1 | /* |
1 | /* |
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2 | * libev event processing core, watcher management |
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3 | * |
2 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
3 | * All rights reserved. |
5 | * All rights reserved. |
4 | * |
6 | * |
5 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions are |
8 | * modification, are permitted provided that the following conditions are |
… | |
… | |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
30 | */ |
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31 | #ifndef EV_STANDALONE |
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32 | # include "config.h" |
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33 | |
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34 | # if HAVE_CLOCK_GETTIME |
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35 | # define EV_USE_MONOTONIC 1 |
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36 | # define EV_USE_REALTIME 1 |
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37 | # endif |
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38 | |
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39 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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40 | # define EV_USE_SELECT 1 |
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41 | # endif |
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42 | |
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43 | # if HAVE_POLL && HAVE_POLL_H |
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44 | # define EV_USE_POLL 1 |
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45 | # endif |
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46 | |
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47 | # if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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48 | # define EV_USE_EPOLL 1 |
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49 | # endif |
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50 | |
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51 | # if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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52 | # define EV_USE_KQUEUE 1 |
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53 | # endif |
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54 | |
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55 | #endif |
29 | |
56 | |
30 | #include <math.h> |
57 | #include <math.h> |
31 | #include <stdlib.h> |
58 | #include <stdlib.h> |
32 | #include <unistd.h> |
59 | #include <unistd.h> |
33 | #include <fcntl.h> |
60 | #include <fcntl.h> |
… | |
… | |
37 | #include <stdio.h> |
64 | #include <stdio.h> |
38 | |
65 | |
39 | #include <assert.h> |
66 | #include <assert.h> |
40 | #include <errno.h> |
67 | #include <errno.h> |
41 | #include <sys/types.h> |
68 | #include <sys/types.h> |
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69 | #ifndef WIN32 |
42 | #include <sys/wait.h> |
70 | # include <sys/wait.h> |
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71 | #endif |
43 | #include <sys/time.h> |
72 | #include <sys/time.h> |
44 | #include <time.h> |
73 | #include <time.h> |
45 | |
74 | |
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75 | /**/ |
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76 | |
46 | #ifndef HAVE_MONOTONIC |
77 | #ifndef EV_USE_MONOTONIC |
47 | # ifdef CLOCK_MONOTONIC |
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48 | # define HAVE_MONOTONIC 1 |
78 | # define EV_USE_MONOTONIC 1 |
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79 | #endif |
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80 | |
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81 | #ifndef EV_USE_SELECT |
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82 | # define EV_USE_SELECT 1 |
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83 | #endif |
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84 | |
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85 | #ifndef EV_USE_POLL |
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86 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
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87 | #endif |
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88 | |
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89 | #ifndef EV_USE_EPOLL |
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90 | # define EV_USE_EPOLL 0 |
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91 | #endif |
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92 | |
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93 | #ifndef EV_USE_KQUEUE |
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94 | # define EV_USE_KQUEUE 0 |
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95 | #endif |
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96 | |
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97 | #ifndef EV_USE_WIN32 |
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98 | # ifdef WIN32 |
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99 | # define EV_USE_WIN32 1 |
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100 | # else |
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101 | # define EV_USE_WIN32 0 |
49 | # endif |
102 | # endif |
50 | #endif |
103 | #endif |
51 | |
104 | |
52 | #ifndef HAVE_SELECT |
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53 | # define HAVE_SELECT 1 |
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54 | #endif |
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55 | |
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56 | #ifndef HAVE_EPOLL |
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57 | # define HAVE_EPOLL 0 |
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58 | #endif |
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59 | |
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60 | #ifndef HAVE_REALTIME |
105 | #ifndef EV_USE_REALTIME |
61 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
106 | # define EV_USE_REALTIME 1 |
62 | #endif |
107 | #endif |
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108 | |
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109 | /**/ |
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110 | |
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111 | #ifndef CLOCK_MONOTONIC |
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112 | # undef EV_USE_MONOTONIC |
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113 | # define EV_USE_MONOTONIC 0 |
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114 | #endif |
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115 | |
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116 | #ifndef CLOCK_REALTIME |
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117 | # undef EV_USE_REALTIME |
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118 | # define EV_USE_REALTIME 0 |
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119 | #endif |
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120 | |
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121 | /**/ |
63 | |
122 | |
64 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
123 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
65 | #define MAX_BLOCKTIME 60. |
124 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
66 | #define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */ |
125 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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126 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
67 | |
127 | |
68 | #include "ev.h" |
128 | #include "ev.h" |
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129 | |
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130 | #if __GNUC__ >= 3 |
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131 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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132 | # define inline inline |
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133 | #else |
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134 | # define expect(expr,value) (expr) |
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135 | # define inline static |
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136 | #endif |
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137 | |
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138 | #define expect_false(expr) expect ((expr) != 0, 0) |
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139 | #define expect_true(expr) expect ((expr) != 0, 1) |
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140 | |
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141 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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142 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
69 | |
143 | |
70 | typedef struct ev_watcher *W; |
144 | typedef struct ev_watcher *W; |
71 | typedef struct ev_watcher_list *WL; |
145 | typedef struct ev_watcher_list *WL; |
72 | typedef struct ev_watcher_time *WT; |
146 | typedef struct ev_watcher_time *WT; |
73 | |
147 | |
74 | static ev_tstamp now, diff; /* monotonic clock */ |
148 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
75 | ev_tstamp ev_now; |
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76 | int ev_method; |
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77 | |
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78 | static int have_monotonic; /* runtime */ |
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79 | |
