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 | #endif |
29 | |
34 | |
30 | #include <math.h> |
35 | #include <math.h> |
31 | #include <stdlib.h> |
36 | #include <stdlib.h> |
32 | #include <unistd.h> |
37 | #include <unistd.h> |
33 | #include <fcntl.h> |
38 | #include <fcntl.h> |
… | |
… | |
37 | #include <stdio.h> |
42 | #include <stdio.h> |
38 | |
43 | |
39 | #include <assert.h> |
44 | #include <assert.h> |
40 | #include <errno.h> |
45 | #include <errno.h> |
41 | #include <sys/types.h> |
46 | #include <sys/types.h> |
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47 | #ifndef WIN32 |
42 | #include <sys/wait.h> |
48 | # include <sys/wait.h> |
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49 | #endif |
43 | #include <sys/time.h> |
50 | #include <sys/time.h> |
44 | #include <time.h> |
51 | #include <time.h> |
45 | |
52 | |
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53 | /**/ |
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54 | |
46 | #ifndef HAVE_MONOTONIC |
55 | #ifndef EV_USE_MONOTONIC |
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56 | # define EV_USE_MONOTONIC 1 |
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57 | #endif |
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58 | |
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59 | #ifndef EV_USE_SELECT |
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60 | # define EV_USE_SELECT 1 |
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61 | #endif |
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62 | |
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63 | #ifndef EV_USE_POLL |
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64 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
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65 | #endif |
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66 | |
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67 | #ifndef EV_USE_EPOLL |
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68 | # define EV_USE_EPOLL 0 |
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69 | #endif |
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70 | |
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71 | #ifndef EV_USE_KQUEUE |
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72 | # define EV_USE_KQUEUE 0 |
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73 | #endif |
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74 | |
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75 | #ifndef EV_USE_REALTIME |
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76 | # define EV_USE_REALTIME 1 |
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77 | #endif |
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78 | |
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79 | /**/ |
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80 | |
47 | # ifdef CLOCK_MONOTONIC |
81 | #ifndef CLOCK_MONOTONIC |
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82 | # undef EV_USE_MONOTONIC |
48 | # define HAVE_MONOTONIC 1 |
83 | # define EV_USE_MONOTONIC 0 |
49 | # endif |
84 | #endif |
50 | #endif |
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51 | |
85 | |
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 |
86 | #ifndef CLOCK_REALTIME |
61 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
87 | # undef EV_USE_REALTIME |
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88 | # define EV_USE_REALTIME 0 |
62 | #endif |
89 | #endif |
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90 | |
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91 | /**/ |
63 | |
92 | |
64 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
93 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
65 | #define MAX_BLOCKTIME 60. |
94 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
66 | #define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */ |
95 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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96 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
67 | |
97 | |
68 | #include "ev.h" |
98 | #include "ev.h" |
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99 | |
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100 | #if __GNUC__ >= 3 |
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101 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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102 | # define inline inline |
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103 | #else |
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104 | # define expect(expr,value) (expr) |
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105 | # define inline static |
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106 | #endif |
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107 | |
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108 | #define expect_false(expr) expect ((expr) != 0, 0) |
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109 | #define expect_true(expr) expect ((expr) != 0, 1) |
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110 | |
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111 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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112 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
69 | |
113 | |
70 | typedef struct ev_watcher *W; |
114 | typedef struct ev_watcher *W; |
71 | typedef struct ev_watcher_list *WL; |
115 | typedef struct ev_watcher_list *WL; |
72 | typedef struct ev_watcher_time *WT; |
116 | typedef struct ev_watcher_time *WT; |
73 | |
117 | |
74 | static ev_tstamp now, diff; /* monotonic clock */ |
118 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
75 | ev_tstamp ev_now; |
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76 | int ev_method; |
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77 | |
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78 | static int have_monotonic; /* runtime */ |
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79 | |
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80 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
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81 | static void (*method_modify)(int fd, int oev, int nev); |
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82 | static void (*method_poll)(ev_tstamp timeout); |
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83 | |
119 | |
84 | /*****************************************************************************/ |
120 | /*****************************************************************************/ |
85 | |
121 | |
86 | ev_tstamp |
122 | typedef struct |
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123 | { |
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124 | struct ev_watcher_list *head; |
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125 | unsigned char events; |
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126 | unsigned char reify; |
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127 | } ANFD; |
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128 | |
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129 | typedef struct |
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130 | { |
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131 | W w; |
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132 | int events; |
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133 | } ANPENDING; |
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134 | |
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135 | #if EV_MULTIPLICITY |
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136 | |
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137 | struct ev_loop |
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138 | { |
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139 | # define VAR(name,decl) decl; |
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140 | # include "ev_vars.h" |
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141 | }; |
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142 | # undef VAR |
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143 | # include "ev_wrap.h" |
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144 | |
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145 | #else |
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146 | |
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147 | # define VAR(name,decl) static decl; |
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148 | # include "ev_vars.h" |
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149 | # undef VAR |
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150 | |
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151 | #endif |
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152 | |
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153 | /*****************************************************************************/ |
