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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 | #ifndef WIN32 |
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48 | # include <sys/wait.h> |
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49 | #endif |
11 | #include <sys/time.h> |
50 | #include <sys/time.h> |
12 | #include <time.h> |
51 | #include <time.h> |
13 | |
52 | |
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53 | /**/ |
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54 | |
14 | #ifndef HAVE_MONOTONIC |
55 | #ifndef EV_USE_MONOTONIC |
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56 | # define EV_USE_MONOTONIC 1 |
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57 | #endif |
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58 | |
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59 | #ifndef EV_USE_SELECT |
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60 | # define EV_USE_SELECT 1 |
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61 | #endif |
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62 | |
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63 | #ifndef EV_USE_POLL |
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64 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
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65 | #endif |
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66 | |
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67 | #ifndef EV_USE_EPOLL |
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68 | # define EV_USE_EPOLL 0 |
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69 | #endif |
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70 | |
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71 | #ifndef EV_USE_KQUEUE |
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72 | # define EV_USE_KQUEUE 0 |
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73 | #endif |
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74 | |
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75 | #ifndef EV_USE_REALTIME |
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76 | # define EV_USE_REALTIME 1 |
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77 | #endif |
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78 | |
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79 | /**/ |
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80 | |
15 | # ifdef CLOCK_MONOTONIC |
81 | #ifndef CLOCK_MONOTONIC |
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82 | # undef EV_USE_MONOTONIC |
16 | # define HAVE_MONOTONIC 1 |
83 | # define EV_USE_MONOTONIC 0 |
17 | # endif |
84 | #endif |
18 | #endif |
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19 | |
85 | |
20 | #ifndef HAVE_SELECT |
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21 | # define HAVE_SELECT 1 |
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22 | #endif |
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23 | |
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24 | #ifndef HAVE_EPOLL |
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25 | # define HAVE_EPOLL 0 |
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26 | #endif |
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27 | |
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28 | #ifndef HAVE_REALTIME |
86 | #ifndef CLOCK_REALTIME |
29 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
87 | # undef EV_USE_REALTIME |
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88 | # define EV_USE_REALTIME 0 |
30 | #endif |
89 | #endif |
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90 | |
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91 | /**/ |
31 | |
92 | |
32 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
93 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
33 | #define MAX_BLOCKTIME 60. |
94 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
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95 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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96 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
34 | |
97 | |
35 | #include "ev.h" |
98 | #include "ev.h" |
36 | |
99 | |
37 | struct ev_watcher { |
100 | #if __GNUC__ >= 3 |
38 | EV_WATCHER (ev_watcher); |
101 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
39 | }; |
102 | # define inline inline |
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103 | #else |
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104 | # define expect(expr,value) (expr) |
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105 | # define inline static |
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106 | #endif |
40 | |
107 | |
41 | struct ev_watcher_list { |
108 | #define expect_false(expr) expect ((expr) != 0, 0) |
42 | EV_WATCHER_LIST (ev_watcher_list); |
109 | #define expect_true(expr) expect ((expr) != 0, 1) |
43 | }; |
110 | |
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111 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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112 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
44 | |
113 | |
45 | typedef struct ev_watcher *W; |
114 | typedef struct ev_watcher *W; |
46 | typedef struct ev_watcher_list *WL; |
115 | typedef struct ev_watcher_list *WL; |
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116 | typedef struct ev_watcher_time *WT; |
47 | |
117 | |
48 | static ev_tstamp now, diff; /* monotonic clock */ |
118 | static ev_tstamp now_floor, now, diff; /* monotonic clock */ |
49 | ev_tstamp ev_now; |
119 | ev_tstamp ev_now; |
50 | int ev_method; |
120 | int ev_method; |
51 | |
121 | |
52 | static int have_monotonic; /* runtime */ |
122 | static int have_monotonic; /* runtime */ |
53 | |
123 | |
… | |
… | |
58 | /*****************************************************************************/ |
128 | /*****************************************************************************/ |
59 | |
129 | |
60 | ev_tstamp |
130 | ev_tstamp |
61 | ev_time (void) |
131 | ev_time (void) |
62 | { |
132 | { |
63 | #if HAVE_REALTIME |
133 | #if EV_USE_REALTIME |
64 | struct timespec ts; |
134 | struct timespec ts; |
65 | clock_gettime (CLOCK_REALTIME, &ts); |
135 | clock_gettime (CLOCK_REALTIME, &ts); |
66 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
136 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
67 | #else |
137 | #else |
68 | struct timeval tv; |
138 | struct timeval tv; |
… | |
… | |
72 | } |
142 | } |
73 | |
143 | |
74 | static ev_tstamp |
144 | static ev_tstamp |
75 | get_clock (void) |
145 | get_clock (void) |
76 | { |
146 | { |
77 | #if HAVE_MONOTONIC |
147 | #if EV_USE_MONOTONIC |
78 | if (have_monotonic) |
148 | if (expect_true (have_monotonic)) |
79 | { |
149 | { |
80 | struct timespec ts; |
150 | struct timespec ts; |
81 | clock_gettime (CLOCK_MONOTONIC, &ts); |
151 | clock_gettime (CLOCK_MONOTONIC, &ts); |
82 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
152 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
83 | } |
153 | } |
84 | #endif |
154 | #endif |
85 | |
155 | |
86 | return ev_time (); |
156 | return ev_time (); |
87 | } |
