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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 | #ifndef EV_STANDALONE |
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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> |
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37 | #include <unistd.h> |
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38 | #include <fcntl.h> |
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39 | #include <signal.h> |
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40 | #include <stddef.h> |
3 | |
41 | |
4 | #include <stdio.h> |
42 | #include <stdio.h> |
5 | |
43 | |
6 | #include <assert.h> |
44 | #include <assert.h> |
7 | #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 |
8 | #include <sys/time.h> |
50 | #include <sys/time.h> |
9 | #include <time.h> |
51 | #include <time.h> |
10 | |
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_USEV_POLL |
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64 | # define EV_USEV_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 | |
11 | #ifdef CLOCK_MONOTONIC |
81 | #ifndef CLOCK_MONOTONIC |
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82 | # undef EV_USE_MONOTONIC |
12 | # define HAVE_MONOTONIC 1 |
83 | # define EV_USE_MONOTONIC 0 |
13 | #endif |
84 | #endif |
14 | |
85 | |
15 | #define HAVE_EPOLL 1 |
86 | #ifndef CLOCK_REALTIME |
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87 | # undef EV_USE_REALTIME |
16 | #define HAVE_REALTIME 1 |
88 | # define EV_USE_REALTIME 0 |
17 | #define HAVE_SELECT 0 |
89 | #endif |
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90 | |
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91 | /**/ |
18 | |
92 | |
19 | #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) */ |
20 | #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 */ |
21 | |
97 | |
22 | #include "ev.h" |
98 | #include "ev.h" |
23 | |
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 | |
24 | struct ev_watcher { |
114 | typedef struct ev_watcher *W; |
25 | EV_WATCHER (ev_watcher); |
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26 | }; |
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27 | |
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28 | struct ev_watcher_list { |
115 | typedef struct ev_watcher_list *WL; |
29 | EV_WATCHER_LIST (ev_watcher_list); |
116 | typedef struct ev_watcher_time *WT; |
30 | }; |
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31 | |
117 | |
32 | static ev_tstamp now, diff; /* monotonic clock */ |
118 | static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */ |
33 | ev_tstamp ev_now; |
119 | static ev_tstamp rt_now; |
34 | int ev_method; |
120 | static int method; |
35 | |
121 | |
36 | static int have_monotonic; /* runtime */ |
122 | static int have_monotonic; /* runtime */ |
37 | |
123 | |
38 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
124 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
39 | static void (*method_reify)(void); |
125 | static void (*method_modify)(EV_P_ int fd, int oev, int nev); |
40 | static void (*method_poll)(ev_tstamp timeout); |
126 | static void (*method_poll)(EV_P_ ev_tstamp timeout); |
41 | |
127 | |
42 | ev_tstamp |
128 | static int activecnt; /* number of active events */ |
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129 | |
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130 | #if EV_USE_SELECT |
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131 | static unsigned char *vec_ri, *vec_ro, *vec_wi, *vec_wo; |
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132 | static int vec_max; |
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133 | #endif |
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134 | |
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135 | #if EV_USEV_POLL |
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136 | static struct pollfd *polls; |
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137 | static int pollmax, pollcnt; |
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138 | static int *pollidxs; /* maps fds into structure indices */ |
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139 | static int pollidxmax; |
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140 | #endif |
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141 | |
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142 | #if EV_USE_EPOLL |
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143 | static int epoll_fd = -1; |
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144 | |
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145 | static struct epoll_event *events; |
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146 | static int eventmax; |
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147 | #endif |
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148 | |
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149 | #if EV_USE_KQUEUE |
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150 | static int kqueue_fd; |
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151 | static struct kevent *kqueue_changes; |
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152 | static int kqueue_changemax, kqueue_changecnt; |
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153 | static struct kevent *kqueue_events; |
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154 | static int kqueue_eventmax; |
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155 | #endif |
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156 | |
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157 | /*****************************************************************************/ |
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158 | |
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159 | inline ev_tstamp |
43 | ev_time (void) |
160 | ev_time (void) |
44 | { |
161 | { |
45 | #if HAVE_REALTIME |
162 | #if EV_USE_REALTIME |
46 | struct timespec ts; |
163 | struct timespec ts; |
47 | clock_gettime (CLOCK_REALTIME, &ts); |
164 | clock_gettime (CLOCK_REALTIME, &ts); |
48 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
165 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
49 | #else |
166 | #else |
50 | struct timeval tv; |
167 | struct timeval tv; |
51 | gettimeofday (&tv, 0); |
168 | gettimeofday (&tv, 0); |
52 | return tv.tv_sec + tv.tv_usec * 1e-6; |
169 | return tv.tv_sec + tv.tv_usec * 1e-6; |
53 | #endif |
170 | #endif |
54 | } |
171 | } |
55 | |
172 | |
56 | static ev_tstamp |
173 | inline ev_tstamp |
57 | get_clock (void) |
174 | get_clock (void) |
58 | { |
175 | { |
59 | #if HAVE_MONOTONIC |
176 | #if EV_USE_MONOTONIC |
60 | if (have_monotonic) |
177 | if (expect_true (have_monotonic)) |
61 | { |
178 | { |
62 | struct timespec ts; |
179 | struct timespec ts; |
63 | clock_gettime (CLOCK_MONOTONIC, &ts); |
180 | clock_gettime (CLOCK_MONOTONIC, &ts); |
64 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
181 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
65 | } |
182 | } |
66 | #endif |
183 | #endif |
67 | |
184 | |
68 | return ev_time (); |
185 | return ev_time (); |
69 | } |
186 | } |
70 | |
187 | |
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188 | ev_tstamp |
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189 | ev_now (EV_P) |
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190 | { |
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191 | return rt_now; |
