39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
/*===========================================================================*
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* do_xit *
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*===========================================================================*/
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PUBLIC int do_xit(m_ptr)
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message *m_ptr; /* pointer to request message */
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{
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/* Handle sys_exit. A user process has exited (the MM sent the request).
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*/
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register struct proc *rp, *rc;
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struct proc *np, *xp;
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int exit_proc_nr;
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/* Get a pointer to the process that exited. */
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exit_proc_nr = m_ptr->PR_PROC_NR;
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if (exit_proc_nr == SELF) exit_proc_nr = m_ptr->m_source;
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if (! isokprocn(exit_proc_nr)) return(EINVAL);
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rc = proc_addr(exit_proc_nr);
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/* If this is a user process and the MM passed in a valid parent process,
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* accumulate the child times at the parent.
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*/
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if (isuserp(rc) && isokprocn(m_ptr->PR_PPROC_NR)) {
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rp = proc_addr(m_ptr->PR_PPROC_NR);
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lock();
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rp->child_utime += rc->user_time + rc->child_utime;
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rp->child_stime += rc->sys_time + rc->child_stime;
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unlock();
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}
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/* Now call the routine to clean up of the process table slot. This cancels
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* outstanding timers, possibly removes the process from the message queues,
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* and resets important process table fields.
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*/
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clear_proc(exit_proc_nr);
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return(OK); /* tell MM that cleanup succeeded */
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}
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