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 | |
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75 | /**/ |
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76 | |
44 | #ifndef HAVE_MONOTONIC |
77 | #ifndef EV_USE_MONOTONIC |
45 | # ifdef CLOCK_MONOTONIC |
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46 | # 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 |
47 | # endif |
102 | # endif |
48 | #endif |
103 | #endif |
49 | |
104 | |
50 | #ifndef HAVE_SELECT |
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51 | # define HAVE_SELECT 1 |
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52 | #endif |
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53 | |
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54 | #ifndef HAVE_EPOLL |
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55 | # define HAVE_EPOLL 0 |
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56 | #endif |
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57 | |
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58 | #ifndef HAVE_REALTIME |
105 | #ifndef EV_USE_REALTIME |
59 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
106 | # define EV_USE_REALTIME 1 |
60 | #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 | /**/ |
61 | |
122 | |
62 | #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) */ |
63 | #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 */ |
64 | |
127 | |
65 | #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) |
66 | |
143 | |
67 | typedef struct ev_watcher *W; |
144 | typedef struct ev_watcher *W; |
68 | typedef struct ev_watcher_list *WL; |
145 | typedef struct ev_watcher_list *WL; |
69 | typedef struct ev_watcher_time *WT; |
146 | typedef struct ev_watcher_time *WT; |
70 | |
147 | |
71 | static ev_tstamp now, diff; /* monotonic clock */ |
148 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
72 | ev_tstamp ev_now; |
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73 | int ev_method; |
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74 | |
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75 | static int have_monotonic; /* runtime */ |
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76 | |
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77 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
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78 | static void (*method_modify)(int fd, int oev, int nev); |
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79 | static void (*method_poll)(ev_tstamp timeout); |
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80 | |
149 | |
81 | /*****************************************************************************/ |
150 | /*****************************************************************************/ |
82 | |
151 | |
83 | 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 |
84 | ev_time (void) |
186 | ev_time (void) |
85 | { |
187 | { |
86 | #if HAVE_REALTIME |
188 | #if EV_USE_REALTIME |
87 | struct timespec ts; |
189 | struct timespec ts; |
88 | clock_gettime (CLOCK_REALTIME, &ts); |
190 | clock_gettime (CLOCK_REALTIME, &ts); |
89 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
191 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
90 | #else |
192 | #else |
91 | struct timeval tv; |
193 | struct timeval tv; |
92 | gettimeofday (&tv, 0); |
194 | gettimeofday (&tv, 0); |
93 | return tv.tv_sec + tv.tv_usec * 1e-6; |
195 | return tv.tv_sec + tv.tv_usec * 1e-6; |
94 | #endif |
196 | #endif |
95 | } |
197 | } |
96 | |
198 | |
97 | static ev_tstamp |
199 | inline ev_tstamp |
98 | get_clock (void) |
200 | get_clock (void) |
99 | { |
201 | { |
100 | #if HAVE_MONOTONIC |
202 | #if EV_USE_MONOTONIC |
101 | if (have_monotonic) |
203 | if (expect_true (have_monotonic)) |
102 | { |
204 | { |
103 | struct timespec ts; |
205 | struct timespec ts; |
104 | clock_gettime (CLOCK_MONOTONIC, &ts); |
206 | clock_gettime (CLOCK_MONOTONIC, &ts); |
105 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
207 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
106 | } |
208 | } |
107 | #endif |
209 | #endif |
108 | |
210 | |
109 | return ev_time (); |
211 | return ev_time (); |
110 | } |
212 | } |
111 | |
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 | |
112 | #define array_needsize(base,cur,cnt,init) \ |
222 | #define array_needsize(base,cur,cnt,init) \ |
113 | if ((cnt) > cur) \ |
223 | if (expect_false ((cnt) > cur)) \ |
114 | { \ |
224 | { \ |
115 | 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 | \ |
116 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
232 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
117 | init (base + cur, newcnt - cur); \ |
233 | init (base + cur, newcnt - cur); \ |
118 | cur = newcnt; \ |
234 | cur = newcnt; \ |
119 | } |
235 | } |
120 | |
236 | |
121 | /*****************************************************************************/ |
237 | /*****************************************************************************/ |
122 | |
238 | |
123 | typedef struct |
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124 | { |
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125 | struct ev_io *head; |
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126 | unsigned char wev, rev; /* want, received event set */ |
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127 | } ANFD; |
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128 | |
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129 | static ANFD *anfds; |
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130 | static int anfdmax; |
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131 | |
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132 | static int *fdchanges; |
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133 | static int fdchangemax, fdchangecnt; |
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134 | |
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135 | static void |
239 | static void |
136 | anfds_init (ANFD *base, int count) |
240 | anfds_init (ANFD *base, int count) |
137 | { |
241 | { |
138 | while (count--) |
242 | while (count--) |
139 | { |
243 | { |
140 | base->head = 0; |
244 | base->head = 0; |
141 | base->wev = base->rev = EV_NONE; |
245 | base->events = EV_NONE; |
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246 | base->reify = 0; |
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247 | |
142 | ++base; |
248 | ++base; |
143 | } |
249 | } |
144 | } |
250 | } |
145 | |
251 | |
146 | typedef struct |
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147 | { |
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148 | W w; |
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149 | int events; |
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150 | } ANPENDING; |
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151 | |
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152 | static ANPENDING *pendings; |
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153 | static int pendingmax, pendingcnt; |
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154 | |
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155 | static void |
252 | static void |
156 | event (W w, int events) |
253 | event (EV_P_ W w, int events) |
157 | { |
254 | { |
158 | if (w->active) |
255 | if (w->pending) |
159 | { |
256 | { |
160 | w->pending = ++pendingcnt; |
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161 | array_needsize (pendings, pendingmax, pendingcnt, ); |
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162 | pendings [pendingcnt - 1].w = w; |
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163 | pendings [pendingcnt - 1].events = events; |
257 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
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258 | return; |
