projects / thirdparty / squid.git / blame
| Commit | Line | Data |
|---|---|---|
| 37be9888 | 1 | /* |
| ef57eb7b | 2 | * Copyright (C) 1996-2016 The Squid Software Foundation and contributors |
| 37be9888 AJ |
3 | * |
| 4 | * Squid software is distributed under GPLv2+ license and includes | |
| 5 | * contributions from numerous individuals and organizations. | |
| 6 | * Please see the COPYING and CONTRIBUTORS files for details. | |
| 7 | */ | |
| 8 | ||
| f04e1182 AJ |
9 | #ifndef SQUID_FDSETSIZE_H |
| 10 | #define SQUID_FDSETSIZE_H | |
| 11 | ||
| 12 | /**************************************************************************** | |
| 13 | *--------------------------------------------------------------------------* | |
| 14 | * DO *NOT* MAKE ANY CHANGES below here unless you know what you're doing...* | |
| 15 | *--------------------------------------------------------------------------* | |
| 16 | ****************************************************************************/ | |
| 17 | ||
| 18 | /* FD_SETSIZE must be redefined before including sys/types.h */ | |
| 19 | #if 0 | |
| 20 | /* AYJ: would dearly like to use this to enforce include order | |
| f53969cc SM |
21 | but at present some helpers don't follow the squid include methodology. |
| 22 | that will need fixing later. | |
| f04e1182 AJ |
23 | */ |
| 24 | #ifdef _SYS_TYPES_H | |
| 25 | #error squid_fdsetsize.h for FDSETSIZE must be included before sys/types.h | |
| 0baa07cd | 26 | #error Make sure that squid.h is the first file included by your .cc |
| f04e1182 AJ |
27 | #endif |
| 28 | #endif /* 0 */ | |
| 29 | /* | |
| 30 | * On some systems, FD_SETSIZE is set to something lower than the | |
| 31 | * actual number of files which can be opened. IRIX is one case, | |
| 32 | * NetBSD is another. So here we increase FD_SETSIZE to our | |
| 33 | * configure-discovered maximum *before* any system includes. | |
| 34 | */ | |
| 35 | #define CHANGE_FD_SETSIZE 1 | |
| 36 | ||
| 37 | /* | |
| 38 | * Cannot increase FD_SETSIZE on Linux, but we can increase __FD_SETSIZE | |
| 39 | * with glibc 2.2 (or later? remains to be seen). We do this by including | |
| 40 | * bits/types.h which defines __FD_SETSIZE first, then we redefine | |
| 41 | * __FD_SETSIZE. Ofcourse a user program may NEVER include bits/whatever.h | |
| 42 | * directly, so this is a dirty hack! | |
| 43 | */ | |
| 85dfb314 | 44 | #if _SQUID_LINUX_ || _SQUID_KFREEBSD_ |
| f04e1182 AJ |
45 | #undef CHANGE_FD_SETSIZE |
| 46 | #define CHANGE_FD_SETSIZE 0 | |
| 47 | #include <features.h> | |
| 48 | #if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) | |
| 49 | #if SQUID_MAXFD > DEFAULT_FD_SETSIZE | |
| 50 | #include <bits/types.h> | |
| a1f12e30 | 51 | #if HAVE_LINUX_POSIX_TYPES_H |
| e986e574 | 52 | #include <linux/posix_types.h> |
| a1f12e30 | 53 | #endif |
| f04e1182 AJ |
54 | #undef __FD_SETSIZE |
| 55 | #define __FD_SETSIZE SQUID_MAXFD | |
| 56 | #endif | |
| 57 | #endif | |
| 58 | #endif | |
| 59 | ||
| 60 | /* | |
| 61 | * Cannot increase FD_SETSIZE on FreeBSD before 2.2.0, causes select(2) | |
| 62 | * to return EINVAL. | |
| 63 | * --Marian Durkovic <marian@svf.stuba.sk> | |
| 64 | * --Peter Wemm <peter@spinner.DIALix.COM> | |
| 65 | */ | |
| 85dfb314 | 66 | #if _SQUID_FREEBSD_ |
| f04e1182 AJ |
67 | #include <osreldate.h> |
| 68 | #if __FreeBSD_version < 220000 | |
| 69 | #undef CHANGE_FD_SETSIZE | |
| 70 | #define CHANGE_FD_SETSIZE 0 | |
| 71 | #endif | |
| 72 | #endif | |
| 73 | ||
| 74 | /* | |
| 75 | * Trying to redefine CHANGE_FD_SETSIZE causes a slew of warnings | |
| 76 | * on Mac OS X Server. | |
| 77 | */ | |
| 85dfb314 | 78 | #if _SQUID_APPLE_ |
| f04e1182 AJ |
79 | #undef CHANGE_FD_SETSIZE |
| 80 | #define CHANGE_FD_SETSIZE 0 | |
| 81 | #endif | |
| 82 | ||
| 83 | /* Increase FD_SETSIZE if SQUID_MAXFD is bigger */ | |
| 84 | #if CHANGE_FD_SETSIZE && SQUID_MAXFD > DEFAULT_FD_SETSIZE | |
| 85 | #define FD_SETSIZE SQUID_MAXFD | |
| 86 | #endif | |
| 87 | ||
| f04e1182 AJ |
88 | /* |
| 89 | * Trap unintentional use of fd_set. Must not be used outside the | |
| 90 | * select code as it only supports FD_SETSIZE number of filedescriptors | |
| 91 | * and Squid may be running with a lot more.. | |
| 92 | * But only for code linked into Squid, not the helpers.. (unlinkd, pinger) | |
| 93 | */ | |
| 94 | #ifdef SQUID_FDSET_NOUSE | |
| 95 | # ifndef SQUID_HELPER | |
| 96 | # define fd_set ERROR_FD_SET_USED | |
| 97 | # endif | |
| 98 | #endif | |
| 99 | ||
| 100 | #endif /* SQUID_FDSETSIZE_H */ | |
| f53969cc | 101 |