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Reorganize our CRC source files again.

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Now that we use CRC-32C in WAL and the control file, the "traditional" and
"legacy" CRC-32 variants are not used in any frontend programs anymore.
Move the code for those back from src/common to src/backend/utils/hash.

Also move the slicing-by-8 implementation (back) to src/port. This is in
preparation for next patch that will add another implementation that uses
Intel SSE 4.2 instructions to calculate CRC-32C, where available.
This commit is contained in:
Heikki Linnakangas
2015-04-14 17:03:42 +03:00
parent d577bb868d
commit 4f700bcd20
25 changed files with 211 additions and 181 deletions
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4
src/backend/utils/cache/relmapper.c vendored
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@ -86,7 +86,7 @@ typedef struct RelMapFile
int32 magic; /* always RELMAPPER_FILEMAGIC */
int32 num_mappings; /* number of valid RelMapping entries */
RelMapping mappings[MAX_MAPPINGS];
pg_crc32 crc; /* CRC of all above */
pg_crc32c crc; /* CRC of all above */
int32 pad; /* to make the struct size be 512 exactly */
} RelMapFile;
@ -626,7 +626,7 @@ load_relmap_file(bool shared)
{
RelMapFile *map;
char mapfilename[MAXPGPATH];
pg_crc32 crc;
pg_crc32c crc;
int fd;
if (shared)