+++ /dev/null
-/**************************************************************************
- *
- * Copyright 2006 VMware, 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 <jfonseca-at-vmware-dot-com>
- * \author Thomas Hellström <thellstrom-at-vmware-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/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;
-
- mtx_t 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));
-
- mtx_lock(&pool->mutex);
- LIST_ADD(&pool_buf->head, &pool->free);
- pool->numFree++;
- mtx_unlock(&pool->mutex);
-}
-
-
-static void *
-pool_buffer_map(struct pb_buffer *buf, enum pb_usage_flags 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 */
-
- mtx_lock(&pool->mutex);
- map = (unsigned char *) pool->map + pool_buf->start;
- mtx_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,
- enum pb_usage_flags 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);
-
- mtx_lock(&pool->mutex);
-
- if (pool->numFree == 0) {
- mtx_unlock(&pool->mutex);
- debug_printf("warning: out of fixed size buffer objects\n");
- return NULL;
- }
-
- item = pool->free.next;
-
- if (item == &pool->free) {
- mtx_unlock(&pool->mutex);
- debug_printf("error: fixed size buffer pool corruption\n");
- return NULL;
- }
-
- LIST_DEL(item);
- --pool->numFree;
-
- mtx_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);
- mtx_lock(&pool->mutex);
-
- FREE(pool->bufs);
-
- pb_unmap(pool->buffer);
- pb_reference(&pool->buffer, NULL);
-
- mtx_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;
-
- (void) mtx_init(&pool->mutex, mtx_plain);
-
- 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;
-}
projects / mesa.git / commitdiff