164 | } |
259 | } |
165 | } |
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166 | |
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 | |
167 | 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 |
168 | fd_event (int fd, int events) |
277 | fd_event (EV_P_ int fd, int events) |
169 | { |
278 | { |
170 | ANFD *anfd = anfds + fd; |
279 | ANFD *anfd = anfds + fd; |
171 | struct ev_io *w; |
280 | struct ev_io *w; |
172 | |
281 | |
173 | for (w = anfd->head; w; w = w->next) |
282 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
174 | { |
283 | { |
175 | int ev = w->events & events; |
284 | int ev = w->events & events; |
176 | |
285 | |
177 | if (ev) |
286 | if (ev) |
178 | event ((W)w, ev); |
287 | event (EV_A_ (W)w, ev); |
179 | } |
288 | } |
180 | } |
289 | } |
181 | |
290 | |
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291 | /*****************************************************************************/ |
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292 | |
182 | static void |
293 | static void |
183 | queue_events (W *events, int eventcnt, int type) |
294 | fd_reify (EV_P) |
184 | { |
295 | { |
185 | int i; |
296 | int i; |
186 | |
297 | |
187 | for (i = 0; i < eventcnt; ++i) |
298 | for (i = 0; i < fdchangecnt; ++i) |
188 | 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 | method_modify (EV_A_ fd, anfd->events, events); |
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312 | anfd->events = events; |
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313 | } |
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314 | |
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315 | fdchangecnt = 0; |
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316 | } |
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317 | |
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318 | static void |
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319 | fd_change (EV_P_ int fd) |
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320 | { |
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321 | if (anfds [fd].reify || fdchangecnt < 0) |
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322 | return; |
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323 | |
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324 | anfds [fd].reify = 1; |
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325 | |
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326 | ++fdchangecnt; |
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327 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
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328 | fdchanges [fdchangecnt - 1] = fd; |
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329 | } |
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330 | |
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331 | static void |
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332 | fd_kill (EV_P_ int fd) |
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333 | { |
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334 | struct ev_io *w; |
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335 | |
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336 | while ((w = (struct ev_io *)anfds [fd].head)) |
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337 | { |
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338 | ev_io_stop (EV_A_ w); |
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339 | event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
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340 | } |
189 | } |
341 | } |
190 | |
342 | |
191 | /* called on EBADF to verify fds */ |
343 | /* called on EBADF to verify fds */ |
192 | static void |
344 | static void |
193 | fd_recheck () |
345 | fd_ebadf (EV_P) |
194 | { |
346 | { |
195 | int fd; |
347 | int fd; |
196 | |
348 | |
197 | for (fd = 0; fd < anfdmax; ++fd) |
349 | for (fd = 0; fd < anfdmax; ++fd) |
198 | if (anfds [fd].wev) |
350 | if (anfds [fd].events) |
199 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
351 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
200 | while (anfds [fd].head) |
352 | fd_kill (EV_A_ fd); |
201 | evio_stop (anfds [fd].head); |
353 | } |
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354 | |
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355 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
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356 | static void |
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357 | fd_enomem (EV_P) |
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358 | { |
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359 | int fd; |
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360 | |
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361 | for (fd = anfdmax; fd--; ) |
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362 | if (anfds [fd].events) |
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363 | { |
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364 | close (fd); |
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365 | fd_kill (EV_A_ fd); |
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366 | return; |
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367 | } |
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368 | } |
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369 | |
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370 | /* susually called after fork if method needs to re-arm all fds from scratch */ |
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371 | static void |
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372 | fd_rearm_all (EV_P) |
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373 | { |
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374 | int fd; |
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375 | |
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376 | /* this should be highly optimised to not do anything but set a flag */ |
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377 | for (fd = 0; fd < anfdmax; ++fd) |
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378 | if (anfds [fd].events) |
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379 | { |
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380 | anfds [fd].events = 0; |
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381 | fd_change (EV_A_ fd); |
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382 | } |
202 | } |
383 | } |
203 | |
384 | |
204 | /*****************************************************************************/ |
385 | /*****************************************************************************/ |
205 | |
386 | |
206 | static struct ev_timer **timers; |
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207 | static int timermax, timercnt; |
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208 | |
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209 | static struct ev_periodic **periodics; |
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210 | static int periodicmax, periodiccnt; |
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211 | |
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212 | static void |
387 | static void |
213 | upheap (WT *timers, int k) |
388 | upheap (WT *heap, int k) |
214 | { |
389 | { |
215 | WT w = timers [k]; |
390 | WT w = heap [k]; |
216 | |
391 | |
217 | while (k && timers [k >> 1]->at > w->at) |
392 | while (k && heap [k >> 1]->at > w->at) |
218 | { |
393 | { |
219 | timers [k] = timers [k >> 1]; |
394 | heap [k] = heap [k >> 1]; |
220 | timers [k]->active = k + 1; |
395 | ((W)heap [k])->active = k + 1; |
221 | k >>= 1; |
396 | k >>= 1; |
222 | } |
397 | } |
223 | |
398 | |
224 | timers [k] = w; |
