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-/******************************************************
-The interface to the operating system
-shared memory primitives
-
-(c) 1995 Innobase Oy
-
-Created 9/23/1995 Heikki Tuuri
-*******************************************************/
-
-#ifndef os0shm_h
-#define os0shm_h
-
-#include "univ.i"
-
-typedef void* os_shm_t;
-
-
-/********************************************************************
-Creates an area of shared memory. It can be named so that
-different processes may access it in the same computer.
-If an area with the same name already exists, returns
-a handle to that area (where the size of the area is
-not changed even if this call requests a different size).
-To use the area, it first has to be mapped to the process
-address space by os_shm_map. */
-
-os_shm_t
-os_shm_create(
-/*==========*/
- /* out, own: handle to the shared
- memory area, NULL if error */
- ulint size, /* in: area size < 4 GB */
- char* name); /* in: name of the area as a null-terminated
- string */
-/***************************************************************************
-Frees a shared memory area. The area can be freed only after it
-has been unmapped in all the processes where it was mapped. */
-
-ibool
-os_shm_free(
-/*========*/
- /* out: TRUE if success */
- os_shm_t shm); /* in, own: handle to a shared memory area */
-/***************************************************************************
-Maps a shared memory area in the address space of a process. */
-
-void*
-os_shm_map(
-/*=======*/
- /* out: address of the area, NULL if error */
- os_shm_t shm); /* in: handle to a shared memory area */
-/***************************************************************************
-Unmaps a shared memory area from the address space of a process. */
-
-ibool
-os_shm_unmap(
-/*=========*/
- /* out: TRUE if succeed */
- void* addr); /* in: address of the area */
-
-
-#ifndef UNIV_NONINL
-#include "os0shm.ic"
-#endif
-
-#endif