list *WL; |
83 | typedef struct ev_watcher_list *WL; |
53 | typedef struct ev_watcher_time *WT; |
84 | typedef struct ev_watcher_time *WT; |
54 | |
85 | |
… | |
… | |
65 | /*****************************************************************************/ |
96 | /*****************************************************************************/ |
66 | |
97 | |
67 | ev_tstamp |
98 | ev_tstamp |
68 | ev_time (void) |
99 | ev_time (void) |
69 | { |
100 | { |
70 | #if HAVE_REALTIME |
101 | #if EV_USE_REALTIME |
71 | struct timespec ts; |
102 | struct timespec ts; |
72 | clock_gettime (CLOCK_REALTIME, &ts); |
103 | clock_gettime (CLOCK_REALTIME, &ts); |
73 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
104 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
74 | #else |
105 | #else |
75 | struct timeval tv; |
106 | struct timeval tv; |
… | |
… | |
79 | } |
110 | } |
80 | |
111 | |
81 | static ev_tstamp |
112 | static ev_tstamp |
82 | get_clock (void) |
113 | get_clock (void) |
83 | { |
114 | { |
84 | #if HAVE_MONOTONIC |
115 | #if EV_USE_MONOTONIC |
85 | if (have_monotonic) |
116 | if (have_monotonic) |
86 | { |
117 | { |
87 | struct timespec ts; |
118 | struct timespec ts; |
88 | clock_gettime (CLOCK_MONOTONIC, &ts); |
119 | clock_gettime (CLOCK_MONOTONIC, &ts); |
89 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
120 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
… | |
… | |
91 | #endif |
122 | #endif |
92 | |
123 | |
93 | return ev_time (); |
124 | return ev_time (); |
94 | } |
125 | } |
95 | |
126 | |
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127 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
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128 | |
96 | #define array_needsize(base,cur,cnt,init) \ |
129 | #define array_needsize(base,cur,cnt,init) \ |
97 | if ((cnt) > cur) \ |
130 | if ((cnt) > cur) \ |
98 | { \ |
131 | { \ |
99 | int newcnt = cur ? cur << 1 : 16; \ |
132 | int newcnt = cur; \ |
100 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
133 | do \ |
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134 | { \ |
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135 | newcnt = array_roundsize (base, newcnt << 1); \ |
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136 | } \ |
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137 | while ((cnt) > newcnt); \ |
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138 | \ |
101 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
139 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
102 | init (base + cur, newcnt - cur); \ |
140 | init (base + cur, newcnt - cur); \ |
103 | cur = newcnt; \ |
141 | cur = newcnt; \ |
104 | } |
142 | } |
105 | |
143 | |
106 | /*****************************************************************************/ |
144 | /*****************************************************************************/ |
107 | |
145 | |
108 | typedef struct |
146 | typedef struct |
109 | { |
147 | { |
110 | struct ev_io *head; |
148 | struct ev_io *head; |
111 | unsigned char wev, rev; /* want, received event set */ |
149 | unsigned char events; |
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150 | unsigned char reify; |
112 | } ANFD; |
151 | } ANFD; |
113 | |
152 | |
114 | static ANFD *anfds; |
153 | static ANFD *anfds; |
115 | static int anfdmax; |
154 | static int anfdmax; |
116 | |
155 | |
117 | static int *fdchanges; |
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118 | static int fdchangemax, fdchangecnt; |
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119 | |
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120 | static void |
156 | static void |
121 | anfds_init (ANFD *base, int count) |
157 | anfds_init (ANFD *base, int count) |
122 | { |
158 | { |
123 | while (count--) |
159 | while (count--) |
124 | { |
160 | { |
125 | base->head = 0; |
161 | base->head = 0; |
126 | base->wev = base->rev = EV_NONE; |
162 | base->events = EV_NONE; |
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163 | base->reify = 0; |
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164 | |
127 | ++base; |
165 | ++base; |
128 | } |
166 | } |
129 | } |
167 | } |
130 | |
168 | |
131 | typedef struct |
169 | typedef struct |
… | |
… | |
138 | static int pendingmax, pendingcnt; |
176 | static int pendingmax, pendingcnt; |
139 | |
177 | |
140 | static void |
178 | static void |
141 | event (W w, int events) |
179 | event (W w, int events) |
142 | { |
180 | { |
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181 | if (w->pending) |
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182 | { |
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183 | pendings [w->pending - 1].events |= events; |
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184 | return; |
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185 | } |
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186 | |
143 | w->pending = ++pendingcnt; |
187 | w->pending = ++pendingcnt; |
144 | array_needsize (pendings, pendingmax, pendingcnt, ); |
188 | array_needsize (pendings, pendingmax, pendingcnt, ); |
145 | pendings [pendingcnt - 1].w = w; |
189 | pendings [pendingcnt - 1].w = w; |
146 | pendings [pendingcnt - 1].events = events; |
190 | pendings [pendingcnt - 1].events = events; |
147 | } |
191 | } |
148 | |
192 | |
149 | static void |
193 | static void |
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194 | queue_events (W *events, int eventcnt, int type) |
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195 | { |
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196 | int i; |
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197 | |
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198 | for (i = 0; i < eventcnt; ++i) |
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199 | event (events [i], type); |
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200 | } |
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201 | |
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202 | static void |
