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 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 | * |
… | |
… | |
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); |
98 | else if (errno == ENOMEM && !syserr_cb) |
102 | else if (errno == ENOMEM && !syserr_cb) |
99 | fd_enomem (EV_A); |
103 | fd_enomem (EV_A); |
100 | else if (errno != EINTR) |
104 | else if (errno != EINTR) |
101 | 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 */ |
109 | if (expect_false (p->revents)) /* this expect is debatable */ |
106 | { |
110 | { |