mman(5) [hpux man page]

mman(5) 							File Formats Manual							   mman(5)

NAME

       mman - memory mapping definitions

SYNOPSIS

DESCRIPTION

       The header defines the following symbolic constants for use with the function:

	      No further special treatment.
	      Expect random page references.
	      Expect sequential page references.
	      Will need these pages.
	      Will not need these pages.
	      Ensure that resources are reserved.

       The following symbolic constants are defined for use with the and functions:

	      Region can be read.
	      Region can be written.
	      Region can be executed.
	      Region cannot be accessed.

       The following symbolic constants are defined for use with the function:

	      Map a file.
	      Map an unnamed memory region.
	      Place region at implementation-computed address.
	      Place region at specified address.
	      Share changes made to mapped region.
	      Changes to mapped region are private to a process.

       The following symbolic constants are defined for use with the function:

	      Perform synchronous writes.
	      Perform asynchronous writes.
	      Invalidate cached pages.

       The following symbolic constants are defined for use with the and functions:

	      Create semaphore in locked state.
	      Create semaphore in unlocked state.
	      Do not wait if semaphore is locked.
	      Do not unlock if semaphore has no waiters.

       The is defined for use with the and 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).

																	   mman(5)

mman.h(3HEAD)							      Headers							     mman.h(3HEAD)

NAME

       mman.h, mman - memory management declarations

SYNOPSIS

       #include <sys/mman.h>

DESCRIPTION

       The <sys/mman.h> header supports the following options:

	 o  the Memory Mapped Files option

	 o  the Shared Memory Objects option

	 o  the Process Memory Locking option

	 o  the Memory Protection option

	 o  the Synchronized Input and Output option

       For Memory Mapped Files and Shared Memory Objects options, the following protection options are defined:

       PROT_READ       Page can be read.

       PROT_WRITE      Page can be written.

       PROT_EXEC       Page can be executed.

       PROT_NONE       Page cannot be accessed.

       The following flag options are defined:

       MAP_SHARED      Share changes.

       MAP_PRIVATE     Changes are private.

       MAP_FIXED       Interpret addr exactly.

       The flags immediately following are defined for msync(). See msync(3C).

       MS_ASYNC        Perform asynchronous writes.

       MS_SYNC	       Perform synchronous writes.

       MS_INVALIDATE   Invalidate mappings.

       The symbolic constants immediately following are defined for the mlockall() function. See mlockall(3C).

       MCL_CURRENT     Lock currently mapped pages.

       MCL_FUTURE      Lock pages that become mapped.

       The symbolic constant MAP_FAILED is defined to indicate a failure from the mmap() function. See mmap(2).

       The mode_t, off_t, and size_t types are be defined as described in <sys/types.h>. See types(3HEAD).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mmap(2),  mprotect(2),  munmap(2),  madvise(3C),  mlock(3C),  mlockall(3C), msync(3C), shm_open(3RT), shm_unlink(3RT), attributes(5), stan-
       dards(5)

SunOS 5.10							    10 Sep 2004 						     mman.h(3HEAD)