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192 | } |
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193 | |
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194 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
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195 | |
71 | #define array_needsize(base,cur,cnt,init) \ |
196 | #define array_needsize(base,cur,cnt,init) \ |
72 | if ((cnt) > cur) \ |
197 | if (expect_false ((cnt) > cur)) \ |
73 | { \ |
198 | { \ |
74 | int newcnt = cur ? cur << 1 : 16; \ |
199 | int newcnt = cur; \ |
75 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
200 | do \ |
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201 | { \ |
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202 | newcnt = array_roundsize (base, newcnt << 1); \ |
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203 | } \ |
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204 | while ((cnt) > newcnt); \ |
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205 | \ |
76 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
206 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
77 | init (base + cur, newcnt - cur); \ |
207 | init (base + cur, newcnt - cur); \ |
78 | cur = newcnt; \ |
208 | cur = newcnt; \ |
79 | } |
209 | } |
80 | |
210 | |
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211 | /*****************************************************************************/ |
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212 | |
81 | typedef struct |
213 | typedef struct |
82 | { |
214 | { |
83 | struct ev_io *head; |
215 | struct ev_watcher_list *head; |
84 | unsigned char wev, rev; /* want, received event set */ |
216 | unsigned char events; |
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217 | unsigned char reify; |
85 | } ANFD; |
218 | } ANFD; |
86 | |
219 | |
87 | static ANFD *anfds; |
220 | static ANFD *anfds; |
88 | static int anfdmax; |
221 | static int anfdmax; |
89 | |
222 | |
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223 | static void |
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224 | anfds_init (ANFD *base, int count) |
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225 | { |
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226 | while (count--) |
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227 | { |
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228 | base->head = 0; |
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229 | base->events = EV_NONE; |
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230 | base->reify = 0; |
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231 | |
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232 | ++base; |
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233 | } |
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234 | } |
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235 | |
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236 | typedef struct |
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237 | { |
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238 | W w; |
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239 | int events; |
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240 | } ANPENDING; |
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241 | |
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242 | static ANPENDING *pendings [NUMPRI]; |
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243 | static int pendingmax [NUMPRI], pendingcnt [NUMPRI]; |
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244 | |
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245 | static void |
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246 | event (EV_P_ W w, int events) |
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247 | { |
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248 | if (w->pending) |
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249 | { |
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250 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
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251 | return; |
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252 | } |
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253 | |
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254 | w->pending = ++pendingcnt [ABSPRI (w)]; |
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255 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
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256 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
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257 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
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258 | } |
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259 | |
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260 | static void |
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261 | queue_events (EV_P_ W *events, int eventcnt, int type) |
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262 | { |
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263 | int i; |
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264 | |
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265 | for (i = 0; i < eventcnt; ++i) |
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266 | event (EV_A_ events [i], type); |
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267 | } |
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268 | |
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269 | static void |
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270 | fd_event (EV_P_ int fd, int events) |
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271 | { |
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272 | ANFD *anfd = anfds + fd; |
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273 | struct ev_io *w; |
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274 | |
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275 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
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276 | { |
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277 | int ev = w->events & events; |
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278 | |
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279 | if (ev) |
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280 | event (EV_A_ (W)w, ev); |
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281 | } |
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282 | } |
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283 | |
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284 | /*****************************************************************************/ |
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285 | |
90 | static int *fdchanges; |
286 | static int *fdchanges; |
91 | static int fdchangemax, fdchangecnt; |
287 | static int fdchangemax, fdchangecnt; |
92 | |
288 | |
93 | static void |
289 | static void |
94 | anfds_init (ANFD *base, int count) |
290 | fd_reify (EV_P) |
95 | { |
291 | { |
96 | while (count--) |
292 | int i; |
97 | { |
293 | |
98 | base->head = 0; |
294 | for (i = 0; i < fdchangecnt; ++i) |
99 | base->wev = base->rev = EV_NONE; |
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100 | ++base; |
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101 | } |
295 | { |
102 | } |
296 | int fd = fdchanges [i]; |
