diff options
Diffstat (limited to 'src/include/storage/large_object.h')
| -rw-r--r-- | src/include/storage/large_object.h | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/src/include/storage/large_object.h b/src/include/storage/large_object.h index 23118aaf5ac..164d3abb5dc 100644 --- a/src/include/storage/large_object.h +++ b/src/include/storage/large_object.h @@ -1,47 +1,44 @@ /*------------------------------------------------------------------------- * * large_object.h - * file of info for Postgres large objects. POSTGRES 4.2 supports + * Declarations for PostgreSQL large objects. POSTGRES 4.2 supported * zillions of large objects (internal, external, jaquith, inversion). * Now we only support inversion. * * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/storage/large_object.h,v 1.27 2003/11/29 22:41:13 pgsql Exp $ + * $PostgreSQL: pgsql/src/include/storage/large_object.h,v 1.28 2004/07/28 14:23:31 tgl Exp $ * *------------------------------------------------------------------------- */ #ifndef LARGE_OBJECT_H #define LARGE_OBJECT_H -#include "utils/rel.h" - /*---------- * Data about a currently-open large object. * * id is the logical OID of the large object + * xid is the transaction Id that opened the LO (or currently owns it) * offset is the current seek offset within the LO - * heap_r holds an open-relation reference to pg_largeobject - * index_r holds an open-relation reference to pg_largeobject_loid_pn_index + * flags contains some flag bits * - * NOTE: before 7.1, heap_r and index_r held references to the separate - * table and index of a specific large object. Now they all live in one rel. + * NOTE: before 7.1, we also had to store references to the separate table + * and index of a specific large object. Now they all live in pg_largeobject + * and are accessed via a common relation descriptor. *---------- */ typedef struct LargeObjectDesc { - Oid id; + Oid id; /* LO's identifier */ + TransactionId xid; /* owning XID */ uint32 offset; /* current seek pointer */ int flags; /* locking info, etc */ /* flag bits: */ #define IFS_RDLOCK (1 << 0) #define IFS_WRLOCK (1 << 1) - - Relation heap_r; - Relation index_r; } LargeObjectDesc; @@ -67,6 +64,7 @@ typedef struct LargeObjectDesc */ /* inversion stuff in inv_api.c */ +extern void close_lo_relation(bool isCommit); extern LargeObjectDesc *inv_create(int flags); extern LargeObjectDesc *inv_open(Oid lobjId, int flags); extern void inv_close(LargeObjectDesc *obj_desc); |