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root |
1.17 |
/* |
2 |
root |
1.36 |
* libev event processing core, watcher management |
3 |
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* |
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root |
1.17 |
* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials provided |
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* with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
31 |
root |
1.58 |
#ifndef EV_EMBED |
32 |
root |
1.29 |
# include "config.h" |
33 |
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#endif |
34 |
root |
1.17 |
|
35 |
root |
1.1 |
#include <math.h> |
36 |
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#include <stdlib.h> |
37 |
root |
1.7 |
#include <unistd.h> |
38 |
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#include <fcntl.h> |
39 |
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#include <signal.h> |
40 |
root |
1.16 |
#include <stddef.h> |
41 |
root |
1.1 |
|
42 |
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#include <stdio.h> |
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|
44 |
root |
1.4 |
#include <assert.h> |
45 |
root |
1.1 |
#include <errno.h> |
46 |
root |
1.22 |
#include <sys/types.h> |
47 |
root |
1.45 |
#ifndef WIN32 |
48 |
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# include <sys/wait.h> |
49 |
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#endif |
50 |
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1.1 |
#include <sys/time.h> |
51 |
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#include <time.h> |
52 |
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|
53 |
root |
1.40 |
/**/ |
54 |
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55 |
root |
1.29 |
#ifndef EV_USE_MONOTONIC |
56 |
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1.37 |
# define EV_USE_MONOTONIC 1 |
57 |
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#endif |
58 |
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59 |
root |
1.29 |
#ifndef EV_USE_SELECT |
60 |
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# define EV_USE_SELECT 1 |
61 |
root |
1.10 |
#endif |
62 |
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63 |
root |
1.51 |
#ifndef EV_USEV_POLL |
64 |
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# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */ |
65 |
root |
1.41 |
#endif |
66 |
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67 |
root |
1.29 |
#ifndef EV_USE_EPOLL |
68 |
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# define EV_USE_EPOLL 0 |
69 |
root |
1.10 |
#endif |
70 |
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71 |
root |
1.44 |
#ifndef EV_USE_KQUEUE |
72 |
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# define EV_USE_KQUEUE 0 |
73 |
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#endif |
74 |
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75 |
root |
1.40 |
#ifndef EV_USE_REALTIME |
76 |
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# define EV_USE_REALTIME 1 |
77 |
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#endif |
78 |
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79 |
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/**/ |
80 |
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81 |
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#ifndef CLOCK_MONOTONIC |
82 |
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# undef EV_USE_MONOTONIC |
83 |
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# define EV_USE_MONOTONIC 0 |
84 |
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#endif |
85 |
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86 |
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1.31 |
#ifndef CLOCK_REALTIME |
87 |
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1.40 |
# undef EV_USE_REALTIME |
88 |
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1.31 |
# define EV_USE_REALTIME 0 |
89 |
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#endif |
90 |
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1.40 |
|
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/**/ |
92 |
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1.1 |
|
93 |
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1.4 |
#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
94 |
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1.40 |
#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
95 |
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1.31 |
#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
96 |
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1.40 |
/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
97 |
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1.1 |
|
98 |
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1.58 |
#ifndef EV_EMBED |
99 |
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# include "ev.h" |
100 |
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#endif |
101 |
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1.1 |
|
102 |
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1.40 |
#if __GNUC__ >= 3 |
103 |
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# define expect(expr,value) __builtin_expect ((expr),(value)) |
104 |
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# define inline inline |
105 |
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#else |
106 |
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# define expect(expr,value) (expr) |
107 |
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# define inline static |
108 |
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#endif |
109 |
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110 |
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#define expect_false(expr) expect ((expr) != 0, 0) |
111 |
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#define expect_true(expr) expect ((expr) != 0, 1) |
112 |
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113 |
root |
1.42 |
#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
114 |
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#define ABSPRI(w) ((w)->priority - EV_MINPRI) |
115 |
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116 |
root |
1.10 |
typedef struct ev_watcher *W; |
117 |
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typedef struct ev_watcher_list *WL; |
118 |
root |
1.12 |
typedef struct ev_watcher_time *WT; |
119 |
root |
1.10 |
|
120 |
root |
1.54 |
static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
121 |
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122 |
root |
1.53 |
