/*
* Licensed to the Apache Software Foundation ( ASF ) under one or more
* contributor license agreements . See the NOTICE file distributed with
* this work for additional information regarding copyright ownership .
* The ASF licenses this file to You 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 .
*/
package org.apache.tomcat.jni;
import org.junit.Test;
/*
* Helper class to investigate native memory leaks . Needs to be used with tools
* to monitor native memory usage .
*
* Note : Moving the Pool , SSLContext , SSL and BIO creation in / out of the loop
* can help identify where the memory is leaking .
*/
public class TesterSSL {
@Test
public void testCreateDestroy() throws Exception {
Library.initialize(null );
SSL.initialize(null );
long memoryPool = Pool.create(0 );
long sslCtx = SSLContext.make(memoryPool, SSL.SSL_PROTOCOL_ALL, SSL.SSL_MODE_SERVER);
for (int i = 0 ; i < 10000000 ; i++) {
doNative(sslCtx);
if (i % 1000 == 0 ) {
System.gc();
}
}
SSLContext.free(sslCtx);
Pool.destroy(memoryPool);
System.gc();
}
private void doNative(long sslCtx) throws Exception {
long ssl = SSL.newSSL(sslCtx, true );
long bio = SSL.makeNetworkBIO(ssl);
SSL.freeBIO(bio);
SSL.freeSSL(ssl);
}
}
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(vorverarbeitet am 2026-09-29)
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