Re: [PATCH spice-server v4 2/3] red-channel: Separate RedChannelCapabilities

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> 
> On Thu, Mar 02, 2017 at 12:30:25PM +0000, Frediano Ziglio wrote:
> > Add function to initialize and destroy this type.
> > Add GType type for boxing it.
> > These changes a in preparation for next patch.
> > 
> > Signed-off-by: Frediano Ziglio <fziglio@xxxxxxxxxx>
> > ---
> >  server/Makefile.am                |  2 ++
> >  server/red-channel-capabilities.c | 68
> >  +++++++++++++++++++++++++++++++++++++++
> >  server/red-channel-capabilities.h | 51 +++++++++++++++++++++++++++++
> >  server/red-channel.h              |  8 +----
> >  4 files changed, 122 insertions(+), 7 deletions(-)
> >  create mode 100644 server/red-channel-capabilities.c
> >  create mode 100644 server/red-channel-capabilities.h
> > 
> > diff --git a/server/Makefile.am b/server/Makefile.am
> > index a043660..49c0822 100644
> > --- a/server/Makefile.am
> > +++ b/server/Makefile.am
> > @@ -101,6 +101,8 @@ libserver_la_SOURCES =				\
> >  	red-channel.h				\
> >  	red-channel-client.c			\
> >  	red-channel-client.h			\
> > +	red-channel-capabilities.c		\
> > +	red-channel-capabilities.h		\
> >  	red-client.c				\
> >  	red-client.h				\
> >  	red-common.h				\
> > diff --git a/server/red-channel-capabilities.c
> > b/server/red-channel-capabilities.c
> > new file mode 100644
> > index 0000000..eacb338
> > --- /dev/null
> > +++ b/server/red-channel-capabilities.c
> > @@ -0,0 +1,68 @@
> > +/*
> > +   Copyright (C) 2017 Red Hat, Inc.
> > +
> > +   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, see
> > <http://www.gnu.org/licenses/>.
> > +*/
> > +#ifdef HAVE_CONFIG_H
> > +#include <config.h>
> > +#endif
> > +
> > +#include <string.h>
> > +#include <common/mem.h>
> > +#include <common/macros.h>
> > +
> > +#include "red-channel-capabilities.h"
> > +
> > +GType red_channel_capabilities_type;
> > +
> > +void red_channel_capabilities_init(RedChannelCapabilities *dest,
> > +                                   const RedChannelCapabilities *caps)
> > +{
> > +    *dest = *caps;
> > +    if (caps->common_caps) {
> > +        dest->common_caps = spice_memdup(caps->common_caps,
> > +                                         caps->num_common_caps *
> > sizeof(uint32_t));
> > +    }
> > +    if (caps->num_caps) {
> > +        dest->caps = spice_memdup(caps->caps, caps->num_caps *
> > sizeof(uint32_t));
> > +    }
> > +}
> > +
> > +void red_channel_capabilities_reset(RedChannelCapabilities *caps)
> > +{
> > +    free(caps->common_caps);
> > +    free(caps->caps);
> > +    memset(caps, 0, sizeof(*caps));
> > +}
> > +
> > +static RedChannelCapabilities *red_channel_capabilities_dup(const
> > RedChannelCapabilities *caps)
> > +{
> > +    RedChannelCapabilities *res = spice_new(RedChannelCapabilities, 1);
> > +    red_channel_capabilities_init(res, caps);
> > +    return res;
> > +}
> > +
> > +static void red_channel_capabilities_free(RedChannelCapabilities *caps)
> > +{
> > +    red_channel_capabilities_reset(caps);
> > +    free(caps);
> > +}
> > +
> > +SPICE_CONSTRUCTOR_FUNC(red_channel_capabilities_construct)
> > +{
> > +    red_channel_capabilities_type =
> > +        g_boxed_type_register_static("red_channel_capabilities_type",
> 
> Nit as well, but "RedChannelCapabilities"? Or you prefer to keep the
> same name as the GType variable that you use?
> 

Honestly I was going to use a GUID like Windows !
No preference, as long as it's unique, "RedChannelCapabilities" is fine.

> > +                                     (GBoxedCopyFunc)
> > red_channel_capabilities_dup,
> > +                                     (GBoxedFreeFunc)
> > red_channel_capabilities_free);
> > +}
> > diff --git a/server/red-channel-capabilities.h
> > b/server/red-channel-capabilities.h
> > new file mode 100644
> > index 0000000..299409d
> > --- /dev/null
> > +++ b/server/red-channel-capabilities.h
> > @@ -0,0 +1,51 @@
> > +/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
> > +/*
> > +   Copyright (C) 2009-2017 Red Hat, Inc.
> > +
> > +   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, see
> > <http://www.gnu.org/licenses/>.
> > +*/
> > +
> > +#ifndef RED_CHANNEL_CAPABILITIES_H_
> > +#define RED_CHANNEL_CAPABILITIES_H_
> > +
> > +#include <stdint.h>
> > +#include <glib-object.h>
> > +
> > +G_BEGIN_DECLS
> > +
> > +/* Holds channel capabilities.
> > + * Channel capabilities are composed by a common part
> > + * and a specific one. */
> > +typedef struct RedChannelCapabilities {
> > +    int num_common_caps;
> > +    uint32_t *common_caps;
> > +    int num_caps;
> > +    uint32_t *caps;
> > +} RedChannelCapabilities;
> > +
> > +/* Initialize the structure based on a previous one. */
> > +void red_channel_capabilities_init(RedChannelCapabilities *dest,
> > +                                   const RedChannelCapabilities *caps);
> > +
> > +/* Reset capabilities.
> > + * All resources are freed by this function. */
> > +void red_channel_capabilities_reset(RedChannelCapabilities *caps);
> > +
> > +/* GObject type that can be used to box RedChannelCapabilities */
> > +extern GType red_channel_capabilities_type;
> > +#define TYPE_RED_CHANNEL_CAPABILITIES red_channel_capabilities_type
> 
> RED_TYPE_CHANNEL_CAPABILITIES, similarly to RED_TYPE_CHANNEL,
> RED_TYPE_CHANNEL_CLIENT, ...
> 

If you do some grep the TYPE_xxx win (not much).

> 
> Acked-by: Christophe Fergeau <cfergeau@xxxxxxxxxx>
> 
> Christophe
> 

I'll wait if Jonathon has some comments, he had lot of suggestions.

Frediano
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