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> |
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36 | |
63 | |
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> |
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68 | #include <sys/types.h> |
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69 | #ifndef WIN32 |
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70 | # include <sys/wait.h> |
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71 | #endif |
41 | #include <sys/time.h> |
72 | #include <sys/time.h> |
42 | #include <time.h> |
73 | #include <time.h> |
43 | |
74 | |
44 | #define HAVE_EPOLL 1 |
75 | /**/ |
45 | |
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) */ |
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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 */ |
66 | |
127 | |
67 | #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) |
68 | |
143 | |
69 | typedef struct ev_watcher *W; |
144 | typedef struct ev_watcher *W; |
70 | typedef struct ev_watcher_list *WL; |
145 | typedef struct ev_watcher_list *WL; |
71 | typedef struct ev_watcher_time *WT; |
146 | typedef struct ev_watcher_time *WT; |
72 | |
147 | |
73 | static ev_tstamp now, diff; /* monotonic clock */ |
148 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
74 | ev_tstamp ev_now; |
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75 | int ev_method; |
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76 | |
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77 | static int have_monotonic; /* runtime */ |
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78 | |
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79 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
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80 | static void (*method_modify)(int fd, int oev, int nev); |
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81 | static void (*method_poll)(ev_tstamp timeout); |
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82 | |
149 | |
83 | /*****************************************************************************/ |
150 | /*****************************************************************************/ |
84 | |
151 | |
85 | 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 |
86 | ev_time (void) |
186 | ev_time (void) |
87 | { |
187 | { |
88 | #if HAVE_REALTIME |
188 | #if EV_USE_REALTIME |
89 | struct timespec ts; |
189 | struct timespec ts; |
90 | clock_gettime (CLOCK_REALTIME, &ts); |
190 | clock_gettime (CLOCK_REALTIME, &ts); |
91 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
191 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
92 | #else |
192 | #else |
93 | struct timeval tv; |
193 | struct timeval tv; |
94 | gettimeofday (&tv, 0); |
194 | gettimeofday (&tv, 0); |
95 | return tv.tv_sec + tv.tv_usec * 1e-6; |
195 | return tv.tv_sec + tv.tv_usec * 1e-6; |
96 | #endif |
196 | #endif |
97 | } |
197 | } |
98 | |
198 | |
99 | static ev_tstamp |
199 | inline ev_tstamp |
100 | get_clock (void) |
200 | get_clock (void) |
101 | { |
201 | { |
102 | #if HAVE_MONOTONIC |
202 | #if EV_USE_MONOTONIC |
103 | if (have_monotonic) |
203 | if (expect_true (have_monotonic)) |
104 | { |
204 | { |
105 | struct timespec ts; |
205 | struct timespec ts; |
106 | clock_gettime (CLOCK_MONOTONIC, &ts); |
206 | clock_gettime (CLOCK_MONOTONIC, &ts); |
107 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
207 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
108 | } |
208 | } |
109 | #endif |
209 | #endif |
110 | |
210 | |
111 | return ev_time (); |
211 | return ev_time (); |
112 | } |
212 | } |
113 | |
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 | |
114 | #define array_needsize(base,cur,cnt,init) \ |
222 | #define array_needsize(base,cur,cnt,init) \ |
115 | if ((cnt) > cur) \ |
223 | if (expect_false ((cnt) > cur)) \ |
116 | { \ |
224 | { \ |
117 | 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 | \ |
118 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
232 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
119 | init (base + cur, newcnt - cur); \ |
233 | init (base + cur, newcnt - cur); \ |
120 | cur = newcnt; \ |
234 | cur = newcnt; \ |
121 | } |
235 | } |
122 | |
236 | |
123 | /*****************************************************************************/ |
237 | /*****************************************************************************/ |
124 | |
238 | |
125 | typedef struct |
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126 | { |
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127 | struct ev_io *head; |
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128 | unsigned char wev, rev; /* want, received event set */ |
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129 | } ANFD; |
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130 | |
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131 | static ANFD *anfds; |
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132 | static int anfdmax; |
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133 | |
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134 | static int *fdchanges; |
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135 | static int fdchangemax, fdchangecnt; |
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136 | |
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137 | static void |
239 | static void |
138 | anfds_init (ANFD *base, int count) |
240 | anfds_init (ANFD *base, int count) |
139 | { |
241 | { |
140 | while (count--) |
242 | while (count--) |
141 | { |
243 | { |
142 | base->head = 0; |
244 | base->head = 0; |
143 | base->wev = base->rev = EV_NONE; |
245 | base->events = EV_NONE; |
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246 | base->reify = 0; |
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247 | |
144 | ++base; |
248 | ++base; |
145 | } |
249 | } |
146 | } |
250 | } |
147 | |
251 | |
148 | typedef struct |
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149 | { |
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150 | W w; |
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151 | int events; |
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152 | } ANPENDING; |
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153 | |
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154 | static ANPENDING *pendings; |
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155 | static int pendingmax, pendingcnt; |
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156 | |