150 | fd_event (int fd, int events) |
203 | fd_event (int fd, int events) |
151 | { |
204 | { |
152 | ANFD *anfd = anfds + fd; |
205 | ANFD *anfd = anfds + fd; |
153 | struct ev_io *w; |
206 | struct ev_io *w; |
154 | |
207 | |
… | |
… | |
159 | if (ev) |
212 | if (ev) |
160 | event ((W)w, ev); |
213 | event ((W)w, ev); |
161 | } |
214 | } |
162 | } |
215 | } |
163 | |
216 | |
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217 | /*****************************************************************************/ |
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218 | |
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219 | static int *fdchanges; |
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220 | static int fdchangemax, fdchangecnt; |
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221 | |
164 | static void |
222 | static void |
165 | queue_events (W *events, int eventcnt, int type) |
223 | fd_reify (void) |
166 | { |
224 | { |
167 | int i; |
225 | int i; |
168 | |
226 | |
169 | for (i = 0; i < eventcnt; ++i) |
227 | for (i = 0; i < fdchangecnt; ++i) |
170 | event (events [i], type); |
228 | { |
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229 | int fd = fdchanges [i]; |
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230 | ANFD *anfd = anfds + fd; |
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231 | struct ev_io *w; |
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232 | |
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233 | int events = 0; |
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234 | |
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235 | for (w = anfd->head; w; w = w->next) |
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236 | events |= w->events; |
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237 | |
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238 | anfd->reify = 0; |
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239 | |
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240 | if (anfd->events != events) |
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241 | { |
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242 | method_modify (fd, anfd->events, events); |
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243 | anfd->events = events; |
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244 | } |
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245 | } |
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246 | |
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247 | fdchangecnt = 0; |
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248 | } |
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249 | |
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250 | static void |
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251 | fd_change (int fd) |
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252 | { |
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253 | if (anfds [fd].reify || fdchangecnt < 0) |
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254 | return; |
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255 | |
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256 | anfds [fd].reify = 1; |
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257 | |
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258 | ++fdchangecnt; |
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259 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
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260 | fdchanges [fdchangecnt - 1] = fd; |
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261 | } |
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262 | |
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263 | /* called on EBADF to verify fds */ |
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264 | static void |
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265 | fd_recheck (void) |
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266 | { |
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267 | int fd; |
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268 | |
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269 | for (fd = 0; fd < anfdmax; ++fd) |
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270 | if (anfds [fd].events) |
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271 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
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272 | while (anfds [fd].head) |
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273 | { |
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274 | ev_io_stop (anfds [fd].head); |
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275 | event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE); |
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276 | } |
171 | } |
277 | } |
172 | |
278 | |
173 | /*****************************************************************************/ |
279 | /*****************************************************************************/ |
174 | |
280 | |
175 | static struct ev_timer **timers; |
281 | static struct ev_timer **timers; |
… | |
… | |
222 | /*****************************************************************************/ |
328 | /*****************************************************************************/ |
223 | |
329 | |
224 | typedef struct |
330 | typedef struct |
225 | { |
331 | { |
226 | struct ev_signal *head; |
332 | struct ev_signal *head; |
227 | sig_atomic_t gotsig; |
333 | sig_atomic_t volatile gotsig; |
228 | } ANSIG; |
334 | } ANSIG; |
229 | |
335 | |
230 | static ANSIG *signals; |
336 | static ANSIG *signals; |
231 | static int signalmax; |
337 | static int signalmax; |
232 | |
338 | |
233 | static int sigpipe [2]; |
339 | static int sigpipe [2]; |
234 | static sig_atomic_t gotsig; |
340 | static sig_atomic_t volatile gotsig; |
235 | static struct ev_io sigev; |
341 | static struct ev_io sigev; |
236 | |
342 | |
237 | static void |
343 | static void |
