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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 | |
14 | #define HAVE_EPOLL 1 |
53 | /**/ |
15 | |
54 | |
16 | #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 | |
17 | # ifdef CLOCK_MONOTONIC |
81 | #ifndef CLOCK_MONOTONIC |
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82 | # undef EV_USE_MONOTONIC |
18 | # define HAVE_MONOTONIC 1 |
83 | # define EV_USE_MONOTONIC 0 |
19 | # endif |
84 | #endif |
20 | #endif |
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21 | |
85 | |
22 | #ifndef HAVE_SELECT |
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23 | # define HAVE_SELECT 1 |
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24 | #endif |
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25 | |
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26 | #ifndef HAVE_EPOLL |
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27 | # define HAVE_EPOLL 0 |
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28 | #endif |
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29 | |
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30 | #ifndef HAVE_REALTIME |
86 | #ifndef CLOCK_REALTIME |
31 | # 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 |
32 | #endif |
89 | #endif |
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90 | |
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91 | /**/ |
33 | |
92 | |
34 | #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) */ |
35 | #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 */ |
36 | |
97 | |
37 | #include "ev.h" |
98 | #include "ev.h" |
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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) |
38 | |
113 | |
39 | typedef struct ev_watcher *W; |
114 | typedef struct ev_watcher *W; |
40 | typedef struct ev_watcher_list *WL; |
115 | typedef struct ev_watcher_list *WL; |
41 | typedef struct ev_watcher_time *WT; |
116 | typedef struct ev_watcher_time *WT; |
42 | |
117 | |
43 | static ev_tstamp now, diff; /* monotonic clock */ |
118 | static ev_tstamp now_floor, now, diff; /* monotonic clock */ |
44 | ev_tstamp ev_now; |
119 | ev_tstamp ev_now; |
45 | int ev_method; |
120 | int ev_method; |
46 | |
121 | |
47 | static int have_monotonic; /* runtime */ |
122 | static int have_monotonic; /* runtime */ |
48 | |
123 | |
… | |
… | |
53 | /*****************************************************************************/ |
128 | /*****************************************************************************/ |
54 | |
129 | |
55 | ev_tstamp |
130 | ev_tstamp |
56 | ev_time (void) |
131 | ev_time (void) |
57 | { |
132 | { |
58 | #if HAVE_REALTIME |
133 | #if EV_USE_REALTIME |
59 | struct timespec ts; |
134 | struct timespec ts; |
60 | clock_gettime (CLOCK_REALTIME, &ts); |
135 | clock_gettime (CLOCK_REALTIME, &ts); |
61 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
136 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
62 | #else |
137 | #else |
63 | struct timeval tv; |
138 | struct timeval tv; |
… | |
… | |
67 | } |
142 | } |
68 | |
143 | |
69 | static ev_tstamp |
144 | static ev_tstamp |
70 | get_clock (void) |
145 | get_clock (void) |
71 | { |
146 | { |
72 | #if HAVE_MONOTONIC |
147 | #if EV_USE_MONOTONIC |
73 | if (have_monotonic) |
148 | if (expect_true (have_monotonic)) |
74 | { |
149 | { |
75 | struct timespec ts; |
150 | struct timespec ts; |
76 | clock_gettime (CLOCK_MONOTONIC, &ts); |
151 | clock_gettime (CLOCK_MONOTONIC, &ts); |
77 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
152 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
78 | } |
153 | } |
79 | #endif |
154 | #endif |
80 | |
155 | |
81 | return ev_time (); |
156 | return ev_time (); |
82 | } |
157 | } |
83 | |
158 | |
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159 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
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160 | |
84 | #define array_needsize(base,cur,cnt,init) \ |
161 | #define array_needsize(base,cur,cnt,init) \ |
85 | if ((cnt) > cur) \ |
162 | if (expect_false ((cnt) > cur)) \ |
86 | { \ |
163 | { \ |
87 | int newcnt = cur ? cur << 1 : 16; \ |
164 | int newcnt = cur; \ |
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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 | \ |
88 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
171 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
89 | init (base + cur, newcnt - cur); \ |
172 | init (base + cur, newcnt - cur); \ |
90 | cur = newcnt; \ |
173 | cur = newcnt; \ |
91 | } |
174 | } |
92 | |
175 | |
93 | /*****************************************************************************/ |
176 | /*****************************************************************************/ |
94 | |
177 | |
95 | typedef struct |
178 | typedef struct |
96 | { |
179 | { |
97 | struct ev_io *head; |
180 | struct ev_io *head; |
98 | unsigned char wev, rev; /* want, received event set */ |
181 | unsigned char events; |
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182 | unsigned char reify; |
99 | } ANFD; |
183 | } ANFD; |
100 | |
184 | |
101 | static ANFD *anfds; |
185 | static ANFD *anfds; |
102 | static int anfdmax; |
186 | static int anfdmax; |
103 | |
187 | |
104 | static int *fdchanges; |
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105 | static int fdchangemax, fdchangecnt; |
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106 | |
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107 | static void |
188 | static void |
108 | anfds_init (ANFD *base, int count) |
189 | anfds_init (ANFD *base, int count) |
109 | { |
190 | { |
110 | while (count--) |
191 | while (count--) |
111 | { |
192 | { |
112 | base->head = 0; |
193 | base->head = 0; |
113 | base->wev = base->rev = EV_NONE; |
194 | base->events = EV_NONE; |
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195 | base->reify = 0; |
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196 | |
114 | ++base; |
197 | ++base; |
115 | } |
198 | } |
116 | } |
199 | } |
117 | |
200 | |
118 | typedef struct |
201 | typedef struct |
119 | { |
202 | { |
120 | W w; |
203 | W w; |
121 | int events; |
204 | int events; |
122 | } ANPENDING; |
205 | } ANPENDING; |
123 | |
206 | |
124 | static ANPENDING *pendings; |
207 | static ANPENDING *pendings [NUMPRI]; |
125 | static int pendingmax, pendingcnt; |
208 | static int pendingmax [NUMPRI], pendingcnt [NUMPRI]; |
126 | |
209 | |
127 | static void |
210 | static void |
128 | event (W w, int events) |
