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/*
* Copyright (C) 2001-2013 Michael Fuchs
*
* This file is part of herold.
*
* herold 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 3 of the License, or
* (at your option) any later version.
*
* herold 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 herold. If not, see <http://www.gnu.org/licenses/>.
*/
package org.dbdoclet.service;
import java.io.File;
import java.io.IOException;
import java.util.Properties;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
public class JvmServices {
public static Log logger = LogFactory.getLog(JvmServices.class);
public static void listSystemProperties() {
Properties props = System.getProperties();
props.list(System.out);
}
public static String getOperatingSystem() {
String os = System.getProperty("os.name");
return os;
}
public static String getLinuxDistribution()
throws IOException {
File file;
file = new File("/etc/lsb-release");
if (file.exists() == true) {
String value = FileServices.getValueOfKey(file, "DISTRIB_ID");
if (value != null && value.length() > 0) {
return value;
}
}
file = new File("/etc/redhat-release");
if (file.exists() == true) {
return "RedHat";
}
file = new File("/etc/SuSE-release");
if (file.exists() == true) {
return "SUSE";
}
return null;
}
public static boolean isUnix() {
String os = System.getProperty("os.name");
if (os.equalsIgnoreCase("Linux")) {
return true;
}
return false;
}
public static boolean isWindows() {
String os = System.getProperty("os.name");
if (os.startsWith("Windows")) {
return true;
}
return false;
}
public static boolean isJdk() {
File binDir;
File libDir;
File jreDir;
File srcFile;
String path;
String jreHome = System.getProperty("java.home");
File jreHomeDir = new File(jreHome);
File jdkHomeDir = jreHomeDir.getParentFile();
if (jdkHomeDir == null) {
return false;
}
path = FileServices.appendPath(jdkHomeDir, "bin");
logger.debug("binPath=" + path);
binDir = new File(path);
path = FileServices.appendPath(jdkHomeDir, "lib");
libDir = new File(path);
path = FileServices.appendPath(jdkHomeDir, "jre");
jreDir = new File(path);
path = FileServices.appendFileName(jdkHomeDir, "src.zip");
srcFile = new File(path);
if (binDir.exists() == false
|| libDir.exists() == false
|| jreDir.exists() == false
|| srcFile.exists() == false) {
return false;
}
return true;
}
public static File getTmpDirectory() {
return new File(System.getProperty("java.io.tmpdir", "/tmp"));
}
public static File getJavaHomeDirectory() {
return new File(System.getProperty("java.home"));
}
public static File getJdkHomeDirectory() {
File jreHomeDir = getJavaHomeDirectory();
return jreHomeDir.getParentFile();
}
public static File getHomeDirectory() {
return new File(System.getProperty("user.home", "/tmp"));
}
public static void checkMemory() {
Runtime runtime = Runtime.getRuntime();
long free = runtime.freeMemory();
if (free < (1048576 * 24)) {
logger.debug("Running out of memory: "
+ ((free / 1048576)) + "MB left.");
runtime.gc();
logger.debug("Running garbage collection: "
+ ((runtime.freeMemory() / 1048576)) + " MB available.");
}
}
}
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