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)