| /************************************************************************** |
| * |
| * Copyright 2007 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 |
| * Implementation of malloc-based buffers to store data that can't be processed |
| * by the hardware. |
| * |
| * \author Jose Fonseca <jrfonseca@tungstengraphics.com> |
| */ |
| |
| |
| #include "util/u_debug.h" |
| #include "util/u_memory.h" |
| #include "pb_buffer.h" |
| #include "pb_bufmgr.h" |
| |
| |
| struct malloc_buffer |
| { |
| struct pb_buffer base; |
| void *data; |
| }; |
| |
| |
| extern const struct pb_vtbl malloc_buffer_vtbl; |
| |
| static INLINE struct malloc_buffer * |
| malloc_buffer(struct pb_buffer *buf) |
| { |
| assert(buf); |
| if (!buf) |
| return NULL; |
| assert(buf->vtbl == &malloc_buffer_vtbl); |
| return (struct malloc_buffer *)buf; |
| } |
| |
| |
| static void |
| malloc_buffer_destroy(struct pb_buffer *buf) |
| { |
| align_free(malloc_buffer(buf)->data); |
| FREE(buf); |
| } |
| |
| |
| static void * |
| malloc_buffer_map(struct pb_buffer *buf, |
| unsigned flags, |
| void *flush_ctx) |
| { |
| return malloc_buffer(buf)->data; |
| } |
| |
| |
| static void |
| malloc_buffer_unmap(struct pb_buffer *buf) |
| { |
| /* No-op */ |
| } |
| |
| |
| static enum pipe_error |
| malloc_buffer_validate(struct pb_buffer *buf, |
| struct pb_validate *vl, |
| unsigned flags) |
| { |
| assert(0); |
| return PIPE_ERROR; |
| } |
| |
| |
| static void |
| malloc_buffer_fence(struct pb_buffer *buf, |
| struct pipe_fence_handle *fence) |
| { |
| assert(0); |
| } |
| |
| |
| static void |
| malloc_buffer_get_base_buffer(struct pb_buffer *buf, |
| struct pb_buffer **base_buf, |
| pb_size *offset) |
| { |
| *base_buf = buf; |
| *offset = 0; |
| } |
| |
| |
| const struct pb_vtbl |
| malloc_buffer_vtbl = { |
| malloc_buffer_destroy, |
| malloc_buffer_map, |
| malloc_buffer_unmap, |
| malloc_buffer_validate, |
| malloc_buffer_fence, |
| malloc_buffer_get_base_buffer |
| }; |
| |
| |
| struct pb_buffer * |
| pb_malloc_buffer_create(pb_size size, |
| const struct pb_desc *desc) |
| { |
| struct malloc_buffer *buf; |
| |
| /* TODO: do a single allocation */ |
| |
| buf = CALLOC_STRUCT(malloc_buffer); |
| if(!buf) |
| return NULL; |
| |
| pipe_reference_init(&buf->base.reference, 1); |
| buf->base.usage = desc->usage; |
| buf->base.size = size; |
| buf->base.alignment = desc->alignment; |
| buf->base.vtbl = &malloc_buffer_vtbl; |
| |
| buf->data = align_malloc(size, desc->alignment < sizeof(void*) ? sizeof(void*) : desc->alignment); |
| if(!buf->data) { |
| FREE(buf); |
| return NULL; |
| } |
| |
| return &buf->base; |
| } |
| |
| |
| static struct pb_buffer * |
| pb_malloc_bufmgr_create_buffer(struct pb_manager *mgr, |
| pb_size size, |
| const struct pb_desc *desc) |
| { |
| return pb_malloc_buffer_create(size, desc); |
| } |
| |
| |
| static void |
| pb_malloc_bufmgr_flush(struct pb_manager *mgr) |
| { |
| /* No-op */ |
| } |
| |
| |
| static void |
| pb_malloc_bufmgr_destroy(struct pb_manager *mgr) |
| { |
| /* No-op */ |
| } |
| |
| |
| static boolean |
| pb_malloc_bufmgr_is_buffer_busy( struct pb_manager *mgr, |
| struct pb_buffer *buf ) |
| { |
| return FALSE; |
| } |
| |
| |
| static struct pb_manager |
| pb_malloc_bufmgr = { |
| pb_malloc_bufmgr_destroy, |
| pb_malloc_bufmgr_create_buffer, |
| pb_malloc_bufmgr_flush, |
| pb_malloc_bufmgr_is_buffer_busy |
| }; |
| |
| |
| struct pb_manager * |
| pb_malloc_bufmgr_create(void) |
| { |
| return &pb_malloc_bufmgr; |
| } |