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157 | static void |
252 | static void |
158 | event (W w, int events) |
253 | event (EV_P_ W w, int events) |
159 | { |
254 | { |
160 | if (w->active) |
255 | if (w->pending) |
161 | { |
256 | { |
162 | w->pending = ++pendingcnt; |
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163 | array_needsize (pendings, pendingmax, pendingcnt, ); |
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164 | pendings [pendingcnt - 1].w = w; |
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165 | pendings [pendingcnt - 1].events = events; |
257 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
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258 | return; |
166 | } |
259 | } |
167 | } |
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168 | |
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 | |
169 | 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 |
170 | fd_event (int fd, int events) |
277 | fd_event (EV_P_ int fd, int events) |
171 | { |
278 | { |
172 | ANFD *anfd = anfds + fd; |
279 | ANFD *anfd = anfds + fd; |
173 | struct ev_io *w; |
280 | struct ev_io *w; |
174 | |
281 | |
175 | for (w = anfd->head; w; w = w->next) |
282 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
176 | { |
283 | { |
177 | int ev = w->events & events; |
284 | int ev = w->events & events; |
178 | |
285 | |
179 | if (ev) |
286 | if (ev) |
180 | event ((W)w, ev); |
287 | event (EV_A_ (W)w, ev); |
181 | } |
288 | } |
182 | } |
289 | } |
183 | |
290 | |
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291 | /*****************************************************************************/ |
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292 | |
184 | static void |
293 | static void |
185 | queue_events (W *events, int eventcnt, int type) |
294 | fd_reify (EV_P) |
186 | { |
295 | { |
187 | int i; |
296 | int i; |
188 | |
297 | |
189 | for (i = 0; i < eventcnt; ++i) |
298 | for (i = 0; i < fdchangecnt; ++i) |
190 | 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 | } |
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344 | } |
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345 | |
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346 | /* called on EBADF to verify fds */ |
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347 | static void |
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348 | fd_ebadf (EV_P) |
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349 | { |
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350 | int fd; |
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351 | |
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352 | for (fd = 0; fd < anfdmax; ++fd) |
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353 | if (anfds [fd].events) |
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354 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
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355 | fd_kill (EV_A_ fd); |
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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 | } |
191 | } |
386 | } |
192 | |
387 | |
193 | /*****************************************************************************/ |
388 | /*****************************************************************************/ |
194 | |
389 | |
195 | static struct ev_timer **timers; |
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196 | static int timermax, timercnt; |
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197 | |
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198 | static struct ev_periodic **periodics; |
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199 | static int periodicmax, periodiccnt; |
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200 | |
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201 | static void |
390 | static void |
202 | upheap (WT *timers, int k) |
391 | upheap (WT *heap, int k) |
203 | { |
392 | { |
204 | WT w = timers [k]; |
393 | WT w = heap [k]; |
205 | |
394 | |
206 | while (k && timers [k >> 1]->at > w->at) |
395 | while (k && heap [k >> 1]->at > w->at) |
207 | { |
396 | { |
208 | timers [k] = timers [k >> 1]; |
397 | heap [k] = heap [k >> 1]; |
209 | timers [k]->active = k + 1; |
398 | ((W)heap [k])->active = k + 1; |
210 | k >>= 1; |
399 | k >>= 1; |
211 | } |
400 | } |
212 | |
401 | |
213 | timers [k] = w; |
402 | heap [k] = w; |
214 | timers [k]->active = k + 1; |
403 | ((W)heap [k])->active = k + 1; |
215 | |
404 | |
216 | } |
405 | } |
217 | |
406 | |
218 | static void |
407 | static void |
219 | downheap (WT *timers, int N, int k) |
408 | downheap (WT *heap, int N, int k) |
220 | { |
409 | { |
221 | WT w = timers [k]; |
410 | WT w = heap [k]; |
222 | |
411 | |
223 | while (k < (N >> 1)) |
412 | while (k < (N >> 1)) |
224 | { |
413 | { |
225 | int j = k << 1; |
414 | int j = k << 1; |
226 | |
415 | |
227 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
416 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
228 | ++j; |
417 | ++j; |
229 | |
418 | |
230 | if (w->at <= timers [j]->at) |
419 | if (w->at <= heap [j]->at) |
231 | break; |
420 | break; |
232 | |
421 | |
233 | timers [k] = timers [j]; |
422 | heap [k] = heap [j]; |
234 | timers [k]->active = k + 1; |
423 | ((W)heap [k])->active = k + 1; |
235 | k = j; |
424 | k = j; |
236 | } |
425 | } |
237 | |
426 | |
238 | timers [k] = w; |
427 | heap [k] = w; |
239 | timers [k]->active = k + 1; |
428 | ((W)heap [k])->active = k + 1; |
240 | } |
429 | } |
241 | |
430 | |
242 | /*****************************************************************************/ |
431 | /*****************************************************************************/ |
243 | |
432 | |
244 | typedef struct |
433 | typedef struct |
245 | { |
434 | { |
246 | struct ev_signal *head; |
435 | struct ev_watcher_list *head; |
247 | sig_atomic_t gotsig; |
436 | sig_atomic_t volatile gotsig; |
248 | } ANSIG; |
437 | } ANSIG; |
249 | |
438 | |
250 | static ANSIG *signals; |
439 | static ANSIG *signals; |
251 | static int signalmax; |
440 | static int signalmax; |
252 | |
441 | |
253 | static int sigpipe [2]; |
442 | static int sigpipe [2]; |
254 | static sig_atomic_t gotsig; |
443 | static sig_atomic_t volatile gotsig; |
255 | static struct ev_io sigev; |
444 | static struct ev_io sigev; |
256 | |
445 | |
257 | static void |
446 | static void |
258 | signals_init (ANSIG *base, int count) |
447 | signals_init (ANSIG *base, int count) |