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80 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
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81 | static void (*method_modify)(int fd, int oev, int nev); |
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82 | static void (*method_poll)(ev_tstamp timeout); |
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83 | |
149 | |
84 | /*****************************************************************************/ |
150 | /*****************************************************************************/ |
85 | |
151 | |
86 | ev_tstamp |
152 | typedef struct |
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153 | { |
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154 | struct ev_watcher_list *head; |
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155 | unsigned char events; |
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156 | unsigned char reify; |
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157 | } ANFD; |
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158 | |
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159 | typedef struct |
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160 | { |
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161 | W w; |
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162 | int events; |
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163 | } ANPENDING; |
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164 | |
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165 | #if EV_MULTIPLICITY |
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166 | |
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167 | struct ev_loop |
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168 | { |
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169 | # define VAR(name,decl) decl; |
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170 | # include "ev_vars.h" |
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171 | }; |
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172 | # undef VAR |
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173 | # include "ev_wrap.h" |
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174 | |
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175 | #else |
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176 | |
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177 | # define VAR(name,decl) static decl; |
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178 | # include "ev_vars.h" |
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179 | # undef VAR |
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180 | |
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181 | #endif |
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182 | |
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183 | /*****************************************************************************/ |
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184 | |
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185 | inline ev_tstamp |
87 | ev_time (void) |
186 | ev_time (void) |
88 | { |
187 | { |
89 | #if HAVE_REALTIME |
188 | #if EV_USE_REALTIME |
90 | struct timespec ts; |
189 | struct timespec ts; |
91 | clock_gettime (CLOCK_REALTIME, &ts); |
190 | clock_gettime (CLOCK_REALTIME, &ts); |
92 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
191 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
93 | #else |
192 | #else |
94 | struct timeval tv; |
193 | struct timeval tv; |
95 | gettimeofday (&tv, 0); |
194 | gettimeofday (&tv, 0); |
96 | return tv.tv_sec + tv.tv_usec * 1e-6; |
195 | return tv.tv_sec + tv.tv_usec * 1e-6; |
97 | #endif |
196 | #endif |
98 | } |
197 | } |
99 | |
198 | |
100 | static ev_tstamp |
199 | inline ev_tstamp |
101 | get_clock (void) |
200 | get_clock (void) |
102 | { |
201 | { |
103 | #if HAVE_MONOTONIC |
202 | #if EV_USE_MONOTONIC |
104 | if (have_monotonic) |
203 | if (expect_true (have_monotonic)) |
105 | { |
204 | { |
106 | struct timespec ts; |
205 | struct timespec ts; |
107 | clock_gettime (CLOCK_MONOTONIC, &ts); |
206 | clock_gettime (CLOCK_MONOTONIC, &ts); |
108 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
207 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
109 | } |
208 | } |
110 | #endif |
209 | #endif |
111 | |
210 | |
112 | return ev_time (); |
211 | return ev_time (); |
113 | } |
212 | } |
114 | |
213 | |
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214 | ev_tstamp |
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215 | ev_now (EV_P) |
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216 | { |
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217 | return rt_now; |
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218 | } |
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219 | |
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220 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
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221 | |
115 | #define array_needsize(base,cur,cnt,init) \ |
222 | #define array_needsize(base,cur,cnt,init) \ |
116 | if ((cnt) > cur) \ |
223 | if (expect_false ((cnt) > cur)) \ |
117 | { \ |
224 | { \ |
118 | int newcnt = cur ? cur << 1 : 16; \ |
225 | int newcnt = cur; \ |
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226 | do \ |
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227 | { \ |
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228 | newcnt = array_roundsize (base, newcnt << 1); \ |
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229 | } \ |
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230 | while ((cnt) > newcnt); \ |
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231 | \ |
119 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
232 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
120 | init (base + cur, newcnt - cur); \ |
233 | init (base + cur, newcnt - cur); \ |
121 | cur = newcnt; \ |
234 | cur = newcnt; \ |
122 | } |
235 | } |
123 | |
236 | |
124 | /*****************************************************************************/ |
237 | /*****************************************************************************/ |
125 | |
238 | |
126 | typedef struct |
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127 | { |
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128 | struct ev_io *head; |
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129 | unsigned char wev, rev; /* want, received event set */ |
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130 | } ANFD; |
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131 | |
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132 | static ANFD *anfds; |
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133 | static int anfdmax; |
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134 | |
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135 | static int *fdchanges; |
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136 | static int fdchangemax, fdchangecnt; |
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137 | |
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138 | static void |
239 | static void |
139 | anfds_init (ANFD *base, int count) |
240 | anfds_init (ANFD *base, int count) |
140 | { |
241 | { |
141 | while (count--) |
242 | while (count--) |
142 | { |
243 | { |
143 | base->head = 0; |
244 | base->head = 0; |
144 | base->wev = base->rev = EV_NONE; |
245 | base->events = EV_NONE; |
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246 | base->reify = 0; |
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247 | |
145 | ++base; |
248 | ++base; |
146 | } |
249 | } |
147 | } |
250 | } |
148 | |
251 | |
149 | typedef struct |
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150 | { |
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151 | W w; |
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152 | int events; |
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153 | } ANPENDING; |
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154 | |
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155 | static ANPENDING *pendings; |
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156 | static int pendingmax, pendingcnt; |
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157 | |
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158 | static void |
252 | static void |
159 | event (W w, int events) |
253 | event (EV_P_ W w, int events) |
160 | { |
254 | { |
161 | if (w->active) |
255 | if (w->pending) |
162 | { |
256 | { |
163 | w->pending = ++pendingcnt; |
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164 | array_needsize (pendings, pendingmax, pendingcnt, ); |
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165 | pendings [pendingcnt - 1].w = w; |
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166 | pendings [pendingcnt - 1].events = events; |
257 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
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258 | return; |
167 | } |
259 | } |
168 | } |
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169 | |
260 | |
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261 | w->pending = ++pendingcnt [ABSPRI (w)]; |
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262 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
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263 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
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264 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
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265 | } |
