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New NOTIFY system call! Queued at kernel. Duplicate messages (with same source

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and type) are overwritten with newer flags/ arguments. The interface from
within the kernel is lock_notify(). User processes can make a system call with
notify(). NOTIFY fully replaces the old notification mechanism.
This commit is contained in:
Jorrit Herder
2005-05-24 10:06:17 +00:00
parent 80e38daead
commit ccd17ecfed
22 changed files with 304 additions and 377 deletions
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6
kernel/clock.c
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@@ -128,7 +128,7 @@ PUBLIC void clock_task()
*/
if (result != EDONTREPLY) {
m.m_type = result;
lock_send(proc_addr(CLOCK), m.m_source, &m);
lock_send(CLOCK, m.m_source, &m);
}
}
}
@@ -222,6 +222,7 @@ irq_hook_t *hook;
*/
register struct proc *rp;
register unsigned ticks;
message m;
clock_t now;
/* Acknowledge the PS/2 clock interrupt. */
@@ -247,7 +248,8 @@ irq_hook_t *hook;
if (next_timeout <= now || (sched_ticks == 1 && bill_ptr == prev_ptr
&& rdy_head[PPRI_USER] != NIL_PROC))
{
lock_notify(CLOCK, HARD_INT);
m.NOTIFY_TYPE = HARD_INT;
lock_notify(HARDWARE, CLOCK, &m);
}
else if (--sched_ticks == 0) {
sched_ticks = SCHED_RATE; /* reset quantum */