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root |
1.17 |
/* |
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root |
1.36 |
* libev event processing core, watcher management |
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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 |
1.29 |
#if EV_USE_CONFIG_H |
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# include "config.h" |
33 |
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#endif |
34 |
root |
1.17 |
|
35 |
root |
1.1 |
#include <math.h> |
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#include <stdlib.h> |
37 |
root |
1.7 |
#include <unistd.h> |
38 |
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#include <fcntl.h> |
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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> |
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root |
1.1 |
#include <errno.h> |
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root |
1.22 |
#include <sys/types.h> |
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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> |
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#include <time.h> |
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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 |
1.41 |
#ifndef EV_USE_POLL |
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# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
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#endif |
66 |
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67 |
root |
1.29 |
#ifndef EV_USE_EPOLL |
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# define EV_USE_EPOLL 0 |
69 |
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1.10 |
#endif |
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71 |
root |
1.44 |
#ifndef EV_USE_KQUEUE |
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# define EV_USE_KQUEUE 0 |
73 |
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#endif |
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75 |
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1.40 |
#ifndef EV_USE_REALTIME |
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# define EV_USE_REALTIME 1 |
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#endif |
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79 |
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/**/ |
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81 |
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#ifndef CLOCK_MONOTONIC |
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# undef EV_USE_MONOTONIC |
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# define EV_USE_MONOTONIC 0 |
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#endif |
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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 |
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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 */ |
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1.1 |
|
98 |
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#include "ev.h" |
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1.40 |
#if __GNUC__ >= 3 |
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# define expect(expr,value) __builtin_expect ((expr),(value)) |
102 |
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# define inline inline |
103 |
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#else |
104 |
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# define expect(expr,value) (expr) |
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# define inline static |
106 |
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#endif |
107 |
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108 |
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#define expect_false(expr) expect ((expr) != 0, 0) |
109 |
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#define expect_true(expr) expect ((expr) != 0, 1) |
110 |
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111 |
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1.42 |
#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
112 |
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#define ABSPRI(w) ((w)->priority - EV_MINPRI) |
113 |
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114 |
root |
1.10 |
typedef struct ev_watcher *W; |
115 |
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typedef struct ev_watcher_list *WL; |
116 |
root |
1.12 |
typedef struct ev_watcher_time *WT; |
117 |
root |
1.10 |
|
118 |
root |
1.40 |
static ev_tstamp now_floor, now, diff; /* monotonic clock */ |
119 |
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1.1 |
ev_tstamp ev_now; |
120 |
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int ev_method; |
121 |
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122 |
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static int have_monotonic; /* runtime */ |
123 |
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124 |
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static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
125 |
root |
1.5 |
static void (*method_modify)(int fd, int oev, int nev); |
126 |
root |
1.1 |
static void (*method_poll)(ev_tstamp timeout); |
127 |
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128 |
root |
1.8 |
/*****************************************************************************/ |
129 |
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130 |
root |
1.1 |
ev_tstamp |
131 |
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ev_time (void) |
132 |
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{ |
133 |
root |
1.29 |
#if EV_USE_REALTIME |
134 |
root |
1.1 |
struct timespec ts; |
135 |
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clock_gettime (CLOCK_REALTIME, &ts); |
136 |
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return ts.tv_sec + ts.tv_nsec * 1e-9; |
137 |
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#else |
138 |
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struct timeval tv; |
139 |
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gettimeofday (&tv, 0); |
140 |
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return tv.tv_sec + tv.tv_usec * 1e-6; |
141 |
