/*
* BT_SYNC -- sync the btree to disk.
*
* Parameters:
* dbp: pointer to access method
*
* Returns:
* RET_SUCCESS, RET_ERROR.
*/
int
__bt_sync(const DB *dbp, u_int flags)
{
BTREE *t;
int status;
t = dbp->internal;
/* Toss any page pinned across calls. */
if (t->bt_pinned != NULL) {
mpool_put(t->bt_mp, t->bt_pinned, 0);
t->bt_pinned = NULL;
}
/* Sync doesn't currently take any flags. */
if (flags != 0) {
errno = EINVAL;
return (RET_ERROR);
}
if (F_ISSET(t, B_INMEM | B_RDONLY) || !F_ISSET(t, B_MODIFIED))
return (RET_SUCCESS);
if (F_ISSET(t, B_METADIRTY) && bt_meta(t) == RET_ERROR)
return (RET_ERROR);
if ((status = mpool_sync(t->bt_mp)) == RET_SUCCESS)
F_CLR(t, B_MODIFIED);
return (status);
}
static void *thread_start(void *arg)
{
struct thread_info *tinfo = (struct thread_info *) arg;
struct timeval delay;
delay.tv_sec = 30;
delay.tv_usec = 0;//10000;//10ms
while(!stop_daemon)
{
delay.tv_sec = 30;
delay.tv_usec = 0;//10000;//10ms
int rv = select(0,NULL,NULL,NULL,&delay);
if(rv == 0)
{
pthread_mutex_lock(&mutex);
mpool_sync(tinfo->mpool);
pthread_mutex_unlock(&mutex);
}
}
printf("Check Data Thread %d exit!\n",getpid());
return NULL;
}