diff options
Diffstat (limited to 'src/mesa/pipe/pipebuffer/pb_bufmgr_mm.c')
-rw-r--r-- | src/mesa/pipe/pipebuffer/pb_bufmgr_mm.c | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/src/mesa/pipe/pipebuffer/pb_bufmgr_mm.c b/src/mesa/pipe/pipebuffer/pb_bufmgr_mm.c new file mode 100644 index 0000000000..8e6dcf1116 --- /dev/null +++ b/src/mesa/pipe/pipebuffer/pb_bufmgr_mm.c @@ -0,0 +1,265 @@ +/************************************************************************** + * + * Copyright 2006 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 manager using the old texture memory manager. + * + * \author José Fonseca <jrfonseca@tungstengraphics.com> + */ + + +#include <assert.h> +#include <stdlib.h> +#include <unistd.h> + +#include "main/imports.h" +#include "glapi/glthread.h" +#include "main/mm.h" +#include "linked_list.h" + +#include "p_defines.h" +#include "pb_buffer.h" +#include "pb_bufmgr.h" + + +/** + * Convenience macro (type safe). + */ +#define SUPER(__derived) (&(__derived)->base) + + +struct mm_buffer_manager +{ + struct buffer_manager base; + + _glthread_Mutex mutex; + + size_t size; + struct mem_block *heap; + + size_t align2; + + struct pipe_buffer *buffer; + void *map; +}; + + +static inline struct mm_buffer_manager * +mm_buffer_manager(struct buffer_manager *mgr) +{ + assert(mgr); + return (struct mm_buffer_manager *)mgr; +} + + +struct mm_buffer +{ + struct pipe_buffer base; + + struct mm_buffer_manager *mgr; + + struct mem_block *block; +}; + + +static inline struct mm_buffer * +mm_buffer(struct pipe_buffer *buf) +{ + assert(buf); + return (struct mm_buffer *)buf; +} + + +static void +mm_buffer_reference(struct pipe_buffer *buf) +{ + /* No-op */ +} + + +static void +mm_buffer_release(struct pipe_buffer *buf) +{ + struct mm_buffer *mm_buf = mm_buffer(buf); + struct mm_buffer_manager *mm = mm_buf->mgr; + + _glthread_LOCK_MUTEX(mm->mutex); + mmFreeMem(mm_buf->block); + free(buf); + _glthread_UNLOCK_MUTEX(mm->mutex); +} + + +static void * +mm_buffer_map(struct pipe_buffer *buf, + unsigned flags) +{ + struct mm_buffer *mm_buf = mm_buffer(buf); + struct mm_buffer_manager *mm = mm_buf->mgr; + + return (unsigned char *) mm->map + mm_buf->block->ofs; +} + + +static void +mm_buffer_unmap(struct pipe_buffer *buf) +{ + /* No-op */ +} + + +static void +mm_buffer_get_base_buffer(struct pipe_buffer *buf, + struct pipe_buffer **base_buf, + unsigned *offset) +{ + struct mm_buffer *mm_buf = mm_buffer(buf); + struct mm_buffer_manager *mm = mm_buf->mgr; + buffer_get_base_buffer(mm->buffer, base_buf, offset); + *offset += mm_buf->block->ofs; +} + + +static const struct pipe_buffer_vtbl +mm_buffer_vtbl = { + mm_buffer_reference, + mm_buffer_release, + mm_buffer_map, + mm_buffer_unmap, + mm_buffer_get_base_buffer +}; + + +static struct pipe_buffer * +mm_bufmgr_create_buffer(struct buffer_manager *mgr, + size_t size) +{ + struct mm_buffer_manager *mm = mm_buffer_manager(mgr); + struct mm_buffer *mm_buf; + + _glthread_LOCK_MUTEX(mm->mutex); + + mm_buf = (struct mm_buffer *)malloc(sizeof(*mm_buf)); + if (!mm_buf) { + _glthread_UNLOCK_MUTEX(mm->mutex); + return NULL; + } + + mm_buf->base.vtbl = &mm_buffer_vtbl; + + mm_buf->mgr = mm; + + mm_buf->block = mmAllocMem(mm->heap, size, mm->align2, 0); + if(!mm_buf->block) { + fprintf(stderr, "warning: heap full\n"); +#if 0 + mmDumpMemInfo(mm->heap); +#endif + + mm_buf->block = mmAllocMem(mm->heap, size, mm->align2, 0); + if(!mm_buf->block) { + assert(0); + free(mm_buf); + _glthread_UNLOCK_MUTEX(mm->mutex); + return NULL; + } + } + + /* Some sanity checks */ + assert(0 <= mm_buf->block->ofs && mm_buf->block->ofs < mm->size); + assert(size <= mm_buf->block->size && mm_buf->block->ofs + mm_buf->block->size <= mm->size); + + _glthread_UNLOCK_MUTEX(mm->mutex); + return SUPER(mm_buf); +} + + +static void +mm_bufmgr_destroy(struct buffer_manager *mgr) +{ + struct mm_buffer_manager *mm = mm_buffer_manager(mgr); + + _glthread_LOCK_MUTEX(mm->mutex); + + mmDestroy(mm->heap); + + buffer_unmap(mm->buffer); + buffer_release(mm->buffer); + + _glthread_UNLOCK_MUTEX(mm->mutex); + + free(mgr); +} + + +struct buffer_manager * +mm_bufmgr_create(struct buffer_manager *provider, + size_t size, size_t align2) +{ + struct mm_buffer_manager *mm; + + mm = (struct mm_buffer_manager *)calloc(1, sizeof(*mm)); + if (!mm) + return NULL; + + assert(provider); + assert(provider->create_buffer); + mm->base.create_buffer = mm_bufmgr_create_buffer; + mm->base.destroy = mm_bufmgr_destroy; + + mm->size = size; + mm->align2 = align2; /* 64-byte alignment */ + + _glthread_INIT_MUTEX(mm->mutex); + + mm->buffer = provider->create_buffer(provider, size); + if (!mm->buffer) + goto failure; + + mm->map = buffer_map(mm->buffer, + PIPE_BUFFER_FLAG_READ | PIPE_BUFFER_FLAG_WRITE ); + if(!mm->map) + goto failure; + + mm->heap = mmInit(0, size); + if (!mm->heap) + goto failure; + + return SUPER(mm); + +failure: +if(mm->heap) + mmDestroy(mm->heap); + if(mm->map) + buffer_unmap(mm->buffer); + if(mm->buffer) + buffer_release(mm->buffer); + if(mm) + free(mm); + return NULL; +} |