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Change.dylan.kinglet.160270: mmdw is not available for linux

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 Change: 21149
 ServerID: perforce.ravenbrook.com
This commit is contained in:
Tony Mann 2000-03-03 18:09:48 +00:00
parent 5437a3402b
commit bc114aa0c4
1 changed files with 7 additions and 9 deletions
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16
mps/src/vmli.c
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@ -1,17 +1,15 @@
/* impl.c.vmli: VIRTUAL MEMORY MAPPING FOR LINUX
*
* $HopeName: MMsrc!vmli.c(trunk.3) $
* $HopeName: MMsrc!vmli.c(trunk.4) $
* Copyright (C) 1995, 1997, 1998 Harlequin Group, all rights reserved
*
* Readership: Any MPS developer
*
* Design: design.mps.vm, design.mps.vmli
*
* Status: a bit hacky, but probably working.
*
* This is the implementation of the virtual memory mapping interface
* (vm.h) for LINUX. It was created by copying vmo1.c (the DIGITAL
* UNIX implementation) as that seemed to be closest.
* .purpose: This is the implementation of the virtual memory mapping
* interface (vm.h) for LINUX. It was created by copying vmo1.c (the
* DIGITAL UNIX implementation) as that seemed to be closest.
*
* mmap(2) is used to reserve address space by creating a mapping to
* /etc/passwd with page access none. mmap(2) is used to map pages
@ -23,7 +21,7 @@
* appears to be a bug, so we work round it by using /etc/passwd,
* the only file we can think of which is pretty much guaranteed
* to be around. [these experiments have not been tried on LINUX
* so might be okay to /dev/zero].
* so it might be okay to use /dev/zero].
*
* .assume.not-last: The implementation of VMCreate assumes that
* mmap() will not choose a region which contains the last page
@ -64,7 +62,7 @@
/* for sysconf(2),close(2) */
#include <unistd.h>
SRCID(vmli, "$HopeName: MMsrc!vmli.c(trunk.3) $");
SRCID(vmli, "$HopeName: MMsrc!vmli.c(trunk.4) $");
/* VMStruct -- virtual memory structure */
@ -262,7 +260,7 @@ Res VMMap(VM vm, Addr base, Addr limit)
vm->mapped += size;
EVENT_PAA(VMUnmap, vm, base, limit);
EVENT_PAA(VMMap, vm, base, limit);
return ResOK;
}