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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 | |
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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 | |
14 | #ifdef CLOCK_MONOTONIC |
81 | #ifndef CLOCK_MONOTONIC |
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82 | # undef EV_USE_MONOTONIC |
15 | # define HAVE_MONOTONIC 1 |
83 | # define EV_USE_MONOTONIC 0 |
16 | #endif |
84 | #endif |
17 | |
85 | |
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86 | #ifndef CLOCK_REALTIME |
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87 | # undef EV_USE_REALTIME |
18 | #define HAVE_REALTIME 1 |
88 | # define EV_USE_REALTIME 0 |
19 | #define HAVE_EPOLL 1 |
89 | #endif |
20 | #define HAVE_SELECT 1 |
90 | |
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91 | /**/ |
21 | |
92 | |
22 | #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) */ |
23 | #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 */ |
24 | |
97 | |
25 | #include "ev.h" |
98 | #include "ev.h" |
26 | |
99 | |
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100 | #if __GNUC__ >= 3 |
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101 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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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 |
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107 | |
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108 | #define expect_false(expr) expect ((expr) != 0, 0) |
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109 | #define expect_true(expr) expect ((expr) != 0, 1) |
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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) |
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113 | |
27 | struct ev_watcher { |
114 | typedef struct ev_watcher *W; |
28 | EV_WATCHER (ev_watcher); |
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29 | }; |
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30 | |
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31 | struct ev_watcher_list { |
115 | typedef struct ev_watcher_list *WL; |
32 | EV_WATCHER_LIST (ev_watcher_list); |
116 | typedef struct ev_watcher_time *WT; |
33 | }; |
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34 | |
117 | |
35 | static ev_tstamp now, diff; /* monotonic clock */ |
118 | static ev_tstamp now_floor, now, diff; /* monotonic clock */ |
36 | ev_tstamp ev_now; |
119 | ev_tstamp ev_now; |
37 | int ev_method; |
120 | int ev_method; |
38 | |
121 | |
39 | static int have_monotonic; /* runtime */ |
122 | static int have_monotonic; /* runtime */ |
40 | |
123 | |
… | |
… | |
45 | /*****************************************************************************/ |
128 | /*****************************************************************************/ |
46 | |
129 | |
47 | ev_tstamp |
130 | ev_tstamp |
48 | ev_time (void) |
131 | ev_time (void) |
49 | { |
132 | { |
50 | #if HAVE_REALTIME |
133 | #if EV_USE_REALTIME |
51 | struct timespec ts; |
134 | struct timespec ts; |
52 | clock_gettime (CLOCK_REALTIME, &ts); |
135 | clock_gettime (CLOCK_REALTIME, &ts); |
53 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
136 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
54 | #else |
137 | #else |
55 | struct timeval tv; |
138 | struct timeval tv; |
… | |
… | |
59 | } |
142 | } |
60 | |
143 | |
61 | static ev_tstamp |
144 | static ev_tstamp |
62 | get_clock (void) |
145 | get_clock (void) |
63 | { |
146 | { |
64 | #if HAVE_MONOTONIC |
147 | #if EV_USE_MONOTONIC |
65 | if (have_monotonic) |
148 | if (expect_true (have_monotonic)) |
66 | { |
149 | { |
67 | struct timespec ts; |
150 | struct timespec ts; |
68 | clock_gettime (CLOCK_MONOTONIC, &ts); |
151 | clock_gettime (CLOCK_MONOTONIC, &ts); |
69 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
152 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
70 | } |
153 | } |
71 | #endif |
154 | #endif |
72 | |
155 | |
73 | return ev_time (); |
156 | return ev_time (); |
74 | } |
157 | } |
75 | |
158 | |
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159 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
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160 | |
76 | #define array_needsize(base,cur,cnt,init) \ |
161 | #define array_needsize(base,cur,cnt,init) \ |
77 | if ((cnt) > cur) \ |
162 | if (expect_false ((cnt) > cur)) \ |
78 | { \ |
163 | { \ |
79 | int newcnt = cur ? cur << 1 : 16; \ |
164 | int newcnt = cur; \ |
80 | 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 | \ |
81 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
171 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
82 | init (base + cur, newcnt - cur); \ |
172 | init (base + cur, newcnt - cur); \ |
83 | cur = newcnt; \ |
173 | cur = newcnt; \ |
84 | } |
174 | } |
85 | |
175 | |
86 | /*****************************************************************************/ |
176 | /*****************************************************************************/ |
87 | |
177 | |
88 | typedef struct |
178 | typedef struct |
89 | { |
179 | { |
90 | struct ev_io *head; |
180 | struct ev_io *head; |
91 | unsigned char wev, rev; /* want, received event set */ |
181 | unsigned char events; |
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182 | unsigned char reify; |
92 | } ANFD; |
183 | } ANFD; |
93 | |
184 | |
94 | static ANFD *anfds; |
185 | static ANFD *anfds; |
95 | static int anfdmax; |
186 | static int anfdmax; |
96 | |
187 | |
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188 | static void |
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189 | anfds_init (ANFD *base, int count) |
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190 | { |
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191 | while (count--) |
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192 | { |
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193 | base->head = 0; |
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194 | base->events = EV_NONE; |
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195 | base->reify = 0; |
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196 | |
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197 | ++base; |
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198 | } |
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199 | } |
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200 | |