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266 | |
170 | static void |
267 | static void |
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268 | queue_events (EV_P_ W *events, int eventcnt, int type) |
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269 | { |
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270 | int i; |
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271 | |
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272 | for (i = 0; i < eventcnt; ++i) |
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273 | event (EV_A_ events [i], type); |
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274 | } |
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275 | |
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276 | static void |
171 | fd_event (int fd, int events) |
277 | fd_event (EV_P_ int fd, int events) |
172 | { |
278 | { |
173 | ANFD *anfd = anfds + fd; |
279 | ANFD *anfd = anfds + fd; |
174 | struct ev_io *w; |
280 | struct ev_io *w; |
175 | |
281 | |
176 | for (w = anfd->head; w; w = w->next) |
282 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
177 | { |
283 | { |
178 | int ev = w->events & events; |
284 | int ev = w->events & events; |
179 | |
285 | |
180 | if (ev) |
286 | if (ev) |
181 | event ((W)w, ev); |
287 | event (EV_A_ (W)w, ev); |
182 | } |
288 | } |
183 | } |
289 | } |
184 | |
290 | |
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291 | /*****************************************************************************/ |
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292 | |
185 | static void |
293 | static void |
186 | queue_events (W *events, int eventcnt, int type) |
294 | fd_reify (EV_P) |
187 | { |
295 | { |
188 | int i; |
296 | int i; |
189 | |
297 | |
190 | for (i = 0; i < eventcnt; ++i) |
298 | for (i = 0; i < fdchangecnt; ++i) |
191 | event (events [i], type); |
299 | { |
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300 | int fd = fdchanges [i]; |
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301 | ANFD *anfd = anfds + fd; |
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302 | struct ev_io *w; |
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303 | |
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304 | int events = 0; |
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305 | |
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306 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
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307 | events |= w->events; |
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308 | |
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309 | anfd->reify = 0; |
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310 | |
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311 | if (anfd->events != events) |
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312 | { |
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313 | method_modify (EV_A_ fd, anfd->events, events); |
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314 | anfd->events = events; |
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315 | } |
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316 | } |
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317 | |
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318 | fdchangecnt = 0; |
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319 | } |
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320 | |
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321 | static void |
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322 | fd_change (EV_P_ int fd) |
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323 | { |
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324 | if (anfds [fd].reify || fdchangecnt < 0) |
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325 | return; |
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326 | |
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327 | anfds [fd].reify = 1; |
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328 | |
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329 | ++fdchangecnt; |
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330 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
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331 | fdchanges [fdchangecnt - 1] = fd; |
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332 | } |
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333 | |
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334 | static void |
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335 | fd_kill (EV_P_ int fd) |
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336 | { |
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337 | struct ev_io *w; |
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338 | |
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339 | while ((w = (struct ev_io *)anfds [fd].head)) |
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340 | { |
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341 | ev_io_stop (EV_A_ w); |
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342 | event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
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343 | } |
192 | } |
344 | } |
193 | |
345 | |
194 | /* called on EBADF to verify fds */ |
346 | /* called on EBADF to verify fds */ |
195 | static void |
347 | static void |
196 | fd_recheck () |
348 | fd_ebadf (EV_P) |
197 | { |
349 | { |
198 | int fd; |
350 | int fd; |
199 | |
351 | |
200 | for (fd = 0; fd < anfdmax; ++fd) |
352 | for (fd = 0; fd < anfdmax; ++fd) |
201 | if (anfds [fd].wev) |
353 | if (anfds [fd].events) |
202 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
354 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
203 | while (anfds [fd].head) |
355 | fd_kill (EV_A_ fd); |
204 | evio_stop (anfds [fd].head); |
356 | } |
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357 | |
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358 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
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359 | static void |
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360 | fd_enomem (EV_P) |
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361 | { |
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362 | int fd; |
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363 | |
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364 | for (fd = anfdmax; fd--; ) |
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365 | if (anfds [fd].events) |
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366 | { |
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367 | close (fd); |
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368 | fd_kill (EV_A_ fd); |
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369 | return; |
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370 | } |
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371 | } |
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372 | |
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373 | /* susually called after fork if method needs to re-arm all fds from scratch */ |
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374 | static void |
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375 | fd_rearm_all (EV_P) |
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376 | { |
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377 | int fd; |
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378 | |
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379 | /* this should be highly optimised to not do anything but set a flag */ |
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380 | for (fd = 0; fd < anfdmax; ++fd) |
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381 | if (anfds [fd].events) |
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382 | { |
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383 | anfds [fd].events = 0; |
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384 | fd_change (EV_A_ fd); |
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385 | } |
205 | } |
386 | } |
206 | |
387 | |
207 | /*****************************************************************************/ |
388 | /*****************************************************************************/ |
208 | |
389 | |
209 | static struct ev_timer **timers; |
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210 | static int timermax, timercnt; |
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211 | |
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212 | static struct ev_periodic **periodics; |
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213 | static int periodicmax, periodiccnt; |
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214 | |
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215 | static void |
390 | static void |
216 | upheap (WT *timers, int k) |
391 | upheap (WT *heap, int k) |
217 | { |
392 | { |
218 | WT w = timers [k]; |
393 | WT w = heap [k]; |
219 | |
394 | |
220 | while (k && timers [k >> 1]->at > w->at) |
395 | while (k && heap [k >> 1]->at > w->at) |
221 | { |
396 | { |
222 | timers [k] = timers [k >> 1]; |
397 | heap [k] = heap [k >> 1]; |
223 | timers [k]->active = k + 1; |
398 | ((W)heap [k])->active = k + 1; |
224 | k >>= 1; |
399 | k >>= 1; |
225 | } |
400 | } |
226 | |
401 | |
227 | timers [k] = w; |
402 | heap [k] = w; |
228 | timers [k]->active = k + 1; |
403 | ((W)heap [k])->active = k + 1; |
229 | |
404 | |
230 | } |
405 | } |
231 | |
406 | |