/*****************************************************************************/ |
123 |
root |
1.1 |
|
124 |
root |
1.53 |
typedef struct |
125 |
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{ |
126 |
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struct ev_watcher_list *head; |
127 |
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unsigned char events; |
128 |
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unsigned char reify; |
129 |
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} ANFD; |
130 |
root |
1.1 |
|
131 |
root |
1.53 |
typedef struct |
132 |
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{ |
133 |
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W w; |
134 |
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int events; |
135 |
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} ANPENDING; |
136 |
root |
1.51 |
|
137 |
root |
1.55 |
#if EV_MULTIPLICITY |
138 |
root |
1.54 |
|
139 |
root |
1.53 |
struct ev_loop |
140 |
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{ |
141 |
root |
1.54 |
# define VAR(name,decl) decl; |
142 |
root |
1.53 |
# include "ev_vars.h" |
143 |
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}; |
144 |
root |
1.54 |
# undef VAR |
145 |
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# include "ev_wrap.h" |
146 |
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147 |
root |
1.53 |
#else |
148 |
root |
1.54 |
|
149 |
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# define VAR(name,decl) static decl; |
150 |
root |
1.53 |
# include "ev_vars.h" |
151 |
root |
1.54 |
# undef VAR |
152 |
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153 |
root |
1.51 |
#endif |
154 |
root |
1.1 |
|
155 |
root |
1.8 |
/*****************************************************************************/ |
156 |
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|
157 |
root |
1.51 |
inline ev_tstamp |
158 |
root |
1.1 |
ev_time (void) |
159 |
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{ |
160 |
root |
1.29 |
#if EV_USE_REALTIME |
161 |
root |
1.1 |
struct timespec ts; |
162 |
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clock_gettime (CLOCK_REALTIME, &ts); |
163 |
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return ts.tv_sec + ts.tv_nsec * 1e-9; |
164 |
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#else |
165 |
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struct timeval tv; |
166 |
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gettimeofday (&tv, 0); |
167 |
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return tv.tv_sec + tv.tv_usec * 1e-6; |
168 |
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#endif |
169 |
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} |
170 |
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|
171 |
root |
1.51 |
inline ev_tstamp |
172 |
root |
1.1 |
get_clock (void) |
173 |
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{ |
174 |
root |
1.29 |
#if EV_USE_MONOTONIC |
175 |
root |
1.40 |
if (expect_true (have_monotonic)) |
176 |
root |
1.1 |
{ |
177 |
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struct timespec ts; |
178 |
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clock_gettime (CLOCK_MONOTONIC, &ts); |
179 |
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return ts.tv_sec + ts.tv_nsec * 1e-9; |
180 |
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} |
181 |
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#endif |
182 |
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183 |
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return ev_time (); |
184 |
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} |
185 |
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186 |
root |
1.51 |
ev_tstamp |
187 |
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ev_now (EV_P) |
188 |
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{ |
189 |
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return rt_now; |
190 |
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} |
191 |
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192 |
root |
1.30 |
#define array_roundsize(base,n) ((n) | 4 & ~3) |
193 |
root |
1.29 |
|
194 |
root |
1.1 |
#define array_needsize(base,cur,cnt,init) \ |
195 |
root |
1.40 |
if (expect_false ((cnt) > cur)) \ |
196 |
root |
1.1 |
{ \ |
197 |
root |
1.23 |
int newcnt = cur; \ |
198 |
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do \ |
199 |
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{ \ |
200 |
root |
1.30 |
newcnt = array_roundsize (base, newcnt << 1); \ |
201 |
root |
1.23 |
} \ |
202 |
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while ((cnt) > newcnt); \ |
203 |
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\ |
204 |
root |
1.1 |
base = realloc (base, sizeof (*base) * (newcnt)); \ |
205 |
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init (base + cur, newcnt - cur); \ |
206 |
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cur = newcnt; \ |
207 |
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} |
208 |
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209 |
root |
1.8 |
/*****************************************************************************/ |
210 |
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211 |
root |
1.1 |
static void |
212 |
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anfds_init (ANFD *base, int count) |
213 |
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{ |
214 |
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while (count--) |
215 |
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{ |
216 |
root |
1.27 |
base->head = 0; |
217 |
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base->events = EV_NONE; |
218 |
root |
1.33 |
base->reify = 0; |
219 |
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|
220 |
root |
1.1 |
++base; |
221 |
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} |
222 |
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} |
223 |
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224 |
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static void |
225 |
root |
1.51 |
event (EV_P_ W w, int events) |
226 |
root |
1.1 |
{ |
227 |
root |
1.32 |
if (w->pending) |
228 |
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{ |
229 |
root |
1.42 |
pendings [ABSPRI (w)][w->pending - 1].events |= events; |
230 |
root |
1.32 |
return; |
231 |
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} |
232 |
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|
233 |
root |
1.42 |
w->pending = ++pendingcnt [ABSPRI (w)]; |
234 |
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array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