259 | { |
448 | { |
260 | while (count--) |
449 | while (count--) |
261 | { |
450 | { |
262 | base->head = 0; |
451 | base->head = 0; |
263 | base->gotsig = 0; |
452 | base->gotsig = 0; |
|
|
453 | |
264 | ++base; |
454 | ++base; |
265 | } |
455 | } |
266 | } |
456 | } |
267 | |
457 | |
268 | static void |
458 | static void |
… | |
… | |
270 | { |
460 | { |
271 | signals [signum - 1].gotsig = 1; |
461 | signals [signum - 1].gotsig = 1; |
272 | |
462 | |
273 | if (!gotsig) |
463 | if (!gotsig) |
274 | { |
464 | { |
|
|
465 | int old_errno = errno; |
275 | gotsig = 1; |
466 | gotsig = 1; |
276 | write (sigpipe [1], &gotsig, 1); |
467 | write (sigpipe [1], &signum, 1); |
|
|
468 | errno = old_errno; |
277 | } |
469 | } |
278 | } |
470 | } |
279 | |
471 | |
280 | static void |
472 | static void |
281 | sigcb (struct ev_io *iow, int revents) |
473 | sigcb (EV_P_ struct ev_io *iow, int revents) |
282 | { |
474 | { |
283 | struct ev_signal *w; |
475 | struct ev_watcher_list *w; |
284 | int sig; |
476 | int signum; |
285 | |
477 | |
|
|
478 | read (sigpipe [0], &revents, 1); |
286 | gotsig = 0; |
479 | gotsig = 0; |
287 | read (sigpipe [0], &revents, 1); |
|
|
288 | |
480 | |
289 | for (sig = signalmax; sig--; ) |
481 | for (signum = signalmax; signum--; ) |
290 | if (signals [sig].gotsig) |
482 | if (signals [signum].gotsig) |
291 | { |
483 | { |
292 | signals [sig].gotsig = 0; |
484 | signals [signum].gotsig = 0; |
293 | |
485 | |
294 | for (w = signals [sig].head; w; w = w->next) |
486 | for (w = signals [signum].head; w; w = w->next) |
295 | event ((W)w, EV_SIGNAL); |
487 | event (EV_A_ (W)w, EV_SIGNAL); |
296 | } |
488 | } |
297 | } |
489 | } |
298 | |
490 | |
299 | static void |
491 | static void |
300 | siginit (void) |
492 | siginit (EV_P) |
301 | { |
493 | { |
|
|
494 | #ifndef WIN32 |
302 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
495 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
303 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
496 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
304 | |
497 | |
305 | /* rather than sort out wether we really need nb, set it */ |
498 | /* rather than sort out wether we really need nb, set it */ |
306 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
499 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
307 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
500 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
501 | #endif |
308 | |
502 | |
309 | evio_set (&sigev, sigpipe [0], EV_READ); |
503 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
310 | evio_start (&sigev); |
504 | ev_io_start (EV_A_ &sigev); |
|
|
505 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
311 | } |
506 | } |
312 | |
507 | |
313 | /*****************************************************************************/ |
508 | /*****************************************************************************/ |
314 | |
509 | |
315 | static struct ev_idle **idles; |
510 | #ifndef WIN32 |
316 | static int idlemax, idlecnt; |
|
|
317 | |
511 | |
318 | static struct ev_check **checks; |
512 | static struct ev_child *childs [PID_HASHSIZE]; |
319 | static int checkmax, checkcnt; |
513 | static struct ev_signal childev; |
|
|
514 | |
|
|
515 | #ifndef WCONTINUED |
|
|
516 | # define WCONTINUED 0 |
|
|
517 | #endif |
|
|
518 | |
|
|
519 | static void |
|
|
520 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
521 | { |
|
|
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 | ev_priority (w) = ev_priority (sw); /* 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 | { |
|
|
537 | int pid, status; |
|
|
538 | |
|
|
539 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
540 | { |
|
|
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 |
320 | |
550 | |
321 | /*****************************************************************************/ |
551 | /*****************************************************************************/ |
322 | |
552 | |
|
|
553 | #if EV_USE_KQUEUE |
|
|
554 | # include "ev_kqueue.c" |
|
|
555 | #endif |
323 | #if HAVE_EPOLL |
556 | #if EV_USE_EPOLL |
324 | # include "ev_epoll.c" |
557 | # include "ev_epoll.c" |
325 | #endif |
558 | #endif |
|
|
559 | #if EV_USE_POLL |
|
|
560 | # include "ev_poll.c" |
|
|
561 | #endif |
326 | #if HAVE_SELECT |
562 | #if EV_USE_SELECT |
327 | # include "ev_select.c" |
563 | # include "ev_select.c" |
328 | #endif |
564 | #endif |
329 | |
565 | |
330 | int ev_init (int flags) |
566 | int |
|
|
567 | ev_version_major (void) |
331 | { |
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 | { |
332 | #if HAVE_MONOTONIC |
601 | #if EV_USE_MONOTONIC |
333 | { |
602 | { |
334 | struct timespec ts; |
603 | struct timespec ts; |
335 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
604 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
336 | have_monotonic = 1; |
605 | have_monotonic = 1; |
337 | } |
606 | } |
338 | #endif |
607 | #endif |
339 | |
608 | |
340 | ev_now = ev_time (); |
609 | rt_now = ev_time (); |
341 | now = get_clock (); |
610 | mn_now = get_clock (); |
342 | diff = ev_now - now; |
611 | now_floor = mn_now; |
|
|
612 | rtmn_diff = rt_now - mn_now; |
343 | |
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]) |
344 | if (pipe (sigpipe)) |
716 | if (pipe (sigpipe)) |
345 | return 0; |
717 | return 0; |
346 | |
718 | |
347 | ev_method = EVMETHOD_NONE; |
719 | if (!default_loop) |
348 | #if HAVE_EPOLL |
|
|
349 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
350 | #endif |
|
|
351 | #if HAVE_SELECT |
|
|
352 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
353 | #endif |
|
|
354 | |
|
|
355 | if (ev_method) |
|
|
356 | { |
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)) |
|
|
730 | { |
357 | evw_init (&sigev, sigcb); |
731 | ev_watcher_init (&sigev, sigcb); |
|
|
732 | ev_set_priority (&sigev, EV_MAXPRI); |
358 | siginit (); |
733 | siginit (EV_A); |
359 | } |
|
|
360 | |
734 | |
361 | return ev_method; |
735 | #ifndef WIN32 |
362 | } |
736 | ev_signal_init (&childev, childcb, SIGCHLD); |
363 | |
737 | ev_set_priority (&childev, EV_MAXPRI); |
364 | /*****************************************************************************/ |
738 | ev_signal_start (EV_A_ &childev); |
365 | |
739 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
366 | void ev_prefork (void) |
|
|
367 | { |
|
|
368 | /* nop */ |
|
|
369 | } |
|
|
370 | |
|
|
371 | void ev_postfork_parent (void) |
|
|
372 | { |
|
|
373 | /* nop */ |
|
|
374 | } |
|
|
375 | |