232 | static void |
407 | static void |
233 | downheap (WT *timers, int N, int k) |
408 | downheap (WT *heap, int N, int k) |
234 | { |
409 | { |
235 | WT w = timers [k]; |
410 | WT w = heap [k]; |
236 | |
411 | |
237 | while (k < (N >> 1)) |
412 | while (k < (N >> 1)) |
238 | { |
413 | { |
239 | int j = k << 1; |
414 | int j = k << 1; |
240 | |
415 | |
241 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
416 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
242 | ++j; |
417 | ++j; |
243 | |
418 | |
244 | if (w->at <= timers [j]->at) |
419 | if (w->at <= heap [j]->at) |
245 | break; |
420 | break; |
246 | |
421 | |
247 | timers [k] = timers [j]; |
422 | heap [k] = heap [j]; |
248 | timers [k]->active = k + 1; |
423 | ((W)heap [k])->active = k + 1; |
249 | k = j; |
424 | k = j; |
250 | } |
425 | } |
251 | |
426 | |
252 | timers [k] = w; |
427 | heap [k] = w; |
253 | timers [k]->active = k + 1; |
428 | ((W)heap [k])->active = k + 1; |
254 | } |
429 | } |
255 | |
430 | |
256 | /*****************************************************************************/ |
431 | /*****************************************************************************/ |
257 | |
432 | |
258 | typedef struct |
433 | typedef struct |
259 | { |
434 | { |
260 | struct ev_signal *head; |
435 | struct ev_watcher_list *head; |
261 | sig_atomic_t gotsig; |
436 | sig_atomic_t volatile gotsig; |
262 | } ANSIG; |
437 | } ANSIG; |
263 | |
438 | |
264 | static ANSIG *signals; |
439 | static ANSIG *signals; |
265 | static int signalmax; |
440 | static int signalmax; |
266 | |
441 | |
267 | static int sigpipe [2]; |
442 | static int sigpipe [2]; |
268 | static sig_atomic_t gotsig; |
443 | static sig_atomic_t volatile gotsig; |
269 | static struct ev_io sigev; |
444 | static struct ev_io sigev; |
270 | |
445 | |
271 | static void |
446 | static void |
272 | signals_init (ANSIG *base, int count) |
447 | signals_init (ANSIG *base, int count) |
273 | { |
448 | { |
274 | while (count--) |
449 | while (count--) |
275 | { |
450 | { |
276 | base->head = 0; |
451 | base->head = 0; |
277 | base->gotsig = 0; |
452 | base->gotsig = 0; |
|
|
453 | |
278 | ++base; |
454 | ++base; |
279 | } |
455 | } |
280 | } |
456 | } |
281 | |
457 | |
282 | static void |
458 | static void |
… | |
… | |
284 | { |
460 | { |
285 | signals [signum - 1].gotsig = 1; |
461 | signals [signum - 1].gotsig = 1; |
286 | |
462 | |
287 | if (!gotsig) |
463 | if (!gotsig) |
288 | { |
464 | { |
|
|
465 | int old_errno = errno; |
289 | gotsig = 1; |
466 | gotsig = 1; |
290 | write (sigpipe [1], &gotsig, 1); |
467 | write (sigpipe [1], &signum, 1); |
|
|
468 | errno = old_errno; |
291 | } |
469 | } |
292 | } |
470 | } |
293 | |
471 | |
294 | static void |
472 | static void |
295 | sigcb (struct ev_io *iow, int revents) |
473 | sigcb (EV_P_ struct ev_io *iow, int revents) |
296 | { |
474 | { |
297 | struct ev_signal *w; |
475 | struct ev_watcher_list *w; |
298 | int sig; |
476 | int signum; |
299 | |
477 | |
|
|
478 | read (sigpipe [0], &revents, 1); |
300 | gotsig = 0; |
479 | gotsig = 0; |
301 | read (sigpipe [0], &revents, 1); |
|
|
302 | |
480 | |
303 | for (sig = signalmax; sig--; ) |
481 | for (signum = signalmax; signum--; ) |
304 | if (signals [sig].gotsig) |
482 | if (signals [signum].gotsig) |
305 | { |
483 | { |
306 | signals [sig].gotsig = 0; |
484 | signals [signum].gotsig = 0; |
307 | |
485 | |
308 | for (w = signals [sig].head; w; w = w->next) |
486 | for (w = signals [signum].head; w; w = w->next) |
309 | event ((W)w, EV_SIGNAL); |
487 | event (EV_A_ (W)w, EV_SIGNAL); |
310 | } |
488 | } |
311 | } |
489 | } |
312 | |
490 | |
313 | static void |
491 | static void |
314 | siginit (void) |
492 | siginit (EV_P) |
315 | { |
493 | { |
|
|
494 | #ifndef WIN32 |
316 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
495 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
317 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
496 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
318 | |
497 | |
319 | /* rather than sort out wether we really need nb, set it */ |
498 | /* rather than sort out wether we really need nb, set it */ |
320 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
499 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
321 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
500 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
501 | #endif |
322 | |
502 | |
323 | evio_set (&sigev, sigpipe [0], EV_READ); |
503 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
324 | evio_start (&sigev); |
504 | ev_io_start (EV_A_ &sigev); |
|
|
505 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
325 | } |
506 | } |
326 | |
507 | |
327 | /*****************************************************************************/ |
508 | /*****************************************************************************/ |
328 | |
509 | |
329 | static struct ev_idle **idles; |
510 | #ifndef WIN32 |
330 | static int idlemax, idlecnt; |
|
|
331 | |
|
|
332 | static struct ev_prepare **prepares; |
|
|
333 | static int preparemax, preparecnt; |
|
|
334 | |
|
|
335 | static struct ev_check **checks; |
|
|
336 | static int checkmax, checkcnt; |
|
|
337 | |
|
|
338 | /*****************************************************************************/ |
|
|
339 | |
511 | |
340 | static struct ev_child *childs [PID_HASHSIZE]; |
512 | static struct ev_child *childs [PID_HASHSIZE]; |
341 | static struct ev_signal childev; |
513 | static struct ev_signal childev; |
342 | |
514 | |
343 | #ifndef WCONTINUED |
515 | #ifndef WCONTINUED |
344 | # define WCONTINUED 0 |
516 | # define WCONTINUED 0 |
345 | #endif |
517 | #endif |
346 | |
518 | |
347 | static void |
519 | static void |
348 | childcb (struct ev_signal *sw, int revents) |
520 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
349 | { |
521 | { |
350 | struct ev_child *w; |
522 | struct ev_child *w; |
|
|
523 | |
|
|
524 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
525 | if (w->pid == pid || !w->pid) |
|
|
526 | { |
|
|
527 | w->priority = sw->priority; /* need to do it *now* */ |
|
|
528 | w->rpid = pid; |
|
|
529 | w->rstatus = status; |
|
|
530 | event (EV_A_ (W)w, EV_CHILD); |
|
|
531 | } |
|
|
532 | } |
|
|
533 | |
|
|
534 | static void |
|
|
535 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
536 | { |
351 | int pid, status; |
537 | int pid, status; |
352 | |
538 | |
353 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
539 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
354 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
540 | { |
355 | if (w->pid == pid || w->pid == -1) |
541 | /* make sure we are called again until all childs have been reaped */ |
|
|
542 | event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
543 | |
|
|
544 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
545 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
546 | } |
|
|
547 | } |
|
|
548 | |
|
|
549 | #endif |
|
|
550 | |
|
|
551 | /*****************************************************************************/ |
|
|
552 | |
|
|
553 | #if EV_USE_KQUEUE |
|
|
554 | # include "ev_kqueue.c" |
|
|
555 | #endif |
|
|
556 | #if EV_USE_EPOLL |
|
|
557 | # include "ev_epoll.c" |
|
|
558 | #endif |
|
|
559 | #if EV_USE_POLL |
|
|
560 | # include "ev_poll.c" |
|
|
561 | #endif |
|
|
562 | #if EV_USE_SELECT |
|
|
563 | # include "ev_select.c" |
|
|
564 | #endif |
|
|
565 | |
|
|
566 | int |
|
|
567 | ev_version_major (void) |
|
|
568 | { |
|
|
569 | return EV_VERSION_MAJOR; |
|
|
570 | } |
|
|
571 | |
|
|
572 | int |
|
|
573 | ev_version_minor (void) |
|
|
574 | { |
|
|
575 | return EV_VERSION_MINOR; |
|
|
576 | } |
|
|
577 | |
|
|
578 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
579 | static int |
|
|
580 | enable_secure (void) |
|
|
581 | { |
|
|
582 | #ifdef WIN32 |
|
|
583 | return 0; |
|
|
584 | #else |
|
|
585 | return getuid () != geteuid () |
|
|
586 | || getgid () != getegid (); |
|
|
587 | #endif |
|
|
588 | } |
|
|
589 | |
|
|
590 | int |
|
|
591 | ev_method (EV_P) |
|
|
592 | { |
|
|
593 | return method; |
|
|
594 | } |
|
|
595 | |
|
|
596 | static void |
|
|
597 | loop_init (EV_P_ int methods) |
|
|
598 | { |
|
|
599 | if (!method) |
|
|
600 | { |
|
|
601 | #if EV_USE_MONOTONIC |
|
|
602 | { |
|
|
603 | struct timespec ts; |
|
|
604 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
605 | have_monotonic = 1; |
|
|
606 | } |
|
|
607 | #endif |
|
|
608 | |
|
|
609 | rt_now = ev_time (); |
|
|
610 | mn_now = get_clock (); |
|
|
611 | now_floor = mn_now; |
|
|
612 | rtmn_diff = rt_now - mn_now; |
|
|
613 | |
|
|
614 | if (methods == EVMETHOD_AUTO) |
|
|
615 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
616 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
617 | else |
|
|
618 | methods = EVMETHOD_ANY; |
|
|
619 | |
|
|
620 | method = 0; |
|
|
621 | #if EV_USE_WIN32 |
|
|
622 | if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); |
|
|
623 | #endif |
|
|
624 | #if EV_USE_KQUEUE |
|
|
625 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
626 | #endif |
|
|
627 | #if EV_USE_EPOLL |
|
|
628 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
629 | #endif |
|
|
630 | #if EV_USE_POLL |
|
|
631 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
632 | #endif |
|
|
633 | #if EV_USE_SELECT |
|
|
634 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
|
|
635 | #endif |
|
|
636 | } |
|
|
637 | } |
|
|
638 | |
|
|
639 | void |
|
|
640 | loop_destroy (EV_P) |
|
|
641 | { |
|
|
642 | #if EV_USE_WIN32 |
|
|
643 | if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); |
|
|
644 | #endif |
|
|
645 | #if EV_USE_KQUEUE |
|
|
