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1.17 |
/* |
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1.36 |
* libev event processing core, watcher management |
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* |
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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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*/ |
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1.50 |
#ifndef EV_STANDALONE |
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root |
1.29 |
# include "config.h" |
33 |
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#endif |
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1.17 |
|
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1.1 |
#include <math.h> |
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#include <stdlib.h> |
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1.7 |
#include <unistd.h> |
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#include <fcntl.h> |
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#include <signal.h> |
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1.16 |
#include <stddef.h> |
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1.1 |
|
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#include <stdio.h> |
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|
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1.4 |
#include <assert.h> |
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1.1 |
#include <errno.h> |
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1.22 |
#include <sys/types.h> |
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1.45 |
#ifndef WIN32 |
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# include <sys/wait.h> |
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#endif |
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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 |
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1.29 |
#ifndef EV_USE_MONOTONIC |
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1.37 |
# define EV_USE_MONOTONIC 1 |
57 |
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#endif |
58 |
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59 |
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1.29 |
#ifndef EV_USE_SELECT |
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# define EV_USE_SELECT 1 |
61 |
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1.10 |
#endif |
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63 |
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1.51 |
#ifndef EV_USEV_POLL |
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# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */ |
65 |
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1.41 |
#endif |
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67 |
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1.29 |
#ifndef EV_USE_EPOLL |
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# define EV_USE_EPOLL 0 |
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1.10 |
#endif |
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71 |
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1.44 |
#ifndef EV_USE_KQUEUE |
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# define EV_USE_KQUEUE 0 |
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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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/**/ |
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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 |
84 |
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#endif |
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86 |
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1.31 |
#ifndef CLOCK_REALTIME |
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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 |
|
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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 |
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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 |
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1.10 |
typedef struct ev_watcher *W; |
115 |
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typedef struct ev_watcher_list *WL; |
116 |
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1.12 |
typedef struct ev_watcher_time *WT; |
117 |
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1.10 |
|
118 |
root |
1.53 |
/*****************************************************************************/ |
119 |
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1.1 |
|
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1.53 |
typedef struct |
121 |
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{ |
122 |
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struct ev_watcher_list *head; |
123 |
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unsigned char events; |
124 |
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unsigned char reify; |
125 |
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} ANFD; |
126 |
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1.1 |
|
127 |
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1.53 |
typedef struct |
128 |
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{ |
129 |
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W w; |
130 |
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int events; |
131 |
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} ANPENDING; |
132 |
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1.51 |
|
133 |
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1.53 |
#ifdef EV_MULTIPLICITY |
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struct ev_loop |
135 |
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{ |
136 |
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# define VAR(name,decl) decl |
137 |
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# include "ev_vars.h" |
138 |
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}; |
139 |
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#else |
140 |
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# define VAR(name,decl) static decl |
141 |
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# include "ev_vars.h" |
142 |
root |
1.51 |
#endif |
143 |
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1.53 |
#undef VAR |
144 |
root |
1.1 |
|
145 |
root |
1.8 |