103 | |
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104 | typedef struct |
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105 | { |
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106 | struct ev_watcher *w; |
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107 | int events; |
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108 | } ANPENDING; |
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109 | |
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110 | static ANPENDING *pendings; |
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111 | static int pendingmax, pendingcnt; |
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112 | |
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113 | static void |
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114 | event (struct ev_watcher *w, int events) |
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115 | { |
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116 | w->pending = ++pendingcnt; |
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117 | array_needsize (pendings, pendingmax, pendingcnt, ); |
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118 | pendings [pendingcnt - 1].w = w; |
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119 | pendings [pendingcnt - 1].events = events; |
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120 | } |
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121 | |
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122 | static void |
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123 | fd_event (int fd, int events) |
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124 | { |
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125 | ANFD *anfd = anfds + fd; |
297 | ANFD *anfd = anfds + fd; |
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298 | struct ev_io *w; |
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299 | |
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300 | int events = 0; |
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301 | |
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302 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
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303 | events |= w->events; |
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304 | |
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305 | anfd->reify = 0; |
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306 | |
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307 | if (anfd->events != events) |
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308 | { |
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309 | method_modify (EV_A_ fd, anfd->events, events); |
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310 | anfd->events = events; |
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311 | } |
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312 | } |
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313 | |
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314 | fdchangecnt = 0; |
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315 | } |
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316 | |
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317 | static void |
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318 | fd_change (EV_P_ int fd) |
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319 | { |
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320 | if (anfds [fd].reify || fdchangecnt < 0) |
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321 | return; |
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322 | |
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323 | anfds [fd].reify = 1; |
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324 | |
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325 | ++fdchangecnt; |
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326 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
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327 | fdchanges [fdchangecnt - 1] = fd; |
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328 | } |
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329 | |
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330 | static void |
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331 | fd_kill (EV_P_ int fd) |
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332 | { |
126 | struct ev_io *w; |
333 | struct ev_io *w; |
127 | |
334 | |
128 | for (w = anfd->head; w; w = w->next) |
335 | while ((w = (struct ev_io *)anfds [fd].head)) |
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336 | { |
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337 | ev_io_stop (EV_A_ w); |
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338 | event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
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339 | } |
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340 | } |
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341 | |
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342 | /* called on EBADF to verify fds */ |
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343 | static void |
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344 | fd_ebadf (EV_P) |
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345 | { |
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346 | int fd; |
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347 | |
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348 | for (fd = 0; fd < anfdmax; ++fd) |
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349 | if (anfds [fd].events) |
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350 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
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351 | fd_kill (EV_A_ fd); |
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352 | } |
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353 | |
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354 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
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355 | static void |
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356 | fd_enomem (EV_P) |
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357 | { |
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358 | int fd = anfdmax; |
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359 | |
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360 | while (fd--) |
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361 | if (anfds [fd].events) |
129 | { |
362 | { |
130 | int ev = w->events & events; |
363 | close (fd); |
131 | |
364 | fd_kill (EV_A_ fd); |
132 | if (ev) |
365 | return; |
133 | event ((struct ev_watcher *)w, ev); |
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134 | } |
366 | } |
135 | } |
367 | } |
136 | |
368 | |
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369 | /*****************************************************************************/ |
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370 | |
137 | static struct ev_timer **atimers; |
371 | static struct ev_timer **timers; |
138 | static int atimermax, atimercnt; |
372 | static int timermax, timercnt; |
139 | |
373 | |
140 | static struct ev_timer **rtimers; |
374 | static struct ev_periodic **periodics; |
141 | static int rtimermax, rtimercnt; |
375 | static int periodicmax, periodiccnt; |
142 | |
376 | |