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154 | |
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155 | inline ev_tstamp |
87 | ev_time (void) |
156 | ev_time (void) |
88 | { |
157 | { |
89 | #if HAVE_REALTIME |
158 | #if EV_USE_REALTIME |
90 | struct timespec ts; |
159 | struct timespec ts; |
91 | clock_gettime (CLOCK_REALTIME, &ts); |
160 | clock_gettime (CLOCK_REALTIME, &ts); |
92 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
161 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
93 | #else |
162 | #else |
94 | struct timeval tv; |
163 | struct timeval tv; |
95 | gettimeofday (&tv, 0); |
164 | gettimeofday (&tv, 0); |
96 | return tv.tv_sec + tv.tv_usec * 1e-6; |
165 | return tv.tv_sec + tv.tv_usec * 1e-6; |
97 | #endif |
166 | #endif |
98 | } |
167 | } |
99 | |
168 | |
100 | static ev_tstamp |
169 | inline ev_tstamp |
101 | get_clock (void) |
170 | get_clock (void) |
102 | { |
171 | { |
103 | #if HAVE_MONOTONIC |
172 | #if EV_USE_MONOTONIC |
104 | if (have_monotonic) |
173 | if (expect_true (have_monotonic)) |
105 | { |
174 | { |
106 | struct timespec ts; |
175 | struct timespec ts; |
107 | clock_gettime (CLOCK_MONOTONIC, &ts); |
176 | clock_gettime (CLOCK_MONOTONIC, &ts); |
108 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
177 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
109 | } |
178 | } |
110 | #endif |
179 | #endif |
111 | |
180 | |
112 | return ev_time (); |
181 | return ev_time (); |
113 | } |
182 | } |
114 | |
183 | |
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184 | ev_tstamp |
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185 | ev_now (EV_P) |
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186 | { |
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187 | return rt_now; |
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188 | } |
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189 | |
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190 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
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191 | |
115 | #define array_needsize(base,cur,cnt,init) \ |
192 | #define array_needsize(base,cur,cnt,init) \ |
116 | if ((cnt) > cur) \ |
193 | if (expect_false ((cnt) > cur)) \ |
117 | { \ |
194 | { \ |
118 | int newcnt = cur; \ |
195 | int newcnt = cur; \ |
119 | do \ |
196 | do \ |
120 | { \ |
197 | { \ |
121 | newcnt = (newcnt << 1) | 4 & ~3; \ |
198 | newcnt = array_roundsize (base, newcnt << 1); \ |
122 | } \ |
199 | } \ |
123 | while ((cnt) > newcnt); \ |
200 | while ((cnt) > newcnt); \ |
124 | \ |
201 | \ |
125 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
202 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
126 | init (base + cur, newcnt - cur); \ |
203 | init (base + cur, newcnt - cur); \ |
127 | cur = newcnt; \ |
204 | cur = newcnt; \ |
128 | } |
205 | } |
129 | |
206 | |
130 | /*****************************************************************************/ |
207 | /*****************************************************************************/ |
131 | |
208 | |
132 | typedef struct |
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133 | { |
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134 | struct ev_io *head; |
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135 | unsigned char wev, rev; /* want, received event set */ |
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136 | } ANFD; |
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137 | |
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138 | static ANFD *anfds; |
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139 | static int anfdmax; |
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140 | |
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141 | static int *fdchanges; |
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142 | static int fdchangemax, fdchangecnt; |
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143 | |
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144 | static void |
209 | static void |
145 | anfds_init (ANFD *base, int count) |
210 | anfds_init (ANFD *base, int count) |
146 | { |
211 | { |
147 | while (count--) |
212 | while (count--) |
148 | { |
213 | { |
149 | base->head = 0; |
214 | base->head = 0; |
150 | base->wev = base->rev = EV_NONE; |
215 | base->events = EV_NONE; |
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216 | base->reify = 0; |
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217 | |
151 | ++base; |
218 | ++base; |
152 | } |
219 | } |
153 | } |
220 | } |
154 | |
221 | |
155 | typedef struct |
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156 | { |
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157 | W w; |
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158 | int events; |
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159 | } ANPENDING; |
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160 | |
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161 | static ANPENDING *pendings; |
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162 | static int pendingmax, pendingcnt; |
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163 | |
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164 | static void |
222 | static void |
165 | event (W w, int events) |
223 | event (EV_P_ W w, int events) |
166 | { |
224 | { |
167 | if (w->active) |
225 | if (w->pending) |
168 | { |
226 | { |
169 | w->pending = ++pendingcnt; |
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170 | array_needsize (pendings, pendingmax, pendingcnt, ); |
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171 | pendings [pendingcnt - 1].w = w; |
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172 | pendings [pendingcnt - 1].events = events; |
227 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
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228 | return; |
173 | } |
229 | } |
174 | } |
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175 | |
230 | |
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231 | w->pending = ++pendingcnt [ABSPRI (w)]; |
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232 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
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233 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
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234 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
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235 | } |
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236 | |
176 | static void |
237 | static void |
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238 | queue_events (EV_P_ W *events, int eventcnt, int type) |
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239 | { |
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240 | int i; |
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241 | |
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242 | for (i = 0; i < eventcnt; ++i) |
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243 | event (EV_A_ events [i], type); |
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244 | } |
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245 | |
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246 | static void |
177 | fd_event (int fd, int events) |
247 | fd_event (EV_P_ int fd, int events) |
178 | { |
248 | { |
179 | ANFD *anfd = anfds + fd; |
249 | ANFD *anfd = anfds + fd; |
180 | struct ev_io *w; |
250 | struct ev_io *w; |
181 | |
251 | |
182 | for (w = anfd->head; w; w = w->next) |
252 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
183 | { |
253 | { |
184 | int ev = w->events & events; |
254 | int ev = w->events & events; |
185 | |
255 | |
186 | if (ev) |
256 | if (ev) |
187 | event ((W)w, ev); |
257 | event (EV_A_ (W)w, ev); |
188 | } |
258 | } |
189 | } |
259 | } |
190 | |
260 | |
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261 | /*****************************************************************************/ |
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262 | |
191 | static void |
263 | static void |
192 | queue_events (W *events, int eventcnt, int type) |
264 | fd_reify (EV_P) |
193 | { |
265 | { |
194 | int i; |
266 | int i; |
195 | |
267 | |
196 | for (i = 0; i < eventcnt; ++i) |
268 | for (i = 0; i < fdchangecnt; ++i) |
197 | event (events [i], type); |
269 | { |
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270 | int fd = fdchanges [i]; |
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271 | ANFD *anfd = anfds + fd; |
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272 | struct ev_io *w; |
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273 | |
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274 | int events = 0; |
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275 | |
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276 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
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277 | events |= w->events; |