/*****************************************************************************/ |
146 |
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147 |
root |
1.51 |
inline ev_tstamp |
148 |
root |
1.1 |
ev_time (void) |
149 |
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{ |
150 |
root |
1.29 |
#if EV_USE_REALTIME |
151 |
root |
1.1 |
struct timespec ts; |
152 |
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clock_gettime (CLOCK_REALTIME, &ts); |
153 |
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return ts.tv_sec + ts.tv_nsec * 1e-9; |
154 |
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#else |
155 |
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struct timeval tv; |
156 |
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gettimeofday (&tv, 0); |
157 |
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return tv.tv_sec + tv.tv_usec * 1e-6; |
158 |
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#endif |
159 |
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} |
160 |
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161 |
root |
1.51 |
inline ev_tstamp |
162 |
root |
1.1 |
get_clock (void) |
163 |
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{ |
164 |
root |
1.29 |
#if EV_USE_MONOTONIC |
165 |
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1.40 |
if (expect_true (have_monotonic)) |
166 |
root |
1.1 |
{ |
167 |
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struct timespec ts; |
168 |
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clock_gettime (CLOCK_MONOTONIC, &ts); |
169 |
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return ts.tv_sec + ts.tv_nsec * 1e-9; |
170 |
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} |
171 |
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#endif |
172 |
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173 |
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return ev_time (); |
174 |
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} |
175 |
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176 |
root |
1.51 |
ev_tstamp |
177 |
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ev_now (EV_P) |
178 |
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{ |
179 |
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return rt_now; |
180 |
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} |
181 |
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182 |
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1.30 |
#define array_roundsize(base,n) ((n) | 4 & ~3) |
183 |
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1.29 |
|
184 |
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1.1 |
#define array_needsize(base,cur,cnt,init) \ |
185 |
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1.40 |
if (expect_false ((cnt) > cur)) \ |
186 |
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1.1 |
{ \ |
187 |
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1.23 |
int newcnt = cur; \ |
188 |
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do \ |
189 |
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{ \ |
190 |
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1.30 |
newcnt = array_roundsize (base, newcnt << 1); \ |
191 |
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1.23 |
} \ |
192 |
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while ((cnt) > newcnt); \ |
193 |
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\ |
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1.1 |
base = realloc (base, sizeof (*base) * (newcnt)); \ |
195 |
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init (base + cur, newcnt - cur); \ |
196 |
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cur = newcnt; \ |
197 |
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} |
198 |
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199 |
root |
1.8 |
/*****************************************************************************/ |
200 |
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201 |
root |
1.1 |
static void |
202 |
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anfds_init (ANFD *base, int count) |
203 |
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{ |
204 |
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while (count--) |
205 |
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{ |
206 |
root |
1.27 |
base->head = 0; |
207 |
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base->events = EV_NONE; |
208 |
root |
1.33 |
base->reify = 0; |
209 |
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210 |
root |
1.1 |
++base; |
211 |
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} |
212 |
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} |
213 |
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214 |
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static void |
215 |
root |
1.51 |
event (EV_P_ W w, int events) |
216 |
root |
1.1 |
{ |
217 |
root |
1.32 |
if (w->pending) |
218 |
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{ |
219 |
root |
1.42 |
pendings [ABSPRI (w)][w->pending - 1].events |= events; |
220 |
root |
1.32 |
return; |
221 |
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} |
222 |
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223 |
root |
1.42 |
w->pending = ++pendingcnt [ABSPRI (w)]; |
224 |
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array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
225 |
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pendings [ABSPRI (w)][w->pending - 1].w = w; |
226 |
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pendings [ABSPRI (w)][w->pending - 1].events = events; |
227 |
root |
1.1 |
} |
228 |
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229 |
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static void |
230 |
root |
1.51 |
queue_events (EV_P_ W *events, int eventcnt, int type) |
231 |
root |
1.27 |
{ |
232 |
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int i; |
233 |
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234 |
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for (i = 0; i < eventcnt; ++i) |
235 |
root |
1.51 |
event (EV_A_ events [i], type); |
236 |
root |
1.27 |
} |
237 |
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|
238 |
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static void |
239 |
root |
1.51 |
fd_event (EV_P_ int fd, int events) |
240 |
root |
1.1 |
{ |
241 |
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ANFD *anfd = anfds + fd; |
