/**
* This does the work of main, but it never calls System.exit, so it is appropriate to be called
* progrmmatically. Termination of the program with a message to the user is indicated by throwing
* Daikon.TerminationMessage.
*
* @see #main(String[])
* @see daikon.Daikon.TerminationMessage
*/
public static void mainHelper(final String[] args)
throws FileNotFoundException, IOException, ClassNotFoundException {
daikon.LogHelper.setupLogs(daikon.LogHelper.INFO);
LongOpt[] longopts =
new LongOpt[] {
new LongOpt(Daikon.suppress_redundant_SWITCH, LongOpt.NO_ARGUMENT, null, 0),
new LongOpt(Daikon.config_option_SWITCH, LongOpt.REQUIRED_ARGUMENT, null, 0),
new LongOpt(Daikon.debugAll_SWITCH, LongOpt.NO_ARGUMENT, null, 0),
new LongOpt(Daikon.debug_SWITCH, LongOpt.REQUIRED_ARGUMENT, null, 0),
};
Getopt g = new Getopt("daikon.ExtractConsequent", args, "h", longopts);
int c;
while ((c = g.getopt()) != -1) {
switch (c) {
case 0:
// got a long option
String option_name = longopts[g.getLongind()].getName();
if (Daikon.help_SWITCH.equals(option_name)) {
System.out.println(usage);
throw new Daikon.TerminationMessage();
} else if (Daikon.suppress_redundant_SWITCH.equals(option_name)) {
Daikon.suppress_redundant_invariants_with_simplify = true;
} else if (Daikon.config_option_SWITCH.equals(option_name)) {
String item = Daikon.getOptarg(g);
daikon.config.Configuration.getInstance().apply(item);
break;
} else if (Daikon.debugAll_SWITCH.equals(option_name)) {
Global.debugAll = true;
} else if (Daikon.debug_SWITCH.equals(option_name)) {
LogHelper.setLevel(Daikon.getOptarg(g), LogHelper.FINE);
} else {
throw new RuntimeException("Unknown long option received: " + option_name);
}
break;
case 'h':
System.out.println(usage);
throw new Daikon.TerminationMessage();
case '?':
break; // getopt() already printed an error
default:
System.out.println("getopt() returned " + c);
break;
}
}
// The index of the first non-option argument -- the name of the file
int fileIndex = g.getOptind();
if (args.length - fileIndex != 1) {
throw new Daikon.TerminationMessage("Wrong number of arguments." + Daikon.lineSep + usage);
}
String filename = args[fileIndex];
PptMap ppts =
FileIO.read_serialized_pptmap(
new File(filename), true // use saved config
);
extract_consequent(ppts);
}
private void add(PptTopLevel ppt, ValueTuple vt, int nonce) {
// if this is a numbered exit, apply to the combined exit as well
if (ppt.ppt_name.isNumberedExitPoint()) {
// Daikon.create_combined_exits(all_ppts);
PptTopLevel parent = all_ppts.get(ppt.ppt_name.makeExit());
if (parent != null) {
parent.get_missingOutOfBounds(ppt, vt);
add(parent, vt, nonce);
} else {
// make parent and apply
// this is a hack. it should probably filter out orig and derived
// vars instead of taking the first n.
int len = ppt.num_tracevars + ppt.num_static_constant_vars;
VarInfo[] exit_vars = new VarInfo[len];
for (int j = 0; j < len; j++) {
exit_vars[j] = new VarInfo(ppt.var_infos[j]);
exit_vars[j].varinfo_index = ppt.var_infos[j].varinfo_index;
exit_vars[j].value_index = ppt.var_infos[j].value_index;
exit_vars[j].equalitySet = null;
}
parent = new PptTopLevel(ppt.ppt_name.makeExit().getName(), exit_vars);
Daikon.init_ppt(parent, all_ppts);
all_ppts.add(parent);
parent.get_missingOutOfBounds(ppt, vt);
add(parent, vt, nonce);
}
}
// If the point has no variables, skip it
if (ppt.var_infos.length == 0) {
// The sample should be skipped but Daikon does not do this so
// DaikonSimple will not do this to be consistent.
// The better idea is for Daikon to assert that these valuetuples are
// empty and then skip the sample.
assert vt.size() == 0;
return;
}
// Instantiate slices and invariants if this is the first sample
if (ppt.num_samples() == 0) {
instantiate_views_and_invariants(ppt);
}
// manually inc the sample number because DaikonSimple does not
// use any of PptTopLevel's add methods which increase the sample
// number
ppt.incSampleNumber();
// Loop through each slice
for (Iterator<PptSlice> i = ppt.views_iterator(); i.hasNext(); ) {
PptSlice slice = i.next();
Iterator<Invariant> k = slice.invs.iterator();
boolean missing = false;
for (VarInfo v : slice.var_infos) {
// If any var has encountered out of array bounds values,
// stop all invariants in this slice. The presumption here is that
// an index out of bounds implies that the derived variable (eg a[i])
// doesn't really make any sense (essentially that i is not a valid
// index for a). Invariants on the derived variable are thus not
// relevant.