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278 | |
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279 | anfd->reify = 0; |
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280 | |
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281 | if (anfd->events != events) |
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282 | { |
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283 | method_modify (EV_A_ fd, anfd->events, events); |
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284 | anfd->events = events; |
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285 | } |
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286 | } |
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287 | |
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288 | fdchangecnt = 0; |
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289 | } |
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290 | |
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291 | static void |
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292 | fd_change (EV_P_ int fd) |
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293 | { |
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294 | if (anfds [fd].reify || fdchangecnt < 0) |
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295 | return; |
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296 | |
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297 | anfds [fd].reify = 1; |
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298 | |
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299 | ++fdchangecnt; |
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300 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
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301 | fdchanges [fdchangecnt - 1] = fd; |
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302 | } |
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303 | |
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304 | static void |
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305 | fd_kill (EV_P_ int fd) |
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306 | { |
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307 | struct ev_io *w; |
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308 | |
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309 | while ((w = (struct ev_io *)anfds [fd].head)) |
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310 | { |
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311 | ev_io_stop (EV_A_ w); |
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312 | event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
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313 | } |
198 | } |
314 | } |
199 | |
315 | |
200 | /* called on EBADF to verify fds */ |
316 | /* called on EBADF to verify fds */ |
201 | static void |
317 | static void |
202 | fd_recheck (void) |
318 | fd_ebadf (EV_P) |
203 | { |
319 | { |
204 | int fd; |
320 | int fd; |
205 | |
321 | |
206 | for (fd = 0; fd < anfdmax; ++fd) |
322 | for (fd = 0; fd < anfdmax; ++fd) |
207 | if (anfds [fd].wev) |
323 | if (anfds [fd].events) |
208 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
324 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
209 | while (anfds [fd].head) |
325 | fd_kill (EV_A_ fd); |
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326 | } |
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327 | |
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328 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
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329 | static void |
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330 | fd_enomem (EV_P) |
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331 | { |
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332 | int fd = anfdmax; |
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333 | |
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334 | while (fd--) |
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335 | if (anfds [fd].events) |
210 | { |
336 | { |
211 | event ((W)anfds [fd].head, EV_ERROR); |
337 | close (fd); |
212 | evio_stop (anfds [fd].head); |
338 | fd_kill (EV_A_ fd); |
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339 | return; |
213 | } |
340 | } |
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341 | } |
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342 | |
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343 | /* susually called after fork if method needs to re-arm all fds from scratch */ |
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344 | static void |
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345 | fd_rearm_all (EV_P) |
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346 | { |
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347 | int fd; |
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348 | |
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349 | /* this should be highly optimised to not do anything but set a flag */ |
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350 | for (fd = 0; fd < anfdmax; ++fd) |
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351 | if (anfds [fd].events) |
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352 | { |
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353 | anfds [fd].events = 0; |
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354 | fd_change (fd); |
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355 | } |
214 | } |
356 | } |
215 | |
357 | |
216 | /*****************************************************************************/ |
358 | /*****************************************************************************/ |
217 | |
359 | |
218 | static struct ev_timer **timers; |
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219 | static int timermax, timercnt; |
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220 | |
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221 | static struct ev_periodic **periodics; |
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222 | static int periodicmax, periodiccnt; |
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223 | |
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224 | static void |
360 | static void |
225 | upheap (WT *timers, int k) |
361 | upheap (WT *heap, int k) |
226 | { |
362 | { |
227 | WT w = timers [k]; |
363 | WT w = heap [k]; |
228 | |
364 | |
229 | while (k && timers [k >> 1]->at > w->at) |
365 | while (k && heap [k >> 1]->at > w->at) |
230 | { |
366 | { |
231 | timers [k] = timers [k >> 1]; |
367 | heap [k] = heap [k >> 1]; |
232 | timers [k]->active = k + 1; |
368 | heap [k]->active = k + 1; |
233 | k >>= 1; |
369 | k >>= 1; |
234 | } |
370 | } |
235 | |
371 | |
236 | timers [k] = w; |
372 | heap [k] = w; |
237 | timers [k]->active = k + 1; |
373 | heap [k]->active = k + 1; |
238 | |
374 | |
239 | } |
375 | } |
240 | |
376 | |
241 | static void |
377 | static void |
242 | downheap (WT *timers, int N, int k) |
378 | downheap (WT *heap, int N, int k) |
243 | { |
379 | { |
244 | WT w = timers [k]; |
380 | WT w = heap [k]; |
245 | |
381 | |
246 | while (k < (N >> 1)) |
382 | while (k < (N >> 1)) |
247 | { |
383 | { |
248 | int j = k << 1; |
384 | int j = k << 1; |
249 | |
385 | |
250 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
386 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
251 | ++j; |
387 | ++j; |
252 | |
388 | |
253 | if (w->at <= timers [j]->at) |
389 | if (w->at <= heap [j]->at) |
254 | break; |
390 | break; |
255 | |
391 | |
256 | timers [k] = timers [j]; |
392 | heap [k] = heap [j]; |
257 | timers [k]->active = k + 1; |
393 | heap [k]->active = k + 1; |
258 | k = j; |
394 | k = j; |
259 | } |
395 | } |
260 | |
396 | |
261 | timers [k] = w; |
397 | heap [k] = w; |
262 | timers [k]->active = k + 1; |
398 | heap [k]->active = k + 1; |
263 | } |
399 | } |
264 | |
400 | |
265 | /*****************************************************************************/ |
401 | /*****************************************************************************/ |
266 | |
402 | |
267 | typedef struct |
403 | typedef struct |
268 | { |
404 | { |
269 | struct ev_signal *head; |
405 | struct ev_watcher_list *head; |
270 | sig_atomic_t gotsig; |
406 | sig_atomic_t volatile gotsig; |
271 | } ANSIG; |
407 | } ANSIG; |
272 | |
408 | |
273 | static ANSIG *signals; |
409 | static ANSIG *signals; |
274 | static int signalmax; |
410 | static int signalmax; |
275 | |
411 | |
276 | static int sigpipe [2]; |
412 | static int sigpipe [2]; |
277 | static sig_atomic_t gotsig; |
413 | static sig_atomic_t volatile gotsig; |
278 | static struct ev_io sigev; |
414 | static struct ev_io sigev; |
279 | |
415 | |
280 | static void |
416 | static void |
281 | signals_init (ANSIG *base, int count) |
417 | signals_init (ANSIG *base, int count) |
282 | { |
418 | { |
283 | while (count--) |
419 | while (count--) |
284 | { |
420 | { |
285 | base->head = 0; |
421 | base->head = 0; |
286 | base->gotsig = 0; |