238 | signals_init (ANSIG *base, int count) |
344 | signals_init (ANSIG *base, int count) |
239 | { |
345 | { |
240 | while (count--) |
346 | while (count--) |
241 | { |
347 | { |
242 | base->head = 0; |
348 | base->head = 0; |
243 | base->gotsig = 0; |
349 | base->gotsig = 0; |
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350 | |
244 | ++base; |
351 | ++base; |
245 | } |
352 | } |
246 | } |
353 | } |
247 | |
354 | |
248 | static void |
355 | static void |
… | |
… | |
251 | signals [signum - 1].gotsig = 1; |
358 | signals [signum - 1].gotsig = 1; |
252 | |
359 | |
253 | if (!gotsig) |
360 | if (!gotsig) |
254 | { |
361 | { |
255 | gotsig = 1; |
362 | gotsig = 1; |
256 | write (sigpipe [1], &gotsig, 1); |
363 | write (sigpipe [1], &signum, 1); |
257 | } |
364 | } |
258 | } |
365 | } |
259 | |
366 | |
260 | static void |
367 | static void |
261 | sigcb (struct ev_io *iow, int revents) |
368 | sigcb (struct ev_io *iow, int revents) |
262 | { |
369 | { |
263 | struct ev_signal *w; |
370 | struct ev_signal *w; |
264 | int sig; |
371 | int sig; |
265 | |
372 | |
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373 | read (sigpipe [0], &revents, 1); |
266 | gotsig = 0; |
374 | gotsig = 0; |
267 | read (sigpipe [0], &revents, 1); |
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268 | |
375 | |
269 | for (sig = signalmax; sig--; ) |
376 | for (sig = signalmax; sig--; ) |
270 | if (signals [sig].gotsig) |
377 | if (signals [sig].gotsig) |
271 | { |
378 | { |
272 | signals [sig].gotsig = 0; |
379 | signals [sig].gotsig = 0; |
… | |
… | |
284 | |
391 | |
285 | /* rather than sort out wether we really need nb, set it */ |
392 | /* rather than sort out wether we really need nb, set it */ |
286 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
393 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
287 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
394 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
288 | |
395 | |
289 | evio_set (&sigev, sigpipe [0], EV_READ); |
396 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
290 | evio_start (&sigev); |
397 | ev_io_start (&sigev); |
291 | } |
398 | } |
292 | |
399 | |
293 | /*****************************************************************************/ |
400 | /*****************************************************************************/ |
294 | |
401 | |
295 | static struct ev_idle **idles; |
402 | static struct ev_idle **idles; |
296 | static int idlemax, idlecnt; |
403 | static int idlemax, idlecnt; |
297 | |
404 | |
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405 | static struct ev_prepare **prepares; |
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406 | static int preparemax, preparecnt; |
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407 | |
298 | static struct ev_check **checks; |
408 | static struct ev_check **checks; |
299 | static int checkmax, checkcnt; |
409 | static int checkmax, checkcnt; |
300 | |
410 | |
301 | /*****************************************************************************/ |
411 | /*****************************************************************************/ |
302 | |
412 | |
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413 | static struct ev_child *childs [PID_HASHSIZE]; |
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414 | static struct ev_signal childev; |
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415 | |
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416 | #ifndef WCONTINUED |
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417 | # define WCONTINUED 0 |
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418 | #endif |
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419 | |
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420 | static void |
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421 | childcb (struct ev_signal *sw, int revents) |
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422 | { |
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423 | struct ev_child *w; |
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424 | int pid, status; |
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425 | |
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426 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
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427 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
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428 | if (w->pid == pid || w->pid == -1) |
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429 | { |
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430 | w->status = status; |
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431 | event ((W)w, EV_CHILD); |
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432 | } |
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433 | } |
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434 | |
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435 | /*****************************************************************************/ |
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436 | |
303 | #if HAVE_EPOLL |
437 | #if EV_USE_EPOLL |
304 | # include "ev_epoll.c" |
438 | # include "ev_epoll.c" |
305 | #endif |
439 | #endif |
306 | #if HAVE_SELECT |
440 | #if EV_USE_SELECT |
307 | # include "ev_select.c" |
441 | # include "ev_select.c" |
308 | #endif |
442 | #endif |
309 | |
443 | |
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444 | int |
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445 | ev_version_major (void) |
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446 | { |
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447 | return EV_VERSION_MAJOR; |
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448 | } |
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449 | |
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450 | int |
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451 | ev_version_minor (void) |
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452 | { |