242 |
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struct ev_io *w; |
243 |
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|
244 |
root |
1.50 |
for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
245 |
root |
1.1 |
{ |
246 |
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int ev = w->events & events; |
247 |
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|
248 |
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if (ev) |
249 |
root |
1.51 |
event (EV_A_ (W)w, ev); |
250 |
root |
1.1 |
} |
251 |
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} |
252 |
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253 |
root |
1.27 |
/*****************************************************************************/ |
254 |
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|
255 |
root |
1.9 |
static void |
256 |
root |
1.51 |
fd_reify (EV_P) |
257 |
root |
1.9 |
{ |
258 |
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int i; |
259 |
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|
260 |
root |
1.27 |
for (i = 0; i < fdchangecnt; ++i) |
261 |
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{ |
262 |
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int fd = fdchanges [i]; |
263 |
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ANFD *anfd = anfds + fd; |
264 |
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struct ev_io *w; |
265 |
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266 |
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int events = 0; |
267 |
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|
268 |
root |
1.50 |
for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
269 |
root |
1.27 |
events |= w->events; |
270 |
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|
271 |
root |
1.33 |
anfd->reify = 0; |
272 |
root |
1.27 |
|
273 |
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if (anfd->events != events) |
274 |
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{ |
275 |
root |
1.51 |
method_modify (EV_A_ fd, anfd->events, events); |
276 |
root |
1.27 |
anfd->events = events; |
277 |
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} |
278 |
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} |
279 |
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|
280 |
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fdchangecnt = 0; |
281 |
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} |
282 |
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|
283 |
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static void |
284 |
root |
1.51 |
fd_change (EV_P_ int fd) |
285 |
root |
1.27 |
{ |
286 |
root |
1.33 |
if (anfds [fd].reify || fdchangecnt < 0) |
287 |
root |
1.27 |
return; |
288 |
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|
289 |
root |
1.33 |
anfds [fd].reify = 1; |
290 |
root |
1.27 |
|
291 |
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++fdchangecnt; |
292 |
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array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
293 |
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fdchanges [fdchangecnt - 1] = fd; |
294 |
root |
1.9 |
} |
295 |
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|
296 |
root |
1.41 |
static void |
297 |
root |
1.51 |
fd_kill (EV_P_ int fd) |
298 |
root |
1.41 |
{ |
299 |
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struct ev_io *w; |
300 |
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|
301 |
root |
1.50 |
while ((w = (struct ev_io *)anfds [fd].head)) |
302 |
root |
1.41 |
{ |
303 |
root |
1.51 |
ev_io_stop (EV_A_ w); |
304 |
|
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event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
305 |
root |
1.41 |
} |
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 |
1.51 |
fd_ebadf (EV_P) |
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 |
1.51 |
fd_kill (EV_A_ fd); |
318 |
root |
1.41 |
} |
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 |
root |
1.51 |
fd_enomem (EV_P) |
323 |
root |
1.41 |
{ |
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 |
root |
1.51 |
fd_kill (EV_A_ fd); |
331 |
root |
1.41 |
return; |
332 |
|
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} |
333 |
root |
1.19 |
} |
334 |
|
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|
335 |
root |
1.8 |
/*****************************************************************************/ |
336 |
|
|
|
337 |
root |
1.1 |
static void |
338 |
root |
1.12 |
upheap (WT *timers, int k) |
339 |
root |
1.1 |
{ |
340 |
root |
1.12 |
WT w = timers [k]; |
341 |
root |
1.1 |
|
342 |
|
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while (k && timers [k >> 1]->at > w->at) |
343 |
|
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{ |
344 |
|
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timers [k] = timers [k >> 1]; |
345 |
|
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timers [k]->active = k + 1; |
346 |
|
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k >>= 1; |
347 |
|
|
} |
348 |
|
|
|
349 |
|
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timers [k] = w; |
350 |
|
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timers [k]->active = k + 1; |
351 |
|
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|
352 |
|
|
} |
353 |
|
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|
354 |
|
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static void |
355 |
root |
1.12 |
downheap (WT *timers, int N, int k) |
356 |
root |
1.1 |
{ |
357 |
root |
1.12 |
WT w = timers [k]; |
358 |
root |
1.1 |
|
359 |
root |
1.4 |
while (k < (N >> 1)) |
360 |
root |
1.1 |
{ |
361 |
|
|
int j = k << 1; |
362 |
|
|
|
363 |
root |
1.4 |
if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
364 |
root |
1.1 |
++j; |
365 |
|
|
|
366 |
|
|
if (w->at <= timers [j]->at) |
367 |
|
|
break; |
368 |
|
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|
369 |
|
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timers [k] = timers [j]; |
370 |
root |
1.2 |
timers [k]->active = k + 1; |
371 |
root |
1.1 |
k = j; |
372 |
|
|
} |
373 |
|
|
|
374 |
|
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timers [k] = w; |
375 |
|
|
timers [k]->active = k + 1; |
376 |
|
|
} |
377 |
|
|
|
378 |
root |
1.8 |
/*****************************************************************************/ |
379 |
|
|
|
380 |
root |
1.7 |
typedef struct |
381 |
|
|
{ |
382 |
root |
1.50 |
