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78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/*****************************************************************************
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Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*****************************************************************************/
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/**************************************************//**
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@file include/os0proc.h
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The interface to the operating system
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process control primitives
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Created 9/30/1995 Heikki Tuuri
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*******************************************************/
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#ifndef os0proc_h
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#define os0proc_h
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#include "univ.i"
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#ifdef UNIV_LINUX
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#endif
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typedef void* os_process_t;
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typedef unsigned long int os_process_id_t;
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extern ibool os_use_large_pages;
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/* Large page size. This may be a boot-time option on some platforms */
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extern ulint os_large_page_size;
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/****************************************************************//**
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Converts the current process id to a number. It is not guaranteed that the
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number is unique. In Linux returns the 'process number' of the current
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thread. That number is the same as one sees in 'top', for example. In Linux
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the thread id is not the same as one sees in 'top'.
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@return process id as a number */
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UNIV_INTERN
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ulint
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os_proc_get_number(void);
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/*====================*/
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/****************************************************************//**
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Allocates large pages memory.
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@return allocated memory */
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UNIV_INTERN
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void*
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os_mem_alloc_large(
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/*===============*/
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ulint* n); /*!< in/out: number of bytes */
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/****************************************************************//**
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Frees large pages memory. */
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UNIV_INTERN
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void
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os_mem_free_large(
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/*==============*/
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void *ptr, /*!< in: pointer returned by
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os_mem_alloc_large() */
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ulint size); /*!< in: size returned by
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os_mem_alloc_large() */
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#ifndef UNIV_NONINL
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#include "os0proc.ic"
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#endif
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#endif
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