27 lines
806 B
C
27 lines
806 B
C
#include "kernel/system.h"
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#include <minix/endpoint.h>
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#include "kernel/clock.h"
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/*===========================================================================*
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* do_schedule *
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*===========================================================================*/
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PUBLIC int do_schedule(struct proc * caller, message * m_ptr)
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{
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struct proc *p;
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int proc_nr;
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unsigned priority, quantum;
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if (!isokendpt(m_ptr->SCHEDULING_ENDPOINT, &proc_nr))
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return EINVAL;
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p = proc_addr(_ENDPOINT_P(m_ptr->SCHEDULING_ENDPOINT));
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/* Only this process' scheduler can schedule it */
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if (caller != p->p_scheduler)
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return(EPERM);
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/* Try to schedule the process. */
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priority = (unsigned) m_ptr->SCHEDULING_PRIORITY;
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quantum = (unsigned) m_ptr->SCHEDULING_QUANTUM;
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return sched_proc(p, priority, quantum);
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}
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