74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
/*****************************************************************************
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Copyright (c) 1995, 2018, Oracle and/or its affiliates. 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, version 2.0, as published by the
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Free Software Foundation.
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This program is also distributed with certain software (including but not
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limited to OpenSSL) that is licensed under separate terms, as designated in a
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particular file or component or in included license documentation. The authors
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of MySQL hereby grant you an additional permission to link the program and
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your derivative works with the separately licensed software that they have
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included with MySQL.
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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, version 2.0,
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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.,
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51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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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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/** The total amount of memory currently allocated from the operating
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system with os_mem_alloc_large(). */
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extern ulint os_total_large_mem_allocated;
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/** Whether to use large pages in the buffer pool */
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extern bool 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 uint os_large_page_size;
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/** Converts the current process id to a number.
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@return process id as a number */
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ulint os_proc_get_number(void);
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/** Allocates large pages memory.
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@param[in,out] n Number of bytes to allocate
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@return allocated memory */
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void *os_mem_alloc_large(ulint *n);
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/** Frees large pages memory.
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@param[in] ptr pointer returned by os_mem_alloc_large()
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@param[in] size size returned by os_mem_alloc_large() */
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void os_mem_free_large(void *ptr, ulint size);
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#include "os0proc.ic"
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#endif
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