/* This file is part of VoltDB.
* Copyright (C) 2008-2014 VoltDB Inc.
*
* This program 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.
*
* This program 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 VoltDB. If not, see <http://www.gnu.org/licenses/>.
*/
package org.voltdb;
import org.voltcore.logging.VoltLogger;
public class EELibraryLoader {
private static boolean voltSharedLibraryLoaded = false;
private static final VoltLogger hostLog = new VoltLogger("HOST");
static private boolean test64bit() {
// Sun JVMs are nice and chatty on this topic.
String sun_arch_data_model = System.getProperty("sun.arch.data.model", "none");
if (sun_arch_data_model.contains("64")) {
return true;
}
hostLog.info("Unable to positively confirm a 64-bit JVM. VoltDB requires" +
" a 64-bit JVM. A 32-bit JVM will fail to load the native VoltDB" +
" library.");
return false;
}
/**
* Load the shared native library if not yet loaded. Returns true if the library was loaded
**/
public synchronized static boolean loadExecutionEngineLibrary(boolean mustSuccede) {
if (!voltSharedLibraryLoaded) {
if (VoltDB.getLoadLibVOLTDB()) {
test64bit();
try {
final VoltLogger hostLog = new VoltLogger("HOST");
String versionString = VoltDB.instance().getEELibraryVersionString();
// this fallback is for test code only
if (versionString == null) {
versionString = VoltDB.instance().getVersionString();
}
assert(versionString != null);
final String libname = "voltdb-" + versionString;
hostLog.info("Loading native VoltDB code ("+libname+"). A confirmation message will follow if the loading is successful.");
System.loadLibrary(libname);
voltSharedLibraryLoaded = true;
hostLog.info("Successfully loaded native VoltDB library " + libname + ".");
} catch (Throwable e) {
if (mustSuccede) {
String msg = "Library VOLTDB JNI shared library loading failed. Library path " +
System.getProperty("java.library.path") + "\n";
msg += "The library may have failed to load because it can't be found in your " +
"load library path, or because it is not compatible with the current " +
"platform.\n";
msg += "VoltDB provides builds on our website for 64-bit OSX systems >= 10.6, " +
"and 64-bit Linux systems with kernels >= 2.6.18.";
VoltDB.crashLocalVoltDB(msg, false, null);
} else {
hostLog.info("Library VOLTDB JNI shared library loading failed. Library path "
+ System.getProperty("java.library.path"));
}
return false;
}
} else {
return false;
}
}
return voltSharedLibraryLoaded;
}
}