399 | heap [k] = w; |
225 | timers [k]->active = k + 1; |
400 | ((W)heap [k])->active = k + 1; |
226 | |
401 | |
227 | } |
402 | } |
228 | |
403 | |
229 | static void |
404 | static void |
230 | downheap (WT *timers, int N, int k) |
405 | downheap (WT *heap, int N, int k) |
231 | { |
406 | { |
232 | WT w = timers [k]; |
407 | WT w = heap [k]; |
233 | |
408 | |
234 | while (k < (N >> 1)) |
409 | while (k < (N >> 1)) |
235 | { |
410 | { |
236 | int j = k << 1; |
411 | int j = k << 1; |
237 | |
412 | |
238 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
413 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
239 | ++j; |
414 | ++j; |
240 | |
415 | |
241 | if (w->at <= timers [j]->at) |
416 | if (w->at <= heap [j]->at) |
242 | break; |
417 | break; |
243 | |
418 | |
244 | timers [k] = timers [j]; |
419 | heap [k] = heap [j]; |
245 | timers [k]->active = k + 1; |
420 | ((W)heap [k])->active = k + 1; |
246 | k = j; |
421 | k = j; |
247 | } |
422 | } |
248 | |
423 | |
249 | timers [k] = w; |
424 | heap [k] = w; |
250 | timers [k]->active = k + 1; |
425 | ((W)heap [k])->active = k + 1; |
251 | } |
426 | } |
252 | |
427 | |
253 | /*****************************************************************************/ |
428 | /*****************************************************************************/ |
254 | |
429 | |
255 | typedef struct |
430 | typedef struct |
256 | { |
431 | { |
257 | struct ev_signal *head; |
432 | struct ev_watcher_list *head; |
258 | sig_atomic_t gotsig; |
433 | sig_atomic_t volatile gotsig; |
259 | } ANSIG; |
434 | } ANSIG; |
260 | |
435 | |
261 | static ANSIG *signals; |
436 | static ANSIG *signals; |
262 | static int signalmax; |
437 | static int signalmax; |
263 | |
438 | |
264 | static int sigpipe [2]; |
439 | static int sigpipe [2]; |
265 | static sig_atomic_t gotsig; |
440 | static sig_atomic_t volatile gotsig; |
266 | static struct ev_io sigev; |
441 | static struct ev_io sigev; |
267 | |
442 | |
268 | static void |
443 | static void |
269 | signals_init (ANSIG *base, int count) |
444 | signals_init (ANSIG *base, int count) |
270 | { |
445 | { |
271 | while (count--) |
446 | while (count--) |
272 | { |
447 | { |
273 | base->head = 0; |
448 | base->head = 0; |
274 | base->gotsig = 0; |
449 | base->gotsig = 0; |
|
|
450 | |
275 | ++base; |
451 | ++base; |
276 | } |
452 | } |
277 | } |
453 | } |
278 | |
454 | |
279 | static void |
455 | static void |
… | |
… | |
281 | { |
457 | { |
282 | signals [signum - 1].gotsig = 1; |
458 | signals [signum - 1].gotsig = 1; |
283 | |
459 | |
284 | if (!gotsig) |
460 | if (!gotsig) |
285 | { |
461 | { |
|
|
462 | int old_errno = errno; |
286 | gotsig = 1; |
463 | gotsig = 1; |
287 | write (sigpipe [1], &gotsig, 1); |
464 | write (sigpipe [1], &signum, 1); |
|
|
465 | errno = old_errno; |
288 | } |
466 | } |
289 | } |
467 | } |
290 | |
468 | |
291 | static void |
469 | static void |
292 | sigcb (struct ev_io *iow, int revents) |
470 | sigcb (EV_P_ struct ev_io *iow, int revents) |
293 | { |
471 | { |
294 | struct ev_signal *w; |
472 | struct ev_watcher_list *w; |
295 | int sig; |
473 | int signum; |
296 | |
474 | |
|
|
475 | read (sigpipe [0], &revents, 1); |
297 | gotsig = 0; |
476 | gotsig = 0; |
298 | read (sigpipe [0], &revents, 1); |
|
|
299 | |
477 | |
300 | for (sig = signalmax; sig--; ) |
478 | for (signum = signalmax; signum--; ) |
301 | if (signals [sig].gotsig) |
479 | if (signals [signum].gotsig) |
302 | { |
480 | { |
303 | signals [sig].gotsig = 0; |
481 | signals [signum].gotsig = 0; |
304 | |
482 | |
305 | for (w = signals [sig].head; w; w = w->next) |
483 | for (w = signals [signum].head; w; w = w->next) |
306 | event ((W)w, EV_SIGNAL); |
484 | event (EV_A_ (W)w, EV_SIGNAL); |
307 | } |
485 | } |
308 | } |
486 | } |
309 | |
487 | |
310 | static void |
488 | static void |
311 | siginit (void) |
489 | siginit (EV_P) |
312 | { |
490 | { |
|
|
491 | #ifndef WIN32 |
313 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
492 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
314 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
493 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
315 | |
494 | |
316 | /* rather than sort out wether we really need nb, set it */ |
495 | /* rather than sort out wether we really need nb, set it */ |
317 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
496 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
318 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
497 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
498 | #endif |
319 | |
499 | |
320 | evio_set (&sigev, sigpipe [0], EV_READ); |
500 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
321 | evio_start (&sigev); |
501 | ev_io_start (EV_A_ &sigev); |
|
|
502 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
322 | } |
503 | } |
323 | |
504 | |
324 | /*****************************************************************************/ |
505 | /*****************************************************************************/ |
325 | |
506 | |
326 | static struct ev_idle **idles; |
507 | #ifndef WIN32 |
327 | static int idlemax, idlecnt; |
|
|
328 | |
508 | |
329 | static struct ev_prepare **prepares; |
509 | static struct ev_child *childs [PID_HASHSIZE]; |
330 | static int preparemax, preparecnt; |
510 | static struct ev_signal childev; |
331 | |
511 | |
332 | static struct ev_check **checks; |
512 | #ifndef WCONTINUED |
333 | static int checkmax, checkcnt; |
513 | # define WCONTINUED 0 |
|
|
514 | #endif |
|
|
515 | |
|
|
516 | static void |
|
|
517 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
518 | { |
|
|
519 | struct ev_child *w; |
|
|
520 | |
|
|
521 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
522 | if (w->pid == pid || !w->pid) |
|
|
523 | { |
|
|
524 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
525 | w->rpid = pid; |
|
|
526 | w->rstatus = status; |
|
|
527 | event (EV_A_ (W)w, EV_CHILD); |
|
|
528 | } |
|
|
529 | } |
|
|
530 | |
|
|
531 | static void |
|
|
532 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
533 | { |
|
|
534 | int pid, status; |
|
|
535 | |
|
|
536 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
537 | { |
|
|
538 | /* make sure we are called again until all childs have been reaped */ |
|
|
539 | event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
540 | |
|
|
541 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
542 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
543 | } |
|
|
544 | } |
|
|
545 | |
|
|
546 | #endif |
334 | |
547 | |
335 | /*****************************************************************************/ |
548 | /*****************************************************************************/ |
336 | |
549 | |
|
|
550 | #if EV_USE_KQUEUE |
|
|
551 | # include "ev_kqueue.c" |
|
|
552 | #endif |
337 | #if HAVE_EPOLL |
553 | #if EV_USE_EPOLL |
338 | # include "ev_epoll.c" |
554 | # include "ev_epoll.c" |
339 | #endif |
555 | #endif |
|
|
556 | #if EV_USE_POLL |
|
|
557 | # include "ev_poll.c" |
|
|
558 | #endif |
340 | #if HAVE_SELECT |
559 | #if EV_USE_SELECT |
341 | # include "ev_select.c" |
560 | # include "ev_select.c" |
342 | #endif |
561 | #endif |
343 | |
562 | |
344 | int ev_init (int flags) |
563 | int |
|
|
564 | ev_version_major (void) |
345 | { |
565 | { |
|
|
566 | return EV_VERSION_MAJOR; |
|
|
567 | } |
|
|
568 | |
|
|
569 | int |
|
|
570 | ev_version_minor (void) |
|
|
571 | { |
|
|
572 | return EV_VERSION_MINOR; |
|
|
573 | } |
|
|
574 | |
|
|
575 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
576 | static int |
|
|
577 | enable_secure (void) |
|
|
578 | { |
|
|
579 | #ifdef WIN32 |
|
|
580 | return 0; |
|
|
581 | #else |
|
|
582 | return getuid () != geteuid () |
|
|
583 | || getgid () != getegid (); |
|
|
584 | #endif |
|
|
585 | } |
|
|
586 | |
|
|
587 | int |
