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Optimized scheduling code. Old code is still available withing DEAD_CODE

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and NEW_SCHED_Q definitions. Some minor problems are being traced at the
moment. This commit is meant to backup my files.
  --- Jorrit
This commit is contained in:
Jorrit Herder
2005-05-26 13:17:57 +00:00
parent dcffa17db2
commit 77c3213948
15 changed files with 321 additions and 198 deletions
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14
kernel/clock.c
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@@ -118,7 +118,7 @@ PUBLIC void clock_task()
result = do_clocktick(&m); /* handle clock tick */
break;
default: /* illegal message type */
kprintf("CLOCK got illegal request from %d.\n", m.m_source);
kprintf("Warning, illegal CLOCK request from %d.\n", m.m_source);
result = EBADREQUEST;
}
@@ -128,7 +128,8 @@ PUBLIC void clock_task()
*/
if (result != EDONTREPLY) {
m.m_type = result;
lock_send(m.m_source, &m);
if (OK != lock_send(m.m_source, &m))
kprintf("Warning, CLOCK couldn't reply to %d.\n", m.m_source);
}
}
}
@@ -155,9 +156,10 @@ message *m_ptr; /* pointer to request message */
TMR_NEVER : clock_timers->tmr_exp_time;
}
/* If a user process has been running too long, pick another one. */
if (--sched_ticks == 0) {
if (bill_ptr == prev_ptr) lock_sched(); /* process has run too long */
/* If a process has been running too long, pick another one. */
if (--sched_ticks <= 0) {
if (bill_ptr == prev_ptr)
lock_sched(PPRI_USER); /* process has run too long */
sched_ticks = SCHED_RATE; /* reset quantum */
prev_ptr = bill_ptr; /* new previous process */
}
@@ -249,7 +251,7 @@ irq_hook_t *hook;
m.NOTIFY_TYPE = HARD_INT;
lock_notify(CLOCK, &m);
}
else if (--sched_ticks == 0) {
else if (--sched_ticks <= 0) {
sched_ticks = SCHED_RATE; /* reset the quantum */
prev_ptr = bill_ptr; /* new previous process */
}