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#endif |
142 |
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} |
143 |
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144 |
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static ev_tstamp |
145 |
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get_clock (void) |
146 |
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{ |
147 |
root |
1.29 |
#if EV_USE_MONOTONIC |
148 |
root |
1.40 |
if (expect_true (have_monotonic)) |
149 |
root |
1.1 |
{ |
150 |
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struct timespec ts; |
151 |
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clock_gettime (CLOCK_MONOTONIC, &ts); |
152 |
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return ts.tv_sec + ts.tv_nsec * 1e-9; |
153 |
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} |
154 |
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#endif |
155 |
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156 |
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return ev_time (); |
157 |
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} |
158 |
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159 |
root |
1.30 |
#define array_roundsize(base,n) ((n) | 4 & ~3) |
160 |
root |
1.29 |
|
161 |
root |
1.1 |
#define array_needsize(base,cur,cnt,init) \ |
162 |
root |
1.40 |
if (expect_false ((cnt) > cur)) \ |
163 |
root |
1.1 |
{ \ |
164 |
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1.23 |
int newcnt = cur; \ |
165 |
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do \ |
166 |
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{ \ |
167 |
root |
1.30 |
newcnt = array_roundsize (base, newcnt << 1); \ |
168 |
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1.23 |
} \ |
169 |
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while ((cnt) > newcnt); \ |
170 |
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\ |
171 |
root |
1.1 |
base = realloc (base, sizeof (*base) * (newcnt)); \ |
172 |
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init (base + cur, newcnt - cur); \ |
173 |
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cur = newcnt; \ |
174 |
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} |
175 |
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176 |
root |
1.8 |
/*****************************************************************************/ |
177 |
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178 |
root |
1.1 |
typedef struct |
179 |
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{ |
180 |
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struct ev_io *head; |
181 |
root |
1.33 |
unsigned char events; |
182 |
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unsigned char reify; |
183 |
root |
1.1 |
} ANFD; |
184 |
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185 |
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static ANFD *anfds; |
186 |
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static int anfdmax; |
187 |
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188 |
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static void |
189 |
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anfds_init (ANFD *base, int count) |
190 |
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{ |
191 |
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while (count--) |
192 |
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{ |
193 |
root |
1.27 |
base->head = 0; |
194 |
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base->events = EV_NONE; |
195 |
root |
1.33 |
base->reify = 0; |
196 |
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197 |
root |
1.1 |
++base; |
198 |
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} |
199 |
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} |
200 |
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201 |
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typedef struct |
202 |
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{ |
203 |
root |
1.10 |
W w; |
204 |
root |
1.1 |
int events; |
205 |
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} ANPENDING; |
206 |
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207 |
root |
1.42 |
static ANPENDING *pendings [NUMPRI]; |
208 |
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static int pendingmax [NUMPRI], pendingcnt [NUMPRI]; |
209 |
root |
1.1 |
|
210 |
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static void |
211 |
root |
1.10 |
event (W w, int events) |
212 |
root |
1.1 |
{ |
213 |
root |
1.32 |
if (w->pending) |
214 |
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{ |
215 |
root |
1.42 |
pendings [ABSPRI (w)][w->pending - 1].events |= events; |
216 |
root |
1.32 |
return; |
217 |
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} |
218 |
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219 |
root |
1.42 |
w->pending = ++pendingcnt [ABSPRI (w)]; |
220 |
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array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
221 |
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pendings [ABSPRI (w)][w->pending - 1].w = w; |
222 |
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pendings [ABSPRI (w)][w->pending - 1].events = events; |
223 |
root |
1.1 |
} |
224 |
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225 |
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static void |
226 |
root |
1.27 |
queue_events (W *events, int eventcnt, int type) |
227 |
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{ |
228 |
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int i; |
229 |
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230 |
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for (i = 0; i < eventcnt; ++i) |
231 |
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event (events [i], type); |
232 |
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} |
233 |
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234 |
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static void |
235 |
root |
1.1 |
fd_event (int fd, int events) |
236 |
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{ |
237 |
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ANFD *anfd = anfds + fd; |
238 |
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struct ev_io *w; |