|
|
588 | ev_method (EV_P) |
|
|
589 | { |
|
|
590 | return method; |
|
|
591 | } |
|
|
592 | |
|
|
593 | static void |
|
|
594 | loop_init (EV_P_ int methods) |
|
|
595 | { |
|
|
596 | if (!method) |
|
|
597 | { |
346 | #if HAVE_MONOTONIC |
598 | #if EV_USE_MONOTONIC |
347 | { |
599 | { |
348 | struct timespec ts; |
600 | struct timespec ts; |
349 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
601 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
350 | have_monotonic = 1; |
602 | have_monotonic = 1; |
351 | } |
603 | } |
352 | #endif |
604 | #endif |
353 | |
605 | |
354 | ev_now = ev_time (); |
606 | rt_now = ev_time (); |
355 | now = get_clock (); |
607 | mn_now = get_clock (); |
356 | diff = ev_now - now; |
608 | now_floor = mn_now; |
|
|
609 | rtmn_diff = rt_now - mn_now; |
357 | |
610 | |
|
|
611 | if (methods == EVMETHOD_AUTO) |
|
|
612 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
613 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
614 | else |
|
|
615 | methods = EVMETHOD_ANY; |
|
|
616 | |
|
|
617 | method = 0; |
|
|
618 | #if EV_USE_WIN32 |
|
|
619 | if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); |
|
|
620 | #endif |
|
|
621 | #if EV_USE_KQUEUE |
|
|
622 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
623 | #endif |
|
|
624 | #if EV_USE_EPOLL |
|
|
625 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
626 | #endif |
|
|
627 | #if EV_USE_POLL |
|
|
628 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
629 | #endif |
|
|
630 | #if EV_USE_SELECT |
|
|
631 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
|
|
632 | #endif |
|
|
633 | } |
|
|
634 | } |
|
|
635 | |
|
|
636 | void |
|
|
637 | loop_destroy (EV_P) |
|
|
638 | { |
|
|
639 | #if EV_USE_WIN32 |
|
|
640 | if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); |
|
|
641 | #endif |
|
|
642 | #if EV_USE_KQUEUE |
|
|
643 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
644 | #endif |
|
|
645 | #if EV_USE_EPOLL |
|
|
646 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
647 | #endif |
|
|
648 | #if EV_USE_POLL |
|
|
649 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
650 | #endif |
|
|
651 | #if EV_USE_SELECT |
|
|
652 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
653 | #endif |
|
|
654 | |
|
|
655 | method = 0; |
|
|
656 | /*TODO*/ |
|
|
657 | } |
|
|
658 | |
|
|
659 | void |
|
|
660 | loop_fork (EV_P) |
|
|
661 | { |
|
|
662 | /*TODO*/ |
|
|
663 | #if EV_USE_EPOLL |
|
|
664 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
665 | #endif |
|
|
666 | #if EV_USE_KQUEUE |
|
|
667 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
668 | #endif |
|
|
669 | } |
|
|
670 | |
|
|
671 | #if EV_MULTIPLICITY |
|
|
672 | struct ev_loop * |
|
|
673 | ev_loop_new (int methods) |
|
|
674 | { |
|
|
675 | struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); |
|
|
676 | |
|
|
677 | loop_init (EV_A_ methods); |
|
|
678 | |
|
|
679 | if (ev_method (EV_A)) |
|
|
680 | return loop; |
|
|
681 | |
|
|
682 | return 0; |
|
|
683 | } |
|
|
684 | |
|
|
685 | void |
|
|
686 | ev_loop_destroy (EV_P) |
|
|
687 | { |
|
|
688 | loop_destroy (EV_A); |
|
|
689 | free (loop); |
|
|
690 | } |
|
|
691 | |
|
|
692 | void |
|
|
693 | ev_loop_fork (EV_P) |
|
|
694 | { |
|
|
695 | loop_fork (EV_A); |
|
|
696 | } |
|
|
697 | |
|
|
698 | #endif |
|
|
699 | |
|
|
700 | #if EV_MULTIPLICITY |
|
|
701 | struct ev_loop default_loop_struct; |
|
|
702 | static struct ev_loop *default_loop; |
|
|
703 | |
|
|
704 | struct ev_loop * |
|
|
705 | #else |
|
|
706 | static int default_loop; |
|
|
707 | |
|
|
708 | int |
|
|
709 | #endif |
|
|
710 | ev_default_loop (int methods) |
|
|
711 | { |
|
|
712 | if (sigpipe [0] == sigpipe [1]) |
358 | if (pipe (sigpipe)) |
713 | if (pipe (sigpipe)) |
359 | return 0; |
714 | return 0; |
360 | |
715 | |
361 | ev_method = EVMETHOD_NONE; |
716 | if (!default_loop) |
362 | #if HAVE_EPOLL |
|
|
363 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
364 | #endif |
|
|
365 | #if HAVE_SELECT |
|
|
366 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
367 | #endif |
|
|
368 | |
|
|
369 | if (ev_method) |
|
|
370 | { |
717 | { |
|
|
718 | #if EV_MULTIPLICITY |
|
|
719 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
720 | #else |
|
|
721 | default_loop = 1; |
|
|
722 | #endif |
|
|
723 | |
|
|
724 | loop_init (EV_A_ methods); |
|
|
725 | |
|
|
726 | if (ev_method (EV_A)) |
|
|
727 | { |
371 | evw_init (&sigev, sigcb); |
728 | ev_watcher_init (&sigev, sigcb); |
|
|
729 | ev_set_priority (&sigev, EV_MAXPRI); |
372 | siginit (); |
730 | siginit (EV_A); |
373 | } |
|
|
374 | |
731 | |
375 | return ev_method; |
732 | #ifndef WIN32 |
376 | } |
733 | ev_signal_init (&childev, childcb, SIGCHLD); |
377 | |
734 | ev_set_priority (&childev, EV_MAXPRI); |
378 | /*****************************************************************************/ |
735 | ev_signal_start (EV_A_ &childev); |
379 | |
736 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
380 | void ev_prefork (void) |
|
|
381 | { |
|
|
382 | /* nop */ |
|
|
383 | } |
|
|
384 | |
|
|
385 | void ev_postfork_parent (void) |
|
|
386 | { |
|
|
387 | /* nop */ |
|
|
388 | } |
|
|
389 | |
|
|
390 | void ev_postfork_child (void) |
|
|
391 | { |
|
|
392 | #if HAVE_EPOLL |
|
|
393 | if (ev_method == EVMETHOD_EPOLL) |
|
|
394 | epoll_postfork_child (); |
|
|
395 | #endif |
737 | #endif |
|
|
738 | } |
|
|
739 | else |
|
|
740 | default_loop = 0; |
|
|
741 | } |
396 | |
742 | |
|
|
743 | return default_loop; |
|
|
744 | } |
|
|
745 | |
|
|
746 | void |
|
|
747 | ev_default_destroy (void) |
|
|
748 | { |
|
|
749 | #if EV_MULTIPLICITY |
|
|
750 | struct ev_loop *loop = default_loop; |
|
|
751 | #endif |
|
|
752 | |
|
|
753 | ev_ref (EV_A); /* child watcher */ |
|
|
754 | ev_signal_stop (EV_A_ &childev); |
|
|
755 | |
|
|
756 | ev_ref (EV_A); /* signal watcher */ |
397 | evio_stop (&sigev); |
757 | ev_io_stop (EV_A_ &sigev); |
|
|
758 | |
|
|
759 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
760 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
761 | |
|
|
762 | loop_destroy (EV_A); |
|
|
763 | } |
|
|
764 | |
|
|
765 | void |
|
|
766 | ev_default_fork (void) |
|
|
767 | { |
|
|
768 | #if EV_MULTIPLICITY |
|
|
769 | struct ev_loop *loop = default_loop; |
|
|
770 | #endif |
|
|
771 | |
|
|
772 | loop_fork (EV_A); |
|
|
773 | |
|
|
774 | ev_io_stop (EV_A_ &sigev); |
398 | close (sigpipe [0]); |
775 | close (sigpipe [0]); |
399 | close (sigpipe [1]); |
776 | close (sigpipe [1]); |
400 | pipe (sigpipe); |
777 | pipe (sigpipe); |
|
|
778 | |
|
|
779 | ev_ref (EV_A); /* signal watcher */ |
401 | siginit (); |
780 | siginit (EV_A); |
402 | } |
781 | } |
403 | |
782 | |
404 | /*****************************************************************************/ |
783 | /*****************************************************************************/ |
405 | |
784 | |
406 | static void |
785 | static void |
407 | fd_reify (void) |
786 | call_pending (EV_P) |
408 | { |
787 | { |
409 | int i; |
788 | int pri; |
410 | |
789 | |
411 | for (i = 0; i < fdchangecnt; ++i) |
790 | for (pri = NUMPRI; pri--; ) |
412 | { |
791 | while (pendingcnt [pri]) |
413 | int fd = fdchanges [i]; |
|
|
414 | ANFD *anfd = anfds + fd; |
|
|
415 | struct ev_io *w; |
|
|
416 | |
|
|
417 | int wev = 0; |
|
|
418 | |
|
|
419 | for (w = anfd->head; w; w = w->next) |
|
|
420 | wev |= w->events; |
|
|
421 | |
|
|
422 | if (anfd->wev != wev) |
|
|
423 | { |
792 | { |
424 | method_modify (fd, anfd->wev, wev); |
|
|
425 | anfd->wev = wev; |
|
|
426 | } |
|
|
427 | } |
|
|
428 | |
|
|
429 | fdchangecnt = 0; |
|
|
430 | } |
|
|
431 | |
|
|
432 | static void |
|
|
433 | call_pending () |
|
|
434 | { |
|
|
435 | while (pendingcnt) |
|
|
436 | { |
|
|
437 | ANPENDING *p = pendings + --pendingcnt; |
793 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
