| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| /*------------------------------------------------------------------------- |
| * |
| * cdbsharedoidsearch.h |
| * |
| * |
| *------------------------------------------------------------------------- |
| */ |
| #ifndef CDBSHAREDOIDSEARCH_H |
| #define CDBSHAREDOIDSEARCH_H |
| |
| #include "utils/palloc.h" |
| #include "storage/fd.h" |
| #include "cdb/cdbshareddoublylinked.h" |
| #include "cdb/cdbsharedoidsearch.h" |
| |
| |
| typedef struct SharedOidSearchFreeObjPool |
| { |
| SharedListBase listBase; |
| |
| SharedDoublyLinkedHead freeList; |
| } SharedOidSearchFreeObjPool; |
| |
| typedef struct SharedOidSearchHashBucket |
| { |
| SharedDoublyLinkedHead bucketListHead; |
| } SharedOidSearchHashBucket; |
| |
| typedef struct SharedOidSearchObjHeader |
| { |
| struct |
| { |
| SharedDoubleLinks links; |
| |
| int16 pinCount; |
| |
| bool isDeleted; |
| } private; |
| |
| Oid oid1; /* tablespace oid */ |
| Oid oid2; /* database oid */ |
| |
| uint8 clientData[]; |
| } SharedOidSearchObjHeader; |
| |
| typedef struct SharedOidSearchTable |
| { |
| struct |
| { |
| int32 hashSize; |
| |
| SharedOidSearchFreeObjPool freePool; |
| |
| SharedOidSearchHashBucket buckets[1]; |
| } private; |
| } SharedOidSearchTable; |
| |
| typedef enum SharedOidSearchAddResult |
| { |
| SharedOidSearchAddResult_None = 0, |
| SharedOidSearchAddResult_Ok = 1, |
| SharedOidSearchAddResult_Exists = 2, |
| SharedOidSearchAddResult_NoMemory = 3, |
| MaxSharedOidSearchAddResult /* must always be last */ |
| } SharedOidSearchAddResult; |
| |
| |
| // ----------------------------------------------------------------------------- |
| // Initialize |
| // ----------------------------------------------------------------------------- |
| |
| extern int32 SharedOidSearch_TableLen( |
| int32 hashSize, |
| /* The hash array size */ |
| |
| int32 freeObjectCount, |
| |
| int32 objectLen); |
| /* |
| * The total length of the objects that includes the embedded header |
| * SharedOidSearchObjHeader. |
| */ |
| extern void SharedOidSearch_InitTable( |
| SharedOidSearchTable *table, |
| /* The shared search tables to initialize. */ |
| |
| int32 hashSize, |
| /* The hash array size */ |
| |
| int32 freeObjectCount, |
| |
| int32 objectLen); |
| /* |
| * The total length of the objects that includes the embedded header |
| * SharedOidSearchObjHeader. |
| */ |
| |
| // ----------------------------------------------------------------------------- |
| // Add, Find, Probe, Iterate, and Delete |
| // ----------------------------------------------------------------------------- |
| |
| extern SharedOidSearchAddResult SharedOidSearch_Add( |
| SharedOidSearchTable *table, |
| Oid oid1, |
| Oid oid2, |
| SharedOidSearchObjHeader **header); |
| |
| extern SharedOidSearchObjHeader *SharedOidSearch_Find( |
| SharedOidSearchTable *table, |
| Oid oid1, |
| Oid oid2); |
| |
| extern SharedOidSearchObjHeader *SharedOidSearch_Probe( |
| SharedOidSearchTable *table, |
| Oid oid1, |
| Oid oid2); |
| |
| extern void SharedOidSearch_Iterate( |
| SharedOidSearchTable *table, |
| SharedOidSearchObjHeader **header); |
| |
| extern void SharedOidSearch_ReleaseIterator( |
| SharedOidSearchTable *table, |
| SharedOidSearchObjHeader **header); |
| |
| extern void SharedOidSearch_Delete( |
| SharedOidSearchTable *table, |
| SharedOidSearchObjHeader *header); |
| |
| #endif /* CDBSHAREDOIDSEARCH_H */ |