157 | } |
88 | |
158 | |
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159 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
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160 | |
89 | #define array_needsize(base,cur,cnt,init) \ |
161 | #define array_needsize(base,cur,cnt,init) \ |
90 | if ((cnt) > cur) \ |
162 | if (expect_false ((cnt) > cur)) \ |
91 | { \ |
163 | { \ |
92 | int newcnt = cur ? cur << 1 : 16; \ |
164 | int newcnt = cur; \ |
93 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
165 | do \ |
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166 | { \ |
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167 | newcnt = array_roundsize (base, newcnt << 1); \ |
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168 | } \ |
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169 | while ((cnt) > newcnt); \ |
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170 | \ |
94 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
171 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
95 | init (base + cur, newcnt - cur); \ |
172 | init (base + cur, newcnt - cur); \ |
96 | cur = newcnt; \ |
173 | cur = newcnt; \ |
97 | } |
174 | } |
98 | |
175 | |
99 | /*****************************************************************************/ |
176 | /*****************************************************************************/ |
100 | |
177 | |
101 | typedef struct |
178 | typedef struct |
102 | { |
179 | { |
103 | struct ev_io *head; |
180 | struct ev_io *head; |
104 | unsigned char wev, rev; /* want, received event set */ |
181 | unsigned char events; |
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182 | unsigned char reify; |
105 | } ANFD; |
183 | } ANFD; |
106 | |
184 | |
107 | static ANFD *anfds; |
185 | static ANFD *anfds; |
108 | static int anfdmax; |
186 | static int anfdmax; |
109 | |
187 | |
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 |
188 | static void |
114 | anfds_init (ANFD *base, int count) |
189 | anfds_init (ANFD *base, int count) |
115 | { |
190 | { |
116 | while (count--) |
191 | while (count--) |
117 | { |
192 | { |
118 | base->head = 0; |
193 | base->head = 0; |
119 | base->wev = base->rev = EV_NONE; |
194 | base->events = EV_NONE; |
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195 | base->reify = 0; |
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196 | |
120 | ++base; |
197 | ++base; |
121 | } |
198 | } |
122 | } |
199 | } |
123 | |
200 | |
124 | typedef struct |
201 | typedef struct |
125 | { |
202 | { |
126 | W w; |
203 | W w; |
127 | int events; |
204 | int events; |
128 | } ANPENDING; |
205 | } ANPENDING; |
129 | |
206 | |
130 | static ANPENDING *pendings; |
207 | static ANPENDING *pendings [NUMPRI]; |
131 | static int pendingmax, pendingcnt; |
208 | static int pendingmax [NUMPRI], pendingcnt [NUMPRI]; |
132 | |
209 | |
133 | static void |
210 | static void |
134 | event (W w, int events) |
211 | event (W w, int events) |
135 | { |
212 | { |
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213 | if (w->pending) |
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214 | { |
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215 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
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216 | return; |
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217 | } |
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218 | |
136 | w->pending = ++pendingcnt; |
219 | w->pending = ++pendingcnt [ABSPRI (w)]; |
137 | array_needsize (pendings, pendingmax, pendingcnt, ); |
220 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
138 | pendings [pendingcnt - 1].w = w; |
221 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
139 | pendings [pendingcnt - 1].events = events; |
222 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
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223 | } |
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224 | |
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225 | static void |
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226 | queue_events (W *events, int eventcnt, int type) |
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227 | { |
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228 | int i; |
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229 | |
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230 | for (i = 0; i < eventcnt; ++i) |
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231 | event (events [i], type); |
140 | } |
232 | } |
141 | |
233 | |
142 | static void |
234 | static void |
143 | fd_event (int fd, int events) |
235 | fd_event (int fd, int events) |
144 | { |
236 | { |
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152 | if (ev) |
244 | if (ev) |
153 | event ((W)w, ev); |
245 | event ((W)w, ev); |
154 | } |
246 | } |
155 | } |
247 | } |
156 | |
248 | |
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249 | /*****************************************************************************/ |
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250 | |
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251 | static int *fdchanges; |
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252 | static int fdchangemax, fdchangecnt; |
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253 | |
157 | static void |
254 | static void |
158 | queue_events (W *events, int eventcnt, int type) |
255 | fd_reify (void) |
159 | { |
256 | { |
160 | int i; |
257 | int i; |
161 | |
258 | |
162 | for (i = 0; i < eventcnt; ++i) |
259 | for (i = 0; i < fdchangecnt; ++i) |
163 | event (events [i], type); |
260 | { |
164 | } |
261 | int fd = fdchanges [i]; |
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262 | ANFD *anfd = anfds + fd; |
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263 | struct ev_io *w; |
165 | |
264 | |
166 | /*****************************************************************************/ |
265 | int events = 0; |
167 | |
266 | |
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267 | for (w = anfd->head; w; w = w->next) |
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268 | events |= w->events; |
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269 | |
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270 | anfd->reify = 0; |
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271 | |
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272 | if (anfd->events != events) |
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273 | { |
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274 | method_modify (fd, anfd->events, events); |
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275 | anfd->events = events; |
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276 | } |
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277 | } |
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278 | |
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279 | fdchangecnt = 0; |
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280 | } |
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281 | |
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282 | static void |
