1 files changed, 112 insertions, 0 deletions
diff --git a/src/mesa/main/marshal.h b/src/mesa/main/marshal.h
new file mode 100644
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+++ b/src/mesa/main/marshal.h
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+/*
+ * Copyright © 2012 Intel Corporation
+ *
+ * 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, sublicense,
+ * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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 marshal.h
+ *
+ * Declarations of functions related to marshalling GL calls from a client
+ * thread to a server thread.
+ */
+
+#ifndef MARSHAL_H
+#define MARSHAL_H
+
+#include "main/glthread.h"
+#include "main/context.h"
+
+struct marshal_cmd_base
+{
+   /**
+    * Type of command.  See enum marshal_dispatch_cmd_id.
+    */
+   uint16_t cmd_id;
+
+   /**
+    * Size of command, in multiples of 4 bytes, including cmd_base.
+    */
+   uint16_t cmd_size;
+};
+
+
+static inline void *
+_mesa_glthread_allocate_command(struct gl_context *ctx,
+                                uint16_t cmd_id,
+                                size_t size)
+{
+   struct glthread_state *glthread = ctx->GLThread;
+   struct marshal_cmd_base *cmd_base;
+
+   if (unlikely(glthread->batch->used + size > MARSHAL_MAX_CMD_SIZE))
+      _mesa_glthread_flush_batch(ctx);
+
+   cmd_base = (struct marshal_cmd_base *)
+      &glthread->batch->buffer[glthread->batch->used];
+   glthread->batch->used += size;
+   cmd_base->cmd_id = cmd_id;
+   cmd_base->cmd_size = size;
+   return cmd_base;
+}
+
+#define DEBUG_MARSHAL_PRINT_CALLS 0
+
+static inline void
+debug_print_sync(const char *func)
+{
+#if DEBUG_MARSHAL_PRINT_CALLS
+   printf("sync: %s\n", func);
+#endif
+}
+
+static inline void
+debug_print_marshal(const char *func)
+{
+#if DEBUG_MARSHAL_PRINT_CALLS
+   printf("marshal: %s\n", func);
+#endif
+}
+
+static inline void
+debug_print_unmarshal(const char *func)
+{
+#if DEBUG_MARSHAL_PRINT_CALLS
+   printf("unmarshal: %s\n", func);
+#endif
+}
+
+struct _glapi_table *
+_mesa_create_marshal_table(const struct gl_context *ctx);
+
+size_t
+_mesa_unmarshal_dispatch_cmd(struct gl_context *ctx, const void *cmd);
+
+static inline void
+_mesa_post_marshal_hook(struct gl_context *ctx)
+{
+   /* This can be enabled for debugging whether a failure is a synchronization
+    * problem between the main thread and the worker thread, or a failure in
+    * how we actually marshal.
+    */
+   if (false)
+      _mesa_glthread_finish(ctx);
+}
+
+#endif /* MARSHAL_H */