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89 lines
1.9 KiB
C
89 lines
1.9 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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#include "os0proc.h"
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#ifdef UNIV_NONINL
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#include "os0proc.ic"
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#endif
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#ifdef __WIN__
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#include <windows.h>
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#endif
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#include "ut0mem.h"
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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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#ifdef __WIN__
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return((ulint)GetCurrentProcessId());
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#else
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return((ulint)getpid());
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#endif
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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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#ifdef __WIN__
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void* ptr;
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ptr = VirtualAlloc(NULL, n, MEM_COMMIT,
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PAGE_READWRITE | PAGE_NOCACHE);
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ut_a(ptr);
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return(ptr);
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#else
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return(ut_malloc(n));
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#endif
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}
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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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{
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#ifdef __WIN__
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ibool no_boost;
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if (do_boost) {
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no_boost = FALSE;
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} else {
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no_boost = TRUE;
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}
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ut_a(TRUE == 1);
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/* Does not do anything currently!
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SetProcessPriorityBoost(GetCurrentProcess(), no_boost);
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*/
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fputs("Warning: process priority boost setting currently not functional!\n",
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stderr);
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#else
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UT_NOT_USED(do_boost);
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#endif
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}
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