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