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453 | return EV_VERSION_MINOR; |
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454 | } |
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455 | |
310 | int ev_init (int flags) |
456 | int ev_init (int flags) |
311 | { |
457 | { |
312 | #if HAVE_MONOTONIC |
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313 | { |
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314 | struct timespec ts; |
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315 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
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316 | have_monotonic = 1; |
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317 | } |
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318 | #endif |
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319 | |
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320 | ev_now = ev_time (); |
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321 | now = get_clock (); |
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322 | diff = ev_now - now; |
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323 | |
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324 | if (pipe (sigpipe)) |
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325 | return 0; |
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326 | |
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327 | ev_method = EVMETHOD_NONE; |
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328 | #if HAVE_EPOLL |
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329 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
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330 | #endif |
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331 | #if HAVE_SELECT |
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332 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
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333 | #endif |
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334 | |
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335 | if (ev_method) |
458 | if (!ev_method) |
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459 | { |
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460 | #if EV_USE_MONOTONIC |
336 | { |
461 | { |
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462 | struct timespec ts; |
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463 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
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464 | have_monotonic = 1; |
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465 | } |
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466 | #endif |
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467 | |
|
|
468 | ev_now = ev_time (); |
|
|
469 | now = get_clock (); |
|
|
470 | diff = ev_now - now; |
|
|
471 | |
|
|
472 | if (pipe (sigpipe)) |
|
|
473 | return 0; |
|
|
474 | |
|
|
475 | ev_method = EVMETHOD_NONE; |
|
|
476 | #if EV_USE_EPOLL |
|
|
477 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
478 | #endif |
|
|
479 | #if EV_USE_SELECT |
|
|
480 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
481 | #endif |
|
|
482 | |
|
|
483 | if (ev_method) |
|
|
484 | { |
337 | evw_init (&sigev, sigcb); |
485 | ev_watcher_init (&sigev, sigcb); |
338 | siginit (); |
486 | siginit (); |
|
|
487 | |
|
|
488 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
489 | ev_signal_start (&childev); |
|
|
490 | } |
339 | } |
491 | } |
340 | |
492 | |
341 | return ev_method; |
493 | return ev_method; |
342 | } |
494 | } |
343 | |
495 | |
344 | /*****************************************************************************/ |
496 | /*****************************************************************************/ |
345 | |
497 | |
346 | void ev_prefork (void) |
498 | void |
|
|
499 | ev_fork_prepare (void) |
347 | { |
500 | { |
348 | /* nop */ |
501 | /* nop */ |
349 | } |
502 | } |
350 | |
503 | |
|
|
504 | void |
351 | void ev_postfork_parent (void) |
505 | ev_fork_parent (void) |
352 | { |
506 | { |
353 | /* nop */ |
507 | /* nop */ |
354 | } |
508 | } |
355 | |
509 | |
|
|
510 | void |
356 | void ev_postfork_child (void) |
511 | ev_fork_child (void) |
357 | { |
512 | { |
358 | #if HAVE_EPOLL |
513 | #if EV_USE_EPOLL |
359 | if (ev_method == EVMETHOD_EPOLL) |
514 | if (ev_method == EVMETHOD_EPOLL) |
360 | epoll_postfork_child (); |
515 | epoll_postfork_child (); |
361 | #endif |
516 | #endif |
362 | |
517 | |
363 | evio_stop (&sigev); |
518 | ev_io_stop (&sigev); |
364 | close (sigpipe [0]); |
519 | close (sigpipe [0]); |
365 | close (sigpipe [1]); |
520 | close (sigpipe [1]); |
366 | pipe (sigpipe); |
521 | pipe (sigpipe); |
367 | siginit (); |
522 | siginit (); |
368 | } |
523 | } |
369 | |
524 | |
370 | /*****************************************************************************/ |
525 | /*****************************************************************************/ |
371 | |
526 | |
372 | static void |
527 | static void |
373 | fd_reify (void) |
|
|
374 | { |
|
|
375 | int i; |
|
|
376 | |
|
|
377 | for (i = 0; i < fdchangecnt; ++i) |
|
|
378 | { |
|
|
379 | int fd = fdchanges [i]; |
|
|
380 | ANFD *anfd = anfds + fd; |
|
|
381 | struct ev_io *w; |
|
|
382 | |
|
|
383 | int wev = 0; |
|
|
384 | |
|
|
385 | for (w = anfd->head; w; w = w->next) |
|
|
386 | wev |= w->events; |
|
|
387 | |
|
|
388 | if (anfd->wev != wev) |
|
|
389 | { |
|
|
390 | method_modify (fd, anfd->wev, wev); |
|
|
391 | anfd->wev = wev; |
|
|
392 | } |
|
|
393 | } |
|
|
394 | |
|
|
395 | fdchangecnt = 0; |
|
|
396 | } |
|
|
397 | |
|
|
398 | static void |
|
|
399 | call_pending () |
528 | call_pending (void) |
400 | { |
529 | { |
401 | int i; |
530 | while (pendingcnt) |
402 | |
|
|
403 | for (i = 0; i < pendingcnt; ++i) |
|
|
404 | { |
531 | { |
405 | ANPENDING *p = pendings + i; |
532 | ANPENDING *p = pendings + --pendingcnt; |
406 | |
533 | |
407 | if (p->w) |
534 | if (p->w) |
408 | { |
535 | { |
409 | p->w->pending = 0; |