211 | event (W w, int events) |
129 | { |
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 | |
130 | w->pending = ++pendingcnt; |
219 | w->pending = ++pendingcnt [ABSPRI (w)]; |
131 | array_needsize (pendings, pendingmax, pendingcnt, ); |
220 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
132 | pendings [pendingcnt - 1].w = w; |
221 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
133 | 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); |
134 | } |
232 | } |
135 | |
233 | |
136 | static void |
234 | static void |
137 | fd_event (int fd, int events) |
235 | fd_event (int fd, int events) |
138 | { |
236 | { |
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146 | if (ev) |
244 | if (ev) |
147 | event ((W)w, ev); |
245 | event ((W)w, ev); |
148 | } |
246 | } |
149 | } |
247 | } |
150 | |
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 | |
151 | static void |
254 | static void |
152 | queue_events (W *events, int eventcnt, int type) |
255 | fd_reify (void) |
153 | { |
256 | { |
154 | int i; |
257 | int i; |
155 | |
258 | |
156 | for (i = 0; i < eventcnt; ++i) |
259 | for (i = 0; i < fdchangecnt; ++i) |
157 | event (events [i], type); |
260 | { |
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261 | int fd = fdchanges [i]; |
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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 | { |
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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 | } |
158 | } |
333 | } |
159 | |
334 | |
160 | /*****************************************************************************/ |
335 | /*****************************************************************************/ |
161 | |
336 | |
162 | static struct ev_timer **timers; |
337 | static struct ev_timer **timers; |
… | |
… | |
209 | /*****************************************************************************/ |
384 | /*****************************************************************************/ |
210 | |
385 | |
211 | typedef struct |
386 | typedef struct |
212 | { |
387 | { |
213 | struct ev_signal *head; |
388 | struct ev_signal *head; |
214 | sig_atomic_t gotsig; |
389 | sig_atomic_t volatile gotsig; |
215 | } ANSIG; |
390 | } ANSIG; |
216 | |
391 | |
217 | static ANSIG *signals; |
392 | static ANSIG *signals; |
218 | static int signalmax; |
393 | static int signalmax; |
219 | |
394 | |
220 | static int sigpipe [2]; |
395 | static int sigpipe [2]; |
221 | static sig_atomic_t gotsig; |
396 | static sig_atomic_t volatile gotsig; |
222 | static struct ev_io sigev; |
397 | static struct ev_io sigev; |
223 | |
398 | |
224 | static void |
399 | static void |
225 | signals_init (ANSIG *base, int count) |
400 | signals_init (ANSIG *base, int count) |
226 | { |
401 | { |
227 | while (count--) |
402 | while (count--) |
228 | { |
403 | { |
229 | base->head = 0; |
404 | base->head = 0; |
230 | base->gotsig = 0; |
405 | base->gotsig = 0; |
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406 | |
231 | ++base; |
407 | ++base; |
232 | } |
408 | } |
233 | } |
409 | } |
234 | |
410 | |
235 | static void |
411 | static void |
… | |
… | |
237 | { |
413 | { |
238 | signals [signum - 1].gotsig = 1; |
414 | signals [signum - 1].gotsig = 1; |
239 | |
415 | |
240 | if (!gotsig) |
416 | if (!gotsig) |
241 | { |
417 | { |
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418 | int old_errno = errno; |
242 | gotsig = 1; |
419 | gotsig = 1; |
243 | write (sigpipe [1], &gotsig, 1); |
420 | write (sigpipe [1], &signum, 1); |
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421 | errno = old_errno; |
244 | } |
422 | } |
245 | } |
423 | } |
246 | |
424 | |
247 | static void |
425 | static void |
248 | sigcb (struct ev_io *iow, int revents) |
426 | sigcb (struct ev_io *iow, int revents) |
249 | { |
427 | { |
250 | struct ev_signal *w; |
428 | struct ev_signal *w; |
251 | int sig; |
429 | int signum; |
252 | |
430 | |
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431 | read (sigpipe [0], &revents, 1); |
253 | gotsig = 0; |
432 | gotsig = 0; |
254 | read (sigpipe [0], &revents, 1); |
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255 | |
433 | |
256 | for (sig = signalmax; sig--; ) |
434 | for (signum = signalmax; signum--; ) |
257 | if (signals [sig].gotsig) |
435 | if (signals [signum].gotsig) |
258 | { |
436 | { |
259 | signals [sig].gotsig = 0; |
437 | signals [signum].gotsig = 0; |
260 | |
438 | |
261 | for (w = signals [sig].head; w; w = w->next) |
439 | for (w = signals [signum].head; w; w = w->next) |
262 | event ((W)w, EV_SIGNAL); |
440 | event ((W)w, EV_SIGNAL); |
263 | } |
441 | } |
264 | } |
442 | } |
265 | |
443 | |
266 | static void |
444 | static void |
267 | siginit (void) |
445 | siginit (void) |
268 | { |
446 | { |
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447 | #ifndef WIN32 |
269 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
448 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
270 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
449 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
271 | |
450 | |
272 | /* rather than sort out wether we really need nb, set it */ |
451 | /* rather than sort out wether we really need nb, set it */ |
273 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
452 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
274 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
453 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
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454 | #endif |
275 | |
455 | |
276 | evio_set (&sigev, sigpipe [0], EV_READ); |
456 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
277 | evio_start (&sigev); |
457 | ev_io_start (&sigev); |
278 | } |
458 | } |
279 | |
459 | |
280 | /*****************************************************************************/ |
460 | /*****************************************************************************/ |
281 | |
461 | |
282 | static struct ev_idle **idles; |
462 | static struct ev_idle **idles; |
283 | static int idlemax, idlecnt; |
463 | static int idlemax, idlecnt; |
284 | |
464 | |
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465 | static struct ev_prepare **prepares; |
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466 | static int preparemax, preparecnt; |
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467 | |
285 | static struct ev_check **checks; |
468 | static struct ev_check **checks; |
286 | static int checkmax, checkcnt; |
469 | static int checkmax, checkcnt; |