235 |
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pendings [ABSPRI (w)][w->pending - 1].w = w; |
236 |
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pendings [ABSPRI (w)][w->pending - 1].events = events; |
237 |
root |
1.1 |
} |
238 |
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|
239 |
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static void |
240 |
root |
1.51 |
queue_events (EV_P_ W *events, int eventcnt, int type) |
241 |
root |
1.27 |
{ |
242 |
|
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int i; |
243 |
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|
244 |
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for (i = 0; i < eventcnt; ++i) |
245 |
root |
1.51 |
event (EV_A_ events [i], type); |
246 |
root |
1.27 |
} |
247 |
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|
248 |
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static void |
249 |
root |
1.51 |
fd_event (EV_P_ int fd, int events) |
250 |
root |
1.1 |
{ |
251 |
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ANFD *anfd = anfds + fd; |
252 |
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struct ev_io *w; |
253 |
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|
254 |
root |
1.50 |
for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
255 |
root |
1.1 |
{ |
256 |
|
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int ev = w->events & events; |
257 |
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|
258 |
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if (ev) |
259 |
root |
1.51 |
event (EV_A_ (W)w, ev); |
260 |
root |
1.1 |
} |
261 |
|
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} |
262 |
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|
263 |
root |
1.27 |
/*****************************************************************************/ |
264 |
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|
265 |
root |
1.9 |
static void |
266 |
root |
1.51 |
fd_reify (EV_P) |
267 |
root |
1.9 |
{ |
268 |
|
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int i; |
269 |
|
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|
270 |
root |
1.27 |
for (i = 0; i < fdchangecnt; ++i) |
271 |
|
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{ |
272 |
|
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int fd = fdchanges [i]; |
273 |
|
|
ANFD *anfd = anfds + fd; |
274 |
|
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struct ev_io *w; |
275 |
|
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|
276 |
|
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int events = 0; |
277 |
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|
278 |
root |
1.50 |
for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
279 |
root |
1.27 |
events |= w->events; |
280 |
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|
281 |
root |
1.33 |
anfd->reify = 0; |
282 |
root |
1.27 |
|
283 |
|
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if (anfd->events != events) |
284 |
|
|
{ |
285 |
root |
1.51 |
method_modify (EV_A_ fd, anfd->events, events); |
286 |
root |
1.27 |
anfd->events = events; |
287 |
|
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} |
288 |
|
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} |
289 |
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|
290 |
|
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fdchangecnt = 0; |
291 |
|
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} |
292 |
|
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|
293 |
|
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static void |
294 |
root |
1.51 |
fd_change (EV_P_ int fd) |
295 |
root |
1.27 |
{ |
296 |
root |
1.33 |
if (anfds [fd].reify || fdchangecnt < 0) |
297 |
root |
1.27 |
return; |
298 |
|
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|
299 |
root |
1.33 |
anfds [fd].reify = 1; |
300 |
root |
1.27 |
|
301 |
|
|
++fdchangecnt; |
302 |
|
|
array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
303 |
|
|
fdchanges [fdchangecnt - 1] = fd; |
304 |
root |
1.9 |
} |
305 |
|
|
|
306 |
root |
1.41 |
static void |
307 |
root |
1.51 |
fd_kill (EV_P_ int fd) |
308 |
root |
1.41 |
{ |
309 |
|
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struct ev_io *w; |
310 |
|
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|
311 |
root |
1.50 |
while ((w = (struct ev_io *)anfds [fd].head)) |
312 |
root |
1.41 |
{ |
313 |
root |
1.51 |
ev_io_stop (EV_A_ w); |
314 |
|
|
event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
315 |
root |
1.41 |
} |
316 |
|
|
} |
317 |
|
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|
318 |
root |
1.19 |
/* called on EBADF to verify fds */ |
319 |
|
|
static void |
320 |
root |
1.51 |
fd_ebadf (EV_P) |
321 |
root |
1.19 |
{ |
322 |
|
|
int fd; |
323 |
|
|
|
324 |
|
|
for (fd = 0; fd < anfdmax; ++fd) |
325 |
root |
1.27 |
if (anfds [fd].events) |
326 |
root |
1.19 |
if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
327 |
root |
1.51 |
fd_kill (EV_A_ fd); |
328 |
root |
1.41 |
} |
329 |
|
|
|
330 |
|
|
/* called on ENOMEM in select/poll to kill some fds and retry */ |
331 |
|
|
static void |
332 |
root |
1.51 |
fd_enomem (EV_P) |
333 |
root |
1.41 |
{ |
334 |
|
|
int fd = anfdmax; |
335 |
|
|
|
336 |
|
|
while (fd--) |
337 |
|
|
if (anfds [fd].events) |
338 |
|
|
{ |
339 |
|
|
close (fd); |
340 |
root |
1.51 |
fd_kill (EV_A_ fd); |
341 |
root |
1.41 |
return; |
342 |
|
|
} |
343 |
root |
1.19 |
} |
344 |
|
|
|
345 |
root |
1.56 |
/* susually called after fork if method needs to re-arm all fds from scratch */ |
346 |
|
|
static void |
347 |
|
|
fd_rearm_all (EV_P) |
348 |
|
|
{ |
349 |
|
|
int fd; |
350 |
|
|
|
351 |
|
|
/* this should be highly optimised to not do anything but set a flag */ |
352 |
|
|
for (fd = 0; fd < anfdmax; ++fd) |
353 |
|
|
if (anfds [fd].events) |
354 |
|
|
{ |
355 |
|
|
anfds [fd].events = 0; |
356 |
|
|
fd_change (fd); |
357 |
|
|
} |
358 |
|
|
} |
359 |
|
|
|
360 |
root |
1.8 |
/*****************************************************************************/ |
361 |
|
|
|
362 |
root |
1.1 |
static void |
363 |
root |
1.54 |
upheap (WT *heap, int k) |
364 |
root |
1.1 |
{ |
365 |
root |
1.54 |
WT w = heap [k]; |
366 |
root |
1.1 |
|
367 |
root |
1.54 |
while (k && heap [k >> 1]->at > w->at) |
368 |
root |
1.1 |
{ |
369 |
root |
1.54 |
heap [k] = heap [k >> 1]; |
370 |
|
|
heap [k]->active = k + 1; |
371 |
root |
1.1 |
k >>= 1; |
372 |
|
|
} |
373 |
|
|
|
374 |
root |
1.54 |
heap [k] = w; |
375 |
|
|
heap [k]->active = k + 1; |
376 |
root |
1.1 |
|
377 |
|
|
} |
378 |
|
|
|
379 |
|
|
static void |
380 |
root |
1.54 |
downheap (WT *heap, int N, int k) |
381 |
root |
1.1 |
{ |
382 |
root |
