/*
* pmemlog_tell -- returns the current write point for the log
*/
off_t
pmemlog_tell(PMEMlogpool *plp)
{
PMEMobjpool *pop = (PMEMobjpool *)plp;
struct base *bp = pmemobj_direct(pmemobj_root(pop,
sizeof (struct base)));
if (pmemobj_rwlock_rdlock(pop, &bp->rwlock) != 0)
return 0;
off_t bytes_written = bp->bytes_written;
pmemobj_rwlock_unlock(pop, &bp->rwlock);
return bytes_written;
}
/*
* rwlock_write_worker -- (internal) write data with rwlock
*/
static void *
rwlock_write_worker(void *arg)
{
for (unsigned run = 0; run < WORKER_RUNS; run++) {
if (pmemobj_rwlock_wrlock(&Mock_pop, &Test_obj->rwlock)) {
UT_ERR("pmemobj_rwlock_wrlock");
return NULL;
}
memset(Test_obj->data, (int)(uintptr_t)arg, DATA_SIZE);
if (pmemobj_rwlock_unlock(&Mock_pop, &Test_obj->rwlock))
UT_ERR("pmemobj_rwlock_unlock");
}
return NULL;
}
/*
* rwlock_check_worker -- (internal) check consistency with rwlock
*/
static void *
rwlock_check_worker(void *arg)
{
for (unsigned run = 0; run < WORKER_RUNS; run++) {
if (pmemobj_rwlock_rdlock(&Mock_pop, &Test_obj->rwlock)) {
UT_ERR("pmemobj_rwlock_rdlock");
return NULL;
}
uint8_t val = Test_obj->data[0];
for (int i = 1; i < DATA_SIZE; i++)
UT_ASSERTeq(Test_obj->data[i], val);
if (pmemobj_rwlock_unlock(&Mock_pop, &Test_obj->rwlock))
UT_ERR("pmemobj_rwlock_unlock");
}
return NULL;
}
/*
* pmemlog_walk -- walk through all data in a log memory pool
*
* As this implementation holds the size of each entry, the chunksize is ignored
* and the process_chunk function gets the actual entry length.
*/
void
pmemlog_walk(PMEMlogpool *plp, size_t chunksize,
int (*process_chunk)(const void *buf, size_t len, void *arg), void *arg)
{
PMEMobjpool *pop = (PMEMobjpool *)plp;
struct base *bp = pmemobj_direct(pmemobj_root(pop,
sizeof (struct base)));
if (pmemobj_rwlock_rdlock(pop, &bp->rwlock) != 0)
return;
/* process all chunks */
struct log *next = pmemobj_direct(bp->head);
while (next != NULL) {
(*process_chunk)(next->data, next->hdr.size, arg);
next = pmemobj_direct(next->hdr.next);
}
pmemobj_rwlock_unlock(pop, &bp->rwlock);
}