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201 | typedef struct |
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202 | { |
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203 | W w; |
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204 | int events; |
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205 | } ANPENDING; |
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206 | |
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207 | static ANPENDING *pendings [NUMPRI]; |
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208 | static int pendingmax [NUMPRI], pendingcnt [NUMPRI]; |
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209 | |
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210 | static void |
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211 | event (W w, int events) |
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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 | |
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219 | w->pending = ++pendingcnt [ABSPRI (w)]; |
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220 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
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221 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
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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); |
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232 | } |
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233 | |
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234 | static void |
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235 | fd_event (int fd, int events) |
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236 | { |
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237 | ANFD *anfd = anfds + fd; |
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238 | struct ev_io *w; |
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239 | |
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240 | for (w = anfd->head; w; w = w->next) |
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241 | { |
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242 | int ev = w->events & events; |
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243 | |
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244 | if (ev) |
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245 | event ((W)w, ev); |
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246 | } |
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247 | } |
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248 | |
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249 | /*****************************************************************************/ |
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250 | |
97 | static int *fdchanges; |
251 | static int *fdchanges; |
98 | static int fdchangemax, fdchangecnt; |
252 | static int fdchangemax, fdchangecnt; |
99 | |
253 | |
100 | static void |
254 | static void |
101 | anfds_init (ANFD *base, int count) |
255 | fd_reify (void) |
102 | { |
256 | { |
103 | while (count--) |
257 | int i; |
104 | { |
258 | |
105 | base->head = 0; |
259 | for (i = 0; i < fdchangecnt; ++i) |
106 | base->wev = base->rev = EV_NONE; |
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107 | ++base; |
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108 | } |
260 | { |
109 | } |
261 | int fd = fdchanges [i]; |
110 | |
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111 | typedef struct |
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112 | { |
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113 | struct ev_watcher *w; |
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114 | int events; |
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115 | } ANPENDING; |
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116 | |
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117 | static ANPENDING *pendings; |
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118 | static int pendingmax, pendingcnt; |
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119 | |
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120 | static void |
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121 | event (struct ev_watcher *w, int events) |
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122 | { |
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123 | w->pending = ++pendingcnt; |
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124 | array_needsize (pendings, pendingmax, pendingcnt, ); |
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125 | pendings [pendingcnt - 1].w = w; |
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126 | pendings [pendingcnt - 1].events = events; |
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127 | } |
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128 | |
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129 | static void |
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130 | fd_event (int fd, int events) |
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131 | { |
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132 | ANFD *anfd = anfds + fd; |
262 | ANFD *anfd = anfds + fd; |
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263 | struct ev_io *w; |
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264 | |
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265 | int events = 0; |
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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 | { |
133 | struct ev_io *w; |
298 | struct ev_io *w; |
134 | |
299 | |
135 | for (w = anfd->head; w; w = w->next) |
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) |
136 | { |
328 | { |
137 | int ev = w->events & events; |
329 | close (fd); |
138 | |
330 | fd_kill (fd); |
139 | if (ev) |
331 | return; |
140 | event ((struct ev_watcher *)w, ev); |
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141 | } |
332 | } |
142 | } |
333 | } |
143 | |
334 | |
144 | /*****************************************************************************/ |
335 | /*****************************************************************************/ |
145 | |
336 | |
146 | static struct ev_timer **atimers; |
337 | static struct ev_timer **timers; |
147 | static int atimermax, atimercnt; |
338 | static int timermax, timercnt; |
148 | |
339 | |
149 | static struct ev_timer **rtimers; |