239 |
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240 |
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for (w = anfd->head; w; w = w->next) |
241 |
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{ |
242 |
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int ev = w->events & events; |
243 |
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244 |
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if (ev) |
245 |
root |
1.10 |
event ((W)w, ev); |
246 |
root |
1.1 |
} |
247 |
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} |
248 |
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249 |
root |
1.27 |
/*****************************************************************************/ |
250 |
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251 |
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static int *fdchanges; |
252 |
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static int fdchangemax, fdchangecnt; |
253 |
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254 |
root |
1.9 |
static void |
255 |
root |
1.27 |
fd_reify (void) |
256 |
root |
1.9 |
{ |
257 |
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int i; |
258 |
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259 |
root |
1.27 |
for (i = 0; i < fdchangecnt; ++i) |
260 |
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{ |
261 |
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int fd = fdchanges [i]; |
262 |
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ANFD *anfd = anfds + fd; |
263 |
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struct ev_io *w; |
264 |
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265 |
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int events = 0; |
266 |
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267 |
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for (w = anfd->head; w; w = w->next) |
268 |
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events |= w->events; |
269 |
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270 |
root |
1.33 |
anfd->reify = 0; |
271 |
root |
1.27 |
|
272 |
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if (anfd->events != events) |
273 |
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{ |
274 |
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method_modify (fd, anfd->events, events); |
275 |
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anfd->events = events; |
276 |
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} |
277 |
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} |
278 |
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279 |
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fdchangecnt = 0; |
280 |
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} |
281 |
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282 |
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static void |
283 |
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fd_change (int fd) |
284 |
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{ |
285 |
root |
1.33 |
if (anfds [fd].reify || fdchangecnt < 0) |
286 |
root |
1.27 |
return; |
287 |
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|
288 |
root |
1.33 |
anfds [fd].reify = 1; |
289 |
root |
1.27 |
|
290 |
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++fdchangecnt; |
291 |
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array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
292 |
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fdchanges [fdchangecnt - 1] = fd; |
293 |
root |
1.9 |
} |
294 |
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295 |
root |
1.41 |
static void |
296 |
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fd_kill (int fd) |
297 |
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{ |
298 |
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struct ev_io *w; |
299 |
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|
300 |
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printf ("killing fd %d\n", fd);//D |
301 |
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while ((w = anfds [fd].head)) |
302 |
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{ |
303 |
|
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ev_io_stop (w); |
304 |
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event ((W)w, EV_ERROR | EV_READ | EV_WRITE); |
305 |
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} |
306 |
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} |
307 |
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|
308 |
root |
1.19 |
/* called on EBADF to verify fds */ |
309 |
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static void |
310 |
root |
1.41 |
fd_ebadf (void) |
311 |
root |
1.19 |
{ |
312 |
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int fd; |
313 |
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|
314 |
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for (fd = 0; fd < anfdmax; ++fd) |
315 |
root |
1.27 |
if (anfds [fd].events) |
316 |
root |
1.19 |
if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
317 |
root |
1.41 |
fd_kill (fd); |
318 |
|
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} |
319 |
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|
320 |
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/* called on ENOMEM in select/poll to kill some fds and retry */ |
321 |
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static void |
322 |
|
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fd_enomem (void) |
323 |
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{ |
324 |
|
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int fd = anfdmax; |
325 |
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|
326 |
|
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while (fd--) |
327 |
|
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if (anfds [fd].events) |
328 |
|
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{ |
329 |
|
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close (fd); |
330 |
|
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fd_kill (fd); |
331 |
|
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return; |
332 |
|
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} |
333 |
root |
1.19 |
} |
334 |
|
