libmicrohttpd

HTTP/1.x server C library (MHD 1.x, stable)
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sysfdsetsize.c (2368B)

      1 /*
      2   This file is part of libmicrohttpd
      3   Copyright (C) 2015-2023 Karlson2k (Evgeny Grin)
      4 
      5   This library is free software; you can redistribute it and/or
      6   modify it under the terms of the GNU Lesser General Public
      7   License as published by the Free Software Foundation; either
      8   version 2.1 of the License, or (at your option) any later version.
      9 
     10   This library is distributed in the hope that it will be useful,
     11   but WITHOUT ANY WARRANTY; without even the implied warranty of
     12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13   Lesser General Public License for more details.
     14 
     15   You should have received a copy of the GNU Lesser General Public
     16   License along with this library; if not, write to the Free Software
     17   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
     18 */
     19 
     20 /**
     21  * @file microhttpd/sysfdsetsize.c
     22  * @brief  Helper for obtaining FD_SETSIZE system default value
     23  * @author Karlson2k (Evgeny Grin)
     24  */
     25 
     26 
     27 #include "mhd_options.h"
     28 
     29 #ifndef MHD_SYS_FD_SETSIZE_
     30 
     31 #include "sysfdsetsize.h"
     32 
     33 #ifdef FD_SETSIZE
     34 /* FD_SETSIZE was defined before system headers. */
     35 /* To get system value of FD_SETSIZE, undefine FD_SETSIZE
     36    here. */
     37 #undef FD_SETSIZE
     38 #endif /* FD_SETSIZE */
     39 
     40 #ifdef HAVE_STDLIB_H
     41 #include <stdlib.h>
     42 #endif /* HAVE_STDLIB_H */
     43 #if defined(__VXWORKS__) || defined(__vxworks) || defined(OS_VXWORKS)
     44 #include <sockLib.h>
     45 #endif /* OS_VXWORKS */
     46 #ifdef HAVE_SYS_SELECT_H
     47 #include <sys/select.h>
     48 #endif /* HAVE_SYS_SELECT_H */
     49 #ifdef HAVE_SYS_TYPES_H
     50 #include <sys/types.h>
     51 #endif /* HAVE_SYS_TYPES_H */
     52 #ifdef HAVE_SYS_TIME_H
     53 #include <sys/time.h>
     54 #endif /* HAVE_SYS_TIME_H */
     55 #ifdef HAVE_TIME_H
     56 #include <time.h>
     57 #endif /* HAVE_TIME_H */
     58 #ifdef HAVE_UNISTD_H
     59 #include <unistd.h>
     60 #endif /* HAVE_UNISTD_H */
     61 #ifdef HAVE_SYS_SOCKET_H
     62 #include <sys/socket.h>
     63 #endif /* HAVE_SYS_SOCKET_H */
     64 
     65 #if defined(_WIN32) && ! defined(__CYGWIN__)
     66 #ifndef WIN32_LEAN_AND_MEAN
     67 #define WIN32_LEAN_AND_MEAN 1
     68 #endif /* !WIN32_LEAN_AND_MEAN */
     69 #include <winsock2.h>
     70 #endif /* _WIN32 && !__CYGWIN__ */
     71 
     72 #ifndef FD_SETSIZE
     73 #error FD_SETSIZE must be defined in system headers
     74 #endif /* !FD_SETSIZE */
     75 
     76 
     77 /**
     78  * Get system default value of FD_SETSIZE
     79  * @return system default value of FD_SETSIZE
     80  */
     81 unsigned int
     82 get_system_fdsetsize_value (void)
     83 {
     84   return (unsigned int) FD_SETSIZE;
     85 }
     86 
     87 
     88 #endif /* ! MHD_SYS_FD_SETSIZE_ */