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283 | fd_change (int fd) |
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284 | { |
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285 | if (anfds [fd].reify || fdchangecnt < 0) |
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286 | return; |
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287 | |
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288 | anfds [fd].reify = 1; |
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289 | |
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290 | ++fdchangecnt; |
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291 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
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292 | fdchanges [fdchangecnt - 1] = fd; |
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293 | } |
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294 | |
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295 | static void |
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296 | fd_kill (int fd) |
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297 | { |
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298 | struct ev_io *w; |
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299 | |
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300 | printf ("killing fd %d\n", fd);//D |
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301 | while ((w = anfds [fd].head)) |
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302 | { |
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303 | ev_io_stop (w); |
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304 | event ((W)w, EV_ERROR | EV_READ | EV_WRITE); |
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305 | } |
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306 | } |
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307 | |
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308 | /* called on EBADF to verify fds */ |
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309 | static void |
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310 | fd_ebadf (void) |
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311 | { |
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312 | int fd; |
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313 | |
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314 | for (fd = 0; fd < anfdmax; ++fd) |
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315 | if (anfds [fd].events) |
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316 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
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317 | fd_kill (fd); |
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318 | } |
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319 | |
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320 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
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321 | static void |
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322 | fd_enomem (void) |
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323 | { |
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324 | int fd = anfdmax; |
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325 | |
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326 | while (fd--) |
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327 | if (anfds [fd].events) |
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328 | { |
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329 | close (fd); |
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330 | fd_kill (fd); |
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331 | return; |
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332 | } |
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333 | } |
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334 | |
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335 | /*****************************************************************************/ |
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336 | |
168 | static struct ev_timer **atimers; |
337 | static struct ev_timer **timers; |
169 | static int atimermax, atimercnt; |
338 | static int timermax, timercnt; |
170 | |
339 | |
171 | static struct ev_timer **rtimers; |
340 | static struct ev_periodic **periodics; |
172 | static int rtimermax, rtimercnt; |
341 | static int periodicmax, periodiccnt; |
173 | |
342 | |
174 | static void |
343 | static void |
175 | upheap (struct ev_timer **timers, int k) |
344 | upheap (WT *timers, int k) |
176 | { |
345 | { |
177 | struct ev_timer *w = timers [k]; |
346 | WT w = timers [k]; |
178 | |
347 | |
179 | while (k && timers [k >> 1]->at > w->at) |
348 | while (k && timers [k >> 1]->at > w->at) |
180 | { |
349 | { |
181 | timers [k] = timers [k >> 1]; |
350 | timers [k] = timers [k >> 1]; |
182 | timers [k]->active = k + 1; |
351 | timers [k]->active = k + 1; |
… | |
… | |
187 | timers [k]->active = k + 1; |
356 | timers [k]->active = k + 1; |
188 | |
357 | |
189 | } |
358 | } |
190 | |
359 | |
191 | static void |
360 | static void |
192 | downheap (struct ev_timer **timers, int N, int k) |
361 | downheap (WT *timers, int N, int k) |
193 | { |
362 | { |
194 | struct ev_timer *w = timers [k]; |
363 | WT w = timers [k]; |
195 | |
364 | |
196 | while (k < (N >> 1)) |
365 | while (k < (N >> 1)) |
197 | { |
366 | { |
198 | int j = k << 1; |
367 | int j = k << 1; |
199 | |
368 | |
… | |
… | |
215 | /*****************************************************************************/ |
384 | /*****************************************************************************/ |
216 | |
385 | |
217 | typedef struct |
386 | typedef struct |
218 | { |
387 | { |
219 | struct ev_signal *head; |
388 | struct ev_signal *head; |
220 | sig_atomic_t gotsig; |
389 | sig_atomic_t volatile gotsig; |
221 | } ANSIG; |
390 | } ANSIG; |
222 | |
391 | |
223 | static ANSIG *signals; |
392 | static ANSIG *signals; |
224 | static int signalmax; |
393 | static int signalmax; |
225 | |
394 | |
226 | static int sigpipe [2]; |
395 | static int sigpipe [2]; |
227 | static sig_atomic_t gotsig; |
396 | static sig_atomic_t volatile gotsig; |
228 | static struct ev_io sigev; |
397 | static struct ev_io sigev; |
229 | |
398 | |
230 | static void |
399 | static void |
231 | signals_init (ANSIG *base, int count) |
400 | signals_init (ANSIG *base, int count) |
232 | { |
401 | { |
233 | while (count--) |
402 | while (count--) |
234 | { |
403 | { |
235 | base->head = 0; |
404 | base->head = 0; |
236 | base->gotsig = 0; |
405 | base->gotsig = 0; |
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406 | |
237 | ++base; |
407 | ++base; |
238 | } |
408 | } |
239 | } |
409 | } |
240 | |
410 | |
241 | static void |
411 | static void |
… | |
… | |
244 | signals [signum - 1].gotsig = 1; |
414 | signals [signum - 1].gotsig = 1; |
245 | |
415 | |
246 | if (!gotsig) |
416 | if (!gotsig) |
247 | { |
417 | { |
248 | gotsig = 1; |
418 | gotsig = 1; |
249 | write (sigpipe [1], &gotsig, 1); |
419 | write (sigpipe [1], &signum, 1); |
250 | } |
420 | } |
251 | } |
421 | } |
252 | |
422 | |
253 | static void |
