Date: Wed, 17 Aug 94 19:11:29 +0100
From: buers AT dg1 DOT chemie DOT uni-konstanz DOT de (Dieter Buerssner)
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: bug in paging.c


While trying the new release of djgpp (1.12), I found that the compiler
paged very much. Enabling toplineinfo I found that free memory (VCPI)
was about 2100 kB when gcc is loaded and only 300 kB when cc1 is loaded
from gcc. (32 bit version of gcc). I 'stubedited' the keepmem of
gcc (and make) to 0, and the problem seemed to go away. But in different 
situations the same problem appeared again.

For the second problem I found the solution in paging.c, where the used
memory is calculated in 16 bit arithmetic. 

The first problem doesn't seem to dissappear. Even when the keepmem is on
1 Mb I think the chield process should have much more free memory with my setup
than 300 kB.

Dieter



*** paging.oc	Wed Aug 17 18:57:56 1994
--- paging.c	Wed Aug 17 18:57:12 1994
***************
*** 1098,1104 ****
  
    fInPageOutEverything = 1;
  
!   kept_on_exec = (valloc_used()*4096 <= stub_info.max_keep_on_spawn);
    if (!kept_on_exec)
      while (page_out(-1) != 0xffff)
        vfree();
--- 1098,1104 ----
  
    fInPageOutEverything = 1;
  
!   kept_on_exec = (valloc_used()*4096L <= stub_info.max_keep_on_spawn);
    if (!kept_on_exec)
      while (page_out(-1) != 0xffff)
        vfree();