340 | static struct ev_periodic **periodics; |
150 | static int rtimermax, rtimercnt; |
341 | static int periodicmax, periodiccnt; |
151 | |
342 | |
152 | static void |
343 | static void |
153 | upheap (struct ev_timer **timers, int k) |
344 | upheap (WT *timers, int k) |
154 | { |
345 | { |
155 | struct ev_timer *w = timers [k]; |
346 | WT w = timers [k]; |
156 | |
347 | |
157 | while (k && timers [k >> 1]->at > w->at) |
348 | while (k && timers [k >> 1]->at > w->at) |
158 | { |
349 | { |
159 | timers [k] = timers [k >> 1]; |
350 | timers [k] = timers [k >> 1]; |
160 | timers [k]->active = k + 1; |
351 | timers [k]->active = k + 1; |
… | |
… | |
165 | timers [k]->active = k + 1; |
356 | timers [k]->active = k + 1; |
166 | |
357 | |
167 | } |
358 | } |
168 | |
359 | |
169 | static void |
360 | static void |
170 | downheap (struct ev_timer **timers, int N, int k) |
361 | downheap (WT *timers, int N, int k) |
171 | { |
362 | { |
172 | struct ev_timer *w = timers [k]; |
363 | WT w = timers [k]; |
173 | |
364 | |
174 | while (k < (N >> 1)) |
365 | while (k < (N >> 1)) |
175 | { |
366 | { |
176 | int j = k << 1; |
367 | int j = k << 1; |
177 | |
368 | |
… | |
… | |
193 | /*****************************************************************************/ |
384 | /*****************************************************************************/ |
194 | |
385 | |
195 | typedef struct |
386 | typedef struct |
196 | { |
387 | { |
197 | struct ev_signal *head; |
388 | struct ev_signal *head; |
198 | sig_atomic_t gotsig; |
389 | sig_atomic_t volatile gotsig; |
199 | } ANSIG; |
390 | } ANSIG; |
200 | |
391 | |
201 | static ANSIG *signals; |
392 | static ANSIG *signals; |
202 | static int signalmax; |
393 | static int signalmax; |
203 | |
394 | |
204 | static int sigpipe [2]; |
395 | static int sigpipe [2]; |
205 | static sig_atomic_t gotsig; |
396 | static sig_atomic_t volatile gotsig; |
206 | static struct ev_io sigev; |
397 | static struct ev_io sigev; |
207 | |
398 | |
208 | static void |
399 | static void |
209 | signals_init (ANSIG *base, int count) |
400 | signals_init (ANSIG *base, int count) |
210 | { |
401 | { |
211 | while (count--) |
402 | while (count--) |
212 | { |
403 | { |
213 | base->head = 0; |
404 | base->head = 0; |
214 | base->gotsig = 0; |
405 | base->gotsig = 0; |
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406 | |
215 | ++base; |
407 | ++base; |
216 | } |
408 | } |
217 | } |
409 | } |
218 | |
410 | |
219 | static void |
411 | static void |
… | |
… | |
222 | signals [signum - 1].gotsig = 1; |
414 | signals [signum - 1].gotsig = 1; |
223 | |
415 | |
224 | if (!gotsig) |
416 | if (!gotsig) |
225 | { |
417 | { |
226 | gotsig = 1; |
418 | gotsig = 1; |
227 | write (sigpipe [1], &gotsig, 1); |
419 | write (sigpipe [1], &signum, 1); |
228 | } |
420 | } |
229 | } |
421 | } |
230 | |
422 | |
231 | static void |
423 | static void |
232 | sigcb (struct ev_io *iow, int revents) |
424 | sigcb (struct ev_io *iow, int revents) |
233 | { |
425 | { |
234 | struct ev_signal *w; |
426 | struct ev_signal *w; |
235 | int sig; |
427 | int signum; |
236 | |
428 | |
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429 | read (sigpipe [0], &revents, 1); |
237 | gotsig = 0; |
430 | gotsig = 0; |
238 | read (sigpipe [0], &revents, 1); |
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239 | |
431 | |
240 | for (sig = signalmax; sig--; ) |
432 | for (signum = signalmax; signum--; ) |
241 | if (signals [sig].gotsig) |
433 | if (signals [signum].gotsig) |
242 | { |
434 | { |
243 | signals [sig].gotsig = 0; |
435 | signals [signum].gotsig = 0; |
244 | |
436 | |
245 | for (w = signals [sig].head; w; w = w->next) |
437 | for (w = signals [signum].head; w; w = w->next) |
246 | event ((struct ev_watcher *)w, EV_SIGNAL); |
438 | event ((W)w, EV_SIGNAL); |
247 | } |
439 | } |
248 | } |
440 | } |
249 | |
441 | |
250 | static void |
442 | static void |
251 | siginit (void) |
443 | siginit (void) |
252 | { |
444 | { |
|
|
445 | #ifndef WIN32 |
253 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
446 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
254 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
447 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
255 | |
448 | |
256 | /* rather than sort out wether we really need nb, set it */ |
449 | /* rather than sort out wether we really need nb, set it */ |
257 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
450 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
258 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
451 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
452 | #endif |
259 | |
453 | |
260 | evio_set (&sigev, sigpipe [0], EV_READ); |
454 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
261 | evio_start (&sigev); |
455 | ev_io_start (&sigev); |
262 | } |
456 | } |
263 | |
457 | |
264 | /*****************************************************************************/ |
458 | /*****************************************************************************/ |
265 | |
459 | |
|
|
460 | static struct ev_idle **idles; |
|
|
461 | static int idlemax, idlecnt; |
|
|
462 | |
|
|
463 | static struct ev_prepare **prepares; |
|
|
464 | static int preparemax, preparecnt; |
|
|
465 | |
|
|
466 | static struct ev_check **checks; |
|
|
467 | static int checkmax, checkcnt; |
|
|
468 | |
|
|
469 | /*****************************************************************************/ |
|
|
470 | |
|
|
471 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
472 | static struct ev_signal childev; |
|
|
473 | |
|
|
474 | #ifndef WIN32 |
|
|
475 | |
|
|
476 | #ifndef WCONTINUED |
|
|
477 | # define WCONTINUED 0 |
|
|
478 | #endif |
|
|
479 | |
|
|
480 | static void |
|
|
481 | childcb (struct ev_signal *sw, int revents) |
|
|
482 | { |
|
|
483 | struct ev_child *w; |
|
|
484 | int pid, status; |
|
|
485 | |
|
|
486 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
|
|
487 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
|
|
488 | if (w->pid == pid || !w->pid) |
|
|
489 | { |
|
|
490 | w->status = status; |
|
|
491 | event ((W)w, EV_CHILD); |
|
|
492 | } |
|
|
493 | } |
|
|
494 | |
|
|
495 | #endif |
|
|
496 | |
|
|
497 | /*****************************************************************************/ |
|
|
498 | |
|
|
499 | #if EV_USE_KQUEUE |
|
|
500 | # include "ev_kqueue.c" |
|
|
501 | #endif |
266 | #if HAVE_EPOLL |
502 | #if EV_USE_EPOLL |
267 | # include "ev_epoll.c" |
503 | # include "ev_epoll.c" |