646 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
647 | #endif |
|
|
648 | #if EV_USE_EPOLL |
|
|
649 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
650 | #endif |
|
|
651 | #if EV_USE_POLL |
|
|
652 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
653 | #endif |
|
|
654 | #if EV_USE_SELECT |
|
|
655 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
656 | #endif |
|
|
657 | |
|
|
658 | method = 0; |
|
|
659 | /*TODO*/ |
|
|
660 | } |
|
|
661 | |
|
|
662 | void |
|
|
663 | loop_fork (EV_P) |
|
|
664 | { |
|
|
665 | /*TODO*/ |
|
|
666 | #if EV_USE_EPOLL |
|
|
667 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
668 | #endif |
|
|
669 | #if EV_USE_KQUEUE |
|
|
670 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
671 | #endif |
|
|
672 | } |
|
|
673 | |
|
|
674 | #if EV_MULTIPLICITY |
|
|
675 | struct ev_loop * |
|
|
676 | ev_loop_new (int methods) |
|
|
677 | { |
|
|
678 | struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); |
|
|
679 | |
|
|
680 | loop_init (EV_A_ methods); |
|
|
681 | |
|
|
682 | if (ev_method (EV_A)) |
|
|
683 | return loop; |
|
|
684 | |
|
|
685 | return 0; |
|
|
686 | } |
|
|
687 | |
|
|
688 | void |
|
|
689 | ev_loop_destroy (EV_P) |
|
|
690 | { |
|
|
691 | loop_destroy (EV_A); |
|
|
692 | free (loop); |
|
|
693 | } |
|
|
694 | |
|
|
695 | void |
|
|
696 | ev_loop_fork (EV_P) |
|
|
697 | { |
|
|
698 | loop_fork (EV_A); |
|
|
699 | } |
|
|
700 | |
|
|
701 | #endif |
|
|
702 | |
|
|
703 | #if EV_MULTIPLICITY |
|
|
704 | struct ev_loop default_loop_struct; |
|
|
705 | static struct ev_loop *default_loop; |
|
|
706 | |
|
|
707 | struct ev_loop * |
|
|
708 | #else |
|
|
709 | static int default_loop; |
|
|
710 | |
|
|
711 | int |
|
|
712 | #endif |
|
|
713 | ev_default_loop (int methods) |
|
|
714 | { |
|
|
715 | if (sigpipe [0] == sigpipe [1]) |
|
|
716 | if (pipe (sigpipe)) |
|
|
717 | return 0; |
|
|
718 | |
|
|
719 | if (!default_loop) |
|
|
720 | { |
|
|
721 | #if EV_MULTIPLICITY |
|
|
722 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
723 | #else |
|
|
724 | default_loop = 1; |
|
|
725 | #endif |
|
|
726 | |
|
|
727 | loop_init (EV_A_ methods); |
|
|
728 | |
|
|
729 | if (ev_method (EV_A)) |
356 | { |
730 | { |
357 | w->status = status; |
731 | ev_watcher_init (&sigev, sigcb); |
358 | event ((W)w, EV_CHILD); |
732 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
733 | siginit (EV_A); |
|
|
734 | |
|
|
735 | #ifndef WIN32 |
|
|
736 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
737 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
738 | ev_signal_start (EV_A_ &childev); |
|
|
739 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
740 | #endif |
359 | } |
741 | } |
360 | } |
742 | else |
361 | |
743 | default_loop = 0; |
362 | /*****************************************************************************/ |
|
|
363 | |
|
|
364 | #if HAVE_EPOLL |
|
|
365 | # include "ev_epoll.c" |
|
|
366 | #endif |
|
|
367 | #if HAVE_SELECT |
|
|
368 | # include "ev_select.c" |
|
|
369 | #endif |
|
|
370 | |
|
|
371 | int ev_init (int flags) |
|
|
372 | { |
|
|
373 | #if HAVE_MONOTONIC |
|
|
374 | { |
|
|
375 | struct timespec ts; |
|
|
376 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
377 | have_monotonic = 1; |
|
|
378 | } |
|
|
379 | #endif |
|
|
380 | |
|
|
381 | ev_now = ev_time (); |
|
|
382 | now = get_clock (); |
|
|
383 | diff = ev_now - now; |
|
|
384 | |
|
|
385 | if (pipe (sigpipe)) |
|
|
386 | return 0; |
|
|
387 | |
|
|
388 | ev_method = EVMETHOD_NONE; |
|
|
389 | #if HAVE_EPOLL |
|
|
390 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
391 | #endif |
|
|
392 | #if HAVE_SELECT |
|
|
393 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
394 | #endif |
|
|
395 | |
|
|
396 | if (ev_method) |
|
|
397 | { |
744 | } |
398 | evw_init (&sigev, sigcb); |
|
|
399 | siginit (); |
|
|
400 | |
745 | |
401 | evsignal_init (&childev, childcb, SIGCHLD); |
746 | return default_loop; |
|
|
747 | } |
|
|
748 | |
|
|
749 | void |
|
|
750 | ev_default_destroy (void) |
|
|
751 | { |
|
|
752 | #if EV_MULTIPLICITY |
|
|
753 | struct ev_loop *loop = default_loop; |
|
|
754 | #endif |
|
|
755 | |
|
|
756 | ev_ref (EV_A); /* child watcher */ |
402 | evsignal_start (&childev); |
757 | ev_signal_stop (EV_A_ &childev); |
403 | } |
|
|
404 | |
758 | |
405 | return ev_method; |
759 | ev_ref (EV_A); /* signal watcher */ |
406 | } |
|
|
407 | |
|
|
408 | /*****************************************************************************/ |
|
|
409 | |
|
|
410 | void ev_prefork (void) |
|
|
411 | { |
|
|
412 | /* nop */ |
|
|
413 | } |
|
|
414 | |
|
|
415 | void ev_postfork_parent (void) |
|
|
416 | { |
|
|
417 | /* nop */ |
|
|
418 | } |
|
|
419 | |
|
|
420 | void ev_postfork_child (void) |
|
|
421 | { |
|
|
422 | #if HAVE_EPOLL |
|
|
423 | if (ev_method == EVMETHOD_EPOLL) |
|
|
424 | epoll_postfork_child (); |
|
|
425 | #endif |
|
|
426 | |
|
|
427 | evio_stop (&sigev); |
760 | ev_io_stop (EV_A_ &sigev); |
|
|
761 | |
|
|
762 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
763 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
764 | |
|
|
765 | loop_destroy (EV_A); |
|
|
766 | } |
|
|
767 | |
|
|
768 | void |
|
|
769 | ev_default_fork (void) |
|
|
770 | { |
|
|
771 | #if EV_MULTIPLICITY |
|
|
772 | struct ev_loop *loop = default_loop; |
|
|
773 | #endif |
|
|
774 | |
|
|
775 | loop_fork (EV_A); |
|
|
776 | |
|
|
777 | ev_io_stop (EV_A_ &sigev); |
428 | close (sigpipe [0]); |
778 | close (sigpipe [0]); |
429 | close (sigpipe [1]); |
779 | close (sigpipe [1]); |
430 | pipe (sigpipe); |
780 | pipe (sigpipe); |
|
|
781 | |
|
|
782 | ev_ref (EV_A); /* signal watcher */ |
431 | siginit (); |
783 | siginit (EV_A); |
432 | } |
784 | } |
433 | |
785 | |
434 | /*****************************************************************************/ |
786 | /*****************************************************************************/ |
435 | |
787 | |
436 | static void |
788 | static void |
437 | fd_reify (void) |
789 | call_pending (EV_P) |
438 | { |
790 | { |
439 | int i; |
791 | int pri; |
440 | |
792 | |
441 | for (i = 0; i < fdchangecnt; ++i) |
793 | for (pri = NUMPRI; pri--; ) |
442 | { |
794 | while (pendingcnt [pri]) |
443 | int fd = fdchanges [i]; |
|
|
444 | ANFD *anfd = anfds + fd; |
|
|
445 | struct ev_io *w; |
|
|
446 | |
|
|
447 | int wev = 0; |
|
|
448 | |
|
|
449 | for (w = anfd->head; w; w = w->next) |
|
|
450 | wev |= w->events; |
|
|
451 | |
|
|
452 | if (anfd->wev != wev) |
|
|
453 | { |
795 | { |
454 | method_modify (fd, anfd->wev, wev); |
|
|
455 | anfd->wev = wev; |
|
|
456 | } |
|
|
457 | } |
|
|
458 | |
|
|
459 | fdchangecnt = 0; |
|
|
460 | } |
|
|
461 | |
|
|
462 | static void |
|
|
463 | call_pending () |
|
|
464 | { |
|
|
465 | while (pendingcnt) |
|
|
466 | { |
|
|
467 | ANPENDING *p = pendings + --pendingcnt; |
796 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
468 | |
797 | |
469 | if (p->w) |
798 | if (p->w) |
470 | { |
799 | { |
471 | p->w->pending = 0; |
800 | p->w->pending = 0; |
472 | p->w->cb (p->w, p->events); |
801 | p->w->cb (EV_A_ p->w, p->events); |
473 | } |
802 | } |
474 | } |
803 | } |
475 | } |
804 | } |
476 | |
805 | |
477 | static void |
806 | static void |
478 | timers_reify () |
807 | timers_reify (EV_P) |
479 | { |
808 | { |
480 | while (timercnt && timers [0]->at <= now) |
809 | while (timercnt && timers [0]->at <= mn_now) |
481 | { |
810 | { |
482 | struct ev_timer *w = timers [0]; |
811 | struct ev_timer *w = timers [0]; |
483 | |
812 | |
484 | event ((W)w, EV_TIMEOUT); |
813 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
485 | |
814 | |
486 | /* first reschedule or stop timer */ |
815 | /* first reschedule or stop timer */ |
487 | if (w->repeat) |
816 | if (w->repeat) |
488 | { |
817 | { |
|
|
818 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
489 | w->at = now + w->repeat; |
819 | w->at = mn_now + w->repeat; |
490 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
|
|
491 | downheap ((WT *)timers, timercnt, 0); |
820 | downheap ((WT *)timers, timercnt, 0); |
492 | } |
821 | } |
493 | else |
822 | else |
494 | evtimer_stop (w); /* nonrepeating: stop timer */ |
823 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
495 | } |
|
|
496 | } |
|
|
497 | |
824 | |
|
|
825 | event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
826 | } |
|
|
827 | } |
|
|
828 | |
498 | static void |
829 | static void |
499 | periodics_reify () |
830 | periodics_reify (EV_P) |
500 | { |
831 | { |
501 | while (periodiccnt && periodics [0]->at <= ev_now) |
832 | while (periodiccnt && periodics [0]->at <= rt_now) |
502 | { |
833 | { |
503 | struct ev_periodic *w = periodics [0]; |
834 | struct ev_periodic *w = periodics [0]; |
|
|
835 | |
|
|
836 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
504 | |
837 | |
505 | /* first reschedule or stop timer */ |
838 | /* first reschedule or stop timer */ |
506 | if (w->interval) |
839 | if (w->interval) |
507 | { |
840 | { |
508 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
841 | w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; |
509 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
842 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); |
510 | downheap ((WT *)periodics, periodiccnt, 0); |
843 | downheap ((WT *)periodics, periodiccnt, 0); |
511 | } |
844 | } |
512 | else |
845 | else |
513 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
846 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
514 | |
847 | |
515 | event ((W)w, EV_TIMEOUT); |
848 | event (EV_A_ (W)w, EV_PERIODIC); |
516 | } |
849 | } |
517 | } |
850 | } |
518 | |
851 | |
519 | static void |
852 | static void |