287 | |
470 | |
288 | /*****************************************************************************/ |
471 | /*****************************************************************************/ |
289 | |
472 | |
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473 | static struct ev_child *childs [PID_HASHSIZE]; |
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|
474 | static struct ev_signal childev; |
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475 | |
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|
476 | #ifndef WIN32 |
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477 | |
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478 | #ifndef WCONTINUED |
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479 | # define WCONTINUED 0 |
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480 | #endif |
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481 | |
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482 | static void |
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483 | child_reap (struct ev_signal *sw, int chain, int pid, int status) |
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484 | { |
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485 | struct ev_child *w; |
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486 | |
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487 | for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next) |
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488 | if (w->pid == pid || !w->pid) |
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489 | { |
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490 | w->priority = sw->priority; /* need to do it *now* */ |
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491 | w->rpid = pid; |
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492 | w->rstatus = status; |
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493 | printf ("rpid %p %d %d\n", w, pid, w->pid);//D |
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494 | event ((W)w, EV_CHILD); |
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495 | } |
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496 | } |
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497 | |
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498 | static void |
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499 | childcb (struct ev_signal *sw, int revents) |
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500 | { |
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501 | int pid, status; |
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502 | |
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503 | printf ("chld %x\n", revents);//D |
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504 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
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505 | { |
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506 | /* make sure we are called again until all childs have been reaped */ |
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507 | event ((W)sw, EV_SIGNAL); |
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508 | |
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509 | child_reap (sw, pid, pid, status); |
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510 | child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
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511 | } |
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512 | } |
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513 | |
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514 | #endif |
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515 | |
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516 | /*****************************************************************************/ |
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517 | |
|
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518 | #if EV_USE_KQUEUE |
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519 | # include "ev_kqueue.c" |
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520 | #endif |
290 | #if HAVE_EPOLL |
521 | #if EV_USE_EPOLL |
291 | # include "ev_epoll.c" |
522 | # include "ev_epoll.c" |
292 | #endif |
523 | #endif |
|
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524 | #if EV_USE_POLL |
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525 | # include "ev_poll.c" |
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526 | #endif |
293 | #if HAVE_SELECT |
527 | #if EV_USE_SELECT |
294 | # include "ev_select.c" |
528 | # include "ev_select.c" |
295 | #endif |
529 | #endif |
296 | |
530 | |
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531 | int |
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532 | ev_version_major (void) |
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533 | { |
|
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534 | return EV_VERSION_MAJOR; |
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535 | } |
|
|
536 | |
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537 | int |
|
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538 | ev_version_minor (void) |
|
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539 | { |
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540 | return EV_VERSION_MINOR; |
|
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541 | } |
|
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542 | |
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543 | /* return true if we are running with elevated privileges and ignore env variables */ |
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544 | static int |
|
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545 | enable_secure () |
|
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546 | { |
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547 | return getuid () != geteuid () |
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548 | || getgid () != getegid (); |
|
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549 | } |
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550 | |
297 | int ev_init (int flags) |
551 | int ev_init (int methods) |
298 | { |
552 | { |
299 | #if HAVE_MONOTONIC |
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300 | { |
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301 | struct timespec ts; |
|
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302 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
