/************************************************************************
Frees the global purge system control structure. */
UNIV_INTERN
void
trx_purge_sys_close(void)
/*======================*/
{
ut_ad(!mutex_own(&kernel_mutex));
que_graph_free(purge_sys->query);
ut_a(purge_sys->sess->trx->is_purge);
purge_sys->sess->trx->conc_state = TRX_NOT_STARTED;
sess_close(purge_sys->sess);
purge_sys->sess = NULL;
if (purge_sys->view != NULL) {
/* Because acquiring the kernel mutex is a pre-condition
of read_view_close(). We don't really need it here. */
mutex_enter(&kernel_mutex);
read_view_close(purge_sys->view);
purge_sys->view = NULL;
mutex_exit(&kernel_mutex);
}
trx_undo_arr_free(purge_sys->arr);
rw_lock_free(&purge_sys->latch);
mutex_free(&purge_sys->mutex);
mem_heap_free(purge_sys->heap);
mem_free(purge_sys);
purge_sys = NULL;
}
ibool
sess_try_close(
/*===========*/
/* out: TRUE if closed */
sess_t* sess) /* in, own: session object */
{
#ifdef UNIV_SYNC_DEBUG
ut_ad(mutex_own(&kernel_mutex));
#endif /* UNIV_SYNC_DEBUG */
if (UT_LIST_GET_LEN(sess->graphs) == 0) {
sess_close(sess);
return(TRUE);
}
return(FALSE);
}
