70 lines
1.7 KiB
C++
70 lines
1.7 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/dispatch.cc
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* DESCRIPTION: Kernel Thread Dispatcher
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* DEVELOPERS: Rafal Kupiec <belliash@codingworkshop.eu.org>
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*/
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#include <xtos.hh>
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/**
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* Exits the dispatcher, switches context to a new thread and lowers runlevel to its original state.
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*
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* @param OldRunLevel
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* Supplies the original runlevel state.
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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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KE::Dispatcher::ExitDispatcher(IN KRUNLEVEL OldRunLevel)
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{
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UNIMPLEMENTED;
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/* Lower runlevel */
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RunLevel::LowerRunLevel(OldRunLevel);
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}
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/**
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* Handles the dispatch interrupt by retiring pending DPCs, asking the scheduler for the next runnable thread
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* and performing the context switch.
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*
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* @param TrapFrame
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* Supplies a pointer to the hardware trap frame representing the interrupted context.
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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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XTCDECL
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VOID
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KE::Dispatcher::HandleDispatchInterrupt(IN PKTRAP_FRAME TrapFrame)
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{
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/* End the interrupt */
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HL::Pic::SendEoi();
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}
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/**
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* Updates the runtime quantum of the currently executing thread and handles preemption.
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*
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* @param TrapFrame
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* Supplies a pointer to the hardware trap frame representing the interrupted execution context.
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*
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* @param RunLevel
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* Supplies the system run level at which the interrupt was taken.
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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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XTAPI
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VOID
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KE::Dispatcher::UpdateRunTime(IN PKTRAP_FRAME TrapFrame,
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IN KRUNLEVEL RunLevel)
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{
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}
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