520 | periodics_reschedule (ev_tstamp diff) |
853 | periodics_reschedule (EV_P) |
521 | { |
854 | { |
522 | int i; |
855 | int i; |
523 | |
856 | |
524 | /* adjust periodics after time jump */ |
857 | /* adjust periodics after time jump */ |
525 | for (i = 0; i < periodiccnt; ++i) |
858 | for (i = 0; i < periodiccnt; ++i) |
526 | { |
859 | { |
527 | struct ev_periodic *w = periodics [i]; |
860 | struct ev_periodic *w = periodics [i]; |
528 | |
861 | |
529 | if (w->interval) |
862 | if (w->interval) |
530 | { |
863 | { |
531 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
864 | ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; |
532 | |
865 | |
533 | if (fabs (diff) >= 1e-4) |
866 | if (fabs (diff) >= 1e-4) |
534 | { |
867 | { |
535 | evperiodic_stop (w); |
868 | ev_periodic_stop (EV_A_ w); |
536 | evperiodic_start (w); |
869 | ev_periodic_start (EV_A_ w); |
537 | |
870 | |
538 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
871 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
539 | } |
872 | } |
540 | } |
873 | } |
541 | } |
874 | } |
542 | } |
875 | } |
543 | |
876 | |
|
|
877 | inline int |
|
|
878 | time_update_monotonic (EV_P) |
|
|
879 | { |
|
|
880 | mn_now = get_clock (); |
|
|
881 | |
|
|
882 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
883 | { |
|
|
884 | rt_now = rtmn_diff + mn_now; |
|
|
885 | return 0; |
|
|
886 | } |
|
|
887 | else |
|
|
888 | { |
|
|
889 | now_floor = mn_now; |
|
|
890 | rt_now = ev_time (); |
|
|
891 | return 1; |
|
|
892 | } |
|
|
893 | } |
|
|
894 | |
544 | static void |
895 | static void |
545 | time_update () |
896 | time_update (EV_P) |
546 | { |
897 | { |
547 | int i; |
898 | int i; |
548 | |
899 | |
549 | ev_now = ev_time (); |
900 | #if EV_USE_MONOTONIC |
550 | |
|
|
551 | if (have_monotonic) |
901 | if (expect_true (have_monotonic)) |
552 | { |
902 | { |
553 | ev_tstamp odiff = diff; |
903 | if (time_update_monotonic (EV_A)) |
554 | |
|
|
555 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
556 | { |
904 | { |
557 | now = get_clock (); |
905 | ev_tstamp odiff = rtmn_diff; |
|
|
906 | |
|
|
907 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
908 | { |
558 | diff = ev_now - now; |
909 | rtmn_diff = rt_now - mn_now; |
559 | |
910 | |
560 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
911 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
561 | return; /* all is well */ |
912 | return; /* all is well */ |
562 | |
913 | |
563 | ev_now = ev_time (); |
914 | rt_now = ev_time (); |
|
|
915 | mn_now = get_clock (); |
|
|
916 | now_floor = mn_now; |
|
|
917 | } |
|
|
918 | |
|
|
919 | periodics_reschedule (EV_A); |
|
|
920 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
921 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
564 | } |
922 | } |
565 | |
|
|
566 | periodics_reschedule (diff - odiff); |
|
|
567 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
568 | } |
923 | } |
569 | else |
924 | else |
|
|
925 | #endif |
570 | { |
926 | { |
571 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
927 | rt_now = ev_time (); |
|
|
928 | |
|
|
929 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
572 | { |
930 | { |
573 | periodics_reschedule (ev_now - now); |
931 | periodics_reschedule (EV_A); |
574 | |
932 | |
575 | /* adjust timers. this is easy, as the offset is the same for all */ |
933 | /* adjust timers. this is easy, as the offset is the same for all */ |
576 | for (i = 0; i < timercnt; ++i) |
934 | for (i = 0; i < timercnt; ++i) |
577 | timers [i]->at += diff; |
935 | timers [i]->at += rt_now - mn_now; |
578 | } |
936 | } |
579 | |
937 | |
580 | now = ev_now; |
938 | mn_now = rt_now; |
581 | } |
939 | } |
582 | } |
940 | } |
583 | |
941 | |
584 | int ev_loop_done; |
942 | void |
|
|
943 | ev_ref (EV_P) |
|
|
944 | { |
|
|
945 | ++activecnt; |
|
|
946 | } |
585 | |
947 | |
|
|
948 | void |
|
|
949 | ev_unref (EV_P) |
|
|
950 | { |
|
|
951 | --activecnt; |
|
|
952 | } |
|
|
953 | |
|
|
954 | static int loop_done; |
|
|
955 | |
|
|
956 | void |
586 | void ev_loop (int flags) |
957 | ev_loop (EV_P_ int flags) |
587 | { |
958 | { |
588 | double block; |
959 | double block; |
589 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
960 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
590 | |
961 | |
591 | do |
962 | do |
592 | { |
963 | { |
593 | /* queue check watchers (and execute them) */ |
964 | /* queue check watchers (and execute them) */ |
594 | if (preparecnt) |
965 | if (expect_false (preparecnt)) |
595 | { |
966 | { |
596 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
967 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
597 | call_pending (); |
968 | call_pending (EV_A); |
598 | } |
969 | } |
599 | |
970 | |
600 | /* update fd-related kernel structures */ |
971 | /* update fd-related kernel structures */ |
601 | fd_reify (); |
972 | fd_reify (EV_A); |
602 | |
973 | |
603 | /* calculate blocking time */ |
974 | /* calculate blocking time */ |
604 | |
975 | |
605 | /* we only need this for !monotonic clockor timers, but as we basically |
976 | /* we only need this for !monotonic clockor timers, but as we basically |
606 | always have timers, we just calculate it always */ |
977 | always have timers, we just calculate it always */ |
|
|
978 | #if EV_USE_MONOTONIC |
|
|
979 | if (expect_true (have_monotonic)) |
|
|
980 | time_update_monotonic (EV_A); |
|
|
981 | else |
|
|
982 | #endif |
|
|
983 | { |
607 | ev_now = ev_time (); |
984 | rt_now = ev_time (); |
|
|
985 | mn_now = rt_now; |
|
|
986 | } |
608 | |
987 | |
609 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
988 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
610 | block = 0.; |
989 | block = 0.; |
611 | else |
990 | else |
612 | { |
991 | { |
613 | block = MAX_BLOCKTIME; |
992 | block = MAX_BLOCKTIME; |
614 | |
993 | |
615 | if (timercnt) |
994 | if (timercnt) |
616 | { |
995 | { |
617 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
996 | ev_tstamp to = timers [0]->at - mn_now + method_fudge; |
618 | if (block > to) block = to; |
997 | if (block > to) block = to; |
619 | } |
998 | } |
620 | |
999 | |
621 | if (periodiccnt) |
1000 | if (periodiccnt) |
622 | { |
1001 | { |
623 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1002 | ev_tstamp to = periodics [0]->at - rt_now + method_fudge; |
624 | if (block > to) block = to; |
1003 | if (block > to) block = to; |
625 | } |
1004 | } |
626 | |
1005 | |
627 | if (block < 0.) block = 0.; |
1006 | if (block < 0.) block = 0.; |
628 | } |
1007 | } |
629 | |
1008 | |
630 | method_poll (block); |
1009 | method_poll (EV_A_ block); |
631 | |
1010 | |
632 | /* update ev_now, do magic */ |
1011 | /* update rt_now, do magic */ |
633 | time_update (); |
1012 | time_update (EV_A); |
634 | |
1013 | |
635 | /* queue pending timers and reschedule them */ |
1014 | /* queue pending timers and reschedule them */ |
636 | timers_reify (); /* relative timers called last */ |
1015 | timers_reify (EV_A); /* relative timers called last */ |
637 | periodics_reify (); /* absolute timers called first */ |
1016 | periodics_reify (EV_A); /* absolute timers called first */ |
638 | |
1017 | |
639 | /* queue idle watchers unless io or timers are pending */ |
1018 | /* queue idle watchers unless io or timers are pending */ |
640 | if (!pendingcnt) |
1019 | if (!pendingcnt) |
641 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1020 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
642 | |
1021 | |
643 | /* queue check watchers, to be executed first */ |
1022 | /* queue check watchers, to be executed first */ |
644 | if (checkcnt) |
1023 | if (checkcnt) |
645 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1024 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
646 | |
1025 | |
647 | call_pending (); |
1026 | call_pending (EV_A); |
648 | } |
1027 | } |
649 | while (!ev_loop_done); |
1028 | while (activecnt && !loop_done); |
650 | |
1029 | |
651 | if (ev_loop_done != 2) |
1030 | if (loop_done != 2) |
652 | ev_loop_done = 0; |
1031 | loop_done = 0; |
|
|
1032 | } |
|
|
1033 | |
|
|
1034 | void |
|
|
1035 | ev_unloop (EV_P_ int how) |
|
|
1036 | { |
|
|
1037 | loop_done = how; |
653 | } |
1038 | } |
654 | |
1039 | |
655 | /*****************************************************************************/ |
1040 | /*****************************************************************************/ |
656 | |
1041 | |
657 | static void |
1042 | inline void |
658 | wlist_add (WL *head, WL elem) |
1043 | wlist_add (WL *head, WL elem) |
659 | { |
1044 | { |
660 | elem->next = *head; |
1045 | elem->next = *head; |
661 | *head = elem; |
1046 | *head = elem; |
662 | } |
1047 | } |
663 | |
1048 | |
664 | static void |
1049 | inline void |
665 | wlist_del (WL *head, WL elem) |
1050 | wlist_del (WL *head, WL elem) |
666 | { |
1051 | { |
667 | while (*head) |
1052 | while (*head) |
668 | { |
1053 | { |
669 | if (*head == elem) |
1054 | if (*head == elem) |
… | |
… | |
674 | |
1059 | |
675 | head = &(*head)->next; |
1060 | head = &(*head)->next; |
676 | } |
1061 | } |
677 | } |
1062 | } |
678 | |
1063 | |
679 | static void |
1064 | inline void |
680 | ev_clear (W w) |
1065 | ev_clear_pending (EV_P_ W w) |
681 | { |
1066 | { |
682 | if (w->pending) |
1067 | if (w->pending) |
683 | { |
1068 | { |
684 | pendings [w->pending - 1].w = 0; |
1069 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
685 | w->pending = 0; |
1070 | w->pending = 0; |
686 | } |
1071 | } |
687 | } |
1072 | } |
688 | |
1073 | |
689 | static void |
1074 | inline void |
690 | ev_start (W w, int active) |
1075 | ev_start (EV_P_ W w, int active) |
691 | { |
1076 | { |
|
|
