| /*------------------------------------------------------------------------- | |
| * | |
| * hio.h | |
| * POSTGRES heap access method input/output definitions. | |
| * | |
| * | |
| * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group | |
| * Portions Copyright (c) 1994, Regents of the University of California | |
| * | |
| * src/include/access/hio.h | |
| * | |
| *------------------------------------------------------------------------- | |
| */ | |
| /* | |
| * state for bulk inserts --- private to heapam.c and hio.c | |
| * | |
| * If current_buf isn't InvalidBuffer, then we are holding an extra pin | |
| * on that buffer. | |
| * | |
| * "typedef struct BulkInsertStateData *BulkInsertState" is in heapam.h | |
| */ | |
| typedef struct BulkInsertStateData | |
| { | |
| BufferAccessStrategy strategy; /* our BULKWRITE strategy object */ | |
| Buffer current_buf; /* current insertion target page */ | |
| /* | |
| * State for bulk extensions. | |
| * | |
| * last_free..next_free are further pages that were unused at the time of | |
| * the last extension. They might be in use by the time we use them | |
| * though, so rechecks are needed. | |
| * | |
| * XXX: Eventually these should probably live in RelationData instead, | |
| * alongside targetblock. | |
| * | |
| * already_extended_by is the number of pages that this bulk inserted | |
| * extended by. If we already extended by a significant number of pages, | |
| * we can be more aggressive about extending going forward. | |
| */ | |
| BlockNumber next_free; | |
| BlockNumber last_free; | |
| uint32 already_extended_by; | |
| } BulkInsertStateData; | |
| extern void RelationPutHeapTuple(Relation relation, Buffer buffer, | |
| HeapTuple tuple, bool token); | |
| extern Buffer RelationGetBufferForTuple(Relation relation, Size len, | |
| Buffer otherBuffer, int options, | |
| BulkInsertStateData *bistate, | |
| Buffer *vmbuffer, Buffer *vmbuffer_other, | |
| int num_pages); | |