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/**************************************************************************
*
* Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
* 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 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
* THE COPYRIGHT HOLDERS, AUTHORS 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.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
*
**************************************************************************/
/**
* \file
* A buffer manager that wraps buffers in fenced buffers.
*
* \author José Fonseca <jrfonseca@tungstengraphics.dot.com>
*/
#include <assert.h>
#include <stdlib.h>
#include "pb_buffer.h"
#include "pb_buffer_fenced.h"
#include "pb_bufmgr.h"
struct fenced_buffer_manager
{
struct buffer_manager base;
struct buffer_manager *provider;
struct fenced_buffer_list *fenced_list;
};
static inline struct fenced_buffer_manager *
fenced_buffer_manager(struct buffer_manager *mgr)
{
assert(mgr);
return (struct fenced_buffer_manager *)mgr;
}
static struct pipe_buffer *
fenced_bufmgr_create_buffer(struct buffer_manager *mgr, size_t size)
{
struct fenced_buffer_manager *fenced_mgr = fenced_buffer_manager(mgr);
struct pipe_buffer *buf;
struct pipe_buffer *fenced_buf;
/* check for free buffers before allocating new ones */
fenced_buffer_list_check_free(fenced_mgr->fenced_list, 0);
buf = fenced_mgr->provider->create_buffer(fenced_mgr->provider, size);
if(!buf) {
/* try harder to get a buffer */
fenced_buffer_list_check_free(fenced_mgr->fenced_list, 1);
buf = fenced_mgr->provider->create_buffer(fenced_mgr->provider, size);
if(!buf) {
/* give up */
return NULL;
}
}
fenced_buf = fenced_buffer_create(fenced_mgr->fenced_list, buf);
if(!fenced_buf) {
buffer_release(buf);
}
return fenced_buf;
}
static void
fenced_bufmgr_destroy(struct buffer_manager *mgr)
{
struct fenced_buffer_manager *fenced_mgr = fenced_buffer_manager(mgr);
fenced_buffer_list_destroy(fenced_mgr->fenced_list);
fenced_mgr->provider->destroy(fenced_mgr->provider);
free(fenced_mgr);
}
struct buffer_manager *
fenced_bufmgr_create(struct buffer_manager *provider,
struct pipe_winsys *winsys)
{
struct fenced_buffer_manager *fenced_mgr;
fenced_mgr = (struct fenced_buffer_manager *)calloc(1, sizeof(*fenced_mgr));
if (!fenced_mgr)
return NULL;
fenced_mgr->base.destroy = fenced_bufmgr_destroy;
fenced_mgr->base.create_buffer = fenced_bufmgr_create_buffer;
fenced_mgr->provider = provider;
fenced_mgr->fenced_list = fenced_buffer_list_create(winsys);
if(!fenced_mgr->fenced_list) {
free(fenced_mgr);
return NULL;
}
return &fenced_mgr->base;
}
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