Re: [RFC 01/16] gatt: Add skeleton of gatt-db

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Hi Marcin,

On Mon, Apr 14, 2014 at 4:15 PM, Marcin Kraglak
<marcin.kraglak@xxxxxxxxx> wrote:
> Hi Claudio,
>
> On 14 April 2014 16:12, Claudio Takahasi <claudio.takahasi@xxxxxxxxxxxxx> wrote:
>> Hi Marcin,
>>
>> On Wed, Apr 9, 2014 at 4:06 AM, Marcin Kraglak <marcin.kraglak@xxxxxxxxx> wrote:
>>> This change adds new() and destroy() fuctions for gatt_db,
>>> which will be used for storing local attributes.
>>> ---
>>>  android/Android.mk   |  1 +
>>>  android/Makefile.am  |  1 +
>>>  src/shared/gatt-db.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
>>>  src/shared/gatt-db.h | 27 +++++++++++++++++++++++++++
>>>  4 files changed, 76 insertions(+)
>>>  create mode 100644 src/shared/gatt-db.c
>>>  create mode 100644 src/shared/gatt-db.h
>>>
>>> diff --git a/android/Android.mk b/android/Android.mk
>>> index 5f4e70c..4c9cfb5 100644
>>> --- a/android/Android.mk
>>> +++ b/android/Android.mk
>>> @@ -51,6 +51,7 @@ LOCAL_SRC_FILES := \
>>>         bluez/src/shared/queue.c \
>>>         bluez/src/shared/ringbuf.c \
>>>         bluez/src/shared/hfp.c \
>>> +       bluez/src/shared/gatt-db.c \
>>>         bluez/src/shared/io-glib.c \
>>>         bluez/src/sdpd-database.c \
>>>         bluez/src/sdpd-service.c \
>>> diff --git a/android/Makefile.am b/android/Makefile.am
>>> index c51cce2..70e1dec 100644
>>> --- a/android/Makefile.am
>>> +++ b/android/Makefile.am
>>> @@ -29,6 +29,7 @@ android_bluetoothd_SOURCES = android/main.c \
>>>                                 src/shared/mgmt.h src/shared/mgmt.c \
>>>                                 src/shared/ringbuf.h src/shared/ringbuf.c \
>>>                                 src/shared/hfp.h src/shared/hfp.c \
>>> +                               src/shared/gatt-db.h src/shared/gatt-db.c \
>>>                                 android/bluetooth.h android/bluetooth.c \
>>>                                 android/hidhost.h android/hidhost.c \
>>>                                 android/ipc-common.h \
>>> diff --git a/src/shared/gatt-db.c b/src/shared/gatt-db.c
>>> new file mode 100644
>>> index 0000000..e56b381
>>> --- /dev/null
>>> +++ b/src/shared/gatt-db.c
>>> @@ -0,0 +1,47 @@
>>> +/*
>>> + *
>>> + *  BlueZ - Bluetooth protocol stack for Linux
>>> + *
>>> + *  Copyright (C) 2014  Intel Corporation. All rights reserved.
>>> + *
>>> + *
>>> + *  This library is free software; you can redistribute it and/or
>>> + *  modify it under the terms of the GNU Lesser General Public
>>> + *  License as published by the Free Software Foundation; either
>>> + *  version 2.1 of the License, or (at your option) any later version.
>>> + *
>>> + *  This library is distributed in the hope that it will be useful,
>>> + *  but WITHOUT ANY WARRANTY; without even the implied warranty of
>>> + *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
>>> + *  Lesser General Public License for more details.
>>> + *
>>> + *  You should have received a copy of the GNU Lesser General Public
>>> + *  License along with this library; if not, write to the Free Software
>>> + *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
>>> + *
>>> + */
>>> +
>>> +#include "src/shared/util.h"
>>> +#include "src/shared/gatt-db.h"
>>> +
>>> +struct gatt_db {
>>> +       uint16_t next_handle;
>>> +};
>>> +
>>> +struct gatt_db *gatt_db_new(void)
>>> +{
>>> +       struct gatt_db *db;
>>> +
>>> +       db = new0(struct gatt_db, 1);
>>> +       if (!db)
>>> +               return NULL;
>>> +
>>> +       db->next_handle = 0x0001;
>>> +
>>> +       return db;
>>> +}
>>
>> Are you considering to use the same function to allocate/create a
>> database to represent the remote "virtual" database?
>> My point is: the same infra-structure could be used to represent a
>> local database(per adapter maybe) or remote database.
>>
>
> We could add argument to new() like type: remote or local. What you
> think about it?

My intention was only to raise the possibility of having a common
database for both: client and servers.
We don't need to support it now, but we need to define a flexible
architecture to allow extending it later.

Claudio
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