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|
335 |
root |
1.8 |
/*****************************************************************************/ |
336 |
|
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|
337 |
root |
1.12 |
static struct ev_timer **timers; |
338 |
|
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static int timermax, timercnt; |
339 |
root |
1.4 |
|
340 |
root |
1.12 |
static struct ev_periodic **periodics; |
341 |
|
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static int periodicmax, periodiccnt; |
342 |
root |
1.1 |
|
343 |
|
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static void |
344 |
root |
1.12 |
upheap (WT *timers, int k) |
345 |
root |
1.1 |
{ |
346 |
root |
1.12 |
WT w = timers [k]; |
347 |
root |
1.1 |
|
348 |
|
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while (k && timers [k >> 1]->at > w->at) |
349 |
|
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{ |
350 |
|
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timers [k] = timers [k >> 1]; |
351 |
|
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timers [k]->active = k + 1; |
352 |
|
|
k >>= 1; |
353 |
|
|
} |
354 |
|
|
|
355 |
|
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timers [k] = w; |
356 |
|
|
timers [k]->active = k + 1; |
357 |
|
|
|
358 |
|
|
} |
359 |
|
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|
360 |
|
|
static void |
361 |
root |
1.12 |
downheap (WT *timers, int N, int k) |
362 |
root |
1.1 |
{ |
363 |
root |
1.12 |
WT w = timers [k]; |
364 |
root |
1.1 |
|
365 |
root |
1.4 |
while (k < (N >> 1)) |
366 |
root |
1.1 |
{ |
367 |
|
|
int j = k << 1; |
368 |
|
|
|
369 |
root |
1.4 |
if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
370 |
root |
1.1 |
++j; |
371 |
|
|
|
372 |
|
|
if (w->at <= timers [j]->at) |
373 |
|
|
break; |
374 |
|
|
|
375 |
|
|
timers [k] = timers [j]; |
376 |
root |
1.2 |
timers [k]->active = k + 1; |
377 |
root |
1.1 |
k = j; |
378 |
|
|
} |
379 |
|
|
|
380 |
|
|
timers [k] = w; |
381 |
|
|
timers [k]->active = k + 1; |
382 |
|
|
} |
383 |
|
|
|
384 |
root |
1.8 |
/*****************************************************************************/ |
385 |
|
|
|
386 |
root |
1.7 |
typedef struct |
387 |
|
|
{ |
388 |
|
|
struct ev_signal *head; |
389 |
root |
1.34 |
sig_atomic_t volatile gotsig; |
390 |
root |
1.7 |
} ANSIG; |
391 |
|
|
|
392 |
|
|
static ANSIG *signals; |
393 |
root |
1.4 |
static int signalmax; |
394 |
root |
1.1 |
|
395 |
root |
1.7 |
static int sigpipe [2]; |
396 |
root |
1.34 |
static sig_atomic_t volatile gotsig; |
397 |
root |
1.7 |
static struct ev_io sigev; |
398 |
|
|
|
399 |
root |
1.1 |
static void |
400 |
root |
1.7 |
signals_init (ANSIG *base, int count) |
401 |
root |
1.1 |
{ |
402 |
|
|
while (count--) |
403 |
root |
1.7 |
{ |
404 |
|
|
base->head = 0; |
405 |
|
|
base->gotsig = 0; |
406 |
root |
1.33 |
|
407 |
root |
1.7 |
++base; |
408 |
|
|
} |
409 |
|
|
} |
410 |
|
|
|
411 |
|
|
static void |
412 |
|
|
sighandler (int signum) |
413 |
|
|
{ |
414 |
|
|
signals [signum - 1].gotsig = 1; |
415 |
|
|
|
416 |
|
|
if (!gotsig) |
417 |
|
|
{ |
418 |
|
|
gotsig = 1; |
419 |
root |
1.34 |
write (sigpipe [1], &signum, 1); |
420 |
root |
1.7 |
} |
421 |
|
|
} |
422 |
|
|
|
423 |
|
|
static void |
424 |
|
|
sigcb (struct ev_io *iow, int revents) |
425 |
|
|
{ |
426 |
|
|
struct ev_signal *w; |
427 |
root |
1.38 |
int signum; |
428 |
root |
1.7 |
|
429 |
root |
1.34 |
read (sigpipe [0], &revents, 1); |
430 |
root |
1.7 |
gotsig = 0; |
431 |
|
|
|
432 |
root |
1.38 |
for (signum = signalmax; signum--; ) |
433 |
|
|
if (signals [signum].gotsig) |
434 |
root |
1.7 |
{ |
435 |
root |
1.38 |
signals [signum].gotsig = 0; |
436 |
root |
1.7 |
|
437 |
root |
1.38 |
for (w = signals [signum].head; w; w = w->next) |
438 |
root |
1.10 |
event ((W)w, EV_SIGNAL); |
439 |
root |
1.7 |
} |
440 |
|
|
} |
441 |
|
|
|
442 |
|
|
static void |
443 |
|
|
siginit (void) |
444 |
|
|
{ |
445 |
root |
1.45 |
#ifndef WIN32 |
446 |
root |
1.7 |
fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
447 |
|
|
fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
448 |
|
|
|
449 |
|
|
/* rather than sort out wether we really need nb, set it */ |
450 |
|
|
fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
451 |
|
|
fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
452 |
root |
1.45 |
#endif |
453 |
root |
1.7 |
|
454 |
root |
1.28 |
ev_io_set (&sigev, sigpipe [0], EV_READ); |
455 |
|
|
ev_io_start (&sigev); |
456 |
root |
1.1 |
} |
457 |
|
|
|
458 |
root |
1.8 |
/*****************************************************************************/ |
459 |
|
|
|
460 |
root |
1.9 |
static struct ev_idle **idles; |
461 |
|
|
static int idlemax, idlecnt; |
462 |
|
|
|
463 |
root |
1.20 |
static struct ev_prepare **prepares; |
464 |
|
|
static int preparemax, preparecnt; |
465 |
|
|
|
466 |
root |
1.9 |
static struct ev_check **checks; |
467 |
|
|
static int checkmax, checkcnt; |
468 |
|
|
|
469 |
|
|
/*****************************************************************************/ |
470 |
|
|
|
471 |
root |
1.22 |
static struct ev_child *childs [PID_HASHSIZE]; |
472 |
|
|
static struct ev_signal childev; |
473 |
|
|
|
474 |
root |
1.45 |
#ifndef WIN32 |
475 |
|
|
|
476 |
root |
1.22 |
#ifndef WCONTINUED |
477 |
|
|
# define WCONTINUED 0 |
478 |
|
|
#endif |
479 |
|
|
|
480 |
|
|
static void |
481 |
|
|
childcb (struct ev_signal *sw, int revents) |
482 |
|
|
{ |
483 |
|
|
struct ev_child *w; |
484 |
|
|
int pid, status; |
485 |
|
|
|
486 |
|
|
while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
487 |
|
|
for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
488 |
root |
1.39 |
if (w->pid == pid || !w->pid) |
489 |
root |
1.22 |
{ |
490 |
root |
1.46 |
w->rpid = pid; |
491 |
|
|
w->rstatus = status; |
492 |
root |
1.22 |
event ((W)w, EV_CHILD); |
493 |
|
|
} |
494 |
|
|
} |
495 |
|
|
|
496 |
root |
1.45 |
#endif |
497 |
|
|
|
498 |
root |
1.22 |
/*****************************************************************************/ |
499 |
|
|
|
500 |
root |
1.44 |
#if EV_USE_KQUEUE |
501 |
|
|
# include "ev_kqueue.c" |
502 |
|
|
#endif |
503 |
root |
1.29 |
#if EV_USE_EPOLL |
504 |
root |
1.1 |
# include "ev_epoll.c" |
505 |
|
|
#endif |
506 |
root |
1.41 |
#if EV_USE_POLL |
507 |
|
|
# include "ev_poll.c" |
508 |
|
|
#endif |
509 |
root |
