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From: Howard Chung <howardchung@google.com>
To: linux-bluetooth@vger.kernel.org, luiz.dentz@gmail.com
Cc: Howard Chung <howardchung@google.com>,
	Miao-chen Chou <mcchou@chromium.org>
Subject: [Bluez PATCH v1 01/14] lib: add hash functions for bt_uuid_t
Date: Thu,  8 Jul 2021 14:23:01 +0800	[thread overview]
Message-ID: <20210708142059.Bluez.v1.1.I69278fab3bf86adb578c5cba0a39e5bcf7f9581e@changeid> (raw)
In-Reply-To: <20210708062314.245754-1-howardchung@google.com>

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.

Reviewed-by: Miao-chen Chou <mcchou@chromium.org>
---

 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


  reply	other threads:[~2021-07-08  6:23 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-08  6:23 [Bluez PATCH v1 00/14] Howard Chung
2021-07-08  6:23 ` Howard Chung [this message]
2021-07-08  6:36   ` [Bluez,v1,01/14] lib: add hash functions for bt_uuid_t bluez.test.bot
2021-07-09  5:21   ` [Bluez PATCH v1 01/14] " Luiz Augusto von Dentz
2021-07-12  3:20     ` Yun-hao Chung
2021-07-08  6:23 ` [Bluez PATCH v1 02/14] unit: add uuid unit tests Howard Chung
2021-07-08  6:23 ` [Bluez PATCH v1 03/14] core: add is_allowed property in btd_service Howard Chung
2021-07-08  6:23 ` [Bluez PATCH v1 04/14] core: add adapter and device allowed_uuid functions Howard Chung
2021-07-08  6:23 ` [Bluez PATCH v1 05/14] core: add device state and state callbacks Howard Chung
2021-07-09  5:34   ` Luiz Augusto von Dentz
2021-07-12  3:56     ` Yun-hao Chung
2021-07-08  6:23 ` [Bluez PATCH v1 06/14] audio: Remove Media1 interface when a2dp source disallowed Howard Chung
2021-07-09  5:49   ` Luiz Augusto von Dentz
2021-07-12  8:16     ` Yun-hao Chung
2021-07-12 16:37       ` Luiz Augusto von Dentz
2021-07-08  6:23 ` [Bluez PATCH v1 07/14] plugins: add a new plugin for admin_policy Howard Chung
2021-07-08  6:23 ` [Bluez PATCH v1 08/14] plugins/admin_policy: add admin_policy adapter driver Howard Chung
2021-07-08  6:23 ` [Bluez PATCH v1 09/14] plugins/admin_policy: add ServiceAllowList method Howard Chung
2021-07-09  6:01   ` Luiz Augusto von Dentz
2021-07-12  9:09     ` Yun-hao Chung
2021-07-12 16:41       ` Luiz Augusto von Dentz
2021-07-08  6:23 ` [Bluez PATCH v1 10/14] plugins/admin_policy: add ServiceAllowList property Howard Chung
2021-07-08  6:23 ` [Bluez PATCH v1 11/14] plugins/admin_policy: add device state callback Howard Chung
2021-07-08  6:23 ` [Bluez PATCH v1 12/14] plugins/admin_policy: add AffectedByPolicy property Howard Chung
2021-07-08  6:23 ` [Bluez PATCH v1 13/14] plugins/admin_policy: persist policy settings Howard Chung
2021-07-08  6:23 ` [Bluez PATCH v1 14/14] core: fix a possible crash when removing devices Howard Chung

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