/**
* process the sample by checking it against each existing invariant and issuing an error if any
* invariant is falsified or weakened.
*/
public void process_sample(PptMap all_ppts, PptTopLevel ppt, ValueTuple vt, Integer nonce) {
this.all_ppts = all_ppts;
debug.fine("processing sample from: " + ppt.name);
// Add orig and derived variables
FileIO.add_orig_variables(ppt, vt.vals, vt.mods, nonce);
FileIO.add_derived_variables(ppt, vt.vals, vt.mods);
// Intern the sample
vt = new ValueTuple(vt.vals, vt.mods);
// If this is an enter point, just remember it for later
if (ppt.ppt_name.isEnterPoint()) {
Assert.assertTrue(nonce != null);
if (dir_file != null) {
// Yoav: I had to do a hack to handle the case that several dtrace files are concatenated
// together,
// and Sung's dtrace files have unterminated calls, and when concatenating two files you
// can have the same nonce.
// So I have to remove the nonce found from the call_map
call_map.remove(nonce);
} else Assert.assertTrue(call_map.get(nonce) == null);
call_map.put(nonce, new EnterCall(ppt, vt));
debug.fine("Skipping enter sample");
return;
}
// If this is an exit point, process the saved enter point
if (ppt.ppt_name.isExitPoint()) {
Assert.assertTrue(nonce != null);
EnterCall ec = call_map.get(nonce);
if (ec != null) {
call_map.remove(nonce);
debug.fine("Processing enter sample from " + ec.ppt.name);
add(ec.ppt, ec.vt);
} else { // didn't find the enter
if (!quiet)
System.out.printf("couldn't find enter for nonce %d at ppt %s\n", nonce, ppt.name());
return;
}
}
add(ppt, vt);
}
private void add(PptTopLevel ppt, ValueTuple vt) {
// Add the sample to any splitters
if (ppt.has_splitters()) {
for (PptSplitter ppt_split : ppt.splitters) {
PptConditional ppt_cond = ppt_split.choose_conditional(vt);
if (ppt_cond != null) add(ppt_cond, vt);
else debug.fine(": sample doesn't pick conditional");
}
}
// if this is a numbered exit, apply to the combined exit as well
if (!(ppt instanceof PptConditional) && ppt.ppt_name.isNumberedExitPoint()) {
PptTopLevel parent = all_ppts.get(ppt.ppt_name.makeExit());
if (parent != null) {
parent.get_missingOutOfBounds(ppt, vt);
add(parent, vt);
}
}
// If the point has no variables, skip it
if (ppt.var_infos.length == 0) return;
// We should have received sample here before, or there is nothing
// to check.
// Yoav added: It can be that the different dtrace and inv files have different program points
if (false && ppt.num_samples() <= 0)
Assert.assertTrue(
ppt.num_samples() > 0,
"ppt " + ppt.name + " has 0 samples and " + ppt.var_infos.length + " variables");
// Loop through each slice
slice_loop:
for (Iterator<PptSlice> i = ppt.views_iterator(); i.hasNext(); ) {
PptSlice slice = i.next();
if (debug_detail.isLoggable(Level.FINE))
debug_detail.fine(
": processing slice " + slice + "vars: " + Debug.toString(slice.var_infos, vt));
// If any variables are missing, skip this slice
for (int j = 0; j < slice.var_infos.length; j++) {
VarInfo v = slice.var_infos[j];
int mod = vt.getModified(v);
if (v.isMissing(vt)) {
if (debug_detail.isLoggable(Level.FINE))
debug_detail.fine(": : Skipping slice, " + v.name() + " missing");
continue slice_loop;
}
if (v.missingOutOfBounds()) {
if (debug_detail.isLoggable(Level.FINE))
debug.fine(": : Skipping slice, " + v.name() + " out of bounds");
continue slice_loop;
}
}
// Loop through each invariant
for (Invariant inv : slice.invs) {
if (debug_detail.isLoggable(Level.FINE))
debug_detail.fine(": : Processing invariant: " + inv);
if (!inv.isActive()) {
if (debug_detail.isLoggable(Level.FINE))
debug_detail.fine(": : skipped non-active " + inv);
continue;
}
// Yoav added
if (!activeInvariants.contains(inv)) {
// System.out.printf ("skipping invariant %s:%s\n", inv.ppt.name(),
// inv.format());
continue;
}
// String invRep = invariant2str(ppt, inv);
testedInvariants.add(inv);
InvariantStatus status = inv.add_sample(vt, 1);
sample_cnt++;
if (status != InvariantStatus.NO_CHANGE) {
LineNumberReader lnr = FileIO.data_trace_state.reader;
String line = (lnr == null) ? "?" : String.valueOf(lnr.getLineNumber());
if (!quiet) {
output_stream.println(
"At ppt "
+ ppt.name
+ ", Invariant '"
+ inv.format()
+ "' invalidated by sample "
+ Debug.toString(slice.var_infos, vt)
+ "at line "
+ line
+ " in file "
+ FileIO.data_trace_state.filename);
}
failedInvariants.add(inv);
activeInvariants.remove(inv);
error_cnt++;
}
}
}
}