/** construct a Transaction for use in an offline operation */
public static LifecycleTransaction offline(
OperationType operationType, Iterable<SSTableReader> readers) {
// if offline, for simplicity we just use a dummy tracker
Tracker dummy = new Tracker(null, false);
dummy.addInitialSSTables(readers);
dummy.apply(updateCompacting(emptySet(), readers));
return new LifecycleTransaction(dummy, operationType, readers);
}
private Throwable unmarkCompacting(Set<SSTableReader> unmark, Throwable accumulate) {
accumulate = tracker.apply(updateCompacting(unmark, emptySet()), accumulate);
// when the CFS is invalidated, it will call unreferenceSSTables(). However,
// unreferenceSSTables only deals
// with sstables that aren't currently being compacted. If there are ongoing compactions that
// finish or are
// interrupted after the CFS is invalidated, those sstables need to be unreferenced as well, so
// we do that here.
accumulate = tracker.dropSSTablesIfInvalid(accumulate);
return accumulate;
}
private Throwable checkpoint(Throwable accumulate) {
if (logger.isDebugEnabled())
logger.debug("Checkpointing update:{}, obsolete:{}", staged.update, staged.obsolete);
if (staged.isEmpty()) return accumulate;
Set<SSTableReader> toUpdate = toUpdate();
Set<SSTableReader> fresh = copyOf(fresh());
// check the current versions of the readers we're replacing haven't somehow been replaced by
// someone else
checkNotReplaced(filterIn(toUpdate, staged.update));
// ensure any new readers are in the compacting set, since we aren't done with them yet
// and don't want anyone else messing with them
// apply atomically along with updating the live set of readers
tracker.apply(
compose(updateCompacting(emptySet(), fresh), updateLiveSet(toUpdate, staged.update)));
// log the staged changes and our newly marked readers
marked.addAll(fresh);
logged.log(staged);
// setup our tracker, and mark our prior versions replaced, also releasing our references to
// them
// we do not replace/release obsoleted readers, since we may need to restore them on rollback
accumulate = setReplaced(filterOut(toUpdate, staged.obsolete), accumulate);
accumulate = release(selfRefs(filterOut(toUpdate, staged.obsolete)), accumulate);
staged.clear();
return accumulate;
}
/** point of no return: commit all changes, but leave all readers marked as compacting */
public Throwable doCommit(Throwable accumulate) {
assert staged.isEmpty() : "must be no actions introduced between prepareToCommit and a commit";
logger.debug("Committing update:{}, obsolete:{}", staged.update, staged.obsolete);
// this is now the point of no return; we cannot safely rollback, so we ignore exceptions until
// we're done
// we restore state by obsoleting our obsolete files, releasing our references to them, and
// updating our size
// and notification status for the obsolete and new files
accumulate = markObsolete(tracker, logged.obsolete, accumulate);
accumulate = tracker.updateSizeTracking(logged.obsolete, logged.update, accumulate);
accumulate = release(selfRefs(logged.obsolete), accumulate);
accumulate = tracker.notifySSTablesChanged(originals, logged.update, operationType, accumulate);
return accumulate;
}
/** undo all of the changes made by this transaction, resetting the state to its original form */
public Throwable doAbort(Throwable accumulate) {
if (logger.isDebugEnabled())
logger.debug(
"Aborting transaction over {}, with ({},{}) logged and ({},{}) staged",
originals,
logged.update,
logged.obsolete,
staged.update,
staged.obsolete);
if (logged.isEmpty() && staged.isEmpty()) return accumulate;
// mark obsolete all readers that are not versions of those present in the original set
Iterable<SSTableReader> obsolete =
filterOut(concatUniq(staged.update, logged.update), originals);
logger.debug("Obsoleting {}", obsolete);
// we don't pass the tracker in for the obsoletion, since these readers have never been notified
// externally
// nor had their size accounting affected
accumulate = markObsolete(null, obsolete, accumulate);
// replace all updated readers with a version restored to its original state
accumulate = tracker.apply(updateLiveSet(logged.update, restoreUpdatedOriginals()), accumulate);
// setReplaced immediately preceding versions that have not been obsoleted
accumulate = setReplaced(logged.update, accumulate);
// we have replaced all of logged.update and never made visible staged.update,
// and the files we have logged as obsolete we clone fresh versions of, so they are no longer
// needed either
// any _staged_ obsoletes should either be in staged.update already, and dealt with there,
// or is still in its original form (so left as is); in either case no extra action is needed
accumulate =
release(selfRefs(concat(staged.update, logged.update, logged.obsolete)), accumulate);
logged.clear();
staged.clear();
return accumulate;
}
public boolean isOffline() {
return tracker.isDummy();
}
/** Refreshes step positions. */
protected void refreshSteps() {
locked = true;
if (refreshStepsLater) return;
// return if this is an empty dynamic system
if (this instanceof DynamicSystem) {
DynamicSystem system = (DynamicSystem) this;
if (system.particles.length == 0) return;
}
if (trackerPanel != null) {