|
|
376 | void ev_postfork_child (void) |
|
|
377 | { |
|
|
378 | #if HAVE_EPOLL |
|
|
379 | if (ev_method == EVMETHOD_EPOLL) |
|
|
380 | epoll_postfork_child (); |
|
|
381 | #endif |
740 | #endif |
|
|
741 | } |
|
|
742 | else |
|
|
743 | default_loop = 0; |
|
|
744 | } |
382 | |
745 | |
|
|
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 */ |
|
|
757 | ev_signal_stop (EV_A_ &childev); |
|
|
758 | |
|
|
759 | ev_ref (EV_A); /* signal watcher */ |
383 | 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); |
384 | close (sigpipe [0]); |
778 | close (sigpipe [0]); |
385 | close (sigpipe [1]); |
779 | close (sigpipe [1]); |
386 | pipe (sigpipe); |
780 | pipe (sigpipe); |
|
|
781 | |
|
|
782 | ev_ref (EV_A); /* signal watcher */ |
387 | siginit (); |
783 | siginit (EV_A); |
388 | } |
784 | } |
389 | |
785 | |
390 | /*****************************************************************************/ |
786 | /*****************************************************************************/ |
391 | |
787 | |
392 | static void |
788 | static void |
393 | fd_reify (void) |
789 | call_pending (EV_P) |
394 | { |
790 | { |
395 | int i; |
791 | int pri; |
396 | |
792 | |
397 | for (i = 0; i < fdchangecnt; ++i) |
793 | for (pri = NUMPRI; pri--; ) |
398 | { |
794 | while (pendingcnt [pri]) |
399 | int fd = fdchanges [i]; |
|
|
400 | ANFD *anfd = anfds + fd; |
|
|
401 | struct ev_io *w; |
|
|
402 | |
|
|
403 | int wev = 0; |
|
|
404 | |
|
|
405 | for (w = anfd->head; w; w = w->next) |
|
|
406 | wev |= w->events; |
|
|
407 | |
|
|
408 | if (anfd->wev != wev) |
|
|
409 | { |
795 | { |
410 | method_modify (fd, anfd->wev, wev); |
796 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
411 | anfd->wev = wev; |
|
|
412 | } |
|
|
413 | } |
|
|
414 | |
797 | |
415 | fdchangecnt = 0; |
|
|
416 | } |
|
|
417 | |
|
|
418 | static void |
|
|
419 | call_pending () |
|
|
420 | { |
|
|
421 | int i; |
|
|
422 | |
|
|
423 | for (i = 0; i < pendingcnt; ++i) |
|
|
424 | { |
|
|
425 | ANPENDING *p = pendings + i; |
|
|
426 | |
|
|
427 | if (p->w) |
798 | if (p->w) |
428 | { |
799 | { |
429 | p->w->pending = 0; |
800 | p->w->pending = 0; |
430 | p->w->cb (p->w, p->events); |
801 | |
|
|
802 | (*(void (**)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events); |
431 | } |
803 | } |
432 | } |
804 | } |
433 | |
|
|
434 | pendingcnt = 0; |
|
|
435 | } |
805 | } |
436 | |
806 | |
437 | static void |
807 | static void |
438 | timers_reify () |
808 | timers_reify (EV_P) |
439 | { |
809 | { |
440 | while (timercnt && timers [0]->at <= now) |
810 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
441 | { |
811 | { |
442 | struct ev_timer *w = timers [0]; |
812 | struct ev_timer *w = timers [0]; |
443 | |
813 | |
444 | event ((W)w, EV_TIMEOUT); |
814 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
445 | |
815 | |
446 | /* first reschedule or stop timer */ |
816 | /* first reschedule or stop timer */ |
447 | if (w->repeat) |
817 | if (w->repeat) |
448 | { |
818 | { |
|
|
819 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
449 | w->at = now + w->repeat; |
820 | ((WT)w)->at = mn_now + w->repeat; |
450 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
|
|
451 | downheap ((WT *)timers, timercnt, 0); |
821 | downheap ((WT *)timers, timercnt, 0); |
452 | } |
822 | } |
453 | else |
823 | else |
454 | evtimer_stop (w); /* nonrepeating: stop timer */ |
824 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
455 | } |
|
|
456 | } |
|
|
457 | |
825 | |
|
|
826 | event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
827 | } |
|
|
828 | } |
|
|
829 | |
458 | static void |
830 | static void |
459 | periodics_reify () |
831 | periodics_reify (EV_P) |
460 | { |
832 | { |
461 | while (periodiccnt && periodics [0]->at <= ev_now) |
833 | while (periodiccnt && ((WT)periodics [0])->at <= rt_now) |
462 | { |
834 | { |
463 | struct ev_periodic *w = periodics [0]; |
835 | struct ev_periodic *w = periodics [0]; |
|
|
836 | |
|
|
837 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
464 | |
838 | |
465 | /* first reschedule or stop timer */ |
839 | /* first reschedule or stop timer */ |
466 | if (w->interval) |
840 | if (w->interval) |
467 | { |
841 | { |
468 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
842 | ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
469 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
843 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); |
470 | downheap ((WT *)periodics, periodiccnt, 0); |
844 | downheap ((WT *)periodics, periodiccnt, 0); |
471 | } |
845 | } |
472 | else |
846 | else |
473 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
847 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
474 | |
848 | |
475 | event ((W)w, EV_TIMEOUT); |
849 | event (EV_A_ (W)w, EV_PERIODIC); |
476 | } |
850 | } |
477 | } |
851 | } |
478 | |
852 | |
479 | static void |
853 | static void |
480 | periodics_reschedule (ev_tstamp diff) |
854 | periodics_reschedule (EV_P) |
481 | { |
855 | { |
482 | int i; |
856 | int i; |
483 | |
857 | |
484 | /* adjust periodics after time jump */ |
858 | /* adjust periodics after time jump */ |
485 | for (i = 0; i < periodiccnt; ++i) |
859 | for (i = 0; i < periodiccnt; ++i) |
486 | { |
860 | { |
487 | struct ev_periodic *w = periodics [i]; |
861 | struct ev_periodic *w = periodics [i]; |
488 | |
862 | |
489 | if (w->interval) |
863 | if (w->interval) |
490 | { |
864 | { |
491 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
865 | ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
492 | |
866 | |
493 | if (fabs (diff) >= 1e-4) |
867 | if (fabs (diff) >= 1e-4) |
494 | { |
868 | { |
495 | evperiodic_stop (w); |
869 | ev_periodic_stop (EV_A_ w); |
496 | evperiodic_start (w); |
870 | ev_periodic_start (EV_A_ w); |
497 | |
871 | |
498 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
872 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
499 | } |
873 | } |
500 | } |
874 | } |
501 | } |
875 | } |
502 | } |
876 | } |
503 | |
877 | |
|
|
878 | inline int |
|
|
879 | time_update_monotonic (EV_P) |
|
|
880 | { |
|
|
881 | mn_now = get_clock (); |
|
|
882 | |
|
|
883 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
884 | { |
|
|
885 | rt_now = rtmn_diff + mn_now; |
|
|
886 | return 0; |
|
|
887 | } |
|
|
888 | else |
|
|
889 | { |
|
|
890 | now_floor = mn_now; |
|
|
891 | rt_now = ev_time (); |
|
|
892 | return 1; |
|
|
893 | } |
|
|
894 | } |
|
|
895 | |
504 | static void |
896 | static void |
505 | time_update () |
