Replaced fopen every trace call by a single fopen when tracing/dumping data

Change-Id: If752b2db0f3bd7125508b88f32248af6fa3c598d Reviewed-on: https://swiftshader-review.googlesource.com/2340Tested-by: Maxime Grégoire <mgregoire@google.com> Reviewed-by: Alexis Hétu <sugoi@google.com> Reviewed-by: Nicolas Capens <capn@google.com>

Replaced fopen every trace call by a single fopen when tracing/dumping data
e1a8986f · Maxime Gregoire · Maxime Grégoire · fceb1837 · e1a8986f
Commit e1a8986f authored Feb 18, 2015 by Maxime Gregoire Committed by Maxime Grégoire Mar 11, 2015
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debug.cpp src/OpenGL/common/debug.cpp +5 -2

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--- a/src/OpenGL/common/debug.cpp
+++ b/src/OpenGL/common/debug.cpp
@@ -22,12 +22,15 @@ namespace es
 	{
 		if(false)
 		{
-			FILE* file = fopen(TRACE_OUTPUT_FILE, "a");
+			static FILE* file = nullptr;
+			if(!file)
+			{
+				file = fopen(TRACE_OUTPUT_FILE, "w");
+			}

 			if(file)
 			{
 				vfprintf(file, format, vararg);
-				fclose(file);
 			}
 		}
 	}