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303 | have_monotonic = 1; |
|
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304 | } |
|
|
305 | #endif |
|
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306 | |
|
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307 | ev_now = ev_time (); |
|
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308 | now = get_clock (); |
|
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309 | diff = ev_now - now; |
|
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310 | |
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311 | if (pipe (sigpipe)) |
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312 | return 0; |
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313 | |
|
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314 | ev_method = EVMETHOD_NONE; |
|
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315 | #if HAVE_EPOLL |
|
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316 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
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317 | #endif |
|
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318 | #if HAVE_SELECT |
|
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319 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
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320 | #endif |
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321 | |
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322 | if (ev_method) |
553 | if (!ev_method) |
|
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554 | { |
|
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555 | #if EV_USE_MONOTONIC |
323 | { |
556 | { |
|
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557 | struct timespec ts; |
|
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558 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
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559 | have_monotonic = 1; |
|
|
560 | } |
|
|
561 | #endif |
|
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562 | |
|
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563 | ev_now = ev_time (); |
|
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564 | now = get_clock (); |
|
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565 | now_floor = now; |
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566 | diff = ev_now - now; |
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567 | |
|
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568 | if (pipe (sigpipe)) |
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569 | return 0; |
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570 | |
|
|
571 | if (methods == EVMETHOD_AUTO) |
|
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572 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
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573 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
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574 | else |
|
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575 | methods = EVMETHOD_ANY; |
|
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576 | |
|
|
577 | ev_method = 0; |
|
|
578 | #if EV_USE_KQUEUE |
|
|
579 | if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods); |
|
|
580 | #endif |
|
|
581 | #if EV_USE_EPOLL |
|
|
582 | if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods); |
|
|
583 | #endif |
|
|
584 | #if EV_USE_POLL |
|
|
585 | if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods); |
|
|
586 | #endif |
|
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587 | #if EV_USE_SELECT |
|
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588 | if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods); |
|
|
589 | #endif |
|
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590 | |
|
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591 | if (ev_method) |
|
|
592 | { |
324 | evw_init (&sigev, sigcb); |
593 | ev_watcher_init (&sigev, sigcb); |
|
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594 | ev_set_priority (&sigev, EV_MAXPRI); |
325 | siginit (); |
595 | siginit (); |
|
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596 | |
|
|
597 | #ifndef WIN32 |
|
|
598 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
599 | ev_set_priority (&childev, EV_MAXPRI); |
|
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600 | ev_signal_start (&childev); |
|
|
601 | #endif |
|
|
602 | } |
326 | } |
603 | } |
327 | |
604 | |
328 | return ev_method; |
605 | return ev_method; |
329 | } |
606 | } |
330 | |
607 | |
331 | /*****************************************************************************/ |
608 | /*****************************************************************************/ |
332 | |
609 | |
333 | void ev_prefork (void) |
610 | void |
|
|
611 | ev_fork_prepare (void) |
334 | { |
612 | { |
335 | /* nop */ |
613 | /* nop */ |
336 | } |
614 | } |
337 | |
615 | |
|
|
616 | void |
338 | void ev_postfork_parent (void) |
617 | ev_fork_parent (void) |
339 | { |
618 | { |
340 | /* nop */ |
619 | /* nop */ |
341 | } |
620 | } |
342 | |
621 | |
|
|
622 | void |
343 | void ev_postfork_child (void) |
623 | ev_fork_child (void) |
344 | { |
624 | { |
345 | #if HAVE_EPOLL |
625 | #if EV_USE_EPOLL |
346 | if (ev_method == EVMETHOD_EPOLL) |
626 | if (ev_method == EVMETHOD_EPOLL) |
347 | epoll_postfork_child (); |
627 | epoll_postfork_child (); |
348 | #endif |
628 | #endif |
349 | |
629 | |
350 | evio_stop (&sigev); |
630 | ev_io_stop (&sigev); |
351 | close (sigpipe [0]); |
631 | close (sigpipe [0]); |
352 | close (sigpipe [1]); |
632 | close (sigpipe [1]); |
353 | pipe (sigpipe); |
633 | pipe (sigpipe); |
354 | siginit (); |
634 | siginit (); |
355 | } |
635 | } |
356 | |
636 | |
357 | /*****************************************************************************/ |
637 | /*****************************************************************************/ |
358 | |
638 | |
359 | static void |
639 | static void |
360 | fd_reify (void) |
640 | call_pending (void) |
361 | { |
641 | { |
362 | int i; |
642 | int pri; |
363 | |
643 | |
364 | for (i = 0; i < fdchangecnt; ++i) |
644 | for (pri = NUMPRI; pri--; ) |
365 | { |
645 | while (pendingcnt [pri]) |
366 | int fd = fdchanges [i]; |
|
|
367 | ANFD *anfd = anfds + fd; |
|
|
368 | struct ev_io *w; |
|
|
369 | |
|
|
370 | int wev = 0; |
|
|
371 | |
|
|
372 | for (w = anfd->head; w; w = w->next) |
|
|
373 | wev |= w->events; |
|
|
374 | |
|
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375 | if (anfd->wev != wev) |
