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