1.54 |
WT w = heap [k]; |
383 |
root |
1.1 |
|
384 |
root |
1.4 |
while (k < (N >> 1)) |
385 |
root |
1.1 |
{ |
386 |
|
|
int j = k << 1; |
387 |
|
|
|
388 |
root |
1.54 |
if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
389 |
root |
1.1 |
++j; |
390 |
|
|
|
391 |
root |
1.54 |
if (w->at <= heap [j]->at) |
392 |
root |
1.1 |
break; |
393 |
|
|
|
394 |
root |
1.54 |
heap [k] = heap [j]; |
395 |
|
|
heap [k]->active = k + 1; |
396 |
root |
1.1 |
k = j; |
397 |
|
|
} |
398 |
|
|
|
399 |
root |
1.54 |
heap [k] = w; |
400 |
|
|
heap [k]->active = k + 1; |
401 |
root |
1.1 |
} |
402 |
|
|
|
403 |
root |
1.8 |
/*****************************************************************************/ |
404 |
|
|
|
405 |
root |
1.7 |
typedef struct |
406 |
|
|
{ |
407 |
root |
1.50 |
struct ev_watcher_list *head; |
408 |
root |
1.34 |
sig_atomic_t volatile gotsig; |
409 |
root |
1.7 |
} ANSIG; |
410 |
|
|
|
411 |
|
|
static ANSIG *signals; |
412 |
root |
1.4 |
static int signalmax; |
413 |
root |
1.1 |
|
414 |
root |
1.7 |
static int sigpipe [2]; |
415 |
root |
1.34 |
static sig_atomic_t volatile gotsig; |
416 |
root |
1.7 |
|
417 |
root |
1.1 |
static void |
418 |
root |
1.7 |
signals_init (ANSIG *base, int count) |
419 |
root |
1.1 |
{ |
420 |
|
|
while (count--) |
421 |
root |
1.7 |
{ |
422 |
|
|
base->head = 0; |
423 |
|
|
base->gotsig = 0; |
424 |
root |
1.33 |
|
425 |
root |
1.7 |
++base; |
426 |
|
|
} |
427 |
|
|
} |
428 |
|
|
|
429 |
|
|
static void |
430 |
|
|
sighandler (int signum) |
431 |
|
|
{ |
432 |
|
|
signals [signum - 1].gotsig = 1; |
433 |
|
|
|
434 |
|
|
if (!gotsig) |
435 |
|
|
{ |
436 |
root |
1.48 |
int old_errno = errno; |
437 |
root |
1.7 |
gotsig = 1; |
438 |
root |
1.34 |
write (sigpipe [1], &signum, 1); |
439 |
root |
1.48 |
errno = old_errno; |
440 |
root |
1.7 |
} |
441 |
|
|
} |
442 |
|
|
|
443 |
|
|
static void |
444 |
root |
1.51 |
sigcb (EV_P_ struct ev_io *iow, int revents) |
445 |
root |
1.7 |
{ |
446 |
root |
1.50 |
struct ev_watcher_list *w; |
447 |
root |
1.38 |
int signum; |
448 |
root |
1.7 |
|
449 |
root |
1.34 |
read (sigpipe [0], &revents, 1); |
450 |
root |
1.7 |
gotsig = 0; |
451 |
|
|
|
452 |
root |
1.38 |
for (signum = signalmax; signum--; ) |
453 |
|
|
if (signals [signum].gotsig) |
454 |
root |
1.7 |
{ |
455 |
root |
1.38 |
signals [signum].gotsig = 0; |
456 |
root |
1.7 |
|
457 |
root |
1.38 |
for (w = signals [signum].head; w; w = w->next) |
458 |
root |
1.51 |
event (EV_A_ (W)w, EV_SIGNAL); |
459 |
root |
1.7 |
} |
460 |
|
|
} |
461 |
|
|
|
462 |
|
|
static void |
463 |
root |
1.51 |
siginit (EV_P) |
464 |
root |
1.7 |
{ |
465 |
root |
1.45 |
#ifndef WIN32 |
466 |
root |
1.7 |
fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
467 |
|
|
fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
468 |
|
|
|
469 |
|
|
/* rather than sort out wether we really need nb, set it */ |
470 |
|
|
fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
471 |
|
|
fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
472 |
root |
1.45 |
#endif |
473 |
root |
1.7 |
|
474 |
root |
1.28 |
ev_io_set (&sigev, sigpipe [0], EV_READ); |
475 |
root |
1.54 |
ev_io_start (EV_A_ &sigev); |
476 |
root |
1.52 |
ev_unref (EV_A); /* child watcher should not keep loop alive */ |
477 |
root |
1.1 |
} |
478 |
|
|
|
479 |
root |
1.8 |
/*****************************************************************************/ |
480 |
|
|
|
481 |
root |
1.45 |
#ifndef WIN32 |
482 |
|
|
|
483 |
root |
1.22 |
#ifndef WCONTINUED |
484 |
|
|
# define WCONTINUED 0 |
485 |
|
|
#endif |
486 |
|
|
|
487 |
|
|
static void |
488 |
root |
1.51 |
child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
489 |
root |
1.47 |
{ |
490 |
|
|
struct ev_child *w; |
491 |
|
|
|
492 |
root |
1.50 |
for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
493 |
root |
1.47 |
if (w->pid == pid || !w->pid) |
494 |
|
|
{ |
495 |
|
|
w->priority = sw->priority; /* need to do it *now* */ |
496 |
|
|
w->rpid = pid; |
497 |
|
|
w->rstatus = status; |
498 |
root |
1.51 |
event (EV_A_ (W)w, EV_CHILD); |
499 |
root |
1.47 |
} |
500 |
|
|
} |
501 |
|
|
|
502 |
|
|
static void |
503 |
root |
1.51 |
childcb (EV_P_ struct ev_signal *sw, int revents) |
504 |
root |
1.22 |
{ |
505 |
|
|
int pid, status; |
506 |
|
|
|
507 |
root |
1.47 |
if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
508 |
|
|
{ |
509 |
|
|
/* make sure we are called again until all childs have been reaped */ |
510 |
root |
1.51 |
event (EV_A_ (W)sw, EV_SIGNAL); |
511 |
root |
1.47 |
|
512 |
root |
1.51 |
child_reap (EV_A_ sw, pid, pid, status); |
513 |
|
|
child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
514 |
root |
1.47 |
} |
515 |
root |
1.22 |
} |
516 |
|
|
|
517 |
root |
1.45 |
#endif |
518 |
|
|
|
519 |
root |
1.22 |
/*****************************************************************************/ |
520 |
|
|
|
521 |
root |
1.44 |
#if EV_USE_KQUEUE |
522 |
|
|
# include "ev_kqueue.c" |
523 |
|
|
#endif |
524 |
root |
1.29 |
#if EV_USE_EPOLL |
525 |
root |
1.1 |
# include "ev_epoll.c" |
526 |
|
|
#endif |
527 |
root |
1.51 |
#if EV_USEV_POLL |
528 |
root |
1.41 |
# include "ev_poll.c" |
529 |
|
|
#endif |
530 |
root |
1.29 |
#if EV_USE_SELECT |
531 |
root |
1.1 |
# include "ev_select.c" |
532 |
|
|
#endif |
533 |
|
|
|
534 |
root |
1.24 |
int |
535 |
|
|
ev_version_major (void) |
536 |
|
|
{ |
537 |
|
|
return EV_VERSION_MAJOR; |
538 |
|
|
} |
539 |
|
|
|
540 |
|
|
int |
541 |
|
|
ev_version_minor (void) |
542 |
|
|
{ |
543 |
|
|
return EV_VERSION_MINOR; |
544 |
|
|
} |
545 |
|
|
|
546 |
root |
1.49 |
/* return true if we are running with elevated privileges and should ignore env variables */ |
547 |
root |
1.41 |
static int |
548 |
root |
1.51 |
enable_secure (void) |
549 |
root |
1.41 |
{ |
550 |
root |
1.49 |
#ifdef WIN32 |
551 |
|
|
return 0; |
552 |
|
|
#else |
553 |
root |
1.41 |
return getuid () != geteuid () |
554 |
|
|
|| getgid () != getegid (); |
555 |
root |
1.49 |
#endif |
556 |
root |
1.41 |
} |
557 |
|
|
|
558 |
root |
1.51 |
int |
559 |
|
|
ev_method (EV_P) |
560 |
root |
1.1 |
{ |
561 |
root |
1.51 |
return method; |
562 |
|
|
} |
563 |
|
|
|
564 |
root |
1.56 |
static void |
565 |
root |
1.54 |
loop_init (EV_P_ int methods) |
566 |
root |
1.51 |
{ |
567 |
|
|
if (!method) |
568 |
root |
1.23 |
{ |
569 |
root |
1.29 |
#if EV_USE_MONOTONIC |
570 |
root |
1.23 |
{ |
571 |
|
|
struct timespec ts; |
572 |
|
|
if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
573 |
|
|
have_monotonic = 1; |
574 |
|
|
} |
575 |
root |
1.1 |
#endif |
576 |
|
|
|
577 |
root |
1.51 |
rt_now = ev_time (); |
578 |
|
|
mn_now = get_clock (); |
579 |
|
|
now_floor = mn_now; |
580 |
root |
1.54 |
rtmn_diff = rt_now - mn_now; |
