/**
* Returns the live methods of a program whose root methods are the <tt>main</tt> method of a set
* of classes.
*
* @param classes Names of classes containing root methods
* @param context Repository for accessing BLOAT stuff
* @return The <tt>MemberRef</tt>s of the live methods
*/
private static Collection liveMethods(final Collection classes, final BloatContext context) {
// Determine the roots of the call graph
final Set roots = new HashSet();
Iterator iter = classes.iterator();
while (iter.hasNext()) {
final String className = (String) iter.next();
try {
final ClassEditor ce = context.editClass(className);
final MethodInfo[] methods = ce.methods();
for (int i = 0; i < methods.length; i++) {
final MethodEditor me = context.editMethod(methods[i]);
if (!me.name().equals("main")) {
continue;
}
BloatBenchmark.tr(" Root " + ce.name() + "." + me.name() + me.type());
roots.add(me.memberRef());
}
} catch (final ClassNotFoundException ex1) {
BloatBenchmark.err.println("** Could not find class: " + ex1.getMessage());
System.exit(1);
}
}
if (roots.isEmpty()) {
BloatBenchmark.err.print("** No main method found in classes: ");
iter = classes.iterator();
while (iter.hasNext()) {
final String name = (String) iter.next();
BloatBenchmark.err.print(name);
if (iter.hasNext()) {
BloatBenchmark.err.print(", ");
}
}
BloatBenchmark.err.println("");
}
context.setRootMethods(roots);
final CallGraph cg = context.getCallGraph();
final Set liveMethods = new TreeSet(new MemberRefComparator());
liveMethods.addAll(cg.liveMethods());
return (liveMethods);
}
/**
* Parse the command line. Inserts residency, update, and swizzle checks into the bytecode of the
* methods of the specified classes.
*/
public static void main(final String[] args) {
final ClassFileLoader loader = new ClassFileLoader();
List classes = new ArrayList(); // Names of classes from command line
boolean gotdir = false; // Did user specify an output dir?
for (int i = 0; i < args.length; i++) {
if (args[i].equals("-v") || args[i].equals("-verbose")) {
Main.VERBOSE++;
} else if (args[i].equals("-help")) {
Main.usage();
} else if (args[i].equals("-classpath")) {
if (++i >= args.length) {
Main.usage();
}
final String classpath = args[i];
loader.setClassPath(classpath);
} else if (args[i].equals("-skip")) {
if (++i >= args.length) {
Main.usage();
}
final String pkg = args[i].replace('.', '/');
Main.SKIP.add(pkg);
} else if (args[i].equals("-only")) {
if (++i >= args.length) {
Main.usage();
}
final String pkg = args[i].replace('.', '/');
Main.ONLY.add(pkg);
} else if (args[i].equals("-closure")) {
Main.CLOSURE = true;
} else if (args[i].equals("-relax-loading")) {
ClassHierarchy.RELAX = true;
} else if (args[i].equals("-f")) {
Main.FORCE = true;
} else if (args[i].equals("-norc")) {
Main.RC = false;
} else if (args[i].equals("-rc")) {
Main.RC = true;
} else if (args[i].equals("-nouc")) {
Main.UC = false;
} else if (args[i].equals("-uc")) {
Main.UC = true;
} else if (args[i].equals("-nosc")) {
Main.SC = false;
} else if (args[i].equals("-sc")) {
Main.SC = true;
} else if (args[i].startsWith("-")) {
Main.usage();
} else if (i == args.length - 1) {
// Last argument is the name of the outpu directory
final File f = new File(args[i]);
if (f.exists() && !f.isDirectory()) {
System.err.println("No such directory: " + f.getPath());
System.exit(2);
}
loader.setOutputDir(f);
gotdir = true;
} else {
classes.add(args[i]);
}
}
if (!gotdir) {
Main.usage();
}
if (classes.size() == 0) {
Main.usage();
}
if (Main.VERBOSE > 3) {
ClassFileLoader.DEBUG = true;
ClassEditor.DEBUG = true;
}
boolean errors = false;
final Iterator iter = classes.iterator();
// Load each class specified on the command line
while (iter.hasNext()) {
final String name = (String) iter.next();
try {
loader.loadClass(name);
} catch (final ClassNotFoundException ex) {
System.err.println("Couldn't find class: " + ex.getMessage());
errors = true;
}
}
if (errors) {
System.exit(1);
}
final BloatContext context = new CachingBloatContext(loader, classes, Main.CLOSURE);
if (!Main.CLOSURE) {
final Iterator e = classes.iterator();
while (e.hasNext()) {
final String name = (String) e.next();
try {
final ClassInfo info = loader.loadClass(name);
Main.decorateClass(context, info);
} catch (final ClassNotFoundException ex) {
System.err.println("Couldn't find class: " + ex.getMessage());
System.exit(1);
}
}
} else {
classes = null;
final ClassHierarchy hier = context.getHierarchy();
final Iterator e = hier.classes().iterator();
while (e.hasNext()) {
final Type t = (Type) e.next();
if (t.isObject()) {
try {
final ClassInfo info = loader.loadClass(t.className());
Main.decorateClass(context, info);
} catch (final ClassNotFoundException ex) {
System.err.println("Couldn't find class: " + ex.getMessage());
System.exit(1);
}
}
}
}
}