/*
* A modification operation to the MDFS has begun. This means the
* cursor thread must be woken to start a transaction group.
*/
void
slm_zfs_cursor_start(void)
{
spinlock(&slm_cursor_lock);
if (!slm_cursor_update_needed++ && !slm_cursor_update_inprog)
psc_waitq_wakeall(&slm_cursor_waitq);
freelock(&slm_cursor_lock);
}
/*
* A modification operation to the MDFS has ended. If other operations
* are ongoing, we need to re-wake the cursor thread to ensure a
* transaction group is active as it is not guaranteed to be awake.
*/
void
slm_zfs_cursor_end(void)
{
spinlock(&slm_cursor_lock);
psc_assert(slm_cursor_update_needed > 0);
if (--slm_cursor_update_needed && !slm_cursor_update_inprog)
psc_waitq_wakeall(&slm_cursor_waitq);
freelock(&slm_cursor_lock);
}
int
main(int argc, char *argv[])
{
int c, i, rc = 0;
progname = argv[0];
pfl_init();
while ((c = getopt(argc, argv, "n:i:")) != -1)
switch (c) {
case 'n':
nthreads = atoi(optarg);
break;
case 'i':
iterations = atoi(optarg);
break;
default:
usage();
}
argc -= optind;
if (argc)
usage();
psclog_debug("nthreads = %d", nthreads);
psc_waitq_init(&waitq);
for (i = 0; i < nthreads; i++)
pscthr_init(0, child_main, NULL, 0, "thr%d", i);
sleep(1);
psc_waitq_wakeall(&waitq);
sleep(2);
i = nthreads * iterations;
while (i--) {
psc_waitq_wakeone(&waitq);
usleep(30);
}
return rc;
}
