Hi Howard,
On Wed, Jul 7, 2021 at 11:23 PM Howard Chung <howardchung@xxxxxxxxxx> wrote:
>
> This adds function GHashFunc and GEqualFunc for bt_uuid_t.
> With these functions, we can add uuids into a GHashTable with bt_uuid_t
> format.
We will likely move away from GLib dependency so I wouldn't want to
introduce a dependency to it specially as part of libbluetooth.
> Reviewed-by: Miao-chen Chou <mcchou@xxxxxxxxxxxx>
> ---
>
> lib/uuid.c | 27 +++++++++++++++++++++++++++
> lib/uuid.h | 3 +++
> 2 files changed, 30 insertions(+)
>
> diff --git a/lib/uuid.c b/lib/uuid.c
> index 3d97dc8359c7..a09f5c428b87 100644
> --- a/lib/uuid.c
> +++ b/lib/uuid.c
> @@ -16,6 +16,7 @@
> #include <string.h>
> #include <stdlib.h>
> #include <errno.h>
> +#include <glib.h>
>
> #include "lib/bluetooth.h"
> #include "uuid.h"
> @@ -120,6 +121,32 @@ int bt_uuid_cmp(const bt_uuid_t *uuid1, const bt_uuid_t *uuid2)
> return bt_uuid128_cmp(&u1, &u2);
> }
>
> +guint bt_uuid_hash(gconstpointer key)
> +{
> + const bt_uuid_t *uuid = key;
> + bt_uuid_t uuid_128;
> + uint64_t *val;
> +
> + if (!uuid)
> + return 0;
> +
> + bt_uuid_to_uuid128(uuid, &uuid_128);
> + val = (uint64_t *)&uuid_128.value.u128;
> +
> + return g_int64_hash(val) ^ g_int64_hash(val+1);
> +}
> +
> +gboolean bt_uuid_equal(gconstpointer v1, gconstpointer v2)
> +{
> + const bt_uuid_t *uuid1 = v1;
> + const bt_uuid_t *uuid2 = v2;
> +
> + if (!uuid1 || !uuid2)
> + return !uuid1 && !uuid2;
> +
> + return bt_uuid_cmp(uuid1, uuid2) == 0;
> +}
> +
> /*
> * convert the UUID to string, copying a maximum of n characters.
> */
> diff --git a/lib/uuid.h b/lib/uuid.h
> index 1a4029b68730..e47ccccb9fd2 100644
> --- a/lib/uuid.h
> +++ b/lib/uuid.h
> @@ -17,6 +17,7 @@ extern "C" {
> #endif
>
> #include <stdint.h>
> +#include <glib.h>
>
> #define GENERIC_AUDIO_UUID "00001203-0000-1000-8000-00805f9b34fb"
>
> @@ -167,6 +168,8 @@ int bt_uuid128_create(bt_uuid_t *btuuid, uint128_t value);
>
> int bt_uuid_cmp(const bt_uuid_t *uuid1, const bt_uuid_t *uuid2);
> void bt_uuid_to_uuid128(const bt_uuid_t *src, bt_uuid_t *dst);
> +guint bt_uuid_hash(gconstpointer key);
> +gboolean bt_uuid_equal(gconstpointer v1, gconstpointer v2);
>
> #define MAX_LEN_UUID_STR 37
>
> --
> 2.32.0.93.g670b81a890-goog
>
--
Luiz Augusto von Dentz