|
|
376 | { |
646 | { |
377 | method_modify (fd, anfd->wev, wev); |
647 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
378 | anfd->wev = wev; |
|
|
379 | } |
|
|
380 | } |
|
|
381 | |
648 | |
382 | fdchangecnt = 0; |
|
|
383 | } |
|
|
384 | |
|
|
385 | static void |
|
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386 | call_pending () |
|
|
387 | { |
|
|
388 | int i; |
|
|
389 | |
|
|
390 | for (i = 0; i < pendingcnt; ++i) |
|
|
391 | { |
|
|
392 | ANPENDING *p = pendings + i; |
|
|
393 | |
|
|
394 | if (p->w) |
649 | if (p->w) |
395 | { |
650 | { |
396 | p->w->pending = 0; |
651 | p->w->pending = 0; |
397 | p->w->cb (p->w, p->events); |
652 | p->w->cb (p->w, p->events); |
398 | } |
653 | } |
399 | } |
654 | } |
400 | |
|
|
401 | pendingcnt = 0; |
|
|
402 | } |
655 | } |
403 | |
656 | |
404 | static void |
657 | static void |
405 | timers_reify () |
658 | timers_reify (void) |
406 | { |
659 | { |
407 | while (timercnt && timers [0]->at <= now) |
660 | while (timercnt && timers [0]->at <= now) |
408 | { |
661 | { |
409 | struct ev_timer *w = timers [0]; |
662 | struct ev_timer *w = timers [0]; |
410 | |
663 | |
411 | /* first reschedule or stop timer */ |
664 | /* first reschedule or stop timer */ |
412 | if (w->repeat) |
665 | if (w->repeat) |
413 | { |
666 | { |
|
|
667 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
414 | w->at = now + w->repeat; |
668 | w->at = now + w->repeat; |
415 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
|
|
416 | downheap ((WT *)timers, timercnt, 0); |
669 | downheap ((WT *)timers, timercnt, 0); |
417 | } |
670 | } |
418 | else |
671 | else |
419 | evtimer_stop (w); /* nonrepeating: stop timer */ |
672 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
420 | |
673 | |
421 | event ((W)w, EV_TIMEOUT); |
674 | event ((W)w, EV_TIMEOUT); |
422 | } |
675 | } |
423 | } |
676 | } |
424 | |
677 | |
425 | static void |
678 | static void |
426 | periodics_reify () |
679 | periodics_reify (void) |
427 | { |
680 | { |
428 | while (periodiccnt && periodics [0]->at <= ev_now) |
681 | while (periodiccnt && periodics [0]->at <= ev_now) |
429 | { |
682 | { |
430 | struct ev_periodic *w = periodics [0]; |
683 | struct ev_periodic *w = periodics [0]; |
431 | |
684 | |
432 | /* first reschedule or stop timer */ |
685 | /* first reschedule or stop timer */ |
433 | if (w->interval) |
686 | if (w->interval) |
434 | { |
687 | { |
435 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
688 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
436 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
689 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
437 | downheap ((WT *)periodics, periodiccnt, 0); |
690 | downheap ((WT *)periodics, periodiccnt, 0); |
438 | } |
691 | } |
439 | else |
692 | else |
440 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
693 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
441 | |
694 | |
442 | event ((W)w, EV_TIMEOUT); |
695 | event ((W)w, EV_PERIODIC); |
443 | } |
696 | } |
444 | } |
697 | } |
445 | |
698 | |
446 | static void |
699 | static void |
447 | periodics_reschedule (ev_tstamp diff) |
700 | periodics_reschedule (ev_tstamp diff) |
… | |
… | |
457 | { |
710 | { |
458 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
711 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
459 | |
712 | |
460 | if (fabs (diff) >= 1e-4) |
713 | if (fabs (diff) >= 1e-4) |
461 | { |
714 | { |
462 | evperiodic_stop (w); |
715 | ev_periodic_stop (w); |
463 | evperiodic_start (w); |
716 | ev_periodic_start (w); |
464 | |
717 | |
465 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
718 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
466 | } |
719 | } |
467 | } |
720 | } |
468 | } |
721 | } |
469 | } |
722 | } |
470 | |
723 | |
471 | static void |
724 | static int |
|
|
725 | time_update_monotonic (void) |
|
|
726 | { |
|
|
727 | now = get_clock (); |
|
|
728 | |
|
|
729 | if (expect_true (now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
730 | { |
|
|
731 | ev_now = now + diff; |
|
|
732 | return 0; |
|
|
733 | } |
|
|
734 | else |
|
|
735 | { |
|
|
736 | now_floor = now; |
|
|
737 | ev_now = ev_time (); |
|
|
738 | return 1; |
|
|
739 | } |
|
|
740 | } |
|
|
741 | |
|
|
742 | static void |
472 | time_update () |
743 | time_update (void) |
473 | { |
744 | { |
474 | int i; |
745 | int i; |
475 | |
746 | |
476 | ev_now = ev_time (); |
747 | #if EV_USE_MONOTONIC |
477 | |
|
|
478 | if (have_monotonic) |
748 | if (expect_true (have_monotonic)) |
479 | { |
749 | { |
480 | ev_tstamp odiff = diff; |
750 | if (time_update_monotonic ()) |
481 | |
|
|
482 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
483 | { |
751 | { |
484 | now = get_clock (); |
752 | ev_tstamp odiff = diff; |
|
|
753 | |
|
|
754 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
755 | { |
485 | diff = ev_now - now; |
756 | diff = ev_now - now; |
486 | |
757 | |
487 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
758 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
488 | return; /* all is well */ |
759 | return; /* all is well */ |
489 | |
760 | |
490 | ev_now = ev_time (); |
761 | ev_now = ev_time (); |
|
|
762 | now = get_clock (); |
|
|
763 | now_floor = now; |
|
|
764 | } |
|
|
765 | |
|
|
766 | periodics_reschedule (diff - odiff); |
|
|
767 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
491 | } |
768 | } |
492 | |
|
|
493 | periodics_reschedule (diff - odiff); |
|
|
494 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
495 | } |
769 | } |
496 | else |
770 | else |
|
|
771 | #endif |
497 | { |
772 | { |
|
|
773 | ev_now = ev_time (); |
|
|
774 | |
498 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
775 | if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
499 | { |
776 | { |
500 | periodics_reschedule (ev_now - now); |
777 | periodics_reschedule (ev_now - now); |
501 | |
778 | |
502 | /* adjust timers. this is easy, as the offset is the same for all */ |
779 | /* adjust timers. this is easy, as the offset is the same for all */ |
503 | for (i = 0; i < timercnt; ++i) |
780 | for (i = 0; i < timercnt; ++i) |
… | |
… | |
511 | int ev_loop_done; |
788 | int ev_loop_done; |
512 | |
789 | |
513 | void ev_loop (int flags) |
790 | void ev_loop (int flags) |
514 | { |
791 | { |
515 | double block; |
792 | double block; |
516 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
793 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
517 | |
|
|
518 | if (checkcnt) |
|
|
519 | { |
|
|