143 | static void |
377 | static void |
144 | upheap (struct ev_timer **timers, int k) |
378 | upheap (WT *timers, int k) |
145 | { |
379 | { |
146 | struct ev_timer *w = timers [k]; |
380 | WT w = timers [k]; |
147 | |
381 | |
148 | while (k && timers [k >> 1]->at > w->at) |
382 | while (k && timers [k >> 1]->at > w->at) |
149 | { |
383 | { |
150 | timers [k] = timers [k >> 1]; |
384 | timers [k] = timers [k >> 1]; |
151 | timers [k]->active = k + 1; |
385 | timers [k]->active = k + 1; |
… | |
… | |
156 | timers [k]->active = k + 1; |
390 | timers [k]->active = k + 1; |
157 | |
391 | |
158 | } |
392 | } |
159 | |
393 | |
160 | static void |
394 | static void |
161 | downheap (struct ev_timer **timers, int N, int k) |
395 | downheap (WT *timers, int N, int k) |
162 | { |
396 | { |
163 | struct ev_timer *w = timers [k]; |
397 | WT w = timers [k]; |
164 | |
398 | |
165 | while (k < (N >> 1)) |
399 | while (k < (N >> 1)) |
166 | { |
400 | { |
167 | int j = k << 1; |
401 | int j = k << 1; |
168 | |
402 | |
… | |
… | |
179 | |
413 | |
180 | timers [k] = w; |
414 | timers [k] = w; |
181 | timers [k]->active = k + 1; |
415 | timers [k]->active = k + 1; |
182 | } |
416 | } |
183 | |
417 | |
184 | static struct ev_signal **signals; |
418 | /*****************************************************************************/ |
|
|
419 | |
|
|
420 | typedef struct |
|
|
421 | { |
|
|
422 | struct ev_watcher_list *head; |
|
|
423 | sig_atomic_t volatile gotsig; |
|
|
424 | } ANSIG; |
|
|
425 | |
|
|
426 | static ANSIG *signals; |
185 | static int signalmax; |
427 | static int signalmax; |
186 | |
428 | |
|
|
429 | static int sigpipe [2]; |
|
|
430 | static sig_atomic_t volatile gotsig; |
|
|
431 | static struct ev_io sigev; |
|
|
432 | |
187 | static void |
433 | static void |
188 | signals_init (struct ev_signal **base, int count) |
434 | signals_init (ANSIG *base, int count) |
189 | { |
435 | { |
190 | while (count--) |
436 | while (count--) |
191 | *base++ = 0; |
437 | { |
192 | } |
438 | base->head = 0; |
|
|
439 | base->gotsig = 0; |
193 | |
440 | |
|
|
441 | ++base; |
|
|
442 | } |
|
|
443 | } |
|
|
444 | |
|
|
445 | static void |
|
|
446 | sighandler (int signum) |
|
|
447 | { |
|
|
448 | signals [signum - 1].gotsig = 1; |
|
|
449 | |
|
|
450 | if (!gotsig) |
|
|
451 | { |
|
|
452 | int old_errno = errno; |
|
|
453 | gotsig = 1; |
|
|
454 | write (sigpipe [1], &signum, 1); |
|
|
455 | errno = old_errno; |
|
|
456 | } |
|
|
457 | } |
|
|
458 | |
|
|
459 | static void |
|
|
460 | sigcb (EV_P_ struct ev_io *iow, int revents) |
|
|
461 | { |
|
|
462 | struct ev_watcher_list *w; |
|
|
463 | int signum; |
|
|
464 | |
|
|
465 | read (sigpipe [0], &revents, 1); |
|
|
466 | gotsig = 0; |
|
|
467 | |
|
|
468 | for (signum = signalmax; signum--; ) |
|
|
469 | if (signals [signum].gotsig) |
|
|
470 | { |
|
|
471 | signals [signum].gotsig = 0; |
|
|
472 | |
|
|
473 | for (w = signals [signum].head; w; w = w->next) |
|
|
474 | event (EV_A_ (W)w, EV_SIGNAL); |
|
|
475 | } |
|
|
476 | } |
|
|
477 | |
|
|
478 | static void |
|
|
479 | siginit (EV_P) |
|
|
480 | { |
|
|
481 | #ifndef WIN32 |
|
|
482 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
483 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
484 | |
|
|
485 | /* rather than sort out wether we really need nb, set it */ |
|
|
486 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
487 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
488 | #endif |
|
|
489 | |
|
|
490 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
491 | ev_io_start (&sigev); |
|
|
492 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
493 | } |
|
|
494 | |
|
|
495 | /*****************************************************************************/ |
|
|
496 | |
|
|
497 | static struct ev_idle **idles; |
|
|
498 | static int idlemax, idlecnt; |
|
|
499 | |
|
|
500 | static struct ev_prepare **prepares; |
|
|
501 | static int preparemax, preparecnt; |
|
|
502 | |
|
|
503 | static struct ev_check **checks; |
|
|
504 | static int checkmax, checkcnt; |
|
|
505 | |
|
|
506 | /*****************************************************************************/ |
|
|
507 | |
|
|
508 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
509 | static struct ev_signal childev; |
|
|
510 | |
|
|
511 | #ifndef WIN32 |
|
|
512 | |
|
|
513 | #ifndef WCONTINUED |
|
|
514 | # define WCONTINUED 0 |
|
|
515 | #endif |
|
|
516 | |
|
|
517 | static void |
|
|
518 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
519 | { |
|
|
520 | struct ev_child *w; |
|
|
521 | |
|
|
522 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
523 | if (w->pid == pid || !w->pid) |
|
|
524 | { |
|
|
525 | w->priority = sw->priority; /* need to do it *now* */ |
|
|
526 | w->rpid = pid; |
|
|
527 | w->rstatus = status; |
|
|
528 | event (EV_A_ (W)w, EV_CHILD); |
|
|
529 | } |
|
|
530 | } |
|
|
531 | |
|
|
532 | static void |
|
|
533 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
534 | { |
|
|
535 | int pid, status; |
|
|
536 | |
|
|
537 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
538 | { |
|
|
539 | /* make sure we are called again until all childs have been reaped */ |
|
|
540 | event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
541 | |
|
|
542 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
543 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
544 | } |
|
|
545 | } |
|
|
546 | |
|
|
547 | #endif |
|
|
548 | |
|
|
549 | /*****************************************************************************/ |
|
|
550 | |
|
|
551 | #if EV_USE_KQUEUE |
|
|
552 | # include "ev_kqueue.c" |
|
|
553 | #endif |
194 | #if HAVE_EPOLL |
554 | #if EV_USE_EPOLL |
195 | # include "ev_epoll.c" |
555 | # include "ev_epoll.c" |
196 | #endif |
556 | #endif |
|
|
557 | #if EV_USEV_POLL |
|
|
558 | # include "ev_poll.c" |
|
|
559 | #endif |
197 | #if HAVE_SELECT |
560 | #if EV_USE_SELECT |
198 | # include "ev_select.c" |
561 | # include "ev_select.c" |
199 | #endif |
562 | #endif |
200 | |
563 | |
201 | int ev_init (int flags) |
564 | int |
|
|
565 | ev_version_major (void) |
202 | { |
566 | { |
|
|
567 | return EV_VERSION_MAJOR; |
|
|
568 | } |
|
|
569 | |
|
|
570 | int |
|
|
571 | ev_version_minor (void) |
|
|
572 | { |
|
|
573 | return EV_VERSION_MINOR; |
|
|
574 | } |
|
|
575 | |
|
|
576 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
577 | static int |
|
|
578 | enable_secure (void) |
|
|
579 | { |
|
|
580 | #ifdef WIN32 |
|
|
581 | return 0; |
|
|
582 | #else |
|
|
583 | return getuid () != geteuid () |
|
|
584 | || getgid () != getegid (); |
|
|
585 | #endif |
|
|
586 | } |
|
|
587 | |
|
|
588 | int |
|
|
589 | ev_method (EV_P) |
|
|
590 | { |
|
|
591 | return method; |
|
|
592 | } |
|
|
593 | |
|
|
594 | int |
|
|
595 | ev_init (EV_P_ int methods) |
|
|
596 | { |
|
|
597 | if (!method) |
|
|
598 | { |
203 | #if HAVE_MONOTONIC |
599 | #if EV_USE_MONOTONIC |
204 | { |
600 | { |
205 | struct timespec ts; |
601 | struct timespec ts; |
206 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
602 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
207 | have_monotonic = 1; |
603 | have_monotonic = 1; |
208 | } |
604 | } |
209 | #endif |
605 | #endif |
210 | |
606 | |
211 | ev_now = ev_time (); |
607 | rt_now = ev_time (); |
212 | now = get_clock (); |
608 | mn_now = get_clock (); |
|
|
609 | now_floor = mn_now; |
213 | diff = ev_now - now; |
610 | diff = rt_now - mn_now; |
214 | |
611 | |
|
|
612 | if (pipe (sigpipe)) |
|
|
613 | return 0; |