897 | time_update (EV_P) |
506 | { |
898 | { |
507 | int i; |
899 | int i; |
508 | |
900 | |
509 | ev_now = ev_time (); |
901 | #if EV_USE_MONOTONIC |
510 | |
|
|
511 | if (have_monotonic) |
902 | if (expect_true (have_monotonic)) |
512 | { |
903 | { |
513 | ev_tstamp odiff = diff; |
904 | if (time_update_monotonic (EV_A)) |
514 | |
|
|
515 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
516 | { |
905 | { |
517 | now = get_clock (); |
906 | ev_tstamp odiff = rtmn_diff; |
|
|
907 | |
|
|
908 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
909 | { |
518 | diff = ev_now - now; |
910 | rtmn_diff = rt_now - mn_now; |
519 | |
911 | |
520 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
912 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
521 | return; /* all is well */ |
913 | return; /* all is well */ |
522 | |
914 | |
523 | ev_now = ev_time (); |
915 | rt_now = ev_time (); |
|
|
916 | mn_now = get_clock (); |
|
|
917 | now_floor = mn_now; |
|
|
918 | } |
|
|
919 | |
|
|
920 | periodics_reschedule (EV_A); |
|
|
921 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
922 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
524 | } |
923 | } |
525 | |
|
|
526 | periodics_reschedule (diff - odiff); |
|
|
527 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
528 | } |
924 | } |
529 | else |
925 | else |
|
|
926 | #endif |
530 | { |
927 | { |
531 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
928 | rt_now = ev_time (); |
|
|
929 | |
|
|
930 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
532 | { |
931 | { |
533 | periodics_reschedule (ev_now - now); |
932 | periodics_reschedule (EV_A); |
534 | |
933 | |
535 | /* adjust timers. this is easy, as the offset is the same for all */ |
934 | /* adjust timers. this is easy, as the offset is the same for all */ |
536 | for (i = 0; i < timercnt; ++i) |
935 | for (i = 0; i < timercnt; ++i) |
537 | timers [i]->at += diff; |
936 | ((WT)timers [i])->at += rt_now - mn_now; |
538 | } |
937 | } |
539 | |
938 | |
540 | now = ev_now; |
939 | mn_now = rt_now; |
541 | } |
940 | } |
542 | } |
941 | } |
543 | |
942 | |
544 | int ev_loop_done; |
943 | void |
|
|
944 | ev_ref (EV_P) |
|
|
945 | { |
|
|
946 | ++activecnt; |
|
|
947 | } |
545 | |
948 | |
|
|
949 | void |
|
|
950 | ev_unref (EV_P) |
|
|
951 | { |
|
|
952 | --activecnt; |
|
|
953 | } |
|
|
954 | |
|
|
955 | static int loop_done; |
|
|
956 | |
|
|
957 | void |
546 | void ev_loop (int flags) |
958 | ev_loop (EV_P_ int flags) |
547 | { |
959 | { |
548 | double block; |
960 | double block; |
549 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
961 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
550 | |
|
|
551 | if (checkcnt) |
|
|
552 | { |
|
|
553 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
554 | call_pending (); |
|
|
555 | } |
|
|
556 | |
962 | |
557 | do |
963 | do |
558 | { |
964 | { |
|
|
965 | /* queue check watchers (and execute them) */ |
|
|
966 | if (expect_false (preparecnt)) |
|
|
967 | { |
|
|
968 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
969 | call_pending (EV_A); |
|
|
970 | } |
|
|
971 | |
559 | /* update fd-related kernel structures */ |
972 | /* update fd-related kernel structures */ |
560 | fd_reify (); |
973 | fd_reify (EV_A); |
561 | |
974 | |
562 | /* calculate blocking time */ |
975 | /* calculate blocking time */ |
563 | |
976 | |
564 | /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
977 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
978 | always have timers, we just calculate it always */ |
|
|
979 | #if EV_USE_MONOTONIC |
|
|
980 | if (expect_true (have_monotonic)) |
|
|
981 | time_update_monotonic (EV_A); |
|
|
982 | else |
|
|
983 | #endif |
|
|
984 | { |
565 | ev_now = ev_time (); |
985 | rt_now = ev_time (); |
|
|
986 | mn_now = rt_now; |
|
|
987 | } |
566 | |
988 | |
567 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
989 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
568 | block = 0.; |
990 | block = 0.; |
569 | else |
991 | else |
570 | { |
992 | { |
571 | block = MAX_BLOCKTIME; |
993 | block = MAX_BLOCKTIME; |
572 | |
994 | |
573 | if (timercnt) |
995 | if (timercnt) |
574 | { |
996 | { |
575 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
997 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
576 | if (block > to) block = to; |
998 | if (block > to) block = to; |
577 | } |
999 | } |
578 | |
1000 | |
579 | if (periodiccnt) |
1001 | if (periodiccnt) |
580 | { |
1002 | { |
581 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1003 | ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; |
582 | if (block > to) block = to; |
1004 | if (block > to) block = to; |
583 | } |
1005 | } |
584 | |
1006 | |
585 | if (block < 0.) block = 0.; |
1007 | if (block < 0.) block = 0.; |
586 | } |
1008 | } |
587 | |
1009 | |
588 | method_poll (block); |
1010 | method_poll (EV_A_ block); |
589 | |
1011 | |
590 | /* update ev_now, do magic */ |
1012 | /* update rt_now, do magic */ |
591 | time_update (); |
1013 | time_update (EV_A); |
592 | |
1014 | |
593 | /* queue pending timers and reschedule them */ |
1015 | /* queue pending timers and reschedule them */ |
|
|
1016 | timers_reify (EV_A); /* relative timers called last */ |
594 | periodics_reify (); /* absolute timers first */ |
1017 | periodics_reify (EV_A); /* absolute timers called first */ |
595 | timers_reify (); /* relative timers second */ |
|
|
596 | |
1018 | |
597 | /* queue idle watchers unless io or timers are pending */ |
1019 | /* queue idle watchers unless io or timers are pending */ |
598 | if (!pendingcnt) |
1020 | if (!pendingcnt) |
599 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1021 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
600 | |
1022 | |
601 | /* queue check and possibly idle watchers */ |
1023 | /* queue check watchers, to be executed first */ |
|
|
1024 | if (checkcnt) |
602 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1025 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
603 | |
1026 | |
604 | call_pending (); |
1027 | call_pending (EV_A); |
605 | } |
1028 | } |
606 | while (!ev_loop_done); |
1029 | while (activecnt && !loop_done); |
607 | |
1030 | |
608 | if (ev_loop_done != 2) |
1031 | if (loop_done != 2) |
609 | ev_loop_done = 0; |
1032 | loop_done = 0; |
|
|
1033 | } |
|
|
1034 | |
|
|
1035 | void |
|
|
1036 | ev_unloop (EV_P_ int how) |
|
|
1037 | { |
|
|
1038 | loop_done = how; |
610 | } |
1039 | } |
611 | |
1040 | |
612 | /*****************************************************************************/ |
