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/*****************************************************************************
Copyright (c) 1995, 2014, Oracle and/or its affiliates. All Rights Reserved.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
*****************************************************************************/
/**************************************************//**
@file include/os0proc.h
The interface to the operating system
process control primitives
Created 9/30/1995 Heikki Tuuri
*******************************************************/
#ifndef os0proc_h
#define os0proc_h
#include "univ.i"
#ifdef UNIV_LINUX
#include <sys/ipc.h>
#include <sys/shm.h>
#endif
typedef void* os_process_t;
typedef unsigned long int os_process_id_t;
/** The total amount of memory currently allocated from the operating
system with os_mem_alloc_large(). */
extern ulint os_total_large_mem_allocated;
/** Whether to use large pages in the buffer pool */
extern my_bool os_use_large_pages;
/** Large page size. This may be a boot-time option on some platforms */
extern uint os_large_page_size;
/** Converts the current process id to a number.
@return process id as a number */
ulint
os_proc_get_number(void);
/** Allocates large pages memory.
@param[in,out] n Number of bytes to allocate
@return allocated memory */
void*
os_mem_alloc_large(
ulint* n);
/** Frees large pages memory.
@param[in] ptr pointer returned by os_mem_alloc_large()
@param[in] size size returned by os_mem_alloc_large() */
void
os_mem_free_large(
void *ptr,
ulint size);
#ifndef UNIV_NONINL
#include "os0proc.ic"
#endif
#endif
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