268 | #endif |
504 | #endif |
|
|
505 | #if EV_USE_POLL |
|
|
506 | # include "ev_poll.c" |
|
|
507 | #endif |
269 | #if HAVE_SELECT |
508 | #if EV_USE_SELECT |
270 | # include "ev_select.c" |
509 | # include "ev_select.c" |
271 | #endif |
510 | #endif |
272 | |
511 | |
|
|
512 | int |
|
|
513 | ev_version_major (void) |
|
|
514 | { |
|
|
515 | return EV_VERSION_MAJOR; |
|
|
516 | } |
|
|
517 | |
|
|
518 | int |
|
|
519 | ev_version_minor (void) |
|
|
520 | { |
|
|
521 | return EV_VERSION_MINOR; |
|
|
522 | } |
|
|
523 | |
|
|
524 | /* return true if we are running with elevated privileges and ignore env variables */ |
|
|
525 | static int |
|
|
526 | enable_secure () |
|
|
527 | { |
|
|
528 | return getuid () != geteuid () |
|
|
529 | || getgid () != getegid (); |
|
|
530 | } |
|
|
531 | |
273 | int ev_init (int flags) |
532 | int ev_init (int methods) |
274 | { |
533 | { |
275 | #if HAVE_MONOTONIC |
|
|
276 | { |
|
|
277 | struct timespec ts; |
|
|
278 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
279 | have_monotonic = 1; |
|
|
280 | } |
|
|
281 | #endif |
|
|
282 | |
|
|
283 | ev_now = ev_time (); |
|
|
284 | now = get_clock (); |
|
|
285 | diff = ev_now - now; |
|
|
286 | |
|
|
287 | if (pipe (sigpipe)) |
|
|
288 | return 0; |
|
|
289 | |
|
|
290 | ev_method = EVMETHOD_NONE; |
|
|
291 | #if HAVE_EPOLL |
|
|
292 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
293 | #endif |
|
|
294 | #if HAVE_SELECT |
|
|
295 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
296 | #endif |
|
|
297 | |
|
|
298 | if (ev_method) |
534 | if (!ev_method) |
|
|
535 | { |
|
|
536 | #if EV_USE_MONOTONIC |
299 | { |
537 | { |
|
|
538 | struct timespec ts; |
|
|
539 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
540 | have_monotonic = 1; |
|
|
541 | } |
|
|
542 | #endif |
|
|
543 | |
|
|
544 | ev_now = ev_time (); |
|
|
545 | now = get_clock (); |
|
|
546 | now_floor = now; |
|
|
547 | diff = ev_now - now; |
|
|
548 | |
|
|
549 | if (pipe (sigpipe)) |
|
|
550 | return 0; |
|
|
551 | |
|
|
552 | if (methods == EVMETHOD_AUTO) |
|
|
553 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
554 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
555 | else |
|
|
556 | methods = EVMETHOD_ANY; |
|
|
557 | |
|
|
558 | ev_method = 0; |
|
|
559 | #if EV_USE_KQUEUE |
|
|
560 | if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods); |
|
|
561 | #endif |
|
|
562 | #if EV_USE_EPOLL |
|
|
563 | if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods); |
|
|
564 | #endif |
|
|
565 | #if EV_USE_POLL |
|
|
566 | if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods); |
|
|
567 | #endif |
|
|
568 | #if EV_USE_SELECT |
|
|
569 | if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods); |
|
|
570 | #endif |
|
|
571 | |
|
|
572 | if (ev_method) |
|
|
573 | { |
300 | evw_init (&sigev, sigcb, 0); |
574 | ev_watcher_init (&sigev, sigcb); |
301 | siginit (); |
575 | siginit (); |
|
|
576 | |
|
|
577 | #ifndef WIN32 |
|
|
578 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
579 | ev_signal_start (&childev); |
|
|
580 | #endif |
|
|
581 | } |
302 | } |
582 | } |
303 | |
583 | |
304 | return ev_method; |
584 | return ev_method; |
305 | } |
585 | } |
306 | |
586 | |
307 | /*****************************************************************************/ |
587 | /*****************************************************************************/ |
308 | |
588 | |
309 | void ev_prefork (void) |
589 | void |
|
|
590 | ev_fork_prepare (void) |
310 | { |
591 | { |
|
|
592 | /* nop */ |
311 | } |
593 | } |
312 | |
594 | |
|
|
595 | void |
313 | void ev_postfork_parent (void) |
596 | ev_fork_parent (void) |
314 | { |
597 | { |
|
|
598 | /* nop */ |
315 | } |
599 | } |
316 | |
600 | |
|
|
601 | void |
317 | void ev_postfork_child (void) |
602 | ev_fork_child (void) |
318 | { |
603 | { |
319 | #if HAVE_EPOLL |
604 | #if EV_USE_EPOLL |
320 | if (ev_method == EVMETHOD_EPOLL) |
605 | if (ev_method == EVMETHOD_EPOLL) |
321 | epoll_postfork_child (); |
606 | epoll_postfork_child (); |
322 | #endif |
607 | #endif |
323 | |
608 | |
324 | evio_stop (&sigev); |
609 | ev_io_stop (&sigev); |
325 | close (sigpipe [0]); |
610 | close (sigpipe [0]); |
326 | close (sigpipe [1]); |
611 | close (sigpipe [1]); |
327 | pipe (sigpipe); |
612 | pipe (sigpipe); |
328 | siginit (); |
613 | siginit (); |
329 | } |
614 | } |
330 | |
615 | |
331 | /*****************************************************************************/ |
616 | /*****************************************************************************/ |
332 | |
617 | |
333 | static ev_hook hooks [EVHOOK_NUM]; |
|
|
334 | |
|
|
335 | void |
|
|
336 | ev_hook_register (int type, ev_hook hook) |
|
|
337 | { |
|
|
338 | hooks [type] = hook; |
|
|
339 | } |
|
|
340 | |
|
|
341 | void |
|
|
342 | ev_hook_unregister (int type, ev_hook hook) |
|
|
343 | { |
|
|
344 | hooks [type] = 0; |
|
|
345 | } |
|
|
346 | |
|
|
347 | static void |
618 | static void |
348 | hook_call (int type) |
619 | call_pending (void) |
349 | { |
620 | { |
350 | if (hooks [type]) |
|
|
351 | hooks [type] (); |
|
|
352 | } |
|
|
353 | |
|
|
354 | static void |
|
|
355 | fd_reify (void) |
|
|
356 | { |
|
|
357 | int i; |
621 | int pri; |
358 | |
622 | |
359 | for (i = 0; i < fdchangecnt; ++i) |
623 | for (pri = NUMPRI; pri--; ) |
360 | { |
624 | while (pendingcnt [pri]) |
361 | int fd = fdchanges [i]; |
|
|
362 | ANFD *anfd = anfds + fd; |
|
|
363 | struct ev_io *w; |
|
|
364 | |
|
|
365 | int wev = 0; |
|
|
366 | |
|
|
367 | for (w = anfd->head; w; w = w->next) |
|
|
368 | wev |= w->events; |
|
|
369 | |
|
|
370 | if (anfd->wev != wev) |
|
|
371 | { |
625 | { |
372 | method_modify (fd, anfd->wev, wev); |
626 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
373 | anfd->wev = wev; |
|
|
374 | } |
|
|
375 | } |
|
|
376 | |
627 | |
377 | fdchangecnt = 0; |
|
|
378 | } |
|
|
379 | |
|
|
380 | static void |
|
|
381 | call_pending () |
|
|
382 | { |
|
|
383 | int i; |
|
|
384 | |
|
|
385 | for (i = 0; i < pendingcnt; ++i) |
|
|
386 | { |
|
|
387 | ANPENDING *p = pendings + i; |
|
|
388 | |
|
|
389 | if (p->w) |
628 | if (p->w) |
390 | { |
629 | { |
391 | p->w->pending = 0; |
630 | p->w->pending = 0; |
392 | p->w->cb (p->w, p->events); |
631 | p->w->cb (p->w, p->events); |
393 | } |
632 | } |
394 | } |
633 | } |
395 | |
|
|
396 | pendingcnt = 0; |
|
|
397 | } |
634 | } |
398 | |
635 | |
399 | static void |
636 | static void |
400 | timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now) |