1041 | /*****************************************************************************/ |
613 | |
1042 | |
614 | static void |
1043 | inline void |
615 | wlist_add (WL *head, WL elem) |
1044 | wlist_add (WL *head, WL elem) |
616 | { |
1045 | { |
617 | elem->next = *head; |
1046 | elem->next = *head; |
618 | *head = elem; |
1047 | *head = elem; |
619 | } |
1048 | } |
620 | |
1049 | |
621 | static void |
1050 | inline void |
622 | wlist_del (WL *head, WL elem) |
1051 | wlist_del (WL *head, WL elem) |
623 | { |
1052 | { |
624 | while (*head) |
1053 | while (*head) |
625 | { |
1054 | { |
626 | if (*head == elem) |
1055 | if (*head == elem) |
… | |
… | |
631 | |
1060 | |
632 | head = &(*head)->next; |
1061 | head = &(*head)->next; |
633 | } |
1062 | } |
634 | } |
1063 | } |
635 | |
1064 | |
636 | static void |
1065 | inline void |
637 | ev_clear (W w) |
1066 | ev_clear_pending (EV_P_ W w) |
638 | { |
1067 | { |
639 | if (w->pending) |
1068 | if (w->pending) |
640 | { |
1069 | { |
641 | pendings [w->pending - 1].w = 0; |
1070 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
642 | w->pending = 0; |
1071 | w->pending = 0; |
643 | } |
1072 | } |
644 | } |
1073 | } |
645 | |
1074 | |
646 | static void |
1075 | inline void |
647 | ev_start (W w, int active) |
1076 | ev_start (EV_P_ W w, int active) |
648 | { |
1077 | { |
|
|
1078 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1079 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1080 | |
649 | w->active = active; |
1081 | w->active = active; |
|
|
1082 | ev_ref (EV_A); |
650 | } |
1083 | } |
651 | |
1084 | |
652 | static void |
1085 | inline void |
653 | ev_stop (W w) |
1086 | ev_stop (EV_P_ W w) |
654 | { |
1087 | { |
|
|
1088 | ev_unref (EV_A); |
655 | w->active = 0; |
1089 | w->active = 0; |
656 | } |
1090 | } |
657 | |
1091 | |
658 | /*****************************************************************************/ |
1092 | /*****************************************************************************/ |
659 | |
1093 | |
660 | void |
1094 | void |
661 | evio_start (struct ev_io *w) |
1095 | ev_io_start (EV_P_ struct ev_io *w) |
662 | { |
1096 | { |
|
|
1097 | int fd = w->fd; |
|
|
1098 | |
663 | if (ev_is_active (w)) |
1099 | if (ev_is_active (w)) |
664 | return; |
1100 | return; |
665 | |
1101 | |
666 | int fd = w->fd; |
1102 | assert (("ev_io_start called with negative fd", fd >= 0)); |
667 | |
1103 | |
668 | ev_start ((W)w, 1); |
1104 | ev_start (EV_A_ (W)w, 1); |
669 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1105 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
670 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1106 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
671 | |
1107 | |
672 | ++fdchangecnt; |
1108 | fd_change (EV_A_ fd); |
673 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
674 | fdchanges [fdchangecnt - 1] = fd; |
|
|
675 | } |
1109 | } |
676 | |
1110 | |
677 | void |
1111 | void |
678 | evio_stop (struct ev_io *w) |
1112 | ev_io_stop (EV_P_ struct ev_io *w) |
679 | { |
1113 | { |
680 | ev_clear ((W)w); |
1114 | ev_clear_pending (EV_A_ (W)w); |
681 | if (!ev_is_active (w)) |
1115 | if (!ev_is_active (w)) |
682 | return; |
1116 | return; |
683 | |
1117 | |
684 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1118 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
685 | ev_stop ((W)w); |
1119 | ev_stop (EV_A_ (W)w); |
686 | |
1120 | |
687 | ++fdchangecnt; |
1121 | fd_change (EV_A_ w->fd); |
688 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
689 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
690 | } |
1122 | } |
691 | |
1123 | |
692 | void |
1124 | void |
693 | evtimer_start (struct ev_timer *w) |
1125 | ev_timer_start (EV_P_ struct ev_timer *w) |
694 | { |
1126 | { |
695 | if (ev_is_active (w)) |
1127 | if (ev_is_active (w)) |
696 | return; |
1128 | return; |
697 | |
1129 | |
698 | w->at += now; |
1130 | ((WT)w)->at += mn_now; |
699 | |
1131 | |
700 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1132 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
701 | |
1133 | |
702 | ev_start ((W)w, ++timercnt); |
1134 | ev_start (EV_A_ (W)w, ++timercnt); |
703 | array_needsize (timers, timermax, timercnt, ); |
1135 | array_needsize (timers, timermax, timercnt, ); |
704 | timers [timercnt - 1] = w; |
1136 | timers [timercnt - 1] = w; |
705 | upheap ((WT *)timers, timercnt - 1); |
1137 | upheap ((WT *)timers, timercnt - 1); |
706 | } |
|
|
707 | |
1138 | |
|
|
1139 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1140 | } |
|
|
1141 | |
708 | void |
1142 | void |
709 | evtimer_stop (struct ev_timer *w) |
1143 | ev_timer_stop (EV_P_ struct ev_timer *w) |
710 | { |
1144 | { |
711 | ev_clear ((W)w); |
1145 | ev_clear_pending (EV_A_ (W)w); |
712 | if (!ev_is_active (w)) |
1146 | if (!ev_is_active (w)) |
713 | return; |
1147 | return; |
714 | |
1148 | |
|
|
1149 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1150 | |
715 | if (w->active < timercnt--) |
1151 | if (((W)w)->active < timercnt--) |
716 | { |
1152 | { |
717 | timers [w->active - 1] = timers [timercnt]; |
1153 | timers [((W)w)->active - 1] = timers [timercnt]; |
718 | downheap ((WT *)timers, timercnt, w->active - 1); |
1154 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
719 | } |
1155 | } |
720 | |
1156 | |
721 | w->at = w->repeat; |
1157 | ((WT)w)->at = w->repeat; |
722 | |
1158 | |
723 | ev_stop ((W)w); |
1159 | ev_stop (EV_A_ (W)w); |
724 | } |
1160 | } |
725 | |
1161 | |
726 | void |
1162 | void |
727 | evtimer_again (struct ev_timer *w) |
1163 | ev_timer_again (EV_P_ struct ev_timer *w) |
728 | { |
1164 | { |
729 | if (ev_is_active (w)) |
1165 | if (ev_is_active (w)) |
730 | { |
1166 | { |
731 | if (w->repeat) |
1167 | if (w->repeat) |
732 | { |
1168 | { |
733 | w->at = now + w->repeat; |
1169 | ((WT)w)->at = mn_now + w->repeat; |
734 | downheap ((WT *)timers, timercnt, w->active - 1); |
1170 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
735 | } |
1171 | } |
736 | else |
1172 | else |
737 | evtimer_stop (w); |
1173 | ev_timer_stop (EV_A_ w); |
738 | } |
1174 | } |
739 | else if (w->repeat) |
1175 | else if (w->repeat) |
740 | evtimer_start (w); |
1176 | ev_timer_start (EV_A_ w); |
741 | } |
1177 | } |
742 | |
1178 | |
743 | void |
1179 | void |
744 | evperiodic_start (struct ev_periodic *w) |
1180 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
745 | { |
1181 | { |
746 | if (ev_is_active (w)) |
1182 | if (ev_is_active (w)) |