520 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
521 | call_pending (); |
|
|
522 | } |
|
|
523 | |
794 | |
524 | do |
795 | do |
525 | { |
796 | { |
|
|
797 | /* queue check watchers (and execute them) */ |
|
|
798 | if (expect_false (preparecnt)) |
|
|
799 | { |
|
|
800 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
|
|
801 | call_pending (); |
|
|
802 | } |
|
|
803 | |
526 | /* update fd-related kernel structures */ |
804 | /* update fd-related kernel structures */ |
527 | fd_reify (); |
805 | fd_reify (); |
528 | |
806 | |
529 | /* calculate blocking time */ |
807 | /* calculate blocking time */ |
530 | |
808 | |
531 | /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
809 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
810 | always have timers, we just calculate it always */ |
|
|
811 | #if EV_USE_MONOTONIC |
|
|
812 | if (expect_true (have_monotonic)) |
|
|
813 | time_update_monotonic (); |
|
|
814 | else |
|
|
815 | #endif |
|
|
816 | { |
532 | ev_now = ev_time (); |
817 | ev_now = ev_time (); |
|
|
818 | now = ev_now; |
|
|
819 | } |
533 | |
820 | |
534 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
821 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
535 | block = 0.; |
822 | block = 0.; |
536 | else |
823 | else |
537 | { |
824 | { |
538 | block = MAX_BLOCKTIME; |
825 | block = MAX_BLOCKTIME; |
539 | |
826 | |
540 | if (timercnt) |
827 | if (timercnt) |
541 | { |
828 | { |
542 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
829 | ev_tstamp to = timers [0]->at - now + method_fudge; |
543 | if (block > to) block = to; |
830 | if (block > to) block = to; |
544 | } |
831 | } |
545 | |
832 | |
546 | if (periodiccnt) |
833 | if (periodiccnt) |
547 | { |
834 | { |
… | |
… | |
556 | |
843 | |
557 | /* update ev_now, do magic */ |
844 | /* update ev_now, do magic */ |
558 | time_update (); |
845 | time_update (); |
559 | |
846 | |
560 | /* queue pending timers and reschedule them */ |
847 | /* queue pending timers and reschedule them */ |
|
|
848 | timers_reify (); /* relative timers called last */ |
561 | periodics_reify (); /* absolute timers first */ |
849 | periodics_reify (); /* absolute timers called first */ |
562 | timers_reify (); /* relative timers second */ |
|
|
563 | |
850 | |
564 | /* queue idle watchers unless io or timers are pending */ |
851 | /* queue idle watchers unless io or timers are pending */ |
565 | if (!pendingcnt) |
852 | if (!pendingcnt) |
566 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
853 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
567 | |
854 | |
568 | /* queue check and possibly idle watchers */ |
855 | /* queue check watchers, to be executed first */ |
|
|
856 | if (checkcnt) |
569 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
857 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
570 | |
858 | |
571 | call_pending (); |
859 | call_pending (); |
572 | } |
860 | } |
573 | while (!ev_loop_done); |
861 | while (!ev_loop_done); |
574 | |
862 | |
… | |
… | |
599 | head = &(*head)->next; |
887 | head = &(*head)->next; |
600 | } |
888 | } |
601 | } |
889 | } |
602 | |
890 | |
603 | static void |
891 | static void |
|
|
892 | ev_clear_pending (W w) |
|
|
893 | { |
|
|
894 | if (w->pending) |
|
|
895 | { |
|
|
896 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
|
|
897 | w->pending = 0; |
|
|
898 | } |
|
|
899 | } |
|
|
900 | |
|
|
901 | static void |
604 | ev_start (W w, int active) |
902 | ev_start (W w, int active) |
605 | { |
903 | { |
606 | w->pending = 0; |
904 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
905 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
906 | |
607 | w->active = active; |
907 | w->active = active; |
608 | } |
908 | } |
609 | |
909 | |
610 | static void |
910 | static void |
611 | ev_stop (W w) |
911 | ev_stop (W w) |
612 | { |
912 | { |
613 | if (w->pending) |
|
|
614 | pendings [w->pending - 1].w = 0; |
|
|
615 | |
|
|
616 | w->active = 0; |
913 | w->active = 0; |
617 | } |
914 | } |
618 | |
915 | |
619 | /*****************************************************************************/ |
916 | /*****************************************************************************/ |
620 | |
917 | |
621 | void |
918 | void |
622 | evio_start (struct ev_io *w) |
919 | ev_io_start (struct ev_io *w) |
623 | { |
920 | { |
|
|
921 | int fd = w->fd; |
|
|
922 | |
624 | if (ev_is_active (w)) |
923 | if (ev_is_active (w)) |
625 | return; |
924 | return; |
626 | |
925 | |
627 | int fd = w->fd; |
926 | assert (("ev_io_start called with negative fd", fd >= 0)); |
628 | |
927 | |
629 | ev_start ((W)w, 1); |
928 | ev_start ((W)w, 1); |
630 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
929 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
631 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
930 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
632 | |
931 | |
633 | ++fdchangecnt; |
932 | fd_change (fd); |
634 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
635 | fdchanges [fdchangecnt - 1] = fd; |
|
|
636 | } |
933 | } |
637 | |
934 | |
638 | void |
935 | void |
639 | evio_stop (struct ev_io *w) |
936 | ev_io_stop (struct ev_io *w) |
640 | { |
937 | { |
|
|
938 | ev_clear_pending ((W)w); |
641 | if (!ev_is_active (w)) |
939 | if (!ev_is_active (w)) |
642 | return; |
940 | return; |
643 | |
941 | |
644 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
942 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
645 | ev_stop ((W)w); |
943 | ev_stop ((W)w); |
646 | |
944 | |
647 | ++fdchangecnt; |
945 | fd_change (w->fd); |
648 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
649 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
650 | } |
946 | } |
651 | |
947 | |
652 | |
|
|
653 | void |
948 | void |
654 | evtimer_start (struct ev_timer *w) |
949 | ev_timer_start (struct ev_timer *w) |
655 | { |
950 | { |
656 | if (ev_is_active (w)) |
951 | if (ev_is_active (w)) |
657 | return; |
952 | return; |
658 | |
953 | |
659 | w->at += now; |
954 | w->at += now; |
660 | |
955 | |
661 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
956 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
662 | |
957 | |
663 | ev_start ((W)w, ++timercnt); |
958 | ev_start ((W)w, ++timercnt); |
664 | array_needsize (timers, timermax, timercnt, ); |
959 | array_needsize (timers, timermax, timercnt, ); |
665 | timers [timercnt - 1] = w; |
960 | timers [timercnt - 1] = w; |
666 | upheap ((WT *)timers, timercnt - 1); |
961 | upheap ((WT *)timers, timercnt - 1); |
667 | } |
