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Diffstat (limited to 'src/gallium/auxiliary/pipebuffer/pb_bufmgr_fenced.c')
-rw-r--r--src/gallium/auxiliary/pipebuffer/pb_bufmgr_fenced.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_fenced.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_fenced.c
new file mode 100644
index 0000000000..97dd1427fd
--- /dev/null
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_fenced.c
@@ -0,0 +1,152 @@
+/**************************************************************************
+ *
+ * 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
+ * A buffer manager that wraps buffers in fenced buffers.
+ *
+ * \author Jose Fonseca <jrfonseca@tungstengraphics.dot.com>
+ */
+
+
+#include "util/u_debug.h"
+#include "util/u_memory.h"
+
+#include "pb_buffer.h"
+#include "pb_buffer_fenced.h"
+#include "pb_bufmgr.h"
+
+
+struct fenced_pb_manager
+{
+ struct pb_manager base;
+
+ struct pb_manager *provider;
+
+ struct fenced_buffer_list *fenced_list;
+};
+
+
+static INLINE struct fenced_pb_manager *
+fenced_pb_manager(struct pb_manager *mgr)
+{
+ assert(mgr);
+ return (struct fenced_pb_manager *)mgr;
+}
+
+
+static struct pb_buffer *
+fenced_bufmgr_create_buffer(struct pb_manager *mgr,
+ pb_size size,
+ const struct pb_desc *desc)
+{
+ struct fenced_pb_manager *fenced_mgr = fenced_pb_manager(mgr);
+ struct pb_buffer *buf;
+ struct pb_buffer *fenced_buf;
+
+ /* check for free buffers before allocating new ones */
+ fenced_buffer_list_check_free(fenced_mgr->fenced_list, 0);
+
+ buf = fenced_mgr->provider->create_buffer(fenced_mgr->provider, size, desc);
+ if(!buf) {
+ /* try harder to get a buffer */
+ fenced_buffer_list_check_free(fenced_mgr->fenced_list, 1);
+
+ buf = fenced_mgr->provider->create_buffer(fenced_mgr->provider, size, desc);
+ if(!buf) {
+#if 0
+ fenced_buffer_list_dump(fenced_mgr->fenced_list);
+#endif
+
+ /* give up */
+ return NULL;
+ }
+ }
+
+ fenced_buf = fenced_buffer_create(fenced_mgr->fenced_list, buf);
+ if(!fenced_buf) {
+ pb_reference(&buf, NULL);
+ }
+
+ return fenced_buf;
+}
+
+
+static void
+fenced_bufmgr_flush(struct pb_manager *mgr)
+{
+ struct fenced_pb_manager *fenced_mgr = fenced_pb_manager(mgr);
+
+ fenced_buffer_list_check_free(fenced_mgr->fenced_list, TRUE);
+
+ assert(fenced_mgr->provider->flush);
+ if(fenced_mgr->provider->flush)
+ fenced_mgr->provider->flush(fenced_mgr->provider);
+}
+
+
+static void
+fenced_bufmgr_destroy(struct pb_manager *mgr)
+{
+ struct fenced_pb_manager *fenced_mgr = fenced_pb_manager(mgr);
+
+ fenced_buffer_list_destroy(fenced_mgr->fenced_list);
+
+ if(fenced_mgr->provider)
+ fenced_mgr->provider->destroy(fenced_mgr->provider);
+
+ FREE(fenced_mgr);
+}
+
+
+struct pb_manager *
+fenced_bufmgr_create(struct pb_manager *provider,
+ struct pb_fence_ops *ops)
+{
+ struct fenced_pb_manager *fenced_mgr;
+
+ if(!provider)
+ return NULL;
+
+ fenced_mgr = CALLOC_STRUCT(fenced_pb_manager);
+ if (!fenced_mgr)
+ return NULL;
+
+ fenced_mgr->base.destroy = fenced_bufmgr_destroy;
+ fenced_mgr->base.create_buffer = fenced_bufmgr_create_buffer;
+ fenced_mgr->base.flush = fenced_bufmgr_flush;
+
+ fenced_mgr->provider = provider;
+ fenced_mgr->fenced_list = fenced_buffer_list_create(ops);
+ if(!fenced_mgr->fenced_list) {
+ FREE(fenced_mgr);
+ return NULL;
+ }
+
+ return &fenced_mgr->base;
+}