422 | base->gotsig = 0; |
|
|
423 | |
287 | ++base; |
424 | ++base; |
288 | } |
425 | } |
289 | } |
426 | } |
290 | |
427 | |
291 | static void |
428 | static void |
… | |
… | |
293 | { |
430 | { |
294 | signals [signum - 1].gotsig = 1; |
431 | signals [signum - 1].gotsig = 1; |
295 | |
432 | |
296 | if (!gotsig) |
433 | if (!gotsig) |
297 | { |
434 | { |
|
|
435 | int old_errno = errno; |
298 | gotsig = 1; |
436 | gotsig = 1; |
299 | write (sigpipe [1], &gotsig, 1); |
437 | write (sigpipe [1], &signum, 1); |
|
|
438 | errno = old_errno; |
300 | } |
439 | } |
301 | } |
440 | } |
302 | |
441 | |
303 | static void |
442 | static void |
304 | sigcb (struct ev_io *iow, int revents) |
443 | sigcb (EV_P_ struct ev_io *iow, int revents) |
305 | { |
444 | { |
306 | struct ev_signal *w; |
445 | struct ev_watcher_list *w; |
307 | int sig; |
446 | int signum; |
308 | |
447 | |
|
|
448 | read (sigpipe [0], &revents, 1); |
309 | gotsig = 0; |
449 | gotsig = 0; |
310 | read (sigpipe [0], &revents, 1); |
|
|
311 | |
450 | |
312 | for (sig = signalmax; sig--; ) |
451 | for (signum = signalmax; signum--; ) |
313 | if (signals [sig].gotsig) |
452 | if (signals [signum].gotsig) |
314 | { |
453 | { |
315 | signals [sig].gotsig = 0; |
454 | signals [signum].gotsig = 0; |
316 | |
455 | |
317 | for (w = signals [sig].head; w; w = w->next) |
456 | for (w = signals [signum].head; w; w = w->next) |
318 | event ((W)w, EV_SIGNAL); |
457 | event (EV_A_ (W)w, EV_SIGNAL); |
319 | } |
458 | } |
320 | } |
459 | } |
321 | |
460 | |
322 | static void |
461 | static void |
323 | siginit (void) |
462 | siginit (EV_P) |
324 | { |
463 | { |
|
|
464 | #ifndef WIN32 |
325 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
465 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
326 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
466 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
327 | |
467 | |
328 | /* rather than sort out wether we really need nb, set it */ |
468 | /* rather than sort out wether we really need nb, set it */ |
329 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
469 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
330 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
470 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
471 | #endif |
331 | |
472 | |
332 | evio_set (&sigev, sigpipe [0], EV_READ); |
473 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
333 | evio_start (&sigev); |
474 | ev_io_start (EV_A_ &sigev); |
|
|
475 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
334 | } |
476 | } |
335 | |
477 | |
336 | /*****************************************************************************/ |
478 | /*****************************************************************************/ |
337 | |
479 | |
338 | static struct ev_idle **idles; |
480 | #ifndef WIN32 |
339 | static int idlemax, idlecnt; |
|
|
340 | |
|
|
341 | static struct ev_prepare **prepares; |
|
|
342 | static int preparemax, preparecnt; |
|
|
343 | |
|
|
344 | static struct ev_check **checks; |
|
|
345 | static int checkmax, checkcnt; |
|
|
346 | |
|
|
347 | /*****************************************************************************/ |
|
|
348 | |
481 | |
349 | static struct ev_child *childs [PID_HASHSIZE]; |
482 | static struct ev_child *childs [PID_HASHSIZE]; |
350 | static struct ev_signal childev; |
483 | static struct ev_signal childev; |
351 | |
484 | |
352 | #ifndef WCONTINUED |
485 | #ifndef WCONTINUED |
353 | # define WCONTINUED 0 |
486 | # define WCONTINUED 0 |
354 | #endif |
487 | #endif |
355 | |
488 | |
356 | static void |
489 | static void |
357 | childcb (struct ev_signal *sw, int revents) |
490 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
358 | { |
491 | { |
359 | struct ev_child *w; |
492 | struct ev_child *w; |
|
|
493 | |
|
|
494 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
495 | if (w->pid == pid || !w->pid) |
|
|
496 | { |
|
|
497 | w->priority = sw->priority; /* need to do it *now* */ |
|
|
498 | w->rpid = pid; |
|
|
499 | w->rstatus = status; |
|
|
500 | event (EV_A_ (W)w, EV_CHILD); |
|
|
501 | } |
|
|
502 | } |
|
|
503 | |
|
|
504 | static void |
|
|
505 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
506 | { |
360 | int pid, status; |
507 | int pid, status; |
361 | |
508 | |
362 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
509 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
363 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
510 | { |
364 | if (w->pid == pid || w->pid == -1) |
511 | /* make sure we are called again until all childs have been reaped */ |
365 | { |
512 | event (EV_A_ (W)sw, EV_SIGNAL); |
366 | w->status = status; |
513 | |
367 | event ((W)w, EV_CHILD); |
514 | child_reap (EV_A_ sw, pid, pid, status); |
368 | } |
515 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
516 | } |
369 | } |
517 | } |
|
|
518 | |
|
|
519 | #endif |
370 | |
520 | |
371 | /*****************************************************************************/ |
521 | /*****************************************************************************/ |
372 | |
522 | |
|
|
523 | #if EV_USE_KQUEUE |
|
|
524 | # include "ev_kqueue.c" |
|
|
525 | #endif |
373 | #if HAVE_EPOLL |
526 | #if EV_USE_EPOLL |
374 | # include "ev_epoll.c" |
527 | # include "ev_epoll.c" |
375 | #endif |
528 | #endif |
|
|
529 | #if EV_USE_POLL |
|
|
530 | # include "ev_poll.c" |
|
|
531 | #endif |
376 | #if HAVE_SELECT |
532 | #if EV_USE_SELECT |
377 | # include "ev_select.c" |
533 | # include "ev_select.c" |
378 | #endif |
534 | #endif |
379 | |
535 | |
380 | int |
536 | int |
381 | ev_version_major (void) |
537 | ev_version_major (void) |
… | |
… | |
387 | ev_version_minor (void) |
543 | ev_version_minor (void) |
388 | { |
544 | { |
389 | return EV_VERSION_MINOR; |
545 | return EV_VERSION_MINOR; |
390 | } |
546 | } |
391 | |
547 | |
392 | int ev_init (int flags) |
548 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
549 | static int |
|
|
550 | enable_secure (void) |
393 | { |
551 | { |
|
|
552 | #ifdef WIN32 |
|
|
553 | return 0; |
|
|
554 | #else |
|
|
555 | return getuid () != geteuid () |
|
|
556 | || getgid () != getegid (); |
|
|
557 | #endif |
|
|
558 | } |
|
|
559 | |
|
|
560 | int |
|
|
561 | ev_method (EV_P) |
|
|
562 | { |
|
|
563 | return method; |
|
|
564 | } |
|
|
565 | |
|
|
566 | static void |
|
|
567 | loop_init (EV_P_ int methods) |
|
|
568 | { |
394 | if (!ev_method) |
569 | if (!method) |
395 | { |
570 | { |
396 | #if HAVE_MONOTONIC |
571 | #if EV_USE_MONOTONIC |
397 | { |
572 | { |
398 | struct timespec ts; |
573 | struct timespec ts; |
399 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
574 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
400 | have_monotonic = 1; |
575 | have_monotonic = 1; |
401 | } |
576 | } |
402 | #endif |
577 | #endif |
403 | |
578 | |
404 | ev_now = ev_time (); |
579 | rt_now = ev_time (); |
405 | now = get_clock (); |
580 | mn_now = get_clock (); |
|
|
581 | now_floor = mn_now; |
406 | diff = ev_now - now; |
582 | rtmn_diff = rt_now - mn_now; |
407 | |
583 | |
|
|
584 | if (methods == EVMETHOD_AUTO) |
|
|
585 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
586 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
587 | else |
|
|
588 | methods = EVMETHOD_ANY; |
|
|
589 | |
|
|
590 | method = 0; |
|
|
591 | #if EV_USE_KQUEUE |
|
|
592 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
593 | #endif |
|
|
594 | #if EV_USE_EPOLL |
|
|
595 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
596 | #endif |
|
|
597 | #if EV_USE_POLL |
|
|
598 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
599 | #endif |
|
|
600 | #if EV_USE_SELECT |
|
|
601 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
|
|
602 | #endif |
|
|
603 | } |
|
|
604 | } |
|
|
605 | |
|
|
606 | void |
|
|
607 | loop_destroy (EV_P) |
|
|
608 | { |
|
|
609 | #if EV_USE_KQUEUE |
|
|
610 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
611 | #endif |
|
|
612 | #if EV_USE_EPOLL |
|
|
613 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
614 | #endif |
|
|
615 | #if EV_USE_POLL |
|
|
616 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
617 | #endif |
|
|
618 | #if EV_USE_SELECT |
|
|
619 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
620 | #endif |
|
|
621 | |
|
|
622 | method = 0; |
|
|
623 | /*TODO*/ |
|
|
624 | } |
|
|
625 | |
|
|
626 | void |
|
|
627 | loop_fork (EV_P) |
|
|
628 | { |
|
|
629 | /*TODO*/ |
|
|
630 | #if EV_USE_EPOLL |
|
|
631 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
632 | #endif |
|
|
633 | #if EV_USE_KQUEUE |
|
|
634 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
635 | #endif |
|
|
636 | } |
|
|
637 | |
|
|
638 | #if EV_MULTIPLICITY |
|
|
639 | struct ev_loop * |
|
|
640 | ev_loop_new (int methods) |
|
|
641 | { |
|
|
642 | struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); |
|
|
643 | |
|
|
644 | loop_init (EV_A_ methods); |
|
|
645 | |
|
|
646 | if (ev_methods (EV_A)) |
|
|
647 | return loop; |
|
|
648 | |
|
|
649 | return 0; |