struct ev_watcher_list *head; |
383 |
root |
1.34 |
sig_atomic_t volatile gotsig; |
384 |
root |
1.7 |
} ANSIG; |
385 |
|
|
|
386 |
|
|
static ANSIG *signals; |
387 |
root |
1.4 |
static int signalmax; |
388 |
root |
1.1 |
|
389 |
root |
1.7 |
static int sigpipe [2]; |
390 |
root |
1.34 |
static sig_atomic_t volatile gotsig; |
391 |
root |
1.7 |
|
392 |
root |
1.1 |
static void |
393 |
root |
1.7 |
signals_init (ANSIG *base, int count) |
394 |
root |
1.1 |
{ |
395 |
|
|
while (count--) |
396 |
root |
1.7 |
{ |
397 |
|
|
base->head = 0; |
398 |
|
|
base->gotsig = 0; |
399 |
root |
1.33 |
|
400 |
root |
1.7 |
++base; |
401 |
|
|
} |
402 |
|
|
} |
403 |
|
|
|
404 |
|
|
static void |
405 |
|
|
sighandler (int signum) |
406 |
|
|
{ |
407 |
|
|
signals [signum - 1].gotsig = 1; |
408 |
|
|
|
409 |
|
|
if (!gotsig) |
410 |
|
|
{ |
411 |
root |
1.48 |
int old_errno = errno; |
412 |
root |
1.7 |
gotsig = 1; |
413 |
root |
1.34 |
write (sigpipe [1], &signum, 1); |
414 |
root |
1.48 |
errno = old_errno; |
415 |
root |
1.7 |
} |
416 |
|
|
} |
417 |
|
|
|
418 |
|
|
static void |
419 |
root |
1.51 |
sigcb (EV_P_ struct ev_io *iow, int revents) |
420 |
root |
1.7 |
{ |
421 |
root |
1.50 |
struct ev_watcher_list *w; |
422 |
root |
1.38 |
int signum; |
423 |
root |
1.7 |
|
424 |
root |
1.34 |
read (sigpipe [0], &revents, 1); |
425 |
root |
1.7 |
gotsig = 0; |
426 |
|
|
|
427 |
root |
1.38 |
for (signum = signalmax; signum--; ) |
428 |
|
|
if (signals [signum].gotsig) |
429 |
root |
1.7 |
{ |
430 |
root |
1.38 |
signals [signum].gotsig = 0; |
431 |
root |
1.7 |
|
432 |
root |
1.38 |
for (w = signals [signum].head; w; w = w->next) |
433 |
root |
1.51 |
event (EV_A_ (W)w, EV_SIGNAL); |
434 |
root |
1.7 |
} |
435 |
|
|
} |
436 |
|
|
|
437 |
|
|
static void |
438 |
root |
1.51 |
siginit (EV_P) |
439 |
root |
1.7 |
{ |
440 |
root |
1.45 |
#ifndef WIN32 |
441 |
root |
1.7 |
fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
442 |
|
|
fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
443 |
|
|
|
444 |
|
|
/* rather than sort out wether we really need nb, set it */ |
445 |
|
|
fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
446 |
|
|
fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
447 |
root |
1.45 |
#endif |
448 |
root |
1.7 |
|
449 |
root |
1.28 |
ev_io_set (&sigev, sigpipe [0], EV_READ); |
450 |
|
|
ev_io_start (&sigev); |
451 |
root |
1.52 |
ev_unref (EV_A); /* child watcher should not keep loop alive */ |
452 |
root |
1.1 |
} |
453 |
|
|
|
454 |
root |
1.8 |
/*****************************************************************************/ |
455 |
|
|
|
456 |
root |
1.45 |
#ifndef WIN32 |
457 |
|
|
|
458 |
root |
1.22 |
#ifndef WCONTINUED |
459 |
|
|
# define WCONTINUED 0 |
460 |
|
|
#endif |
461 |
|
|
|
462 |
|
|
static void |
463 |
root |
1.51 |
child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
464 |
root |
1.47 |
{ |
465 |
|
|
struct ev_child *w; |
466 |
|
|
|
467 |
root |
1.50 |
for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
468 |
root |
1.47 |
if (w->pid == pid || !w->pid) |
469 |
|
|
{ |
470 |
|
|
w->priority = sw->priority; /* need to do it *now* */ |
471 |
|
|
w->rpid = pid; |
472 |
|
|
w->rstatus = status; |
473 |
root |
1.51 |
event (EV_A_ (W)w, EV_CHILD); |
474 |
root |
1.47 |
} |
475 |
|
|
} |
476 |
|
|
|
477 |
|
|
static void |
478 |
root |
1.51 |
childcb (EV_P_ struct ev_signal *sw, int revents) |
479 |
root |
1.22 |
{ |
480 |
|
|
int pid, status; |
481 |
|
|
|
482 |
root |
1.47 |
if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
483 |
|
|
{ |
484 |
|
|
/* make sure we are called again until all childs have been reaped */ |
485 |
root |
1.51 |
event (EV_A_ (W)sw, EV_SIGNAL); |
486 |
root |
1.47 |
|
487 |
root |
1.51 |
child_reap (EV_A_ sw, pid, pid, status); |
488 |
|
|
child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
489 |
root |
1.47 |
} |
490 |
root |
1.22 |
} |
491 |
|
|
|
492 |
root |
1.45 |
#endif |
493 |
|
|
|
494 |
root |
1.22 |
/*****************************************************************************/ |
495 |
|
|
|
496 |
root |
1.44 |
#if EV_USE_KQUEUE |
497 |
|
|
# include "ev_kqueue.c" |
498 |
|
|
#endif |
499 |
root |
1.29 |
#if EV_USE_EPOLL |
500 |
root |
1.1 |
# include "ev_epoll.c" |
501 |
|
|
#endif |
502 |
root |
1.51 |
#if EV_USEV_POLL |
503 |
root |
1.41 |
# include "ev_poll.c" |
504 |
|
|
#endif |
505 |
root |
1.29 |
#if EV_USE_SELECT |
506 |
root |
1.1 |
# include "ev_select.c" |
507 |
|
|
#endif |
508 |
|
|
|
509 |
root |
1.24 |
int |
510 |
|
|
ev_version_major (void) |
511 |
|
|
{ |
512 |
|
|
return EV_VERSION_MAJOR; |
513 |
|
|
} |
514 |
|
|
|
515 |
|
|
int |
516 |
|
|
ev_version_minor (void) |
517 |
|
|
{ |
518 |
|
|
return EV_VERSION_MINOR; |
519 |
|
|
} |
520 |
|
|
|
521 |
root |
1.49 |
/* return true if we are running with elevated privileges and should ignore env variables */ |
522 |
root |
1.41 |
static int |
523 |
root |
1.51 |
enable_secure (void) |
524 |
root |
1.41 |
{ |
525 |
root |
1.49 |
#ifdef WIN32 |
526 |
|
|
return 0; |
527 |
|
|
#else |
528 |
root |
1.41 |
return getuid () != geteuid () |
529 |
|
|
|| getgid () != getegid (); |
530 |
root |
1.49 |
#endif |
531 |
root |
1.41 |
} |
532 |
|
|
|
533 |
root |
1.51 |
int |
534 |
|
|
ev_method (EV_P) |
535 |
root |
1.1 |
{ |
536 |
root |
1.51 |
return method; |
537 |
|
|
} |
538 |
|
|
|
539 |
|
|
int |
540 |
|
|
ev_init (EV_P_ int methods) |
541 |
|
|
{ |
542 |
root |
1.53 |
#ifdef EV_MULTIPLICITY |
543 |
|
|
memset (loop, 0, sizeof (struct ev_loop)); |
544 |
|
|
#endif |
545 |
|
|
|
546 |
root |
1.51 |
if (!method) |
547 |
root |
1.23 |
{ |
548 |
root |
1.29 |
#if EV_USE_MONOTONIC |
549 |
root |
1.23 |
{ |
550 |
|
|
struct timespec ts; |
551 |
|
|
if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
552 |
|
|
have_monotonic = 1; |
553 |
|
|
} |
554 |
root |
1.1 |
#endif |
555 |
|
|
|
556 |
root |
1.51 |
rt_now = ev_time (); |
557 |
|
|
mn_now = get_clock (); |
558 |
|
|
now_floor = mn_now; |
559 |
|
|
diff = rt_now - mn_now; |
560 |
root |
1.1 |
|
561 |
root |
1.23 |
if (pipe (sigpipe)) |
562 |
|
|
return 0; |
563 |
root |
1.7 |
|
564 |
root |
1.41 |
if (methods == EVMETHOD_AUTO) |
565 |
root |
1.51 |
if (!enable_secure () && getenv ("LIBmethodS")) |
566 |
|
|
methods = atoi (getenv ("LIBmethodS")); |
567 |
root |
1.50 |
else |
568 |
|
|
methods = EVMETHOD_ANY; |
569 |
root |
1.41 |
|
570 |
root |
1.51 |
method = 0; |
571 |
root |
1.44 |
#if EV_USE_KQUEUE |
572 |
root |
1.51 |
if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
