blob: 823da83c63e875412d5672147e474a2ccd556fc8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/*****************************************************************************
Copyright (c) 1995, 2016, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2017, MariaDB Corporation.
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 Atomic_counter<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);
#endif
|