438 | |
794 | |
439 | if (p->w) |
795 | if (p->w) |
440 | { |
796 | { |
441 | p->w->pending = 0; |
797 | p->w->pending = 0; |
442 | p->w->cb (p->w, p->events); |
798 | |
|
|
799 | (*(void (**)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events); |
443 | } |
800 | } |
444 | } |
801 | } |
445 | } |
802 | } |
446 | |
803 | |
447 | static void |
804 | static void |
448 | timers_reify () |
805 | timers_reify (EV_P) |
449 | { |
806 | { |
450 | while (timercnt && timers [0]->at <= now) |
807 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
451 | { |
808 | { |
452 | struct ev_timer *w = timers [0]; |
809 | struct ev_timer *w = timers [0]; |
453 | |
810 | |
454 | event ((W)w, EV_TIMEOUT); |
811 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
455 | |
812 | |
456 | /* first reschedule or stop timer */ |
813 | /* first reschedule or stop timer */ |
457 | if (w->repeat) |
814 | if (w->repeat) |
458 | { |
815 | { |
|
|
816 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
459 | w->at = now + w->repeat; |
817 | ((WT)w)->at = mn_now + w->repeat; |
460 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
|
|
461 | downheap ((WT *)timers, timercnt, 0); |
818 | downheap ((WT *)timers, timercnt, 0); |
462 | } |
819 | } |
463 | else |
820 | else |
464 | evtimer_stop (w); /* nonrepeating: stop timer */ |
821 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
465 | } |
|
|
466 | } |
|
|
467 | |
822 | |
|
|
823 | event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
824 | } |
|
|
825 | } |
|
|
826 | |
468 | static void |
827 | static void |
469 | periodics_reify () |
828 | periodics_reify (EV_P) |
470 | { |
829 | { |
471 | while (periodiccnt && periodics [0]->at <= ev_now) |
830 | while (periodiccnt && ((WT)periodics [0])->at <= rt_now) |
472 | { |
831 | { |
473 | struct ev_periodic *w = periodics [0]; |
832 | struct ev_periodic *w = periodics [0]; |
|
|
833 | |
|
|
834 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
474 | |
835 | |
475 | /* first reschedule or stop timer */ |
836 | /* first reschedule or stop timer */ |
476 | if (w->interval) |
837 | if (w->interval) |
477 | { |
838 | { |
478 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
839 | ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
479 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
840 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); |
480 | downheap ((WT *)periodics, periodiccnt, 0); |
841 | downheap ((WT *)periodics, periodiccnt, 0); |
481 | } |
842 | } |
482 | else |
843 | else |
483 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
844 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
484 | |
845 | |
485 | event ((W)w, EV_TIMEOUT); |
846 | event (EV_A_ (W)w, EV_PERIODIC); |
486 | } |
847 | } |
487 | } |
848 | } |
488 | |
849 | |
489 | static void |
850 | static void |
490 | periodics_reschedule (ev_tstamp diff) |
851 | periodics_reschedule (EV_P) |
491 | { |
852 | { |
492 | int i; |
853 | int i; |
493 | |
854 | |
494 | /* adjust periodics after time jump */ |
855 | /* adjust periodics after time jump */ |
495 | for (i = 0; i < periodiccnt; ++i) |
856 | for (i = 0; i < periodiccnt; ++i) |
496 | { |
857 | { |
497 | struct ev_periodic *w = periodics [i]; |
858 | struct ev_periodic *w = periodics [i]; |
498 | |
859 | |
499 | if (w->interval) |
860 | if (w->interval) |
500 | { |
861 | { |
501 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
862 | ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
502 | |
863 | |
503 | if (fabs (diff) >= 1e-4) |
864 | if (fabs (diff) >= 1e-4) |
504 | { |
865 | { |
505 | evperiodic_stop (w); |
866 | ev_periodic_stop (EV_A_ w); |
506 | evperiodic_start (w); |
867 | ev_periodic_start (EV_A_ w); |
507 | |
868 | |
508 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
869 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
509 | } |
870 | } |
510 | } |
871 | } |
511 | } |
872 | } |
512 | } |
873 | } |
513 | |
874 | |
|
|
875 | inline int |
|
|
876 | time_update_monotonic (EV_P) |
|
|
877 | { |
|
|
878 | mn_now = get_clock (); |
|
|
879 | |
|
|
880 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
881 | { |
|
|
882 | rt_now = rtmn_diff + mn_now; |
|
|
883 | return 0; |
|
|
884 | } |
|
|
885 | else |
|
|
886 | { |
|
|
887 | now_floor = mn_now; |
|
|
888 | rt_now = ev_time (); |
|
|
889 | return 1; |
|
|
890 | } |
|
|
891 | } |
|
|
892 | |
514 | static void |
893 | static void |
515 | time_update () |
894 | time_update (EV_P) |
516 | { |
895 | { |
517 | int i; |
896 | int i; |
518 | |
897 | |
519 | ev_now = ev_time (); |
898 | #if EV_USE_MONOTONIC |
520 | |
|
|
521 | if (have_monotonic) |
899 | if (expect_true (have_monotonic)) |
522 | { |
900 | { |
523 | ev_tstamp odiff = diff; |
901 | if (time_update_monotonic (EV_A)) |
524 | |
|
|
525 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
526 | { |
902 | { |
527 | now = get_clock (); |
903 | ev_tstamp odiff = rtmn_diff; |
|
|
904 | |
|
|
905 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
906 | { |
528 | diff = ev_now - now; |
907 | rtmn_diff = rt_now - mn_now; |
529 | |
908 | |
530 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
909 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
531 | return; /* all is well */ |
910 | return; /* all is well */ |
532 | |
911 | |
533 | ev_now = ev_time (); |
912 | rt_now = ev_time (); |
|
|
913 | mn_now = get_clock (); |
|
|
914 | now_floor = mn_now; |
|
|
915 | } |
|
|
916 | |
|
|
917 | periodics_reschedule (EV_A); |
|
|
918 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
919 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
534 | } |
920 | } |
535 | |
|
|
536 | periodics_reschedule (diff - odiff); |
|
|
537 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
538 | } |
921 | } |
539 | else |
922 | else |
|
|
923 | #endif |
540 | { |
924 | { |
541 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
925 | rt_now = ev_time (); |
|
|
926 | |
|
|
927 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
542 | { |
928 | { |
543 | periodics_reschedule (ev_now - now); |
929 | periodics_reschedule (EV_A); |
544 | |
930 | |
545 | /* adjust timers. this is easy, as the offset is the same for all */ |
931 | /* adjust timers. this is easy, as the offset is the same for all */ |
546 | for (i = 0; i < timercnt; ++i) |
932 | for (i = 0; i < timercnt; ++i) |
547 | timers [i]->at += diff; |
933 | ((WT)timers [i])->at += rt_now - mn_now; |
548 | } |
934 | } |
549 | |
935 | |
550 | now = ev_now; |
936 | mn_now = rt_now; |
551 | } |
937 | } |
552 | } |
938 | } |
553 | |
939 | |
554 | int ev_loop_done; |
940 | void |
|
|
941 | ev_ref (EV_P) |
|
|
942 | { |
|
|
943 | ++activecnt; |
|
|
944 | } |
555 | |
945 | |
|
|
946 | void |
|
|
947 | ev_unref (EV_P) |
|
|
948 | { |
|
|
949 | --activecnt; |
|
|
950 | } |
|
|
951 | |
|
|
952 | static int loop_done; |
|
|
953 | |
|
|
954 | void |
556 | void ev_loop (int flags) |
955 | ev_loop (EV_P_ int flags) |
557 | { |
956 | { |
558 | double block; |
957 | double block; |
559 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
958 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
560 | |
959 | |
561 | do |
960 | do |
562 | { |
961 | { |
563 | /* queue check watchers (and execute them) */ |
962 | /* queue check watchers (and execute them) */ |
564 | if (preparecnt) |
963 | if (expect_false (preparecnt)) |
565 | { |
964 | { |
566 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
965 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
567 | call_pending (); |
966 | call_pending (EV_A); |
568 | } |
967 | } |
569 | |
968 | |
570 | /* update fd-related kernel structures */ |
969 | /* update fd-related kernel structures */ |
571 | fd_reify (); |
970 | fd_reify (EV_A); |
572 | |
971 | |
573 | /* calculate blocking time */ |
