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69fc883be2
Removal of the variable innobase_buffer_pool_awe_mem_mb requires coordination with MySQL AB.
78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
/******************************************************
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The interface to the operating system
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process control primitives
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(c) 1995 Innobase Oy
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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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ulint
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os_proc_get_number(void);
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/*====================*/
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/********************************************************************
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Allocates non-cacheable memory. */
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void*
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os_mem_alloc_nocache(
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/*=================*/
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/* out: allocated memory */
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ulint n); /* in: number of bytes */
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/********************************************************************
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Allocates large pages memory. */
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void*
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os_mem_alloc_large(
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/*===============*/
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/* out: allocated memory */
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ulint n, /* in: number of bytes */
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ibool set_to_zero, /* in: TRUE if allocated memory
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should be set to zero if
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UNIV_SET_MEM_TO_ZERO is defined */
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ibool assert_on_error);/* in: if TRUE, we crash mysqld if
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the memory cannot be allocated */
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/********************************************************************
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Frees large pages memory. */
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void
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os_mem_free_large(
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/*==============*/
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void *ptr); /* in: number of bytes */
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/********************************************************************
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Sets the priority boost for threads released from waiting within the current
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process. */
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void
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os_process_set_priority_boost(
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/*==========================*/
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ibool do_boost); /* in: TRUE if priority boost should be done,
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FALSE if not */
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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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