581 |
root |
1.1 |
|
582 |
root |
1.41 |
if (methods == EVMETHOD_AUTO) |
583 |
root |
1.56 |
if (!enable_secure () && getenv ("LIBEV_METHODS")) |
584 |
|
|
methods = atoi (getenv ("LIBEV_METHODS")); |
585 |
root |
1.50 |
else |
586 |
|
|
methods = EVMETHOD_ANY; |
587 |
root |
1.41 |
|
588 |
root |
1.51 |
method = 0; |
589 |
root |
1.44 |
#if EV_USE_KQUEUE |
590 |
root |
1.51 |
if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
591 |
root |
1.44 |
#endif |
592 |
root |
1.29 |
#if EV_USE_EPOLL |
593 |
root |
1.51 |
if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
594 |
root |
1.41 |
#endif |
595 |
root |
1.51 |
#if EV_USEV_POLL |
596 |
|
|
if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
597 |
root |
1.1 |
#endif |
598 |
root |
1.29 |
#if EV_USE_SELECT |
599 |
root |
1.51 |
if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
600 |
root |
1.1 |
#endif |
601 |
root |
1.56 |
} |
602 |
|
|
} |
603 |
|
|
|
604 |
|
|
void |
605 |
|
|
loop_destroy (EV_P) |
606 |
|
|
{ |
607 |
|
|
#if EV_USE_KQUEUE |
608 |
|
|
if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
609 |
|
|
#endif |
610 |
|
|
#if EV_USE_EPOLL |
611 |
|
|
if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
612 |
|
|
#endif |
613 |
|
|
#if EV_USEV_POLL |
614 |
|
|
if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
615 |
|
|
#endif |
616 |
|
|
#if EV_USE_SELECT |
617 |
|
|
if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
618 |
|
|
#endif |
619 |
root |
1.1 |
|
620 |
root |
1.56 |
method = 0; |
621 |
|
|
/*TODO*/ |
622 |
|
|
} |
623 |
root |
1.22 |
|
624 |
root |
1.56 |
void |
625 |
|
|
loop_fork (EV_P) |
626 |
|
|
{ |
627 |
|
|
/*TODO*/ |
628 |
|
|
#if EV_USE_EPOLL |
629 |
|
|
if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
630 |
|
|
#endif |
631 |
|
|
#if EV_USE_KQUEUE |
632 |
|
|
if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
633 |
root |
1.45 |
#endif |
634 |
root |
1.1 |
} |
635 |
|
|
|
636 |
root |
1.55 |
#if EV_MULTIPLICITY |
637 |
root |
1.54 |
struct ev_loop * |
638 |
|
|
ev_loop_new (int methods) |
639 |
|
|
{ |
640 |
|
|
struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); |
641 |
|
|
|
642 |
root |
1.56 |
loop_init (EV_A_ methods); |
643 |
|
|
|
644 |
|
|
if (ev_methods (EV_A)) |
645 |
root |
1.55 |
return loop; |
646 |
root |
1.54 |
|
647 |
root |
1.55 |
return 0; |
648 |
root |
1.54 |
} |
649 |
|
|
|
650 |
|
|
void |
651 |
root |
1.56 |
ev_loop_destroy (EV_P) |
652 |
root |
1.54 |
{ |
653 |
root |
1.56 |
loop_destroy (EV_A); |
654 |
root |
1.54 |
free (loop); |
655 |
|
|
} |
656 |
|
|
|
657 |
root |
1.56 |
void |
658 |
|
|
ev_loop_fork (EV_P) |
659 |
|
|
{ |
660 |
|
|
loop_fork (EV_A); |
661 |
|
|
} |
662 |
|
|
|
663 |
|
|
#endif |
664 |
|
|
|
665 |
|
|
#if EV_MULTIPLICITY |
666 |
|
|
struct ev_loop default_loop_struct; |
667 |
|
|
static struct ev_loop *default_loop; |
668 |
|
|
|
669 |
|
|
struct ev_loop * |
670 |
root |
1.54 |
#else |
671 |
root |
1.56 |
static int default_loop; |
672 |
root |
1.54 |
|
673 |
|
|
int |
674 |
root |
1.56 |
#endif |
675 |
|
|
ev_default_loop (int methods) |
676 |
root |
1.54 |
{ |
677 |
root |
1.56 |
if (sigpipe [0] == sigpipe [1]) |
678 |
|
|
if (pipe (sigpipe)) |
679 |
|
|
return 0; |
680 |
root |
1.54 |
|
681 |
root |
1.56 |
if (!default_loop) |
682 |
|
|
{ |
683 |
|
|
#if EV_MULTIPLICITY |
684 |
|
|
struct ev_loop *loop = default_loop = &default_loop_struct; |
685 |
|
|
#else |
686 |
|
|
default_loop = 1; |
687 |
root |
1.54 |
#endif |
688 |
|
|
|
689 |
root |
1.56 |
loop_init (EV_A_ methods); |
690 |
|
|
|
691 |
|
|
if (ev_method (EV_A)) |
692 |
|
|
{ |
693 |
|
|
ev_watcher_init (&sigev, sigcb); |
694 |
|
|
ev_set_priority (&sigev, EV_MAXPRI); |
695 |
|
|
siginit (EV_A); |
696 |
|
|
|
697 |
|
|
#ifndef WIN32 |
698 |
|
|
ev_signal_init (&childev, childcb, SIGCHLD); |
699 |
|
|
ev_set_priority (&childev, EV_MAXPRI); |
700 |
|
|
ev_signal_start (EV_A_ &childev); |
701 |
|
|
ev_unref (EV_A); /* child watcher should not keep loop alive */ |
702 |
|
|
#endif |
703 |
|
|
} |
704 |
|
|
else |
705 |
|
|
default_loop = 0; |
706 |
|
|
} |
707 |
root |
1.8 |
|
708 |
root |
1.56 |
return default_loop; |
709 |
root |
1.1 |
} |
710 |
|
|
|
711 |
root |
1.24 |
void |
712 |
root |
1.56 |
ev_default_destroy (void) |
713 |
root |
1.1 |
{ |
714 |
root |
1.57 |
#if EV_MULTIPLICITY |
715 |
root |
1.56 |
struct ev_loop *loop = default_loop; |
716 |
root |
1.57 |
#endif |
717 |
root |
1.56 |
|
718 |
|
|
ev_ref (EV_A); /* child watcher */ |
719 |
|
|
ev_signal_stop (EV_A_ &childev); |
720 |
|
|
|
721 |
|
|
ev_ref (EV_A); /* signal watcher */ |
722 |
|
|
ev_io_stop (EV_A_ &sigev); |
723 |
|
|
|
724 |
|
|
close (sigpipe [0]); sigpipe [0] = 0; |
725 |
|
|
close (sigpipe [1]); sigpipe [1] = 0; |
726 |
|
|
|
727 |
|
|
loop_destroy (EV_A); |
728 |
root |
1.1 |
} |
729 |
|
|
|
730 |
root |
1.24 |
void |
731 |
root |
1.56 |
ev_default_fork (EV_P) |
732 |
root |
1.1 |
{ |
733 |
root |
1.56 |
loop_fork (EV_A); |
734 |
root |
1.7 |
|
735 |
root |
1.54 |
ev_io_stop (EV_A_ &sigev); |
736 |
root |
1.7 |
close (sigpipe [0]); |
737 |
|
|
close (sigpipe [1]); |
738 |
|
|
pipe (sigpipe); |
739 |
root |
1.56 |
|
740 |
|
|
ev_ref (EV_A); /* signal watcher */ |
741 |
root |
1.54 |
siginit (EV_A); |
742 |
root |
1.1 |
} |
743 |
|
|
|
744 |
root |
1.8 |
/*****************************************************************************/ |
745 |
|
|
|
746 |
root |
1.1 |
static void |
747 |
root |
1.51 |
call_pending (EV_P) |
748 |
root |
1.1 |
{ |
749 |
root |
1.42 |
int pri; |
750 |
|
|
|
751 |
|
|
for (pri = NUMPRI; pri--; ) |
752 |
|
|
while (pendingcnt [pri]) |
753 |
|
|
{ |
754 |
|
|
ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
755 |
root |
1.1 |
|
756 |
root |
1.42 |
if (p->w) |
757 |
|
|
{ |
758 |
|
|
p->w->pending = 0; |
759 |
root |
1.51 |
p->w->cb (EV_A_ p->w, p->events); |
760 |
root |
1.42 |
} |
761 |
|
|
} |
762 |
root |
1.1 |
} |
763 |
|
|
|
764 |
|
|
static void |
765 |
root |
1.51 |
timers_reify (EV_P) |
766 |
root |
1.1 |
{ |
767 |
root |
1.51 |
while (timercnt && timers [0]->at <= mn_now) |
768 |
root |
1.1 |
{ |
769 |
|
|
struct ev_timer *w = timers [0]; |
770 |
|
|
|
771 |
root |
1.4 |
/* first reschedule or stop timer */ |
772 |
root |
1.1 |
if (w->repeat) |
773 |
|
|
{ |
774 |
root |
1.33 |
assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
775 |
root |
1.51 |
w->at = mn_now + w->repeat; |
776 |
root |
1.12 |
downheap ((WT *)timers, timercnt, 0); |
777 |
|
|
} |
778 |
|
|
else |
779 |
root |
1.51 |
ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
780 |
root |
1.30 |
|
781 |
root |
1.54 |
event (EV_A_ (W)w, EV_TIMEOUT); |
782 |
root |
1.12 |
} |
783 |
|
|
} |
784 |
root |
1.4 |
|
785 |
root |
1.12 |
static void |