1.29 |
#if EV_USE_SELECT |
510 |
root |
1.1 |
# include "ev_select.c" |
511 |
|
|
#endif |
512 |
|
|
|
513 |
root |
1.24 |
int |
514 |
|
|
ev_version_major (void) |
515 |
|
|
{ |
516 |
|
|
return EV_VERSION_MAJOR; |
517 |
|
|
} |
518 |
|
|
|
519 |
|
|
int |
520 |
|
|
ev_version_minor (void) |
521 |
|
|
{ |
522 |
|
|
return EV_VERSION_MINOR; |
523 |
|
|
} |
524 |
|
|
|
525 |
root |
1.41 |
/* return true if we are running with elevated privileges and ignore env variables */ |
526 |
|
|
static int |
527 |
|
|
enable_secure () |
528 |
|
|
{ |
529 |
|
|
return getuid () != geteuid () |
530 |
|
|
|| getgid () != getegid (); |
531 |
|
|
} |
532 |
|
|
|
533 |
|
|
int ev_init (int methods) |
534 |
root |
1.1 |
{ |
535 |
root |
1.23 |
if (!ev_method) |
536 |
|
|
{ |
537 |
root |
1.29 |
#if EV_USE_MONOTONIC |
538 |
root |
1.23 |
{ |
539 |
|
|
struct timespec ts; |
540 |
|
|
if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
541 |
|
|
have_monotonic = 1; |
542 |
|
|
} |
543 |
root |
1.1 |
#endif |
544 |
|
|
|
545 |
root |
1.40 |
ev_now = ev_time (); |
546 |
|
|
now = get_clock (); |
547 |
|
|
now_floor = now; |
548 |
|
|
diff = ev_now - now; |
549 |
root |
1.1 |
|
550 |
root |
1.23 |
if (pipe (sigpipe)) |
551 |
|
|
return 0; |
552 |
root |
1.7 |
|
553 |
root |
1.41 |
if (methods == EVMETHOD_AUTO) |
554 |
|
|
if (!enable_secure () && getenv ("LIBEV_METHODS")) |
555 |
|
|
methods = atoi (getenv ("LIBEV_METHODS")); |
556 |
|
|
else |
557 |
|
|
methods = EVMETHOD_ANY; |
558 |
|
|
|
559 |
|
|
ev_method = 0; |
560 |
root |
1.44 |
#if EV_USE_KQUEUE |
561 |
|
|
if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods); |
562 |
|
|
#endif |
563 |
root |
1.29 |
#if EV_USE_EPOLL |
564 |
root |
1.41 |
if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods); |
565 |
|
|
#endif |
566 |
|
|
#if EV_USE_POLL |
567 |
|
|
if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods); |
568 |
root |
1.1 |
#endif |
569 |
root |
1.29 |
#if EV_USE_SELECT |
570 |
root |
1.41 |
if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods); |
571 |
root |
1.1 |
#endif |
572 |
|
|
|
573 |
root |
1.23 |
if (ev_method) |
574 |
|
|
{ |
575 |
root |
1.28 |
ev_watcher_init (&sigev, sigcb); |
576 |
root |
1.23 |
siginit (); |
577 |
root |
1.22 |
|
578 |
root |
1.45 |
#ifndef WIN32 |
579 |
root |
1.28 |
ev_signal_init (&childev, childcb, SIGCHLD); |
580 |
|
|
ev_signal_start (&childev); |
581 |
root |
1.45 |
#endif |
582 |
root |
1.23 |
} |
583 |
root |
1.7 |
} |
584 |
|
|
|
585 |
root |
1.1 |
return ev_method; |
586 |
|
|
} |
587 |
|
|
|
588 |
root |
1.8 |
/*****************************************************************************/ |
589 |
|
|
|
590 |
root |
1.24 |
void |
591 |
root |
1.35 |
ev_fork_prepare (void) |
592 |
root |
1.1 |
{ |
593 |
root |
1.11 |
/* nop */ |
594 |
root |
1.1 |
} |
595 |
|
|
|
596 |
root |
1.24 |
void |
597 |
root |
1.35 |
ev_fork_parent (void) |
598 |
root |
1.1 |
{ |
599 |
root |
1.11 |
/* nop */ |
600 |
root |
1.1 |
} |
601 |
|
|
|
602 |
root |
1.24 |
void |
603 |
root |
1.35 |
ev_fork_child (void) |
604 |
root |
1.1 |
{ |
605 |
root |
1.29 |
#if EV_USE_EPOLL |
606 |
root |
1.5 |
if (ev_method == EVMETHOD_EPOLL) |
607 |
|
|
epoll_postfork_child (); |
608 |
root |
1.1 |
#endif |
609 |
root |
1.7 |
|
610 |
root |
1.28 |
ev_io_stop (&sigev); |
611 |
root |
1.7 |
close (sigpipe [0]); |
612 |
|
|
close (sigpipe [1]); |
613 |
|
|
pipe (sigpipe); |
614 |
|
|
siginit (); |
615 |
root |
1.1 |
} |
616 |
|
|
|
617 |
root |
1.8 |
/*****************************************************************************/ |
618 |
|
|
|
619 |
root |
1.1 |
static void |
620 |
root |
1.24 |
call_pending (void) |
621 |
root |
1.1 |
{ |
622 |
root |
1.42 |
int pri; |
623 |
|
|
|
624 |
|
|
for (pri = NUMPRI; pri--; ) |
625 |
|
|
while (pendingcnt [pri]) |
626 |
|
|
{ |
627 |
|
|
ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
628 |
root |
1.1 |
|
629 |
root |
1.42 |
if (p->w) |
630 |
|
|
{ |
631 |
|
|
p->w->pending = 0; |
632 |
|
|
p->w->cb (p->w, p->events); |
633 |
|
|
} |
634 |
|
|
} |
635 |
root |
1.1 |
} |
636 |
|
|
|
637 |
|
|
static void |
638 |
root |
1.24 |
timers_reify (void) |
639 |
root |
1.1 |
{ |
640 |
root |
1.4 |
while (timercnt && timers [0]->at <= now) |
641 |
root |
1.1 |
{ |
642 |
|
|
struct ev_timer *w = timers [0]; |
643 |
|
|
|
644 |
root |
1.4 |
/* first reschedule or stop timer */ |
645 |
root |
1.1 |
if (w->repeat) |
646 |
|
|
{ |
647 |
root |
1.33 |
assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
648 |
root |
1.12 |
w->at = now + w->repeat; |
649 |
|
|
downheap ((WT *)timers, timercnt, 0); |
650 |
|
|
} |
651 |
|
|
else |
652 |
root |
1.28 |
ev_timer_stop (w); /* nonrepeating: stop timer */ |
653 |
root |
1.30 |
|
654 |
|
|
event ((W)w, EV_TIMEOUT); |
655 |
root |
1.12 |
} |
656 |
|
|
} |
657 |
root |
1.4 |
|
658 |
root |
1.12 |
static void |
659 |
root |
1.24 |
periodics_reify (void) |
660 |
root |
1.12 |
{ |
661 |
|
|
while (periodiccnt && periodics [0]->at <= ev_now) |
662 |
|
|
{ |
663 |
|
|
struct ev_periodic *w = periodics [0]; |
664 |
root |
1.1 |
|
665 |
root |
1.12 |
/* first reschedule or stop timer */ |
666 |
|
|
if (w->interval) |
667 |
|
|
{ |
668 |
|
|
w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
669 |
root |
1.33 |
assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
670 |
root |
1.12 |
downheap ((WT *)periodics, periodiccnt, 0); |
671 |
root |
1.1 |
} |
672 |
|
|
else |
673 |
root |
1.28 |
ev_periodic_stop (w); /* nonrepeating: stop timer */ |
674 |
root |
1.12 |
|
675 |
root |
1.33 |
event ((W)w, EV_PERIODIC); |
676 |
root |
1.12 |
} |
677 |
|
|
} |
678 |
|
|
|
679 |
|
|
static void |
680 |
root |
1.13 |
periodics_reschedule (ev_tstamp diff) |
681 |
root |
1.12 |
{ |
682 |
|
|
int i; |
683 |
|
|
|
684 |
root |
1.13 |
/* adjust periodics after time jump */ |
685 |
root |
1.12 |
for (i = 0; i < periodiccnt; ++i) |
686 |
|
|
{ |
687 |
|
|
struct ev_periodic *w = periodics [i]; |
688 |
|
|
|
689 |
|
|
if (w->interval) |
690 |
root |
1.4 |
{ |
691 |
root |
1.12 |
ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
692 |
|
|
|
693 |
|
|
if (fabs (diff) >= 1e-4) |
694 |
|
|
{ |
695 |
root |
1.28 |
ev_periodic_stop (w); |
696 |
|
|
ev_periodic_start (w); |
697 |
root |
1.12 |
|
698 |
|
|
i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
699 |
|
|
} |
700 |
root |
1.4 |
} |