423 | static void |
254 | sigcb (struct ev_io *iow, int revents) |
424 | sigcb (struct ev_io *iow, int revents) |
255 | { |
425 | { |
256 | struct ev_signal *w; |
426 | struct ev_signal *w; |
257 | int sig; |
427 | int signum; |
258 | |
428 | |
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429 | read (sigpipe [0], &revents, 1); |
259 | gotsig = 0; |
430 | gotsig = 0; |
260 | read (sigpipe [0], &revents, 1); |
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261 | |
431 | |
262 | for (sig = signalmax; sig--; ) |
432 | for (signum = signalmax; signum--; ) |
263 | if (signals [sig].gotsig) |
433 | if (signals [signum].gotsig) |
264 | { |
434 | { |
265 | signals [sig].gotsig = 0; |
435 | signals [signum].gotsig = 0; |
266 | |
436 | |
267 | for (w = signals [sig].head; w; w = w->next) |
437 | for (w = signals [signum].head; w; w = w->next) |
268 | event ((W)w, EV_SIGNAL); |
438 | event ((W)w, EV_SIGNAL); |
269 | } |
439 | } |
270 | } |
440 | } |
271 | |
441 | |
272 | static void |
442 | static void |
273 | siginit (void) |
443 | siginit (void) |
274 | { |
444 | { |
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445 | #ifndef WIN32 |
275 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
446 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
276 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
447 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
277 | |
448 | |
278 | /* rather than sort out wether we really need nb, set it */ |
449 | /* rather than sort out wether we really need nb, set it */ |
279 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
450 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
280 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
451 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
452 | #endif |
281 | |
453 | |
282 | evio_set (&sigev, sigpipe [0], EV_READ); |
454 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
283 | evio_start (&sigev); |
455 | ev_io_start (&sigev); |
284 | } |
456 | } |
285 | |
457 | |
286 | /*****************************************************************************/ |
458 | /*****************************************************************************/ |
287 | |
459 | |
288 | static struct ev_idle **idles; |
460 | static struct ev_idle **idles; |
289 | static int idlemax, idlecnt; |
461 | static int idlemax, idlecnt; |
290 | |
462 | |
|
|
463 | static struct ev_prepare **prepares; |
|
|
464 | static int preparemax, preparecnt; |
|
|
465 | |
291 | static struct ev_check **checks; |
466 | static struct ev_check **checks; |
292 | static int checkmax, checkcnt; |
467 | static int checkmax, checkcnt; |
293 | |
468 | |
294 | /*****************************************************************************/ |
469 | /*****************************************************************************/ |
295 | |
470 | |
|
|
471 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
472 | static struct ev_signal childev; |
|
|
473 | |
|
|
474 | #ifndef WIN32 |
|
|
475 | |
|
|
476 | #ifndef WCONTINUED |
|
|
477 | # define WCONTINUED 0 |
|
|
478 | #endif |
|
|
479 | |
|
|
480 | static void |
|
|
481 | childcb (struct ev_signal *sw, int revents) |
|
|
482 | { |
|
|
483 | struct ev_child *w; |
|
|
484 | int pid, status; |
|
|
485 | |
|
|
486 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
|
|
487 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
|
|
488 | if (w->pid == pid || !w->pid) |
|
|
489 | { |
|
|
490 | w->rpid = pid; |
|
|
491 | w->rstatus = status; |
|
|
492 | event ((W)w, EV_CHILD); |
|
|
493 | } |
|
|
494 | } |
|
|
495 | |
|
|
496 | #endif |
|
|
497 | |
|
|
498 | /*****************************************************************************/ |
|
|
499 | |
|
|
500 | #if EV_USE_KQUEUE |
|
|
501 | # include "ev_kqueue.c" |
|
|
502 | #endif |
296 | #if HAVE_EPOLL |
503 | #if EV_USE_EPOLL |
297 | # include "ev_epoll.c" |
504 | # include "ev_epoll.c" |
298 | #endif |
505 | #endif |
|
|
506 | #if EV_USE_POLL |
|
|
507 | # include "ev_poll.c" |
|
|
508 | #endif |
299 | #if HAVE_SELECT |
509 | #if EV_USE_SELECT |
300 | # include "ev_select.c" |
510 | # include "ev_select.c" |
301 | #endif |
511 | #endif |
302 | |
512 | |
|
|
513 | int |
|
|
514 | ev_version_major (void) |
|
|
515 | { |
|
|
516 | return EV_VERSION_MAJOR; |
|
|
517 | } |
|
|
518 | |
|
|
519 | int |
|
|
520 | ev_version_minor (void) |
|
|
521 | { |
|
|
522 | return EV_VERSION_MINOR; |
|
|
523 | } |
|
|
524 | |
|
|
525 | /* return true if we are running with elevated privileges and ignore env variables */ |
|
|
526 | static int |
|
|
527 | enable_secure () |
|
|
528 | { |
|
|
529 | return getuid () != geteuid () |
|
|
530 | || getgid () != getegid (); |
|
|
531 | } |
|
|
532 | |
303 | int ev_init (int flags) |
533 | int ev_init (int methods) |
304 | { |
534 | { |
305 | #if HAVE_MONOTONIC |
|
|
306 | { |
|
|
307 | struct timespec ts; |
|
|
308 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
309 | have_monotonic = 1; |
|
|
310 | } |
|
|
311 | #endif |
|
|
312 | |
|
|
313 | ev_now = ev_time (); |
|
|
314 | now = get_clock (); |
|
|
315 | diff = ev_now - now; |
|
|
316 | |
|
|
317 | if (pipe (sigpipe)) |
|
|
318 | return 0; |
|
|
319 | |
|
|
320 | ev_method = EVMETHOD_NONE; |
|
|
321 | #if HAVE_EPOLL |
|
|
322 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
323 | #endif |
|
|
324 | #if HAVE_SELECT |
|
|
325 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
326 | #endif |
|
|
327 | |
|
|
328 | if (ev_method) |
535 | if (!ev_method) |
|
|
536 | { |
|
|
537 | #if EV_USE_MONOTONIC |
329 | { |
538 | { |
|
|
539 | struct timespec ts; |
|
|
540 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
541 | have_monotonic = 1; |
|
|
542 | } |
|
|
543 | #endif |
|
|
544 | |
|
|
545 | ev_now = ev_time (); |
|
|
546 | now = get_clock (); |
|
|
547 | now_floor = now; |
|
|
548 | diff = ev_now - now; |
|
|
549 | |
|
|
550 | if (pipe (sigpipe)) |
|
|
551 | return 0; |
|
|
552 | |
|
|
553 | if (methods == EVMETHOD_AUTO) |
|
|
554 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
555 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
556 | else |
|
|
557 | methods = EVMETHOD_ANY; |
|
|
558 | |
|
|
559 | ev_method = 0; |
|
|
560 | #if EV_USE_KQUEUE |
|
|
561 | if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods); |
|
|
562 | #endif |
|
|
563 | #if EV_USE_EPOLL |
|
|
564 | if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods); |
|
|
565 | #endif |
|
|
566 | #if EV_USE_POLL |
|
|
567 | if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods); |
|
|
568 | #endif |
|
|
569 | #if EV_USE_SELECT |
|
|
570 | if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods); |
|
|
571 | #endif |
|
|
572 | |
|
|
573 | if (ev_method) |
|
|
574 | { |
330 | evw_init (&sigev, sigcb, 0); |
575 | ev_watcher_init (&sigev, sigcb); |
331 | siginit (); |
576 | siginit (); |
|
|
577 | |
|
|
578 | #ifndef WIN32 |
|
|
579 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
580 | ev_signal_start (&childev); |
|
|
581 | #endif |
|
|
582 | } |
332 | } |
583 | } |
333 | |
584 | |
334 | return ev_method; |
585 | return ev_method; |
335 | } |
586 | } |
336 | |
587 | |
337 | /*****************************************************************************/ |