1077 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1078 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1079 | |
692 | w->active = active; |
1080 | w->active = active; |
|
|
1081 | ev_ref (EV_A); |
693 | } |
1082 | } |
694 | |
1083 | |
695 | static void |
1084 | inline void |
696 | ev_stop (W w) |
1085 | ev_stop (EV_P_ W w) |
697 | { |
1086 | { |
|
|
1087 | ev_unref (EV_A); |
698 | w->active = 0; |
1088 | w->active = 0; |
699 | } |
1089 | } |
700 | |
1090 | |
701 | /*****************************************************************************/ |
1091 | /*****************************************************************************/ |
702 | |
1092 | |
703 | void |
1093 | void |
704 | evio_start (struct ev_io *w) |
1094 | ev_io_start (EV_P_ struct ev_io *w) |
705 | { |
1095 | { |
|
|
1096 | int fd = w->fd; |
|
|
1097 | |
706 | if (ev_is_active (w)) |
1098 | if (ev_is_active (w)) |
707 | return; |
1099 | return; |
708 | |
1100 | |
709 | int fd = w->fd; |
1101 | assert (("ev_io_start called with negative fd", fd >= 0)); |
710 | |
1102 | |
711 | ev_start ((W)w, 1); |
1103 | ev_start (EV_A_ (W)w, 1); |
712 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1104 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
713 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1105 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
714 | |
1106 | |
715 | ++fdchangecnt; |
1107 | fd_change (EV_A_ fd); |
716 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
717 | fdchanges [fdchangecnt - 1] = fd; |
|
|
718 | } |
1108 | } |
719 | |
1109 | |
720 | void |
1110 | void |
721 | evio_stop (struct ev_io *w) |
1111 | ev_io_stop (EV_P_ struct ev_io *w) |
722 | { |
1112 | { |
723 | ev_clear ((W)w); |
1113 | ev_clear_pending (EV_A_ (W)w); |
724 | if (!ev_is_active (w)) |
1114 | if (!ev_is_active (w)) |
725 | return; |
1115 | return; |
726 | |
1116 | |
727 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1117 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
728 | ev_stop ((W)w); |
1118 | ev_stop (EV_A_ (W)w); |
729 | |
1119 | |
730 | ++fdchangecnt; |
1120 | fd_change (EV_A_ w->fd); |
731 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
732 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
733 | } |
1121 | } |
734 | |
1122 | |
735 | void |
1123 | void |
736 | evtimer_start (struct ev_timer *w) |
1124 | ev_timer_start (EV_P_ struct ev_timer *w) |
737 | { |
1125 | { |
738 | if (ev_is_active (w)) |
1126 | if (ev_is_active (w)) |
739 | return; |
1127 | return; |
740 | |
1128 | |
741 | w->at += now; |
1129 | w->at += mn_now; |
742 | |
1130 | |
743 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1131 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
744 | |
1132 | |
745 | ev_start ((W)w, ++timercnt); |
1133 | ev_start (EV_A_ (W)w, ++timercnt); |
746 | array_needsize (timers, timermax, timercnt, ); |
1134 | array_needsize (timers, timermax, timercnt, ); |
747 | timers [timercnt - 1] = w; |
1135 | timers [timercnt - 1] = w; |
748 | upheap ((WT *)timers, timercnt - 1); |
1136 | upheap ((WT *)timers, timercnt - 1); |
749 | } |
|
|
750 | |
1137 | |
|
|
1138 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1139 | } |
|
|
1140 | |
751 | void |
1141 | void |
752 | evtimer_stop (struct ev_timer *w) |
1142 | ev_timer_stop (EV_P_ struct ev_timer *w) |
753 | { |
1143 | { |
754 | ev_clear ((W)w); |
1144 | ev_clear_pending (EV_A_ (W)w); |
755 | if (!ev_is_active (w)) |
1145 | if (!ev_is_active (w)) |
756 | return; |
1146 | return; |
757 | |
1147 | |
|
|
1148 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1149 | |
758 | if (w->active < timercnt--) |
1150 | if (((W)w)->active < timercnt--) |
759 | { |
1151 | { |
760 | timers [w->active - 1] = timers [timercnt]; |
1152 | timers [((W)w)->active - 1] = timers [timercnt]; |
761 | downheap ((WT *)timers, timercnt, w->active - 1); |
1153 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
762 | } |
1154 | } |
763 | |
1155 | |
764 | w->at = w->repeat; |
1156 | w->at = w->repeat; |
765 | |
1157 | |
766 | ev_stop ((W)w); |
1158 | ev_stop (EV_A_ (W)w); |
767 | } |
1159 | } |
768 | |
1160 | |
769 | void |
1161 | void |
770 | evtimer_again (struct ev_timer *w) |
1162 | ev_timer_again (EV_P_ struct ev_timer *w) |
771 | { |
1163 | { |
772 | if (ev_is_active (w)) |
1164 | if (ev_is_active (w)) |
773 | { |
1165 | { |
774 | if (w->repeat) |
1166 | if (w->repeat) |
775 | { |
1167 | { |
776 | w->at = now + w->repeat; |
1168 | w->at = mn_now + w->repeat; |
777 | downheap ((WT *)timers, timercnt, w->active - 1); |
1169 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
778 | } |
1170 | } |
779 | else |
1171 | else |
780 | evtimer_stop (w); |
1172 | ev_timer_stop (EV_A_ w); |
781 | } |
1173 | } |
782 | else if (w->repeat) |
1174 | else if (w->repeat) |
783 | evtimer_start (w); |
1175 | ev_timer_start (EV_A_ w); |
784 | } |
1176 | } |
785 | |
1177 | |
786 | void |
1178 | void |
787 | evperiodic_start (struct ev_periodic *w) |
1179 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
788 | { |
1180 | { |
789 | if (ev_is_active (w)) |
1181 | if (ev_is_active (w)) |
790 | return; |
1182 | return; |
791 | |
1183 | |
792 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1184 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
793 | |
1185 | |
794 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1186 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
795 | if (w->interval) |
1187 | if (w->interval) |
796 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1188 | w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; |
797 | |
1189 | |
798 | ev_start ((W)w, ++periodiccnt); |
1190 | ev_start (EV_A_ (W)w, ++periodiccnt); |
799 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1191 | array_needsize (periodics, periodicmax, periodiccnt, ); |
800 | periodics [periodiccnt - 1] = w; |
1192 | periodics [periodiccnt - 1] = w; |
801 | upheap ((WT *)periodics, periodiccnt - 1); |
1193 | upheap ((WT *)periodics, periodiccnt - 1); |
802 | } |
|
|
803 | |
1194 | |
|
|
1195 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1196 | } |
|
|
1197 | |
804 | void |
1198 | void |
805 | evperiodic_stop (struct ev_periodic *w) |
1199 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
806 | { |
1200 | { |
807 | ev_clear ((W)w); |
1201 | ev_clear_pending (EV_A_ (W)w); |
808 | if (!ev_is_active (w)) |
1202 | if (!ev_is_active (w)) |
809 | return; |
1203 | return; |
810 | |
1204 | |
|
|
1205 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1206 | |
811 | if (w->active < periodiccnt--) |
1207 | if (((W)w)->active < periodiccnt--) |
812 | { |
1208 | { |
813 | periodics [w->active - 1] = periodics [periodiccnt]; |
1209 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
814 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1210 | downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
815 | } |
1211 | } |
816 | |
1212 | |
817 | ev_stop ((W)w); |
1213 | ev_stop (EV_A_ (W)w); |
818 | } |
1214 | } |
819 | |
1215 | |
820 | void |
1216 | void |
821 | evsignal_start (struct ev_signal *w) |
1217 | ev_idle_start (EV_P_ struct ev_idle *w) |
822 | { |
1218 | { |
823 | if (ev_is_active (w)) |
1219 | if (ev_is_active (w)) |
824 | return; |
1220 | return; |
825 | |
1221 | |
|
|
1222 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1223 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
1224 | idles [idlecnt - 1] = w; |
|
|
1225 | } |
|
|
1226 | |
|
|
1227 | void |
|
|
1228 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1229 | { |
|
|
1230 | ev_clear_pending (EV_A_ (W)w); |
|
|
1231 | if (ev_is_active (w)) |
|
|
1232 | return; |
|
|
1233 | |
|
|
1234 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1235 | ev_stop (EV_A_ (W)w); |
|
|
1236 | } |
|
|
1237 | |
|
|
1238 | void |
|
|
1239 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1240 | { |
|
|
1241 | if (ev_is_active (w)) |
|
|
1242 | return; |
|
|
1243 | |
|
|
1244 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1245 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1246 | prepares [preparecnt - 1] = w; |
|
|
1247 | } |
|
|
1248 | |
|
|
1249 | void |
|
|
1250 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1251 | { |
|
|
1252 | ev_clear_pending (EV_A_ (W)w); |
|
|
1253 | if (ev_is_active (w)) |
|
|
1254 | return; |
|
|
1255 | |
|
|
1256 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1257 | ev_stop (EV_A_ (W)w); |
|
|
1258 | } |
|
|
1259 | |
|
|
1260 | void |
|
|
1261 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1262 | { |
|
|
1263 | if (ev_is_active (w)) |
|
|
1264 | return; |
|
|
1265 | |
|
|
1266 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1267 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
1268 | checks [checkcnt - 1] = w; |
|
|
1269 | } |
|
|
1270 | |
|
|
1271 | void |
|
|
1272 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1273 | { |
|
|
1274 | ev_clear_pending (EV_A_ (W)w); |
|
|
1275 | if (ev_is_active (w)) |
|
|
1276 | return; |
|
|
1277 | |
|
|
1278 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1279 | ev_stop (EV_A_ (W)w); |
|
|
1280 | } |
|
|
1281 | |
|
|
1282 | #ifndef SA_RESTART |
|
|
1283 | # define SA_RESTART 0 |
|
|
1284 | #endif |
|
|
1285 | |
|
|
1286 | void |
|
|
1287 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1288 | { |
|
|
1289 | #if EV_MULTIPLICITY |
|
|
1290 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
|
|
1291 | #endif |
|
|
1292 | if (ev_is_active (w)) |
|
|
1293 | return; |
|
|
1294 | |
|
|
1295 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1296 | |
826 | ev_start ((W)w, 1); |
1297 | ev_start (EV_A_ (W)w, 1); |
827 | array_needsize (signals, signalmax, w->signum, signals_init); |