972 | /* calculate blocking time */ |
574 | |
973 | |
575 | /* we only need this for !monotonic clockor timers, but as we basically |
974 | /* we only need this for !monotonic clockor timers, but as we basically |
576 | always have timers, we just calculate it always */ |
975 | always have timers, we just calculate it always */ |
|
|
976 | #if EV_USE_MONOTONIC |
|
|
977 | if (expect_true (have_monotonic)) |
|
|
978 | time_update_monotonic (EV_A); |
|
|
979 | else |
|
|
980 | #endif |
|
|
981 | { |
577 | ev_now = ev_time (); |
982 | rt_now = ev_time (); |
|
|
983 | mn_now = rt_now; |
|
|
984 | } |
578 | |
985 | |
579 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
986 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
580 | block = 0.; |
987 | block = 0.; |
581 | else |
988 | else |
582 | { |
989 | { |
583 | block = MAX_BLOCKTIME; |
990 | block = MAX_BLOCKTIME; |
584 | |
991 | |
585 | if (timercnt) |
992 | if (timercnt) |
586 | { |
993 | { |
587 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
994 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
588 | if (block > to) block = to; |
995 | if (block > to) block = to; |
589 | } |
996 | } |
590 | |
997 | |
591 | if (periodiccnt) |
998 | if (periodiccnt) |
592 | { |
999 | { |
593 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1000 | ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; |
594 | if (block > to) block = to; |
1001 | if (block > to) block = to; |
595 | } |
1002 | } |
596 | |
1003 | |
597 | if (block < 0.) block = 0.; |
1004 | if (block < 0.) block = 0.; |
598 | } |
1005 | } |
599 | |
1006 | |
600 | method_poll (block); |
1007 | method_poll (EV_A_ block); |
601 | |
1008 | |
602 | /* update ev_now, do magic */ |
1009 | /* update rt_now, do magic */ |
603 | time_update (); |
1010 | time_update (EV_A); |
604 | |
1011 | |
605 | /* queue pending timers and reschedule them */ |
1012 | /* queue pending timers and reschedule them */ |
606 | timers_reify (); /* relative timers called last */ |
1013 | timers_reify (EV_A); /* relative timers called last */ |
607 | periodics_reify (); /* absolute timers called first */ |
1014 | periodics_reify (EV_A); /* absolute timers called first */ |
608 | |
1015 | |
609 | /* queue idle watchers unless io or timers are pending */ |
1016 | /* queue idle watchers unless io or timers are pending */ |
610 | if (!pendingcnt) |
1017 | if (!pendingcnt) |
611 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1018 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
612 | |
1019 | |
613 | /* queue check watchers, to be executed first */ |
1020 | /* queue check watchers, to be executed first */ |
614 | if (checkcnt) |
1021 | if (checkcnt) |
615 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1022 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
616 | |
1023 | |
617 | call_pending (); |
1024 | call_pending (EV_A); |
618 | } |
1025 | } |
619 | while (!ev_loop_done); |
1026 | while (activecnt && !loop_done); |
620 | |
1027 | |
621 | if (ev_loop_done != 2) |
1028 | if (loop_done != 2) |
622 | ev_loop_done = 0; |
1029 | loop_done = 0; |
|
|
1030 | } |
|
|
1031 | |
|
|
1032 | void |
|
|
1033 | ev_unloop (EV_P_ int how) |
|
|
1034 | { |
|
|
1035 | loop_done = how; |
623 | } |
1036 | } |
624 | |
1037 | |
625 | /*****************************************************************************/ |
1038 | /*****************************************************************************/ |
626 | |
1039 | |
627 | static void |
1040 | inline void |
628 | wlist_add (WL *head, WL elem) |
1041 | wlist_add (WL *head, WL elem) |
629 | { |
1042 | { |
630 | elem->next = *head; |
1043 | elem->next = *head; |
631 | *head = elem; |
1044 | *head = elem; |
632 | } |
1045 | } |
633 | |
1046 | |
634 | static void |
1047 | inline void |
635 | wlist_del (WL *head, WL elem) |
1048 | wlist_del (WL *head, WL elem) |
636 | { |
1049 | { |
637 | while (*head) |
1050 | while (*head) |
638 | { |
1051 | { |
639 | if (*head == elem) |
1052 | if (*head == elem) |
… | |
… | |
644 | |
1057 | |
645 | head = &(*head)->next; |
1058 | head = &(*head)->next; |
646 | } |
1059 | } |
647 | } |
1060 | } |
648 | |
1061 | |
649 | static void |
1062 | inline void |
650 | ev_clear (W w) |
1063 | ev_clear_pending (EV_P_ W w) |
651 | { |
1064 | { |
652 | if (w->pending) |
1065 | if (w->pending) |
653 | { |
1066 | { |
654 | pendings [w->pending - 1].w = 0; |
1067 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
655 | w->pending = 0; |
1068 | w->pending = 0; |
656 | } |
1069 | } |
657 | } |
1070 | } |
658 | |
1071 | |
659 | static void |
1072 | inline void |
660 | ev_start (W w, int active) |
1073 | ev_start (EV_P_ W w, int active) |
661 | { |
1074 | { |
|
|
1075 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1076 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1077 | |
662 | w->active = active; |
1078 | w->active = active; |
|
|
1079 | ev_ref (EV_A); |
663 | } |
1080 | } |
664 | |
1081 | |
665 | static void |
1082 | inline void |
666 | ev_stop (W w) |
1083 | ev_stop (EV_P_ W w) |
667 | { |
1084 | { |
|
|
1085 | ev_unref (EV_A); |
668 | w->active = 0; |
1086 | w->active = 0; |
669 | } |
1087 | } |
670 | |
1088 | |
671 | /*****************************************************************************/ |
1089 | /*****************************************************************************/ |
672 | |
1090 | |
673 | void |
1091 | void |
674 | evio_start (struct ev_io *w) |
1092 | ev_io_start (EV_P_ struct ev_io *w) |
675 | { |
1093 | { |
|
|
1094 | int fd = w->fd; |
|
|
1095 | |
676 | if (ev_is_active (w)) |
1096 | if (ev_is_active (w)) |
677 | return; |
1097 | return; |
678 | |
1098 | |
679 | int fd = w->fd; |
1099 | assert (("ev_io_start called with negative fd", fd >= 0)); |
680 | |
1100 | |
681 | ev_start ((W)w, 1); |
1101 | ev_start (EV_A_ (W)w, 1); |
682 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1102 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
683 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1103 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
684 | |
1104 | |
685 | ++fdchangecnt; |
1105 | fd_change (EV_A_ fd); |
686 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
687 | fdchanges [fdchangecnt - 1] = fd; |
|
|
688 | } |
1106 | } |
689 | |
1107 | |
690 | void |
1108 | void |
691 | evio_stop (struct ev_io *w) |
1109 | ev_io_stop (EV_P_ struct ev_io *w) |
692 | { |
1110 | { |
693 | ev_clear ((W)w); |
1111 | ev_clear_pending (EV_A_ (W)w); |
694 | if (!ev_is_active (w)) |
1112 | if (!ev_is_active (w)) |
695 | return; |
1113 | return; |
696 | |
1114 | |
697 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1115 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
698 | ev_stop ((W)w); |
1116 | ev_stop (EV_A_ (W)w); |
699 | |
1117 | |
700 | ++fdchangecnt; |
1118 | fd_change (EV_A_ w->fd); |
701 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
702 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
703 | } |
1119 | } |
704 | |
1120 | |
705 | void |
1121 | void |
706 | evtimer_start (struct ev_timer *w) |
1122 | ev_timer_start (EV_P_ struct ev_timer *w) |
707 | { |
1123 | { |
708 | if (ev_is_active (w)) |
1124 | if (ev_is_active (w)) |
709 | return; |
1125 | return; |
710 | |
1126 | |
711 | w->at += now; |
1127 | ((WT)w)->at += mn_now; |
712 | |
1128 | |
713 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1129 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
714 | |
1130 | |
715 | ev_start ((W)w, ++timercnt); |
1131 | ev_start (EV_A_ (W)w, ++timercnt); |
716 | array_needsize (timers, timermax, timercnt, ); |
1132 | array_needsize (timers, timermax, timercnt, ); |
717 | timers [timercnt - 1] = w; |
1133 | timers [timercnt - 1] = w; |
718 | upheap ((WT *)timers, timercnt - 1); |
1134 | upheap ((WT *)timers, timercnt - 1); |
719 | } |
|
|
720 | |
1135 | |
|
|