|
|
614 | |
|
|
615 | if (methods == EVMETHOD_AUTO) |
|
|
616 | if (!enable_secure () && getenv ("LIBmethodS")) |
|
|
617 | methods = atoi (getenv ("LIBmethodS")); |
|
|
618 | else |
|
|
619 | methods = EVMETHOD_ANY; |
|
|
620 | |
|
|
621 | method = 0; |
|
|
622 | #if EV_USE_KQUEUE |
|
|
623 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
624 | #endif |
215 | #if HAVE_EPOLL |
625 | #if EV_USE_EPOLL |
216 | if (epoll_init (flags)) |
626 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
217 | return ev_method; |
|
|
218 | #endif |
627 | #endif |
|
|
628 | #if EV_USEV_POLL |
|
|
629 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
630 | #endif |
219 | #if HAVE_SELECT |
631 | #if EV_USE_SELECT |
220 | if (select_init (flags)) |
632 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
221 | return ev_method; |
|
|
222 | #endif |
633 | #endif |
223 | |
634 | |
224 | ev_method = EVMETHOD_NONE; |
635 | if (method) |
225 | return ev_method; |
|
|
226 | } |
|
|
227 | |
|
|
228 | void ev_prefork (void) |
|
|
229 | { |
|
|
230 | } |
|
|
231 | |
|
|
232 | void ev_postfork_parent (void) |
|
|
233 | { |
|
|
234 | } |
|
|
235 | |
|
|
236 | void ev_postfork_child (void) |
|
|
237 | { |
|
|
238 | #if HAVE_EPOLL |
|
|
239 | epoll_postfork_child (); |
|
|
240 | #endif |
|
|
241 | } |
|
|
242 | |
|
|
243 | static void |
|
|
244 | call_pending () |
|
|
245 | { |
|
|
246 | int i; |
|
|
247 | |
|
|
248 | for (i = 0; i < pendingcnt; ++i) |
|
|
249 | { |
|
|
250 | ANPENDING *p = pendings + i; |
|
|
251 | |
|
|
252 | if (p->w) |
|
|
253 | { |
636 | { |
254 | p->w->pending = 0; |
637 | ev_watcher_init (&sigev, sigcb); |
255 | p->w->cb (p->w, p->events); |
638 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
639 | siginit (EV_A); |
|
|
640 | |
|
|
641 | #ifndef WIN32 |
|
|
642 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
643 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
644 | ev_signal_start (EV_A_ &childev); |
|
|
645 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
646 | #endif |
256 | } |
647 | } |
257 | } |
648 | } |
258 | |
649 | |
259 | pendingcnt = 0; |
650 | return method; |
260 | } |
651 | } |
261 | |
652 | |
262 | static void |
653 | /*****************************************************************************/ |
263 | timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now) |
654 | |
|
|
655 | void |
|
|
656 | ev_fork_prepare (void) |
264 | { |
657 | { |
|
|
658 | /* nop */ |
|
|
659 | } |
|
|
660 | |
|
|
661 | void |
|
|
662 | ev_fork_parent (void) |
|
|
663 | { |
|
|
664 | /* nop */ |
|
|
665 | } |
|
|
666 | |
|
|
667 | void |
|
|
668 | ev_fork_child (void) |
|
|
669 | { |
|
|
670 | #if EV_USE_EPOLL |
|
|
671 | if (method == EVMETHOD_EPOLL) |
|
|
672 | epoll_postfork_child (); |
|
|
673 | #endif |
|
|
674 | |
|
|
675 | ev_io_stop (&sigev); |
|
|
676 | close (sigpipe [0]); |
|
|
677 | close (sigpipe [1]); |
|
|
678 | pipe (sigpipe); |
|
|
679 | siginit (); |
|
|
680 | } |
|
|
681 | |
|
|
682 | /*****************************************************************************/ |
|
|
683 | |
|
|
684 | static void |
|
|
685 | call_pending (EV_P) |
|
|
686 | { |
|
|
687 | int pri; |
|
|
688 | |
|
|
689 | for (pri = NUMPRI; pri--; ) |
|
|
690 | while (pendingcnt [pri]) |
|
|
691 | { |
|
|
692 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
|
|
693 | |
|
|
694 | if (p->w) |
|
|
695 | { |
|
|
696 | p->w->pending = 0; |
|
|
697 | p->w->cb (EV_A_ p->w, p->events); |
|
|
698 | } |
|
|
699 | } |
|
|
700 | } |
|
|
701 | |
|
|
702 | static void |
|
|
703 | timers_reify (EV_P) |
|
|
704 | { |
265 | while (timercnt && timers [0]->at <= now) |
705 | while (timercnt && timers [0]->at <= mn_now) |
266 | { |
706 | { |
267 | struct ev_timer *w = timers [0]; |
707 | struct ev_timer *w = timers [0]; |
268 | |
708 | |
269 | /* first reschedule or stop timer */ |
709 | /* first reschedule or stop timer */ |
270 | if (w->repeat) |
710 | if (w->repeat) |
271 | { |
711 | { |
272 | if (w->is_abs) |
712 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
273 | w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat; |
|
|
274 | else |
|
|
275 | w->at = now + w->repeat; |
713 | w->at = mn_now + w->repeat; |
276 | |
|
|
277 | assert (w->at > now); |
|
|
278 | |
|
|
279 | downheap (timers, timercnt, 0); |
714 | downheap ((WT *)timers, timercnt, 0); |
280 | } |
715 | } |
281 | else |
716 | else |
|
|
717 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
718 | |
|
|
719 | event ((W)w, EV_TIMEOUT); |
|
|
720 | } |
|
|
721 | } |
|
|
722 | |
|
|
723 | static void |
|
|
724 | periodics_reify (EV_P) |
|
|
725 | { |
|
|
726 | while (periodiccnt && periodics [0]->at <= rt_now) |
|
|
727 | { |
|
|
728 | struct ev_periodic *w = periodics [0]; |
|
|
729 | |
|
|
730 | /* first reschedule or stop timer */ |
|
|
731 | if (w->interval) |
282 | { |
732 | { |
283 | evtimer_stop (w); /* nonrepeating: stop timer */ |
733 | w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; |
284 | --timercnt; /* maybe pass by reference instead? */ |
734 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); |
|
|
735 | downheap ((WT *)periodics, periodiccnt, 0); |
285 | } |
736 | } |
|
|
737 | else |
|
|
738 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
286 | |
739 | |
287 | event ((struct ev_watcher *)w, EV_TIMEOUT); |
740 | event (EV_A_ (W)w, EV_PERIODIC); |
288 | } |
741 | } |
289 | } |
742 | } |
290 | |
743 | |
291 | static void |
744 | static void |
292 | time_update () |
745 | periodics_reschedule (EV_P_ ev_tstamp diff) |
293 | { |
746 | { |
294 | int i; |
747 | int i; |
295 | ev_now = ev_time (); |
|
|
296 | |
748 | |
297 | if (have_monotonic) |
749 | /* adjust periodics after time jump */ |
|
|
750 | for (i = 0; i < periodiccnt; ++i) |
298 | { |
751 | { |
299 | ev_tstamp odiff = diff; |
752 | struct ev_periodic *w = periodics [i]; |
300 | |
753 | |
301 | /* detecting time jumps is much more difficult */ |
754 | if (w->interval) |
302 | for (i = 2; --i; ) /* loop a few times, before making important decisions */ |
|
|
303 | { |
755 | { |
304 | now = get_clock (); |
756 | ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; |
305 | diff = ev_now - now; |
|
|
306 | |
757 | |
307 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
758 | if (fabs (diff) >= 1e-4) |
308 | return; /* all is well */ |
759 | { |
|
|
760 | ev_periodic_stop (EV_A_ w); |
|
|
761 | ev_periodic_start (EV_A_ w); |
309 | |
762 | |
310 | ev_now = ev_time (); |
763 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
764 | } |
311 | } |
765 | } |
|
|
766 | } |
|
|
767 | } |
312 | |
768 | |
313 | /* time jump detected, reschedule atimers */ |
769 | inline int |
314 | for (i = 0; i < atimercnt; ++i) |
770 | time_update_monotonic (EV_P) |
|
|
771 | { |
|
|
772 | mn_now = get_clock (); |
|
|
773 | |
|
|
774 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
775 | { |
|
|
776 | rt_now = mn_now + diff; |
|
|
777 | return 0; |
|
|
778 | } |
|
|
779 | else |
|
|
780 | { |
|
|
781 | now_floor = mn_now; |
|
|
782 | rt_now = ev_time (); |
|
|
783 | return 1; |
|
|
784 | } |
|
|
785 | } |
|
|
786 | |
|
|
787 | static void |
|
|
788 | time_update (EV_P) |
|
|
789 | { |
|
|
790 | int i; |
|
|
791 | |
|
|
792 | #if EV_USE_MONOTONIC |
|
|
793 | if (expect_true (have_monotonic)) |
|
|
794 | { |
|
|
795 | if (time_update_monotonic (EV_A)) |
315 | { |
796 | { |
316 | struct ev_timer *w = atimers [i]; |
797 | ev_tstamp odiff = diff; |
317 | w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
