diff options
| author | Jan Wieck | 2000-07-03 23:10:14 +0000 |
|---|---|---|
| committer | Jan Wieck | 2000-07-03 23:10:14 +0000 |
| commit | 97f1f5e076ec50e46118e765967ef8af28c040a8 (patch) | |
| tree | 3ca89c0ff7785b939bac7765cbd05a3325aad7bf /src/include/postgres.h | |
| parent | 406f8f0beaea39cb0f47cf4e4bd53388759e7b35 (diff) | |
TOAST
WARNING: This is actually broken - we have self-deadlocks
due to concurrent changes in buffer management.
Vadim and me are working on it.
Jan
Diffstat (limited to 'src/include/postgres.h')
| -rw-r--r-- | src/include/postgres.h | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/src/include/postgres.h b/src/include/postgres.h index 076e13e50c..0902b47d28 100644 --- a/src/include/postgres.h +++ b/src/include/postgres.h @@ -71,8 +71,12 @@ struct varlena char vl_dat[1]; }; +#define TUPLE_TOASTER_ACTIVE + +#ifndef TUPLE_TOASTER_ACTIVE #define VARSIZE(PTR) (((struct varlena *)(PTR))->vl_len) #define VARDATA(PTR) (((struct varlena *)(PTR))->vl_dat) +#endif #define VARHDRSZ ((int32) sizeof(int32)) /* @@ -89,8 +93,6 @@ typedef struct varlena VarChar; /* var-length char, ie SQL varchar(n) */ * Proposed new layout for variable length attributes * DO NOT USE YET - Jan */ -#undef TUPLE_TOASTER_ACTIVE -#undef TUPLE_TOASTER_ALL_TYPES #ifdef TUPLE_TOASTER_ACTIVE typedef struct varattrib @@ -102,14 +104,17 @@ typedef struct varattrib struct { int32 va_rawsize; /* Plain data size */ + char va_data[1]; /* Compressed data */ } va_compressed; /* Compressed stored attribute */ struct { int32 va_rawsize; /* Plain data size */ + int32 va_extsize; /* External saved size */ Oid va_valueid; /* Unique identifier of value */ - Oid va_longrelid; /* RelID where to find chunks */ - Oid va_rowid; /* Main tables row Oid */ + Oid va_toastrelid; /* RelID where to find chunks */ + Oid va_toastidxid; /* Main tables row Oid */ + Oid va_rowid; /* Referencing row Oid */ int16 va_attno; /* Main tables attno */ } va_external;/* External stored attribute */ @@ -117,14 +122,18 @@ typedef struct varattrib } va_content; } varattrib; -#define VARATT_FLAG_EXTERNAL 0x8000 -#define VARATT_FLAG_COMPRESSED 0x4000 -#define VARATT_MASK_FLAGS 0xc000 -#define VARATT_MASK_SIZE 0x3fff +#define VARATT_FLAG_EXTERNAL 0x80000000 +#define VARATT_FLAG_COMPRESSED 0x40000000 +#define VARATT_MASK_FLAGS 0xc0000000 +#define VARATT_MASK_SIZE 0x3fffffff #define VARATT_SIZEP(_PTR) (((varattrib *)(_PTR))->va_header) #define VARATT_SIZE(PTR) (VARATT_SIZEP(PTR) & VARATT_MASK_SIZE) #define VARATT_DATA(PTR) (((varattrib *)(PTR))->va_content.va_data) +#define VARATT_CDATA(PTR) (((varattrib *)(PTR))->va_content.va_compressed.va_data) + +#define VARSIZE(__PTR) VARATT_SIZE(__PTR) +#define VARDATA(__PTR) VARATT_DATA(__PTR) #define VARATT_IS_EXTENDED(PTR) \ ((VARATT_SIZEP(PTR) & VARATT_MASK_FLAGS) != 0) @@ -142,12 +151,12 @@ typedef struct varattrib extern varattrib *heap_tuple_untoast_attr(varattrib * attr); #define VARATT_GETPLAIN(_ARG,_VAR) { \ - if (VARATTR_IS_EXTENDED(_ARG)) \ + if (VARATT_IS_EXTENDED(_ARG)) \ (_VAR) = (void *)heap_tuple_untoast_attr(_ARG); \ else \ - (_VAR) = (_ARG); \ + (_VAR) = (void *)(_ARG); \ } -#define VARATT_FREE(_ARG,VAR) do { \ +#define VARATT_FREE(_ARG,_VAR) do { \ if ((void *)(_VAR) != (void *)(_ARG)) \ pfree((void *)(_VAR)); \ } while (0) |