|
|
650 | } |
|
|
651 | |
|
|
652 | void |
|
|
653 | ev_loop_destroy (EV_P) |
|
|
654 | { |
|
|
655 | loop_destroy (EV_A); |
|
|
656 | free (loop); |
|
|
657 | } |
|
|
658 | |
|
|
659 | void |
|
|
660 | ev_loop_fork (EV_P) |
|
|
661 | { |
|
|
662 | loop_fork (EV_A); |
|
|
663 | } |
|
|
664 | |
|
|
665 | #endif |
|
|
666 | |
|
|
667 | #if EV_MULTIPLICITY |
|
|
668 | struct ev_loop default_loop_struct; |
|
|
669 | static struct ev_loop *default_loop; |
|
|
670 | |
|
|
671 | struct ev_loop * |
|
|
672 | #else |
|
|
673 | static int default_loop; |
|
|
674 | |
|
|
675 | int |
|
|
676 | #endif |
|
|
677 | ev_default_loop (int methods) |
|
|
678 | { |
|
|
679 | if (sigpipe [0] == sigpipe [1]) |
408 | if (pipe (sigpipe)) |
680 | if (pipe (sigpipe)) |
409 | return 0; |
681 | return 0; |
410 | |
682 | |
411 | ev_method = EVMETHOD_NONE; |
683 | if (!default_loop) |
412 | #if HAVE_EPOLL |
684 | { |
413 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
685 | #if EV_MULTIPLICITY |
|
|
686 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
687 | #else |
|
|
688 | default_loop = 1; |
414 | #endif |
689 | #endif |
415 | #if HAVE_SELECT |
|
|
416 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
417 | #endif |
|
|
418 | |
690 | |
|
|
691 | loop_init (EV_A_ methods); |
|
|
692 | |
419 | if (ev_method) |
693 | if (ev_method (EV_A)) |
420 | { |
694 | { |
421 | evw_init (&sigev, sigcb); |
695 | ev_watcher_init (&sigev, sigcb); |
|
|
696 | ev_set_priority (&sigev, EV_MAXPRI); |
422 | siginit (); |
697 | siginit (EV_A); |
423 | |
698 | |
|
|
699 | #ifndef WIN32 |
424 | evsignal_init (&childev, childcb, SIGCHLD); |
700 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
701 | ev_set_priority (&childev, EV_MAXPRI); |
425 | evsignal_start (&childev); |
702 | ev_signal_start (EV_A_ &childev); |
|
|
703 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
704 | #endif |
426 | } |
705 | } |
|
|
706 | else |
|
|
707 | default_loop = 0; |
427 | } |
708 | } |
428 | |
709 | |
429 | return ev_method; |
710 | return default_loop; |
430 | } |
711 | } |
431 | |
712 | |
432 | /*****************************************************************************/ |
|
|
433 | |
|
|
434 | void |
713 | void |
435 | ev_prefork (void) |
714 | ev_default_destroy (void) |
436 | { |
715 | { |
437 | /* nop */ |
716 | #if EV_MULTIPLICITY |
438 | } |
717 | struct ev_loop *loop = default_loop; |
439 | |
|
|
440 | void |
|
|
441 | ev_postfork_parent (void) |
|
|
442 | { |
|
|
443 | /* nop */ |
|
|
444 | } |
|
|
445 | |
|
|
446 | void |
|
|
447 | ev_postfork_child (void) |
|
|
448 | { |
|
|
449 | #if HAVE_EPOLL |
|
|
450 | if (ev_method == EVMETHOD_EPOLL) |
|
|
451 | epoll_postfork_child (); |
|
|
452 | #endif |
718 | #endif |
453 | |
719 | |
|
|
720 | ev_ref (EV_A); /* child watcher */ |
|
|
721 | ev_signal_stop (EV_A_ &childev); |
|
|
722 | |
|
|
723 | ev_ref (EV_A); /* signal watcher */ |
454 | evio_stop (&sigev); |
724 | ev_io_stop (EV_A_ &sigev); |
|
|
725 | |
|
|
726 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
727 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
728 | |
|
|
729 | loop_destroy (EV_A); |
|
|
730 | } |
|
|
731 | |
|
|
732 | void |
|
|
733 | ev_default_fork (EV_P) |
|
|
734 | { |
|
|
735 | loop_fork (EV_A); |
|
|
736 | |
|
|
737 | ev_io_stop (EV_A_ &sigev); |
455 | close (sigpipe [0]); |
738 | close (sigpipe [0]); |
456 | close (sigpipe [1]); |
739 | close (sigpipe [1]); |
457 | pipe (sigpipe); |
740 | pipe (sigpipe); |
|
|
741 | |
|
|
742 | ev_ref (EV_A); /* signal watcher */ |
458 | siginit (); |
743 | siginit (EV_A); |
459 | } |
744 | } |
460 | |
745 | |
461 | /*****************************************************************************/ |
746 | /*****************************************************************************/ |
462 | |
747 | |
463 | static void |
748 | static void |
464 | fd_reify (void) |
749 | call_pending (EV_P) |
465 | { |
750 | { |
466 | int i; |
751 | int pri; |
467 | |
752 | |
468 | for (i = 0; i < fdchangecnt; ++i) |
753 | for (pri = NUMPRI; pri--; ) |
469 | { |
754 | while (pendingcnt [pri]) |
470 | int fd = fdchanges [i]; |
|
|
471 | ANFD *anfd = anfds + fd; |
|
|
472 | struct ev_io *w; |
|
|
473 | |
|
|
474 | int wev = 0; |
|
|
475 | |
|
|
476 | for (w = anfd->head; w; w = w->next) |
|
|
477 | wev |= w->events; |
|
|
478 | |
|
|
479 | if (anfd->wev != wev) |
|
|
480 | { |
755 | { |
481 | method_modify (fd, anfd->wev, wev); |
|
|
482 | anfd->wev = wev; |
|
|
483 | } |
|
|
484 | } |
|
|
485 | |
|
|
486 | fdchangecnt = 0; |
|
|
487 | } |
|
|
488 | |
|
|
489 | static void |
|
|
490 | call_pending (void) |
|
|
491 | { |
|
|
492 | while (pendingcnt) |
|
|
493 | { |
|
|
494 | ANPENDING *p = pendings + --pendingcnt; |
756 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
495 | |
757 | |
496 | if (p->w) |
758 | if (p->w) |
497 | { |
759 | { |
498 | p->w->pending = 0; |
760 | p->w->pending = 0; |
499 | p->w->cb (p->w, p->events); |
761 | p->w->cb (EV_A_ p->w, p->events); |
500 | } |
762 | } |
501 | } |
763 | } |
502 | } |
764 | } |
503 | |
765 | |
504 | static void |
766 | static void |
505 | timers_reify (void) |
767 | timers_reify (EV_P) |
506 | { |
768 | { |
507 | while (timercnt && timers [0]->at <= now) |
769 | while (timercnt && timers [0]->at <= mn_now) |
508 | { |
770 | { |
509 | struct ev_timer *w = timers [0]; |
771 | struct ev_timer *w = timers [0]; |
510 | |
|
|
511 | event ((W)w, EV_TIMEOUT); |
|
|
512 | |
772 | |
513 | /* first reschedule or stop timer */ |
773 | /* first reschedule or stop timer */ |
514 | if (w->repeat) |
774 | if (w->repeat) |
515 | { |
775 | { |
|
|
776 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
516 | w->at = now + w->repeat; |
777 | w->at = mn_now + w->repeat; |
517 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
|
|
518 | downheap ((WT *)timers, timercnt, 0); |
778 | downheap ((WT *)timers, timercnt, 0); |
519 | } |
779 | } |
520 | else |
780 | else |
521 | evtimer_stop (w); /* nonrepeating: stop timer */ |
781 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
522 | } |
|
|
523 | } |
|
|
524 | |
782 | |
|
|
783 | event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
784 | } |
|
|
785 | } |
|
|
786 | |
525 | static void |
787 | static void |
526 | periodics_reify (void) |
788 | periodics_reify (EV_P) |
527 | { |
789 | { |
528 | while (periodiccnt && periodics [0]->at <= ev_now) |
790 | while (periodiccnt && periodics [0]->at <= rt_now) |
529 | { |
791 | { |
530 | struct ev_periodic *w = periodics [0]; |
792 | struct ev_periodic *w = periodics [0]; |
531 | |
793 | |
532 | /* first reschedule or stop timer */ |
794 | /* first reschedule or stop timer */ |
533 | if (w->interval) |
795 | if (w->interval) |
534 | { |
796 | { |
535 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
797 | w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; |
536 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
798 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); |
537 | downheap ((WT *)periodics, periodiccnt, 0); |
799 | downheap ((WT *)periodics, periodiccnt, 0); |
538 | } |
800 | } |
539 | else |
801 | else |
540 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
802 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
541 | |
803 | |
542 | event ((W)w, EV_TIMEOUT); |
804 | event (EV_A_ (W)w, EV_PERIODIC); |
543 | } |
805 | } |
544 | } |
806 | } |
545 | |
807 | |
546 | static void |
808 | static void |
547 | periodics_reschedule (ev_tstamp diff) |
809 | periodics_reschedule (EV_P) |
548 | { |
810 | { |
549 | int i; |
811 | int i; |
550 | |
812 | |
551 | /* adjust periodics after time jump */ |
813 | /* adjust periodics after time jump */ |
552 | for (i = 0; i < periodiccnt; ++i) |
814 | for (i = 0; i < periodiccnt; ++i) |
553 | { |
815 | { |
554 | struct ev_periodic *w = periodics [i]; |
816 | struct ev_periodic *w = periodics [i]; |
555 | |
817 | |
556 | if (w->interval) |
818 | if (w->interval) |
557 | { |
819 | { |
558 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
820 | ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; |
559 | |
821 | |
560 | if (fabs (diff) >= 1e-4) |
822 | if (fabs (diff) >= 1e-4) |
561 | { |
823 | { |
562 | evperiodic_stop (w); |
824 | ev_periodic_stop (EV_A_ w); |
563 | evperiodic_start (w); |
825 | ev_periodic_start (EV_A_ w); |
564 | |
826 | |
565 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
827 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
566 | } |
828 | } |
567 | } |
829 | } |
568 | } |
830 | } |
569 | } |
831 | } |
570 | |
832 | |
|
|
833 | inline int |
|
|
834 | time_update_monotonic (EV_P) |
|
|
835 | { |
|
|
836 | mn_now = get_clock (); |
|
|
837 | |
|
|
838 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
839 | { |
|
|
840 | rt_now = rtmn_diff + mn_now; |
|
|
841 | return 0; |
|
|
842 | } |
|
|
843 | else |
|
|
844 | { |
|
|
845 | now_floor = mn_now; |
|
|
846 | rt_now = ev_time (); |
|
|
847 | return 1; |
|
|
848 | } |
|
|
849 | } |
|
|
850 | |
571 | static void |
851 | static void |
572 | time_update (void) |
