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/**************************************************************************
*
* Copyright 2007-2008 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* \file
* Allocate buffers from two alternative buffer providers.
*
* \author Jose Fonseca <jfonseca@vmware.com>
*/
#include "pipe/p_compiler.h"
#include "util/u_debug.h"
#include "util/u_memory.h"
#include "pb_buffer.h"
#include "pb_bufmgr.h"
struct pb_alt_manager
{
struct pb_manager base;
struct pb_manager *provider1;
struct pb_manager *provider2;
};
static inline struct pb_alt_manager *
pb_alt_manager(struct pb_manager *mgr)
{
assert(mgr);
return (struct pb_alt_manager *)mgr;
}
static struct pb_buffer *
pb_alt_manager_create_buffer(struct pb_manager *_mgr,
pb_size size,
const struct pb_desc *desc)
{
struct pb_alt_manager *mgr = pb_alt_manager(_mgr);
struct pb_buffer *buf;
buf = mgr->provider1->create_buffer(mgr->provider1, size, desc);
if (buf)
return buf;
buf = mgr->provider2->create_buffer(mgr->provider2, size, desc);
return buf;
}
static void
pb_alt_manager_flush(struct pb_manager *_mgr)
{
struct pb_alt_manager *mgr = pb_alt_manager(_mgr);
assert(mgr->provider1->flush);
if(mgr->provider1->flush)
mgr->provider1->flush(mgr->provider1);
assert(mgr->provider2->flush);
if(mgr->provider2->flush)
mgr->provider2->flush(mgr->provider2);
}
static void
pb_alt_manager_destroy(struct pb_manager *mgr)
{
FREE(mgr);
}
struct pb_manager *
pb_alt_manager_create(struct pb_manager *provider1,
struct pb_manager *provider2)
{
struct pb_alt_manager *mgr;
if(!provider1 || !provider2)
return NULL;
mgr = CALLOC_STRUCT(pb_alt_manager);
if (!mgr)
return NULL;
mgr->base.destroy = pb_alt_manager_destroy;
mgr->base.create_buffer = pb_alt_manager_create_buffer;
mgr->base.flush = pb_alt_manager_flush;
mgr->provider1 = provider1;
mgr->provider2 = provider2;
return &mgr->base;
}
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