35 lines
938 B
C
35 lines
938 B
C
/* The system call implemented in this file:
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* m_type: SYS_ENDSIG
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*
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* The parameters for this system call are:
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* m2_i1: SIG_PROC (process that was signaled)
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*/
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#include "../kernel.h"
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#include "../system.h"
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INIT_ASSERT
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/*===========================================================================*
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* do_endsig *
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*===========================================================================*/
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PUBLIC int do_endsig(m_ptr)
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register message *m_ptr; /* pointer to request message */
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{
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/* Finish up after a KSIG-type signal, caused by a SYS_KILL message or a call
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* to cause_sig by a task
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*/
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register struct proc *rp;
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rp = proc_addr(m_ptr->SIG_PROC);
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if (isemptyp(rp)) return(EINVAL); /* process already dead? */
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assert(isuserp(rp));
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/* MM has finished one KSIG. */
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if (rp->p_pendcount != 0 && --rp->p_pendcount == 0
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&& (rp->p_flags &= ~SIG_PENDING) == 0)
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lock_ready(rp);
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return(OK);
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}
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