701 |
root |
1.12 |
} |
702 |
root |
1.1 |
} |
703 |
|
|
|
704 |
root |
1.40 |
static int |
705 |
|
|
time_update_monotonic (void) |
706 |
|
|
{ |
707 |
|
|
now = get_clock (); |
708 |
|
|
|
709 |
|
|
if (expect_true (now - now_floor < MIN_TIMEJUMP * .5)) |
710 |
|
|
{ |
711 |
|
|
ev_now = now + diff; |
712 |
|
|
return 0; |
713 |
|
|
} |
714 |
|
|
else |
715 |
|
|
{ |
716 |
|
|
now_floor = now; |
717 |
|
|
ev_now = ev_time (); |
718 |
|
|
return 1; |
719 |
|
|
} |
720 |
|
|
} |
721 |
|
|
|
722 |
root |
1.4 |
static void |
723 |
root |
1.24 |
time_update (void) |
724 |
root |
1.4 |
{ |
725 |
|
|
int i; |
726 |
root |
1.12 |
|
727 |
root |
1.40 |
#if EV_USE_MONOTONIC |
728 |
|
|
if (expect_true (have_monotonic)) |
729 |
|
|
{ |
730 |
|
|
if (time_update_monotonic ()) |
731 |
|
|
{ |
732 |
|
|
ev_tstamp odiff = diff; |
733 |
root |
1.4 |
|
734 |
root |
1.40 |
for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
735 |
|
|
{ |
736 |
|
|
diff = ev_now - now; |
737 |
root |
1.4 |
|
738 |
root |
1.40 |
if (fabs (odiff - diff) < MIN_TIMEJUMP) |
739 |
|
|
return; /* all is well */ |
740 |
root |
1.4 |
|
741 |
root |
1.40 |
ev_now = ev_time (); |
742 |
|
|
now = get_clock (); |
743 |
|
|
now_floor = now; |
744 |
|
|
} |
745 |
root |
1.4 |
|
746 |
root |
1.40 |
periodics_reschedule (diff - odiff); |
747 |
|
|
/* no timer adjustment, as the monotonic clock doesn't jump */ |
748 |
root |
1.4 |
} |
749 |
|
|
} |
750 |
|
|
else |
751 |
root |
1.40 |
#endif |
752 |
root |
1.4 |
{ |
753 |
root |
1.40 |
ev_now = ev_time (); |
754 |
|
|
|
755 |
|
|
if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
756 |
root |
1.13 |
{ |
757 |
|
|
periodics_reschedule (ev_now - now); |
758 |
|
|
|
759 |
|
|
/* adjust timers. this is easy, as the offset is the same for all */ |
760 |
|
|
for (i = 0; i < timercnt; ++i) |
761 |
|
|
timers [i]->at += diff; |
762 |
|
|
} |
763 |
root |
1.4 |
|
764 |
|
|
now = ev_now; |
765 |
|
|
} |
766 |
|
|
} |
767 |
|
|
|
768 |
root |
1.1 |
int ev_loop_done; |
769 |
|
|
|
770 |
root |
1.4 |
void ev_loop (int flags) |
771 |
root |
1.1 |
{ |
772 |
|
|
double block; |
773 |
root |
1.26 |
ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
774 |
root |
1.1 |
|
775 |
root |
1.20 |
do |
776 |
root |
1.9 |
{ |
777 |
root |
1.20 |
/* queue check watchers (and execute them) */ |
778 |
root |
1.40 |
if (expect_false (preparecnt)) |
779 |
root |
1.20 |
{ |
780 |
|
|
queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
781 |
|
|
call_pending (); |
782 |
|
|
} |
783 |
root |
1.9 |
|
784 |
root |
1.1 |
/* update fd-related kernel structures */ |
785 |
root |
1.5 |
fd_reify (); |
786 |
root |
1.1 |
|
787 |
|
|
/* calculate blocking time */ |
788 |
root |
1.12 |
|
789 |
root |
1.21 |
/* we only need this for !monotonic clockor timers, but as we basically |
790 |
|
|
always have timers, we just calculate it always */ |
791 |
root |
1.40 |
#if EV_USE_MONOTONIC |
792 |
|
|
if (expect_true (have_monotonic)) |
793 |
|
|
time_update_monotonic (); |
794 |
|
|
else |
795 |
|
|
#endif |
796 |
|
|
{ |
797 |
|
|
ev_now = ev_time (); |
798 |
|
|
now = ev_now; |
799 |
|
|
} |
800 |
root |
1.12 |
|
801 |
root |
1.9 |
if (flags & EVLOOP_NONBLOCK || idlecnt) |
802 |
root |
1.1 |
block = 0.; |
803 |
|
|
else |
804 |
|
|
{ |
805 |
root |
1.4 |
block = MAX_BLOCKTIME; |
806 |
|
|
|
807 |
root |
1.12 |
if (timercnt) |
808 |
root |
1.4 |
{ |
809 |
root |
1.40 |
ev_tstamp to = timers [0]->at - now + method_fudge; |
810 |
root |
1.4 |
if (block > to) block = to; |
811 |
|
|
} |
812 |
|
|
|
813 |
root |
1.12 |
if (periodiccnt) |
814 |
root |
1.4 |
{ |
815 |
root |
1.12 |
ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
816 |
root |
1.4 |
if (block > to) block = to; |
817 |
|
|
} |
818 |
|
|
|
819 |
root |
1.1 |
if (block < 0.) block = 0.; |
820 |
|
|
} |
821 |
|
|
|
822 |
|
|
method_poll (block); |
823 |
|
|
|
824 |
root |
1.4 |
/* update ev_now, do magic */ |
825 |
|
|
time_update (); |
826 |
|
|
|
827 |
root |
1.9 |
/* queue pending timers and reschedule them */ |
828 |
root |
1.20 |
timers_reify (); /* relative timers called last */ |
829 |
|
|
periodics_reify (); /* absolute timers called first */ |
830 |
root |
1.1 |
|
831 |
root |
1.9 |
/* queue idle watchers unless io or timers are pending */ |
832 |
|
|
if (!pendingcnt) |
833 |
root |
1.10 |
queue_events ((W *)idles, idlecnt, EV_IDLE); |
834 |
root |
1.9 |
|
835 |
root |
1.20 |
/* queue check watchers, to be executed first */ |
836 |
|
|
if (checkcnt) |
837 |
|
|
queue_events ((W *)checks, checkcnt, EV_CHECK); |
838 |
root |
1.9 |
|
839 |
root |
1.1 |
call_pending (); |
840 |
|
|
} |
841 |
|
|
while (!ev_loop_done); |
842 |
root |
1.13 |
|
843 |
|
|
if (ev_loop_done != 2) |
844 |
|
|
ev_loop_done = 0; |
845 |
root |
1.1 |
} |
846 |
|
|
|
847 |
root |
1.8 |
/*****************************************************************************/ |
848 |
|
|
|
849 |
root |
1.1 |
static void |
850 |
root |
1.10 |
wlist_add (WL *head, WL elem) |
851 |
root |
1.1 |
{ |
852 |
|
|
elem->next = *head; |
853 |
|
|
*head = elem; |
854 |
|
|
} |
855 |
|
|
|
856 |
|
|
static void |
857 |
root |
1.10 |
wlist_del (WL *head, WL elem) |
858 |
root |
1.1 |
{ |
859 |
|
|
while (*head) |
860 |
|
|
{ |
861 |
|
|
if (*head == elem) |
862 |
|
|
{ |
863 |
|
|
*head = elem->next; |
864 |
|
|
return; |
865 |
|
|
} |
866 |
|
|
|
867 |
|
|
head = &(*head)->next; |
868 |
|
|
} |
869 |
|
|
} |
870 |
|
|
|
871 |
|
|
static void |
872 |
root |
1.33 |
ev_clear_pending (W w) |
873 |
root |
1.16 |
{ |
874 |
|
|
if (w->pending) |
875 |
|
|
{ |
876 |
root |
1.42 |
pendings [ABSPRI (w)][w->pending - 1].w = 0; |
877 |
root |
1.16 |
w->pending = 0; |
878 |
|
|
} |
879 |
|
|
} |
880 |
|
|
|
881 |
|
|
static void |
882 |
root |
1.10 |
ev_start (W w, int active) |
883 |
root |
1.1 |
{ |
884 |
root |
1.43 |
if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
885 |
|
|
if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
886 |
|
|
|
887 |
root |
1.1 |
w->active = active; |
888 |
|
|
} |
889 |
|
|
|
890 |
|
|
static void |
891 |
root |
1.10 |
ev_stop (W w) |
892 |
root |
1.1 |
{ |
893 |
|
|
w->active = 0; |
894 |
|
|
} |
895 |
|
|
|
896 |
root |
1.8 |
/*****************************************************************************/ |
897 |
|
|
|
898 |
root |
1.1 |
void |
899 |
root |
1.28 |
ev_io_start (struct ev_io *w) |