1298 | array_needsize (signals, signalmax, w->signum, signals_init); |
828 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1299 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
829 | |
1300 | |
830 | if (!w->next) |
1301 | if (!w->next) |
831 | { |
1302 | { |
832 | struct sigaction sa; |
1303 | struct sigaction sa; |
833 | sa.sa_handler = sighandler; |
1304 | sa.sa_handler = sighandler; |
834 | sigfillset (&sa.sa_mask); |
1305 | sigfillset (&sa.sa_mask); |
835 | sa.sa_flags = 0; |
1306 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
836 | sigaction (w->signum, &sa, 0); |
1307 | sigaction (w->signum, &sa, 0); |
837 | } |
1308 | } |
838 | } |
1309 | } |
839 | |
1310 | |
840 | void |
1311 | void |
841 | evsignal_stop (struct ev_signal *w) |
1312 | ev_signal_stop (EV_P_ struct ev_signal *w) |
842 | { |
1313 | { |
843 | ev_clear ((W)w); |
1314 | ev_clear_pending (EV_A_ (W)w); |
844 | if (!ev_is_active (w)) |
1315 | if (!ev_is_active (w)) |
845 | return; |
1316 | return; |
846 | |
1317 | |
847 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1318 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
848 | ev_stop ((W)w); |
1319 | ev_stop (EV_A_ (W)w); |
849 | |
1320 | |
850 | if (!signals [w->signum - 1].head) |
1321 | if (!signals [w->signum - 1].head) |
851 | signal (w->signum, SIG_DFL); |
1322 | signal (w->signum, SIG_DFL); |
852 | } |
1323 | } |
853 | |
1324 | |
854 | void evidle_start (struct ev_idle *w) |
1325 | void |
|
|
1326 | ev_child_start (EV_P_ struct ev_child *w) |
855 | { |
1327 | { |
|
|
1328 | #if EV_MULTIPLICITY |
|
|
1329 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1330 | #endif |
856 | if (ev_is_active (w)) |
1331 | if (ev_is_active (w)) |
857 | return; |
1332 | return; |
858 | |
1333 | |
859 | ev_start ((W)w, ++idlecnt); |
1334 | ev_start (EV_A_ (W)w, 1); |
860 | array_needsize (idles, idlemax, idlecnt, ); |
1335 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
861 | idles [idlecnt - 1] = w; |
|
|
862 | } |
1336 | } |
863 | |
1337 | |
864 | void evidle_stop (struct ev_idle *w) |
1338 | void |
|
|
1339 | ev_child_stop (EV_P_ struct ev_child *w) |
865 | { |
1340 | { |
866 | ev_clear ((W)w); |
1341 | ev_clear_pending (EV_A_ (W)w); |
867 | if (ev_is_active (w)) |
1342 | if (ev_is_active (w)) |
868 | return; |
1343 | return; |
869 | |
1344 | |
870 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
871 | ev_stop ((W)w); |
|
|
872 | } |
|
|
873 | |
|
|
874 | void evprepare_start (struct ev_prepare *w) |
|
|
875 | { |
|
|
876 | if (ev_is_active (w)) |
|
|
877 | return; |
|
|
878 | |
|
|
879 | ev_start ((W)w, ++preparecnt); |
|
|
880 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
881 | prepares [preparecnt - 1] = w; |
|
|
882 | } |
|
|
883 | |
|
|
884 | void evprepare_stop (struct ev_prepare *w) |
|
|
885 | { |
|
|
886 | ev_clear ((W)w); |
|
|
887 | if (ev_is_active (w)) |
|
|
888 | return; |
|
|
889 | |
|
|
890 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
891 | ev_stop ((W)w); |
|
|
892 | } |
|
|
893 | |
|
|
894 | void evcheck_start (struct ev_check *w) |
|
|
895 | { |
|
|
896 | if (ev_is_active (w)) |
|
|
897 | return; |
|
|
898 | |
|
|
899 | ev_start ((W)w, ++checkcnt); |
|
|
900 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
901 | checks [checkcnt - 1] = w; |
|
|
902 | } |
|
|
903 | |
|
|
904 | void evcheck_stop (struct ev_check *w) |
|
|
905 | { |
|
|
906 | ev_clear ((W)w); |
|
|
907 | if (ev_is_active (w)) |
|
|
908 | return; |
|
|
909 | |
|
|
910 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
911 | ev_stop ((W)w); |
|
|
912 | } |
|
|
913 | |
|
|
914 | void evchild_start (struct ev_child *w) |
|
|
915 | { |
|
|
916 | if (ev_is_active (w)) |
|
|
917 | return; |
|
|
918 | |
|
|
919 | ev_start ((W)w, 1); |
|
|
920 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
921 | } |
|
|
922 | |
|
|
923 | void evchild_stop (struct ev_child *w) |
|
|
924 | { |
|
|
925 | ev_clear ((W)w); |
|
|
926 | if (ev_is_active (w)) |
|
|
927 | return; |
|
|
928 | |
|
|
929 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1345 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
930 | ev_stop ((W)w); |
1346 | ev_stop (EV_A_ (W)w); |
931 | } |
1347 | } |
932 | |
1348 | |
933 | /*****************************************************************************/ |
1349 | /*****************************************************************************/ |
934 | |
1350 | |
935 | struct ev_once |
1351 | struct ev_once |
… | |
… | |
939 | void (*cb)(int revents, void *arg); |
1355 | void (*cb)(int revents, void *arg); |
940 | void *arg; |
1356 | void *arg; |
941 | }; |
1357 | }; |
942 | |
1358 | |
943 | static void |
1359 | static void |
944 | once_cb (struct ev_once *once, int revents) |
1360 | once_cb (EV_P_ struct ev_once *once, int revents) |
945 | { |
1361 | { |
946 | void (*cb)(int revents, void *arg) = once->cb; |
1362 | void (*cb)(int revents, void *arg) = once->cb; |
947 | void *arg = once->arg; |
1363 | void *arg = once->arg; |
948 | |
1364 | |
949 | evio_stop (&once->io); |
1365 | ev_io_stop (EV_A_ &once->io); |
950 | evtimer_stop (&once->to); |
1366 | ev_timer_stop (EV_A_ &once->to); |
951 | free (once); |
1367 | free (once); |
952 | |
1368 | |
953 | cb (revents, arg); |
1369 | cb (revents, arg); |
954 | } |
1370 | } |
955 | |
1371 | |
956 | static void |
1372 | static void |
957 | once_cb_io (struct ev_io *w, int revents) |
1373 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
958 | { |
1374 | { |
959 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1375 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
960 | } |
1376 | } |
961 | |
1377 | |
962 | static void |
1378 | static void |
963 | once_cb_to (struct ev_timer *w, int revents) |
1379 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
964 | { |
1380 | { |
965 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1381 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
966 | } |
1382 | } |
967 | |
1383 | |
968 | void |
1384 | void |
969 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1385 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
970 | { |
1386 | { |
971 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1387 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
972 | |
1388 | |
973 | if (!once) |
1389 | if (!once) |
974 | cb (EV_ERROR, arg); |
1390 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
975 | else |
1391 | else |
976 | { |
1392 | { |
977 | once->cb = cb; |
1393 | once->cb = cb; |
978 | once->arg = arg; |
1394 | once->arg = arg; |
979 | |
1395 | |
980 | evw_init (&once->io, once_cb_io); |
1396 | ev_watcher_init (&once->io, once_cb_io); |
981 | |
|
|
982 | if (fd >= 0) |
1397 | if (fd >= 0) |
983 | { |
1398 | { |
984 | evio_set (&once->io, fd, events); |
1399 | ev_io_set (&once->io, fd, events); |
985 | evio_start (&once->io); |
1400 | ev_io_start (EV_A_ &once->io); |
986 | } |
1401 | } |
987 | |
1402 | |
988 | evw_init (&once->to, once_cb_to); |
1403 | ev_watcher_init (&once->to, once_cb_to); |
989 | |
|
|
990 | if (timeout >= 0.) |
1404 | if (timeout >= 0.) |
991 | { |
1405 | { |
992 | evtimer_set (&once->to, timeout, 0.); |
1406 | ev_timer_set (&once->to, timeout, 0.); |
993 | evtimer_start (&once->to); |
1407 | ev_timer_start (EV_A_ &once->to); |
994 | } |
1408 | } |
995 | } |
1409 | } |
996 | } |
1410 | } |
997 | |
1411 | |
998 | /*****************************************************************************/ |
|
|
999 | |
|
|
1000 | #if 0 |
|
|
1001 | |
|
|
1002 | struct ev_io wio; |
|
|
1003 | |
|
|
1004 | static void |
|
|
1005 | sin_cb (struct ev_io *w, int revents) |
|
|
1006 | { |
|
|
1007 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
1008 | } |
|
|
1009 | |
|
|
1010 | static void |
|
|
1011 | ocb (struct ev_timer *w, int revents) |
|
|
1012 | { |
|
|
1013 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
1014 | evtimer_stop (w); |
|
|
1015 | evtimer_start (w); |
|
|
1016 | } |
|
|
1017 | |
|
|
1018 | static void |
|
|
1019 | scb (struct ev_signal *w, int revents) |
|
|
1020 | { |
|
|
1021 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1022 | evio_stop (&wio); |
|
|
1023 | evio_start (&wio); |
|
|
1024 | } |
|
|
1025 | |
|
|
1026 | static void |
|
|
1027 | gcb (struct ev_signal *w, int revents) |
|
|
1028 | { |
|
|
1029 | fprintf (stderr, "generic %x\n", revents); |
|
|
1030 | |
|
|
1031 | } |
|
|
1032 | |
|
|
1033 | int main (void) |
|
|
1034 | { |
|
|
1035 | ev_init (0); |
|
|
1036 | |
|
|
1037 | evio_init (&wio, sin_cb, 0, EV_READ); |
|
|
1038 | evio_start (&wio); |
|
|
1039 | |
|
|
1040 | struct ev_timer t[10000]; |
|
|
1041 | |
|
|
1042 | #if 0 |
|
|
1043 | int i; |
|
|
1044 | for (i = 0; i < 10000; ++i) |
|
|
1045 | { |
|
|
1046 | struct ev_timer *w = t + i; |
|
|
1047 | evw_init (w, ocb, i); |
|
|
1048 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1049 | evtimer_start (w); |
|
|
1050 | if (drand48 () < 0.5) |
|
|
1051 | evtimer_stop (w); |
|
|
1052 | } |
|
|
1053 | #endif |
|
|
1054 | |
|
|
1055 | struct ev_timer t1; |
|
|
1056 | evtimer_init (&t1, ocb, 5, 10); |
|
|
1057 | evtimer_start (&t1); |
|
|
1058 | |
|
|
1059 | struct ev_signal sig; |
|
|
1060 | evsignal_init (&sig, scb, SIGQUIT); |
|
|
1061 | evsignal_start (&sig); |
|
|
1062 | |
|
|
1063 | struct ev_check cw; |
|
|
1064 | evcheck_init (&cw, gcb); |
|
|
1065 | evcheck_start (&cw); |
|
|
1066 | |
|
|
1067 | struct ev_idle iw; |
|
|
1068 | evidle_init (&iw, gcb); |
|
|
1069 | evidle_start (&iw); |
|
|
1070 | |
|
|
1071 | ev_loop (0); |
|
|
1072 | |
|
|
1073 | return 0; |
|
|
1074 | } |
|
|
1075 | |
|
|
1076 | #endif |
|
|
1077 | |
|
|
1078 | |
|
|
1079 | |
|
|
1080 | |
|
|