786 |
root |
1.51 |
periodics_reify (EV_P) |
787 |
root |
1.12 |
{ |
788 |
root |
1.51 |
while (periodiccnt && periodics [0]->at <= rt_now) |
789 |
root |
1.12 |
{ |
790 |
|
|
struct ev_periodic *w = periodics [0]; |
791 |
root |
1.1 |
|
792 |
root |
1.12 |
/* first reschedule or stop timer */ |
793 |
|
|
if (w->interval) |
794 |
|
|
{ |
795 |
root |
1.51 |
w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; |
796 |
|
|
assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); |
797 |
root |
1.12 |
downheap ((WT *)periodics, periodiccnt, 0); |
798 |
root |
1.1 |
} |
799 |
|
|
else |
800 |
root |
1.51 |
ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
801 |
root |
1.12 |
|
802 |
root |
1.51 |
event (EV_A_ (W)w, EV_PERIODIC); |
803 |
root |
1.12 |
} |
804 |
|
|
} |
805 |
|
|
|
806 |
|
|
static void |
807 |
root |
1.54 |
periodics_reschedule (EV_P) |
808 |
root |
1.12 |
{ |
809 |
|
|
int i; |
810 |
|
|
|
811 |
root |
1.13 |
/* adjust periodics after time jump */ |
812 |
root |
1.12 |
for (i = 0; i < periodiccnt; ++i) |
813 |
|
|
{ |
814 |
|
|
struct ev_periodic *w = periodics [i]; |
815 |
|
|
|
816 |
|
|
if (w->interval) |
817 |
root |
1.4 |
{ |
818 |
root |
1.51 |
ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; |
819 |
root |
1.12 |
|
820 |
|
|
if (fabs (diff) >= 1e-4) |
821 |
|
|
{ |
822 |
root |
1.51 |
ev_periodic_stop (EV_A_ w); |
823 |
|
|
ev_periodic_start (EV_A_ w); |
824 |
root |
1.12 |
|
825 |
|
|
i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
826 |
|
|
} |
827 |
root |
1.4 |
} |
828 |
root |
1.12 |
} |
829 |
root |
1.1 |
} |
830 |
|
|
|
831 |
root |
1.51 |
inline int |
832 |
|
|
time_update_monotonic (EV_P) |
833 |
root |
1.40 |
{ |
834 |
root |
1.51 |
mn_now = get_clock (); |
835 |
root |
1.40 |
|
836 |
root |
1.51 |
if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
837 |
root |
1.40 |
{ |
838 |
root |
1.54 |
rt_now = rtmn_diff + mn_now; |
839 |
root |
1.40 |
return 0; |
840 |
|
|
} |
841 |
|
|
else |
842 |
|
|
{ |
843 |
root |
1.51 |
now_floor = mn_now; |
844 |
|
|
rt_now = ev_time (); |
845 |
root |
1.40 |
return 1; |
846 |
|
|
} |
847 |
|
|
} |
848 |
|
|
|
849 |
root |
1.4 |
static void |
850 |
root |
1.51 |
time_update (EV_P) |
851 |
root |
1.4 |
{ |
852 |
|
|
int i; |
853 |
root |
1.12 |
|
854 |
root |
1.40 |
#if EV_USE_MONOTONIC |
855 |
|
|
if (expect_true (have_monotonic)) |
856 |
|
|
{ |
857 |
root |
1.51 |
if (time_update_monotonic (EV_A)) |
858 |
root |
1.40 |
{ |
859 |
root |
1.54 |
ev_tstamp odiff = rtmn_diff; |
860 |
root |
1.4 |
|
861 |
root |
1.40 |
for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
862 |
|
|
{ |
863 |
root |
1.54 |
rtmn_diff = rt_now - mn_now; |
864 |
root |
1.4 |
|
865 |
root |
1.54 |
if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
866 |
root |
1.40 |
return; /* all is well */ |
867 |
root |
1.4 |
|
868 |
root |
1.51 |
rt_now = ev_time (); |
869 |
|
|
mn_now = get_clock (); |
870 |
|
|
now_floor = mn_now; |
871 |
root |
1.40 |
} |
872 |
root |
1.4 |
|
873 |
root |
1.54 |
periodics_reschedule (EV_A); |
874 |
root |
1.40 |
/* no timer adjustment, as the monotonic clock doesn't jump */ |
875 |
root |
1.54 |
/* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
876 |
root |
1.4 |
} |
877 |
|
|
} |
878 |
|
|
else |
879 |
root |
1.40 |
#endif |
880 |
root |
1.4 |
{ |
881 |
root |
1.51 |
rt_now = ev_time (); |
882 |
root |
1.40 |
|
883 |
root |
1.51 |
if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
884 |
root |
1.13 |
{ |
885 |
root |
1.54 |
periodics_reschedule (EV_A); |
886 |
root |
1.13 |
|
887 |
|
|
/* adjust timers. this is easy, as the offset is the same for all */ |
888 |
|
|
for (i = 0; i < timercnt; ++i) |
889 |
root |
1.54 |
timers [i]->at += rt_now - mn_now; |
890 |
root |
1.13 |
} |
891 |
root |
1.4 |
|
892 |
root |
1.51 |
mn_now = rt_now; |
893 |
root |
1.4 |
} |
894 |
|
|
} |
895 |
|
|
|
896 |
root |
1.51 |
void |
897 |
|
|
ev_ref (EV_P) |
898 |
|
|
{ |
899 |
|
|
++activecnt; |
900 |
|
|
} |
901 |
root |
1.1 |
|
902 |
root |
1.51 |
void |
903 |
|
|
ev_unref (EV_P) |
904 |
|
|
{ |
905 |
|
|
--activecnt; |
906 |
|
|
} |
907 |
|
|
|
908 |
|
|
static int loop_done; |
909 |
|
|
|
910 |
|
|
void |
911 |
|
|
ev_loop (EV_P_ int flags) |
912 |
root |
1.1 |
{ |
913 |
|
|
double block; |
914 |
root |
1.51 |
loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
915 |
root |
1.1 |
|
916 |
root |
1.20 |
do |
917 |
root |
1.9 |
{ |
918 |
root |
1.20 |
/* queue check watchers (and execute them) */ |
919 |
root |
1.40 |
if (expect_false (preparecnt)) |
920 |
root |
1.20 |
{ |
921 |
root |
1.51 |
queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
922 |
|
|
call_pending (EV_A); |
923 |
root |
1.20 |
} |
924 |
root |
1.9 |
|
925 |
root |
1.1 |
/* update fd-related kernel structures */ |
926 |
root |
1.51 |
fd_reify (EV_A); |
927 |
root |
1.1 |
|
928 |
|
|
/* calculate blocking time */ |
929 |
root |
1.12 |
|
930 |
root |
1.21 |
/* we only need this for !monotonic clockor timers, but as we basically |
931 |
|
|
always have timers, we just calculate it always */ |
932 |
root |
1.40 |
#if EV_USE_MONOTONIC |
933 |
|
|
if (expect_true (have_monotonic)) |
934 |
root |
1.51 |
time_update_monotonic (EV_A); |
935 |
root |
1.40 |
else |
936 |
|
|
#endif |
937 |
|
|
{ |
938 |
root |
1.51 |
rt_now = ev_time (); |
939 |
|
|
mn_now = rt_now; |
940 |
root |
1.40 |
} |
941 |
root |
1.12 |
|
942 |
root |
1.9 |
if (flags & EVLOOP_NONBLOCK || idlecnt) |
943 |
root |
1.1 |
block = 0.; |
944 |
|
|
else |
945 |
|
|
{ |
946 |
root |
1.4 |
block = MAX_BLOCKTIME; |
947 |
|
|
|
948 |
root |
1.12 |
if (timercnt) |
949 |
root |
1.4 |
{ |
950 |
root |
1.51 |
ev_tstamp to = timers [0]->at - mn_now + method_fudge; |
951 |
root |
1.4 |
if (block > to) block = to; |
952 |
|
|
} |
953 |
|
|
|
954 |
root |
1.12 |
if (periodiccnt) |
955 |
root |
1.4 |
{ |
956 |
root |
1.51 |
ev_tstamp to = periodics [0]->at - rt_now + method_fudge; |
957 |
root |
1.4 |
if (block > to) block = to; |
958 |
|
|
} |
959 |
|
|
|
960 |
root |
1.1 |
if (block < 0.) block = 0.; |
961 |
|
|
} |
962 |
|
|
|
963 |
root |
1.51 |
method_poll (EV_A_ block); |
964 |
root |
1.1 |
|
965 |
root |
1.51 |
/* update rt_now, do magic */ |
966 |
|
|
time_update (EV_A); |
967 |
root |
1.4 |
|
968 |
root |
1.9 |
/* queue pending timers and reschedule them */ |
969 |
root |
1.51 |
timers_reify (EV_A); /* relative timers called last */ |
970 |
|
|
periodics_reify (EV_A); /* absolute timers called first */ |
971 |
root |
1.1 |
|
972 |
root |
1.9 |
/* queue idle watchers unless io or timers are pending */ |
973 |
|
|
if (!pendingcnt) |
974 |
root |
1.51 |
queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
975 |
root |
1.9 |
|
976 |
root |
1.20 |