1136 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1137 | } |
|
|
1138 | |
721 | void |
1139 | void |
722 | evtimer_stop (struct ev_timer *w) |
1140 | ev_timer_stop (EV_P_ struct ev_timer *w) |
723 | { |
1141 | { |
724 | ev_clear ((W)w); |
1142 | ev_clear_pending (EV_A_ (W)w); |
725 | if (!ev_is_active (w)) |
1143 | if (!ev_is_active (w)) |
726 | return; |
1144 | return; |
727 | |
1145 | |
|
|
1146 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1147 | |
728 | if (w->active < timercnt--) |
1148 | if (((W)w)->active < timercnt--) |
729 | { |
1149 | { |
730 | timers [w->active - 1] = timers [timercnt]; |
1150 | timers [((W)w)->active - 1] = timers [timercnt]; |
731 | downheap ((WT *)timers, timercnt, w->active - 1); |
1151 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
732 | } |
1152 | } |
733 | |
1153 | |
734 | w->at = w->repeat; |
1154 | ((WT)w)->at = w->repeat; |
735 | |
1155 | |
736 | ev_stop ((W)w); |
1156 | ev_stop (EV_A_ (W)w); |
737 | } |
1157 | } |
738 | |
1158 | |
739 | void |
1159 | void |
740 | evtimer_again (struct ev_timer *w) |
1160 | ev_timer_again (EV_P_ struct ev_timer *w) |
741 | { |
1161 | { |
742 | if (ev_is_active (w)) |
1162 | if (ev_is_active (w)) |
743 | { |
1163 | { |
744 | if (w->repeat) |
1164 | if (w->repeat) |
745 | { |
1165 | { |
746 | w->at = now + w->repeat; |
1166 | ((WT)w)->at = mn_now + w->repeat; |
747 | downheap ((WT *)timers, timercnt, w->active - 1); |
1167 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
748 | } |
1168 | } |
749 | else |
1169 | else |
750 | evtimer_stop (w); |
1170 | ev_timer_stop (EV_A_ w); |
751 | } |
1171 | } |
752 | else if (w->repeat) |
1172 | else if (w->repeat) |
753 | evtimer_start (w); |
1173 | ev_timer_start (EV_A_ w); |
754 | } |
1174 | } |
755 | |
1175 | |
756 | void |
1176 | void |
757 | evperiodic_start (struct ev_periodic *w) |
1177 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
758 | { |
1178 | { |
759 | if (ev_is_active (w)) |
1179 | if (ev_is_active (w)) |
760 | return; |
1180 | return; |
761 | |
1181 | |
762 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1182 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
763 | |
1183 | |
764 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1184 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
765 | if (w->interval) |
1185 | if (w->interval) |
766 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1186 | ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
767 | |
1187 | |
768 | ev_start ((W)w, ++periodiccnt); |
1188 | ev_start (EV_A_ (W)w, ++periodiccnt); |
769 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1189 | array_needsize (periodics, periodicmax, periodiccnt, ); |
770 | periodics [periodiccnt - 1] = w; |
1190 | periodics [periodiccnt - 1] = w; |
771 | upheap ((WT *)periodics, periodiccnt - 1); |
1191 | upheap ((WT *)periodics, periodiccnt - 1); |
772 | } |
|
|
773 | |
1192 | |
|
|
1193 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1194 | } |
|
|
1195 | |
774 | void |
1196 | void |
775 | evperiodic_stop (struct ev_periodic *w) |
1197 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
776 | { |
1198 | { |
777 | ev_clear ((W)w); |
1199 | ev_clear_pending (EV_A_ (W)w); |
778 | if (!ev_is_active (w)) |
1200 | if (!ev_is_active (w)) |
779 | return; |
1201 | return; |
780 | |
1202 | |
|
|
1203 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1204 | |
781 | if (w->active < periodiccnt--) |
1205 | if (((W)w)->active < periodiccnt--) |
782 | { |
1206 | { |
783 | periodics [w->active - 1] = periodics [periodiccnt]; |
1207 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
784 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1208 | downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
785 | } |
1209 | } |
786 | |
1210 | |
787 | ev_stop ((W)w); |
1211 | ev_stop (EV_A_ (W)w); |
788 | } |
1212 | } |
789 | |
1213 | |
790 | void |
1214 | void |
791 | evsignal_start (struct ev_signal *w) |
1215 | ev_idle_start (EV_P_ struct ev_idle *w) |
792 | { |
1216 | { |
793 | if (ev_is_active (w)) |
1217 | if (ev_is_active (w)) |
794 | return; |
1218 | return; |
795 | |
1219 | |
|
|
1220 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1221 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
1222 | idles [idlecnt - 1] = w; |
|
|
1223 | } |
|
|
1224 | |
|
|
1225 | void |
|
|
1226 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1227 | { |
|
|
1228 | ev_clear_pending (EV_A_ (W)w); |
|
|
1229 | if (ev_is_active (w)) |
|
|
1230 | return; |
|
|
1231 | |
|
|
1232 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1233 | ev_stop (EV_A_ (W)w); |
|
|
1234 | } |
|
|
1235 | |
|
|
1236 | void |
|
|
1237 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1238 | { |
|
|
1239 | if (ev_is_active (w)) |
|
|
1240 | return; |
|
|
1241 | |
|
|
1242 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1243 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1244 | prepares [preparecnt - 1] = w; |
|
|
1245 | } |
|
|
1246 | |
|
|
1247 | void |
|
|
1248 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1249 | { |
|
|
1250 | ev_clear_pending (EV_A_ (W)w); |
|
|
1251 | if (ev_is_active (w)) |
|
|
1252 | return; |
|
|
1253 | |
|
|
1254 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1255 | ev_stop (EV_A_ (W)w); |
|
|
1256 | } |
|
|
1257 | |
|
|
1258 | void |
|
|
1259 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1260 | { |
|
|
1261 | if (ev_is_active (w)) |
|
|
1262 | return; |
|
|
1263 | |
|
|
1264 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1265 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
1266 | checks [checkcnt - 1] = w; |
|
|
1267 | } |
|
|
1268 | |
|
|
1269 | void |
|
|
1270 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1271 | { |
|
|
1272 | ev_clear_pending (EV_A_ (W)w); |
|
|
1273 | if (ev_is_active (w)) |
|
|
1274 | return; |
|
|
1275 | |
|
|
1276 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1277 | ev_stop (EV_A_ (W)w); |
|
|
1278 | } |
|
|
1279 | |
|
|
1280 | #ifndef SA_RESTART |
|
|
1281 | # define SA_RESTART 0 |
|
|
1282 | #endif |
|
|
1283 | |
|
|
1284 | void |
|
|
1285 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1286 | { |
|
|
1287 | #if EV_MULTIPLICITY |
|
|
1288 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
|
|
1289 | #endif |
|
|
1290 | if (ev_is_active (w)) |
|
|
1291 | return; |
|
|
1292 | |
|
|
1293 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1294 | |
796 | ev_start ((W)w, 1); |
1295 | ev_start (EV_A_ (W)w, 1); |
797 | array_needsize (signals, signalmax, w->signum, signals_init); |
1296 | array_needsize (signals, signalmax, w->signum, signals_init); |
798 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1297 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
799 | |
1298 | |
800 | if (!w->next) |
1299 | if (!((WL)w)->next) |
801 | { |
1300 | { |
802 | struct sigaction sa; |
1301 | struct sigaction sa; |
803 | sa.sa_handler = sighandler; |
1302 | sa.sa_handler = sighandler; |
804 | sigfillset (&sa.sa_mask); |
1303 | sigfillset (&sa.sa_mask); |
805 | sa.sa_flags = 0; |
1304 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
806 | sigaction (w->signum, &sa, 0); |
1305 | sigaction (w->signum, &sa, 0); |
807 | } |
1306 | } |
808 | } |
1307 | } |
809 | |
1308 | |
810 | void |
1309 | void |
811 | evsignal_stop (struct ev_signal *w) |
1310 | ev_signal_stop (EV_P_ struct ev_signal *w) |
812 | { |
1311 | { |
813 | ev_clear ((W)w); |
1312 | ev_clear_pending (EV_A_ (W)w); |
814 | if (!ev_is_active (w)) |
1313 | if (!ev_is_active (w)) |
815 | return; |
1314 | return; |
816 | |
1315 | |
817 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1316 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
818 | ev_stop ((W)w); |
1317 | ev_stop (EV_A_ (W)w); |
819 | |
1318 | |
820 | if (!signals [w->signum - 1].head) |
