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-rw-r--r--src/gallium/auxiliary/pipebuffer/pb_bufmgr_pool.c321
1 files changed, 321 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_pool.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_pool.c
new file mode 100644
index 00000000000..a6ff37653e9
--- /dev/null
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_pool.c
@@ -0,0 +1,321 @@
+/**************************************************************************
+ *
+ * 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 "pipe/p_debug.h"
+#include "pipe/p_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;
+
+ size_t bufSize;
+ size_t bufAlign;
+
+ size_t numFree;
+ size_t 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;
+
+ size_t 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(pool_buf->base.base.refcount == 0);
+
+ 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)
+{
+ struct pool_buffer *pool_buf = pool_buffer(buf);
+ struct pool_pb_manager *pool = pool_buf->mgr;
+ void *map;
+
+ 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,
+ unsigned *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,
+ size_t 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(pool_buf->base.base.refcount == 0);
+ pool_buf->base.base.refcount = 1;
+ pool_buf->base.base.alignment = desc->alignment;
+ pool_buf->base.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,
+ size_t numBufs,
+ size_t bufSize,
+ const struct pb_desc *desc)
+{
+ struct pool_pb_manager *pool;
+ struct pool_buffer *pool_buf;
+ size_t 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,
+ PIPE_BUFFER_USAGE_CPU_READ |
+ PIPE_BUFFER_USAGE_CPU_WRITE);
+ 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) {
+ pool_buf->base.base.refcount = 0;
+ pool_buf->base.base.alignment = 0;
+ pool_buf->base.base.usage = 0;
+ pool_buf->base.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:
+ if(pool->bufs)
+ FREE(pool->bufs);
+ if(pool->map)
+ pb_unmap(pool->buffer);
+ if(pool->buffer)
+ pb_reference(&pool->buffer, NULL);
+ if(pool)
+ FREE(pool);
+ return NULL;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-13 20:32:17 +0000