573 |
root |
1.44 |
#endif |
574 |
root |
1.29 |
#if EV_USE_EPOLL |
575 |
root |
1.51 |
if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
576 |
root |
1.41 |
#endif |
577 |
root |
1.51 |
#if EV_USEV_POLL |
578 |
|
|
if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
579 |
root |
1.1 |
#endif |
580 |
root |
1.29 |
#if EV_USE_SELECT |
581 |
root |
1.51 |
if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
582 |
root |
1.1 |
#endif |
583 |
|
|
|
584 |
root |
1.51 |
if (method) |
585 |
root |
1.23 |
{ |
586 |
root |
1.28 |
ev_watcher_init (&sigev, sigcb); |
587 |
root |
1.47 |
ev_set_priority (&sigev, EV_MAXPRI); |
588 |
root |
1.51 |
siginit (EV_A); |
589 |
root |
1.22 |
|
590 |
root |
1.45 |
#ifndef WIN32 |
591 |
root |
1.28 |
ev_signal_init (&childev, childcb, SIGCHLD); |
592 |
root |
1.47 |
ev_set_priority (&childev, EV_MAXPRI); |
593 |
root |
1.51 |
ev_signal_start (EV_A_ &childev); |
594 |
root |
1.52 |
ev_unref (EV_A); /* child watcher should not keep loop alive */ |
595 |
root |
1.45 |
#endif |
596 |
root |
1.23 |
} |
597 |
root |
1.7 |
} |
598 |
|
|
|
599 |
root |
1.51 |
return method; |
600 |
root |
1.1 |
} |
601 |
|
|
|
602 |
root |
1.8 |
/*****************************************************************************/ |
603 |
|
|
|
604 |
root |
1.24 |
void |
605 |
root |
1.35 |
ev_fork_prepare (void) |
606 |
root |
1.1 |
{ |
607 |
root |
1.11 |
/* nop */ |
608 |
root |
1.1 |
} |
609 |
|
|
|
610 |
root |
1.24 |
void |
611 |
root |
1.35 |
ev_fork_parent (void) |
612 |
root |
1.1 |
{ |
613 |
root |
1.11 |
/* nop */ |
614 |
root |
1.1 |
} |
615 |
|
|
|
616 |
root |
1.24 |
void |
617 |
root |
1.35 |
ev_fork_child (void) |
618 |
root |
1.1 |
{ |
619 |
root |
1.29 |
#if EV_USE_EPOLL |
620 |
root |
1.51 |
if (method == EVMETHOD_EPOLL) |
621 |
root |
1.5 |
epoll_postfork_child (); |
622 |
root |
1.1 |
#endif |
623 |
root |
1.7 |
|
624 |
root |
1.28 |
ev_io_stop (&sigev); |
625 |
root |
1.7 |
close (sigpipe [0]); |
626 |
|
|
close (sigpipe [1]); |
627 |
|
|
pipe (sigpipe); |
628 |
|
|
siginit (); |
629 |
root |
1.1 |
} |
630 |
|
|
|
631 |
root |
1.8 |
/*****************************************************************************/ |
632 |
|
|
|
633 |
root |
1.1 |
static void |
634 |
root |
1.51 |
call_pending (EV_P) |
635 |
root |
1.1 |
{ |
636 |
root |
1.42 |
int pri; |
637 |
|
|
|
638 |
|
|
for (pri = NUMPRI; pri--; ) |
639 |
|
|
while (pendingcnt [pri]) |
640 |
|
|
{ |
641 |
|
|
ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
642 |
root |
1.1 |
|
643 |
root |
1.42 |
if (p->w) |
644 |
|
|
{ |
645 |
|
|
p->w->pending = 0; |
646 |
root |
1.51 |
p->w->cb (EV_A_ p->w, p->events); |
647 |
root |
1.42 |
} |
648 |
|
|
} |
649 |
root |
1.1 |
} |
650 |
|
|
|
651 |
|
|
static void |
652 |
root |
1.51 |
timers_reify (EV_P) |
653 |
root |
1.1 |
{ |
654 |
root |
1.51 |
while (timercnt && timers [0]->at <= mn_now) |
655 |
root |
1.1 |
{ |
656 |
|
|
struct ev_timer *w = timers [0]; |
657 |
|
|
|
658 |
root |
1.4 |
/* first reschedule or stop timer */ |
659 |
root |
1.1 |
if (w->repeat) |
660 |
|
|
{ |
661 |
root |
1.33 |
assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
662 |
root |
1.51 |
w->at = mn_now + w->repeat; |
663 |
root |
1.12 |
downheap ((WT *)timers, timercnt, 0); |
664 |
|
|
} |
665 |
|
|
else |
666 |
root |
1.51 |
ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
667 |
root |
1.30 |
|
668 |
|
|
event ((W)w, EV_TIMEOUT); |
669 |
root |
1.12 |
} |
670 |
|
|
} |
671 |
root |
1.4 |
|
672 |
root |
1.12 |
static void |
673 |
root |
1.51 |
periodics_reify (EV_P) |
674 |
root |
1.12 |
{ |
675 |
root |
1.51 |
while (periodiccnt && periodics [0]->at <= rt_now) |
676 |
root |
1.12 |
{ |
677 |
|
|
struct ev_periodic *w = periodics [0]; |
678 |
root |
1.1 |
|
679 |
root |
1.12 |
/* first reschedule or stop timer */ |
680 |
|
|
if (w->interval) |
681 |
|
|
{ |
682 |
root |
1.51 |
w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; |
683 |
|
|
assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); |
684 |
root |
1.12 |
downheap ((WT *)periodics, periodiccnt, 0); |
685 |
root |
1.1 |
} |
686 |
|
|
else |
687 |
root |
1.51 |
ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
688 |
root |
1.12 |
|
689 |
root |
1.51 |
event (EV_A_ (W)w, EV_PERIODIC); |
690 |
root |
1.12 |
} |
691 |
|
|
} |
692 |
|
|
|
693 |
|
|
static void |
694 |
root |
1.51 |
periodics_reschedule (EV_P_ ev_tstamp diff) |
695 |
root |
1.12 |
{ |
696 |
|
|
int i; |
697 |
|
|
|
698 |
root |
1.13 |
/* adjust periodics after time jump */ |
699 |
root |
1.12 |
for (i = 0; i < periodiccnt; ++i) |
700 |
|
|
{ |
701 |
|
|
struct ev_periodic *w = periodics [i]; |
702 |
|
|
|
703 |
|
|
if (w->interval) |
704 |
root |
1.4 |
{ |
705 |
root |
1.51 |
ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; |
706 |
root |
1.12 |
|
707 |
|
|
if (fabs (diff) >= 1e-4) |
708 |
|
|
{ |
709 |
root |
1.51 |
ev_periodic_stop (EV_A_ w); |
710 |
|
|
ev_periodic_start (EV_A_ w); |
711 |
root |
1.12 |
|
712 |
|
|
i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
713 |
|
|
} |
714 |
root |
1.4 |
} |
715 |
root |
1.12 |
} |
716 |
root |
1.1 |
} |
717 |
|
|
|
718 |
root |
1.51 |
inline int |
719 |
|
|
time_update_monotonic (EV_P) |
720 |
root |
1.40 |
{ |
721 |
root |
1.51 |
mn_now = get_clock (); |
722 |
root |
1.40 |
|
723 |
root |
1.51 |
if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
724 |
root |
1.40 |
{ |
725 |
root |
1.51 |
rt_now = mn_now + diff; |
726 |
root |
1.40 |
return 0; |
727 |
|
|
} |
728 |
|
|
else |
729 |
|
|
{ |
730 |
root |
1.51 |
now_floor = mn_now; |
731 |
|
|
rt_now = ev_time (); |
732 |
root |
1.40 |
return 1; |
733 |
|
|
} |
734 |
|
|
} |
735 |
|
|
|
736 |
root |
1.4 |
static void |
737 |
root |
1.51 |
time_update (EV_P) |
738 |
root |
1.4 |
{ |
739 |
|
|
int i; |
740 |
root |
1.12 |
|
741 |
root |
1.40 |
#if EV_USE_MONOTONIC |
742 |
|
|
if (expect_true (have_monotonic)) |
743 |
|
|
{ |
744 |
root |
1.51 |
if (time_update_monotonic (EV_A)) |
745 |
root |
1.40 |
{ |
746 |
|
|
ev_tstamp odiff = diff; |
747 |
root |
1.4 |
|
748 |
root |
1.40 |
for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
749 |
|
|
{ |
750 |
root |
1.51 |
diff = rt_now - mn_now; |
751 |
root |
1.4 |
|
752 |
root |
1.40 |
if (fabs (odiff - diff) < MIN_TIMEJUMP) |
753 |
|
|
return; /* all is well */ |
754 |
root |
1.4 |
|
755 |
root |
1.51 |
rt_now = ev_time (); |
756 |
|
|
mn_now = get_clock (); |
757 |
|
|
now_floor = mn_now; |
758 |
root |
1.40 |
} |
759 |
root |
1.4 |
|
760 |
root |
