private void RunVerifierThreadRoutine(object o)
{
RunVerifierThreadParams p = (RunVerifierThreadParams)o;
RunVerifier(p.program, p.snapshot, p.requestId, p.errorListHolder, p.diagnoseTimeouts);
}
/// <summary>
/// This method is invoked when the user has been idle for a little while.
/// Note, "sender" and "args" are allowed to be passed in as null--they are not used by this method.
/// </summary>
public void UponIdle(object sender, EventArgs args)
{
lock (this) {
if (verificationInProgress)
{
// This UponIdle message came at an inopportune time--we've already kicked off a verification.
// Just back off.
resolver.UpdateErrorList(resolver.Snapshot);
return;
}
if (resolver == null)
{
return;
}
Dafny.Program prog;
ITextSnapshot snap;
lock (resolver) {
prog = resolver.Program;
snap = resolver.Snapshot;
}
if (prog == null || VerificationDisabled)
{
return;
}
// We have a successfully resolved program to verify
var dt = isDiagnosingTimeouts;
if (!dt)
{
var resolvedVersion = snap.Version.VersionNumber;
if (bufferChangesPostVerificationStart.Count == 0)
{
// Nothing new to verify. No reason to start a new verification.
return;
}
else if (!bufferChangesPostVerificationStart.TrueForAll(span => span.Snapshot.Version.VersionNumber <= resolvedVersion))
{
// There have been buffer changes since the program that was resolved. Do nothing here,
// and instead just await the next resolved program.
return;
}
}
// at this time, we're committed to running the verifier
lastRequestId = null;
lock (RequestIdToSnapshot)
{
do
{
lastRequestId = DateTime.UtcNow.Ticks.ToString();
} while (RequestIdToSnapshot.ContainsKey(lastRequestId));
RequestIdToSnapshot[lastRequestId] = snap;
}
if (_document != null)
{
ProgressTaggers[_document.TextBuffer] = this;
}
RunVerifierThreadParams verifierThreadParams = new RunVerifierThreadParams(prog, snap, lastRequestId, resolver, dt);
Thread thread = new Thread(RunVerifierThreadRoutine, _verificationTaskStackSize);
thread.Start(verifierThreadParams);
verificationInProgress = true;
if (dt)
{
isDiagnosingTimeouts = false;
}
// Change orange progress markers into yellow ones
Contract.Assert(bufferChangesPreVerificationStart.Count == 0); // follows from monitor invariant
var empty = bufferChangesPreVerificationStart;
bufferChangesPreVerificationStart = bufferChangesPostVerificationStart;
bufferChangesPostVerificationStart = empty;
// Notify to-whom-it-may-concern about the changes we just made
NotifyAboutChangedTags(snap);
}
}
