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authorRoland McGrath <roland@gnu.org>1995-11-26 17:32:10 +0000
committerRoland McGrath <roland@gnu.org>1995-11-26 17:32:10 +0000
commitfbaad1494f7fa9e52c391a926d1c3a015604eb58 (patch)
treeb40487798dd252bb73ced92f96a842e598d0ef05 /sysdeps/unix/sysv/linux/sys
parentf44820454cd5266a807041bd5e5ae36b4f4f6d84 (diff)
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Sun Nov 26 02:00:02 1995 Ulrich Drepper <drepper@gnu.ai.mit.edu>
* misc/syslog.c (vsyslog) [USE_IN_LIBIO]: Adapted for libio. Thu Nov 23 02:21:55 1995 Ulrich Drepper <drepper@gnu.ai.mit.edu> * sysdeps/unix/sysv/linux/{mlock,munlock,mlockall,munlockall}.S: New files. * sysdeps/unix/sysv/linux/mman.h: Add prototypes for new functions mlock, munlock, mlockall, and munlockall.
Diffstat (limited to 'sysdeps/unix/sysv/linux/sys')
-rw-r--r--sysdeps/unix/sysv/linux/sys/mman.h24
1 files changed, 20 insertions, 4 deletions
diff --git a/sysdeps/unix/sysv/linux/sys/mman.h b/sysdeps/unix/sysv/linux/sys/mman.h
index b05738d8e4..9f0ef72100 100644
--- a/sysdeps/unix/sysv/linux/sys/mman.h
+++ b/sysdeps/unix/sysv/linux/sys/mman.h
@@ -17,10 +17,6 @@ License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
-/* These are the bits used by 4.4 BSD and its derivatives. On systems
- (such as GNU) where these facilities are not system services but can be
- emulated in the C library, these are the definitions we emulate. */
-
#ifndef _SYS_MMAN_H
#define _SYS_MMAN_H 1
@@ -70,6 +66,10 @@ Cambridge, MA 02139, USA. */
#define MADV_WILLNEED 3 /* Will need these pages. */
#define MADV_DONTNEED 4 /* Don't need these pages. */
+/* Flags to `mlockall'. */
+#define MCL_CURRENT 1 /* Lock all current mappings. */
+#define MCL_FUTURE 2 /* Lock all future mappings. */
+
#include <sys/cdefs.h>
__BEGIN_DECLS
@@ -106,6 +106,22 @@ int msync __P ((__caddr_t __addr, size_t __len));
for the region starting at ADDR and extending LEN bytes. */
int madvise __P ((__caddr_t __addr, size_t __len, int __advice));
+/* Cause all currently mapped pages of the process to be memory resident
+ until unlocked by a call to the `munlockall', until the process exits,
+ or until the process calls `execve'. */
+int mlockall __P ((int __flags));
+
+/* All currently mapped pages of the process' address space become
+ unlocked. */
+int munlockall __P ((void));
+
+/* Guarantee all whole pages mapped by the range [ADDR,ADDR+LEN) to
+ be memory resident. */
+int mlock __P ((__caddr_t __addr, size_t __len));
+
+/* Unlock whole pages previously mapped by the range [ADDR,ADDR+LEN). */
+int munlock __P ((__caddr_t __addr, size_t __len));
+
__END_DECLS