trace: New pipe driver to trace incoming calls.

Only pipe_screen calls traced, and only linux supported, for now.

1 files changed, 100 insertions, 0 deletions

diff --git a/src/gallium/drivers/trace/tr_stream.c b/src/gallium/drivers/trace/tr_stream.c
new file mode 100644
index 00000000000..14cc257e154
--- /dev/null
+++ b/src/gallium/drivers/trace/tr_stream.c
@@ -0,0 +1,100 @@
+/**************************************************************************
+ *
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS 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.
+ *
+ **************************************************************************/
+
+#include "pipe/p_config.h"
+
+#if defined(PIPE_OS_LINUX)
+#include <stdio.h>
+#else
+#error Unsupported platform 
+#endif
+
+#include "pipe/p_util.h"
+
+#include "tr_stream.h"
+
+
+struct trace_stream 
+{
+#if defined(PIPE_OS_LINUX)
+   FILE *file;
+#endif
+};
+
+
+struct trace_stream *
+trace_stream_create(const char *name, const char *ext)
+{
+   struct trace_stream *stream;
+   static unsigned file_no = 0; 
+   char filename[1024];
+   
+   stream = CALLOC_STRUCT(trace_stream);
+   if(!stream)
+      goto error1;
+   
+   snprintf(filename, sizeof(filename), "%s.%u.%s", name, file_no, ext);
+   
+#if defined(PIPE_OS_LINUX)
+   stream->file = fopen(filename, "w");
+   if(!stream->file)
+      goto error2;
+#endif
+   
+   return stream;
+   
+error2:
+   FREE(stream);
+error1:
+   return NULL;
+}
+
+
+boolean
+trace_stream_write(struct trace_stream *stream, const void *data, size_t size)
+{
+   if(!stream)
+      return FALSE;
+   
+#if defined(PIPE_OS_LINUX)
+   return fwrite(data, size, 1, stream->file) == size ? TRUE : FALSE;
+#endif
+}
+
+
+void
+trace_stream_close(struct trace_stream *stream) 
+{
+   if(!stream)
+      return;
+   
+#if defined(PIPE_OS_LINUX)
+   fclose(stream->file);
+#endif
+
+   FREE(stream);
+}