798 | |
|
|
799 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
800 | { |
|
|
801 | diff = rt_now - mn_now; |
|
|
802 | |
|
|
803 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
804 | return; /* all is well */ |
|
|
805 | |
|
|
806 | rt_now = ev_time (); |
|
|
807 | mn_now = get_clock (); |
|
|
808 | now_floor = mn_now; |
|
|
809 | } |
|
|
810 | |
|
|
811 | periodics_reschedule (EV_A_ diff - odiff); |
|
|
812 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
318 | } |
813 | } |
319 | } |
814 | } |
320 | else |
815 | else |
|
|
816 | #endif |
321 | { |
817 | { |
322 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
818 | rt_now = ev_time (); |
323 | /* time jump detected, adjust rtimers */ |
819 | |
|
|
820 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
821 | { |
|
|
822 | periodics_reschedule (EV_A_ rt_now - mn_now); |
|
|
823 | |
|
|
824 | /* adjust timers. this is easy, as the offset is the same for all */ |
324 | for (i = 0; i < rtimercnt; ++i) |
825 | for (i = 0; i < timercnt; ++i) |
325 | rtimers [i]->at += ev_now - now; |
826 | timers [i]->at += diff; |
|
|
827 | } |
326 | |
828 | |
327 | now = ev_now; |
829 | mn_now = rt_now; |
328 | } |
830 | } |
329 | } |
831 | } |
330 | |
832 | |
331 | int ev_loop_done; |
833 | void |
|
|
834 | ev_ref (EV_P) |
|
|
835 | { |
|
|
836 | ++activecnt; |
|
|
837 | } |
332 | |
838 | |
|
|
839 | void |
|
|
840 | ev_unref (EV_P) |
|
|
841 | { |
|
|
842 | --activecnt; |
|
|
843 | } |
|
|
844 | |
|
|
845 | static int loop_done; |
|
|
846 | |
|
|
847 | void |
333 | void ev_loop (int flags) |
848 | ev_loop (EV_P_ int flags) |
334 | { |
849 | { |
335 | double block; |
850 | double block; |
336 | ev_loop_done = flags & EVLOOP_ONESHOT; |
851 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
337 | |
852 | |
338 | do |
853 | do |
339 | { |
854 | { |
|
|
855 | /* queue check watchers (and execute them) */ |
|
|
856 | if (expect_false (preparecnt)) |
|
|
857 | { |
|
|
858 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
859 | call_pending (EV_A); |
|
|
860 | } |
|
|
861 | |
340 | /* update fd-related kernel structures */ |
862 | /* update fd-related kernel structures */ |
341 | method_reify (); fdchangecnt = 0; |
863 | fd_reify (EV_A); |
342 | |
864 | |
343 | /* calculate blocking time */ |
865 | /* calculate blocking time */ |
|
|
866 | |
|
|
867 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
868 | always have timers, we just calculate it always */ |
|
|
869 | #if EV_USE_MONOTONIC |
|
|
870 | if (expect_true (have_monotonic)) |
|
|
871 | time_update_monotonic (EV_A); |
|
|
872 | else |
|
|
873 | #endif |
|
|
874 | { |
|
|
875 | rt_now = ev_time (); |
|
|
876 | mn_now = rt_now; |
|
|
877 | } |
|
|
878 | |
344 | if (flags & EVLOOP_NONBLOCK) |
879 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
345 | block = 0.; |
880 | block = 0.; |
346 | else |
881 | else |
347 | { |
882 | { |
348 | block = MAX_BLOCKTIME; |
883 | block = MAX_BLOCKTIME; |
349 | |
884 | |
350 | if (rtimercnt) |
885 | if (timercnt) |
351 | { |
886 | { |
352 | ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge; |
887 | ev_tstamp to = timers [0]->at - mn_now + method_fudge; |
353 | if (block > to) block = to; |
888 | if (block > to) block = to; |
354 | } |
889 | } |
355 | |
890 | |
356 | if (atimercnt) |
891 | if (periodiccnt) |
357 | { |
892 | { |
358 | ev_tstamp to = atimers [0]->at - ev_time () + method_fudge; |
893 | ev_tstamp to = periodics [0]->at - rt_now + method_fudge; |
359 | if (block > to) block = to; |
894 | if (block > to) block = to; |
360 | } |
895 | } |
361 | |
896 | |
362 | if (block < 0.) block = 0.; |
897 | if (block < 0.) block = 0.; |
363 | } |
898 | } |
364 | |
899 | |
365 | method_poll (block); |
900 | method_poll (EV_A_ block); |
366 | |
901 | |
367 | /* update ev_now, do magic */ |
902 | /* update rt_now, do magic */ |
368 | time_update (); |
903 | time_update (EV_A); |
369 | |
904 | |
370 | /* put pending timers into pendign queue and reschedule them */ |
905 | /* queue pending timers and reschedule them */ |
371 | /* absolute timers first */ |
906 | timers_reify (EV_A); /* relative timers called last */ |
372 | timers_reify (atimers, atimercnt, ev_now); |
907 | periodics_reify (EV_A); /* absolute timers called first */ |
373 | /* relative timers second */ |
|
|
374 | timers_reify (rtimers, rtimercnt, now); |
|
|
375 | |
908 | |
|
|
909 | /* queue idle watchers unless io or timers are pending */ |
|
|
910 | if (!pendingcnt) |
|
|
911 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
|
|
912 | |
|
|
913 | /* queue check watchers, to be executed first */ |
|
|
914 | if (checkcnt) |
|
|
915 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
916 | |
376 | call_pending (); |
917 | call_pending (EV_A); |
377 | } |
918 | } |
378 | while (!ev_loop_done); |
919 | while (activecnt && !loop_done); |
379 | } |
|
|
380 | |
920 | |
381 | static void |
921 | if (loop_done != 2) |
382 | wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
922 | loop_done = 0; |
|
|
923 | } |
|
|
924 | |
|
|
925 | void |
|
|
926 | ev_unloop (EV_P_ int how) |
|
|
927 | { |
|
|
928 | loop_done = how; |
|
|
929 | } |
|
|
930 | |
|
|
931 | /*****************************************************************************/ |
|
|
932 | |
|
|
933 | inline void |
|
|
934 | wlist_add (WL *head, WL elem) |
383 | { |
935 | { |
384 | elem->next = *head; |
936 | elem->next = *head; |
385 | *head = elem; |
937 | *head = elem; |
386 | } |
938 | } |
387 | |
939 | |
388 | static void |
940 | inline void |
389 | wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
941 | wlist_del (WL *head, WL elem) |
390 | { |
942 | { |
391 | while (*head) |
943 | while (*head) |
392 | { |
944 | { |
393 | if (*head == elem) |
945 | if (*head == elem) |
394 | { |
946 | { |
… | |
… | |
398 | |
950 | |
399 | head = &(*head)->next; |
951 | head = &(*head)->next; |
400 | } |
952 | } |
401 | } |
953 | } |
402 | |
954 | |
403 | static void |
955 | inline void |
404 | ev_start (struct ev_watcher *w, int active) |
956 | ev_clear_pending (EV_P_ W w) |
405 | { |
957 | { |
|
|
958 | if (w->pending) |
|
|
959 | { |
|
|
960 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
406 | w->pending = 0; |
961 | w->pending = 0; |
|
|
962 | } |
|
|
963 | } |
|
|
964 | |
|
|
965 | inline void |
|
|
966 | ev_start (EV_P_ W w, int active) |
|
|
967 | { |
|
|
968 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
969 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
970 | |
407 | w->active = active; |
971 | w->active = active; |
|
|
972 | ev_ref (EV_A); |
408 | } |
973 | } |
409 | |
974 | |
410 | static void |
975 | inline void |
411 | ev_stop (struct ev_watcher *w) |
976 | ev_stop (EV_P_ W w) |
412 | { |
977 | { |
413 | if (w->pending) |
978 | ev_unref (EV_A); |
414 | pendings [w->pending - 1].w = 0; |
|
|
415 | |
|
|
416 | w->active = 0; |
979 | w->active = 0; |
417 | /* nop */ |
|
|
418 | } |
980 | } |
419 | |
981 | |
|
|
982 | /*****************************************************************************/ |
|
|
983 | |
420 | void |
984 | void |
421 | evio_start (struct ev_io *w) |
985 | ev_io_start (EV_P_ struct ev_io *w) |
422 | { |
986 | { |
|
|
987 | int fd = w->fd; |
|
|
988 | |
423 | if (ev_is_active (w)) |
989 | if (ev_is_active (w)) |
424 | return; |
990 | return; |
425 | |
991 | |
426 | int fd = w->fd; |
992 | assert (("ev_io_start called with negative fd", fd >= 0)); |
427 | |
993 | |
