[PATCH] Cache localised number chars

[Robert Shearman]

Michael Karcher wrote:
> UDATE *lpUdate)
>  static void VARIANT_GetLocalisedNumberChars(VARIANT_NUMBER_CHARS *lpChars, LCID lcid, DWORD dwFlags)
>  {
>    static const VARIANT_NUMBER_CHARS defaultChars = { '-','+','.',',','$',0,'.',',' };
> +  static VARIANT_NUMBER_CHARS lastChars;
> +  static LCID lastLcid = -1;
> +  static DWORD lastFlags = 0;
>    LCTYPE lctype = dwFlags & LOCALE_NOUSEROVERRIDE;
>    WCHAR buff[4];
>  
> +  /* Asking for default locale entries is very expensive: It is a registry
> +     server call. So cache one localy, as Microsoft does it too */
> +  if(lcid == lastLcid && dwFlags == lastFlags)
> +  {
> +    memcpy(lpChars, &lastChars, sizeof(defaultChars));
> +    return;
> +  }
> +
>   

This introduces a race condition.

-- 
Rob Shearman