637 | timers_reify (void) |
401 | { |
638 | { |
402 | while (timercnt && timers [0]->at <= now) |
639 | while (timercnt && timers [0]->at <= now) |
403 | { |
640 | { |
404 | struct ev_timer *w = timers [0]; |
641 | struct ev_timer *w = timers [0]; |
405 | |
642 | |
406 | /* first reschedule or stop timer */ |
643 | /* first reschedule or stop timer */ |
407 | if (w->repeat) |
644 | if (w->repeat) |
408 | { |
645 | { |
409 | if (w->is_abs) |
646 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
410 | w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat; |
|
|
411 | else |
|
|
412 | w->at = now + w->repeat; |
647 | w->at = now + w->repeat; |
413 | |
|
|
414 | assert (w->at > now); |
|
|
415 | |
|
|
416 | downheap (timers, timercnt, 0); |
648 | downheap ((WT *)timers, timercnt, 0); |
417 | } |
649 | } |
418 | else |
650 | else |
419 | { |
|
|
420 | evtimer_stop (w); /* nonrepeating: stop timer */ |
651 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
421 | --timercnt; /* maybe pass by reference instead? */ |
652 | |
|
|
653 | event ((W)w, EV_TIMEOUT); |
|
|
654 | } |
|
|
655 | } |
|
|
656 | |
|
|
657 | static void |
|
|
658 | periodics_reify (void) |
|
|
659 | { |
|
|
660 | while (periodiccnt && periodics [0]->at <= ev_now) |
|
|
661 | { |
|
|
662 | struct ev_periodic *w = periodics [0]; |
|
|
663 | |
|
|
664 | /* first reschedule or stop timer */ |
|
|
665 | if (w->interval) |
422 | } |
666 | { |
|
|
667 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
|
|
668 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
|
|
669 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
670 | } |
|
|
671 | else |
|
|
672 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
423 | |
673 | |
424 | event ((struct ev_watcher *)w, EV_TIMEOUT); |
674 | event ((W)w, EV_PERIODIC); |
425 | } |
675 | } |
426 | } |
676 | } |
427 | |
677 | |
428 | static void |
678 | static void |
429 | time_update () |
679 | periodics_reschedule (ev_tstamp diff) |
430 | { |
680 | { |
431 | int i; |
681 | int i; |
432 | ev_now = ev_time (); |
|
|
433 | |
682 | |
434 | if (have_monotonic) |
683 | /* adjust periodics after time jump */ |
|
|
684 | for (i = 0; i < periodiccnt; ++i) |
435 | { |
685 | { |
436 | ev_tstamp odiff = diff; |
686 | struct ev_periodic *w = periodics [i]; |
437 | |
687 | |
438 | /* detecting time jumps is much more difficult */ |
688 | if (w->interval) |
439 | for (i = 2; --i; ) /* loop a few times, before making important decisions */ |
|
|
440 | { |
|
|
441 | now = get_clock (); |
|
|
442 | diff = ev_now - now; |
|
|
443 | |
|
|
444 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
445 | return; /* all is well */ |
|
|
446 | |
|
|
447 | ev_now = ev_time (); |
|
|
448 | } |
689 | { |
|
|
690 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
449 | |
691 | |
450 | /* time jump detected, reschedule atimers */ |
692 | if (fabs (diff) >= 1e-4) |
451 | for (i = 0; i < atimercnt; ++i) |
693 | { |
|
|
694 | ev_periodic_stop (w); |
|
|
695 | ev_periodic_start (w); |
|
|
696 | |
|
|
697 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
698 | } |
452 | { |
699 | } |
453 | struct ev_timer *w = atimers [i]; |
700 | } |
454 | w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
701 | } |
455 | } |
702 | |
|
|
703 | static int |
|
|
704 | time_update_monotonic (void) |
|
|
705 | { |
|
|
706 | now = get_clock (); |
|
|
707 | |
|
|
708 | if (expect_true (now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
709 | { |
|
|
710 | ev_now = now + diff; |
|
|
711 | return 0; |
456 | } |
712 | } |
457 | else |
713 | else |
458 | { |
714 | { |
|
|
715 | now_floor = now; |
|
|
716 | ev_now = ev_time (); |
|
|
717 | return 1; |
|
|
718 | } |
|
|
719 | } |
|
|
720 | |
|
|
721 | static void |
|
|
722 | time_update (void) |
|
|
723 | { |
|
|
724 | int i; |
|
|
725 | |
|
|
726 | #if EV_USE_MONOTONIC |
|
|
727 | if (expect_true (have_monotonic)) |
|
|
728 | { |
|
|
729 | if (time_update_monotonic ()) |
|
|
730 | { |
|
|
731 | ev_tstamp odiff = diff; |
|
|
732 | |
|
|
733 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
734 | { |
|
|
735 | diff = ev_now - now; |
|
|
736 | |
|
|
737 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
738 | return; /* all is well */ |
|
|
739 | |
|
|
740 | ev_now = ev_time (); |
|
|
741 | now = get_clock (); |
|
|
742 | now_floor = now; |
|
|
743 | } |
|
|
744 | |
|
|
745 | periodics_reschedule (diff - odiff); |
|
|
746 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
747 | } |
|
|
748 | } |
|
|
749 | else |
|
|
750 | #endif |
|
|
751 | { |
|
|
752 | ev_now = ev_time (); |
|
|
753 | |
459 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
754 | if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
460 | /* time jump detected, adjust rtimers */ |
755 | { |
|
|
756 | periodics_reschedule (ev_now - now); |
|
|
757 | |
|
|
758 | /* adjust timers. this is easy, as the offset is the same for all */ |
461 | for (i = 0; i < rtimercnt; ++i) |
759 | for (i = 0; i < timercnt; ++i) |
462 | rtimers [i]->at += ev_now - now; |
760 | timers [i]->at += diff; |
|
|
761 | } |
463 | |
762 | |
464 | now = ev_now; |
763 | now = ev_now; |
465 | } |
764 | } |
466 | } |
765 | } |
467 | |
766 | |
468 | int ev_loop_done; |
767 | int ev_loop_done; |
469 | |
768 | |
470 | void ev_loop (int flags) |
769 | void ev_loop (int flags) |
471 | { |
770 | { |
472 | double block; |
771 | double block; |
473 | ev_loop_done = flags & EVLOOP_ONESHOT; |
772 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
474 | |
773 | |
475 | do |
774 | do |
476 | { |
775 | { |
477 | hook_call (EVHOOK_PREPOLL); |
776 | /* queue check watchers (and execute them) */ |
|
|
777 | if (expect_false (preparecnt)) |
|
|
778 | { |
|
|
779 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
|
|
780 | call_pending (); |
|
|
781 | } |
478 | |
782 | |
479 | /* update fd-related kernel structures */ |
783 | /* update fd-related kernel structures */ |
480 | fd_reify (); |
784 | fd_reify (); |
481 | |
785 | |
482 | /* calculate blocking time */ |
786 | /* calculate blocking time */ |
|
|
787 | |
|
|
788 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
789 | always have timers, we just calculate it always */ |
|
|
790 | #if EV_USE_MONOTONIC |
|
|
791 | if (expect_true (have_monotonic)) |
|
|
792 | time_update_monotonic (); |
|
|
793 | else |
|
|
794 | #endif |
|
|
795 | { |
|
|
796 | ev_now = ev_time (); |
|
|
797 | now = ev_now; |
|
|
798 | } |
|
