mman.5 (2010 09)

m
mman(5) mman(5)
NAME
mman - memory mapping definitions
SYNOPSIS
#include <sys/mman.h>
DESCRIPTION
The <sys/mman.h> header defines the following symbolic constants for use with the
madvise() func-
tion:
MADV_NORMAL No further special treatment.
MADV_RANDOM Expect random page references.
MADV_SEQUENTIAL
Expect sequential page references.
MADV_WILLNEED Will need these pages.
MADV_DONTNEED Will not need these pages.
MADV_SPACEAVAIL
Ensure that resources are reserved.
The following symbolic constants are defined for use with the
mmap() and mprotect() functions:
PROT_READ Region can be read.
PROT_WRITE Region can be written.
PROT_EXEC Region can be executed.
PROT_NONE Region cannot be accessed.
The following symbolic constants are defined for use with the
mmap() function:
MAP_FILE Map a file.
MAP_ANONYMOUS Map an unnamed memory region.
MAP_VARIABLE Place region at implementation-computed address.
MAP_FIXED Place region at specified address.
MAP_SHARED Share changes made to mapped region.
MAP_PRIVATE Changes to mapped region are private to a process.
The following symbolic constants are defined for use with the
msync() function:
MS_SYNC Perform synchronous writes.
MS_ASYNC Perform asynchronous writes.
MS_INVALIDATE Invalidate cached pages.
The following symbolic constants are defined for use with the
msem_init(), msem_lock(), and
msem_unlock() functions:
MSEM_LOCKED Create semaphore in locked state.
MSEM_UNLOCKED Create semaphore in unlocked state.
MSEM_IF_NOWAIT Do not wait if semaphore is locked.
MSEM_IF_WAITERS Do not unlock if semaphore has no waiters.
The
typedef struct msemaphore is defined for use with the msem_init(), msem_lock(),
msem_unlock(), and msem_remove() functions.
SEE ALSO
mmap(2), munmap(2), mprotect(2), msync(2), madvise(2), msem_init(2), msem_remove(2), msem_lock(2),
msem_unlock(2).
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1