428 | ev_start ((struct ev_watcher *)w, 1); |
994 | ev_start (EV_A_ (W)w, 1); |
429 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
995 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
430 | wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w); |
996 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
431 | |
997 | |
432 | ++fdchangecnt; |
998 | fd_change (EV_A_ fd); |
433 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
434 | fdchanges [fdchangecnt - 1] = fd; |
|
|
435 | } |
999 | } |
436 | |
1000 | |
437 | void |
1001 | void |
438 | evio_stop (struct ev_io *w) |
1002 | ev_io_stop (EV_P_ struct ev_io *w) |
439 | { |
1003 | { |
|
|
1004 | ev_clear_pending (EV_A_ (W)w); |
440 | if (!ev_is_active (w)) |
1005 | if (!ev_is_active (w)) |
441 | return; |
1006 | return; |
442 | |
1007 | |
443 | wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w); |
1008 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
444 | ev_stop ((struct ev_watcher *)w); |
1009 | ev_stop (EV_A_ (W)w); |
445 | |
1010 | |
446 | ++fdchangecnt; |
1011 | fd_change (EV_A_ w->fd); |
447 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
448 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
449 | } |
1012 | } |
450 | |
1013 | |
451 | void |
1014 | void |
452 | evtimer_start (struct ev_timer *w) |
1015 | ev_timer_start (EV_P_ struct ev_timer *w) |
453 | { |
1016 | { |
454 | if (ev_is_active (w)) |
1017 | if (ev_is_active (w)) |
455 | return; |
1018 | return; |
456 | |
1019 | |
457 | if (w->is_abs) |
1020 | w->at += mn_now; |
|
|
1021 | |
|
|
1022 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
1023 | |
|
|
1024 | ev_start (EV_A_ (W)w, ++timercnt); |
|
|
1025 | array_needsize (timers, timermax, timercnt, ); |
|
|
1026 | timers [timercnt - 1] = w; |
|
|
1027 | upheap ((WT *)timers, timercnt - 1); |
|
|
1028 | } |
|
|
1029 | |
|
|
1030 | void |
|
|
1031 | ev_timer_stop (EV_P_ struct ev_timer *w) |
|
|
1032 | { |
|
|
1033 | ev_clear_pending (EV_A_ (W)w); |
|
|
1034 | if (!ev_is_active (w)) |
|
|
1035 | return; |
|
|
1036 | |
|
|
1037 | if (w->active < timercnt--) |
|
|
1038 | { |
|
|
1039 | timers [w->active - 1] = timers [timercnt]; |
|
|
1040 | downheap ((WT *)timers, timercnt, w->active - 1); |
458 | { |
1041 | } |
459 | /* this formula differs from the one in timer_reify becuse we do not round up */ |
1042 | |
|
|
1043 | w->at = w->repeat; |
|
|
1044 | |
|
|
1045 | ev_stop (EV_A_ (W)w); |
|
|
1046 | } |
|
|
1047 | |
|
|
1048 | void |
|
|
1049 | ev_timer_again (EV_P_ struct ev_timer *w) |
|
|
1050 | { |
|
|
1051 | if (ev_is_active (w)) |
|
|
1052 | { |
460 | if (w->repeat) |
1053 | if (w->repeat) |
|
|
1054 | { |
|
|
1055 | w->at = mn_now + w->repeat; |
|
|
1056 | downheap ((WT *)timers, timercnt, w->active - 1); |
|
|
1057 | } |
|
|
1058 | else |
|
|
1059 | ev_timer_stop (EV_A_ w); |
|
|
1060 | } |
|
|
1061 | else if (w->repeat) |
|
|
1062 | ev_timer_start (EV_A_ w); |
|
|
1063 | } |
|
|
1064 | |
|
|
1065 | void |
|
|
1066 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
|
|
1067 | { |
|
|
1068 | if (ev_is_active (w)) |
|
|
1069 | return; |
|
|
1070 | |
|
|
1071 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
1072 | |
|
|
1073 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
1074 | if (w->interval) |
461 | w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
1075 | w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; |
462 | |
1076 | |
463 | ev_start ((struct ev_watcher *)w, ++atimercnt); |
1077 | ev_start (EV_A_ (W)w, ++periodiccnt); |
464 | array_needsize (atimers, atimermax, atimercnt, ); |
1078 | array_needsize (periodics, periodicmax, periodiccnt, ); |
465 | atimers [atimercnt - 1] = w; |
1079 | periodics [periodiccnt - 1] = w; |
466 | upheap (atimers, atimercnt - 1); |
1080 | upheap ((WT *)periodics, periodiccnt - 1); |
|
|
1081 | } |
|
|
1082 | |
|
|
1083 | void |
|
|
1084 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
|
|
1085 | { |
|
|
1086 | ev_clear_pending (EV_A_ (W)w); |
|
|
1087 | if (!ev_is_active (w)) |
|
|
1088 | return; |
|
|
1089 | |
|
|
1090 | if (w->active < periodiccnt--) |
467 | } |
1091 | { |
|
|
1092 | periodics [w->active - 1] = periodics [periodiccnt]; |
|
|
1093 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
|
|
1094 | } |
|
|
1095 | |
|
|
1096 | ev_stop (EV_A_ (W)w); |
|
|
1097 | } |
|
|
1098 | |
|
|
1099 | #ifndef SA_RESTART |
|
|
1100 | # define SA_RESTART 0 |
|
|
1101 | #endif |
|
|
1102 | |
|
|
1103 | void |
|
|
1104 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1105 | { |
|
|
1106 | if (ev_is_active (w)) |
|
|
1107 | return; |
|
|
1108 | |
|
|
1109 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1110 | |
|
|
1111 | ev_start (EV_A_ (W)w, 1); |
|
|
1112 | array_needsize (signals, signalmax, w->signum, signals_init); |
|
|
1113 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1114 | |
|
|
1115 | if (!w->next) |
|
|
1116 | { |
|
|
1117 | struct sigaction sa; |
|
|
1118 | sa.sa_handler = sighandler; |
|
|
1119 | sigfillset (&sa.sa_mask); |
|
|
1120 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
1121 | sigaction (w->signum, &sa, 0); |
|
|
1122 | } |
|
|
1123 | } |
|
|
1124 | |
|
|
1125 | void |
|
|
1126 | ev_signal_stop (EV_P_ struct ev_signal *w) |
|
|
1127 | { |
|
|
1128 | ev_clear_pending (EV_A_ (W)w); |
|
|
1129 | if (!ev_is_active (w)) |
|
|
1130 | return; |
|
|
1131 | |
|
|
1132 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1133 | ev_stop (EV_A_ (W)w); |
|
|
1134 | |
|
|
1135 | if (!signals [w->signum - 1].head) |
|
|
1136 | signal (w->signum, SIG_DFL); |
|
|
1137 | } |
|
|
1138 | |
|
|
1139 | void |
|
|
1140 | ev_idle_start (EV_P_ struct ev_idle *w) |
|
|
1141 | { |
|
|
1142 | if (ev_is_active (w)) |
|
|
1143 | return; |
|
|
1144 | |
|
|
1145 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1146 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
1147 | idles [idlecnt - 1] = w; |
|
|
1148 | } |
|
|
1149 | |
|
|
1150 | void |
|
|
1151 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1152 | { |
|
|
1153 | ev_clear_pending (EV_A_ (W)w); |
|
|
1154 | if (ev_is_active (w)) |
|
|
1155 | return; |
|
|
1156 | |
|
|
1157 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
1158 | ev_stop (EV_A_ (W)w); |
|
|
1159 | } |
|
|
1160 | |
|
|
1161 | void |
|
|
1162 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1163 | { |
|
|
1164 | if (ev_is_active (w)) |
|
|
1165 | return; |
|
|
1166 | |
|
|
1167 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1168 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1169 | prepares [preparecnt - 1] = w; |
|
|
1170 | } |
|
|
1171 | |
|
|
1172 | void |
|
|
1173 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1174 | { |
|
|
1175 | ev_clear_pending (EV_A_ (W)w); |
|
|
1176 | if (ev_is_active (w)) |
|
|
1177 | return; |
|
|
1178 | |
|
|
1179 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
1180 | ev_stop (EV_A_ (W)w); |
|
|
1181 | } |
|
|
1182 | |
|
|
1183 | void |
|
|
1184 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1185 | { |
|
|
1186 | if (ev_is_active (w)) |
|
|
1187 | return; |
|
|
1188 | |
|
|
1189 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1190 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
1191 | checks [checkcnt - 1] = w; |
|
|
1192 | } |
|
|
1193 | |
|
|
1194 | void |
|
|
1195 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1196 | { |
|
|
1197 | ev_clear_pending (EV_A_ (W)w); |
|
|
1198 | if (ev_is_active (w)) |
|
|
1199 | return; |
|
|
1200 | |
|
|
