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slightly more accurate and verbose sanity checking

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This commit is contained in:
Ben Gras 2007-03-15 10:57:39 +00:00
parent 98410fd5fe
commit 1588a9ba77
1 changed files with 19 additions and 15 deletions
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34
kernel/debug.c
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@ -104,7 +104,7 @@ void timer_end(int cat)
#if DEBUG_SCHED_CHECK /* only include code if enabled */
#define PROCLIMIT 10000
#define MAX_LOOP (NR_PROCS + NR_TASKS)
PUBLIC void
check_runqueues(char *when)
@ -114,51 +114,55 @@ check_runqueues(char *when)
for (xp = BEG_PROC_ADDR; xp < END_PROC_ADDR; ++xp) {
xp->p_found = 0;
if (l++ > PROCLIMIT) { panic("check error", NO_NUM); }
if (l++ > MAX_LOOP) { panic("check error", NO_NUM); }
}
for (q=0; q < NR_SCHED_QUEUES; q++) {
for (q=l=0; q < NR_SCHED_QUEUES; q++) {
if (rdy_head[q] && !rdy_tail[q]) {
kprintf("head but no tail: %s", when);
kprintf("head but no tail in %d: %s", q, when);
panic("scheduling error", NO_NUM);
}
if (!rdy_head[q] && rdy_tail[q]) {
kprintf("tail but no head: %s", when);
kprintf("tail but no head in %d: %s", q, when);
panic("scheduling error", NO_NUM);
}
if (rdy_tail[q] && rdy_tail[q]->p_nextready != NIL_PROC) {
kprintf("tail and tail->next not null; %s", when);
kprintf("tail and tail->next not null in %d: %s", q, when);
panic("scheduling error", NO_NUM);
}
for(xp = rdy_head[q]; xp != NIL_PROC; xp = xp->p_nextready) {
if (!xp->p_ready) {
kprintf("scheduling error: unready on runq: %s\n", when);
kprintf("scheduling error: unready on runq %d proc %d: %s\n",
q, xp->p_nr, when);
panic("found unready process on run queue", NO_NUM);
}
if (xp->p_priority != q) {
kprintf("scheduling error: wrong priority: %s\n", when);
kprintf("scheduling error: wrong priority q %d proc %d: %s\n",
q, xp->p_nr, when);
panic("wrong priority", NO_NUM);
}
if (xp->p_found) {
kprintf("scheduling error: double scheduling: %s\n", when);
kprintf("scheduling error: double sched q %d proc %d: %s\n",
q, xp->p_nr, when);
panic("proc more than once on scheduling queue", NO_NUM);
}
xp->p_found = 1;
if (xp->p_nextready == NIL_PROC && rdy_tail[q] != xp) {
kprintf("scheduling error: last element not tail: %s\n", when);
kprintf("sched err: last element not tail q %d proc %d: %s\n",
q, xp->p_nr, when);
panic("scheduling error", NO_NUM);
}
if (l++ > PROCLIMIT) panic("loop in schedule queue?", NO_NUM);
if (l++ > MAX_LOOP) panic("loop in schedule queue?", NO_NUM);
}
}
l = 0;
for (xp = BEG_PROC_ADDR; xp < END_PROC_ADDR; ++xp) {
if (! isemptyp(xp) && xp->p_ready && ! xp->p_found) {
kprintf("scheduling error: ready not on queue: %s\n", when);
kprintf("sched error: ready proc %d not on queue: %s\n",
xp->p_nr, when);
panic("ready proc not on scheduling queue", NO_NUM);
if (l++ > PROCLIMIT) { panic("loop in proc.t?", NO_NUM); }
if (l++ > MAX_LOOP) { panic("loop in proc.t?", NO_NUM); }
}
}
}