1319 | if (!signals [w->signum - 1].head) |
821 | signal (w->signum, SIG_DFL); |
1320 | signal (w->signum, SIG_DFL); |
822 | } |
1321 | } |
823 | |
1322 | |
824 | void evidle_start (struct ev_idle *w) |
1323 | void |
|
|
1324 | ev_child_start (EV_P_ struct ev_child *w) |
825 | { |
1325 | { |
|
|
1326 | #if EV_MULTIPLICITY |
|
|
1327 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1328 | #endif |
826 | if (ev_is_active (w)) |
1329 | if (ev_is_active (w)) |
827 | return; |
1330 | return; |
828 | |
1331 | |
829 | ev_start ((W)w, ++idlecnt); |
1332 | ev_start (EV_A_ (W)w, 1); |
830 | array_needsize (idles, idlemax, idlecnt, ); |
1333 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
831 | idles [idlecnt - 1] = w; |
|
|
832 | } |
1334 | } |
833 | |
1335 | |
834 | void evidle_stop (struct ev_idle *w) |
1336 | void |
|
|
1337 | ev_child_stop (EV_P_ struct ev_child *w) |
835 | { |
1338 | { |
836 | ev_clear ((W)w); |
1339 | ev_clear_pending (EV_A_ (W)w); |
837 | if (ev_is_active (w)) |
1340 | if (ev_is_active (w)) |
838 | return; |
1341 | return; |
839 | |
1342 | |
840 | idles [w->active - 1] = idles [--idlecnt]; |
1343 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
841 | ev_stop ((W)w); |
1344 | ev_stop (EV_A_ (W)w); |
842 | } |
|
|
843 | |
|
|
844 | void evprepare_start (struct ev_prepare *w) |
|
|
845 | { |
|
|
846 | if (ev_is_active (w)) |
|
|
847 | return; |
|
|
848 | |
|
|
849 | ev_start ((W)w, ++preparecnt); |
|
|
850 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
851 | prepares [preparecnt - 1] = w; |
|
|
852 | } |
|
|
853 | |
|
|
854 | void evprepare_stop (struct ev_prepare *w) |
|
|
855 | { |
|
|
856 | ev_clear ((W)w); |
|
|
857 | if (ev_is_active (w)) |
|
|
858 | return; |
|
|
859 | |
|
|
860 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
861 | ev_stop ((W)w); |
|
|
862 | } |
|
|
863 | |
|
|
864 | void evcheck_start (struct ev_check *w) |
|
|
865 | { |
|
|
866 | if (ev_is_active (w)) |
|
|
867 | return; |
|
|
868 | |
|
|
869 | ev_start ((W)w, ++checkcnt); |
|
|
870 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
871 | checks [checkcnt - 1] = w; |
|
|
872 | } |
|
|
873 | |
|
|
874 | void evcheck_stop (struct ev_check *w) |
|
|
875 | { |
|
|
876 | ev_clear ((W)w); |
|
|
877 | if (ev_is_active (w)) |
|
|
878 | return; |
|
|
879 | |
|
|
880 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
881 | ev_stop ((W)w); |
|
|
882 | } |
1345 | } |
883 | |
1346 | |
884 | /*****************************************************************************/ |
1347 | /*****************************************************************************/ |
885 | |
1348 | |
886 | struct ev_once |
1349 | struct ev_once |
… | |
… | |
890 | void (*cb)(int revents, void *arg); |
1353 | void (*cb)(int revents, void *arg); |
891 | void *arg; |
1354 | void *arg; |
892 | }; |
1355 | }; |
893 | |
1356 | |
894 | static void |
1357 | static void |
895 | once_cb (struct ev_once *once, int revents) |
1358 | once_cb (EV_P_ struct ev_once *once, int revents) |
896 | { |
1359 | { |
897 | void (*cb)(int revents, void *arg) = once->cb; |
1360 | void (*cb)(int revents, void *arg) = once->cb; |
898 | void *arg = once->arg; |
1361 | void *arg = once->arg; |
899 | |
1362 | |
900 | evio_stop (&once->io); |
1363 | ev_io_stop (EV_A_ &once->io); |
901 | evtimer_stop (&once->to); |
1364 | ev_timer_stop (EV_A_ &once->to); |
902 | free (once); |
1365 | free (once); |
903 | |
1366 | |
904 | cb (revents, arg); |
1367 | cb (revents, arg); |
905 | } |
1368 | } |
906 | |
1369 | |
907 | static void |
1370 | static void |
908 | once_cb_io (struct ev_io *w, int revents) |
1371 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
909 | { |
1372 | { |
910 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1373 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
911 | } |
1374 | } |
912 | |
1375 | |
913 | static void |
1376 | static void |
914 | once_cb_to (struct ev_timer *w, int revents) |
1377 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
915 | { |
1378 | { |
916 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1379 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
917 | } |
1380 | } |
918 | |
1381 | |
919 | void |
1382 | void |
920 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1383 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
921 | { |
1384 | { |
922 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1385 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
923 | |
1386 | |
924 | if (!once) |
1387 | if (!once) |
925 | cb (EV_ERROR, arg); |
1388 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
926 | else |
1389 | else |
927 | { |
1390 | { |
928 | once->cb = cb; |
1391 | once->cb = cb; |
929 | once->arg = arg; |
1392 | once->arg = arg; |
930 | |
1393 | |
931 | evw_init (&once->io, once_cb_io); |
1394 | ev_watcher_init (&once->io, once_cb_io); |
932 | |
|
|
933 | if (fd >= 0) |
1395 | if (fd >= 0) |
934 | { |
1396 | { |
935 | evio_set (&once->io, fd, events); |
1397 | ev_io_set (&once->io, fd, events); |
936 | evio_start (&once->io); |
1398 | ev_io_start (EV_A_ &once->io); |
937 | } |
1399 | } |
938 | |
1400 | |
939 | evw_init (&once->to, once_cb_to); |
1401 | ev_watcher_init (&once->to, once_cb_to); |
940 | |
|
|
941 | if (timeout >= 0.) |
1402 | if (timeout >= 0.) |
942 | { |
1403 | { |
943 | evtimer_set (&once->to, timeout, 0.); |
1404 | ev_timer_set (&once->to, timeout, 0.); |
944 | evtimer_start (&once->to); |
1405 | ev_timer_start (EV_A_ &once->to); |
945 | } |
1406 | } |
946 | } |
1407 | } |
947 | } |
1408 | } |
948 | |
1409 | |
949 | /*****************************************************************************/ |
|
|
950 | |
|
|
951 | #if 0 |
|
|
952 | |
|
|
953 | struct ev_io wio; |
|
|
954 | |
|
|
955 | static void |
|
|
956 | sin_cb (struct ev_io *w, int revents) |
|
|
957 | { |
|
|
958 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
959 | } |
|
|
960 | |
|
|
961 | static void |
|
|
962 | ocb (struct ev_timer *w, int revents) |
|
|
963 | { |
|
|
964 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
965 | evtimer_stop (w); |
|
|
966 | evtimer_start (w); |
|
|
967 | } |
|
|
968 | |
|
|
969 | static void |
|
|
970 | scb (struct ev_signal *w, int revents) |
|
|
971 | { |
|
|
972 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
973 | evio_stop (&wio); |
|
|
974 | evio_start (&wio); |
|
|
975 | } |
|
|
976 | |
|
|
977 | static void |
|
|
978 | gcb (struct ev_signal *w, int revents) |
|
|
979 | { |
|
|
980 | fprintf (stderr, "generic %x\n", revents); |
|
|
981 | |
|
|
982 | } |
|
|
983 | |
|
|
984 | int main (void) |
|
|
985 | { |
|
|
986 | ev_init (0); |
|
|
987 | |
|
|
988 | evio_init (&wio, sin_cb, 0, EV_READ); |
|
|
989 | evio_start (&wio); |
|
|
990 | |
|
|
991 | struct ev_timer t[10000]; |
|
|
992 | |
|
|
993 | #if 0 |
|
|
994 | int i; |
|
|
995 | for (i = 0; i < 10000; ++i) |
|
|
996 | { |
|
|
997 | struct ev_timer *w = t + i; |
|
|
998 | evw_init (w, ocb, i); |
|
|
999 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1000 | evtimer_start (w); |
|
|
1001 | if (drand48 () < 0.5) |
|
|
1002 | evtimer_stop (w); |
|
|
1003 | } |
|
|
1004 | #endif |
|
|
1005 | |
|
|
1006 | struct ev_timer t1; |
|
|
1007 | evtimer_init (&t1, ocb, 5, 10); |
|
|
1008 | evtimer_start (&t1); |
|
|
1009 | |
|
|
1010 | struct ev_signal sig; |
|
|
1011 | evsignal_init (&sig, scb, SIGQUIT); |
|
|
1012 | evsignal_start (&sig); |
|
|
1013 | |
|
|
1014 | struct ev_check cw; |
|
|
1015 | evcheck_init (&cw, gcb); |
|
|
1016 | evcheck_start (&cw); |
|
|
1017 | |
|
|
1018 | struct ev_idle iw; |
|
|
1019 | evidle_init (&iw, gcb); |
|
|
1020 | evidle_start (&iw); |
|
|
1021 | |
|
|
1022 | ev_loop (0); |
|
|
1023 | |
|
|
1024 | return 0; |
|
|
1025 | } |
|
|
1026 | |
|
|
1027 | #endif |
|
|
1028 | |
|
|
1029 | |
|
|
1030 | |
|
|
1031 | |
|
|