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util/hash_table: _mesa_hash_table_create_u32_keys() 

Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10673>
This commit is contained in:
Mike Blumenkrantz 2021-05-01 15:08:31 -04:00 committed by Marge Bot
parent e5fc2064fc
commit c449a8a2c1
2 changed files with 23 additions and 0 deletions
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20
src/util/hash_table.c
View File

@ -191,6 +191,26 @@ _mesa_hash_table_create(void *mem_ctx,
return ht;
}
static uint32_t
key_u32_hash(const void *key)
{
uint32_t u = (uint32_t)(uintptr_t)key;
return _mesa_hash_uint(&u);
}
static bool
key_u32_equals(const void *a, const void *b)
{
return (uint32_t)(uintptr_t)a == (uint32_t)(uintptr_t)b;
}
/* key == 0 and key == deleted_key are not allowed */
struct hash_table *
_mesa_hash_table_create_u32_keys(void *mem_ctx)
{
return _mesa_hash_table_create(mem_ctx, key_u32_hash, key_u32_equals);
}
struct hash_table *
_mesa_hash_table_clone(struct hash_table *src, void *dst_mem_ctx)
{

3
src/util/hash_table.h
View File

@ -72,6 +72,9 @@ _mesa_hash_table_init(struct hash_table *ht,
bool (*key_equals_function)(const void *a,
const void *b));
struct hash_table *
_mesa_hash_table_create_u32_keys(void *mem_ctx);
struct hash_table *
_mesa_hash_table_clone(struct hash_table *src, void *dst_mem_ctx);
void _mesa_hash_table_destroy(struct hash_table *ht,