1.51 |
periodics_reschedule (EV_A_ diff - odiff); |
761 |
root |
1.40 |
/* no timer adjustment, as the monotonic clock doesn't jump */ |
762 |
root |
1.4 |
} |
763 |
|
|
} |
764 |
|
|
else |
765 |
root |
1.40 |
#endif |
766 |
root |
1.4 |
{ |
767 |
root |
1.51 |
rt_now = ev_time (); |
768 |
root |
1.40 |
|
769 |
root |
1.51 |
if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
770 |
root |
1.13 |
{ |
771 |
root |
1.51 |
periodics_reschedule (EV_A_ rt_now - mn_now); |
772 |
root |
1.13 |
|
773 |
|
|
/* adjust timers. this is easy, as the offset is the same for all */ |
774 |
|
|
for (i = 0; i < timercnt; ++i) |
775 |
|
|
timers [i]->at += diff; |
776 |
|
|
} |
777 |
root |
1.4 |
|
778 |
root |
1.51 |
mn_now = rt_now; |
779 |
root |
1.4 |
} |
780 |
|
|
} |
781 |
|
|
|
782 |
root |
1.51 |
void |
783 |
|
|
ev_ref (EV_P) |
784 |
|
|
{ |
785 |
|
|
++activecnt; |
786 |
|
|
} |
787 |
root |
1.1 |
|
788 |
root |
1.51 |
void |
789 |
|
|
ev_unref (EV_P) |
790 |
|
|
{ |
791 |
|
|
--activecnt; |
792 |
|
|
} |
793 |
|
|
|
794 |
|
|
static int loop_done; |
795 |
|
|
|
796 |
|
|
void |
797 |
|
|
ev_loop (EV_P_ int flags) |
798 |
root |
1.1 |
{ |
799 |
|
|
double block; |
800 |
root |
1.51 |
loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
801 |
root |
1.1 |
|
802 |
root |
1.20 |
do |
803 |
root |
1.9 |
{ |
804 |
root |
1.20 |
/* queue check watchers (and execute them) */ |
805 |
root |
1.40 |
if (expect_false (preparecnt)) |
806 |
root |
1.20 |
{ |
807 |
root |
1.51 |
queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
808 |
|
|
call_pending (EV_A); |
809 |
root |
1.20 |
} |
810 |
root |
1.9 |
|
811 |
root |
1.1 |
/* update fd-related kernel structures */ |
812 |
root |
1.51 |
fd_reify (EV_A); |
813 |
root |
1.1 |
|
814 |
|
|
/* calculate blocking time */ |
815 |
root |
1.12 |
|
816 |
root |
1.21 |
/* we only need this for !monotonic clockor timers, but as we basically |
817 |
|
|
always have timers, we just calculate it always */ |
818 |
root |
1.40 |
#if EV_USE_MONOTONIC |
819 |
|
|
if (expect_true (have_monotonic)) |
820 |
root |
1.51 |
time_update_monotonic (EV_A); |
821 |
root |
1.40 |
else |
822 |
|
|
#endif |
823 |
|
|
{ |
824 |
root |
1.51 |
rt_now = ev_time (); |
825 |
|
|
mn_now = rt_now; |
826 |
root |
1.40 |
} |
827 |
root |
1.12 |
|
828 |
root |
1.9 |
if (flags & EVLOOP_NONBLOCK || idlecnt) |
829 |
root |
1.1 |
block = 0.; |
830 |
|
|
else |
831 |
|
|
{ |
832 |
root |
1.4 |
block = MAX_BLOCKTIME; |
833 |
|
|
|
834 |
root |
1.12 |
if (timercnt) |
835 |
root |
1.4 |
{ |
836 |
root |
1.51 |
ev_tstamp to = timers [0]->at - mn_now + method_fudge; |
837 |
root |
1.4 |
if (block > to) block = to; |
838 |
|
|
} |
839 |
|
|
|
840 |
root |
1.12 |
if (periodiccnt) |
841 |
root |
1.4 |
{ |
842 |
root |
1.51 |
ev_tstamp to = periodics [0]->at - rt_now + method_fudge; |
843 |
root |
1.4 |
if (block > to) block = to; |
844 |
|
|
} |
845 |
|
|
|
846 |
root |
1.1 |
if (block < 0.) block = 0.; |
847 |
|
|
} |
848 |
|
|
|
849 |
root |
1.51 |
method_poll (EV_A_ block); |
850 |
root |
1.1 |
|
851 |
root |
1.51 |
/* update rt_now, do magic */ |
852 |
|
|
time_update (EV_A); |
853 |
root |
1.4 |
|
854 |
root |
1.9 |
/* queue pending timers and reschedule them */ |
855 |
root |
1.51 |
timers_reify (EV_A); /* relative timers called last */ |
856 |
|
|
periodics_reify (EV_A); /* absolute timers called first */ |
857 |
root |
1.1 |
|
858 |
root |
1.9 |
/* queue idle watchers unless io or timers are pending */ |
859 |
|
|
if (!pendingcnt) |
860 |
root |
1.51 |
queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
861 |
root |
1.9 |
|
862 |
root |
1.20 |
/* queue check watchers, to be executed first */ |
863 |
|
|
if (checkcnt) |
864 |
root |
1.51 |
queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
865 |
root |
1.9 |
|
866 |
root |
1.51 |
call_pending (EV_A); |
867 |
root |
1.1 |
} |
868 |
root |
1.51 |
while (activecnt && !loop_done); |
869 |
root |
1.13 |
|
870 |
root |
1.51 |
if (loop_done != 2) |
871 |
|
|
loop_done = 0; |
872 |
|
|
} |
873 |
|
|
|
874 |
|
|
void |
875 |
|
|
ev_unloop (EV_P_ int how) |
876 |
|
|
{ |
877 |
|
|
loop_done = how; |
878 |
root |
1.1 |
} |
879 |
|
|
|
880 |
root |
1.8 |
/*****************************************************************************/ |
881 |
|
|
|
882 |
root |
1.51 |
inline void |
883 |
root |
1.10 |
wlist_add (WL *head, WL elem) |
884 |
root |
1.1 |
{ |
885 |
|
|
elem->next = *head; |
886 |
|
|
*head = elem; |
887 |
|
|
} |
888 |
|
|
|
889 |
root |
1.51 |
inline void |
890 |
root |
1.10 |
wlist_del (WL *head, WL elem) |
891 |
root |
1.1 |
{ |
892 |
|
|
while (*head) |
893 |
|
|
{ |
894 |
|
|
if (*head == elem) |
895 |
|
|
{ |
896 |
|
|
*head = elem->next; |
897 |
|
|
return; |
898 |
|
|
} |
899 |
|
|
|
900 |
|
|
head = &(*head)->next; |
901 |
|
|
} |
902 |
|
|
} |
903 |
|
|
|
904 |
root |
1.51 |
inline void |
905 |
|
|
ev_clear_pending (EV_P_ W w) |
906 |
root |
1.16 |
{ |
907 |
|
|
if (w->pending) |
908 |
|
|
{ |
909 |
root |
1.42 |
pendings [ABSPRI (w)][w->pending - 1].w = 0; |
910 |
root |
1.16 |
w->pending = 0; |
911 |
|
|
} |
912 |
|
|
} |
913 |
|
|
|
914 |
root |
1.51 |
inline void |
915 |
|
|
ev_start (EV_P_ W w, int active) |
916 |
root |
1.1 |
{ |
917 |
root |
1.43 |
if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
918 |
|
|
if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
919 |
|
|
|
920 |
root |
1.1 |
w->active = active; |
921 |
root |
1.51 |
ev_ref (EV_A); |
922 |
root |
1.1 |
} |
923 |
|
|
|
924 |
root |
1.51 |
inline void |
925 |
|
|
ev_stop (EV_P_ W w) |
926 |
root |
1.1 |
{ |
927 |
root |
1.51 |
ev_unref (EV_A); |
928 |
root |
1.1 |
w->active = 0; |
929 |
|
|
} |
930 |
|
|
|
931 |
root |
1.8 |
/*****************************************************************************/ |
932 |
|
|
|
933 |
root |
1.1 |
void |
934 |
root |
1.51 |
ev_io_start (EV_P_ struct ev_io *w) |
935 |
root |
1.1 |
{ |
936 |
root |
1.37 |
int fd = w->fd; |
937 |
|
|
|
938 |
root |
1.1 |
if (ev_is_active (w)) |
939 |
|
|
return; |
940 |
|
|
|
941 |
root |
1.33 |
assert (("ev_io_start called with negative fd", fd >= 0)); |
942 |
|
|
|
943 |
root |
1.51 |
ev_start (EV_A_ (W)w, 1); |
944 |
root |
1.1 |
array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
945 |
root |
1.10 |
wlist_add ((WL *)&anfds[fd].head, (WL)w); |
946 |
root |
1.1 |
|
947 |
root |
1.51 |
fd_change (EV_A_ fd); |
948 |
root |
1.1 |
} |
949 |
|
|
|
950 |
|
|
void |
951 |
root |
1.51 |
ev_io_stop (EV_P_ struct ev_io *w) |
952 |
root |
1.1 |
{ |