962 | } |
668 | |
963 | |
669 | void |
964 | void |
670 | evtimer_stop (struct ev_timer *w) |
965 | ev_timer_stop (struct ev_timer *w) |
671 | { |
966 | { |
|
|
967 | ev_clear_pending ((W)w); |
672 | if (!ev_is_active (w)) |
968 | if (!ev_is_active (w)) |
673 | return; |
969 | return; |
674 | |
970 | |
675 | if (w->active < timercnt--) |
971 | if (w->active < timercnt--) |
676 | { |
972 | { |
… | |
… | |
682 | |
978 | |
683 | ev_stop ((W)w); |
979 | ev_stop ((W)w); |
684 | } |
980 | } |
685 | |
981 | |
686 | void |
982 | void |
687 | evtimer_again (struct ev_timer *w) |
983 | ev_timer_again (struct ev_timer *w) |
688 | { |
984 | { |
689 | if (ev_is_active (w)) |
985 | if (ev_is_active (w)) |
690 | { |
986 | { |
691 | if (w->repeat) |
987 | if (w->repeat) |
692 | { |
988 | { |
693 | w->at = now + w->repeat; |
989 | w->at = now + w->repeat; |
694 | downheap ((WT *)timers, timercnt, w->active - 1); |
990 | downheap ((WT *)timers, timercnt, w->active - 1); |
695 | } |
991 | } |
696 | else |
992 | else |
697 | evtimer_stop (w); |
993 | ev_timer_stop (w); |
698 | } |
994 | } |
699 | else if (w->repeat) |
995 | else if (w->repeat) |
700 | evtimer_start (w); |
996 | ev_timer_start (w); |
701 | } |
997 | } |
702 | |
998 | |
703 | void |
999 | void |
704 | evperiodic_start (struct ev_periodic *w) |
1000 | ev_periodic_start (struct ev_periodic *w) |
705 | { |
1001 | { |
706 | if (ev_is_active (w)) |
1002 | if (ev_is_active (w)) |
707 | return; |
1003 | return; |
708 | |
1004 | |
709 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1005 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
710 | |
1006 | |
711 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1007 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
712 | if (w->interval) |
1008 | if (w->interval) |
713 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1009 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
714 | |
1010 | |
… | |
… | |
717 | periodics [periodiccnt - 1] = w; |
1013 | periodics [periodiccnt - 1] = w; |
718 | upheap ((WT *)periodics, periodiccnt - 1); |
1014 | upheap ((WT *)periodics, periodiccnt - 1); |
719 | } |
1015 | } |
720 | |
1016 | |
721 | void |
1017 | void |
722 | evperiodic_stop (struct ev_periodic *w) |
1018 | ev_periodic_stop (struct ev_periodic *w) |
723 | { |
1019 | { |
|
|
1020 | ev_clear_pending ((W)w); |
724 | if (!ev_is_active (w)) |
1021 | if (!ev_is_active (w)) |
725 | return; |
1022 | return; |
726 | |
1023 | |
727 | if (w->active < periodiccnt--) |
1024 | if (w->active < periodiccnt--) |
728 | { |
1025 | { |
… | |
… | |
731 | } |
1028 | } |
732 | |
1029 | |
733 | ev_stop ((W)w); |
1030 | ev_stop ((W)w); |
734 | } |
1031 | } |
735 | |
1032 | |
|
|
1033 | #ifndef SA_RESTART |
|
|
1034 | # define SA_RESTART 0 |
|
|
1035 | #endif |
|
|
1036 | |
736 | void |
1037 | void |
737 | evsignal_start (struct ev_signal *w) |
1038 | ev_signal_start (struct ev_signal *w) |
738 | { |
1039 | { |
739 | if (ev_is_active (w)) |
1040 | if (ev_is_active (w)) |
740 | return; |
1041 | return; |
|
|
1042 | |
|
|
1043 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
741 | |
1044 | |
742 | ev_start ((W)w, 1); |
1045 | ev_start ((W)w, 1); |
743 | array_needsize (signals, signalmax, w->signum, signals_init); |
1046 | array_needsize (signals, signalmax, w->signum, signals_init); |
744 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1047 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
745 | |
1048 | |
746 | if (!w->next) |
1049 | if (!w->next) |
747 | { |
1050 | { |
748 | struct sigaction sa; |
1051 | struct sigaction sa; |
749 | sa.sa_handler = sighandler; |
1052 | sa.sa_handler = sighandler; |
750 | sigfillset (&sa.sa_mask); |
1053 | sigfillset (&sa.sa_mask); |
751 | sa.sa_flags = 0; |
1054 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
752 | sigaction (w->signum, &sa, 0); |
1055 | sigaction (w->signum, &sa, 0); |
753 | } |
1056 | } |
754 | } |
1057 | } |
755 | |
1058 | |
756 | void |
1059 | void |
757 | evsignal_stop (struct ev_signal *w) |
1060 | ev_signal_stop (struct ev_signal *w) |
758 | { |
1061 | { |
|
|
1062 | ev_clear_pending ((W)w); |
759 | if (!ev_is_active (w)) |
1063 | if (!ev_is_active (w)) |
760 | return; |
1064 | return; |
761 | |
1065 | |
762 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1066 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
763 | ev_stop ((W)w); |
1067 | ev_stop ((W)w); |
764 | |
1068 | |
765 | if (!signals [w->signum - 1].head) |
1069 | if (!signals [w->signum - 1].head) |
766 | signal (w->signum, SIG_DFL); |
1070 | signal (w->signum, SIG_DFL); |
767 | } |
1071 | } |
768 | |
1072 | |
|
|
1073 | void |
769 | void evidle_start (struct ev_idle *w) |
1074 | ev_idle_start (struct ev_idle *w) |
770 | { |
1075 | { |
771 | if (ev_is_active (w)) |
1076 | if (ev_is_active (w)) |
772 | return; |
1077 | return; |
773 | |
1078 | |
774 | ev_start ((W)w, ++idlecnt); |
1079 | ev_start ((W)w, ++idlecnt); |
775 | array_needsize (idles, idlemax, idlecnt, ); |
1080 | array_needsize (idles, idlemax, idlecnt, ); |
776 | idles [idlecnt - 1] = w; |
1081 | idles [idlecnt - 1] = w; |
777 | } |
1082 | } |
778 | |
1083 | |
|
|
1084 | void |
779 | void evidle_stop (struct ev_idle *w) |
1085 | ev_idle_stop (struct ev_idle *w) |
780 | { |
1086 | { |
|
|
1087 | ev_clear_pending ((W)w); |
|
|
1088 | if (ev_is_active (w)) |
|
|
1089 | return; |
|
|
1090 | |
781 | idles [w->active - 1] = idles [--idlecnt]; |
1091 | idles [w->active - 1] = idles [--idlecnt]; |
782 | ev_stop ((W)w); |
1092 | ev_stop ((W)w); |
783 | } |
1093 | } |
784 | |
1094 | |
|
|
1095 | void |
|
|
1096 | ev_prepare_start (struct ev_prepare *w) |
|
|
1097 | { |
|
|
1098 | if (ev_is_active (w)) |
|
|
1099 | return; |
|
|
1100 | |
|
|
1101 | ev_start ((W)w, ++preparecnt); |
|
|
1102 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1103 | prepares [preparecnt - 1] = w; |
|
|
1104 | } |
|
|
1105 | |
|
|
1106 | void |
|
|
1107 | ev_prepare_stop (struct ev_prepare *w) |
|
|
1108 | { |
|
|
1109 | ev_clear_pending ((W)w); |
|
|
1110 | if (ev_is_active (w)) |
|
|
1111 | return; |
|
|
1112 | |
|
|
1113 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
1114 | ev_stop ((W)w); |
|
|
1115 | } |
|
|
1116 | |
|
|
1117 | void |
785 | void evcheck_start (struct ev_check *w) |
1118 | ev_check_start (struct ev_check *w) |
786 | { |
1119 | { |
787 | if (ev_is_active (w)) |
1120 | if (ev_is_active (w)) |
788 | return; |
1121 | return; |
789 | |
1122 | |
790 | ev_start ((W)w, ++checkcnt); |
1123 | ev_start ((W)w, ++checkcnt); |
