make this static, so it can be used before main()

stepmania/src/arch/ArchHooks/ArchHooks.h

@@ -38,8 +38,12 @@ public:
 	 *
 	 * Note that bAccurate may change the result significantly; it may use a different
 	 * timer, and may have a different concept of when the program "started".
+	 *
+	 * This is a static function, implemented in whichever ArchHooks source is used,
+	 * so it can be used at any time (such as in global constructors), before HOOKS
+	 * is initialized.
 	 */
-	virtual int64_t GetMicrosecondsSinceStart( bool bAccurate ) = 0;
+	static int64_t GetMicrosecondsSinceStart( bool bAccurate );
 };
 
 ArchHooks *MakeArchHooks();

stepmania/src/arch/ArchHooks/ArchHooks_Win32.cpp

@@ -185,18 +185,25 @@ void ArchHooks_Win32::SetTime( tm newtime )
 	SetLocalTime( &st ); 
 }
 
-int64_t ArchHooks_Win32::GetMicrosecondsSinceStart( bool bAccurate )
+static bool g_bTimerInitialized;
-{
+static DWORD g_iStartTime;
-	static bool bInitialized;
-	static DWORD iStartTime;
-	if( !bInitialized )
-	{
-		timeBeginPeriod( 1 );
-		bInitialized = true;
-		iStartTime = timeGetTime();
-	}
 
-	return (timeGetTime() - iStartTime) * 1000;
+static void InitTimer()
+{
+	if( g_bTimerInitialized )
+		return;
+	g_bTimerInitialized = true;
+
+	timeBeginPeriod( 1 );
+	g_iStartTime = timeGetTime();
+}
+
+int64_t ArchHooks::GetMicrosecondsSinceStart( bool bAccurate )
+{
+	if( !g_bTimerInitialized )
+		InitTimer();
+
+	return (timeGetTime() - g_iStartTime) * 1000;
 }
 
 /*

stepmania/src/arch/ArchHooks/ArchHooks_Win32.h

@@ -17,7 +17,6 @@ public:
 	void EnterTimeCriticalSection();
 	void ExitTimeCriticalSection();
 	void SetTime( tm newtime );
-	int64_t GetMicrosecondsSinceStart( bool bAccurate );
 
 private:
 	void CheckVideoDriver();