1201 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
1202 | ev_stop (EV_A_ (W)w); |
|
|
1203 | } |
|
|
1204 | |
|
|
1205 | void |
|
|
1206 | ev_child_start (EV_P_ struct ev_child *w) |
|
|
1207 | { |
|
|
1208 | if (ev_is_active (w)) |
|
|
1209 | return; |
|
|
1210 | |
|
|
1211 | ev_start (EV_A_ (W)w, 1); |
|
|
1212 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1213 | } |
|
|
1214 | |
|
|
1215 | void |
|
|
1216 | ev_child_stop (EV_P_ struct ev_child *w) |
|
|
1217 | { |
|
|
1218 | ev_clear_pending (EV_A_ (W)w); |
|
|
1219 | if (ev_is_active (w)) |
|
|
1220 | return; |
|
|
1221 | |
|
|
1222 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1223 | ev_stop (EV_A_ (W)w); |
|
|
1224 | } |
|
|
1225 | |
|
|
1226 | /*****************************************************************************/ |
|
|
1227 | |
|
|
1228 | struct ev_once |
|
|
1229 | { |
|
|
1230 | struct ev_io io; |
|
|
1231 | struct ev_timer to; |
|
|
1232 | void (*cb)(int revents, void *arg); |
|
|
1233 | void *arg; |
|
|
1234 | }; |
|
|
1235 | |
|
|
1236 | static void |
|
|
1237 | once_cb (EV_P_ struct ev_once *once, int revents) |
|
|
1238 | { |
|
|
1239 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
1240 | void *arg = once->arg; |
|
|
1241 | |
|
|
1242 | ev_io_stop (EV_A_ &once->io); |
|
|
1243 | ev_timer_stop (EV_A_ &once->to); |
|
|
1244 | free (once); |
|
|
1245 | |
|
|
1246 | cb (revents, arg); |
|
|
1247 | } |
|
|
1248 | |
|
|
1249 | static void |
|
|
1250 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
|
|
1251 | { |
|
|
1252 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
|
|
1253 | } |
|
|
1254 | |
|
|
1255 | static void |
|
|
1256 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
|
|
1257 | { |
|
|
1258 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
|
|
1259 | } |
|
|
1260 | |
|
|
1261 | void |
|
|
1262 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
|
|
1263 | { |
|
|
1264 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
|
|
1265 | |
|
|
1266 | if (!once) |
|
|
1267 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
468 | else |
1268 | else |
469 | { |
1269 | { |
470 | w->at += now; |
1270 | once->cb = cb; |
|
|
1271 | once->arg = arg; |
471 | |
1272 | |
472 | ev_start ((struct ev_watcher *)w, ++rtimercnt); |
1273 | ev_watcher_init (&once->io, once_cb_io); |
473 | array_needsize (rtimers, rtimermax, rtimercnt, ); |
1274 | if (fd >= 0) |
474 | rtimers [rtimercnt - 1] = w; |
|
|
475 | upheap (rtimers, rtimercnt - 1); |
|
|
476 | } |
|
|
477 | |
|
|
478 | } |
|
|
479 | |
|
|
480 | void |
|
|
481 | evtimer_stop (struct ev_timer *w) |
|
|
482 | { |
|
|
483 | if (!ev_is_active (w)) |
|
|
484 | return; |
|
|
485 | |
|
|
486 | if (w->is_abs) |
|
|
487 | { |
|
|
488 | if (w->active < atimercnt--) |
|
|
489 | { |
1275 | { |
490 | atimers [w->active - 1] = atimers [atimercnt]; |
1276 | ev_io_set (&once->io, fd, events); |
491 | downheap (atimers, atimercnt, w->active - 1); |
1277 | ev_io_start (EV_A_ &once->io); |
492 | } |
1278 | } |
493 | } |
1279 | |
494 | else |
1280 | ev_watcher_init (&once->to, once_cb_to); |
495 | { |
1281 | if (timeout >= 0.) |
496 | if (w->active < rtimercnt--) |
|
|
497 | { |
1282 | { |
498 | rtimers [w->active - 1] = rtimers [rtimercnt]; |
1283 | ev_timer_set (&once->to, timeout, 0.); |
499 | downheap (rtimers, rtimercnt, w->active - 1); |
1284 | ev_timer_start (EV_A_ &once->to); |
500 | } |
1285 | } |
501 | } |
1286 | } |
502 | |
|
|
503 | ev_stop ((struct ev_watcher *)w); |
|
|
504 | } |
|
|
505 | |
|
|
506 | void |
|
|
507 | evsignal_start (struct ev_signal *w) |
|
|
508 | { |
|
|
509 | if (ev_is_active (w)) |
|
|
510 | return; |
|
|
511 | |
|
|
512 | ev_start ((struct ev_watcher *)w, 1); |
|
|
513 | array_needsize (signals, signalmax, w->signum, signals_init); |
|
|
514 | wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w); |
|
|
515 | } |
|
|
516 | |
|
|
517 | void |
|
|
518 | evsignal_stop (struct ev_signal *w) |
|
|
519 | { |
|
|
520 | if (!ev_is_active (w)) |
|
|
521 | return; |
|
|
522 | |
|
|
523 | wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w); |
|
|
524 | ev_stop ((struct ev_watcher *)w); |
|
|
525 | } |
1287 | } |
526 | |
1288 | |
527 | /*****************************************************************************/ |
1289 | /*****************************************************************************/ |
|
|
1290 | |
528 | #if 1 |
1291 | #if 0 |
|
|
1292 | |
|
|
1293 | struct ev_io wio; |
529 | |
1294 | |
530 | static void |
1295 | static void |
531 | sin_cb (struct ev_io *w, int revents) |
1296 | sin_cb (struct ev_io *w, int revents) |
532 | { |
1297 | { |
533 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
1298 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
… | |
… | |
535 | |
1300 | |
536 | static void |
1301 | static void |
537 | ocb (struct ev_timer *w, int revents) |
1302 | ocb (struct ev_timer *w, int revents) |
538 | { |
1303 | { |
539 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
1304 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
540 | evtimer_stop (w); |
1305 | ev_timer_stop (w); |
541 | evtimer_start (w); |
1306 | ev_timer_start (w); |
|
|
1307 | } |
|
|
1308 | |
|
|
1309 | static void |
|
|
1310 | scb (struct ev_signal *w, int revents) |
|
|
1311 | { |
|
|
1312 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1313 | ev_io_stop (&wio); |
|
|
1314 | ev_io_start (&wio); |
|
|
1315 | } |
|
|
1316 | |
|
|
1317 | static void |
|
|
1318 | gcb (struct ev_signal *w, int revents) |
|
|
1319 | { |
|
|
1320 | fprintf (stderr, "generic %x\n", revents); |
|
|
1321 | |
542 | } |
1322 | } |
543 | |
1323 | |
544 | int main (void) |
1324 | int main (void) |
545 | { |
1325 | { |
546 | struct ev_io sin; |
|
|
547 | |
|
|
548 | ev_init (0); |
1326 | ev_init (0); |
549 | |
1327 | |
550 | evw_init (&sin, sin_cb, 55); |
|
|
551 | evio_set (&sin, 0, EV_READ); |
1328 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
552 | evio_start (&sin); |
1329 | ev_io_start (&wio); |
553 | |
1330 | |
554 | struct ev_timer t[10000]; |
1331 | struct ev_timer t[10000]; |
555 | |
1332 | |
556 | #if 1 |
1333 | #if 0 |
557 | int i; |
1334 | int i; |
558 | for (i = 0; i < 10000; ++i) |
1335 | for (i = 0; i < 10000; ++i) |
559 | { |
1336 | { |
560 | struct ev_timer *w = t + i; |
1337 | struct ev_timer *w = t + i; |
561 | evw_init (w, ocb, i); |
1338 | ev_watcher_init (w, ocb, i); |
562 | evtimer_set_abs (w, drand48 (), 0.99775533); |
1339 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
563 | evtimer_start (w); |
1340 | ev_timer_start (w); |
564 | if (drand48 () < 0.5) |
1341 | if (drand48 () < 0.5) |
565 | evtimer_stop (w); |
1342 | ev_timer_stop (w); |
566 | } |
1343 | } |
567 | #endif |
1344 | #endif |
568 | |
1345 | |
569 | struct ev_timer t1; |
1346 | struct ev_timer t1; |
570 | evw_init (&t1, ocb, 0); |
1347 | ev_timer_init (&t1, ocb, 5, 10); |
571 | evtimer_set_abs (&t1, 5, 10); |
|
|
572 | evtimer_start (&t1); |
1348 | ev_timer_start (&t1); |
|
|
1349 | |
|
|
1350 | struct ev_signal sig; |
|
|
1351 | ev_signal_init (&sig, scb, SIGQUIT); |
|
|
1352 | ev_signal_start (&sig); |
|
|
1353 | |
|
|
1354 | struct ev_check cw; |
|
|
1355 | ev_check_init (&cw, gcb); |
|
|
1356 | ev_check_start (&cw); |
|
|
1357 | |
|
|
1358 | struct ev_idle iw; |
|
|
1359 | ev_idle_init (&iw, gcb); |
|
|
1360 | ev_idle_start (&iw); |
573 | |
1361 | |
574 | ev_loop (0); |
1362 | ev_loop (0); |
575 | |
1363 | |
576 | return 0; |
1364 | return 0; |
577 | } |
1365 | } |