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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 |
| * Batch buffer pool management. |
| * |
| * \author Jose Fonseca <jrfonseca-at-tungstengraphics-dot-com> |
| * \author Thomas Hellström <thomas-at-tungstengraphics-dot-com> |
| */ |
| |
| |
| #include "pipe/p_compiler.h" |
| #include "util/u_debug.h" |
| #include "os/os_thread.h" |
| #include "pipe/p_defines.h" |
| #include "util/u_memory.h" |
| #include "util/u_double_list.h" |
| |
| #include "pb_buffer.h" |
| #include "pb_bufmgr.h" |
| |
| |
| /** |
| * Convenience macro (type safe). |
| */ |
| #define SUPER(__derived) (&(__derived)->base) |
| |
| |
| struct pool_pb_manager |
| { |
| struct pb_manager base; |
| |
| pipe_mutex mutex; |
| |
| pb_size bufSize; |
| pb_size bufAlign; |
| |
| pb_size numFree; |
| pb_size numTot; |
| |
| struct list_head free; |
| |
| struct pb_buffer *buffer; |
| void *map; |
| |
| struct pool_buffer *bufs; |
| }; |
| |
| |
| static INLINE struct pool_pb_manager * |
| pool_pb_manager(struct pb_manager *mgr) |
| { |
| assert(mgr); |
| return (struct pool_pb_manager *)mgr; |
| } |
| |
| |
| struct pool_buffer |
| { |
| struct pb_buffer base; |
| |
| struct pool_pb_manager *mgr; |
| |
| struct list_head head; |
| |
| pb_size start; |
| }; |
| |
| |
| static INLINE struct pool_buffer * |
| pool_buffer(struct pb_buffer *buf) |
| { |
| assert(buf); |
| return (struct pool_buffer *)buf; |
| } |
| |
| |
| |
| static void |
| pool_buffer_destroy(struct pb_buffer *buf) |
| { |
| struct pool_buffer *pool_buf = pool_buffer(buf); |
| struct pool_pb_manager *pool = pool_buf->mgr; |
| |
| assert(!pipe_is_referenced(&pool_buf->base.reference)); |
| |
| pipe_mutex_lock(pool->mutex); |
| LIST_ADD(&pool_buf->head, &pool->free); |
| pool->numFree++; |
| pipe_mutex_unlock(pool->mutex); |
| } |
| |
| |
| static void * |
| pool_buffer_map(struct pb_buffer *buf, unsigned flags, void *flush_ctx) |
| { |
| struct pool_buffer *pool_buf = pool_buffer(buf); |
| struct pool_pb_manager *pool = pool_buf->mgr; |
| void *map; |
| |
| /* XXX: it will be necessary to remap here to propagate flush_ctx */ |
| |
| pipe_mutex_lock(pool->mutex); |
| map = (unsigned char *) pool->map + pool_buf->start; |
| pipe_mutex_unlock(pool->mutex); |
| return map; |
| } |
| |
| |
| static void |
| pool_buffer_unmap(struct pb_buffer *buf) |
| { |
| /* No-op */ |
| } |
| |
| |
| static enum pipe_error |
| pool_buffer_validate(struct pb_buffer *buf, |
| struct pb_validate *vl, |
| unsigned flags) |
| { |
| struct pool_buffer *pool_buf = pool_buffer(buf); |
| struct pool_pb_manager *pool = pool_buf->mgr; |
| return pb_validate(pool->buffer, vl, flags); |
| } |
| |
| |
| static void |
| pool_buffer_fence(struct pb_buffer *buf, |
| struct pipe_fence_handle *fence) |
| { |
| struct pool_buffer *pool_buf = pool_buffer(buf); |
| struct pool_pb_manager *pool = pool_buf->mgr; |
| pb_fence(pool->buffer, fence); |
| } |
| |
| |
| static void |
| pool_buffer_get_base_buffer(struct pb_buffer *buf, |
| struct pb_buffer **base_buf, |
| pb_size *offset) |
| { |
| struct pool_buffer *pool_buf = pool_buffer(buf); |
| struct pool_pb_manager *pool = pool_buf->mgr; |
| pb_get_base_buffer(pool->buffer, base_buf, offset); |
| *offset += pool_buf->start; |
| } |
| |
| |
| static const struct pb_vtbl |
| pool_buffer_vtbl = { |
| pool_buffer_destroy, |