852 | time_update (EV_P) |
573 | { |
853 | { |
574 | int i; |
854 | int i; |
575 | |
855 | |
576 | ev_now = ev_time (); |
856 | #if EV_USE_MONOTONIC |
577 | |
|
|
578 | if (have_monotonic) |
857 | if (expect_true (have_monotonic)) |
579 | { |
858 | { |
580 | ev_tstamp odiff = diff; |
859 | if (time_update_monotonic (EV_A)) |
581 | |
|
|
582 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
583 | { |
860 | { |
584 | now = get_clock (); |
861 | ev_tstamp odiff = rtmn_diff; |
|
|
862 | |
|
|
863 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
864 | { |
585 | diff = ev_now - now; |
865 | rtmn_diff = rt_now - mn_now; |
586 | |
866 | |
587 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
867 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
588 | return; /* all is well */ |
868 | return; /* all is well */ |
589 | |
869 | |
590 | ev_now = ev_time (); |
870 | rt_now = ev_time (); |
|
|
871 | mn_now = get_clock (); |
|
|
872 | now_floor = mn_now; |
|
|
873 | } |
|
|
874 | |
|
|
875 | periodics_reschedule (EV_A); |
|
|
876 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
877 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
591 | } |
878 | } |
592 | |
|
|
593 | periodics_reschedule (diff - odiff); |
|
|
594 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
595 | } |
879 | } |
596 | else |
880 | else |
|
|
881 | #endif |
597 | { |
882 | { |
598 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
883 | rt_now = ev_time (); |
|
|
884 | |
|
|
885 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
599 | { |
886 | { |
600 | periodics_reschedule (ev_now - now); |
887 | periodics_reschedule (EV_A); |
601 | |
888 | |
602 | /* adjust timers. this is easy, as the offset is the same for all */ |
889 | /* adjust timers. this is easy, as the offset is the same for all */ |
603 | for (i = 0; i < timercnt; ++i) |
890 | for (i = 0; i < timercnt; ++i) |
604 | timers [i]->at += diff; |
891 | timers [i]->at += rt_now - mn_now; |
605 | } |
892 | } |
606 | |
893 | |
607 | now = ev_now; |
894 | mn_now = rt_now; |
608 | } |
895 | } |
609 | } |
896 | } |
610 | |
897 | |
611 | int ev_loop_done; |
898 | void |
|
|
899 | ev_ref (EV_P) |
|
|
900 | { |
|
|
901 | ++activecnt; |
|
|
902 | } |
612 | |
903 | |
|
|
904 | void |
|
|
905 | ev_unref (EV_P) |
|
|
906 | { |
|
|
907 | --activecnt; |
|
|
908 | } |
|
|
909 | |
|
|
910 | static int loop_done; |
|
|
911 | |
|
|
912 | void |
613 | void ev_loop (int flags) |
913 | ev_loop (EV_P_ int flags) |
614 | { |
914 | { |
615 | double block; |
915 | double block; |
616 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
916 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
617 | |
917 | |
618 | do |
918 | do |
619 | { |
919 | { |
620 | /* queue check watchers (and execute them) */ |
920 | /* queue check watchers (and execute them) */ |
621 | if (preparecnt) |
921 | if (expect_false (preparecnt)) |
622 | { |
922 | { |
623 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
923 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
624 | call_pending (); |
924 | call_pending (EV_A); |
625 | } |
925 | } |
626 | |
926 | |
627 | /* update fd-related kernel structures */ |
927 | /* update fd-related kernel structures */ |
628 | fd_reify (); |
928 | fd_reify (EV_A); |
629 | |
929 | |
630 | /* calculate blocking time */ |
930 | /* calculate blocking time */ |
631 | |
931 | |
632 | /* we only need this for !monotonic clockor timers, but as we basically |
932 | /* we only need this for !monotonic clockor timers, but as we basically |
633 | always have timers, we just calculate it always */ |
933 | always have timers, we just calculate it always */ |
|
|
934 | #if EV_USE_MONOTONIC |
|
|
935 | if (expect_true (have_monotonic)) |
|
|
936 | time_update_monotonic (EV_A); |
|
|
937 | else |
|
|
938 | #endif |
|
|
939 | { |
634 | ev_now = ev_time (); |
940 | rt_now = ev_time (); |
|
|
941 | mn_now = rt_now; |
|
|
942 | } |
635 | |
943 | |
636 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
944 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
637 | block = 0.; |
945 | block = 0.; |
638 | else |
946 | else |
639 | { |
947 | { |
640 | block = MAX_BLOCKTIME; |
948 | block = MAX_BLOCKTIME; |
641 | |
949 | |
642 | if (timercnt) |
950 | if (timercnt) |
643 | { |
951 | { |
644 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
952 | ev_tstamp to = timers [0]->at - mn_now + method_fudge; |
645 | if (block > to) block = to; |
953 | if (block > to) block = to; |
646 | } |
954 | } |
647 | |
955 | |
648 | if (periodiccnt) |
956 | if (periodiccnt) |
649 | { |
957 | { |
650 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
958 | ev_tstamp to = periodics [0]->at - rt_now + method_fudge; |
651 | if (block > to) block = to; |
959 | if (block > to) block = to; |
652 | } |
960 | } |
653 | |
961 | |
654 | if (block < 0.) block = 0.; |
962 | if (block < 0.) block = 0.; |
655 | } |
963 | } |
656 | |
964 | |
657 | method_poll (block); |
965 | method_poll (EV_A_ block); |
658 | |
966 | |
659 | /* update ev_now, do magic */ |
967 | /* update rt_now, do magic */ |
660 | time_update (); |
968 | time_update (EV_A); |
661 | |
969 | |
662 | /* queue pending timers and reschedule them */ |
970 | /* queue pending timers and reschedule them */ |
663 | timers_reify (); /* relative timers called last */ |
971 | timers_reify (EV_A); /* relative timers called last */ |
664 | periodics_reify (); /* absolute timers called first */ |
972 | periodics_reify (EV_A); /* absolute timers called first */ |
665 | |
973 | |
666 | /* queue idle watchers unless io or timers are pending */ |
974 | /* queue idle watchers unless io or timers are pending */ |
667 | if (!pendingcnt) |
975 | if (!pendingcnt) |
668 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
976 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
669 | |
977 | |
670 | /* queue check watchers, to be executed first */ |
978 | /* queue check watchers, to be executed first */ |
671 | if (checkcnt) |
979 | if (checkcnt) |
672 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
980 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
673 | |
981 | |
674 | call_pending (); |
982 | call_pending (EV_A); |
675 | } |
983 | } |
676 | while (!ev_loop_done); |
984 | while (activecnt && !loop_done); |
677 | |
985 | |
678 | if (ev_loop_done != 2) |
986 | if (loop_done != 2) |
679 | ev_loop_done = 0; |
987 | loop_done = 0; |
|
|
988 | } |
|
|
989 | |
|
|
990 | void |
|
|
991 | ev_unloop (EV_P_ int how) |
|
|
992 | { |
|
|
993 | loop_done = how; |
680 | } |
994 | } |
681 | |
995 | |
682 | /*****************************************************************************/ |
996 | /*****************************************************************************/ |
683 | |
997 | |
684 | static void |
998 | inline void |
685 | wlist_add (WL *head, WL elem) |
999 | wlist_add (WL *head, WL elem) |
686 | { |
1000 | { |
687 | elem->next = *head; |
1001 | elem->next = *head; |
688 | *head = elem; |
1002 | *head = elem; |
689 | } |
1003 | } |
690 | |
1004 | |
691 | static void |
1005 | inline void |
692 | wlist_del (WL *head, WL elem) |
1006 | wlist_del (WL *head, WL elem) |
693 | { |
1007 | { |
694 | while (*head) |
1008 | while (*head) |
695 | { |
1009 | { |
696 | if (*head == elem) |
1010 | if (*head == elem) |
… | |
… | |
701 | |
1015 | |
702 | head = &(*head)->next; |
1016 | head = &(*head)->next; |
703 | } |
1017 | } |
704 | } |
1018 | } |
705 | |
1019 | |
706 | static void |
1020 | inline void |
707 | ev_clear (W w) |
1021 | ev_clear_pending (EV_P_ W w) |
708 | { |
1022 | { |
709 | if (w->pending) |
1023 | if (w->pending) |
710 | { |
1024 | { |
711 | pendings [w->pending - 1].w = 0; |
1025 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
712 | w->pending = 0; |
1026 | w->pending = 0; |
713 | } |
1027 | } |
714 | } |
1028 | } |
715 | |
1029 | |
716 | static void |
1030 | inline void |
717 | ev_start (W w, int active) |
1031 | ev_start (EV_P_ W w, int active) |
718 | { |
1032 | { |
|
|
1033 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1034 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1035 | |
719 | w->active = active; |
1036 | w->active = active; |
|
|
1037 | ev_ref (EV_A); |
720 | } |
1038 | } |
721 | |
1039 | |
722 | static void |
1040 | inline void |
723 | ev_stop (W w) |
1041 | ev_stop (EV_P_ W w) |
724 | { |
1042 | { |
|
|
1043 | ev_unref (EV_A); |
725 | w->active = 0; |
1044 | w->active = 0; |
726 | } |
1045 | } |
727 | |
1046 | |
728 | /*****************************************************************************/ |
1047 | /*****************************************************************************/ |
729 | |
1048 | |
730 | void |
1049 | void |
731 | evio_start (struct ev_io *w) |
1050 | ev_io_start (EV_P_ struct ev_io *w) |
732 | { |
1051 | { |
|
|
1052 | int fd = w->fd; |
|
|
1053 | |
733 | if (ev_is_active (w)) |
1054 | if (ev_is_active (w)) |
734 | return; |
1055 | return; |
735 | |
1056 | |
736 | int fd = w->fd; |
1057 | assert (("ev_io_start called with negative fd", fd >= 0)); |