588 | /*****************************************************************************/ |
338 | |
589 | |
339 | void ev_prefork (void) |
590 | void |
|
|
591 | ev_fork_prepare (void) |
340 | { |
592 | { |
|
|
593 | /* nop */ |
341 | } |
594 | } |
342 | |
595 | |
|
|
596 | void |
343 | void ev_postfork_parent (void) |
597 | ev_fork_parent (void) |
344 | { |
598 | { |
|
|
599 | /* nop */ |
345 | } |
600 | } |
346 | |
601 | |
|
|
602 | void |
347 | void ev_postfork_child (void) |
603 | ev_fork_child (void) |
348 | { |
604 | { |
349 | #if HAVE_EPOLL |
605 | #if EV_USE_EPOLL |
350 | if (ev_method == EVMETHOD_EPOLL) |
606 | if (ev_method == EVMETHOD_EPOLL) |
351 | epoll_postfork_child (); |
607 | epoll_postfork_child (); |
352 | #endif |
608 | #endif |
353 | |
609 | |
354 | evio_stop (&sigev); |
610 | ev_io_stop (&sigev); |
355 | close (sigpipe [0]); |
611 | close (sigpipe [0]); |
356 | close (sigpipe [1]); |
612 | close (sigpipe [1]); |
357 | pipe (sigpipe); |
613 | pipe (sigpipe); |
358 | siginit (); |
614 | siginit (); |
359 | } |
615 | } |
360 | |
616 | |
361 | /*****************************************************************************/ |
617 | /*****************************************************************************/ |
362 | |
618 | |
363 | static void |
619 | static void |
364 | fd_reify (void) |
620 | call_pending (void) |
365 | { |
621 | { |
366 | int i; |
622 | int pri; |
367 | |
623 | |
368 | for (i = 0; i < fdchangecnt; ++i) |
624 | for (pri = NUMPRI; pri--; ) |
369 | { |
625 | while (pendingcnt [pri]) |
370 | int fd = fdchanges [i]; |
|
|
371 | ANFD *anfd = anfds + fd; |
|
|
372 | struct ev_io *w; |
|
|
373 | |
|
|
374 | int wev = 0; |
|
|
375 | |
|
|
376 | for (w = anfd->head; w; w = w->next) |
|
|
377 | wev |= w->events; |
|
|
378 | |
|
|
379 | if (anfd->wev != wev) |
|
|
380 | { |
626 | { |
381 | method_modify (fd, anfd->wev, wev); |
627 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
382 | anfd->wev = wev; |
|
|
383 | } |
|
|
384 | } |
|
|
385 | |
628 | |
386 | fdchangecnt = 0; |
|
|
387 | } |
|
|
388 | |
|
|
389 | static void |
|
|
390 | call_pending () |
|
|
391 | { |
|
|
392 | int i; |
|
|
393 | |
|
|
394 | for (i = 0; i < pendingcnt; ++i) |
|
|
395 | { |
|
|
396 | ANPENDING *p = pendings + i; |
|
|
397 | |
|
|
398 | if (p->w) |
629 | if (p->w) |
399 | { |
630 | { |
400 | p->w->pending = 0; |
631 | p->w->pending = 0; |
401 | p->w->cb (p->w, p->events); |
632 | p->w->cb (p->w, p->events); |
402 | } |
633 | } |
403 | } |
634 | } |
404 | |
|
|
405 | pendingcnt = 0; |
|
|
406 | } |
635 | } |
407 | |
636 | |
408 | static void |
637 | static void |
409 | timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now) |
638 | timers_reify (void) |
410 | { |
639 | { |
411 | while (timercnt && timers [0]->at <= now) |
640 | while (timercnt && timers [0]->at <= now) |
412 | { |
641 | { |
413 | struct ev_timer *w = timers [0]; |
642 | struct ev_timer *w = timers [0]; |
414 | |
643 | |
415 | /* first reschedule or stop timer */ |
644 | /* first reschedule or stop timer */ |
416 | if (w->repeat) |
645 | if (w->repeat) |
417 | { |
646 | { |
418 | if (w->is_abs) |
647 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
419 | w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat; |
|
|
420 | else |
|
|
421 | w->at = now + w->repeat; |
648 | w->at = now + w->repeat; |
422 | |
|
|
423 | assert (w->at > now); |
|
|
424 | |
|
|
425 | downheap (timers, timercnt, 0); |
649 | downheap ((WT *)timers, timercnt, 0); |
426 | } |
650 | } |
427 | else |
651 | else |
428 | { |
|
|
429 | evtimer_stop (w); /* nonrepeating: stop timer */ |
652 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
430 | --timercnt; /* maybe pass by reference instead? */ |
|
|
431 | } |
|
|
432 | |
653 | |
433 | event ((W)w, EV_TIMEOUT); |
654 | event ((W)w, EV_TIMEOUT); |
434 | } |
655 | } |
435 | } |
656 | } |
436 | |
657 | |
437 | static void |
658 | static void |
438 | time_update () |
659 | periodics_reify (void) |
|
|
660 | { |
|
|
661 | while (periodiccnt && periodics [0]->at <= ev_now) |
|
|
662 | { |
|
|
663 | struct ev_periodic *w = periodics [0]; |
|
|
664 | |
|
|
665 | /* first reschedule or stop timer */ |
|
|
666 | if (w->interval) |
|
|
667 | { |
|
|
668 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
|
|
669 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
|
|
670 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
671 | } |
|
|
672 | else |
|
|
673 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
|
|
674 | |
|
|
675 | event ((W)w, EV_PERIODIC); |
|
|
676 | } |
|
|
677 | } |
|
|
678 | |
|
|
679 | static void |
|
|
680 | periodics_reschedule (ev_tstamp diff) |
439 | { |
681 | { |
440 | int i; |
682 | int i; |
441 | ev_now = ev_time (); |
|
|
442 | |
683 | |
443 | if (have_monotonic) |
684 | /* adjust periodics after time jump */ |
|
|
685 | for (i = 0; i < periodiccnt; ++i) |
444 | { |
686 | { |
445 | ev_tstamp odiff = diff; |
687 | struct ev_periodic *w = periodics [i]; |
446 | |
688 | |
447 | /* detecting time jumps is much more difficult */ |
689 | if (w->interval) |
448 | for (i = 2; --i; ) /* loop a few times, before making important decisions */ |
|
|
449 | { |
|
|
450 | now = get_clock (); |
|
|
451 | diff = ev_now - now; |
|
|
452 | |
|
|
453 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
454 | return; /* all is well */ |
|
|
455 | |
|
|
456 | ev_now = ev_time (); |
|
|
457 | } |
690 | { |
|
|
691 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
458 | |
692 | |
459 | /* time jump detected, reschedule atimers */ |
693 | if (fabs (diff) >= 1e-4) |
460 | for (i = 0; i < atimercnt; ++i) |
694 | { |
|
|
695 | ev_periodic_stop (w); |
|
|
696 | ev_periodic_start (w); |
|
|
697 | |
|
|
698 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
699 | } |
461 | { |
700 | } |
462 | struct ev_timer *w = atimers [i]; |
701 | } |
463 | w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
702 | } |
464 | } |
703 | |
|
|
704 | static int |
|
|
705 | time_update_monotonic (void) |
|
|
706 | { |
|
|
707 | now = get_clock (); |
|
|
708 | |
|
|
709 | if (expect_true (now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
710 | { |
|
|
711 | ev_now = now + diff; |
|
|
712 | return 0; |
465 | } |
713 | } |
466 | else |
714 | else |
467 | { |
715 | { |
|
|
716 | now_floor = now; |
|
|
717 | ev_now = ev_time (); |
|
|
718 | return 1; |
|
|
719 | } |
|
|
720 | } |
|
|
721 | |
|
|
722 | static void |
|
|
723 | time_update (void) |
|
|
724 | { |
|
|
725 | int i; |
|
|
726 | |
|
|
727 | #if EV_USE_MONOTONIC |
|
|
728 | if (expect_true (have_monotonic)) |
|
|
729 | { |
|
|
730 | if (time_update_monotonic ()) |
|
|
731 | { |
|
|
732 | ev_tstamp odiff = diff; |
|
|
733 | |
|
|
734 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
735 | { |
|
|
736 | diff = ev_now - now; |
|
|
737 | |
|
|
738 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
739 | return; /* all is well */ |
|
|
740 | |
|
|
741 | ev_now = ev_time (); |
|
|
742 | now = get_clock (); |
|
|
743 | now_floor = now; |
|
|
744 | } |
|
|
745 | |
|
|
746 | periodics_reschedule (diff - odiff); |
|
|
747 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
748 | } |