| pool_buffer_map, |
| pool_buffer_unmap, |
| pool_buffer_validate, |
| pool_buffer_fence, |
| pool_buffer_get_base_buffer |
| }; |
| |
| |
| static struct pb_buffer * |
| pool_bufmgr_create_buffer(struct pb_manager *mgr, |
| pb_size size, |
| const struct pb_desc *desc) |
| { |
| struct pool_pb_manager *pool = pool_pb_manager(mgr); |
| struct pool_buffer *pool_buf; |
| struct list_head *item; |
| |
| assert(size == pool->bufSize); |
| assert(pool->bufAlign % desc->alignment == 0); |
| |
| pipe_mutex_lock(pool->mutex); |
| |
| if (pool->numFree == 0) { |
| pipe_mutex_unlock(pool->mutex); |
| debug_printf("warning: out of fixed size buffer objects\n"); |
| return NULL; |
| } |
| |
| item = pool->free.next; |
| |
| if (item == &pool->free) { |
| pipe_mutex_unlock(pool->mutex); |
| debug_printf("error: fixed size buffer pool corruption\n"); |
| return NULL; |
| } |
| |
| LIST_DEL(item); |
| --pool->numFree; |
| |
| pipe_mutex_unlock(pool->mutex); |
| |
| pool_buf = LIST_ENTRY(struct pool_buffer, item, head); |
| assert(!pipe_is_referenced(&pool_buf->base.reference)); |
| pipe_reference_init(&pool_buf->base.reference, 1); |
| pool_buf->base.alignment = desc->alignment; |
| pool_buf->base.usage = desc->usage; |
| |
| return SUPER(pool_buf); |
| } |
| |
| |
| static void |
| pool_bufmgr_flush(struct pb_manager *mgr) |
| { |
| /* No-op */ |
| } |
| |
| |
| static void |
| pool_bufmgr_destroy(struct pb_manager *mgr) |
| { |
| struct pool_pb_manager *pool = pool_pb_manager(mgr); |
| pipe_mutex_lock(pool->mutex); |
| |
| FREE(pool->bufs); |
| |
| pb_unmap(pool->buffer); |
| pb_reference(&pool->buffer, NULL); |
| |
| pipe_mutex_unlock(pool->mutex); |
| |
| FREE(mgr); |
| } |
| |
| |
| struct pb_manager * |
| pool_bufmgr_create(struct pb_manager *provider, |
| pb_size numBufs, |
| pb_size bufSize, |
| const struct pb_desc *desc) |
| { |
| struct pool_pb_manager *pool; |
| struct pool_buffer *pool_buf; |
| pb_size i; |
| |
| if(!provider) |
| return NULL; |
| |
| pool = CALLOC_STRUCT(pool_pb_manager); |
| if (!pool) |
| return NULL; |
| |
| pool->base.destroy = pool_bufmgr_destroy; |
| pool->base.create_buffer = pool_bufmgr_create_buffer; |
| pool->base.flush = pool_bufmgr_flush; |
| |
| LIST_INITHEAD(&pool->free); |
| |
| pool->numTot = numBufs; |
| pool->numFree = numBufs; |
| pool->bufSize = bufSize; |
| pool->bufAlign = desc->alignment; |
| |
| pipe_mutex_init(pool->mutex); |
| |
| pool->buffer = provider->create_buffer(provider, numBufs*bufSize, desc); |
| if (!pool->buffer) |
| goto failure; |
| |
| pool->map = pb_map(pool->buffer, |
| PB_USAGE_CPU_READ | |
| PB_USAGE_CPU_WRITE, NULL); |
| if(!pool->map) |
| goto failure; |
| |
| pool->bufs = (struct pool_buffer *)CALLOC(numBufs, sizeof(*pool->bufs)); |
| if (!pool->bufs) |
| goto failure; |
| |
| pool_buf = pool->bufs; |
| for (i = 0; i < numBufs; ++i) { |
| pipe_reference_init(&pool_buf->base.reference, 0); |
| pool_buf->base.alignment = 0; |
| pool_buf->base.usage = 0; |
| pool_buf->base.size = bufSize; |
| pool_buf->base.vtbl = &pool_buffer_vtbl; |
| pool_buf->mgr = pool; |
| pool_buf->start = i * bufSize; |
| LIST_ADDTAIL(&pool_buf->head, &pool->free); |
| pool_buf++; |
| } |
| |
| return SUPER(pool); |
| |
| failure: |
| FREE(pool->bufs); |
| if(pool->map) |
| pb_unmap(pool->buffer); |
| if(pool->buffer) |
| pb_reference(&pool->buffer, NULL); |
| FREE(pool); |
| return NULL; |
| } |