/** Creates a <tt>BloatContext</tt> that loads classes from a given CLASSPATH. */
static BloatContext makeContext(final String classpath, final String outputDirName) {
final ClassFileLoader loader = new ClassFileLoader();
if (classpath != null) {
loader.prependClassPath(classpath);
}
// if(TRACE) {
// loader.setVerbose(true);
// }
BloatBenchmark.tr(" Creating a BloatContext for CLASSPATH: " + loader.getClassPath());
if (outputDirName != null) {
loader.setOutputDir(new File(outputDirName));
}
final BloatContext context = new CachingBloatContext(loader, BloatBenchmark.CLASSES, true);
// Always ignore the sun packages and the opj stuff for
// interprocedural stuff
if (!BloatBenchmark.SUN) {
context.addIgnorePackage("sun");
}
context.addIgnorePackage("java.lang.ref");
context.addIgnorePackage("org.opj.system");
if (BloatBenchmark.USE1_1) {
// Toba can't deal with java.lang.Character
context.addIgnoreClass(Type.getType("Ljava/lang/Character;"));
}
return (context);
}
/**
* Parses the command line. The user must specify at least one class to optimize and the directory
* in which to place the optimized class files. The methods of the specified classes are then
* optimized according to the command line options.
*
* @see ClassEditor
* @see ClassFileLoader
* @see ClassFile
* @see MethodEditor
* @see MethodInfo
* @see CompactArrayInitializer
* @see FlowGraph
*/
public static void main(final String[] args) {
try {
Main.loader = new ClassFileLoader();
List classes = new ArrayList(args.length); // The classes to
// optimize
boolean gotdir = false; // Has an output directory been specified?
Main.ARGS = args;
for (int i = 0; i < args.length; i++) {
if (args[i].equals("-v") || args[i].equals("-verbose")) {
Main.VERBOSE = true;
Main.loader.setVerbose(true);
} else if (args[i].equals("-debug")) {
Main.DEBUG = true;
Main.loader.setVerbose(true);
ClassFileLoader.DEBUG = true;
CompactArrayInitializer.DEBUG = true;
ClassEditor.DEBUG = true;
FlowGraph.DEBUG = true;
DominatorTree.DEBUG = true;
Tree.DEBUG = true;
CodeGenerator.DEBUG = true;
Liveness.DEBUG = true;
SSA.DEBUG = true;
SSAGraph.DEBUG = true;
PersistentCheckElimination.DEBUG = true;
ValueNumbering.DEBUG = true;
ValueFolding.DEBUG = true;
ClassHierarchy.DEBUG = true;
TypeInference.DEBUG = true;
SSAPRE.DEBUG = true;
StackPRE.DEBUG = true;
ExprPropagation.DEBUG = true;
DeadCodeElimination.DEBUG = true;
CodeGenerator.DB_OPT_STACK = true;
} else if (args[i].equals("-trace")) {
Main.TRACE = true;
} else if (args[i].equals("-db")) {
if (++i >= args.length) {
System.err.println("** No debugging option specified");
Main.usage();
}
if (args[i].equals("bc")) {
CodeArray.DEBUG = true;
} else if (args[i].equals("cfg")) {
FlowGraph.DEBUG = true;
} else if (args[i].equals("ssa")) {
SSA.DEBUG = true;
SSAGraph.DEBUG = true;
} else if (args[i].equals("graphs")) {
FlowGraph.DB_GRAPHS = true;
} else if (args[i].startsWith("-")) {
i--;
} else {
System.err.println("** Unknown debugging option: " + args[i]);
Main.usage();
}
} else if (args[i].equals("-debugvf")) {
ValueFolding.DUMP = true;
} else if (args[i].equals("-debugbc")) {
BloatContext.DEBUG = true;
} else if (args[i].equals("-help")) {
Main.usage();
} else if (args[i].equals("-noanno")) {
Main.ANNO = false;
} else if (args[i].equals("-anno")) {
Main.ANNO = true;
} else if (args[i].equals("-print-flow-graph")) {
FlowGraph.PRINT_GRAPH = true;
} else if (args[i].equals("-preserve-debug")) {
MethodEditor.PRESERVE_DEBUG = true;
} else if (args[i].equals("-nouse-stack-vars")) {
Tree.USE_STACK = false;
} else if (args[i].equals("-use-stack-vars")) {
Tree.USE_STACK = true;
} else if (args[i].equals("-unique-handlers")) {
MethodEditor.UNIQUE_HANDLERS = true;
} else if (args[i].equals("-nocompact-array-init")) {
Main.COMPACT_ARRAY_INIT = false;
} else if (args[i].equals("-compact-array-init")) {
Main.COMPACT_ARRAY_INIT = true;
} else if (args[i].equals("-nostack-alloc")) {
Main.STACK_ALLOC = false;
} else if (args[i].equals("-stack-alloc")) {
Main.STACK_ALLOC = true;
} else if (args[i].equals("-no-verify")) {
Main.VERIFY = false;
} else if (args[i].equals("-peel-loops")) {
if (++i >= args.length) {
Main.usage();
}
final String n = args[i];
if (n.equals("all")) {
FlowGraph.PEEL_LOOPS_LEVEL = FlowGraph.PEEL_ALL_LOOPS;
} else {
try {
FlowGraph.PEEL_LOOPS_LEVEL = Integer.parseInt(n);