536 | p->w->pending = 0; |
410 | p->w->cb (p->w, p->events); |
537 | p->w->cb (p->w, p->events); |
411 | } |
538 | } |
412 | } |
539 | } |
413 | |
|
|
414 | pendingcnt = 0; |
|
|
415 | } |
540 | } |
416 | |
541 | |
417 | static void |
542 | static void |
418 | timers_reify () |
543 | timers_reify (void) |
419 | { |
544 | { |
420 | while (timercnt && timers [0]->at <= now) |
545 | while (timercnt && timers [0]->at <= now) |
421 | { |
546 | { |
422 | struct ev_timer *w = timers [0]; |
547 | struct ev_timer *w = timers [0]; |
423 | |
548 | |
424 | /* first reschedule or stop timer */ |
549 | /* first reschedule or stop timer */ |
425 | if (w->repeat) |
550 | if (w->repeat) |
426 | { |
551 | { |
|
|
552 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
427 | w->at = now + w->repeat; |
553 | w->at = now + w->repeat; |
428 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
|
|
429 | downheap ((WT *)timers, timercnt, 0); |
554 | downheap ((WT *)timers, timercnt, 0); |
430 | } |
555 | } |
431 | else |
556 | else |
432 | evtimer_stop (w); /* nonrepeating: stop timer */ |
557 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
433 | |
558 | |
434 | event ((W)w, EV_TIMEOUT); |
559 | event ((W)w, EV_TIMEOUT); |
435 | } |
560 | } |
436 | } |
561 | } |
437 | |
562 | |
438 | static void |
563 | static void |
439 | periodics_reify () |
564 | periodics_reify (void) |
440 | { |
565 | { |
441 | while (periodiccnt && periodics [0]->at <= ev_now) |
566 | while (periodiccnt && periodics [0]->at <= ev_now) |
442 | { |
567 | { |
443 | struct ev_periodic *w = periodics [0]; |
568 | struct ev_periodic *w = periodics [0]; |
444 | |
569 | |
445 | /* first reschedule or stop timer */ |
570 | /* first reschedule or stop timer */ |
446 | if (w->interval) |
571 | if (w->interval) |
447 | { |
572 | { |
448 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
573 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
449 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
574 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
450 | downheap ((WT *)periodics, periodiccnt, 0); |
575 | downheap ((WT *)periodics, periodiccnt, 0); |
451 | } |
576 | } |
452 | else |
577 | else |
453 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
578 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
454 | |
579 | |
455 | event ((W)w, EV_TIMEOUT); |
580 | event ((W)w, EV_PERIODIC); |
456 | } |
581 | } |
457 | } |
582 | } |
458 | |
583 | |
459 | static void |
584 | static void |
460 | time_jump (ev_tstamp diff) |
585 | periodics_reschedule (ev_tstamp diff) |
461 | { |
586 | { |
462 | int i; |
587 | int i; |
463 | |
588 | |
464 | /* adjust periodics */ |
589 | /* adjust periodics after time jump */ |
465 | for (i = 0; i < periodiccnt; ++i) |
590 | for (i = 0; i < periodiccnt; ++i) |
466 | { |
591 | { |
467 | struct ev_periodic *w = periodics [i]; |
592 | struct ev_periodic *w = periodics [i]; |
468 | |
593 | |
469 | if (w->interval) |
594 | if (w->interval) |
470 | { |
595 | { |
471 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
596 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
472 | |
597 | |
473 | if (fabs (diff) >= 1e-4) |
598 | if (fabs (diff) >= 1e-4) |
474 | { |
599 | { |
475 | evperiodic_stop (w); |
600 | ev_periodic_stop (w); |
476 | evperiodic_start (w); |
601 | ev_periodic_start (w); |
477 | |
602 | |
478 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
603 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
479 | } |
604 | } |
480 | } |
605 | } |
481 | } |
606 | } |
482 | |
|
|
483 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
484 | for (i = 0; i < timercnt; ++i) |
|
|
485 | timers [i]->at += diff; |
|
|
486 | } |
607 | } |
487 | |
608 | |
488 | static void |
609 | static void |
489 | time_update () |
610 | time_update (void) |
490 | { |
611 | { |
491 | int i; |
612 | int i; |
492 | |
613 | |
493 | ev_now = ev_time (); |
614 | ev_now = ev_time (); |
494 | |
615 | |
… | |
… | |
505 | return; /* all is well */ |
626 | return; /* all is well */ |
506 | |
627 | |
507 | ev_now = ev_time (); |
628 | ev_now = ev_time (); |
508 | } |
629 | } |
509 | |
630 | |
510 | time_jump (diff - odiff); |
631 | periodics_reschedule (diff - odiff); |
|
|
632 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
511 | } |
633 | } |
512 | else |
634 | else |
513 | { |
635 | { |
514 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
636 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
515 | time_jump (ev_now - now); |
637 | { |
|
|
638 | periodics_reschedule (ev_now - now); |
|
|
639 | |
|
|
640 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
641 | for (i = 0; i < timercnt; ++i) |
|
|
642 | timers [i]->at += diff; |
|
|
643 | } |
516 | |
644 | |
517 | now = ev_now; |
645 | now = ev_now; |
518 | } |
646 | } |
519 | } |
647 | } |
520 | |
648 | |
521 | int ev_loop_done; |
649 | int ev_loop_done; |
522 | |
650 | |
523 | void ev_loop (int flags) |
651 | void ev_loop (int flags) |
524 | { |
652 | { |
525 | double block; |
653 | double block; |
526 | ev_loop_done = flags & EVLOOP_ONESHOT; |
654 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
527 | |
|
|
528 | if (checkcnt) |
|
|
529 | { |
|
|
530 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
531 | call_pending (); |
|
|
532 | } |
|
|
533 | |
655 | |
534 | do |
656 | do |
535 | { |
657 | { |
|
|
658 | /* queue check watchers (and execute them) */ |
|
|
659 | if (preparecnt) |
|
|
660 | { |
|
|
661 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
|
|
662 | call_pending (); |
|
|
663 | } |
|
|
664 | |
536 | /* update fd-related kernel structures */ |
665 | /* update fd-related kernel structures */ |
537 | fd_reify (); |
666 | fd_reify (); |
538 | |
667 | |
539 | /* calculate blocking time */ |
668 | /* calculate blocking time */ |
540 | |
669 | |
541 | /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
670 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
671 | always have timers, we just calculate it always */ |
542 | ev_now = ev_time (); |
672 | ev_now = ev_time (); |