900 |
root |
1.1 |
{ |
901 |
root |
1.37 |
int fd = w->fd; |
902 |
|
|
|
903 |
root |
1.1 |
if (ev_is_active (w)) |
904 |
|
|
return; |
905 |
|
|
|
906 |
root |
1.33 |
assert (("ev_io_start called with negative fd", fd >= 0)); |
907 |
|
|
|
908 |
root |
1.10 |
ev_start ((W)w, 1); |
909 |
root |
1.1 |
array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
910 |
root |
1.10 |
wlist_add ((WL *)&anfds[fd].head, (WL)w); |
911 |
root |
1.1 |
|
912 |
root |
1.27 |
fd_change (fd); |
913 |
root |
1.1 |
} |
914 |
|
|
|
915 |
|
|
void |
916 |
root |
1.28 |
ev_io_stop (struct ev_io *w) |
917 |
root |
1.1 |
{ |
918 |
root |
1.33 |
ev_clear_pending ((W)w); |
919 |
root |
1.1 |
if (!ev_is_active (w)) |
920 |
|
|
return; |
921 |
|
|
|
922 |
root |
1.10 |
wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
923 |
|
|
ev_stop ((W)w); |
924 |
root |
1.1 |
|
925 |
root |
1.27 |
fd_change (w->fd); |
926 |
root |
1.1 |
} |
927 |
|
|
|
928 |
|
|
void |
929 |
root |
1.28 |
ev_timer_start (struct ev_timer *w) |
930 |
root |
1.1 |
{ |
931 |
|
|
if (ev_is_active (w)) |
932 |
|
|
return; |
933 |
|
|
|
934 |
root |
1.12 |
w->at += now; |
935 |
|
|
|
936 |
root |
1.33 |
assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
937 |
root |
1.13 |
|
938 |
root |
1.12 |
ev_start ((W)w, ++timercnt); |
939 |
|
|
array_needsize (timers, timermax, timercnt, ); |
940 |
|
|
timers [timercnt - 1] = w; |
941 |
|
|
upheap ((WT *)timers, timercnt - 1); |
942 |
|
|
} |
943 |
|
|
|
944 |
|
|
void |
945 |
root |
1.28 |
ev_timer_stop (struct ev_timer *w) |
946 |
root |
1.12 |
{ |
947 |
root |
1.33 |
ev_clear_pending ((W)w); |
948 |
root |
1.12 |
if (!ev_is_active (w)) |
949 |
|
|
return; |
950 |
|
|
|
951 |
|
|
if (w->active < timercnt--) |
952 |
root |
1.1 |
{ |
953 |
root |
1.12 |
timers [w->active - 1] = timers [timercnt]; |
954 |
|
|
downheap ((WT *)timers, timercnt, w->active - 1); |
955 |
|
|
} |
956 |
root |
1.4 |
|
957 |
root |
1.14 |
w->at = w->repeat; |
958 |
|
|
|
959 |
root |
1.12 |
ev_stop ((W)w); |
960 |
|
|
} |
961 |
root |
1.4 |
|
962 |
root |
1.12 |
void |
963 |
root |
1.28 |
ev_timer_again (struct ev_timer *w) |
964 |
root |
1.14 |
{ |
965 |
|
|
if (ev_is_active (w)) |
966 |
|
|
{ |
967 |
|
|
if (w->repeat) |
968 |
|
|
{ |
969 |
|
|
w->at = now + w->repeat; |
970 |
|
|
downheap ((WT *)timers, timercnt, w->active - 1); |
971 |
|
|
} |
972 |
|
|
else |
973 |
root |
1.28 |
ev_timer_stop (w); |
974 |
root |
1.14 |
} |
975 |
|
|
else if (w->repeat) |
976 |
root |
1.28 |
ev_timer_start (w); |
977 |
root |
1.14 |
} |
978 |
|
|
|
979 |
|
|
void |
980 |
root |
1.28 |
ev_periodic_start (struct ev_periodic *w) |
981 |
root |
1.12 |
{ |
982 |
|
|
if (ev_is_active (w)) |
983 |
|
|
return; |
984 |
root |
1.1 |
|
985 |
root |
1.33 |
assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
986 |
root |
1.13 |
|
987 |
root |
1.12 |
/* this formula differs from the one in periodic_reify because we do not always round up */ |
988 |
|
|
if (w->interval) |
989 |
|
|
w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
990 |
|
|
|
991 |
|
|
ev_start ((W)w, ++periodiccnt); |
992 |
|
|
array_needsize (periodics, periodicmax, periodiccnt, ); |
993 |
|
|
periodics [periodiccnt - 1] = w; |
994 |
|
|
upheap ((WT *)periodics, periodiccnt - 1); |
995 |
root |
1.1 |
} |
996 |
|
|
|
997 |
|
|
void |
998 |
root |
1.28 |
ev_periodic_stop (struct ev_periodic *w) |
999 |
root |
1.1 |
{ |
1000 |
root |
1.33 |
ev_clear_pending ((W)w); |
1001 |
root |
1.1 |
if (!ev_is_active (w)) |
1002 |
|
|
return; |
1003 |
|
|
|
1004 |
root |
1.12 |
if (w->active < periodiccnt--) |
1005 |
root |
1.2 |
{ |
1006 |
root |
1.12 |
periodics [w->active - 1] = periodics [periodiccnt]; |
1007 |
|
|
downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1008 |
root |
1.2 |
} |
1009 |
|
|
|
1010 |
root |
1.10 |
ev_stop ((W)w); |
1011 |
root |
1.1 |
} |
1012 |
|
|
|
1013 |
|
|
void |
1014 |
root |
1.28 |
ev_signal_start (struct ev_signal *w) |
1015 |
root |
1.1 |
{ |
1016 |
|
|
if (ev_is_active (w)) |
1017 |
|
|
return; |
1018 |
|
|
|
1019 |
root |
1.33 |
assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1020 |
|
|
|
1021 |
root |
1.10 |
ev_start ((W)w, 1); |
1022 |
root |
1.1 |
array_needsize (signals, signalmax, w->signum, signals_init); |
1023 |
root |
1.10 |
wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1024 |
root |
1.7 |
|
1025 |
|
|
if (!w->next) |
1026 |
|
|
{ |
1027 |
|
|
struct sigaction sa; |
1028 |
|
|
sa.sa_handler = sighandler; |
1029 |
|
|
sigfillset (&sa.sa_mask); |
1030 |
|
|
sa.sa_flags = 0; |
1031 |
|
|
sigaction (w->signum, &sa, 0); |
1032 |
|
|
} |
1033 |
root |
1.1 |
} |
1034 |
|
|
|
1035 |
|
|
void |
1036 |
root |
1.28 |
ev_signal_stop (struct ev_signal *w) |
1037 |
root |
1.1 |
{ |
1038 |
root |
1.33 |
ev_clear_pending ((W)w); |
1039 |
root |
1.1 |
if (!ev_is_active (w)) |
1040 |
|
|
return; |
1041 |
|
|
|
1042 |
root |
1.10 |
wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1043 |
|
|
ev_stop ((W)w); |
1044 |
root |
1.7 |
|
1045 |
|
|
if (!signals [w->signum - 1].head) |
1046 |
|
|
signal (w->signum, SIG_DFL); |
1047 |
root |
1.1 |
} |
1048 |
|
|
|
1049 |
root |
1.28 |
void |
1050 |
|
|
ev_idle_start (struct ev_idle *w) |
1051 |
root |
1.9 |
{ |
1052 |
|
|
if (ev_is_active (w)) |
1053 |
|
|
return; |
1054 |
|
|
|
1055 |
root |
1.10 |
ev_start ((W)w, ++idlecnt); |
1056 |
root |
1.9 |
array_needsize (idles, idlemax, idlecnt, ); |
1057 |
|
|
idles [idlecnt - 1] = w; |
1058 |
|
|
} |
1059 |
|
|
|
1060 |
root |
1.28 |
void |
1061 |
|
|
ev_idle_stop (struct ev_idle *w) |
1062 |
root |
1.9 |
{ |
1063 |
root |
1.33 |
ev_clear_pending ((W)w); |
1064 |
root |
1.16 |
if (ev_is_active (w)) |
1065 |
|
|
return; |
1066 |
|
|
|
1067 |
root |
1.9 |
idles [w->active - 1] = idles [--idlecnt]; |
1068 |
root |
1.10 |
ev_stop ((W)w); |
1069 |
root |
1.9 |
} |
1070 |
|
|
|
1071 |
root |
1.28 |
void |
1072 |
|
|
ev_prepare_start (struct ev_prepare *w) |
1073 |
root |
1.20 |
{ |
1074 |
|
|
if (ev_is_active (w)) |
1075 |
|
|
return; |
1076 |
|
|
|
1077 |
|
|
ev_start ((W)w, ++preparecnt); |
1078 |
|
|
array_needsize (prepares, preparemax, preparecnt, ); |
1079 |
|
|
prepares [preparecnt - 1] = w; |
1080 |
|
|
} |
1081 |
|
|
|
1082 |
root |
1.28 |
void |
1083 |
|
|
ev_prepare_stop (struct ev_prepare *w) |
1084 |
root |
1.20 |
{ |
1085 |
root |
1.33 |
ev_clear_pending ((W)w); |
