/// <summary>Modify the configuration of the window cache.</summary>
/// <remarks>
/// Modify the configuration of the window cache.
/// <p>
/// The new configuration is applied immediately. If the new limits are
/// smaller than what what is currently cached, older entries will be purged
/// as soon as possible to allow the cache to meet the new limit.
/// </remarks>
/// <param name="cfg">the new window cache configuration.</param>
/// <exception cref="System.ArgumentException">
/// the cache configuration contains one or more invalid
/// settings, usually too low of a limit.
/// </exception>
public static void Reconfigure(WindowCacheConfig cfg)
{
NGit.Storage.File.WindowCache nc = new NGit.Storage.File.WindowCache(cfg);
NGit.Storage.File.WindowCache oc = cache;
if (oc != null)
{
oc.RemoveAll();
}
cache = nc;
streamFileThreshold = cfg.GetStreamFileThreshold();
DeltaBaseCache.Reconfigure(cfg);
}
/// <exception cref="System.IO.IOException"></exception>
internal static ByteWindow Get(PackFile pack, long offset)
{
NGit.Storage.File.WindowCache c = cache;
ByteWindow r = c.GetOrLoad(pack, c.ToStart(offset));
if (c != cache)
{
// The cache was reconfigured while we were using the old one
// to load this window. The window is still valid, but our
// cache may think its still live. Ensure the window is removed
// from the old cache so resources can be released.
//
c.RemoveAll();
}
return(r);
}