|
|
749 | } |
|
|
750 | else |
|
|
751 | #endif |
|
|
752 | { |
|
|
753 | ev_now = ev_time (); |
|
|
754 | |
468 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
755 | if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
469 | /* time jump detected, adjust rtimers */ |
756 | { |
|
|
757 | periodics_reschedule (ev_now - now); |
|
|
758 | |
|
|
759 | /* adjust timers. this is easy, as the offset is the same for all */ |
470 | for (i = 0; i < rtimercnt; ++i) |
760 | for (i = 0; i < timercnt; ++i) |
471 | rtimers [i]->at += ev_now - now; |
761 | timers [i]->at += diff; |
|
|
762 | } |
472 | |
763 | |
473 | now = ev_now; |
764 | now = ev_now; |
474 | } |
765 | } |
475 | } |
766 | } |
476 | |
767 | |
477 | int ev_loop_done; |
768 | int ev_loop_done; |
478 | |
769 | |
479 | void ev_loop (int flags) |
770 | void ev_loop (int flags) |
480 | { |
771 | { |
481 | double block; |
772 | double block; |
482 | ev_loop_done = flags & EVLOOP_ONESHOT; |
773 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
483 | |
|
|
484 | if (checkcnt) |
|
|
485 | { |
|
|
486 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
487 | call_pending (); |
|
|
488 | } |
|
|
489 | |
774 | |
490 | do |
775 | do |
491 | { |
776 | { |
|
|
777 | /* queue check watchers (and execute them) */ |
|
|
778 | if (expect_false (preparecnt)) |
|
|
779 | { |
|
|
780 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
|
|
781 | call_pending (); |
|
|
782 | } |
|
|
783 | |
492 | /* update fd-related kernel structures */ |
784 | /* update fd-related kernel structures */ |
493 | fd_reify (); |
785 | fd_reify (); |
494 | |
786 | |
495 | /* calculate blocking time */ |
787 | /* calculate blocking time */ |
|
|
788 | |
|
|
789 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
790 | always have timers, we just calculate it always */ |
|
|
791 | #if EV_USE_MONOTONIC |
|
|
792 | if (expect_true (have_monotonic)) |
|
|
793 | time_update_monotonic (); |
|
|
794 | else |
|
|
795 | #endif |
|
|
796 | { |
|
|
797 | ev_now = ev_time (); |
|
|
798 | now = ev_now; |
|
|
799 | } |
|
|
800 | |
496 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
801 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
497 | block = 0.; |
802 | block = 0.; |
498 | else |
803 | else |
499 | { |
804 | { |
500 | block = MAX_BLOCKTIME; |
805 | block = MAX_BLOCKTIME; |
501 | |
806 | |
502 | if (rtimercnt) |
807 | if (timercnt) |
503 | { |
808 | { |
504 | ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge; |
809 | ev_tstamp to = timers [0]->at - now + method_fudge; |
505 | if (block > to) block = to; |
810 | if (block > to) block = to; |
506 | } |
811 | } |
507 | |
812 | |
508 | if (atimercnt) |
813 | if (periodiccnt) |
509 | { |
814 | { |
510 | ev_tstamp to = atimers [0]->at - ev_time () + method_fudge; |
815 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
511 | if (block > to) block = to; |
816 | if (block > to) block = to; |
512 | } |
817 | } |
513 | |
818 | |
514 | if (block < 0.) block = 0.; |
819 | if (block < 0.) block = 0.; |
515 | } |
820 | } |
… | |
… | |
518 | |
823 | |
519 | /* update ev_now, do magic */ |
824 | /* update ev_now, do magic */ |
520 | time_update (); |
825 | time_update (); |
521 | |
826 | |
522 | /* queue pending timers and reschedule them */ |
827 | /* queue pending timers and reschedule them */ |
523 | /* absolute timers first */ |
828 | timers_reify (); /* relative timers called last */ |
524 | timers_reify (atimers, atimercnt, ev_now); |
829 | periodics_reify (); /* absolute timers called first */ |
525 | /* relative timers second */ |
|
|
526 | timers_reify (rtimers, rtimercnt, now); |
|
|
527 | |
830 | |
528 | /* queue idle watchers unless io or timers are pending */ |
831 | /* queue idle watchers unless io or timers are pending */ |
529 | if (!pendingcnt) |
832 | if (!pendingcnt) |
530 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
833 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
531 | |
834 | |
532 | /* queue check and possibly idle watchers */ |
835 | /* queue check watchers, to be executed first */ |
|
|
836 | if (checkcnt) |
533 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
837 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
534 | |
838 | |
535 | call_pending (); |
839 | call_pending (); |
536 | } |
840 | } |
537 | while (!ev_loop_done); |
841 | while (!ev_loop_done); |
|
|
842 | |
|
|
843 | if (ev_loop_done != 2) |
|
|
844 | ev_loop_done = 0; |
538 | } |
845 | } |
539 | |
846 | |
540 | /*****************************************************************************/ |
847 | /*****************************************************************************/ |
541 | |
848 | |
542 | static void |
849 | static void |
… | |
… | |
560 | head = &(*head)->next; |
867 | head = &(*head)->next; |
561 | } |
868 | } |
562 | } |
869 | } |
563 | |
870 | |
564 | static void |
871 | static void |
|
|
872 | ev_clear_pending (W w) |
|
|
873 | { |
|
|
874 | if (w->pending) |
|
|
875 | { |
|
|
876 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
|
|
877 | w->pending = 0; |
|
|
878 | } |
|
|
879 | } |
|
|
880 | |
|
|
881 | static void |
565 | ev_start (W w, int active) |
882 | ev_start (W w, int active) |
566 | { |
883 | { |
567 | w->pending = 0; |
884 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
885 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
886 | |
568 | w->active = active; |
887 | w->active = active; |
569 | } |
888 | } |
570 | |
889 | |
571 | static void |
890 | static void |
572 | ev_stop (W w) |
891 | ev_stop (W w) |
573 | { |
892 | { |
574 | if (w->pending) |
|
|
575 | pendings [w->pending - 1].w = 0; |
|
|
576 | |
|
|
577 | w->active = 0; |
893 | w->active = 0; |
578 | /* nop */ |
|
|
579 | } |
894 | } |
580 | |
895 | |
581 | /*****************************************************************************/ |
896 | /*****************************************************************************/ |
582 | |
897 | |
583 | void |
898 | void |
584 | evio_start (struct ev_io *w) |
899 | ev_io_start (struct ev_io *w) |
585 | { |
900 | { |
|
|
901 | int fd = w->fd; |
|
|
902 | |
586 | if (ev_is_active (w)) |
903 | if (ev_is_active (w)) |
587 | return; |
904 | return; |
588 | |
905 | |
589 | int fd = w->fd; |
906 | assert (("ev_io_start called with negative fd", fd >= 0)); |
590 | |
907 | |
591 | ev_start ((W)w, 1); |
908 | ev_start ((W)w, 1); |
592 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
909 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
593 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
910 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
594 | |
911 | |
595 | ++fdchangecnt; |
912 | fd_change (fd); |
596 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
597 | fdchanges [fdchangecnt - 1] = fd; |
|
|
598 | } |
913 | } |
599 | |
914 | |
600 | void |
915 | void |
601 | evio_stop (struct ev_io *w) |
916 | ev_io_stop (struct ev_io *w) |
602 | { |
917 | { |
|
|
918 | ev_clear_pending ((W)w); |
603 | if (!ev_is_active (w)) |
919 | if (!ev_is_active (w)) |
604 | return; |
920 | return; |
605 | |
921 | |
606 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
922 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
