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Put all the prototypes for hashfn.c into the same header file.

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Previously, some of the prototypes for functions in hashfn.c were
in utils/hashutils.h and others were in utils/hsearch.h, but that
is confusing and has no particular benefit.

Patch by me, reviewed by Suraj Kharage and Mark Dilger.

Discussion: http://postgr.es/m/CA+TgmoaRiG4TXND8QuM6JXFRkM_1wL2ZNhzaUKsuec9-4yrkgw@mail.gmail.com
This commit is contained in:
Robert Haas 2020-02-24 17:22:45 +05:30
parent 07b95c3d83
commit 9341c783cc
4 changed files with 12 additions and 14 deletions
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2
src/backend/lib/dshash.c
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@ -35,7 +35,7 @@
#include "storage/ipc.h" #include "storage/ipc.h"
#include "storage/lwlock.h" #include "storage/lwlock.h"
#include "utils/dsa.h" #include "utils/dsa.h"
#include "utils/hsearch.h" #include "utils/hashutils.h"
#include "utils/memutils.h" #include "utils/memutils.h"
/* /*

1
src/backend/utils/hash/dynahash.c
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@ -89,6 +89,7 @@
#include "storage/shmem.h" #include "storage/shmem.h"
#include "storage/spin.h" #include "storage/spin.h"
#include "utils/dynahash.h" #include "utils/dynahash.h"
#include "utils/hashutils.h"
#include "utils/memutils.h" #include "utils/memutils.h"

6
src/include/utils/hashutils.h
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@ -26,6 +26,12 @@ extern Datum hash_any_extended(const unsigned char *k,
extern Datum hash_uint32(uint32 k); extern Datum hash_uint32(uint32 k);
extern Datum hash_uint32_extended(uint32 k, uint64 seed); extern Datum hash_uint32_extended(uint32 k, uint64 seed);
extern uint32 string_hash(const void *key, Size keysize);
extern uint32 tag_hash(const void *key, Size keysize);
extern uint32 uint32_hash(const void *key, Size keysize);
#define oid_hash uint32_hash /* Remove me eventually */
/* /*
* Combine two 32-bit hash values, resulting in another hash value, with * Combine two 32-bit hash values, resulting in another hash value, with
* decent bit mixing. * decent bit mixing.

17
src/include/utils/hsearch.h
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@ -118,6 +118,10 @@ typedef struct
/* /*
* prototypes for functions in dynahash.c * prototypes for functions in dynahash.c
*
* Note: It is deprecated for callers of hash_create to explicitly specify
* string_hash, tag_hash, uint32_hash, or oid_hash. Just set HASH_BLOBS or
* not. Use HASH_FUNCTION only when you want something other than those.
*/ */
extern HTAB *hash_create(const char *tabname, long nelem, extern HTAB *hash_create(const char *tabname, long nelem,
HASHCTL *info, int flags); HASHCTL *info, int flags);
@ -142,17 +146,4 @@ extern Size hash_get_shared_size(HASHCTL *info, int flags);
extern void AtEOXact_HashTables(bool isCommit); extern void AtEOXact_HashTables(bool isCommit);
extern void AtEOSubXact_HashTables(bool isCommit, int nestDepth); extern void AtEOSubXact_HashTables(bool isCommit, int nestDepth);
/*
* prototypes for functions in hashfn.c
*
* Note: It is deprecated for callers of hash_create to explicitly specify
* string_hash, tag_hash, uint32_hash, or oid_hash. Just set HASH_BLOBS or
* not. Use HASH_FUNCTION only when you want something other than those.
*/
extern uint32 string_hash(const void *key, Size keysize);
extern uint32 tag_hash(const void *key, Size keysize);
extern uint32 uint32_hash(const void *key, Size keysize);
#define oid_hash uint32_hash /* Remove me eventually */
#endif /* HSEARCH_H */ #endif /* HSEARCH_H */