|
799 | |
483 | if (flags & EVLOOP_NONBLOCK) |
800 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
484 | block = 0.; |
801 | block = 0.; |
485 | else |
802 | else |
486 | { |
803 | { |
487 | block = MAX_BLOCKTIME; |
804 | block = MAX_BLOCKTIME; |
488 | |
805 | |
489 | if (rtimercnt) |
806 | if (timercnt) |
490 | { |
807 | { |
491 | ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge; |
808 | ev_tstamp to = timers [0]->at - now + method_fudge; |
492 | if (block > to) block = to; |
809 | if (block > to) block = to; |
493 | } |
810 | } |
494 | |
811 | |
495 | if (atimercnt) |
812 | if (periodiccnt) |
496 | { |
813 | { |
497 | ev_tstamp to = atimers [0]->at - ev_time () + method_fudge; |
814 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
498 | if (block > to) block = to; |
815 | if (block > to) block = to; |
499 | } |
816 | } |
500 | |
817 | |
501 | if (block < 0.) block = 0.; |
818 | if (block < 0.) block = 0.; |
502 | } |
819 | } |
… | |
… | |
504 | method_poll (block); |
821 | method_poll (block); |
505 | |
822 | |
506 | /* update ev_now, do magic */ |
823 | /* update ev_now, do magic */ |
507 | time_update (); |
824 | time_update (); |
508 | |
825 | |
509 | hook_call (EVHOOK_POSTPOLL); |
|
|
510 | |
|
|
511 | /* put pending timers into pendign queue and reschedule them */ |
826 | /* queue pending timers and reschedule them */ |
512 | /* absolute timers first */ |
827 | timers_reify (); /* relative timers called last */ |
513 | timers_reify (atimers, atimercnt, ev_now); |
828 | periodics_reify (); /* absolute timers called first */ |
514 | /* relative timers second */ |
829 | |
515 | timers_reify (rtimers, rtimercnt, now); |
830 | /* queue idle watchers unless io or timers are pending */ |
|
|
831 | if (!pendingcnt) |
|
|
832 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
|
|
833 | |
|
|
834 | /* queue check watchers, to be executed first */ |
|
|
835 | if (checkcnt) |
|
|
836 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
516 | |
837 | |
517 | call_pending (); |
838 | call_pending (); |
518 | } |
839 | } |
519 | while (!ev_loop_done); |
840 | while (!ev_loop_done); |
520 | } |
|
|
521 | |
841 | |
522 | /*****************************************************************************/ |
842 | if (ev_loop_done != 2) |
|
|
843 | ev_loop_done = 0; |
|
|
844 | } |
523 | |
845 | |
|
|
846 | /*****************************************************************************/ |
|
|
847 | |
524 | static void |
848 | static void |
525 | wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
849 | wlist_add (WL *head, WL elem) |
526 | { |
850 | { |
527 | elem->next = *head; |
851 | elem->next = *head; |
528 | *head = elem; |
852 | *head = elem; |
529 | } |
853 | } |
530 | |
854 | |
531 | static void |
855 | static void |
532 | wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
856 | wlist_del (WL *head, WL elem) |
533 | { |
857 | { |
534 | while (*head) |
858 | while (*head) |
535 | { |
859 | { |
536 | if (*head == elem) |
860 | if (*head == elem) |
537 | { |
861 | { |
… | |
… | |
542 | head = &(*head)->next; |
866 | head = &(*head)->next; |
543 | } |
867 | } |
544 | } |
868 | } |
545 | |
869 | |
546 | static void |
870 | static void |
547 | ev_start (struct ev_watcher *w, int active) |
871 | ev_clear_pending (W w) |
548 | { |
872 | { |
|
|
873 | if (w->pending) |
|
|
874 | { |
|
|
875 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
549 | w->pending = 0; |
876 | w->pending = 0; |
|
|
877 | } |
|
|
878 | } |
|
|
879 | |
|
|
880 | static void |
|
|
881 | ev_start (W w, int active) |
|
|
882 | { |
|
|
883 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
884 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
885 | |
550 | w->active = active; |
886 | w->active = active; |
551 | } |
887 | } |
552 | |
888 | |
553 | static void |
889 | static void |
554 | ev_stop (struct ev_watcher *w) |
890 | ev_stop (W w) |
555 | { |
891 | { |
556 | if (w->pending) |
|
|
557 | pendings [w->pending - 1].w = 0; |
|
|
558 | |
|
|
559 | w->active = 0; |
892 | w->active = 0; |
560 | /* nop */ |
|
|
561 | } |
893 | } |
562 | |
894 | |
563 | /*****************************************************************************/ |
895 | /*****************************************************************************/ |
564 | |
896 | |
565 | void |
897 | void |
566 | evio_start (struct ev_io *w) |
898 | ev_io_start (struct ev_io *w) |
567 | { |
899 | { |
|
|
900 | int fd = w->fd; |
|
|
901 | |
568 | if (ev_is_active (w)) |
902 | if (ev_is_active (w)) |
569 | return; |
903 | return; |
570 | |
904 | |
571 | int fd = w->fd; |
905 | assert (("ev_io_start called with negative fd", fd >= 0)); |
572 | |
906 | |
573 | ev_start ((struct ev_watcher *)w, 1); |
907 | ev_start ((W)w, 1); |
574 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
908 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
575 | wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w); |
909 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
576 | |
910 | |
577 | ++fdchangecnt; |
911 | fd_change (fd); |
578 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
579 | fdchanges [fdchangecnt - 1] = fd; |
|
|
580 | } |
912 | } |
581 | |
913 | |
582 | void |
914 | void |
583 | evio_stop (struct ev_io *w) |
915 | ev_io_stop (struct ev_io *w) |
584 | { |
916 | { |
|
|
917 | ev_clear_pending ((W)w); |
585 | if (!ev_is_active (w)) |
918 | if (!ev_is_active (w)) |
586 | return; |
919 | return; |
587 | |
920 | |
588 | wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w); |
921 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
589 | ev_stop ((struct ev_watcher *)w); |
922 | ev_stop ((W)w); |
590 | |
923 | |
591 | ++fdchangecnt; |
924 | fd_change (w->fd); |
592 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
593 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
594 | } |
925 | } |
595 | |
926 | |
596 | void |
927 | void |
597 | evtimer_start (struct ev_timer *w) |
928 | ev_timer_start (struct ev_timer *w) |
598 | { |
929 | { |
599 | if (ev_is_active (w)) |
930 | if (ev_is_active (w)) |
600 | return; |
931 | return; |
601 | |
932 | |
602 | if (w->is_abs) |
933 | w->at += now; |
|
|
934 | |
|
|
935 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
936 | |
|
|
937 | ev_start ((W)w, ++timercnt); |
|
|
938 | array_needsize (timers, timermax, timercnt, ); |
|
|
939 | timers [timercnt - 1] = w; |
|
|
940 | upheap ((WT *)timers, timercnt - 1); |
|
|
941 | } |
|
|
942 | |
|
|
943 | void |