543 | |
673 | |
544 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
674 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
545 | block = 0.; |
675 | block = 0.; |
546 | else |
676 | else |
547 | { |
677 | { |
548 | block = MAX_BLOCKTIME; |
678 | block = MAX_BLOCKTIME; |
549 | |
679 | |
550 | if (timercnt) |
680 | if (timercnt) |
551 | { |
681 | { |
552 | ev_tstamp to = timers [0]->at - get_clock () + method_fudge; |
682 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
553 | if (block > to) block = to; |
683 | if (block > to) block = to; |
554 | } |
684 | } |
555 | |
685 | |
556 | if (periodiccnt) |
686 | if (periodiccnt) |
557 | { |
687 | { |
… | |
… | |
566 | |
696 | |
567 | /* update ev_now, do magic */ |
697 | /* update ev_now, do magic */ |
568 | time_update (); |
698 | time_update (); |
569 | |
699 | |
570 | /* queue pending timers and reschedule them */ |
700 | /* queue pending timers and reschedule them */ |
|
|
701 | timers_reify (); /* relative timers called last */ |
571 | periodics_reify (); /* absolute timers first */ |
702 | periodics_reify (); /* absolute timers called first */ |
572 | timers_reify (); /* relative timers second */ |
|
|
573 | |
703 | |
574 | /* queue idle watchers unless io or timers are pending */ |
704 | /* queue idle watchers unless io or timers are pending */ |
575 | if (!pendingcnt) |
705 | if (!pendingcnt) |
576 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
706 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
577 | |
707 | |
578 | /* queue check and possibly idle watchers */ |
708 | /* queue check watchers, to be executed first */ |
|
|
709 | if (checkcnt) |
579 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
710 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
580 | |
711 | |
581 | call_pending (); |
712 | call_pending (); |
582 | } |
713 | } |
583 | while (!ev_loop_done); |
714 | while (!ev_loop_done); |
|
|
715 | |
|
|
716 | if (ev_loop_done != 2) |
|
|
717 | ev_loop_done = 0; |
584 | } |
718 | } |
585 | |
719 | |
586 | /*****************************************************************************/ |
720 | /*****************************************************************************/ |
587 | |
721 | |
588 | static void |
722 | static void |
… | |
… | |
606 | head = &(*head)->next; |
740 | head = &(*head)->next; |
607 | } |
741 | } |
608 | } |
742 | } |
609 | |
743 | |
610 | static void |
744 | static void |
|
|
745 | ev_clear_pending (W w) |
|
|
746 | { |
|
|
747 | if (w->pending) |
|
|
748 | { |
|
|
749 | pendings [w->pending - 1].w = 0; |
|
|
750 | w->pending = 0; |
|
|
751 | } |
|
|
752 | } |
|
|
753 | |
|
|
754 | static void |
611 | ev_start (W w, int active) |
755 | ev_start (W w, int active) |
612 | { |
756 | { |
613 | w->pending = 0; |
|
|
614 | w->active = active; |
757 | w->active = active; |
615 | } |
758 | } |
616 | |
759 | |
617 | static void |
760 | static void |
618 | ev_stop (W w) |
761 | ev_stop (W w) |
619 | { |
762 | { |
620 | if (w->pending) |
|
|
621 | pendings [w->pending - 1].w = 0; |
|
|
622 | |
|
|
623 | w->active = 0; |
763 | w->active = 0; |
624 | } |
764 | } |
625 | |
765 | |
626 | /*****************************************************************************/ |
766 | /*****************************************************************************/ |
627 | |
767 | |
628 | void |
768 | void |
629 | evio_start (struct ev_io *w) |
769 | ev_io_start (struct ev_io *w) |
630 | { |
770 | { |
631 | if (ev_is_active (w)) |
|
|
632 | return; |
|
|
633 | |
|
|
634 | int fd = w->fd; |
771 | int fd = w->fd; |
|
|
772 | |
|
|
773 | if (ev_is_active (w)) |
|
|
774 | return; |
|
|
775 | |
|
|
776 | assert (("ev_io_start called with negative fd", fd >= 0)); |
635 | |
777 | |
636 | ev_start ((W)w, 1); |
778 | ev_start ((W)w, 1); |
637 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
779 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
638 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
780 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
639 | |
781 | |
640 | ++fdchangecnt; |
782 | fd_change (fd); |
641 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
642 | fdchanges [fdchangecnt - 1] = fd; |
|
|
643 | } |
783 | } |
644 | |
784 | |
645 | void |
785 | void |
646 | evio_stop (struct ev_io *w) |
786 | ev_io_stop (struct ev_io *w) |
647 | { |
787 | { |
|
|
788 | ev_clear_pending ((W)w); |
648 | if (!ev_is_active (w)) |
789 | if (!ev_is_active (w)) |
649 | return; |
790 | return; |
650 | |
791 | |
651 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
792 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
652 | ev_stop ((W)w); |
793 | ev_stop ((W)w); |
653 | |
794 | |
654 | ++fdchangecnt; |
795 | fd_change (w->fd); |
655 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
656 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
657 | } |
796 | } |
658 | |
797 | |
659 | |
|
|
660 | void |
798 | void |
661 | evtimer_start (struct ev_timer *w) |
799 | ev_timer_start (struct ev_timer *w) |
662 | { |
800 | { |
663 | if (ev_is_active (w)) |
801 | if (ev_is_active (w)) |
664 | return; |
802 | return; |
665 | |
803 | |
666 | w->at += now; |
804 | w->at += now; |
|
|
805 | |
|
|
806 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
667 | |
807 | |
668 | ev_start ((W)w, ++timercnt); |
808 | ev_start ((W)w, ++timercnt); |
669 | array_needsize (timers, timermax, timercnt, ); |
809 | array_needsize (timers, timermax, timercnt, ); |
670 | timers [timercnt - 1] = w; |
810 | timers [timercnt - 1] = w; |
671 | upheap ((WT *)timers, timercnt - 1); |
811 | upheap ((WT *)timers, timercnt - 1); |
672 | } |
812 | } |
673 | |
813 | |
674 | void |
814 | void |
675 | evtimer_stop (struct ev_timer *w) |
815 | ev_timer_stop (struct ev_timer *w) |
676 | { |
816 | { |
|
|
817 | ev_clear_pending ((W)w); |
677 | if (!ev_is_active (w)) |
818 | if (!ev_is_active (w)) |
678 | return; |
819 | return; |
679 | |
820 | |
680 | if (w->active < timercnt--) |
821 | if (w->active < timercnt--) |
681 | { |
822 | { |