if (FlowGraph.PEEL_LOOPS_LEVEL < 0) {
Main.usage();
}
} catch (final NumberFormatException ex) {
Main.usage();
}
}
} else if (args[i].equals("-color")) {
Liveness.UNIQUE = false;
} else if (args[i].equals("-nocolor")) {
Liveness.UNIQUE = true;
} else if (args[i].equals("-only-method")) {
if (++i >= args.length) {
Main.usage();
}
Main.METHOD = args[i];
} else if (args[i].equals("-classpath")) {
if (++i >= args.length) {
Main.usage();
}
final String classpath = args[i];
Main.loader.setClassPath(classpath);
} else if (args[i].equals("-classpath/p")) {
if (++i >= args.length) {
Main.usage();
}
final String classpath = args[i];
Main.loader.prependClassPath(classpath);
} else if (args[i].equals("-skip")) {
if (++i >= args.length) {
Main.usage();
}
String pkg = args[i];
// Account for class file name on command line
if (pkg.endsWith(".class")) {
pkg = pkg.substring(0, pkg.lastIndexOf('.'));
}
Main.SKIP.add(pkg.replace('.', '/'));
} else if (args[i].equals("-only")) {
if (++i >= args.length) {
Main.usage();
}
String pkg = args[i];
// Account for class file name on command line
if (pkg.endsWith(".class")) {
pkg = pkg.substring(0, pkg.lastIndexOf('.'));
}
Main.ONLY.add(pkg.replace('.', '/'));
} else if (args[i].equals("-nodce")) {
Main.DCE = false;
} else if (args[i].equals("-noprop")) {
Main.PROP = false;
} else if (args[i].equals("-noappre")) {
SSAPRE.NO_ACCESS_PATHS = true;
} else if (args[i].equals("-nopre")) {
Main.PRE = false;
} else if (args[i].equals("-dce")) {
Main.DCE = true;
} else if (args[i].equals("-prop")) {
Main.PROP = true;
} else if (args[i].equals("-appre")) {
SSAPRE.NO_ACCESS_PATHS = false;
} else if (args[i].equals("-pre")) {
Main.PRE = true;
} else if (args[i].equals("-closure")) {
Main.CLOSURE = true;
} else if (args[i].equals("-opt-stack-1")) {
Main.OPT_STACK_1 = true;
CodeGenerator.OPT_STACK = true;
} else if (args[i].equals("-opt-stack-2")) {
Main.OPT_STACK_2 = true;
MethodEditor.OPT_STACK_2 = true;
} else if (args[i].equals("-diva")) {
Main.DIVA = true;
} else if (args[i].equals("-no-thread")) {
SSAPRE.NO_THREAD = true;
} else if (args[i].equals("-no-precise")) {
SSAPRE.NO_PRECISE = true;
} else if (args[i].equals("-relax-loading")) {
ClassHierarchy.RELAX = true;
} else if (args[i].equals("-f") || args[i].equals("-force")) {
Main.FORCE = true;
} else if (args[i].startsWith("-")) {
System.err.println("No such option: " + args[i]);
Main.usage();
} else if (i == args.length - 1) {
// Last argument is the name of the output directory
final File f = new File(args[i]);
if (f.exists() && !f.isDirectory()) {
System.err.println("No such directory: " + f.getPath());
System.exit(2);
}
if (!f.exists()) {
f.mkdirs();
}
if (!f.exists()) {
System.err.println("Couldn't create directory: " + f.getPath());
System.exit(2);
}
// Tell class loader to put optimized classes in f directory
Main.loader.setOutputDir(f);
gotdir = true;
} else {
// The argument must be a class name...
classes.add(args[i]);
}
}
if (!gotdir) {
System.err.println("No output directory specified");
Main.usage();
}
if (classes.size() == 0) {
System.err.println("** No classes specified");
Main.usage();
}
// Use the CachingBloatingContext
Main.context = new CachingBloatContext(Main.loader, classes, Main.CLOSURE);
boolean errors = false;
final Iterator iter = classes.iterator();
// Now that we've parsed the command line, load the classes into the
// class loader
while (iter.hasNext()) {
final String name = (String) iter.next();
try {
Main.context.loadClass(name);
} catch (final ClassNotFoundException ex) {
System.err.println("Couldn't find class: " + ex.getMessage());
errors = true;
}
}
if (errors) {
System.exit(1);
}
if (!Main.CLOSURE) {
final Iterator e = classes.iterator();
// Edit only the classes that were specified on the command line
while (e.hasNext()) {
final String name = (String) e.next();
Main.editClass(name);
}
} else {
// Edit all the classes in the class file editor and their
// superclasses
classes = null;
if (Main.TRACE) {
System.out.println("Computing closure " + Main.dateFormat.format(new Date()));
}
final Iterator e = Main.context.getHierarchy().classes().iterator();
while (e.hasNext()) {
final Type t = (Type) e.next();
if (t.isObject()) {
Main.editClass(t.className());
}
}
}
} catch (final ExceptionInInitializerError ex) {
ex.printStackTrace();
System.out.println(ex.getException());
}
}