/*
* Initialize the shared-memory for this module.
*/
void PersistentRelation_ShmemInit(void)
{
bool found;
/* Create the shared-memory structure. */
persistentRelationSharedData =
(PersistentRelationSharedData *)
ShmemInitStruct("Mirrored Rel File Data",
PersistentRelation_SharedDataSize(),
&found);
if (!found)
{
PersistentFileSysObj_InitShared(
&persistentRelationSharedData->fileSysObjSharedData);
}
PersistentFileSysObj_Init(
&persistentRelationData.fileSysObjData,
&persistentRelationSharedData->fileSysObjSharedData,
PersistentFsObjType_RelationFile,
/* scanTupleCallback */ NULL);
Assert(persistentRelationSharedData != NULL);
}
/*
* Return the required shared-memory size for this module.
*/
Size PersistentRelation_ShmemSize(void)
{
Size size = 0;
/* The shared-memory structure. */
size = add_size(size, PersistentRelation_SharedDataSize());
return size;
}
/*
* Return the required shared-memory size for this module.
*/
Size PersistentRelation_ShmemSize(void)
{
Size size;
/* The hash table of persistent relations */
size = hash_estimate_size((Size)gp_max_relations,
sizeof(RelationDirEntryData));
/* The shared-memory structure. */
size = add_size(size, PersistentRelation_SharedDataSize());
elog(LOG, "PersistentRelation_ShmemSize: %zu = "
"gp_max_relations: %d "
"* sizeof(RelationDirEntryData): %zu "
"+ PersistentRelation_SharedDataSize(): %zu",
size,
gp_max_relations,
sizeof(RelationDirEntryData),
PersistentRelation_SharedDataSize());
return size;
}
/*
* Initialize the shared-memory for this module.
*/
void PersistentRelation_ShmemInit(void)
{
bool found;
bool ok;
/* Create the shared-memory structure. */
persistentRelationSharedData =
(PersistentRelationSharedData *)
ShmemInitStruct("Mirrored Relation Data",
PersistentRelation_SharedDataSize(),
&found);
if (!found)
{
PersistentFileSysObj_InitShared(
&persistentRelationSharedData->fileSysObjSharedData);
}
/* Create or find our shared-memory hash table. */
ok = PersistentRelation_HashTableInit();
if (!ok)
{
ereport(FATAL,
(errcode(ERRCODE_OUT_OF_MEMORY),
errmsg("Not enough shared memory for persistent relation hash table")));
}
PersistentFileSysObj_Init(
&persistentRelationData.fileSysObjData,
&persistentRelationSharedData->fileSysObjSharedData,
PersistentFsObjType_RelationDir,
PersistentRelation_ScanTupleCallback);
Assert(persistentRelationSharedData != NULL);
Assert(persistentRelationSharedHashTable != NULL);
}
