Message-Id: <3.0.1.32.19980126152809.007ea690@yacker.xiotech.com>
Date: Mon, 26 Jan 1998 15:28:09 -0600
To: djgpp-workers AT delorie DOT com
From: Randy Maas <randym AT acm DOT org>
Subject: sysconf.c patch
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Hello all,
I've attached a patch to sysconf() that extends its functionality a little
bit.  It now returns information for _SC_PHYS_PAGES (the number of system
physical pages) and the _SC_AVPHYS_PAGES (the number of physical pages
available).

Why? I don't actually need the info for anything (atleast not yet).
However I believe that making sysconf() more complete will inspire more
people to use it instead of __dpmi_* and _go32_ calls -- leading to more
portable code, which is a good thing.

Randy

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*** src/libc/posix/unistd/sysconf.c~1	Thu Jan  1 22:14:04 1998
--- src/libc/posix/unistd/sysconf.c	Mon Jan 26 14:21:48 1998
***************
*** 5,8 ****
--- 5,9 ----
  #include <time.h>
  #include <go32.h>
+ #include <dpmi.h>
  
  long
***************
*** 21,24 ****
--- 22,32 ----
    case _SC_TZNAME_MAX:	return TZNAME_MAX;
    case _SC_VERSION:	return _POSIX_VERSION;
+   case _SC_AVPHYS_PAGES: return _go32_dpmi_remaining_physical_memory()/4096;
+   case _SC_PHYS_PAGES:
+   {
+      __dpmi_free_mem_info Info;
+      __dpmi_get_free_memory_information(&Info);
+      return Info.total_number_of_physical_pages;
+   }
  
    default:

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