682 | timers [w->active - 1] = timers [timercnt]; |
823 | timers [w->active - 1] = timers [timercnt]; |
683 | downheap ((WT *)timers, timercnt, w->active - 1); |
824 | downheap ((WT *)timers, timercnt, w->active - 1); |
684 | } |
825 | } |
685 | |
826 | |
|
|
827 | w->at = w->repeat; |
|
|
828 | |
686 | ev_stop ((W)w); |
829 | ev_stop ((W)w); |
687 | } |
830 | } |
688 | |
831 | |
689 | void |
832 | void |
|
|
833 | ev_timer_again (struct ev_timer *w) |
|
|
834 | { |
|
|
835 | if (ev_is_active (w)) |
|
|
836 | { |
|
|
837 | if (w->repeat) |
|
|
838 | { |
|
|
839 | w->at = now + w->repeat; |
|
|
840 | downheap ((WT *)timers, timercnt, w->active - 1); |
|
|
841 | } |
|
|
842 | else |
|
|
843 | ev_timer_stop (w); |
|
|
844 | } |
|
|
845 | else if (w->repeat) |
|
|
846 | ev_timer_start (w); |
|
|
847 | } |
|
|
848 | |
|
|
849 | void |
690 | evperiodic_start (struct ev_periodic *w) |
850 | ev_periodic_start (struct ev_periodic *w) |
691 | { |
851 | { |
692 | if (ev_is_active (w)) |
852 | if (ev_is_active (w)) |
693 | return; |
853 | return; |
|
|
854 | |
|
|
855 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
694 | |
856 | |
695 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
857 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
696 | if (w->interval) |
858 | if (w->interval) |
697 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
859 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
698 | |
860 | |
… | |
… | |
701 | periodics [periodiccnt - 1] = w; |
863 | periodics [periodiccnt - 1] = w; |
702 | upheap ((WT *)periodics, periodiccnt - 1); |
864 | upheap ((WT *)periodics, periodiccnt - 1); |
703 | } |
865 | } |
704 | |
866 | |
705 | void |
867 | void |
706 | evperiodic_stop (struct ev_periodic *w) |
868 | ev_periodic_stop (struct ev_periodic *w) |
707 | { |
869 | { |
|
|
870 | ev_clear_pending ((W)w); |
708 | if (!ev_is_active (w)) |
871 | if (!ev_is_active (w)) |
709 | return; |
872 | return; |
710 | |
873 | |
711 | if (w->active < periodiccnt--) |
874 | if (w->active < periodiccnt--) |
712 | { |
875 | { |
… | |
… | |
716 | |
879 | |
717 | ev_stop ((W)w); |
880 | ev_stop ((W)w); |
718 | } |
881 | } |
719 | |
882 | |
720 | void |
883 | void |
721 | evsignal_start (struct ev_signal *w) |
884 | ev_signal_start (struct ev_signal *w) |
722 | { |
885 | { |
723 | if (ev_is_active (w)) |
886 | if (ev_is_active (w)) |
724 | return; |
887 | return; |
|
|
888 | |
|
|
889 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
725 | |
890 | |
726 | ev_start ((W)w, 1); |
891 | ev_start ((W)w, 1); |
727 | array_needsize (signals, signalmax, w->signum, signals_init); |
892 | array_needsize (signals, signalmax, w->signum, signals_init); |
728 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
893 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
729 | |
894 | |
… | |
… | |
736 | sigaction (w->signum, &sa, 0); |
901 | sigaction (w->signum, &sa, 0); |
737 | } |
902 | } |
738 | } |
903 | } |
739 | |
904 | |
740 | void |
905 | void |
741 | evsignal_stop (struct ev_signal *w) |
906 | ev_signal_stop (struct ev_signal *w) |
742 | { |
907 | { |
|
|
908 | ev_clear_pending ((W)w); |
743 | if (!ev_is_active (w)) |
909 | if (!ev_is_active (w)) |
744 | return; |
910 | return; |
745 | |
911 | |
746 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
912 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
747 | ev_stop ((W)w); |
913 | ev_stop ((W)w); |
748 | |
914 | |
749 | if (!signals [w->signum - 1].head) |
915 | if (!signals [w->signum - 1].head) |
750 | signal (w->signum, SIG_DFL); |
916 | signal (w->signum, SIG_DFL); |
751 | } |
917 | } |
752 | |
918 | |
|
|
919 | void |
753 | void evidle_start (struct ev_idle *w) |
920 | ev_idle_start (struct ev_idle *w) |
754 | { |
921 | { |
755 | if (ev_is_active (w)) |
922 | if (ev_is_active (w)) |
756 | return; |
923 | return; |
757 | |
924 | |
758 | ev_start ((W)w, ++idlecnt); |
925 | ev_start ((W)w, ++idlecnt); |
759 | array_needsize (idles, idlemax, idlecnt, ); |
926 | array_needsize (idles, idlemax, idlecnt, ); |
760 | idles [idlecnt - 1] = w; |
927 | idles [idlecnt - 1] = w; |
761 | } |
928 | } |
762 | |
929 | |
|
|
930 | void |
763 | void evidle_stop (struct ev_idle *w) |
931 | ev_idle_stop (struct ev_idle *w) |
764 | { |
932 | { |
|
|
933 | ev_clear_pending ((W)w); |
|
|
934 | if (ev_is_active (w)) |
|
|
935 | return; |
|
|
936 | |
765 | idles [w->active - 1] = idles [--idlecnt]; |
937 | idles [w->active - 1] = idles [--idlecnt]; |
766 | ev_stop ((W)w); |
938 | ev_stop ((W)w); |
767 | } |
939 | } |
768 | |
940 | |
|
|
941 | void |
|
|
942 | ev_prepare_start (struct ev_prepare *w) |
|
|
943 | { |
|
|
944 | if (ev_is_active (w)) |
|
|
945 | return; |
|
|
946 | |
|
|
947 | ev_start ((W)w, ++preparecnt); |
|
|
948 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
949 | prepares [preparecnt - 1] = w; |
|
|
950 | } |
|
|
951 | |
|
|
952 | void |
|
|
953 | ev_prepare_stop (struct ev_prepare *w) |
|
|
954 | { |
|
|
955 | ev_clear_pending ((W)w); |
|
|
956 | if (ev_is_active (w)) |
|
|
957 | return; |
|
|
958 | |
|
|
959 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
960 | ev_stop ((W)w); |
|
|
961 | } |
|
|
962 | |
|
|
963 | void |
769 | void evcheck_start (struct ev_check *w) |
964 | ev_check_start (struct ev_check *w) |
770 | { |
965 | { |
771 | if (ev_is_active (w)) |
966 | if (ev_is_active (w)) |
772 | return; |
967 | return; |
773 | |
968 | |
774 | ev_start ((W)w, ++checkcnt); |
969 | ev_start ((W)w, ++checkcnt); |
775 | array_needsize (checks, checkmax, checkcnt, ); |
970 | array_needsize (checks, checkmax, checkcnt, ); |
776 | checks [checkcnt - 1] = w; |
971 | checks [checkcnt - 1] = w; |
777 | } |
972 | } |
778 | |
973 | |
|
|
974 | void |
779 | void evcheck_stop (struct ev_check *w) |
975 | ev_check_stop (struct ev_check *w) |
780 | { |
976 | { |
|
|
977 | ev_clear_pending ((W)w); |
|
|
978 | if (ev_is_active (w)) |
|
|
979 | return; |
|
|
980 | |
781 | checks [w->active - 1] = checks [--checkcnt]; |
981 | checks [w->active - 1] = checks [--checkcnt]; |
782 | ev_stop ((W)w); |