607 | ev_stop ((W)w); |
923 | ev_stop ((W)w); |
608 | |
924 | |
609 | ++fdchangecnt; |
925 | fd_change (w->fd); |
610 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
611 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
612 | } |
926 | } |
613 | |
927 | |
614 | void |
928 | void |
615 | evtimer_start (struct ev_timer *w) |
929 | ev_timer_start (struct ev_timer *w) |
616 | { |
930 | { |
617 | if (ev_is_active (w)) |
931 | if (ev_is_active (w)) |
618 | return; |
932 | return; |
619 | |
933 | |
620 | if (w->is_abs) |
934 | w->at += now; |
|
|
935 | |
|
|
936 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
937 | |
|
|
938 | ev_start ((W)w, ++timercnt); |
|
|
939 | array_needsize (timers, timermax, timercnt, ); |
|
|
940 | timers [timercnt - 1] = w; |
|
|
941 | upheap ((WT *)timers, timercnt - 1); |
|
|
942 | } |
|
|
943 | |
|
|
944 | void |
|
|
945 | ev_timer_stop (struct ev_timer *w) |
|
|
946 | { |
|
|
947 | ev_clear_pending ((W)w); |
|
|
948 | if (!ev_is_active (w)) |
|
|
949 | return; |
|
|
950 | |
|
|
951 | if (w->active < timercnt--) |
|
|
952 | { |
|
|
953 | timers [w->active - 1] = timers [timercnt]; |
|
|
954 | downheap ((WT *)timers, timercnt, w->active - 1); |
621 | { |
955 | } |
622 | /* this formula differs from the one in timer_reify becuse we do not round up */ |
956 | |
|
|
957 | w->at = w->repeat; |
|
|
958 | |
|
|
959 | ev_stop ((W)w); |
|
|
960 | } |
|
|
961 | |
|
|
962 | void |
|
|
963 | ev_timer_again (struct ev_timer *w) |
|
|
964 | { |
|
|
965 | if (ev_is_active (w)) |
|
|
966 | { |
623 | if (w->repeat) |
967 | if (w->repeat) |
|
|
968 | { |
|
|
969 | w->at = now + w->repeat; |
|
|
970 | downheap ((WT *)timers, timercnt, w->active - 1); |
|
|
971 | } |
|
|
972 | else |
|
|
973 | ev_timer_stop (w); |
|
|
974 | } |
|
|
975 | else if (w->repeat) |
|
|
976 | ev_timer_start (w); |
|
|
977 | } |
|
|
978 | |
|
|
979 | void |
|
|
980 | ev_periodic_start (struct ev_periodic *w) |
|
|
981 | { |
|
|
982 | if (ev_is_active (w)) |
|
|
983 | return; |
|
|
984 | |
|
|
985 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
986 | |
|
|
987 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
988 | if (w->interval) |
624 | w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
989 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
625 | |
990 | |
626 | ev_start ((W)w, ++atimercnt); |
991 | ev_start ((W)w, ++periodiccnt); |
627 | array_needsize (atimers, atimermax, atimercnt, ); |
992 | array_needsize (periodics, periodicmax, periodiccnt, ); |
628 | atimers [atimercnt - 1] = w; |
993 | periodics [periodiccnt - 1] = w; |
629 | upheap (atimers, atimercnt - 1); |
994 | upheap ((WT *)periodics, periodiccnt - 1); |
630 | } |
|
|
631 | else |
|
|
632 | { |
|
|
633 | w->at += now; |
|
|
634 | |
|
|
635 | ev_start ((W)w, ++rtimercnt); |
|
|
636 | array_needsize (rtimers, rtimermax, rtimercnt, ); |
|
|
637 | rtimers [rtimercnt - 1] = w; |
|
|
638 | upheap (rtimers, rtimercnt - 1); |
|
|
639 | } |
|
|
640 | |
|
|
641 | } |
995 | } |
642 | |
996 | |
643 | void |
997 | void |
644 | evtimer_stop (struct ev_timer *w) |
998 | ev_periodic_stop (struct ev_periodic *w) |
645 | { |
999 | { |
|
|
1000 | ev_clear_pending ((W)w); |
646 | if (!ev_is_active (w)) |
1001 | if (!ev_is_active (w)) |
647 | return; |
1002 | return; |
648 | |
1003 | |
649 | if (w->is_abs) |
|
|
650 | { |
|
|
651 | if (w->active < atimercnt--) |
1004 | if (w->active < periodiccnt--) |
652 | { |
|
|
653 | atimers [w->active - 1] = atimers [atimercnt]; |
|
|
654 | downheap (atimers, atimercnt, w->active - 1); |
|
|
655 | } |
|
|
656 | } |
1005 | { |
657 | else |
1006 | periodics [w->active - 1] = periodics [periodiccnt]; |
658 | { |
1007 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
659 | if (w->active < rtimercnt--) |
|
|
660 | { |
|
|
661 | rtimers [w->active - 1] = rtimers [rtimercnt]; |
|
|
662 | downheap (rtimers, rtimercnt, w->active - 1); |
|
|
663 | } |
|
|
664 | } |
1008 | } |
665 | |
1009 | |
666 | ev_stop ((W)w); |
1010 | ev_stop ((W)w); |
667 | } |
1011 | } |
668 | |
1012 | |
669 | void |
1013 | void |
670 | evsignal_start (struct ev_signal *w) |
1014 | ev_signal_start (struct ev_signal *w) |
671 | { |
1015 | { |
672 | if (ev_is_active (w)) |
1016 | if (ev_is_active (w)) |
673 | return; |
1017 | return; |
|
|
1018 | |
|
|
1019 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
674 | |
1020 | |
675 | ev_start ((W)w, 1); |
1021 | ev_start ((W)w, 1); |
676 | array_needsize (signals, signalmax, w->signum, signals_init); |
1022 | array_needsize (signals, signalmax, w->signum, signals_init); |
677 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1023 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
678 | |
1024 | |
… | |
… | |
685 | sigaction (w->signum, &sa, 0); |
1031 | sigaction (w->signum, &sa, 0); |
686 | } |
1032 | } |
687 | } |
1033 | } |
688 | |
1034 | |
689 | void |
1035 | void |
690 | evsignal_stop (struct ev_signal *w) |
1036 | ev_signal_stop (struct ev_signal *w) |
691 | { |
1037 | { |
|
|
1038 | ev_clear_pending ((W)w); |
692 | if (!ev_is_active (w)) |
1039 | if (!ev_is_active (w)) |
693 | return; |
1040 | return; |
694 | |
1041 | |
695 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1042 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
696 | ev_stop ((W)w); |
1043 | ev_stop ((W)w); |
697 | |
1044 | |
698 | if (!signals [w->signum - 1].head) |
1045 | if (!signals [w->signum - 1].head) |
699 | signal (w->signum, SIG_DFL); |
1046 | signal (w->signum, SIG_DFL); |
700 | } |
1047 | } |
701 | |
1048 | |
|
|
1049 | void |
702 | void evidle_start (struct ev_idle *w) |
1050 | ev_idle_start (struct ev_idle *w) |
703 | { |
1051 | { |
704 | if (ev_is_active (w)) |
1052 | if (ev_is_active (w)) |
705 | return; |
1053 | return; |
706 | |
1054 | |
707 | ev_start ((W)w, ++idlecnt); |
1055 | ev_start ((W)w, ++idlecnt); |
708 | array_needsize (idles, idlemax, idlecnt, ); |
1056 | array_needsize (idles, idlemax, idlecnt, ); |
709 | idles [idlecnt - 1] = w; |
1057 | idles [idlecnt - 1] = w; |
710 | } |
1058 | } |
711 | |
1059 | |
|
|
1060 | void |
712 | void evidle_stop (struct ev_idle *w) |
1061 | ev_idle_stop (struct ev_idle *w) |
713 | { |
1062 | { |
|
|
1063 | ev_clear_pending ((W)w); |
|
|
1064 | if (ev_is_active (w)) |
|
|
1065 | return; |
|
|
1066 | |
714 | idles [w->active - 1] = idles [--idlecnt]; |
1067 | idles [w->active - 1] = idles [--idlecnt]; |
715 | ev_stop ((W)w); |
1068 | ev_stop ((W)w); |
716 | } |
1069 | } |
717 | |
1070 | |
|
|
1071 | void |
|
|
1072 | ev_prepare_start (struct ev_prepare *w) |
|
|
1073 | { |
|
|
1074 | if (ev_is_active (w)) |
|
|
1075 | return; |
|
|
1076 | |
|
|
1077 | ev_start ((W)w, ++preparecnt); |
|
|
1078 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1079 | prepares [preparecnt - 1] = w; |
|
|
1080 | } |
|
|
1081 | |
|
|
1082 | void |
|
|
1083 | ev_prepare_stop (struct ev_prepare *w) |
|
|
1084 | { |
|
|
1085 | ev_clear_pending ((W)w); |
|
|
1086 | if (ev_is_active (w)) |
|
|
1087 | return; |
|
|
1088 | |
|
|
1089 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
1090 | ev_stop ((W)w); |
|
|
1091 | } |
|
|
1092 | |
|
|
1093 | void |
718 | void evcheck_start (struct ev_check *w) |
1094 | ev_check_start (struct ev_check *w) |