747 | return; |
1183 | return; |
748 | |
1184 | |
749 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1185 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
750 | |
1186 | |
751 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1187 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
752 | if (w->interval) |
1188 | if (w->interval) |
753 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1189 | ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
754 | |
1190 | |
755 | ev_start ((W)w, ++periodiccnt); |
1191 | ev_start (EV_A_ (W)w, ++periodiccnt); |
756 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1192 | array_needsize (periodics, periodicmax, periodiccnt, ); |
757 | periodics [periodiccnt - 1] = w; |
1193 | periodics [periodiccnt - 1] = w; |
758 | upheap ((WT *)periodics, periodiccnt - 1); |
1194 | upheap ((WT *)periodics, periodiccnt - 1); |
759 | } |
|
|
760 | |
1195 | |
|
|
1196 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1197 | } |
|
|
1198 | |
761 | void |
1199 | void |
762 | evperiodic_stop (struct ev_periodic *w) |
1200 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
763 | { |
1201 | { |
764 | ev_clear ((W)w); |
1202 | ev_clear_pending (EV_A_ (W)w); |
765 | if (!ev_is_active (w)) |
1203 | if (!ev_is_active (w)) |
766 | return; |
1204 | return; |
767 | |
1205 | |
|
|
1206 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1207 | |
768 | if (w->active < periodiccnt--) |
1208 | if (((W)w)->active < periodiccnt--) |
769 | { |
1209 | { |
770 | periodics [w->active - 1] = periodics [periodiccnt]; |
1210 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
771 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1211 | downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
772 | } |
1212 | } |
773 | |
1213 | |
774 | ev_stop ((W)w); |
1214 | ev_stop (EV_A_ (W)w); |
775 | } |
1215 | } |
776 | |
1216 | |
777 | void |
1217 | void |
778 | evsignal_start (struct ev_signal *w) |
1218 | ev_idle_start (EV_P_ struct ev_idle *w) |
779 | { |
1219 | { |
780 | if (ev_is_active (w)) |
1220 | if (ev_is_active (w)) |
781 | return; |
1221 | return; |
782 | |
1222 | |
|
|
1223 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1224 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
1225 | idles [idlecnt - 1] = w; |
|
|
1226 | } |
|
|
1227 | |
|
|
1228 | void |
|
|
1229 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1230 | { |
|
|
1231 | ev_clear_pending (EV_A_ (W)w); |
|
|
1232 | if (ev_is_active (w)) |
|
|
1233 | return; |
|
|
1234 | |
|
|
1235 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1236 | ev_stop (EV_A_ (W)w); |
|
|
1237 | } |
|
|
1238 | |
|
|
1239 | void |
|
|
1240 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1241 | { |
|
|
1242 | if (ev_is_active (w)) |
|
|
1243 | return; |
|
|
1244 | |
|
|
1245 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1246 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1247 | prepares [preparecnt - 1] = w; |
|
|
1248 | } |
|
|
1249 | |
|
|
1250 | void |
|
|
1251 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1252 | { |
|
|
1253 | ev_clear_pending (EV_A_ (W)w); |
|
|
1254 | if (ev_is_active (w)) |
|
|
1255 | return; |
|
|
1256 | |
|
|
1257 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1258 | ev_stop (EV_A_ (W)w); |
|
|
1259 | } |
|
|
1260 | |
|
|
1261 | void |
|
|
1262 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1263 | { |
|
|
1264 | if (ev_is_active (w)) |
|
|
1265 | return; |
|
|
1266 | |
|
|
1267 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1268 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
1269 | checks [checkcnt - 1] = w; |
|
|
1270 | } |
|
|
1271 | |
|
|
1272 | void |
|
|
1273 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1274 | { |
|
|
1275 | ev_clear_pending (EV_A_ (W)w); |
|
|
1276 | if (ev_is_active (w)) |
|
|
1277 | return; |
|
|
1278 | |
|
|
1279 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1280 | ev_stop (EV_A_ (W)w); |
|
|
1281 | } |
|
|
1282 | |
|
|
1283 | #ifndef SA_RESTART |
|
|
1284 | # define SA_RESTART 0 |
|
|
1285 | #endif |
|
|
1286 | |
|
|
1287 | void |
|
|
1288 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1289 | { |
|
|
1290 | #if EV_MULTIPLICITY |
|
|
1291 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
|
|
1292 | #endif |
|
|
1293 | if (ev_is_active (w)) |
|
|
1294 | return; |
|
|
1295 | |
|
|
1296 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1297 | |
783 | ev_start ((W)w, 1); |
1298 | ev_start (EV_A_ (W)w, 1); |
784 | array_needsize (signals, signalmax, w->signum, signals_init); |
1299 | array_needsize (signals, signalmax, w->signum, signals_init); |
785 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1300 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
786 | |
1301 | |
787 | if (!w->next) |
1302 | if (!((WL)w)->next) |
788 | { |
1303 | { |
789 | struct sigaction sa; |
1304 | struct sigaction sa; |
790 | sa.sa_handler = sighandler; |
1305 | sa.sa_handler = sighandler; |
791 | sigfillset (&sa.sa_mask); |
1306 | sigfillset (&sa.sa_mask); |
792 | sa.sa_flags = 0; |
1307 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
793 | sigaction (w->signum, &sa, 0); |
1308 | sigaction (w->signum, &sa, 0); |
794 | } |
1309 | } |
795 | } |
1310 | } |
796 | |
1311 | |
797 | void |
1312 | void |
798 | evsignal_stop (struct ev_signal *w) |
1313 | ev_signal_stop (EV_P_ struct ev_signal *w) |
799 | { |
1314 | { |
800 | ev_clear ((W)w); |
1315 | ev_clear_pending (EV_A_ (W)w); |
801 | if (!ev_is_active (w)) |
1316 | if (!ev_is_active (w)) |
802 | return; |
1317 | return; |
803 | |
1318 | |
804 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1319 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
805 | ev_stop ((W)w); |
1320 | ev_stop (EV_A_ (W)w); |
806 | |
1321 | |
807 | if (!signals [w->signum - 1].head) |
1322 | if (!signals [w->signum - 1].head) |
808 | signal (w->signum, SIG_DFL); |
1323 | signal (w->signum, SIG_DFL); |
809 | } |
1324 | } |
810 | |
1325 | |
811 | void evidle_start (struct ev_idle *w) |
1326 | void |
|
|
1327 | ev_child_start (EV_P_ struct ev_child *w) |
812 | { |
1328 | { |
|
|
1329 | #if EV_MULTIPLICITY |
|
|
1330 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1331 | #endif |
813 | if (ev_is_active (w)) |
1332 | if (ev_is_active (w)) |
814 | return; |
1333 | return; |
815 | |
1334 | |
816 | ev_start ((W)w, ++idlecnt); |
1335 | ev_start (EV_A_ (W)w, 1); |
817 | array_needsize (idles, idlemax, idlecnt, ); |
1336 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