737 | |
1058 | |
738 | ev_start ((W)w, 1); |
1059 | ev_start (EV_A_ (W)w, 1); |
739 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1060 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
740 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1061 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
741 | |
1062 | |
742 | ++fdchangecnt; |
1063 | fd_change (EV_A_ fd); |
743 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
744 | fdchanges [fdchangecnt - 1] = fd; |
|
|
745 | |
|
|
746 | if (w->fd == 9) |
|
|
747 | printf ("start %p:%x\n", w, w->events);//D |
|
|
748 | } |
1064 | } |
749 | |
1065 | |
750 | void |
1066 | void |
751 | evio_stop (struct ev_io *w) |
1067 | ev_io_stop (EV_P_ struct ev_io *w) |
752 | { |
1068 | { |
753 | if (w->fd == 9) |
1069 | ev_clear_pending (EV_A_ (W)w); |
754 | printf ("stop %p:%x\n", w, w->events);//D |
|
|
755 | ev_clear ((W)w); |
|
|
756 | if (!ev_is_active (w)) |
1070 | if (!ev_is_active (w)) |
757 | return; |
1071 | return; |
758 | |
1072 | |
759 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1073 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
760 | ev_stop ((W)w); |
1074 | ev_stop (EV_A_ (W)w); |
761 | |
1075 | |
762 | ++fdchangecnt; |
1076 | fd_change (EV_A_ w->fd); |
763 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
764 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
765 | } |
1077 | } |
766 | |
1078 | |
767 | void |
1079 | void |
768 | evtimer_start (struct ev_timer *w) |
1080 | ev_timer_start (EV_P_ struct ev_timer *w) |
769 | { |
1081 | { |
770 | if (ev_is_active (w)) |
1082 | if (ev_is_active (w)) |
771 | return; |
1083 | return; |
772 | |
1084 | |
773 | w->at += now; |
1085 | w->at += mn_now; |
774 | |
1086 | |
775 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1087 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
776 | |
1088 | |
777 | ev_start ((W)w, ++timercnt); |
1089 | ev_start (EV_A_ (W)w, ++timercnt); |
778 | array_needsize (timers, timermax, timercnt, ); |
1090 | array_needsize (timers, timermax, timercnt, ); |
779 | timers [timercnt - 1] = w; |
1091 | timers [timercnt - 1] = w; |
780 | upheap ((WT *)timers, timercnt - 1); |
1092 | upheap ((WT *)timers, timercnt - 1); |
781 | } |
1093 | } |
782 | |
1094 | |
783 | void |
1095 | void |
784 | evtimer_stop (struct ev_timer *w) |
1096 | ev_timer_stop (EV_P_ struct ev_timer *w) |
785 | { |
1097 | { |
786 | ev_clear ((W)w); |
1098 | ev_clear_pending (EV_A_ (W)w); |
787 | if (!ev_is_active (w)) |
1099 | if (!ev_is_active (w)) |
788 | return; |
1100 | return; |
789 | |
1101 | |
790 | if (w->active < timercnt--) |
1102 | if (w->active < timercnt--) |
791 | { |
1103 | { |
… | |
… | |
793 | downheap ((WT *)timers, timercnt, w->active - 1); |
1105 | downheap ((WT *)timers, timercnt, w->active - 1); |
794 | } |
1106 | } |
795 | |
1107 | |
796 | w->at = w->repeat; |
1108 | w->at = w->repeat; |
797 | |
1109 | |
798 | ev_stop ((W)w); |
1110 | ev_stop (EV_A_ (W)w); |
799 | } |
1111 | } |
800 | |
1112 | |
801 | void |
1113 | void |
802 | evtimer_again (struct ev_timer *w) |
1114 | ev_timer_again (EV_P_ struct ev_timer *w) |
803 | { |
1115 | { |
804 | if (ev_is_active (w)) |
1116 | if (ev_is_active (w)) |
805 | { |
1117 | { |
806 | if (w->repeat) |
1118 | if (w->repeat) |
807 | { |
1119 | { |
808 | w->at = now + w->repeat; |
1120 | w->at = mn_now + w->repeat; |
809 | downheap ((WT *)timers, timercnt, w->active - 1); |
1121 | downheap ((WT *)timers, timercnt, w->active - 1); |
810 | } |
1122 | } |
811 | else |
1123 | else |
812 | evtimer_stop (w); |
1124 | ev_timer_stop (EV_A_ w); |
813 | } |
1125 | } |
814 | else if (w->repeat) |
1126 | else if (w->repeat) |
815 | evtimer_start (w); |
1127 | ev_timer_start (EV_A_ w); |
816 | } |
1128 | } |
817 | |
1129 | |
818 | void |
1130 | void |
819 | evperiodic_start (struct ev_periodic *w) |
1131 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
820 | { |
1132 | { |
821 | if (ev_is_active (w)) |
1133 | if (ev_is_active (w)) |
822 | return; |
1134 | return; |
823 | |
1135 | |
824 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1136 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
825 | |
1137 | |
826 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1138 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
827 | if (w->interval) |
1139 | if (w->interval) |
828 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1140 | w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; |
829 | |
1141 | |
830 | ev_start ((W)w, ++periodiccnt); |
1142 | ev_start (EV_A_ (W)w, ++periodiccnt); |
831 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1143 | array_needsize (periodics, periodicmax, periodiccnt, ); |
832 | periodics [periodiccnt - 1] = w; |
1144 | periodics [periodiccnt - 1] = w; |
833 | upheap ((WT *)periodics, periodiccnt - 1); |
1145 | upheap ((WT *)periodics, periodiccnt - 1); |
834 | } |
1146 | } |
835 | |
1147 | |
836 | void |
1148 | void |
837 | evperiodic_stop (struct ev_periodic *w) |
1149 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
838 | { |
1150 | { |
839 | ev_clear ((W)w); |
1151 | ev_clear_pending (EV_A_ (W)w); |
840 | if (!ev_is_active (w)) |
1152 | if (!ev_is_active (w)) |
841 | return; |
1153 | return; |
842 | |
1154 | |
843 | if (w->active < periodiccnt--) |
1155 | if (w->active < periodiccnt--) |
844 | { |
1156 | { |
845 | periodics [w->active - 1] = periodics [periodiccnt]; |
1157 | periodics [w->active - 1] = periodics [periodiccnt]; |
846 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1158 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
847 | } |
1159 | } |
848 | |
1160 | |
849 | ev_stop ((W)w); |
1161 | ev_stop (EV_A_ (W)w); |
850 | } |
1162 | } |
851 | |
1163 | |
852 | void |
1164 | void |
853 | evsignal_start (struct ev_signal *w) |
1165 | ev_idle_start (EV_P_ struct ev_idle *w) |
854 | { |
1166 | { |
855 | if (ev_is_active (w)) |
1167 | if (ev_is_active (w)) |
856 | return; |
1168 | return; |
857 | |
1169 | |
|
|
1170 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1171 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
1172 | idles [idlecnt - 1] = w; |
|
|
1173 | } |
|
|
1174 | |
|
|
1175 | void |
|
|
1176 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1177 | { |
|
|
1178 | ev_clear_pending (EV_A_ (W)w); |
|
|
1179 | if (ev_is_active (w)) |
|
|
1180 | return; |
|
|
1181 | |
|
|
1182 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
1183 | ev_stop (EV_A_ (W)w); |
|
|
1184 | } |
|
|
1185 | |
|
|
1186 | void |
|
|
1187 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1188 | { |
|
|
1189 | if (ev_is_active (w)) |
|
|
1190 | return; |
|
|
1191 | |
|
|
1192 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1193 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1194 | prepares [preparecnt - 1] = w; |
|
|
1195 | } |
|
|
1196 | |
|
|
1197 | void |
|
|
1198 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1199 | { |
|
|
1200 | ev_clear_pending (EV_A_ (W)w); |
|
|
1201 | if (ev_is_active (w)) |
|
|
1202 | return; |
|
|
1203 | |
|
|
1204 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
1205 | ev_stop (EV_A_ (W)w); |
|
|
1206 | } |
|
|
1207 | |
|
|
1208 | void |
|
|
1209 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1210 | { |
|
|
1211 | if (ev_is_active (w)) |
|
|
1212 | return; |
|
|
1213 | |
|
|
1214 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1215 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
1216 | checks [checkcnt - 1] = w; |
|
|
1217 | } |
|
|
1218 | |
|
|
1219 | void |
|
|
1220 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1221 | { |
|
|
1222 | ev_clear_pending (EV_A_ (W)w); |
|
|
1223 | if (ev_is_active (w)) |
|
|
1224 | return; |
|
|
1225 | |
|
|
1226 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
1227 | ev_stop (EV_A_ (W)w); |
|
|
1228 | } |
|
|
1229 | |
|
|
1230 | #ifndef SA_RESTART |
|
|
1231 | # define SA_RESTART 0 |
|
|
1232 | #endif |
|
|
1233 | |
|
|
1234 | void |
|
|
1235 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1236 | { |
|
|
1237 | #if EV_MULTIPLICITY |
|
|
1238 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
|
|
1239 | #endif |
|
|
1240 | if (ev_is_active (w)) |
|
|
1241 | return; |
|
|
1242 | |
|
|
1243 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1244 | |
858 | ev_start ((W)w, 1); |
1245 | ev_start (EV_A_ (W)w, 1); |
859 | array_needsize (signals, signalmax, w->signum, signals_init); |
1246 | array_needsize (signals, signalmax, w->signum, signals_init); |
860 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1247 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
861 | |
1248 | |
862 | if (!w->next) |
1249 | if (!w->next) |
863 | { |
1250 | { |
864 | struct sigaction sa; |
1251 | struct sigaction sa; |
865 | sa.sa_handler = sighandler; |
1252 | sa.sa_handler = sighandler; |
866 | sigfillset (&sa.sa_mask); |
1253 | sigfillset (&sa.sa_mask); |
867 | sa.sa_flags = 0; |
1254 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
868 | sigaction (w->signum, &sa, 0); |
1255 | sigaction (w->signum, &sa, 0); |