refreshDerivsLater = trackerPanel.getPlayer().getClipControl().isPlaying();
int n = trackerPanel.getFrameNumber();
VideoClip clip = trackerPanel.getPlayer().getVideoClip();
// determine last frame to be marked (must satisfy both model and clip)
int end = Math.min(getEndFrame(), n);
while (end > getStartFrame() && !clip.includesFrame(end)) {
end--;
}
if (end <= lastValidFrame) return;
if (lastValidFrame == -1) {
reset(); // initializes model, sets lastValidFrame to marked frame, if any
if (lastValidFrame == -1 || end <= lastValidFrame) return;
}
int start = lastValidFrame;
Tracker.logTime(
this.getClass().getSimpleName()
+ this.hashCode()
+ " refreshing steps "
+ start
+ " to "
+ end); //$NON-NLS-1$ //$NON-NLS-2$
boolean singleStep = (end - start == 1);
// step forward to end
ImageCoordSystem coords = trackerPanel.getCoords();
// get underlying coords if appropriate
boolean useDefault = isUseDefaultReferenceFrame();
while (useDefault && coords instanceof ReferenceFrame) {
coords = ((ReferenceFrame) coords).getCoords();
}
double startTime = t0 + dt * tracePtsPerStep * (start - getStartFrame()) / clip.getStepSize();
double stepSize = 1.0 * clip.getStepSize() / tracePtsPerStep;
int stepCount = (tracePtsPerStep * (end - start)) / clip.getStepSize();
ParticleModel[] models = getModels();
// prepare larger trace arrays and copy existing points into them
for (ParticleModel next : models) {
next.locked = false;
int traceLength = next.traceX.length + stepCount;
next.prevX = next.traceX;
next.prevY = next.traceY;
next.traceX = new double[traceLength];
next.traceY = new double[traceLength];
System.arraycopy(next.prevX, 0, next.traceX, 0, next.prevX.length);
System.arraycopy(next.prevY, 0, next.traceY, 0, next.prevY.length);
}
for (int i = 0; i < stepCount; i++) {
int stepNumber = i + 1;
int frameNumber = start + (int) (stepNumber * stepSize);
time = startTime + stepNumber * dt;
Point2D[] points = getNextTracePositions();
if (points == null) continue;
AffineTransform transform = coords.getToImageTransform(frameNumber);
for (int j = 0; j < models.length; j++) {
transform.transform(points[j], points[j]);
// determine if point is invalid due to out of bounds
boolean valid =
Math.abs(points[j].getX()) < xLimit && Math.abs(points[j].getY()) < yLimit;
if (!valid && !invalidWarningShown) {
invalidWarningShown = true;
Runnable runner = new Runnable() { // avoids deadlock?
public void run() {
// if (invalidWarningShown) return;
JOptionPane.showMessageDialog(
trackerPanel,
TrackerRes.getString("ParticleModel.Dialog.Offscreen.Message1")
+ XML.NEW_LINE //$NON-NLS-1$
+ TrackerRes.getString(
"ParticleModel.Dialog.Offscreen.Message2"), //$NON-NLS-1$
TrackerRes.getString("ParticleModel.Dialog.Offscreen.Title"), // $NON-NLS-1$
JOptionPane.WARNING_MESSAGE);
}
};
SwingUtilities.invokeLater(runner);
}
models[j].traceX[models[j].prevX.length + i] = valid ? points[j].getX() : Double.NaN;
models[j].traceY[models[j].prevY.length + i] = valid ? points[j].getY() : Double.NaN;
if (stepNumber % tracePtsPerStep == 0) { // refresh position step
saveState(frameNumber);
PositionStep step = (PositionStep) models[j].getStep(frameNumber);
if (step == null) {
step = createPositionStep(models[j], frameNumber, 0, 0);
step.setFootprint(models[j].getFootprint());
models[j].steps.setStep(frameNumber, step);
}
step.getPosition().setPosition(valid ? points[j] : nan); // this method is fast
}
}
}
int count = 4 + (end - start);
int startUpdate = start;
// step back twice to pick up possible valid derivatives
if (startUpdate > clip.getStepSize()) startUpdate -= clip.getStepSize();
if (startUpdate > clip.getStepSize()) startUpdate -= clip.getStepSize();
lastValidFrame = end;
for (ParticleModel next : models) {
next.steps.setLength(end + 1);
coords = trackerPanel.getCoords(); // get active coords
// special treatment if this is the origin of current reference frame
if (coords instanceof ReferenceFrame
&& ((ReferenceFrame) coords).getOriginTrack() == next) {
// set origins of reference frame
boolean prev = next.refreshing; // save refreshing value
next.refreshing = true;
((ReferenceFrame) coords).setOrigins();
// then set positions to zero wrt origins
for (int i = 0; i < clip.getStepCount(); i++) {
int frameNumber = clip.stepToFrame(i);
PositionStep step = (PositionStep) next.getStep(frameNumber);
if (step == null) continue;
AffineTransform transform = coords.getToImageTransform(frameNumber);
next.point.setLocation(0, 0);
transform.transform(next.point, next.point);
step.getPosition().setPosition(next.point); // this method is fast
}
next.refreshing = prev; // restore refreshing value
if (!refreshDerivsLater) {
next.updateDerivatives(startUpdate, count);
}
} else if (!refreshDerivsLater) {
next.updateDerivatives(startUpdate, count);
}
if (next.vAtOrigin) next.vTailsToOriginItem.doClick();
if (next.aAtOrigin) next.aTailsToOriginItem.doClick();
if (!refreshDerivsLater) {
if (singleStep)
next.support.firePropertyChange("step", null, new Integer(n)); // $NON-NLS-1$
else next.support.firePropertyChange("steps", null, null); // $NON-NLS-1$
}
// erase refreshed steps
for (int i = start + 1; i <= end; i++) {
Step step = next.getStep(i);
if (step != null) step.erase();
}
next.locked = true;
}
trackerPanel.repaint();
}
}