|
|
944 | ev_timer_stop (struct ev_timer *w) |
|
|
945 | { |
|
|
946 | ev_clear_pending ((W)w); |
|
|
947 | if (!ev_is_active (w)) |
|
|
948 | return; |
|
|
949 | |
|
|
950 | if (w->active < timercnt--) |
|
|
951 | { |
|
|
952 | timers [w->active - 1] = timers [timercnt]; |
|
|
953 | downheap ((WT *)timers, timercnt, w->active - 1); |
603 | { |
954 | } |
604 | /* this formula differs from the one in timer_reify becuse we do not round up */ |
955 | |
|
|
956 | w->at = w->repeat; |
|
|
957 | |
|
|
958 | ev_stop ((W)w); |
|
|
959 | } |
|
|
960 | |
|
|
961 | void |
|
|
962 | ev_timer_again (struct ev_timer *w) |
|
|
963 | { |
|
|
964 | if (ev_is_active (w)) |
|
|
965 | { |
605 | if (w->repeat) |
966 | if (w->repeat) |
|
|
967 | { |
|
|
968 | w->at = now + w->repeat; |
|
|
969 | downheap ((WT *)timers, timercnt, w->active - 1); |
|
|
970 | } |
|
|
971 | else |
|
|
972 | ev_timer_stop (w); |
|
|
973 | } |
|
|
974 | else if (w->repeat) |
|
|
975 | ev_timer_start (w); |
|
|
976 | } |
|
|
977 | |
|
|
978 | void |
|
|
979 | ev_periodic_start (struct ev_periodic *w) |
|
|
980 | { |
|
|
981 | if (ev_is_active (w)) |
|
|
982 | return; |
|
|
983 | |
|
|
984 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
985 | |
|
|
986 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
987 | if (w->interval) |
606 | w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
988 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
607 | |
989 | |
608 | ev_start ((struct ev_watcher *)w, ++atimercnt); |
990 | ev_start ((W)w, ++periodiccnt); |
609 | array_needsize (atimers, atimermax, atimercnt, ); |
991 | array_needsize (periodics, periodicmax, periodiccnt, ); |
610 | atimers [atimercnt - 1] = w; |
992 | periodics [periodiccnt - 1] = w; |
611 | upheap (atimers, atimercnt - 1); |
993 | upheap ((WT *)periodics, periodiccnt - 1); |
612 | } |
|
|
613 | else |
|
|
614 | { |
|
|
615 | w->at += now; |
|
|
616 | |
|
|
617 | ev_start ((struct ev_watcher *)w, ++rtimercnt); |
|
|
618 | array_needsize (rtimers, rtimermax, rtimercnt, ); |
|
|
619 | rtimers [rtimercnt - 1] = w; |
|
|
620 | upheap (rtimers, rtimercnt - 1); |
|
|
621 | } |
|
|
622 | |
|
|
623 | } |
994 | } |
624 | |
995 | |
625 | void |
996 | void |
626 | evtimer_stop (struct ev_timer *w) |
997 | ev_periodic_stop (struct ev_periodic *w) |
627 | { |
998 | { |
|
|
999 | ev_clear_pending ((W)w); |
628 | if (!ev_is_active (w)) |
1000 | if (!ev_is_active (w)) |
629 | return; |
1001 | return; |
630 | |
1002 | |
631 | if (w->is_abs) |
|
|
632 | { |
|
|
633 | if (w->active < atimercnt--) |
1003 | if (w->active < periodiccnt--) |
634 | { |
|
|
635 | atimers [w->active - 1] = atimers [atimercnt]; |
|
|
636 | downheap (atimers, atimercnt, w->active - 1); |
|
|
637 | } |
|
|
638 | } |
1004 | { |
639 | else |
1005 | periodics [w->active - 1] = periodics [periodiccnt]; |
|
|
1006 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
640 | { |
1007 | } |
641 | if (w->active < rtimercnt--) |
|
|
642 | { |
|
|
643 | rtimers [w->active - 1] = rtimers [rtimercnt]; |
|
|
644 | downheap (rtimers, rtimercnt, w->active - 1); |
|
|
645 | } |
|
|
646 | } |
|
|
647 | |
1008 | |
648 | ev_stop ((struct ev_watcher *)w); |
1009 | ev_stop ((W)w); |
649 | } |
1010 | } |
650 | |
1011 | |
651 | void |
1012 | void |
652 | evsignal_start (struct ev_signal *w) |
1013 | ev_signal_start (struct ev_signal *w) |
653 | { |
1014 | { |
654 | if (ev_is_active (w)) |
1015 | if (ev_is_active (w)) |
655 | return; |
1016 | return; |
656 | |
1017 | |
657 | ev_start ((struct ev_watcher *)w, 1); |
1018 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1019 | |
|
|
1020 | ev_start ((W)w, 1); |
658 | array_needsize (signals, signalmax, w->signum, signals_init); |
1021 | array_needsize (signals, signalmax, w->signum, signals_init); |
659 | wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1].head, (struct ev_watcher_list *)w); |
1022 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
660 | |
1023 | |
661 | if (!w->next) |
1024 | if (!w->next) |
662 | { |
1025 | { |
663 | struct sigaction sa; |
1026 | struct sigaction sa; |
664 | sa.sa_handler = sighandler; |
1027 | sa.sa_handler = sighandler; |
… | |
… | |
667 | sigaction (w->signum, &sa, 0); |
1030 | sigaction (w->signum, &sa, 0); |
668 | } |
1031 | } |
669 | } |
1032 | } |
670 | |
1033 | |
671 | void |
1034 | void |
672 | evsignal_stop (struct ev_signal *w) |
1035 | ev_signal_stop (struct ev_signal *w) |
673 | { |
1036 | { |
|
|
1037 | ev_clear_pending ((W)w); |
674 | if (!ev_is_active (w)) |
1038 | if (!ev_is_active (w)) |
675 | return; |
1039 | return; |
676 | |
1040 | |
677 | wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1].head, (struct ev_watcher_list *)w); |
1041 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
678 | ev_stop ((struct ev_watcher *)w); |
1042 | ev_stop ((W)w); |
679 | |
1043 | |
680 | if (!signals [w->signum - 1].head) |
1044 | if (!signals [w->signum - 1].head) |
681 | signal (w->signum, SIG_DFL); |
1045 | signal (w->signum, SIG_DFL); |
682 | } |
1046 | } |
683 | |
1047 | |
|
|
1048 | void |
|
|
1049 | ev_idle_start (struct ev_idle *w) |
|
|
1050 | { |
|
|
1051 | if (ev_is_active (w)) |
|
|
1052 | return; |
|
|
1053 | |
|
|
1054 | ev_start ((W)w, ++idlecnt); |
|
|
1055 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
1056 | idles [idlecnt - 1] = w; |
|
|
1057 | } |
|
|
1058 | |
|
|
1059 | void |
|
|
1060 | ev_idle_stop (struct ev_idle *w) |
|
|
1061 | { |
|
|
1062 | ev_clear_pending ((W)w); |
|
|
1063 | if (ev_is_active (w)) |
|
|
1064 | return; |
|
|
1065 | |
|
|
1066 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
1067 | ev_stop ((W)w); |
|
|
1068 | } |
|
|
1069 | |
|
|
1070 | void |
|
|
1071 | ev_prepare_start (struct ev_prepare *w) |
|
|
1072 | { |
|
|
1073 | if (ev_is_active (w)) |
|
|
1074 | return; |
|
|
1075 | |
|
|
1076 | ev_start ((W)w, ++preparecnt); |
|
|
1077 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1078 | prepares [preparecnt - 1] = w; |
|
|
1079 | } |
|
|
1080 | |
|
|
1081 | void |
|
|
1082 | ev_prepare_stop (struct ev_prepare *w) |
|
|
1083 | { |
|
|
1084 | ev_clear_pending ((W)w); |
|
|
1085 | if (ev_is_active (w)) |
|
|
1086 | return; |
|
|
1087 | |
|
|
1088 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
1089 | ev_stop ((W)w); |
|
|
1090 | } |
|
|
1091 | |
|
|
1092 | void |
|
|
1093 | ev_check_start (struct ev_check *w) |
|
|
1094 | { |
|
|
1095 | if (ev_is_active (w)) |
|
|
1096 | return; |
|
|
1097 | |
|
|
