diff options
Diffstat (limited to 'src/include/access/toast_compression.h')
| -rw-r--r-- | src/include/access/toast_compression.h | 24 |
1 files changed, 6 insertions, 18 deletions
diff --git a/src/include/access/toast_compression.h b/src/include/access/toast_compression.h index 9e2c1cbe1a6..c992ece4c4a 100644 --- a/src/include/access/toast_compression.h +++ b/src/include/access/toast_compression.h @@ -23,16 +23,16 @@ extern int default_toast_compression; /* - * Built-in compression method-id. The toast compression header will store + * Built-in compression method ID. The toast compression header will store * this in the first 2 bits of the raw length. These built-in compression - * method-id are directly mapped to the built-in compression methods. + * method IDs are directly mapped to the built-in compression methods. * * Don't use these values for anything other than understanding the meaning * of the raw bits from a varlena; in particular, if the goal is to identify * a compression method, use the constants TOAST_PGLZ_COMPRESSION, etc. * below. We might someday support more than 4 compression methods, but * we can never have more than 4 values in this enum, because there are - * only 2 bits available in the places where this is used. + * only 2 bits available in the places where this is stored. */ typedef enum ToastCompressionId { @@ -42,8 +42,9 @@ typedef enum ToastCompressionId } ToastCompressionId; /* - * Built-in compression methods. pg_attribute will store this in the - * attcompression column. + * Built-in compression methods. pg_attribute will store these in the + * attcompression column. In attcompression, InvalidCompressionMethod + * denotes the default behavior. */ #define TOAST_PGLZ_COMPRESSION 'p' #define TOAST_LZ4_COMPRESSION 'l' @@ -51,19 +52,6 @@ typedef enum ToastCompressionId #define CompressionMethodIsValid(cm) ((cm) != InvalidCompressionMethod) -#define IsStorageCompressible(storage) ((storage) != TYPSTORAGE_PLAIN && \ - (storage) != TYPSTORAGE_EXTERNAL) - -/* - * GetDefaultToastCompression -- get the default toast compression method - * - * This exists to hide the use of the default_toast_compression GUC variable. - */ -static inline char -GetDefaultToastCompression(void) -{ - return (char) default_toast_compression; -} /* pglz compression/decompression routines */ extern struct varlena *pglz_compress_datum(const struct varlena *value); |