82 lines
1.6 KiB
C
82 lines
1.6 KiB
C
/**
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* PROJECT: ExectOS
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* COPYRIGHT: See COPYING.md in the top level directory
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* FILE: xtoskrnl/ke/runlevel.c
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* DESCRIPTION: Running Level management support
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* DEVELOPERS: Rafal Kupiec <belliash@codingworkshop.eu.org>
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*/
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#include <xtos.h>
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/**
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* Gets the current running level of the current processor.
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*
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* @return This routine returns the current running level.
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*
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* @since XT 1.0
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*/
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XTFASTCALL
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KRUNLEVEL
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KeGetCurrentRunLevel()
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{
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return HlGetRunLevel();
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}
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/**
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* Lowers the running level of the current processor.
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*
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* @param RunLevel
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* Supplies the new running level to lower to.
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*
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* @return This routine does not return any value.
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*
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* @since XT 1.0
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*/
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XTFASTCALL
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VOID
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KeLowerRunLevel(IN KRUNLEVEL RunLevel)
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{
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KRUNLEVEL OldRunLevel;
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/* Read current run level */
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OldRunLevel = HlGetRunLevel();
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/* Validate run level lowerage */
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if(OldRunLevel > RunLevel)
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{
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/* Set new, lower run level */
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HlSetRunLevel(RunLevel);
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}
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}
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/**
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* Raises the running level of the current processor.
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*
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* @param RunLevel
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* Supplies the new running level to raise to.
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*
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* @return This routine returns the old running level.
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*
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* @since XT 1.0
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*/
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XTFASTCALL
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KRUNLEVEL
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KeRaiseRunLevel(IN KRUNLEVEL RunLevel)
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{
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KRUNLEVEL OldRunLevel;
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/* Read current run level */
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OldRunLevel = HlGetRunLevel();
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/* Validate run level raise */
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if(OldRunLevel < RunLevel)
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{
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/* Set new, higher run level */
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HlSetRunLevel(RunLevel);
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}
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/* Return old run level */
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return OldRunLevel;
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}
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