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 | |
42 | void inline_size |
42 | void inline_size |
43 | pollidx_init (int *base, int count) |
43 | pollidx_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 | |
88 | static void |
88 | static void |
89 | poll_poll (EV_P_ ev_tstamp timeout) |
89 | poll_poll (EV_P_ ev_tstamp timeout) |
90 | { |
90 | { |
91 | struct pollfd *p; |
91 | struct pollfd *p; |
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92 | int res; |
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93 | |
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94 | EV_RELEASE_CB; |
92 | int res = poll (polls, pollcnt, (int)ceil (timeout * 1000.)); |
95 | res = poll (polls, pollcnt, (int)ceil (timeout * 1000.)); |
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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 */ |
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|
106 | { |
109 | { |
107 | --res; |
110 | assert (("libev: poll() returned illegal result, broken BSD kernel?", p < polls + pollcnt)); |
108 | |
111 | |
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112 | if (expect_false (p->revents)) /* this expect is debatable */ |
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113 | { |
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114 | --res; |
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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 | } |
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|
126 | } |
119 | } |
127 | } |
120 | |
128 | |
121 | int inline_size |
129 | int inline_size |
122 | poll_init (EV_P_ int flags) |
130 | poll_init (EV_P_ int flags) |
123 | { |
131 | { |