- /*
- * Copyright 1999-2004 The Apache Software Foundation.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- /*
- * $Id: StringBufferPool.java,v 1.6 2004/02/17 04:21:14 minchau Exp $
- */
- package com.sun.org.apache.xml.internal.utils;
-
- /**
- * This class pools string buffers, since they are reused so often.
- * String buffers are good candidates for pooling, because of
- * their supporting character arrays.
- * @xsl.usage internal
- */
- public class StringBufferPool
- {
-
- /** The global pool of string buffers. */
- private static ObjectPool m_stringBufPool =
- new ObjectPool(com.sun.org.apache.xml.internal.utils.FastStringBuffer.class);
-
- /**
- * Get the first free instance of a string buffer, or create one
- * if there are no free instances.
- *
- * @return A string buffer ready for use.
- */
- public synchronized static FastStringBuffer get()
- {
- return (FastStringBuffer) m_stringBufPool.getInstance();
- }
-
- /**
- * Return a string buffer back to the pool.
- *
- * @param sb Must be a non-null reference to a string buffer.
- */
- public synchronized static void free(FastStringBuffer sb)
- {
- // Since this isn't synchronized, setLength must be
- // done before the instance is freed.
- // Fix attributed to Peter Speck <speck@ruc.dk>.
- sb.setLength(0);
- m_stringBufPool.freeInstance(sb);
- }
- }