IABSD.fr/xenocara/lib/libXaw/src/OS.c

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• Author : matthieu
  Date : 2021-08-09 17:51:45
  Hash : d31678eb
  Message : Update to libXaw 1.0.14

• lib/libXaw/src/OS.c

• /* Some OS-dependent utility code */
  
  #ifdef HAVE_CONFIG_H
  #include <config.h>
  #endif
  #include <X11/Xosdefs.h>
  #include <X11/IntrinsicP.h>
  #include "Private.h"
  
  #ifdef HAVE_UNISTD_H
  #include <unistd.h>	/* for sysconf(), and getpagesize() */
  #endif
  
  #if defined(_WIN32) && !defined(__CYGWIN__)
  /* AC_CHECK_FUNCS([getpagesize]) may report a false positive for
     getpagesize() when using MinGW gcc, since it's present in libgcc.a */
  #undef HAVE_GETPAGESIZE
  #endif
  
  #if defined(linux)
  /* kernel header doesn't work with -ansi */
  /* #include <asm/page.h> *//* for PAGE_SIZE */
  #define HAS_SC_PAGESIZE	/* _SC_PAGESIZE may be an enum for Linux */
  #endif
  
  int
  _XawGetPageSize(void)
  {
      static int pagesize = -1;
  
      if (pagesize != -1)
  	return pagesize;
  
      /* Try each supported method in the preferred order */
  
  #if defined(_SC_PAGESIZE) || defined(HAS_SC_PAGESIZE)
      pagesize = (int) sysconf(_SC_PAGESIZE);
  #endif
  
  #ifdef _SC_PAGE_SIZE
      if (pagesize == -1)
  	pagesize = (int) sysconf(_SC_PAGE_SIZE);
  #endif
  
  #ifdef HAVE_GETPAGESIZE
      if (pagesize == -1)
  	pagesize = getpagesize();
  #endif
  
  #ifdef PAGE_SIZE
      if (pagesize == -1)
  	pagesize = PAGE_SIZE;
  #endif
  
      if (pagesize == -1)
  	pagesize = 0;
  
      return pagesize;
  }