/* ----------------------------------------------------------------
* ExecReScanBitmapHeapScan(node)
* ----------------------------------------------------------------
*/
void
ExecReScanBitmapHeapScan(BitmapHeapScanState *node)
{
PlanState *outerPlan = outerPlanState(node);
/* rescan to release any page pin */
heap_rescan(node->ss.ss_currentScanDesc, NULL);
if (node->tbmiterator)
tbm_end_iterate(node->tbmiterator);
if (node->prefetch_iterator)
tbm_end_iterate(node->prefetch_iterator);
if (node->shared_tbmiterator)
tbm_end_shared_iterate(node->shared_tbmiterator);
if (node->shared_prefetch_iterator)
tbm_end_shared_iterate(node->shared_prefetch_iterator);
if (node->tbm)
tbm_free(node->tbm);
node->tbm = NULL;
node->tbmiterator = NULL;
node->tbmres = NULL;
node->prefetch_iterator = NULL;
node->initialized = false;
node->shared_tbmiterator = NULL;
node->shared_prefetch_iterator = NULL;
/* Reset parallel bitmap state, if present */
if (node->pstate)
{
dsa_area *dsa = node->ss.ps.state->es_query_dsa;
node->pstate->state = BM_INITIAL;
if (DsaPointerIsValid(node->pstate->tbmiterator))
tbm_free_shared_area(dsa, node->pstate->tbmiterator);
if (DsaPointerIsValid(node->pstate->prefetch_iterator))
tbm_free_shared_area(dsa, node->pstate->prefetch_iterator);
node->pstate->tbmiterator = InvalidDsaPointer;
node->pstate->prefetch_iterator = InvalidDsaPointer;
}
ExecScanReScan(&node->ss);
/*
* if chgParam of subnode is not null then plan will be re-scanned by
* first ExecProcNode.
*/
if (outerPlan->chgParam == NULL)
ExecReScan(outerPlan);
}
/* ----------------------------------------------------------------
* ExecBitmapHeapReInitializeDSM
*
* Reset shared state before beginning a fresh scan.
* ----------------------------------------------------------------
*/
void
ExecBitmapHeapReInitializeDSM(BitmapHeapScanState *node,
ParallelContext *pcxt)
{
ParallelBitmapHeapState *pstate = node->pstate;
dsa_area *dsa = node->ss.ps.state->es_query_dsa;
pstate->state = BM_INITIAL;
if (DsaPointerIsValid(pstate->tbmiterator))
tbm_free_shared_area(dsa, pstate->tbmiterator);
if (DsaPointerIsValid(pstate->prefetch_iterator))
tbm_free_shared_area(dsa, pstate->prefetch_iterator);
pstate->tbmiterator = InvalidDsaPointer;
pstate->prefetch_iterator = InvalidDsaPointer;
}
/* ----------------------------------------------------------------
* ExecBitmapHeapReInitializeDSM
*
* Reset shared state before beginning a fresh scan.
* ----------------------------------------------------------------
*/
void
ExecBitmapHeapReInitializeDSM(BitmapHeapScanState *node,
ParallelContext *pcxt)
{
ParallelBitmapHeapState *pstate = node->pstate;
dsa_area *dsa = node->ss.ps.state->es_query_dsa;
/* If there's no DSA, there are no workers; do nothing. */
if (dsa == NULL)
return;
pstate->state = BM_INITIAL;
if (DsaPointerIsValid(pstate->tbmiterator))
tbm_free_shared_area(dsa, pstate->tbmiterator);
if (DsaPointerIsValid(pstate->prefetch_iterator))
tbm_free_shared_area(dsa, pstate->prefetch_iterator);
pstate->tbmiterator = InvalidDsaPointer;
pstate->prefetch_iterator = InvalidDsaPointer;
}
