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| author | dyson <dyson@FreeBSD.org> | 1997-04-13 01:48:35 +0000 |
|---|---|---|
| committer | dyson <dyson@FreeBSD.org> | 1997-04-13 01:48:35 +0000 |
| commit | 61955ab83033e59cfabb8590ba5ccbf0669d9a47 (patch) | |
| tree | 8d2081b02ed11701596e498b2013cf9f5a5625dd /sys/vm/pmap.h | |
| parent | 438bdd8a9c9d390f13a4b05980c19b18e974d16c (diff) | |
| download | FreeBSD-src-61955ab83033e59cfabb8590ba5ccbf0669d9a47.zip FreeBSD-src-61955ab83033e59cfabb8590ba5ccbf0669d9a47.tar.gz | |
Fully implement vfork. Vfork is now much much faster than even our
fork. (On my machine, fork is about 240usecs, vfork is 78usecs.)
Implement rfork(!RFPROC !RFMEM), which allows a thread to divorce its memory
from the other threads of a group.
Implement rfork(!RFPROC RFCFDG), which closes all file descriptors, eliminating
possible existing shares with other threads/processes.
Implement rfork(!RFPROC RFFDG), which divorces the file descriptors for a
thread from the rest of the group.
Fix the case where a thread does an exec. It is almost nonsense for a thread
to modify the other threads address space by an exec, so we
now automatically divorce the address space before modifying it.
Diffstat (limited to 'sys/vm/pmap.h')
| -rw-r--r-- | sys/vm/pmap.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/vm/pmap.h b/sys/vm/pmap.h index 64a7063..7a7233f 100644 --- a/sys/vm/pmap.h +++ b/sys/vm/pmap.h @@ -61,7 +61,7 @@ * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. * - * $Id$ + * $Id: pmap.h,v 1.19 1997/02/22 09:48:04 peter Exp $ */ /* @@ -129,6 +129,7 @@ void pmap_new_proc __P((struct proc *p)); void pmap_dispose_proc __P((struct proc *p)); void pmap_swapout_proc __P((struct proc *p)); void pmap_swapin_proc __P((struct proc *p)); +void pmap_activate __P((struct proc *p)); #endif /* KERNEL */ |