1086 |
root |
1.20 |
if (ev_is_active (w)) |
1087 |
|
|
return; |
1088 |
|
|
|
1089 |
|
|
prepares [w->active - 1] = prepares [--preparecnt]; |
1090 |
|
|
ev_stop ((W)w); |
1091 |
|
|
} |
1092 |
|
|
|
1093 |
root |
1.28 |
void |
1094 |
|
|
ev_check_start (struct ev_check *w) |
1095 |
root |
1.9 |
{ |
1096 |
|
|
if (ev_is_active (w)) |
1097 |
|
|
return; |
1098 |
|
|
|
1099 |
root |
1.10 |
ev_start ((W)w, ++checkcnt); |
1100 |
root |
1.9 |
array_needsize (checks, checkmax, checkcnt, ); |
1101 |
|
|
checks [checkcnt - 1] = w; |
1102 |
|
|
} |
1103 |
|
|
|
1104 |
root |
1.28 |
void |
1105 |
|
|
ev_check_stop (struct ev_check *w) |
1106 |
root |
1.9 |
{ |
1107 |
root |
1.33 |
ev_clear_pending ((W)w); |
1108 |
root |
1.16 |
if (ev_is_active (w)) |
1109 |
|
|
return; |
1110 |
|
|
|
1111 |
root |
1.9 |
checks [w->active - 1] = checks [--checkcnt]; |
1112 |
root |
1.10 |
ev_stop ((W)w); |
1113 |
root |
1.9 |
} |
1114 |
|
|
|
1115 |
root |
1.28 |
void |
1116 |
|
|
ev_child_start (struct ev_child *w) |
1117 |
root |
1.22 |
{ |
1118 |
|
|
if (ev_is_active (w)) |
1119 |
|
|
return; |
1120 |
|
|
|
1121 |
|
|
ev_start ((W)w, 1); |
1122 |
|
|
wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1123 |
|
|
} |
1124 |
|
|
|
1125 |
root |
1.28 |
void |
1126 |
|
|
ev_child_stop (struct ev_child *w) |
1127 |
root |
1.22 |
{ |
1128 |
root |
1.33 |
ev_clear_pending ((W)w); |
1129 |
root |
1.22 |
if (ev_is_active (w)) |
1130 |
|
|
return; |
1131 |
|
|
|
1132 |
|
|
wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1133 |
|
|
ev_stop ((W)w); |
1134 |
|
|
} |
1135 |
|
|
|
1136 |
root |
1.1 |
/*****************************************************************************/ |
1137 |
root |
1.10 |
|
1138 |
root |
1.16 |
struct ev_once |
1139 |
|
|
{ |
1140 |
|
|
struct ev_io io; |
1141 |
|
|
struct ev_timer to; |
1142 |
|
|
void (*cb)(int revents, void *arg); |
1143 |
|
|
void *arg; |
1144 |
|
|
}; |
1145 |
|
|
|
1146 |
|
|
static void |
1147 |
|
|
once_cb (struct ev_once *once, int revents) |
1148 |
|
|
{ |
1149 |
|
|
void (*cb)(int revents, void *arg) = once->cb; |
1150 |
|
|
void *arg = once->arg; |
1151 |
|
|
|
1152 |
root |
1.28 |
ev_io_stop (&once->io); |
1153 |
|
|
ev_timer_stop (&once->to); |
1154 |
root |
1.16 |
free (once); |
1155 |
|
|
|
1156 |
|
|
cb (revents, arg); |
1157 |
|
|
} |
1158 |
|
|
|
1159 |
|
|
static void |
1160 |
|
|
once_cb_io (struct ev_io *w, int revents) |
1161 |
|
|
{ |
1162 |
|
|
once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1163 |
|
|
} |
1164 |
|
|
|
1165 |
|
|
static void |
1166 |
|
|
once_cb_to (struct ev_timer *w, int revents) |
1167 |
|
|
{ |
1168 |
|
|
once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1169 |
|
|
} |
1170 |
|
|
|
1171 |
|
|
void |
1172 |
|
|
ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1173 |
|
|
{ |
1174 |
|
|
struct ev_once *once = malloc (sizeof (struct ev_once)); |
1175 |
|
|
|
1176 |
|
|
if (!once) |
1177 |
root |
1.29 |
cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1178 |
root |
1.16 |
else |
1179 |
|
|
{ |
1180 |
|
|
once->cb = cb; |
1181 |
|
|
once->arg = arg; |
1182 |
|
|
|
1183 |
root |
1.28 |
ev_watcher_init (&once->io, once_cb_io); |
1184 |
root |
1.16 |
if (fd >= 0) |
1185 |
|
|
{ |
1186 |
root |
1.28 |
ev_io_set (&once->io, fd, events); |
1187 |
|
|
ev_io_start (&once->io); |
1188 |
root |
1.16 |
} |
1189 |
|
|
|
1190 |
root |
1.28 |
ev_watcher_init (&once->to, once_cb_to); |
1191 |
root |
1.16 |
if (timeout >= 0.) |
1192 |
|
|
{ |
1193 |
root |
1.28 |
ev_timer_set (&once->to, timeout, 0.); |
1194 |
|
|
ev_timer_start (&once->to); |
1195 |
root |
1.16 |
} |
1196 |
|
|
} |
1197 |
|
|
} |
1198 |
|
|
|
1199 |
|
|
/*****************************************************************************/ |
1200 |
|
|
|
1201 |
root |
1.13 |
#if 0 |
1202 |
root |
1.12 |
|
1203 |
|
|
struct ev_io wio; |
1204 |
root |
1.1 |
|
1205 |
|
|
static void |
1206 |
|
|
sin_cb (struct ev_io *w, int revents) |
1207 |
|
|
{ |
1208 |
|
|
fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
1209 |
|
|
} |
1210 |
|
|
|
1211 |
|
|
static void |
1212 |
|
|
ocb (struct ev_timer *w, int revents) |
1213 |
|
|
{ |
1214 |
root |
1.4 |
//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
1215 |
root |
1.28 |
ev_timer_stop (w); |
1216 |
|
|
ev_timer_start (w); |
1217 |
root |
1.1 |
} |
1218 |
|
|
|
1219 |
root |
1.7 |
static void |
1220 |
|
|
scb (struct ev_signal *w, int revents) |
1221 |
|
|
{ |
1222 |
|
|
fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
1223 |
root |
1.28 |
ev_io_stop (&wio); |
1224 |
|
|
ev_io_start (&wio); |
1225 |
root |
1.7 |
} |
1226 |
|
|
|
1227 |
root |
1.9 |
static void |
1228 |
|
|
gcb (struct ev_signal *w, int revents) |
1229 |
|
|
{ |
1230 |
|
|
fprintf (stderr, "generic %x\n", revents); |
1231 |
root |
1.12 |
|
1232 |
root |
1.9 |
} |
1233 |
|
|
|
1234 |
root |
1.1 |
int main (void) |
1235 |
|
|
{ |
1236 |
|
|
ev_init (0); |
1237 |
|
|
|
1238 |
root |
1.28 |
ev_io_init (&wio, sin_cb, 0, EV_READ); |
1239 |
|
|
ev_io_start (&wio); |
1240 |
root |
1.1 |
|
1241 |
root |
1.4 |
struct ev_timer t[10000]; |
1242 |
root |
1.2 |
|
1243 |
root |
1.9 |
#if 0 |
1244 |
root |
1.2 |
int i; |
1245 |
root |
1.4 |
for (i = 0; i < 10000; ++i) |
1246 |
root |
1.2 |
{ |
1247 |
|
|
struct ev_timer *w = t + i; |
1248 |
root |
1.28 |
ev_watcher_init (w, ocb, i); |
1249 |
|
|
ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
1250 |
|
|
ev_timer_start (w); |
1251 |
root |
1.2 |
if (drand48 () < 0.5) |
1252 |
root |
1.28 |
ev_timer_stop (w); |
1253 |
root |
1.2 |
} |
1254 |
root |
1.4 |
#endif |
1255 |
|
|
|
1256 |
|
|
struct ev_timer t1; |
1257 |
root |
1.28 |
ev_timer_init (&t1, ocb, 5, 10); |
1258 |
|
|
ev_timer_start (&t1); |
1259 |
root |
1.1 |
|
1260 |
root |
1.7 |
struct ev_signal sig; |
1261 |
root |
1.28 |
ev_signal_init (&sig, scb, SIGQUIT); |
1262 |
|
|
ev_signal_start (&sig); |
1263 |
root |
1.7 |
|
1264 |
root |
1.9 |
struct ev_check cw; |
1265 |
root |
1.28 |
ev_check_init (&cw, gcb); |
1266 |
|
|
ev_check_start (&cw); |
1267 |
root |
1.9 |
|
1268 |
|
|
struct ev_idle iw; |
1269 |
root |
1.28 |
ev_idle_init (&iw, gcb); |
1270 |
|
|
ev_idle_start (&iw); |
1271 |
root |
1.9 |
|
1272 |
root |
1.1 |
ev_loop (0); |
1273 |
|
|
|
1274 |
|
|
return 0; |
1275 |
|
|
} |
1276 |
|
|
|
1277 |
|
|
#endif |
1278 |
|
|
|
1279 |
|
|
|
1280 |
|
|
|
1281 |
|
|
|