953 |
root |
1.51 |
ev_clear_pending (EV_A_ (W)w); |
954 |
root |
1.1 |
if (!ev_is_active (w)) |
955 |
|
|
return; |
956 |
|
|
|
957 |
root |
1.10 |
wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
958 |
root |
1.51 |
ev_stop (EV_A_ (W)w); |
959 |
root |
1.1 |
|
960 |
root |
1.51 |
fd_change (EV_A_ w->fd); |
961 |
root |
1.1 |
} |
962 |
|
|
|
963 |
|
|
void |
964 |
root |
1.51 |
ev_timer_start (EV_P_ struct ev_timer *w) |
965 |
root |
1.1 |
{ |
966 |
|
|
if (ev_is_active (w)) |
967 |
|
|
return; |
968 |
|
|
|
969 |
root |
1.51 |
w->at += mn_now; |
970 |
root |
1.12 |
|
971 |
root |
1.33 |
assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
972 |
root |
1.13 |
|
973 |
root |
1.51 |
ev_start (EV_A_ (W)w, ++timercnt); |
974 |
root |
1.12 |
array_needsize (timers, timermax, timercnt, ); |
975 |
|
|
timers [timercnt - 1] = w; |
976 |
|
|
upheap ((WT *)timers, timercnt - 1); |
977 |
|
|
} |
978 |
|
|
|
979 |
|
|
void |
980 |
root |
1.51 |
ev_timer_stop (EV_P_ struct ev_timer *w) |
981 |
root |
1.12 |
{ |
982 |
root |
1.51 |
ev_clear_pending (EV_A_ (W)w); |
983 |
root |
1.12 |
if (!ev_is_active (w)) |
984 |
|
|
return; |
985 |
|
|
|
986 |
|
|
if (w->active < timercnt--) |
987 |
root |
1.1 |
{ |
988 |
root |
1.12 |
timers [w->active - 1] = timers [timercnt]; |
989 |
|
|
downheap ((WT *)timers, timercnt, w->active - 1); |
990 |
|
|
} |
991 |
root |
1.4 |
|
992 |
root |
1.14 |
w->at = w->repeat; |
993 |
|
|
|
994 |
root |
1.51 |
ev_stop (EV_A_ (W)w); |
995 |
root |
1.12 |
} |
996 |
root |
1.4 |
|
997 |
root |
1.12 |
void |
998 |
root |
1.51 |
ev_timer_again (EV_P_ struct ev_timer *w) |
999 |
root |
1.14 |
{ |
1000 |
|
|
if (ev_is_active (w)) |
1001 |
|
|
{ |
1002 |
|
|
if (w->repeat) |
1003 |
|
|
{ |
1004 |
root |
1.51 |
w->at = mn_now + w->repeat; |
1005 |
root |
1.14 |
downheap ((WT *)timers, timercnt, w->active - 1); |
1006 |
|
|
} |
1007 |
|
|
else |
1008 |
root |
1.51 |
ev_timer_stop (EV_A_ w); |
1009 |
root |
1.14 |
} |
1010 |
|
|
else if (w->repeat) |
1011 |
root |
1.51 |
ev_timer_start (EV_A_ w); |
1012 |
root |
1.14 |
} |
1013 |
|
|
|
1014 |
|
|
void |
1015 |
root |
1.51 |
ev_periodic_start (EV_P_ struct ev_periodic *w) |
1016 |
root |
1.12 |
{ |
1017 |
|
|
if (ev_is_active (w)) |
1018 |
|
|
return; |
1019 |
root |
1.1 |
|
1020 |
root |
1.33 |
assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1021 |
root |
1.13 |
|
1022 |
root |
1.12 |
/* this formula differs from the one in periodic_reify because we do not always round up */ |
1023 |
|
|
if (w->interval) |
1024 |
root |
1.51 |
w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; |
1025 |
root |
1.12 |
|
1026 |
root |
1.51 |
ev_start (EV_A_ (W)w, ++periodiccnt); |
1027 |
root |
1.12 |
array_needsize (periodics, periodicmax, periodiccnt, ); |
1028 |
|
|
periodics [periodiccnt - 1] = w; |
1029 |
|
|
upheap ((WT *)periodics, periodiccnt - 1); |
1030 |
root |
1.1 |
} |
1031 |
|
|
|
1032 |
|
|
void |
1033 |
root |
1.51 |
ev_periodic_stop (EV_P_ struct ev_periodic *w) |
1034 |
root |
1.1 |
{ |
1035 |
root |
1.51 |
ev_clear_pending (EV_A_ (W)w); |
1036 |
root |
1.1 |
if (!ev_is_active (w)) |
1037 |
|
|
return; |
1038 |
|
|
|
1039 |
root |
1.12 |
if (w->active < periodiccnt--) |
1040 |
root |
1.2 |
{ |
1041 |
root |
1.12 |
periodics [w->active - 1] = periodics [periodiccnt]; |
1042 |
|
|
downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1043 |
root |
1.2 |
} |
1044 |
|
|
|
1045 |
root |
1.51 |
ev_stop (EV_A_ (W)w); |
1046 |
root |
1.1 |
} |
1047 |
|
|
|
1048 |
root |
1.47 |
#ifndef SA_RESTART |
1049 |
|
|
# define SA_RESTART 0 |
1050 |
|
|
#endif |
1051 |
|
|
|
1052 |
root |
1.1 |
void |
1053 |
root |
1.51 |
ev_signal_start (EV_P_ struct ev_signal *w) |
1054 |
root |
1.1 |
{ |
1055 |
|
|
if (ev_is_active (w)) |
1056 |
|
|
return; |
1057 |
|
|
|
1058 |
root |
1.33 |
assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1059 |
|
|
|
1060 |
root |
1.51 |
ev_start (EV_A_ (W)w, 1); |
1061 |
root |
1.1 |
array_needsize (signals, signalmax, w->signum, signals_init); |
1062 |
root |
1.10 |
wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1063 |
root |
1.7 |
|
1064 |
|
|
if (!w->next) |
1065 |
|
|
{ |
1066 |
|
|
struct sigaction sa; |
1067 |
|
|
sa.sa_handler = sighandler; |
1068 |
|
|
sigfillset (&sa.sa_mask); |
1069 |
root |
1.47 |
sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1070 |
root |
1.7 |
sigaction (w->signum, &sa, 0); |
1071 |
|
|
} |
1072 |
root |
1.1 |
} |
1073 |
|
|
|
1074 |
|
|
void |
1075 |
root |
1.51 |
ev_signal_stop (EV_P_ struct ev_signal *w) |
1076 |
root |
1.1 |
{ |
1077 |
root |
1.51 |
ev_clear_pending (EV_A_ (W)w); |
1078 |
root |
1.1 |
if (!ev_is_active (w)) |
1079 |
|
|
return; |
1080 |
|
|
|
1081 |
root |
1.10 |
wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1082 |
root |
1.51 |
ev_stop (EV_A_ (W)w); |
1083 |
root |
1.7 |
|
1084 |
|
|
if (!signals [w->signum - 1].head) |
1085 |
|
|
signal (w->signum, SIG_DFL); |
1086 |
root |
1.1 |
} |
1087 |
|
|
|
1088 |
root |
1.28 |
void |
1089 |
root |
1.51 |
ev_idle_start (EV_P_ struct ev_idle *w) |
1090 |
root |
1.9 |
{ |
1091 |
|
|
if (ev_is_active (w)) |
1092 |
|
|
return; |
1093 |
|
|
|
1094 |
root |
1.51 |
ev_start (EV_A_ (W)w, ++idlecnt); |
1095 |
root |
1.9 |
array_needsize (idles, idlemax, idlecnt, ); |
1096 |
|
|
idles [idlecnt - 1] = w; |
1097 |
|
|
} |
1098 |
|
|
|
1099 |
root |
1.28 |
void |
1100 |
root |
1.51 |
ev_idle_stop (EV_P_ struct ev_idle *w) |
1101 |
root |
1.9 |
{ |
1102 |
root |
1.51 |
ev_clear_pending (EV_A_ (W)w); |
1103 |
root |
1.16 |
if (ev_is_active (w)) |
1104 |
|
|
return; |
1105 |
|
|
|
1106 |
root |
1.9 |
idles [w->active - 1] = idles [--idlecnt]; |
1107 |
root |
1.51 |
ev_stop (EV_A_ (W)w); |
1108 |
root |
1.9 |
} |
1109 |
|
|
|
1110 |
root |
1.28 |
void |
1111 |
root |
1.51 |
ev_prepare_start (EV_P_ struct ev_prepare *w) |
1112 |
root |
1.20 |
{ |
1113 |
|
|
if (ev_is_active (w)) |
1114 |
|
|
return; |
1115 |
|
|
|
1116 |
root |
1.51 |
ev_start (EV_A_ (W)w, ++preparecnt); |
1117 |
root |
1.20 |
array_needsize (prepares, preparemax, preparecnt, ); |
1118 |
|
|
prepares [preparecnt - 1] = w; |
1119 |
|
|
} |
1120 |
|
|
|
1121 |
root |
1.28 |
void |
1122 |
root |
1.51 |
ev_prepare_stop (EV_P_ struct ev_prepare *w) |
1123 |
root |
1.20 |
{ |
1124 |
root |
1.51 |
ev_clear_pending (EV_A_ (W)w); |
1125 |
root |
1.20 |
if (ev_is_active (w)) |
1126 |
|
|
return; |
1127 |
|
|
|
1128 |
|
|
prepares [w->active - 1] = prepares [--preparecnt]; |
1129 |
root |
1.51 |
ev_stop (EV_A_ (W)w); |
1130 |