791 | array_needsize (checks, checkmax, checkcnt, ); |
1124 | array_needsize (checks, checkmax, checkcnt, ); |
792 | checks [checkcnt - 1] = w; |
1125 | checks [checkcnt - 1] = w; |
793 | } |
1126 | } |
794 | |
1127 | |
|
|
1128 | void |
795 | void evcheck_stop (struct ev_check *w) |
1129 | ev_check_stop (struct ev_check *w) |
796 | { |
1130 | { |
|
|
1131 | ev_clear_pending ((W)w); |
|
|
1132 | if (ev_is_active (w)) |
|
|
1133 | return; |
|
|
1134 | |
797 | checks [w->active - 1] = checks [--checkcnt]; |
1135 | checks [w->active - 1] = checks [--checkcnt]; |
798 | ev_stop ((W)w); |
1136 | ev_stop ((W)w); |
799 | } |
1137 | } |
800 | |
1138 | |
|
|
1139 | void |
|
|
1140 | ev_child_start (struct ev_child *w) |
|
|
1141 | { |
|
|
1142 | if (ev_is_active (w)) |
|
|
1143 | return; |
|
|
1144 | |
|
|
1145 | ev_start ((W)w, 1); |
|
|
1146 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1147 | } |
|
|
1148 | |
|
|
1149 | void |
|
|
1150 | ev_child_stop (struct ev_child *w) |
|
|
1151 | { |
|
|
1152 | ev_clear_pending ((W)w); |
|
|
1153 | if (ev_is_active (w)) |
|
|
1154 | return; |
|
|
1155 | |
|
|
1156 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1157 | ev_stop ((W)w); |
|
|
1158 | } |
|
|
1159 | |
801 | /*****************************************************************************/ |
1160 | /*****************************************************************************/ |
802 | |
1161 | |
|
|
1162 | struct ev_once |
|
|
1163 | { |
|
|
1164 | struct ev_io io; |
|
|
1165 | struct ev_timer to; |
|
|
1166 | void (*cb)(int revents, void *arg); |
|
|
1167 | void *arg; |
|
|
1168 | }; |
|
|
1169 | |
|
|
1170 | static void |
|
|
1171 | once_cb (struct ev_once *once, int revents) |
|
|
1172 | { |
|
|
1173 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
1174 | void *arg = once->arg; |
|
|
1175 | |
|
|
1176 | ev_io_stop (&once->io); |
|
|
1177 | ev_timer_stop (&once->to); |
|
|
1178 | free (once); |
|
|
1179 | |
|
|
1180 | cb (revents, arg); |
|
|
1181 | } |
|
|
1182 | |
|
|
1183 | static void |
|
|
1184 | once_cb_io (struct ev_io *w, int revents) |
|
|
1185 | { |
|
|
1186 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
|
|
1187 | } |
|
|
1188 | |
|
|
1189 | static void |
|
|
1190 | once_cb_to (struct ev_timer *w, int revents) |
|
|
1191 | { |
|
|
1192 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
|
|
1193 | } |
|
|
1194 | |
|
|
1195 | void |
|
|
1196 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
|
|
1197 | { |
|
|
1198 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
|
|
1199 | |
|
|
1200 | if (!once) |
|
|
1201 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
1202 | else |
|
|
1203 | { |
|
|
1204 | once->cb = cb; |
|
|
1205 | once->arg = arg; |
|
|
1206 | |
|
|
1207 | ev_watcher_init (&once->io, once_cb_io); |
|
|
1208 | if (fd >= 0) |
|
|
1209 | { |
|
|
1210 | ev_io_set (&once->io, fd, events); |
|
|
1211 | ev_io_start (&once->io); |
|
|
1212 | } |
|
|
1213 | |
|
|
1214 | ev_watcher_init (&once->to, once_cb_to); |
|
|
1215 | if (timeout >= 0.) |
|
|
1216 | { |
|
|
1217 | ev_timer_set (&once->to, timeout, 0.); |
|
|
1218 | ev_timer_start (&once->to); |
|
|
1219 | } |
|
|
1220 | } |
|
|
1221 | } |
|
|
1222 | |
|
|
1223 | /*****************************************************************************/ |
|
|
1224 | |
803 | #if 0 |
1225 | #if 0 |
804 | |
1226 | |
805 | struct ev_io wio; |
1227 | struct ev_io wio; |
806 | |
1228 | |
807 | static void |
1229 | static void |
… | |
… | |
812 | |
1234 | |
813 | static void |
1235 | static void |
814 | ocb (struct ev_timer *w, int revents) |
1236 | ocb (struct ev_timer *w, int revents) |
815 | { |
1237 | { |
816 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
1238 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
817 | evtimer_stop (w); |
1239 | ev_timer_stop (w); |
818 | evtimer_start (w); |
1240 | ev_timer_start (w); |
819 | } |
1241 | } |
820 | |
1242 | |
821 | static void |
1243 | static void |
822 | scb (struct ev_signal *w, int revents) |
1244 | scb (struct ev_signal *w, int revents) |
823 | { |
1245 | { |
824 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
1246 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
825 | evio_stop (&wio); |
1247 | ev_io_stop (&wio); |
826 | evio_start (&wio); |
1248 | ev_io_start (&wio); |
827 | } |
1249 | } |
828 | |
1250 | |
829 | static void |
1251 | static void |
830 | gcb (struct ev_signal *w, int revents) |
1252 | gcb (struct ev_signal *w, int revents) |
831 | { |
1253 | { |
… | |
… | |
835 | |
1257 | |
836 | int main (void) |
1258 | int main (void) |
837 | { |
1259 | { |
838 | ev_init (0); |
1260 | ev_init (0); |
839 | |
1261 | |
840 | evio_init (&wio, sin_cb, 0, EV_READ); |
1262 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
841 | evio_start (&wio); |
1263 | ev_io_start (&wio); |
842 | |
1264 | |
843 | struct ev_timer t[10000]; |
1265 | struct ev_timer t[10000]; |
844 | |
1266 | |
845 | #if 0 |
1267 | #if 0 |
846 | int i; |
1268 | int i; |
847 | for (i = 0; i < 10000; ++i) |
1269 | for (i = 0; i < 10000; ++i) |
848 | { |
1270 | { |
849 | struct ev_timer *w = t + i; |
1271 | struct ev_timer *w = t + i; |
850 | evw_init (w, ocb, i); |
1272 | ev_watcher_init (w, ocb, i); |
851 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
1273 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
852 | evtimer_start (w); |
1274 | ev_timer_start (w); |
853 | if (drand48 () < 0.5) |
1275 | if (drand48 () < 0.5) |
854 | evtimer_stop (w); |
1276 | ev_timer_stop (w); |
855 | } |
1277 | } |
856 | #endif |
1278 | #endif |
857 | |
1279 | |
858 | struct ev_timer t1; |
1280 | struct ev_timer t1; |
859 | evtimer_init (&t1, ocb, 5, 10); |
1281 | ev_timer_init (&t1, ocb, 5, 10); |
860 | evtimer_start (&t1); |
1282 | ev_timer_start (&t1); |
861 | |
1283 | |
862 | struct ev_signal sig; |
1284 | struct ev_signal sig; |
863 | evsignal_init (&sig, scb, SIGQUIT); |
1285 | ev_signal_init (&sig, scb, SIGQUIT); |
864 | evsignal_start (&sig); |
1286 | ev_signal_start (&sig); |
865 | |
1287 | |
866 | struct ev_check cw; |
1288 | struct ev_check cw; |
867 | evcheck_init (&cw, gcb); |
1289 | ev_check_init (&cw, gcb); |
868 | evcheck_start (&cw); |
1290 | ev_check_start (&cw); |
869 | |
1291 | |
870 | struct ev_idle iw; |
1292 | struct ev_idle iw; |
871 | evidle_init (&iw, gcb); |
1293 | ev_idle_init (&iw, gcb); |
872 | evidle_start (&iw); |
1294 | ev_idle_start (&iw); |
873 | |
1295 | |
874 | ev_loop (0); |
1296 | ev_loop (0); |
875 | |
1297 | |
876 | return 0; |
1298 | return 0; |
877 | } |
1299 | } |