869 | } |
1256 | } |
870 | } |
1257 | } |
871 | |
1258 | |
872 | void |
1259 | void |
873 | evsignal_stop (struct ev_signal *w) |
1260 | ev_signal_stop (EV_P_ struct ev_signal *w) |
874 | { |
1261 | { |
875 | ev_clear ((W)w); |
1262 | ev_clear_pending (EV_A_ (W)w); |
876 | if (!ev_is_active (w)) |
1263 | if (!ev_is_active (w)) |
877 | return; |
1264 | return; |
878 | |
1265 | |
879 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1266 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
880 | ev_stop ((W)w); |
1267 | ev_stop (EV_A_ (W)w); |
881 | |
1268 | |
882 | if (!signals [w->signum - 1].head) |
1269 | if (!signals [w->signum - 1].head) |
883 | signal (w->signum, SIG_DFL); |
1270 | signal (w->signum, SIG_DFL); |
884 | } |
1271 | } |
885 | |
1272 | |
886 | void evidle_start (struct ev_idle *w) |
1273 | void |
|
|
1274 | ev_child_start (EV_P_ struct ev_child *w) |
887 | { |
1275 | { |
|
|
1276 | #if EV_MULTIPLICITY |
|
|
1277 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1278 | #endif |
888 | if (ev_is_active (w)) |
1279 | if (ev_is_active (w)) |
889 | return; |
1280 | return; |
890 | |
1281 | |
891 | ev_start ((W)w, ++idlecnt); |
1282 | ev_start (EV_A_ (W)w, 1); |
892 | array_needsize (idles, idlemax, idlecnt, ); |
1283 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
893 | idles [idlecnt - 1] = w; |
|
|
894 | } |
1284 | } |
895 | |
1285 | |
896 | void evidle_stop (struct ev_idle *w) |
1286 | void |
|
|
1287 | ev_child_stop (EV_P_ struct ev_child *w) |
897 | { |
1288 | { |
898 | ev_clear ((W)w); |
1289 | ev_clear_pending (EV_A_ (W)w); |
899 | if (ev_is_active (w)) |
1290 | if (ev_is_active (w)) |
900 | return; |
1291 | return; |
901 | |
1292 | |
902 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
903 | ev_stop ((W)w); |
|
|
904 | } |
|
|
905 | |
|
|
906 | void evprepare_start (struct ev_prepare *w) |
|
|
907 | { |
|
|
908 | if (ev_is_active (w)) |
|
|
909 | return; |
|
|
910 | |
|
|
911 | ev_start ((W)w, ++preparecnt); |
|
|
912 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
913 | prepares [preparecnt - 1] = w; |
|
|
914 | } |
|
|
915 | |
|
|
916 | void evprepare_stop (struct ev_prepare *w) |
|
|
917 | { |
|
|
918 | ev_clear ((W)w); |
|
|
919 | if (ev_is_active (w)) |
|
|
920 | return; |
|
|
921 | |
|
|
922 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
923 | ev_stop ((W)w); |
|
|
924 | } |
|
|
925 | |
|
|
926 | void evcheck_start (struct ev_check *w) |
|
|
927 | { |
|
|
928 | if (ev_is_active (w)) |
|
|
929 | return; |
|
|
930 | |
|
|
931 | ev_start ((W)w, ++checkcnt); |
|
|
932 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
933 | checks [checkcnt - 1] = w; |
|
|
934 | } |
|
|
935 | |
|
|
936 | void evcheck_stop (struct ev_check *w) |
|
|
937 | { |
|
|
938 | ev_clear ((W)w); |
|
|
939 | if (ev_is_active (w)) |
|
|
940 | return; |
|
|
941 | |
|
|
942 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
943 | ev_stop ((W)w); |
|
|
944 | } |
|
|
945 | |
|
|
946 | void evchild_start (struct ev_child *w) |
|
|
947 | { |
|
|
948 | if (ev_is_active (w)) |
|
|
949 | return; |
|
|
950 | |
|
|
951 | ev_start ((W)w, 1); |
|
|
952 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
953 | } |
|
|
954 | |
|
|
955 | void evchild_stop (struct ev_child *w) |
|
|
956 | { |
|
|
957 | ev_clear ((W)w); |
|
|
958 | if (ev_is_active (w)) |
|
|
959 | return; |
|
|
960 | |
|
|
961 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1293 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
962 | ev_stop ((W)w); |
1294 | ev_stop (EV_A_ (W)w); |
963 | } |
1295 | } |
964 | |
1296 | |
965 | /*****************************************************************************/ |
1297 | /*****************************************************************************/ |
966 | |
1298 | |
967 | struct ev_once |
1299 | struct ev_once |
… | |
… | |
971 | void (*cb)(int revents, void *arg); |
1303 | void (*cb)(int revents, void *arg); |
972 | void *arg; |
1304 | void *arg; |
973 | }; |
1305 | }; |
974 | |
1306 | |
975 | static void |
1307 | static void |
976 | once_cb (struct ev_once *once, int revents) |
1308 | once_cb (EV_P_ struct ev_once *once, int revents) |
977 | { |
1309 | { |
978 | void (*cb)(int revents, void *arg) = once->cb; |
1310 | void (*cb)(int revents, void *arg) = once->cb; |
979 | void *arg = once->arg; |
1311 | void *arg = once->arg; |
980 | |
1312 | |
981 | evio_stop (&once->io); |
1313 | ev_io_stop (EV_A_ &once->io); |
982 | evtimer_stop (&once->to); |
1314 | ev_timer_stop (EV_A_ &once->to); |
983 | free (once); |
1315 | free (once); |
984 | |
1316 | |
985 | cb (revents, arg); |
1317 | cb (revents, arg); |
986 | } |
1318 | } |
987 | |
1319 | |
988 | static void |
1320 | static void |
989 | once_cb_io (struct ev_io *w, int revents) |
1321 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
990 | { |
1322 | { |
991 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1323 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
992 | } |
1324 | } |
993 | |
1325 | |
994 | static void |
1326 | static void |
995 | once_cb_to (struct ev_timer *w, int revents) |
1327 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
996 | { |
1328 | { |
997 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1329 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
998 | } |
1330 | } |
999 | |
1331 | |
1000 | void |
1332 | void |
1001 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1333 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1002 | { |
1334 | { |
1003 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1335 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1004 | |
1336 | |
1005 | if (!once) |
1337 | if (!once) |
1006 | cb (EV_ERROR, arg); |
1338 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1007 | else |
1339 | else |
1008 | { |
1340 | { |
1009 | once->cb = cb; |
1341 | once->cb = cb; |
1010 | once->arg = arg; |
1342 | once->arg = arg; |
1011 | |
1343 | |
1012 | evw_init (&once->io, once_cb_io); |
1344 | ev_watcher_init (&once->io, once_cb_io); |
1013 | |
|
|
1014 | if (fd >= 0) |
1345 | if (fd >= 0) |
1015 | { |
1346 | { |
1016 | evio_set (&once->io, fd, events); |
1347 | ev_io_set (&once->io, fd, events); |
1017 | evio_start (&once->io); |
1348 | ev_io_start (EV_A_ &once->io); |
1018 | } |
1349 | } |
1019 | |
1350 | |
1020 | evw_init (&once->to, once_cb_to); |
1351 | ev_watcher_init (&once->to, once_cb_to); |
1021 | |
|
|
1022 | if (timeout >= 0.) |
1352 | if (timeout >= 0.) |
1023 | { |
1353 | { |
1024 | evtimer_set (&once->to, timeout, 0.); |
1354 | ev_timer_set (&once->to, timeout, 0.); |
1025 | evtimer_start (&once->to); |
1355 | ev_timer_start (EV_A_ &once->to); |
1026 | } |
1356 | } |
1027 | } |
1357 | } |
1028 | } |
1358 | } |
1029 | |
1359 | |
1030 | /*****************************************************************************/ |
|
|
1031 | |
|
|
1032 | #if 0 |
|
|
1033 | |
|
|
1034 | struct ev_io wio; |
|
|
1035 | |
|
|
1036 | static void |
|
|
1037 | sin_cb (struct ev_io *w, int revents) |
|
|
1038 | { |
|
|
1039 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
1040 | } |
|
|
1041 | |
|
|
1042 | static void |
|
|
1043 | ocb (struct ev_timer *w, int revents) |
|
|
1044 | { |
|
|
1045 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
1046 | evtimer_stop (w); |
|
|
1047 | evtimer_start (w); |
|
|
1048 | } |
|
|
1049 | |
|
|
1050 | static void |
|
|
1051 | scb (struct ev_signal *w, int revents) |
|
|
1052 | { |
|
|
1053 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1054 | evio_stop (&wio); |
|
|
1055 | evio_start (&wio); |
|
|
1056 | } |
|
|
1057 | |
|
|
1058 | static void |
|
|
1059 | gcb (struct ev_signal *w, int revents) |
|
|
1060 | { |
|
|
1061 | fprintf (stderr, "generic %x\n", revents); |
|
|
1062 | |
|
|
1063 | } |
|
|
1064 | |
|
|
1065 | int main (void) |
|
|
1066 | { |
|
|
1067 | ev_init (0); |
|
|
1068 | |
|
|
1069 | evio_init (&wio, sin_cb, 0, EV_READ); |
|
|
1070 | evio_start (&wio); |
|
|
1071 | |
|
|
1072 | struct ev_timer t[10000]; |
|
|
1073 | |
|
|
1074 | #if 0 |
|
|
1075 | int i; |
|
|
1076 | for (i = 0; i < 10000; ++i) |
|
|
1077 | { |
|
|
1078 | struct ev_timer *w = t + i; |
|
|
1079 | evw_init (w, ocb, i); |
|
|
1080 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1081 | evtimer_start (w); |
|
|
1082 | if (drand48 () < 0.5) |
|
|
1083 | evtimer_stop (w); |
|
|
1084 | } |
|
|
1085 | #endif |
|
|
1086 | |
|
|
1087 | struct ev_timer t1; |
|
|
1088 | evtimer_init (&t1, ocb, 5, 10); |
|
|
1089 | evtimer_start (&t1); |
|
|
1090 | |
|
|
1091 | struct ev_signal sig; |
|
|
1092 | evsignal_init (&sig, scb, SIGQUIT); |
|
|
1093 | evsignal_start (&sig); |
|
|
1094 | |
|
|
1095 | struct ev_check cw; |
|
|
1096 | evcheck_init (&cw, gcb); |
|
|
1097 | evcheck_start (&cw); |
|
|
1098 | |
|
|
1099 | struct ev_idle iw; |
|
|
1100 | evidle_init (&iw, gcb); |
|
|
1101 | evidle_start (&iw); |
|
|
1102 | |
|
|
1103 | ev_loop (0); |
|
|
1104 | |
|
|
1105 | return 0; |
|
|
1106 | } |
|
|
1107 | |
|
|
1108 | #endif |
|
|
1109 | |
|
|
1110 | |
|
|
1111 | |
|
|
1112 | |
|
|