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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 "pipe/p_util.h"
#include "pipe/p_debug.h"
#include "util/u_hash_table.h"
#include "pb_buffer.h"
#include "pb_buffer_fenced.h"
struct pb_validate
{
struct hash_table *buffer_table;
};
static unsigned buffer_table_hash(void *pb_buf)
{
return (unsigned)(uintptr_t)pb_buf;
}
static int buffer_table_compare(void *pb_buf1, void *pb_buf2)
{
return (char *)pb_buf2 - (char *)pb_buf1;
}
enum pipe_error
pb_validate_add_buffer(struct pb_validate *vl,
struct pb_buffer *buf)
{
enum pipe_error ret;
assert(buf);
if(!buf)
return PIPE_ERROR;
if(!hash_table_get(vl->buffer_table, buf)) {
struct pb_buffer *tmp = NULL;
ret = hash_table_set(vl->buffer_table, buf, buf);
if(ret != PIPE_OK)
return ret;
/* Increment reference count */
pb_reference(&tmp, buf);
}
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;
}
struct pb_validate_fence_data {
struct pb_validate *vl;
struct pipe_fence_handle *fence;
};
static enum pipe_error
pb_validate_fence_cb(void *key, void *value, void *_data)
{
struct pb_buffer *buf = (struct pb_buffer *)key;
struct pb_validate_fence_data *data = (struct pb_validate_fence_data *)_data;
struct pb_validate *vl = data->vl;
struct pipe_fence_handle *fence = data->fence;
assert(value == key);
buffer_fence(buf, fence);
/* Decrement the reference count -- table entry destroyed later */
pb_reference(&buf, NULL);
return PIPE_OK;
}
void
pb_validate_fence(struct pb_validate *vl,
struct pipe_fence_handle *fence)
{
struct pb_validate_fence_data data;
data.vl = vl;
data.fence = fence;
hash_table_foreach(vl->buffer_table,
pb_validate_fence_cb,
&data);
/* FIXME: cso_hash shrinks here, which is not desirable in this use case,
* as it will be refilled right soon */
hash_table_clear(vl->buffer_table);
}
void
pb_validate_destroy(struct pb_validate *vl)
{
pb_validate_fence(vl, NULL);
hash_table_destroy(vl->buffer_table);
FREE(vl);
}
struct pb_validate *
pb_validate_create()
{
struct pb_validate *vl;
vl = CALLOC_STRUCT(pb_validate);
if(!vl)
return NULL;
vl->buffer_table = hash_table_create(buffer_table_hash,
buffer_table_compare);
if(!vl->buffer_table) {
FREE(vl);
return NULL;
}
return vl;
}
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