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