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Add pg_atomic_unlocked_write_u64

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The 64bit equivalent of pg_atomic_unlocked_write_u32(), to be used in an
upcoming patch converting BufferDesc.state into a 64bit atomic.

Reviewed-by: Melanie Plageman <melanieplageman@gmail.com>
Discussion: https://postgr.es/m/fvfmkr5kk4nyex56ejgxj3uzi63isfxovp2biecb4bspbjrze7@az2pljabhnff
This commit is contained in:
Andres Freund
2025-12-03 18:38:20 -05:00
parent 156680055d
commit 7902a47c20
2 changed files with 19 additions and 0 deletions
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10
src/include/port/atomics.h
View File

@@ -488,6 +488,16 @@ pg_atomic_write_u64(volatile pg_atomic_uint64 *ptr, uint64 val)
pg_atomic_write_u64_impl(ptr, val);
}
static inline void
pg_atomic_unlocked_write_u64(volatile pg_atomic_uint64 *ptr, uint64 val)
{
#ifndef PG_HAVE_ATOMIC_U64_SIMULATION
AssertPointerAlignment(ptr, 8);
#endif
pg_atomic_unlocked_write_u64_impl(ptr, val);
}
static inline void
pg_atomic_write_membarrier_u64(volatile pg_atomic_uint64 *ptr, uint64 val)
{

9
src/include/port/atomics/generic.h
View File

@@ -297,6 +297,15 @@ pg_atomic_write_u64_impl(volatile pg_atomic_uint64 *ptr, uint64 val)
#endif /* PG_HAVE_8BYTE_SINGLE_COPY_ATOMICITY && !PG_HAVE_ATOMIC_U64_SIMULATION */
#endif /* PG_HAVE_ATOMIC_WRITE_U64 */
#ifndef PG_HAVE_ATOMIC_UNLOCKED_WRITE_U64
#define PG_HAVE_ATOMIC_UNLOCKED_WRITE_U64
static inline void
pg_atomic_unlocked_write_u64_impl(volatile pg_atomic_uint64 *ptr, uint64 val)
{
ptr->value = val;
}
#endif
#ifndef PG_HAVE_ATOMIC_READ_U64
#define PG_HAVE_ATOMIC_READ_U64