1098 | ev_start ((W)w, ++checkcnt); |
|
|
1099 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
1100 | checks [checkcnt - 1] = w; |
|
|
1101 | } |
|
|
1102 | |
|
|
1103 | void |
|
|
1104 | ev_check_stop (struct ev_check *w) |
|
|
1105 | { |
|
|
1106 | ev_clear_pending ((W)w); |
|
|
1107 | if (ev_is_active (w)) |
|
|
1108 | return; |
|
|
1109 | |
|
|
1110 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
1111 | ev_stop ((W)w); |
|
|
1112 | } |
|
|
1113 | |
|
|
1114 | void |
|
|
1115 | ev_child_start (struct ev_child *w) |
|
|
1116 | { |
|
|
1117 | if (ev_is_active (w)) |
|
|
1118 | return; |
|
|
1119 | |
|
|
1120 | ev_start ((W)w, 1); |
|
|
1121 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1122 | } |
|
|
1123 | |
|
|
1124 | void |
|
|
1125 | ev_child_stop (struct ev_child *w) |
|
|
1126 | { |
|
|
1127 | ev_clear_pending ((W)w); |
|
|
1128 | if (ev_is_active (w)) |
|
|
1129 | return; |
|
|
1130 | |
|
|
1131 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1132 | ev_stop ((W)w); |
|
|
1133 | } |
|
|
1134 | |
684 | /*****************************************************************************/ |
1135 | /*****************************************************************************/ |
|
|
1136 | |
|
|
1137 | struct ev_once |
|
|
1138 | { |
|
|
1139 | struct ev_io io; |
|
|
1140 | struct ev_timer to; |
|
|
1141 | void (*cb)(int revents, void *arg); |
|
|
1142 | void *arg; |
|
|
1143 | }; |
|
|
1144 | |
|
|
1145 | static void |
|
|
1146 | once_cb (struct ev_once *once, int revents) |
|
|
1147 | { |
|
|
1148 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
1149 | void *arg = once->arg; |
|
|
1150 | |
|
|
1151 | ev_io_stop (&once->io); |
|
|
1152 | ev_timer_stop (&once->to); |
|
|
1153 | free (once); |
|
|
1154 | |
|
|
1155 | cb (revents, arg); |
|
|
1156 | } |
|
|
1157 | |
|
|
1158 | static void |
|
|
1159 | once_cb_io (struct ev_io *w, int revents) |
|
|
1160 | { |
|
|
1161 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
|
|
1162 | } |
|
|
1163 | |
|
|
1164 | static void |
|
|
1165 | once_cb_to (struct ev_timer *w, int revents) |
|
|
1166 | { |
|
|
1167 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
|
|
1168 | } |
|
|
1169 | |
|
|
1170 | void |
|
|
1171 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
|
|
1172 | { |
|
|
1173 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
|
|
1174 | |
|
|
1175 | if (!once) |
|
|
1176 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
1177 | else |
|
|
1178 | { |
|
|
1179 | once->cb = cb; |
|
|
1180 | once->arg = arg; |
|
|
1181 | |
|
|
1182 | ev_watcher_init (&once->io, once_cb_io); |
|
|
1183 | if (fd >= 0) |
|
|
1184 | { |
|
|
1185 | ev_io_set (&once->io, fd, events); |
|
|
1186 | ev_io_start (&once->io); |
|
|
1187 | } |
|
|
1188 | |
|
|
1189 | ev_watcher_init (&once->to, once_cb_to); |
|
|
1190 | if (timeout >= 0.) |
|
|
1191 | { |
|
|
1192 | ev_timer_set (&once->to, timeout, 0.); |
|
|
1193 | ev_timer_start (&once->to); |
|
|
1194 | } |
|
|
1195 | } |
|
|
1196 | } |
|
|
1197 | |
|
|
1198 | /*****************************************************************************/ |
|
|
1199 | |
685 | #if 1 |
1200 | #if 0 |
|
|
1201 | |
|
|
1202 | struct ev_io wio; |
686 | |
1203 | |
687 | static void |
1204 | static void |
688 | sin_cb (struct ev_io *w, int revents) |
1205 | sin_cb (struct ev_io *w, int revents) |
689 | { |
1206 | { |
690 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
1207 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
… | |
… | |
692 | |
1209 | |
693 | static void |
1210 | static void |
694 | ocb (struct ev_timer *w, int revents) |
1211 | ocb (struct ev_timer *w, int revents) |
695 | { |
1212 | { |
696 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
1213 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
697 | evtimer_stop (w); |
1214 | ev_timer_stop (w); |
698 | evtimer_start (w); |
1215 | ev_timer_start (w); |
699 | } |
1216 | } |
700 | |
1217 | |
701 | static void |
1218 | static void |
702 | scb (struct ev_signal *w, int revents) |
1219 | scb (struct ev_signal *w, int revents) |
703 | { |
1220 | { |
704 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
1221 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1222 | ev_io_stop (&wio); |
|
|
1223 | ev_io_start (&wio); |
|
|
1224 | } |
|
|
1225 | |
|
|
1226 | static void |
|
|
1227 | gcb (struct ev_signal *w, int revents) |
|
|
1228 | { |
|
|
1229 | fprintf (stderr, "generic %x\n", revents); |
|
|
1230 | |
705 | } |
1231 | } |
706 | |
1232 | |
707 | int main (void) |
1233 | int main (void) |
708 | { |
1234 | { |
709 | struct ev_io sin; |
|
|
710 | |
|
|
711 | ev_init (0); |
1235 | ev_init (0); |
712 | |
1236 | |
713 | evw_init (&sin, sin_cb, 55); |
|
|
714 | evio_set (&sin, 0, EV_READ); |
1237 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
715 | evio_start (&sin); |
1238 | ev_io_start (&wio); |
716 | |
1239 | |
717 | struct ev_timer t[10000]; |
1240 | struct ev_timer t[10000]; |
718 | |
1241 | |
719 | #if 1 |
1242 | #if 0 |
720 | int i; |
1243 | int i; |
721 | for (i = 0; i < 10000; ++i) |
1244 | for (i = 0; i < 10000; ++i) |
722 | { |
1245 | { |
723 | struct ev_timer *w = t + i; |
1246 | struct ev_timer *w = t + i; |
724 | evw_init (w, ocb, i); |
1247 | ev_watcher_init (w, ocb, i); |
725 | evtimer_set_abs (w, drand48 (), 0.99775533); |
1248 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
726 | evtimer_start (w); |
1249 | ev_timer_start (w); |
727 | if (drand48 () < 0.5) |
1250 | if (drand48 () < 0.5) |
728 | evtimer_stop (w); |
1251 | ev_timer_stop (w); |
729 | } |
1252 | } |
730 | #endif |
1253 | #endif |
731 | |
1254 | |
732 | struct ev_timer t1; |
1255 | struct ev_timer t1; |
733 | evw_init (&t1, ocb, 0); |
1256 | ev_timer_init (&t1, ocb, 5, 10); |
734 | evtimer_set_abs (&t1, 5, 10); |
|
|
735 | evtimer_start (&t1); |
1257 | ev_timer_start (&t1); |
736 | |
1258 | |
737 | struct ev_signal sig; |
1259 | struct ev_signal sig; |
738 | evw_init (&sig, scb, 65535); |
|
|
739 | evsignal_set (&sig, SIGQUIT); |
1260 | ev_signal_init (&sig, scb, SIGQUIT); |
740 | evsignal_start (&sig); |
1261 | ev_signal_start (&sig); |
|
|
1262 | |
|
|
1263 | struct ev_check cw; |
|
|
1264 | ev_check_init (&cw, gcb); |
|
|
1265 | ev_check_start (&cw); |
|
|
1266 | |
|
|
1267 | struct ev_idle iw; |
|
|
1268 | ev_idle_init (&iw, gcb); |
|
|
1269 | ev_idle_start (&iw); |
741 | |
1270 | |
742 | ev_loop (0); |
1271 | ev_loop (0); |
743 | |
1272 | |
744 | return 0; |
1273 | return 0; |
745 | } |
1274 | } |