// If any variables are out of bounds, remove the invariants
if (v.missingOutOfBounds()) {
while (k.hasNext()) {
Invariant inv = k.next();
k.remove();
}
missing = true;
break;
}
// If any variables are missing, skip this slice
if (v.isMissing(vt)) {
missing = true;
break;
}
}
// keep a list of the falsified invariants
if (!missing) {
while (k.hasNext()) {
Invariant inv = k.next();
Invariant pre_inv = inv.clone();
for (VarInfo vi : inv.ppt.var_infos) {
assert vt.getValue(vi) != null : vi;
}
if (inv.ppt instanceof PptSlice2) assert inv.ppt.var_infos.length == 2;
InvariantStatus status = inv.add_sample(vt, 1);
if (status == InvariantStatus.FALSIFIED) {
k.remove();
}
}
}
// update num_samples and num_values of a slice manually
// because DaikonSimple does not call any of PptTopLevel's
// add methods
for (int j = 0; j < vt.vals.length; j++) {
if (!vt.isMissing(j)) {
ValueSet vs = ppt.value_sets[j];
vs.add(vt.vals[j]);
}
}
ppt.mbtracker.add(vt, 1);
}
}
/**
* This does the work of main, but it never calls System.exit, so it is appropriate to be called
* progrmmatically. Termination of the program with a message to the user is indicated by throwing
* Daikon.TerminationMessage.
*
* <p>Difference from Daikon's mainHelper: turn off optimization flags (equality, dynamic
* constants, NIS suppression).
*
* @see #main(String[])
* @see daikon.Daikon.TerminationMessage
* @see daikon.Daikon#mainHelper(String[])
*/
public static void mainHelper(final String[] args) throws IOException, FileNotFoundException {
// set up logging information
daikon.LogHelper.setupLogs(daikon.LogHelper.INFO);
// No optimizations used in the simple incremental algorithm so
// optimizations are turned off.
Daikon.use_equality_optimization = false;
Daikon.dkconfig_use_dynamic_constant_optimization = false;
Daikon.suppress_implied_controlled_invariants = false;
NIS.dkconfig_enabled = false;
// The flag tells FileIO and Daikon to use DaikonSimple
// specific methods (e.g. FileIO.read_declaration_file).
// When FileIO reads and processes
// samples, it must use the SimpleProcessor rather than the
// default Processor.
Daikon.using_DaikonSimple = true;
// Read command line options
Daikon.FileOptions files = Daikon.read_options(args, usage);
// DaikonSimple does not supply nor use the spinfo_files and map_files
Set<File> decls_files = files.decls;
Set<String> dtrace_files = files.dtrace;
if ((decls_files.size() == 0) && (dtrace_files.size() == 0)) {
throw new Daikon.TerminationMessage("No .decls or .dtrace files specified");
}
// Create the list of all invariant types
Daikon.setup_proto_invs();
// Create the program points for enter and numbered exits and
// initializes the points (adding orig and derived variables)
all_ppts = FileIO.read_declaration_files(decls_files);
// Create the combined exits (and add orig and derived vars)
// Daikon.create_combined_exits(all_ppts);
// Read and process the data trace files
SimpleProcessor processor = new SimpleProcessor();
FileIO.read_data_trace_files(dtrace_files, all_ppts, processor, true);
// System.exit(0);
// Print out the invariants for each program point (sort first)
for (Iterator<PptTopLevel> t = all_ppts.pptIterator(); t.hasNext(); ) {
PptTopLevel ppt = t.next();
// We do not need to print out program points that have not seen
// any samples.
if (ppt.num_samples() == 0) {
continue;
}
List<Invariant> invs = PrintInvariants.sort_invariant_list(ppt.invariants_vector());
List<Invariant> filtered_invs = Daikon.filter_invs(invs);
// The dkconfig_quiet printing is used for creating diffs between
// DaikonSimple
// and Daikon's output. The second kind of printing is used for
// debugging. Since the names of the program points are the same for both
// Daikon and DaikonSimple, diffing the two output will result in
// only differences in the invariants, but we can not see at which program
// points these differing invariants appear. Using the second kind of
// printing,
// Daikon's output does not have the '+' in the program point name, so in
// addition
// to the invariants showing up in the diff, we will also see the program
// point
// names.
if (Daikon.dkconfig_quiet) {
System.out.println("====================================================");
System.out.println(ppt.name());
} else {
System.out.println("===================================================+");
System.out.println(ppt.name() + " +");
}
// Sometimes the program points actually differ in number of
// samples seen due to differences in how Daikon and DaikonSimple
// see the variable hierarchy.
System.out.println(ppt.num_samples());
for (Invariant inv : filtered_invs) {
System.out.println(inv.getClass());
System.out.println(inv);
}
}
}