1 files changed, 85 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/java/net/loader/URLStreamHandlerCache.java b/gcc-4.4.3/libjava/classpath/gnu/java/net/loader/URLStreamHandlerCache.java
new file mode 100644
index 000000000..b7b8bf12b
--- /dev/null
+++ b/gcc-4.4.3/libjava/classpath/gnu/java/net/loader/URLStreamHandlerCache.java
@@ -0,0 +1,85 @@
+/* URLStreamHandlerCache.java -- a cache for URLStreamHandlers
+   Copyright (C) 2006 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.java.net.loader;
+
+import java.net.URLStreamHandler;
+import java.net.URLStreamHandlerFactory;
+import java.util.HashMap;
+
+/**
+ */
+public class URLStreamHandlerCache
+{
+  /**
+   * A cache to store mappings between handler factory and its
+   * private protocol handler cache (also a HashMap), so we can avoid
+   * creating handlers each time the same protocol comes.
+   */
+  private HashMap<URLStreamHandlerFactory, HashMap<String, URLStreamHandler>> factoryCache
+    = new HashMap<URLStreamHandlerFactory, HashMap<String, URLStreamHandler>>(5);
+
+  public URLStreamHandlerCache()
+  {
+  }
+
+  public synchronized void add(URLStreamHandlerFactory factory)
+  {
+    // Since we only support three protocols so far, 5 is enough
+    // for cache initial size.
+    if (factory != null && factoryCache.get(factory) == null)
+      factoryCache.put(factory, new HashMap<String, URLStreamHandler>(5));
+  }
+
+  public synchronized URLStreamHandler get(URLStreamHandlerFactory factory,
+                                           String protocol)
+  {
+    if (factory == null)
+      return null;
+    // Check if there're handler for the same protocol in cache.
+    HashMap<String, URLStreamHandler> cache = factoryCache.get(factory);
+    URLStreamHandler handler = cache.get(protocol);
+    if (handler == null)
+      {
+        // Add it to cache.
+        handler = factory.createURLStreamHandler(protocol);
+        cache.put(protocol, handler);
+      }
+    return handler;
+  }
+}