719 | { |
1095 | { |
720 | if (ev_is_active (w)) |
1096 | if (ev_is_active (w)) |
721 | return; |
1097 | return; |
722 | |
1098 | |
723 | ev_start ((W)w, ++checkcnt); |
1099 | ev_start ((W)w, ++checkcnt); |
724 | array_needsize (checks, checkmax, checkcnt, ); |
1100 | array_needsize (checks, checkmax, checkcnt, ); |
725 | checks [checkcnt - 1] = w; |
1101 | checks [checkcnt - 1] = w; |
726 | } |
1102 | } |
727 | |
1103 | |
|
|
1104 | void |
728 | void evcheck_stop (struct ev_check *w) |
1105 | ev_check_stop (struct ev_check *w) |
729 | { |
1106 | { |
|
|
1107 | ev_clear_pending ((W)w); |
|
|
1108 | if (ev_is_active (w)) |
|
|
1109 | return; |
|
|
1110 | |
730 | checks [w->active - 1] = checks [--checkcnt]; |
1111 | checks [w->active - 1] = checks [--checkcnt]; |
731 | ev_stop ((W)w); |
1112 | ev_stop ((W)w); |
732 | } |
1113 | } |
733 | |
1114 | |
|
|
1115 | void |
|
|
1116 | ev_child_start (struct ev_child *w) |
|
|
1117 | { |
|
|
1118 | if (ev_is_active (w)) |
|
|
1119 | return; |
|
|
1120 | |
|
|
1121 | ev_start ((W)w, 1); |
|
|
1122 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1123 | } |
|
|
1124 | |
|
|
1125 | void |
|
|
1126 | ev_child_stop (struct ev_child *w) |
|
|
1127 | { |
|
|
1128 | ev_clear_pending ((W)w); |
|
|
1129 | if (ev_is_active (w)) |
|
|
1130 | return; |
|
|
1131 | |
|
|
1132 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1133 | ev_stop ((W)w); |
|
|
1134 | } |
|
|
1135 | |
|
|
1136 | /*****************************************************************************/ |
|
|
1137 | |
|
|
1138 | struct ev_once |
|
|
1139 | { |
|
|
1140 | struct ev_io io; |
|
|
1141 | struct ev_timer to; |
|
|
1142 | void (*cb)(int revents, void *arg); |
|
|
1143 | void *arg; |
|
|
1144 | }; |
|
|
1145 | |
|
|
1146 | static void |
|
|
1147 | once_cb (struct ev_once *once, int revents) |
|
|
1148 | { |
|
|
1149 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
1150 | void *arg = once->arg; |
|
|
1151 | |
|
|
1152 | ev_io_stop (&once->io); |
|
|
1153 | ev_timer_stop (&once->to); |
|
|
1154 | free (once); |
|
|
1155 | |
|
|
1156 | cb (revents, arg); |
|
|
1157 | } |
|
|
1158 | |
|
|
1159 | static void |
|
|
1160 | once_cb_io (struct ev_io *w, int revents) |
|
|
1161 | { |
|
|
1162 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
|
|
1163 | } |
|
|
1164 | |
|
|
1165 | static void |
|
|
1166 | once_cb_to (struct ev_timer *w, int revents) |
|
|
1167 | { |
|
|
1168 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
|
|
1169 | } |
|
|
1170 | |
|
|
1171 | void |
|
|
1172 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
|
|
1173 | { |
|
|
1174 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
|
|
1175 | |
|
|
1176 | if (!once) |
|
|
1177 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
1178 | else |
|
|
1179 | { |
|
|
1180 | once->cb = cb; |
|
|
1181 | once->arg = arg; |
|
|
1182 | |
|
|
1183 | ev_watcher_init (&once->io, once_cb_io); |
|
|
1184 | if (fd >= 0) |
|
|
1185 | { |
|
|
1186 | ev_io_set (&once->io, fd, events); |
|
|
1187 | ev_io_start (&once->io); |
|
|
1188 | } |
|
|
1189 | |
|
|
1190 | ev_watcher_init (&once->to, once_cb_to); |
|
|
1191 | if (timeout >= 0.) |
|
|
1192 | { |
|
|
1193 | ev_timer_set (&once->to, timeout, 0.); |
|
|
1194 | ev_timer_start (&once->to); |
|
|
1195 | } |
|
|
1196 | } |
|
|
1197 | } |
|
|
1198 | |
734 | /*****************************************************************************/ |
1199 | /*****************************************************************************/ |
735 | |
1200 | |
736 | #if 0 |
1201 | #if 0 |
737 | |
1202 | |
|
|
1203 | struct ev_io wio; |
|
|
1204 | |
738 | static void |
1205 | static void |
739 | sin_cb (struct ev_io *w, int revents) |
1206 | sin_cb (struct ev_io *w, int revents) |
740 | { |
1207 | { |
741 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
1208 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
742 | } |
1209 | } |
743 | |
1210 | |
744 | static void |
1211 | static void |
745 | ocb (struct ev_timer *w, int revents) |
1212 | ocb (struct ev_timer *w, int revents) |
746 | { |
1213 | { |
747 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
1214 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
748 | evtimer_stop (w); |
1215 | ev_timer_stop (w); |
749 | evtimer_start (w); |
1216 | ev_timer_start (w); |
750 | } |
1217 | } |
751 | |
1218 | |
752 | static void |
1219 | static void |
753 | scb (struct ev_signal *w, int revents) |
1220 | scb (struct ev_signal *w, int revents) |
754 | { |
1221 | { |
755 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
1222 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1223 | ev_io_stop (&wio); |
|
|
1224 | ev_io_start (&wio); |
756 | } |
1225 | } |
757 | |
1226 | |
758 | static void |
1227 | static void |
759 | gcb (struct ev_signal *w, int revents) |
1228 | gcb (struct ev_signal *w, int revents) |
760 | { |
1229 | { |
761 | fprintf (stderr, "generic %x\n", revents); |
1230 | fprintf (stderr, "generic %x\n", revents); |
|
|
1231 | |
762 | } |
1232 | } |
763 | |
1233 | |
764 | int main (void) |
1234 | int main (void) |
765 | { |
1235 | { |
766 | struct ev_io sin; |
|
|
767 | |
|
|
768 | ev_init (0); |
1236 | ev_init (0); |
769 | |
1237 | |
770 | evw_init (&sin, sin_cb, 55); |
|
|
771 | evio_set (&sin, 0, EV_READ); |
1238 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
772 | evio_start (&sin); |
1239 | ev_io_start (&wio); |
773 | |
1240 | |
774 | struct ev_timer t[10000]; |
1241 | struct ev_timer t[10000]; |
775 | |
1242 | |
776 | #if 0 |
1243 | #if 0 |
777 | int i; |
1244 | int i; |
778 | for (i = 0; i < 10000; ++i) |
1245 | for (i = 0; i < 10000; ++i) |
779 | { |
1246 | { |
780 | struct ev_timer *w = t + i; |
1247 | struct ev_timer *w = t + i; |
781 | evw_init (w, ocb, i); |
1248 | ev_watcher_init (w, ocb, i); |
782 | evtimer_set_abs (w, drand48 (), 0.99775533); |
1249 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
783 | evtimer_start (w); |
1250 | ev_timer_start (w); |
784 | if (drand48 () < 0.5) |
1251 | if (drand48 () < 0.5) |
785 | evtimer_stop (w); |
1252 | ev_timer_stop (w); |
786 | } |
1253 | } |
787 | #endif |
1254 | #endif |
788 | |
1255 | |
789 | struct ev_timer t1; |
1256 | struct ev_timer t1; |
790 | evw_init (&t1, ocb, 0); |
1257 | ev_timer_init (&t1, ocb, 5, 10); |
791 | evtimer_set_abs (&t1, 5, 10); |
|
|
792 | evtimer_start (&t1); |
1258 | ev_timer_start (&t1); |
793 | |
1259 | |
794 | struct ev_signal sig; |
1260 | struct ev_signal sig; |
795 | evw_init (&sig, scb, 65535); |
|
|
796 | evsignal_set (&sig, SIGQUIT); |
1261 | ev_signal_init (&sig, scb, SIGQUIT); |
797 | evsignal_start (&sig); |
1262 | ev_signal_start (&sig); |
798 | |
1263 | |
799 | struct ev_check cw; |
1264 | struct ev_check cw; |
800 | evw_init (&cw, gcb, 0); |
1265 | ev_check_init (&cw, gcb); |
801 | evcheck_start (&cw); |
1266 | ev_check_start (&cw); |
802 | |
1267 | |
803 | struct ev_idle iw; |
1268 | struct ev_idle iw; |
804 | evw_init (&iw, gcb, 0); |
1269 | ev_idle_init (&iw, gcb); |
805 | evidle_start (&iw); |
1270 | ev_idle_start (&iw); |
806 | |
1271 | |
807 | ev_loop (0); |
1272 | ev_loop (0); |
808 | |
1273 | |
809 | return 0; |
1274 | return 0; |
810 | } |
1275 | } |