/* queue check watchers, to be executed first */ |
977 |
|
|
if (checkcnt) |
978 |
root |
1.51 |
queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
979 |
root |
1.9 |
|
980 |
root |
1.51 |
call_pending (EV_A); |
981 |
root |
1.1 |
} |
982 |
root |
1.51 |
while (activecnt && !loop_done); |
983 |
root |
1.13 |
|
984 |
root |
1.51 |
if (loop_done != 2) |
985 |
|
|
loop_done = 0; |
986 |
|
|
} |
987 |
|
|
|
988 |
|
|
void |
989 |
|
|
ev_unloop (EV_P_ int how) |
990 |
|
|
{ |
991 |
|
|
loop_done = how; |
992 |
root |
1.1 |
} |
993 |
|
|
|
994 |
root |
1.8 |
/*****************************************************************************/ |
995 |
|
|
|
996 |
root |
1.51 |
inline void |
997 |
root |
1.10 |
wlist_add (WL *head, WL elem) |
998 |
root |
1.1 |
{ |
999 |
|
|
elem->next = *head; |
1000 |
|
|
*head = elem; |
1001 |
|
|
} |
1002 |
|
|
|
1003 |
root |
1.51 |
inline void |
1004 |
root |
1.10 |
wlist_del (WL *head, WL elem) |
1005 |
root |
1.1 |
{ |
1006 |
|
|
while (*head) |
1007 |
|
|
{ |
1008 |
|
|
if (*head == elem) |
1009 |
|
|
{ |
1010 |
|
|
*head = elem->next; |
1011 |
|
|
return; |
1012 |
|
|
} |
1013 |
|
|
|
1014 |
|
|
head = &(*head)->next; |
1015 |
|
|
} |
1016 |
|
|
} |
1017 |
|
|
|
1018 |
root |
1.51 |
inline void |
1019 |
|
|
ev_clear_pending (EV_P_ W w) |
1020 |
root |
1.16 |
{ |
1021 |
|
|
if (w->pending) |
1022 |
|
|
{ |
1023 |
root |
1.42 |
pendings [ABSPRI (w)][w->pending - 1].w = 0; |
1024 |
root |
1.16 |
w->pending = 0; |
1025 |
|
|
} |
1026 |
|
|
} |
1027 |
|
|
|
1028 |
root |
1.51 |
inline void |
1029 |
|
|
ev_start (EV_P_ W w, int active) |
1030 |
root |
1.1 |
{ |
1031 |
root |
1.43 |
if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
1032 |
|
|
if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
1033 |
|
|
|
1034 |
root |
1.1 |
w->active = active; |
1035 |
root |
1.51 |
ev_ref (EV_A); |
1036 |
root |
1.1 |
} |
1037 |
|
|
|
1038 |
root |
1.51 |
inline void |
1039 |
|
|
ev_stop (EV_P_ W w) |
1040 |
root |
1.1 |
{ |
1041 |
root |
1.51 |
ev_unref (EV_A); |
1042 |
root |
1.1 |
w->active = 0; |
1043 |
|
|
} |
1044 |
|
|
|
1045 |
root |
1.8 |
/*****************************************************************************/ |
1046 |
|
|
|
1047 |
root |
1.1 |
void |
1048 |
root |
1.51 |
ev_io_start (EV_P_ struct ev_io *w) |
1049 |
root |
1.1 |
{ |
1050 |
root |
1.37 |
int fd = w->fd; |
1051 |
|
|
|
1052 |
root |
1.1 |
if (ev_is_active (w)) |
1053 |
|
|
return; |
1054 |
|
|
|
1055 |
root |
1.33 |
assert (("ev_io_start called with negative fd", fd >= 0)); |
1056 |
|
|
|
1057 |
root |
1.51 |
ev_start (EV_A_ (W)w, 1); |
1058 |
root |
1.1 |
array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1059 |
root |
1.10 |
wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1060 |
root |
1.1 |
|
1061 |
root |
1.51 |
fd_change (EV_A_ fd); |
1062 |
root |
1.1 |
} |
1063 |
|
|
|
1064 |
|
|
void |
1065 |
root |
1.51 |
ev_io_stop (EV_P_ struct ev_io *w) |
1066 |
root |
1.1 |
{ |
1067 |
root |
1.51 |
ev_clear_pending (EV_A_ (W)w); |
1068 |
root |
1.1 |
if (!ev_is_active (w)) |
1069 |
|
|
return; |
1070 |
|
|
|
1071 |
root |
1.10 |
wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1072 |
root |
1.51 |
ev_stop (EV_A_ (W)w); |
1073 |
root |
1.1 |
|
1074 |
root |
1.51 |
fd_change (EV_A_ w->fd); |
1075 |
root |
1.1 |
} |
1076 |
|
|
|
1077 |
|
|
void |
1078 |
root |
1.51 |
ev_timer_start (EV_P_ struct ev_timer *w) |
1079 |
root |
1.1 |
{ |
1080 |
|
|
if (ev_is_active (w)) |
1081 |
|
|
return; |
1082 |
|
|
|
1083 |
root |
1.51 |
w->at += mn_now; |
1084 |
root |
1.12 |
|
1085 |
root |
1.33 |
assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1086 |
root |
1.13 |
|
1087 |
root |
1.51 |
ev_start (EV_A_ (W)w, ++timercnt); |
1088 |
root |
1.12 |
array_needsize (timers, timermax, timercnt, ); |
1089 |
|
|
timers [timercnt - 1] = w; |
1090 |
|
|
upheap ((WT *)timers, timercnt - 1); |
1091 |
|
|
} |
1092 |
|
|
|
1093 |
|
|
void |
1094 |
root |
1.51 |
ev_timer_stop (EV_P_ struct ev_timer *w) |
1095 |
root |
1.12 |
{ |
1096 |
root |
1.51 |
ev_clear_pending (EV_A_ (W)w); |
1097 |
root |
1.12 |
if (!ev_is_active (w)) |
1098 |
|
|
return; |
1099 |
|
|
|
1100 |
|
|
if (w->active < timercnt--) |
1101 |
root |
1.1 |
{ |
1102 |
root |
1.12 |
timers [w->active - 1] = timers [timercnt]; |
1103 |
|
|
downheap ((WT *)timers, timercnt, w->active - 1); |
1104 |
|
|
} |
1105 |
root |
1.4 |
|
1106 |
root |
1.14 |
w->at = w->repeat; |
1107 |
|
|
|
1108 |
root |
1.51 |
ev_stop (EV_A_ (W)w); |
1109 |
root |
1.12 |
} |
1110 |
root |
1.4 |
|
1111 |
root |
1.12 |
void |
1112 |
root |
1.51 |
ev_timer_again (EV_P_ struct ev_timer *w) |
1113 |
root |
1.14 |
{ |
1114 |
|
|
if (ev_is_active (w)) |
1115 |
|
|
{ |
1116 |
|
|
if (w->repeat) |
1117 |
|
|
{ |
1118 |
root |
1.51 |
w->at = mn_now + w->repeat; |
1119 |
root |
1.14 |
downheap ((WT *)timers, timercnt, w->active - 1); |
1120 |
|
|
} |
1121 |
|
|
else |
1122 |
root |
1.51 |
ev_timer_stop (EV_A_ w); |
1123 |
root |
1.14 |
} |
1124 |
|
|
else if (w->repeat) |
1125 |
root |
1.51 |
ev_timer_start (EV_A_ w); |
1126 |
root |
1.14 |
} |
1127 |
|
|
|
1128 |
|
|
void |
1129 |
root |
1.51 |
ev_periodic_start (EV_P_ struct ev_periodic *w) |
1130 |
root |
1.12 |
{ |
1131 |
|
|
if (ev_is_active (w)) |
1132 |
|
|
return; |
1133 |
root |
1.1 |
|
1134 |
root |
1.33 |
assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1135 |
root |
1.13 |
|
1136 |
root |
1.12 |
/* this formula differs from the one in periodic_reify because we do not always round up */ |
1137 |
|
|
if (w->interval) |
1138 |
root |
1.51 |
w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; |
1139 |
root |
1.12 |
|
1140 |
root |
1.51 |
ev_start (EV_A_ (W)w, ++periodiccnt); |
1141 |
root |
1.12 |
array_needsize (periodics, periodicmax, periodiccnt, ); |
1142 |
|
|
periodics [periodiccnt - 1] = w; |
1143 |
|
|
upheap ((WT *)periodics, periodiccnt - 1); |
1144 |
root |
1.1 |
} |
1145 |
|
|
|
1146 |
|
|
void |
1147 |
root |
1.51 |
ev_periodic_stop (EV_P_ struct ev_periodic *w) |
1148 |
root |
1.1 |
{ |
1149 |
root |
1.51 |
ev_clear_pending (EV_A_ (W)w); |
1150 |
root |
1.1 |
if (!ev_is_active (w)) |
1151 |
|
|
return; |
1152 |
|
|
|
1153 |
root |
1.12 |
if (w->active < periodiccnt--) |
1154 |
root |
1.2 |
{ |
1155 |
root |
1.12 |
periodics [w->active - 1] = periodics [periodiccnt]; |
1156 |
|
|
downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1157 |
root |
1.2 |
} |
1158 |
|
|
|
1159 |
root |
1.51 |
ev_stop (EV_A_ (W)w); |
1160 |
root |
1.1 |
} |
1161 |
|
|
|
1162 |
root |
1.28 |
void |
1163 |
root |
1.51 |
ev_idle_start (EV_P_ struct ev_idle *w) |
1164 |
root |
1.9 |
{ |
1165 |
|
|
if (ev_is_active (w)) |
1166 |
|
|
return; |
1167 |
|
|
|
1168 |
root |
1.51 |
