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Replaced flagalrm() timers with another technique to check for timeouts.

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This allowed removing the p_flagarlm timer from the kernel's process table.
Furthermore, I merged p_syncalrm and p_signalrm into p_alarm_timer to save
even more space. Note that processes can no longer have both a signal and
synchronous alarm timer outstanding as of now.
This commit is contained in:
Jorrit Herder
2005-05-31 14:43:04 +00:00
parent e673eeee20
commit 0165662cd9
15 changed files with 91 additions and 167 deletions
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kernel/system.c
+2 -7
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@@ -114,9 +114,7 @@ PRIVATE void initialize(void)
/* Initialize all alarm timers for all processes. */
for (rp=BEG_PROC_ADDR; rp < END_PROC_ADDR; rp++) {
tmr_inittimer(&(rp->p_signalrm));
tmr_inittimer(&(rp->p_syncalrm));
tmr_inittimer(&(rp->p_flagalrm));
tmr_inittimer(&(rp->p_alarm_timer));
}
/* Initialize the call vector to a safe default handler. Some system calls
@@ -146,7 +144,6 @@ PRIVATE void initialize(void)
map(SYS_TIMES, do_times); /* get uptime and process times */
map(SYS_SIGNALRM, do_signalrm); /* causes an alarm signal */
map(SYS_SYNCALRM, do_syncalrm); /* send a notification message */
map(SYS_FLAGALRM, do_flagalrm); /* set a timeout flag to 1 */
/* Device I/O. */
map(SYS_IRQCTL, do_irqctl); /* interrupt control operations */
@@ -192,9 +189,7 @@ int proc_nr; /* slot of process to clean up */
rc = proc_addr(proc_nr);
/* Turn off any alarm timers at the clock. */
reset_timer(&rc->p_signalrm);
reset_timer(&rc->p_flagalrm);
reset_timer(&rc->p_syncalrm);
reset_timer(&rc->p_alarm_timer);
/* Make sure the exiting process is no longer scheduled. */
if (rc->p_flags == 0) lock_unready(rc);