root |
1.20 |
} |
1131 |
|
|
|
1132 |
root |
1.28 |
void |
1133 |
root |
1.51 |
ev_check_start (EV_P_ struct ev_check *w) |
1134 |
root |
1.9 |
{ |
1135 |
|
|
if (ev_is_active (w)) |
1136 |
|
|
return; |
1137 |
|
|
|
1138 |
root |
1.51 |
ev_start (EV_A_ (W)w, ++checkcnt); |
1139 |
root |
1.9 |
array_needsize (checks, checkmax, checkcnt, ); |
1140 |
|
|
checks [checkcnt - 1] = w; |
1141 |
|
|
} |
1142 |
|
|
|
1143 |
root |
1.28 |
void |
1144 |
root |
1.51 |
ev_check_stop (EV_P_ struct ev_check *w) |
1145 |
root |
1.9 |
{ |
1146 |
root |
1.51 |
ev_clear_pending (EV_A_ (W)w); |
1147 |
root |
1.16 |
if (ev_is_active (w)) |
1148 |
|
|
return; |
1149 |
|
|
|
1150 |
root |
1.9 |
checks [w->active - 1] = checks [--checkcnt]; |
1151 |
root |
1.51 |
ev_stop (EV_A_ (W)w); |
1152 |
root |
1.9 |
} |
1153 |
|
|
|
1154 |
root |
1.28 |
void |
1155 |
root |
1.51 |
ev_child_start (EV_P_ struct ev_child *w) |
1156 |
root |
1.22 |
{ |
1157 |
|
|
if (ev_is_active (w)) |
1158 |
|
|
return; |
1159 |
|
|
|
1160 |
root |
1.51 |
ev_start (EV_A_ (W)w, 1); |
1161 |
root |
1.22 |
wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1162 |
|
|
} |
1163 |
|
|
|
1164 |
root |
1.28 |
void |
1165 |
root |
1.51 |
ev_child_stop (EV_P_ struct ev_child *w) |
1166 |
root |
1.22 |
{ |
1167 |
root |
1.51 |
ev_clear_pending (EV_A_ (W)w); |
1168 |
root |
1.22 |
if (ev_is_active (w)) |
1169 |
|
|
return; |
1170 |
|
|
|
1171 |
|
|
wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1172 |
root |
1.51 |
ev_stop (EV_A_ (W)w); |
1173 |
root |
1.22 |
} |
1174 |
|
|
|
1175 |
root |
1.1 |
/*****************************************************************************/ |
1176 |
root |
1.10 |
|
1177 |
root |
1.16 |
struct ev_once |
1178 |
|
|
{ |
1179 |
|
|
struct ev_io io; |
1180 |
|
|
struct ev_timer to; |
1181 |
|
|
void (*cb)(int revents, void *arg); |
1182 |
|
|
void *arg; |
1183 |
|
|
}; |
1184 |
|
|
|
1185 |
|
|
static void |
1186 |
root |
1.51 |
once_cb (EV_P_ struct ev_once *once, int revents) |
1187 |
root |
1.16 |
{ |
1188 |
|
|
void (*cb)(int revents, void *arg) = once->cb; |
1189 |
|
|
void *arg = once->arg; |
1190 |
|
|
|
1191 |
root |
1.51 |
ev_io_stop (EV_A_ &once->io); |
1192 |
|
|
ev_timer_stop (EV_A_ &once->to); |
1193 |
root |
1.16 |
free (once); |
1194 |
|
|
|
1195 |
|
|
cb (revents, arg); |
1196 |
|
|
} |
1197 |
|
|
|
1198 |
|
|
static void |
1199 |
root |
1.51 |
once_cb_io (EV_P_ struct ev_io *w, int revents) |
1200 |
root |
1.16 |
{ |
1201 |
root |
1.51 |
once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1202 |
root |
1.16 |
} |
1203 |
|
|
|
1204 |
|
|
static void |
1205 |
root |
1.51 |
once_cb_to (EV_P_ struct ev_timer *w, int revents) |
1206 |
root |
1.16 |
{ |
1207 |
root |
1.51 |
once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1208 |
root |
1.16 |
} |
1209 |
|
|
|
1210 |
|
|
void |
1211 |
root |
1.51 |
ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1212 |
root |
1.16 |
{ |
1213 |
|
|
struct ev_once *once = malloc (sizeof (struct ev_once)); |
1214 |
|
|
|
1215 |
|
|
if (!once) |
1216 |
root |
1.29 |
cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1217 |
root |
1.16 |
else |
1218 |
|
|
{ |
1219 |
|
|
once->cb = cb; |
1220 |
|
|
once->arg = arg; |
1221 |
|
|
|
1222 |
root |
1.28 |
ev_watcher_init (&once->io, once_cb_io); |
1223 |
root |
1.16 |
if (fd >= 0) |
1224 |
|
|
{ |
1225 |
root |
1.28 |
ev_io_set (&once->io, fd, events); |
1226 |
root |
1.51 |
ev_io_start (EV_A_ &once->io); |
1227 |
root |
1.16 |
} |
1228 |
|
|
|
1229 |
root |
1.28 |
ev_watcher_init (&once->to, once_cb_to); |
1230 |
root |
1.16 |
if (timeout >= 0.) |
1231 |
|
|
{ |
1232 |
root |
1.28 |
ev_timer_set (&once->to, timeout, 0.); |
1233 |
root |
1.51 |
ev_timer_start (EV_A_ &once->to); |
1234 |
root |
1.16 |
} |
1235 |
|
|
} |
1236 |
|
|
} |
1237 |
|
|
|
1238 |
|
|
/*****************************************************************************/ |
1239 |
|
|
|
1240 |
root |
1.13 |
#if 0 |
1241 |
root |
1.12 |
|
1242 |
|
|
struct ev_io wio; |
1243 |
root |
1.1 |
|
1244 |
|
|
static void |
1245 |
|
|
sin_cb (struct ev_io *w, int revents) |
1246 |
|
|
{ |
1247 |
|
|
fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
1248 |
|
|
} |
1249 |
|
|
|
1250 |
|
|
static void |
1251 |
|
|
ocb (struct ev_timer *w, int revents) |
1252 |
|
|
{ |
1253 |
root |
1.4 |
//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
1254 |
root |
1.28 |
ev_timer_stop (w); |
1255 |
|
|
ev_timer_start (w); |
1256 |
root |
1.1 |
} |
1257 |
|
|
|
1258 |
root |
1.7 |
static void |
1259 |
|
|
scb (struct ev_signal *w, int revents) |
1260 |
|
|
{ |
1261 |
|
|
fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
1262 |
root |
1.28 |
ev_io_stop (&wio); |
1263 |
|
|
ev_io_start (&wio); |
1264 |
root |
1.7 |
} |
1265 |
|
|
|
1266 |
root |
1.9 |
static void |
1267 |
|
|
gcb (struct ev_signal *w, int revents) |
1268 |
|
|
{ |
1269 |
|
|
fprintf (stderr, "generic %x\n", revents); |
1270 |
root |
1.12 |
|
1271 |
root |
1.9 |
} |
1272 |
|
|
|
1273 |
root |
1.1 |
int main (void) |
1274 |
|
|
{ |
1275 |
|
|
ev_init (0); |
1276 |
|
|
|
1277 |
root |
1.28 |
ev_io_init (&wio, sin_cb, 0, EV_READ); |
1278 |
|
|
ev_io_start (&wio); |
1279 |
root |
1.1 |
|
1280 |
root |
1.4 |
struct ev_timer t[10000]; |
1281 |
root |
1.2 |
|
1282 |
root |
1.9 |
#if 0 |
1283 |
root |
1.2 |
int i; |
1284 |
root |
1.4 |
for (i = 0; i < 10000; ++i) |
1285 |
root |
1.2 |
{ |
1286 |
|
|
struct ev_timer *w = t + i; |
1287 |
root |
1.28 |
ev_watcher_init (w, ocb, i); |
1288 |
|
|
ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
1289 |
|
|
ev_timer_start (w); |
1290 |
root |
1.2 |
if (drand48 () < 0.5) |
1291 |
root |
1.28 |
ev_timer_stop (w); |
1292 |
root |
1.2 |
} |
1293 |
root |
1.4 |
#endif |
1294 |
|
|
|
1295 |
|
|
struct ev_timer t1; |
1296 |
root |
1.28 |
ev_timer_init (&t1, ocb, 5, 10); |
1297 |
|
|
ev_timer_start (&t1); |
1298 |
root |
1.1 |
|
1299 |
root |
1.7 |
struct ev_signal sig; |
1300 |
root |
1.28 |
ev_signal_init (&sig, scb, SIGQUIT); |
1301 |
|
|
ev_signal_start (&sig); |
1302 |
root |
1.7 |
|
1303 |
root |
1.9 |
struct ev_check cw; |
1304 |
root |
1.28 |
ev_check_init (&cw, gcb); |
1305 |
|
|
ev_check_start (&cw); |
1306 |
root |
1.9 |
|
1307 |
|
|
struct ev_idle iw; |
1308 |
root |
1.28 |
ev_idle_init (&iw, gcb); |
1309 |
|
|
ev_idle_start (&iw); |
1310 |
root |
1.9 |
|
1311 |
root |
1.1 |
ev_loop (0); |
1312 |
|
|
|
1313 |
|
|
return 0; |
1314 |
|
|
} |
1315 |
|
|
|
1316 |
|
|
#endif |
1317 |
|
|
|
1318 |
|
|
|
1319 |
|
|
|
1320 |
|
|
|