ev_start (EV_A_ (W)w, ++idlecnt); |
1169 |
root |
1.9 |
array_needsize (idles, idlemax, idlecnt, ); |
1170 |
|
|
idles [idlecnt - 1] = w; |
1171 |
|
|
} |
1172 |
|
|
|
1173 |
root |
1.28 |
void |
1174 |
root |
1.51 |
ev_idle_stop (EV_P_ struct ev_idle *w) |
1175 |
root |
1.9 |
{ |
1176 |
root |
1.51 |
ev_clear_pending (EV_A_ (W)w); |
1177 |
root |
1.16 |
if (ev_is_active (w)) |
1178 |
|
|
return; |
1179 |
|
|
|
1180 |
root |
1.9 |
idles [w->active - 1] = idles [--idlecnt]; |
1181 |
root |
1.51 |
ev_stop (EV_A_ (W)w); |
1182 |
root |
1.9 |
} |
1183 |
|
|
|
1184 |
root |
1.28 |
void |
1185 |
root |
1.51 |
ev_prepare_start (EV_P_ struct ev_prepare *w) |
1186 |
root |
1.20 |
{ |
1187 |
|
|
if (ev_is_active (w)) |
1188 |
|
|
return; |
1189 |
|
|
|
1190 |
root |
1.51 |
ev_start (EV_A_ (W)w, ++preparecnt); |
1191 |
root |
1.20 |
array_needsize (prepares, preparemax, preparecnt, ); |
1192 |
|
|
prepares [preparecnt - 1] = w; |
1193 |
|
|
} |
1194 |
|
|
|
1195 |
root |
1.28 |
void |
1196 |
root |
1.51 |
ev_prepare_stop (EV_P_ struct ev_prepare *w) |
1197 |
root |
1.20 |
{ |
1198 |
root |
1.51 |
ev_clear_pending (EV_A_ (W)w); |
1199 |
root |
1.20 |
if (ev_is_active (w)) |
1200 |
|
|
return; |
1201 |
|
|
|
1202 |
|
|
prepares [w->active - 1] = prepares [--preparecnt]; |
1203 |
root |
1.51 |
ev_stop (EV_A_ (W)w); |
1204 |
root |
1.20 |
} |
1205 |
|
|
|
1206 |
root |
1.28 |
void |
1207 |
root |
1.51 |
ev_check_start (EV_P_ struct ev_check *w) |
1208 |
root |
1.9 |
{ |
1209 |
|
|
if (ev_is_active (w)) |
1210 |
|
|
return; |
1211 |
|
|
|
1212 |
root |
1.51 |
ev_start (EV_A_ (W)w, ++checkcnt); |
1213 |
root |
1.9 |
array_needsize (checks, checkmax, checkcnt, ); |
1214 |
|
|
checks [checkcnt - 1] = w; |
1215 |
|
|
} |
1216 |
|
|
|
1217 |
root |
1.28 |
void |
1218 |
root |
1.51 |
ev_check_stop (EV_P_ struct ev_check *w) |
1219 |
root |
1.9 |
{ |
1220 |
root |
1.51 |
ev_clear_pending (EV_A_ (W)w); |
1221 |
root |
1.16 |
if (ev_is_active (w)) |
1222 |
|
|
return; |
1223 |
|
|
|
1224 |
root |
1.9 |
checks [w->active - 1] = checks [--checkcnt]; |
1225 |
root |
1.51 |
ev_stop (EV_A_ (W)w); |
1226 |
root |
1.9 |
} |
1227 |
|
|
|
1228 |
root |
1.56 |
#ifndef SA_RESTART |
1229 |
|
|
# define SA_RESTART 0 |
1230 |
|
|
#endif |
1231 |
|
|
|
1232 |
|
|
void |
1233 |
|
|
ev_signal_start (EV_P_ struct ev_signal *w) |
1234 |
|
|
{ |
1235 |
|
|
#if EV_MULTIPLICITY |
1236 |
|
|
assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
1237 |
|
|
#endif |
1238 |
|
|
if (ev_is_active (w)) |
1239 |
|
|
return; |
1240 |
|
|
|
1241 |
|
|
assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1242 |
|
|
|
1243 |
|
|
ev_start (EV_A_ (W)w, 1); |
1244 |
|
|
array_needsize (signals, signalmax, w->signum, signals_init); |
1245 |
|
|
wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1246 |
|
|
|
1247 |
|
|
if (!w->next) |
1248 |
|
|
{ |
1249 |
|
|
struct sigaction sa; |
1250 |
|
|
sa.sa_handler = sighandler; |
1251 |
|
|
sigfillset (&sa.sa_mask); |
1252 |
|
|
sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1253 |
|
|
sigaction (w->signum, &sa, 0); |
1254 |
|
|
} |
1255 |
|
|
} |
1256 |
|
|
|
1257 |
|
|
void |
1258 |
|
|
ev_signal_stop (EV_P_ struct ev_signal *w) |
1259 |
|
|
{ |
1260 |
|
|
ev_clear_pending (EV_A_ (W)w); |
1261 |
|
|
if (!ev_is_active (w)) |
1262 |
|
|
return; |
1263 |
|
|
|
1264 |
|
|
wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1265 |
|
|
ev_stop (EV_A_ (W)w); |
1266 |
|
|
|
1267 |
|
|
if (!signals [w->signum - 1].head) |
1268 |
|
|
signal (w->signum, SIG_DFL); |
1269 |
|
|
} |
1270 |
|
|
|
1271 |
root |
1.28 |
void |
1272 |
root |
1.51 |
ev_child_start (EV_P_ struct ev_child *w) |
1273 |
root |
1.22 |
{ |
1274 |
root |
1.56 |
#if EV_MULTIPLICITY |
1275 |
|
|
assert (("child watchers are only supported in the default loop", loop == default_loop)); |
1276 |
|
|
#endif |
1277 |
root |
1.22 |
if (ev_is_active (w)) |
1278 |
|
|
return; |
1279 |
|
|
|
1280 |
root |
1.51 |
ev_start (EV_A_ (W)w, 1); |
1281 |
root |
1.22 |
wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1282 |
|
|
} |
1283 |
|
|
|
1284 |
root |
1.28 |
void |
1285 |
root |
1.51 |
ev_child_stop (EV_P_ struct ev_child *w) |
1286 |
root |
1.22 |
{ |
1287 |
root |
1.51 |
ev_clear_pending (EV_A_ (W)w); |
1288 |
root |
1.22 |
if (ev_is_active (w)) |
1289 |
|
|
return; |
1290 |
|
|
|
1291 |
|
|
wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1292 |
root |
1.51 |
ev_stop (EV_A_ (W)w); |
1293 |
root |
1.22 |
} |
1294 |
|
|
|
1295 |
root |
1.1 |
/*****************************************************************************/ |
1296 |
root |
1.10 |
|
1297 |
root |
1.16 |
struct ev_once |
1298 |
|
|
{ |
1299 |
|
|
struct ev_io io; |
1300 |
|
|
struct ev_timer to; |
1301 |
|
|
void (*cb)(int revents, void *arg); |
1302 |
|
|
void *arg; |
1303 |
|
|
}; |
1304 |
|
|
|
1305 |
|
|
static void |
1306 |
root |
1.51 |
once_cb (EV_P_ struct ev_once *once, int revents) |
1307 |
root |
1.16 |
{ |
1308 |
|
|
void (*cb)(int revents, void *arg) = once->cb; |
1309 |
|
|
void *arg = once->arg; |
1310 |
|
|
|
1311 |
root |
1.51 |
ev_io_stop (EV_A_ &once->io); |
1312 |
|
|
ev_timer_stop (EV_A_ &once->to); |
1313 |
root |
1.16 |
free (once); |
1314 |
|
|
|
1315 |
|
|
cb (revents, arg); |
1316 |
|
|
} |
1317 |
|
|
|
1318 |
|
|
static void |
1319 |
root |
1.51 |
once_cb_io (EV_P_ struct ev_io *w, int revents) |
1320 |
root |
1.16 |
{ |
1321 |
root |
1.51 |
once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1322 |
root |
1.16 |
} |
1323 |
|
|
|
1324 |
|
|
static void |
1325 |
root |
1.51 |
once_cb_to (EV_P_ struct ev_timer *w, int revents) |
1326 |
root |
1.16 |
{ |
1327 |
root |
1.51 |
once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1328 |
root |
1.16 |
} |
1329 |
|
|
|
1330 |
|
|
void |
1331 |
root |
1.51 |
ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1332 |
root |
1.16 |
{ |
1333 |
|
|
struct ev_once *once = malloc (sizeof (struct ev_once)); |
1334 |
|
|
|
1335 |
|
|
if (!once) |
1336 |
root |
1.29 |
cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1337 |
root |
1.16 |
else |
1338 |
|
|
{ |
1339 |
|
|
once->cb = cb; |
1340 |
|
|
once->arg = arg; |
1341 |
|
|
|
1342 |
root |
1.28 |
ev_watcher_init (&once->io, once_cb_io); |
1343 |
root |
1.16 |
if (fd >= 0) |
1344 |
|
|
{ |
1345 |
root |
1.28 |
ev_io_set (&once->io, fd, events); |
1346 |
root |
1.51 |
ev_io_start (EV_A_ &once->io); |
1347 |
root |
1.16 |
} |
1348 |
|
|
|
1349 |
root |
1.28 |
ev_watcher_init (&once->to, once_cb_to); |
1350 |
root |
1.16 |
if (timeout >= 0.) |
1351 |
|
|
{ |
1352 |
root |
1.28 |
ev_timer_set (&once->to, timeout, 0.); |
1353 |
root |
1.51 |
ev_timer_start (EV_A_ &once->to); |
1354 |
root |
1.16 |
} |
1355 |
|
|
} |
1356 |
|
|
} |
1357 |
|
|
|