/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.command.dev;
import java.io.PrintWriter;
import org.jnode.shell.AbstractCommand;
import org.jnode.shell.syntax.Argument;
import org.jnode.shell.syntax.ClassNameArgument;
import org.jnode.shell.syntax.FlagArgument;
import org.jnode.shell.syntax.IntegerArgument;
import org.jnode.shell.syntax.StringArgument;
import org.jnode.vm.LoadCompileService;
import org.jnode.vm.classmgr.VmType;
/**
* @author Levente S\u00e1ntha
* @author clawley@jnode.org
*/
public class DisassembleCommand extends AbstractCommand {
private static final String help_class = "the class to disassemble";
private static final String help_method = "the method to disassemble";
private static final String help_level = "the optimization level";
private static final String help_test = "If set, the test compilers are used.";
private static final String help_super = "Disassemble a Java class or method";
private static final String err_no_class = "Class '%s' not found%n";
private static final String err_no_test = "No test compilers are currently registered";
private static final String err_test_opt = "The highest test optimization level is %d%n";
private static final String err_opt = "The highest optimzation level is %d%n";
private static final String fmt_out = "Disassembling %d methods took %dms%n";
private final int maxTestLevel = LoadCompileService.getHighestOptimizationLevel(true);
private final int maxNontestLevel = LoadCompileService.getHighestOptimizationLevel(false);
private final int maxLevel = Math.max(maxTestLevel, maxNontestLevel);
private final ClassNameArgument argClass;
private final StringArgument argMethod;
private final IntegerArgument argLevel;
private final FlagArgument argTest;
public DisassembleCommand() {
super(help_super);
argClass = new ClassNameArgument("className", Argument.MANDATORY, help_class);
argMethod = new StringArgument("methodName", Argument.OPTIONAL, help_method);
argLevel = new IntegerArgument("level", Argument.OPTIONAL, 0, maxLevel, help_level);
argTest = new FlagArgument("test", Argument.OPTIONAL, help_test);
registerArguments(argClass, argMethod, argLevel, argTest);
}
public static void main(String[] args) throws Exception {
new DisassembleCommand().execute(args);
}
@Override
public void execute() throws Exception {
final PrintWriter out = getOutput().getPrintWriter();
final PrintWriter err = getError().getPrintWriter();
final String className = argClass.getValue();
final String methodName = argMethod.isSet() ? argMethod.getValue() : null;
final int level = argLevel.isSet() ? argLevel.getValue() : 0;
final boolean test = argTest.isSet();
final ClassLoader cl = Thread.currentThread().getContextClassLoader();
Class<?> cls;
try {
cls = cl.loadClass(className);
} catch (ClassNotFoundException ex) {
err.format(err_no_class, className);
exit(1);
// not reached
return;
}
final VmType<?> type = VmType.fromClass((Class<?>) cls);
if (test) {
if (maxTestLevel == -1) {
err.println(err_no_test);
exit(1);
} else if (maxTestLevel < level) {
err.format(err_test_opt, maxTestLevel);
exit(1);
}
} else if (maxNontestLevel < level) {
err.format(err_opt, maxNontestLevel);
exit(1);
}
final long start = System.currentTimeMillis();
final int count = type.disassemble(methodName, level, test, out);
final long end = System.currentTimeMillis();
out.format(fmt_out, count, (end - start));
}
}