| 1 | /* |
1 | /* |
| 2 | * libev select fd activity backend |
2 | * libev select fd activity backend |
| 3 | * |
3 | * |
| 4 | * Copyright (c) 2007,2008,2009 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 | * |
| … | |
… | |
| 37 | * either the BSD or the GPL. |
37 | * either the BSD or the GPL. |
| 38 | */ |
38 | */ |
| 39 | |
39 | |
| 40 | #ifndef _WIN32 |
40 | #ifndef _WIN32 |
| 41 | /* for unix systems */ |
41 | /* for unix systems */ |
|
|
42 | # include <inttypes.h> |
|
|
43 | # ifndef __hpux |
|
|
44 | /* for REAL unix systems */ |
| 42 | # include <sys/select.h> |
45 | # include <sys/select.h> |
| 43 | # include <inttypes.h> |
46 | # endif |
| 44 | #endif |
47 | #endif |
| 45 | |
48 | |
| 46 | #ifndef EV_SELECT_USE_FD_SET |
49 | #ifndef EV_SELECT_USE_FD_SET |
| 47 | # ifdef NFDBITS |
50 | # ifdef NFDBITS |
| 48 | # define EV_SELECT_USE_FD_SET 0 |
51 | # define EV_SELECT_USE_FD_SET 0 |
| … | |
… | |
| 139 | struct timeval tv; |
142 | struct timeval tv; |
| 140 | int res; |
143 | int res; |
| 141 | int fd_setsize; |
144 | int fd_setsize; |
| 142 | |
145 | |
| 143 | EV_RELEASE_CB; |
146 | EV_RELEASE_CB; |
| 144 | tv.tv_sec = (long)timeout; |
147 | EV_TV_SET (tv, timeout); |
| 145 | tv.tv_usec = (long)((timeout - (ev_tstamp)tv.tv_sec) * 1e6); |
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|
| 146 | |
148 | |
| 147 | #if EV_SELECT_USE_FD_SET |
149 | #if EV_SELECT_USE_FD_SET |
| 148 | fd_setsize = sizeof (fd_set); |
150 | fd_setsize = sizeof (fd_set); |
| 149 | #else |
151 | #else |
| 150 | fd_setsize = vec_max * NFDBYTES; |
152 | fd_setsize = vec_max * NFDBYTES; |
| … | |
… | |
| 182 | else |
184 | else |
| 183 | errno -= WSABASEERR; |
185 | errno -= WSABASEERR; |
| 184 | #endif |
186 | #endif |
| 185 | |
187 | |
| 186 | #ifdef _WIN32 |
188 | #ifdef _WIN32 |
| 187 | /* select on windows errornously returns EINVAL when no fd sets have been |
189 | /* select on windows erroneously returns EINVAL when no fd sets have been |
| 188 | * provided (this is documented). what microsoft doesn't tell you that this bug |
190 | * provided (this is documented). what microsoft doesn't tell you that this bug |
| 189 | * exists even when the fd sets _are_ provided, so we have to check for this bug |
191 | * exists even when the fd sets _are_ provided, so we have to check for this bug |
| 190 | * here and emulate by sleeping manually. |
192 | * here and emulate by sleeping manually. |
| 191 | * we also get EINVAL when the timeout is invalid, but we ignore this case here |
193 | * we also get EINVAL when the timeout is invalid, but we ignore this case here |
| 192 | * and assume that EINVAL always means: you have to wait manually. |
194 | * and assume that EINVAL always means: you have to wait manually. |
