Initial commit.

code/qcommon/timing.h

@@ -0,0 +1,62 @@
+
+class timing_c
+{
+private:
+	__int64	start;
+	__int64	end;
+
+	int		reset;
+public:
+	timing_c(void)
+	{
+	}
+	void Start()
+	{
+		const __int64 *s = &start;
+
+		__asm
+		{
+			push eax
+			push ebx
+			push edx
+
+			rdtsc
+			mov ebx, s
+			mov	[ebx], eax
+			mov [ebx + 4], edx
+
+			pop edx
+			pop ebx
+			pop eax
+		}
+	}
+	int End()
+	{
+		const __int64 *e = &end;
+		__int64	time;
+
+		__asm
+		{
+			push eax
+			push ebx
+			push edx
+
+			rdtsc
+			mov ebx, e
+			mov	[ebx], eax
+			mov [ebx + 4], edx
+
+			pop edx
+			pop ebx
+			pop eax
+		}
+		time = end - start;
+		if (time < 0)
+		{
+			time = 0;
+		}
+		return((int)time);
+	}
+};
+
+// end