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Change dynahash.c and hsearch.h to use int64 instead of long

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This code was relying on "long", which is signed 8 bytes everywhere
except on Windows where it is 4 bytes, that could potentially expose it
to overflows, even if the current uses in the code are fine as far as I
know.  This code is now able to rely on the same sizeof() variable
everywhere, with int64.  long was used for sizes, partition counts and
entry counts.

Some callers of the dynahash.c routines used long declarations, that can
be cleaned up to use int64 instead.  There was one shortcut based on
SIZEOF_LONG, that can be removed.  long is entirely removed from
dynahash.c and hsearch.h.

Similar work was done in b1e5c9fa9a.

Reviewed-by: Peter Eisentraut <peter@eisentraut.org>
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://postgr.es/m/aKQYp-bKTRtRauZ6@paquier.xyz
This commit is contained in:
Michael Paquier
2025-08-22 11:59:02 +09:00
parent ef03ea01fe
commit 13b935cd52
9 changed files with 61 additions and 65 deletions
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2
src/include/storage/shmem.h
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@@ -35,7 +35,7 @@ extern void *ShmemAllocNoError(Size size);
extern void *ShmemAllocUnlocked(Size size);
extern bool ShmemAddrIsValid(const void *addr);
extern void InitShmemIndex(void);
extern HTAB *ShmemInitHash(const char *name, long init_size, long max_size,
extern HTAB *ShmemInitHash(const char *name, int64 init_size, int64 max_size,
HASHCTL *infoP, int hash_flags);
extern void *ShmemInitStruct(const char *name, Size size, bool *foundPtr);
extern Size add_size(Size s1, Size s2);