982 | ev_stop ((W)w); |
783 | } |
983 | } |
784 | |
984 | |
785 | /*****************************************************************************/ |
985 | void |
|
|
986 | ev_child_start (struct ev_child *w) |
|
|
987 | { |
|
|
988 | if (ev_is_active (w)) |
|
|
989 | return; |
786 | |
990 | |
|
|
991 | ev_start ((W)w, 1); |
|
|
992 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
993 | } |
|
|
994 | |
|
|
995 | void |
|
|
996 | ev_child_stop (struct ev_child *w) |
|
|
997 | { |
|
|
998 | ev_clear_pending ((W)w); |
|
|
999 | if (ev_is_active (w)) |
|
|
1000 | return; |
|
|
1001 | |
|
|
1002 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1003 | ev_stop ((W)w); |
|
|
1004 | } |
|
|
1005 | |
|
|
1006 | /*****************************************************************************/ |
|
|
1007 | |
|
|
1008 | struct ev_once |
|
|
1009 | { |
|
|
1010 | struct ev_io io; |
|
|
1011 | struct ev_timer to; |
|
|
1012 | void (*cb)(int revents, void *arg); |
|
|
1013 | void *arg; |
|
|
1014 | }; |
|
|
1015 | |
|
|
1016 | static void |
|
|
1017 | once_cb (struct ev_once *once, int revents) |
|
|
1018 | { |
|
|
1019 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
1020 | void *arg = once->arg; |
|
|
1021 | |
|
|
1022 | ev_io_stop (&once->io); |
|
|
1023 | ev_timer_stop (&once->to); |
|
|
1024 | free (once); |
|
|
1025 | |
|
|
1026 | cb (revents, arg); |
|
|
1027 | } |
|
|
1028 | |
|
|
1029 | static void |
|
|
1030 | once_cb_io (struct ev_io *w, int revents) |
|
|
1031 | { |
|
|
1032 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
|
|
1033 | } |
|
|
1034 | |
|
|
1035 | static void |
|
|
1036 | once_cb_to (struct ev_timer *w, int revents) |
|
|
1037 | { |
|
|
1038 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
|
|
1039 | } |
|
|
1040 | |
|
|
1041 | void |
|
|
1042 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
|
|
1043 | { |
|
|
1044 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
|
|
1045 | |
|
|
1046 | if (!once) |
|
|
1047 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
1048 | else |
|
|
1049 | { |
|
|
1050 | once->cb = cb; |
|
|
1051 | once->arg = arg; |
|
|
1052 | |
|
|
1053 | ev_watcher_init (&once->io, once_cb_io); |
|
|
1054 | if (fd >= 0) |
|
|
1055 | { |
|
|
1056 | ev_io_set (&once->io, fd, events); |
|
|
1057 | ev_io_start (&once->io); |
|
|
1058 | } |
|
|
1059 | |
|
|
1060 | ev_watcher_init (&once->to, once_cb_to); |
|
|
1061 | if (timeout >= 0.) |
|
|
1062 | { |
|
|
1063 | ev_timer_set (&once->to, timeout, 0.); |
|
|
1064 | ev_timer_start (&once->to); |
|
|
1065 | } |
|
|
1066 | } |
|
|
1067 | } |
|
|
1068 | |
|
|
1069 | /*****************************************************************************/ |
|
|
1070 | |
787 | #if 1 |
1071 | #if 0 |
788 | |
1072 | |
789 | struct ev_io wio; |
1073 | struct ev_io wio; |
790 | |
1074 | |
791 | static void |
1075 | static void |
792 | sin_cb (struct ev_io *w, int revents) |
1076 | sin_cb (struct ev_io *w, int revents) |
… | |
… | |
796 | |
1080 | |
797 | static void |
1081 | static void |
798 | ocb (struct ev_timer *w, int revents) |
1082 | ocb (struct ev_timer *w, int revents) |
799 | { |
1083 | { |
800 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
1084 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
801 | evtimer_stop (w); |
1085 | ev_timer_stop (w); |
802 | evtimer_start (w); |
1086 | ev_timer_start (w); |
803 | } |
1087 | } |
804 | |
1088 | |
805 | static void |
1089 | static void |
806 | scb (struct ev_signal *w, int revents) |
1090 | scb (struct ev_signal *w, int revents) |
807 | { |
1091 | { |
808 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
1092 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
809 | evio_stop (&wio); |
1093 | ev_io_stop (&wio); |
810 | evio_start (&wio); |
1094 | ev_io_start (&wio); |
811 | } |
1095 | } |
812 | |
1096 | |
813 | static void |
1097 | static void |
814 | gcb (struct ev_signal *w, int revents) |
1098 | gcb (struct ev_signal *w, int revents) |
815 | { |
1099 | { |
… | |
… | |
819 | |
1103 | |
820 | int main (void) |
1104 | int main (void) |
821 | { |
1105 | { |
822 | ev_init (0); |
1106 | ev_init (0); |
823 | |
1107 | |
824 | evio_init (&wio, sin_cb, 0, EV_READ); |
1108 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
825 | evio_start (&wio); |
1109 | ev_io_start (&wio); |
826 | |
1110 | |
827 | struct ev_timer t[10000]; |
1111 | struct ev_timer t[10000]; |
828 | |
1112 | |
829 | #if 0 |
1113 | #if 0 |
830 | int i; |
1114 | int i; |
831 | for (i = 0; i < 10000; ++i) |
1115 | for (i = 0; i < 10000; ++i) |
832 | { |
1116 | { |
833 | struct ev_timer *w = t + i; |
1117 | struct ev_timer *w = t + i; |
834 | evw_init (w, ocb, i); |
1118 | ev_watcher_init (w, ocb, i); |
835 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
1119 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
836 | evtimer_start (w); |
1120 | ev_timer_start (w); |
837 | if (drand48 () < 0.5) |
1121 | if (drand48 () < 0.5) |
838 | evtimer_stop (w); |
1122 | ev_timer_stop (w); |
839 | } |
1123 | } |
840 | #endif |
1124 | #endif |
841 | |
1125 | |
842 | struct ev_timer t1; |
1126 | struct ev_timer t1; |
843 | evtimer_init (&t1, ocb, 5, 10); |
1127 | ev_timer_init (&t1, ocb, 5, 10); |
844 | evtimer_start (&t1); |
1128 | ev_timer_start (&t1); |
845 | |
1129 | |
846 | struct ev_signal sig; |
1130 | struct ev_signal sig; |
847 | evsignal_init (&sig, scb, SIGQUIT); |
1131 | ev_signal_init (&sig, scb, SIGQUIT); |
848 | evsignal_start (&sig); |
1132 | ev_signal_start (&sig); |
849 | |
1133 | |
850 | struct ev_check cw; |
1134 | struct ev_check cw; |
851 | evcheck_init (&cw, gcb); |
1135 | ev_check_init (&cw, gcb); |
852 | evcheck_start (&cw); |
1136 | ev_check_start (&cw); |
853 | |
1137 | |
854 | struct ev_idle iw; |
1138 | struct ev_idle iw; |
855 | evidle_init (&iw, gcb); |
1139 | ev_idle_init (&iw, gcb); |
856 | evidle_start (&iw); |
1140 | ev_idle_start (&iw); |
857 | |
1141 | |
858 | ev_loop (0); |
1142 | ev_loop (0); |
859 | |
1143 | |
860 | return 0; |
1144 | return 0; |
861 | } |
1145 | } |