stream.runtime.MemoryLogger Maven / Gradle / Ivy
/*
* streams library
*
* Copyright (C) 2011-2014 by Christian Bockermann, Hendrik Blom
*
* streams is a library, API and runtime environment for processing high
* volume data streams. It is composed of three submodules "stream-api",
* "stream-core" and "stream-runtime".
*
* The streams library (and its submodules) is free software: you can
* redistribute it and/or modify it under the terms of the
* GNU Affero General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* The stream.ai library (and its submodules) 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*/
package stream.runtime;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import stream.data.Statistics;
/**
* @author Christian Bockermann <[email protected]>
*
*/
public class MemoryLogger extends Thread {
static Logger log = LoggerFactory.getLogger(MemoryLogger.class);
public MemoryLogger() {
}
public void run() {
while (true) {
Long mem0 = java.lang.Runtime.getRuntime().totalMemory()
- java.lang.Runtime.getRuntime().freeMemory();
log.info("Current memory usage is {} bytes", mem0);
try {
Statistics stats = new Statistics();
stats.put("memory.usage", mem0.doubleValue());
log.info("Memory usage: {}", stats);
} catch (Exception e) {
if (log.isTraceEnabled())
e.printStackTrace();
}
try {
Thread.sleep(5 * 1000L);
} catch (Exception e) {
}
}
}
}