818 | idles [idlecnt - 1] = w; |
|
|
819 | } |
1337 | } |
820 | |
1338 | |
821 | void evidle_stop (struct ev_idle *w) |
1339 | void |
|
|
1340 | ev_child_stop (EV_P_ struct ev_child *w) |
822 | { |
1341 | { |
823 | ev_clear ((W)w); |
1342 | ev_clear_pending (EV_A_ (W)w); |
824 | if (ev_is_active (w)) |
1343 | if (ev_is_active (w)) |
825 | return; |
1344 | return; |
826 | |
1345 | |
827 | idles [w->active - 1] = idles [--idlecnt]; |
1346 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
828 | ev_stop ((W)w); |
1347 | ev_stop (EV_A_ (W)w); |
829 | } |
|
|
830 | |
|
|
831 | void evcheck_start (struct ev_check *w) |
|
|
832 | { |
|
|
833 | if (ev_is_active (w)) |
|
|
834 | return; |
|
|
835 | |
|
|
836 | ev_start ((W)w, ++checkcnt); |
|
|
837 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
838 | checks [checkcnt - 1] = w; |
|
|
839 | } |
|
|
840 | |
|
|
841 | void evcheck_stop (struct ev_check *w) |
|
|
842 | { |
|
|
843 | ev_clear ((W)w); |
|
|
844 | if (ev_is_active (w)) |
|
|
845 | return; |
|
|
846 | |
|
|
847 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
848 | ev_stop ((W)w); |
|
|
849 | } |
1348 | } |
850 | |
1349 | |
851 | /*****************************************************************************/ |
1350 | /*****************************************************************************/ |
852 | |
1351 | |
853 | struct ev_once |
1352 | struct ev_once |
… | |
… | |
857 | void (*cb)(int revents, void *arg); |
1356 | void (*cb)(int revents, void *arg); |
858 | void *arg; |
1357 | void *arg; |
859 | }; |
1358 | }; |
860 | |
1359 | |
861 | static void |
1360 | static void |
862 | once_cb (struct ev_once *once, int revents) |
1361 | once_cb (EV_P_ struct ev_once *once, int revents) |
863 | { |
1362 | { |
864 | void (*cb)(int revents, void *arg) = once->cb; |
1363 | void (*cb)(int revents, void *arg) = once->cb; |
865 | void *arg = once->arg; |
1364 | void *arg = once->arg; |
866 | |
1365 | |
867 | evio_stop (&once->io); |
1366 | ev_io_stop (EV_A_ &once->io); |
868 | evtimer_stop (&once->to); |
1367 | ev_timer_stop (EV_A_ &once->to); |
869 | free (once); |
1368 | free (once); |
870 | |
1369 | |
871 | cb (revents, arg); |
1370 | cb (revents, arg); |
872 | } |
1371 | } |
873 | |
1372 | |
874 | static void |
1373 | static void |
875 | once_cb_io (struct ev_io *w, int revents) |
1374 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
876 | { |
1375 | { |
877 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1376 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
878 | } |
1377 | } |
879 | |
1378 | |
880 | static void |
1379 | static void |
881 | once_cb_to (struct ev_timer *w, int revents) |
1380 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
882 | { |
1381 | { |
883 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1382 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
884 | } |
1383 | } |
885 | |
1384 | |
886 | void |
1385 | void |
887 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1386 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
888 | { |
1387 | { |
889 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1388 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
890 | |
1389 | |
891 | if (!once) |
1390 | if (!once) |
892 | cb (EV_ERROR, arg); |
1391 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
893 | else |
1392 | else |
894 | { |
1393 | { |
895 | once->cb = cb; |
1394 | once->cb = cb; |
896 | once->arg = arg; |
1395 | once->arg = arg; |
897 | |
1396 | |
898 | evw_init (&once->io, once_cb_io); |
1397 | ev_watcher_init (&once->io, once_cb_io); |
899 | |
|
|
900 | if (fd >= 0) |
1398 | if (fd >= 0) |
901 | { |
1399 | { |
902 | evio_set (&once->io, fd, events); |
1400 | ev_io_set (&once->io, fd, events); |
903 | evio_start (&once->io); |
1401 | ev_io_start (EV_A_ &once->io); |
904 | } |
1402 | } |
905 | |
1403 | |
906 | evw_init (&once->to, once_cb_to); |
1404 | ev_watcher_init (&once->to, once_cb_to); |
907 | |
|
|
908 | if (timeout >= 0.) |
1405 | if (timeout >= 0.) |
909 | { |
1406 | { |
910 | evtimer_set (&once->to, timeout, 0.); |
1407 | ev_timer_set (&once->to, timeout, 0.); |
911 | evtimer_start (&once->to); |
1408 | ev_timer_start (EV_A_ &once->to); |
912 | } |
1409 | } |
913 | } |
1410 | } |
914 | } |
1411 | } |
915 | |
1412 | |
916 | /*****************************************************************************/ |
|
|
917 | |
|
|
918 | #if 0 |
|
|
919 | |
|
|
920 | struct ev_io wio; |
|
|
921 | |
|
|
922 | static void |
|
|
923 | sin_cb (struct ev_io *w, int revents) |
|
|
924 | { |
|
|
925 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
926 | } |
|
|
927 | |
|
|
928 | static void |
|
|
929 | ocb (struct ev_timer *w, int revents) |
|
|
930 | { |
|
|
931 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
932 | evtimer_stop (w); |
|
|
933 | evtimer_start (w); |
|
|
934 | } |
|
|
935 | |
|
|
936 | static void |
|
|
937 | scb (struct ev_signal *w, int revents) |
|
|
938 | { |
|
|
939 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
940 | evio_stop (&wio); |
|
|
941 | evio_start (&wio); |
|
|
942 | } |
|
|
943 | |
|
|
944 | static void |
|
|
945 | gcb (struct ev_signal *w, int revents) |
|
|
946 | { |
|
|
947 | fprintf (stderr, "generic %x\n", revents); |
|
|
948 | |
|
|
949 | } |
|
|
950 | |
|
|
951 | int main (void) |
|
|
952 | { |
|
|
953 | ev_init (0); |
|
|
954 | |
|
|
955 | evio_init (&wio, sin_cb, 0, EV_READ); |
|
|
956 | evio_start (&wio); |
|
|
957 | |
|
|
958 | struct ev_timer t[10000]; |
|
|
959 | |
|
|
960 | #if 0 |
|
|
961 | int i; |
|
|
962 | for (i = 0; i < 10000; ++i) |
|
|
963 | { |
|
|
964 | struct ev_timer *w = t + i; |
|
|
965 | evw_init (w, ocb, i); |
|
|
966 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
967 | evtimer_start (w); |
|
|
968 | if (drand48 () < 0.5) |
|
|
969 | evtimer_stop (w); |
|
|
970 | } |
|
|
971 | #endif |
|
|
972 | |
|
|
973 | struct ev_timer t1; |
|
|
974 | evtimer_init (&t1, ocb, 5, 10); |
|
|
975 | evtimer_start (&t1); |
|
|
976 | |
|
|
977 | struct ev_signal sig; |
|
|
978 | evsignal_init (&sig, scb, SIGQUIT); |
|
|
979 | evsignal_start (&sig); |
|
|
980 | |
|
|
981 | struct ev_check cw; |
|
|
982 | evcheck_init (&cw, gcb); |
|
|
983 | evcheck_start (&cw); |
|
|
984 | |
|
|
985 | struct ev_idle iw; |
|
|
986 | evidle_init (&iw, gcb); |
|
|
987 | evidle_start (&iw); |
|
|
988 | |
|
|
989 | ev_loop (0); |
|
|
990 | |
|
|
991 | return 0; |
|
|
992 | } |
|
|
993 | |
|
|
994 | #endif |
|
|
995 | |
|
|
996 | |
|
|
997 | |
|
|
998 | |
|
|