include/babeltrace/compat/unistd-internal.h

   1 #ifndef _BABELTRACE_COMPAT_UNISTD_H
   2 #define _BABELTRACE_COMPAT_UNISTD_H
   3
   4 /*
   5  * babeltrace/compat/unistd.h
   6  *
   7  * (C) Copyright 2016 - Michael Jeanson <mjeanson@efficios.com>
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a copy
  10  * of this software and associated documentation files (the "Software"), to deal
  11  * in the Software without restriction, including without limitation the rights
  12  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  13  * copies of the Software, and to permit persons to whom the Software is
  14  * furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included in
  17  * all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  22  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  25  * SOFTWARE.
  26  */
  27
  28
  29 #include <unistd.h>
  30
  31 #ifdef __MINGW32__
  32 #include <windows.h>
  33 #include <errno.h>
  34
  35 #define _SC_PAGESIZE 30
  36
  37 static inline
  38 long bt_sysconf(int name)
  39 {
  40         SYSTEM_INFO si;
  41
  42         switch(name) {
  43         case _SC_PAGESIZE:
  44                 GetNativeSystemInfo(&si);
  45                 return si.dwPageSize;
  46         default:
  47                 errno = EINVAL;
  48                 return -1;
  49         }
  50 }
  51
  52 #else
  53
  54 static inline
  55 long bt_sysconf(int name)
  56 {
  57         return sysconf(name);
  58 }
  59
  60 #endif
  61 #endif /* _BABELTRACE_COMPAT_UNISTD_H */