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/**************************************************************************
*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 TUNGSTEN GRAPHICS 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
* Buffer validation.
*
* @author Jose Fonseca <jrfonseca@tungstengraphics.com>
*/
#include "pipe/p_compiler.h"
#include "pipe/p_error.h"
#include "util/u_memory.h"
#include "pipe/p_debug.h"
#include "pb_buffer.h"
#include "pb_buffer_fenced.h"
#include "pb_validate.h"
#define PB_VALIDATE_INITIAL_SIZE 1 /* 512 */
struct pb_validate
{
struct pb_buffer **buffers;
unsigned used;
unsigned size;
};
enum pipe_error
pb_validate_add_buffer(struct pb_validate *vl,
struct pb_buffer *buf)
{
assert(buf);
if(!buf)
return PIPE_ERROR;
/* We only need to store one reference for each buffer, so avoid storing
* consecutive references for the same buffer. It might not be the more
* common pasttern, but it is easy to implement.
*/
if(vl->used && vl->buffers[vl->used - 1] == buf) {
return PIPE_OK;
}
/* Grow the table */
if(vl->used == vl->size) {
unsigned new_size;
struct pb_buffer **new_buffers;
new_size = vl->size * 2;
if(!new_size)
return PIPE_ERROR_OUT_OF_MEMORY;
new_buffers = (struct pb_buffer **)REALLOC(vl->buffers,
vl->size*sizeof(struct pb_buffer *),
new_size*sizeof(struct pb_buffer *));
if(!new_buffers)
return PIPE_ERROR_OUT_OF_MEMORY;
memset(new_buffers + vl->size, 0, (new_size - vl->size)*sizeof(struct pb_buffer *));
vl->size = new_size;
vl->buffers = new_buffers;
}
assert(!vl->buffers[vl->used]);
pb_reference(&vl->buffers[vl->used], buf);
++vl->used;
return PIPE_OK;
}
enum pipe_error
pb_validate_validate(struct pb_validate *vl)
{
/* FIXME: go through each buffer, ensure its not mapped, its address is
* available -- requires a new pb_buffer interface */
return PIPE_OK;
}
void
pb_validate_fence(struct pb_validate *vl,
struct pipe_fence_handle *fence)
{
unsigned i;
for(i = 0; i < vl->used; ++i) {
buffer_fence(vl->buffers[i], fence);
pb_reference(&vl->buffers[i], NULL);
}
vl->used = 0;
}
void
pb_validate_destroy(struct pb_validate *vl)
{
unsigned i;
for(i = 0; i < vl->used; ++i)
pb_reference(&vl->buffers[i], NULL);
FREE(vl->buffers);
FREE(vl);
}
struct pb_validate *
pb_validate_create()
{
struct pb_validate *vl;
vl = CALLOC_STRUCT(pb_validate);
if(!vl)
return NULL;
vl->size = PB_VALIDATE_INITIAL_SIZE;
vl->buffers = (struct pb_buffer **)CALLOC(vl->size, sizeof(struct pb_buffer *));
if(!vl->buffers) {
FREE(vl);
return NULL;
}
return vl;
}
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