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Diffstat (limited to 'src/backend/storage/itempos.h')
-rw-r--r-- | src/backend/storage/itempos.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/backend/storage/itempos.h b/src/backend/storage/itempos.h new file mode 100644 index 00000000000..c3b895ae075 --- /dev/null +++ b/src/backend/storage/itempos.h @@ -0,0 +1,44 @@ +/*------------------------------------------------------------------------- + * + * itempos.h-- + * Standard POSTGRES buffer page long item subposition definitions. + * + * + * Copyright (c) 1994, Regents of the University of California + * + * $Id: itempos.h,v 1.1.1.1 1996/07/09 06:21:53 scrappy Exp $ + * + *------------------------------------------------------------------------- + */ +#ifndef ITEMPOS_H +#define ITEMPOS_H + +#include "c.h" +#include "storage/buf.h" +#include "storage/itemid.h" + +typedef struct ItemSubpositionData { + Buffer op_db; + ItemId op_lpp; + char *op_cp; /* XXX */ + uint32 op_len; +} ItemSubpositionData; + +typedef ItemSubpositionData *ItemSubposition; + +/* + * PNOBREAK(OBJP, LEN) + * struct objpos *OBJP; + * unsigned LEN; + */ +#define PNOBREAK(OBJP, LEN) ((OBJP)->op_len >= LEN) + +/* + * PSKIP(OBJP, LEN) + * struct objpos *OBJP; + * unsigned LEN; + */ +#define PSKIP(OBJP, LEN)\ + { (OBJP)->op_cp += (LEN); (OBJP)->op_len -= (LEN); } + +#endif /* ITEMPOS_H */ |