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/cvs/libev/ev_poll.c
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Comparing libev/ev_poll.c (file contents):
Revision 1.27 by root, Wed Oct 29 06:32:48 2008 UTC vs.
Revision 1.34 by root, Wed Mar 31 11:57:35 2010 UTC

1/* 1/*
2 * libev poll fd activity backend 2 * libev poll fd activity backend
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
40#include <poll.h> 40#include <poll.h>
41 41
42void inline_size 42void inline_size
43pollidx_init (int *base, int count) 43pollidx_init (int *base, int count)
44{ 44{
45 /* consider using memset (.., -1, ...), which is pratically guarenteed 45 /* consider using memset (.., -1, ...), which is practically guaranteed
46 * to work on all systems implementing poll */ 46 * to work on all systems implementing poll */
47 while (count--) 47 while (count--)
48 *base++ = -1; 48 *base++ = -1;
49} 49}
50 50
… …
87 87
88static void 88static void
89poll_poll (EV_P_ ev_tstamp timeout) 89poll_poll (EV_P_ ev_tstamp timeout)
90{ 90{
91 struct pollfd *p; 91 struct pollfd *p;
92 int res;
93
94 EV_RELEASE_CB;
92 int res = poll (polls, pollcnt, (int)ceil (timeout * 1000.)); 95 res = poll (polls, pollcnt, (int)ceil (timeout * 1000.));
96 EV_ACQUIRE_CB;
93 97
94 if (expect_false (res < 0)) 98 if (expect_false (res < 0))
95 { 99 {
96 if (errno == EBADF) 100 if (errno == EBADF)
97 fd_ebadf (EV_A); 101 fd_ebadf (EV_A);
… …
100 else if (errno != EINTR) 104 else if (errno != EINTR)
101 ev_syserr ("(libev) poll"); 105 ev_syserr ("(libev) poll");
102 } 106 }
103 else 107 else
104 for (p = polls; res; ++p) 108 for (p = polls; res; ++p)
105 if (expect_false (p->revents)) /* this expect is debatable */
106 { 109 {
107 --res; 110 assert (("libev: poll() returned illegal result, broken BSD kernel?", p < polls + pollcnt));
108 111
112 if (expect_false (p->revents)) /* this expect is debatable */
113 {
114 --res;
115
109 if (expect_false (p->revents & POLLNVAL)) 116 if (expect_false (p->revents & POLLNVAL))
110 fd_kill (EV_A_ p->fd); 117 fd_kill (EV_A_ p->fd);
111 else 118 else
112 fd_event ( 119 fd_event (
113 EV_A_ 120 EV_A_
114 p->fd, 121 p->fd,
115 (p->revents & (POLLOUT | POLLERR | POLLHUP) ? EV_WRITE : 0) 122 (p->revents & (POLLOUT | POLLERR | POLLHUP) ? EV_WRITE : 0)
116 | (p->revents & (POLLIN | POLLERR | POLLHUP) ? EV_READ : 0) 123 | (p->revents & (POLLIN | POLLERR | POLLHUP) ? EV_READ : 0)
117 ); 124 );
118 } 125 }
126 }
119} 127}
120 128
121int inline_size 129int inline_size
122poll_init (EV_P_ int flags) 130poll_init (EV_P_ int flags)
123{ 131{

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