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[233372] - [view model] VM Cache gets corrupted causing it to get into spin-lock and freezing up the IDE.

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[233380] - [view model] VM cache can save the result of a canceled update.
This commit is contained in:
Pawel Piech 2008-05-22 05:01:51 +00:00
parent 77b141cf06
commit 9cfe89c6fc
1 changed files with 58 additions and 31 deletions
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89
plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/update/AbstractCachingVMProvider.java
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@ -21,6 +21,7 @@ import java.util.concurrent.Executor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.dd.dsf.concurrent.CountingRequestMonitor;
import org.eclipse.dd.dsf.concurrent.DataRequestMonitor;
import org.eclipse.dd.dsf.concurrent.DsfRunnable;
import org.eclipse.dd.dsf.concurrent.RequestMonitor;
import org.eclipse.dd.dsf.datamodel.IDMContext;
import org.eclipse.dd.dsf.datamodel.IDMData;
@ -193,6 +194,21 @@ public class AbstractCachingVMProvider extends AbstractVMProvider implements ICa
RootElementMarkerKey(Object rootElement) {
fRootElement = rootElement;
}
@Override
public String toString() {
return "Root marker for " + fRootElement;
}
@Override
public boolean equals(Object obj) {
return obj instanceof RootElementMarkerKey && ((RootElementMarkerKey)obj).fRootElement.equals(fRootElement);
}
@Override
public int hashCode() {
return fRootElement.hashCode();
}
}
class RootElementMarkerEntry extends Entry {
@ -364,7 +380,7 @@ public class AbstractCachingVMProvider extends AbstractVMProvider implements ICa
// This causes the update to return with an error.
// See https://bugs.eclipse.org/bugs/show_bug.cgi?id=202109
// Instead of checking isSuccess(), check getData() != null.
if(getData() != null) {
if(getData() != null && !isCanceled()) {
// Check if the udpate retrieved all children by specifying "offset = -1, length = -1"
int updateOffset = update.getOffset();
if (updateOffset < 0) {
@ -654,7 +670,10 @@ public class AbstractCachingVMProvider extends AbstractVMProvider implements ICa
entry.insert(fCacheListHead);
}
// Update they root element marker.
// Update they root element marker:
// - ensure that the root marker is root markers' map,
// - ensure that the root marker is in the cache map,
// - and ensure that it's at the end of the cache.
RootElementMarkerKey rootMarker = fRootMarkers.get(key.fRootElement);
if (rootMarker == null) {
rootMarker = new RootElementMarkerKey(key.fRootElement);
@ -664,7 +683,7 @@ public class AbstractCachingVMProvider extends AbstractVMProvider implements ICa
if (rootMarkerEntry == null) {
rootMarkerEntry = new RootElementMarkerEntry(rootMarker);
addEntry(rootMarker, rootMarkerEntry);
} else {
} else if (rootMarkerEntry.fNext != fCacheListHead) {
rootMarkerEntry.remove();
rootMarkerEntry.insert(fCacheListHead);
}
@ -691,36 +710,44 @@ public class AbstractCachingVMProvider extends AbstractVMProvider implements ICa
* {@link IElementPropertiesProvider}.
*/
@Deprecated
public void getModelData(IVMNode node, IViewerUpdate update, IDMService service, final IDMContext dmc,
final DataRequestMonitor rm, Executor executor)
public void getModelData(final IVMNode node, final IViewerUpdate update, final IDMService service, final IDMContext dmc,
final DataRequestMonitor rm, final Executor executor)
{
ElementDataKey key = makeEntryKey(node, update);
final ElementDataEntry entry = getElementDataEntry(key);
Object dataOrStatus = entry.fDataOrStatus.get(dmc);
if(dataOrStatus != null) {
if (dataOrStatus instanceof IDMData) {
rm.setData( (IDMData)dataOrStatus );
} else {
rm.setStatus((IStatus)dataOrStatus );
}
rm.done();
} else {
service.getModelData(dmc,
new ViewerDataRequestMonitor<IDMData>(executor, update) {
@Override
protected void handleCompleted() {
if (isSuccess()) {
entry.fDataOrStatus.put(dmc, getData());
rm.setData(getData());
} else {
entry.fDataOrStatus.put(dmc, getStatus());
rm.setStatus(getStatus());
}
rm.done();
getExecutor().execute(new DsfRunnable() {
public void run() {
ElementDataKey key = makeEntryKey(node, update);
final ElementDataEntry entry = getElementDataEntry(key);
Object dataOrStatus = entry.fDataOrStatus.get(dmc);
if(dataOrStatus != null) {
if (dataOrStatus instanceof IDMData) {
rm.setData( (IDMData)dataOrStatus );
} else {
rm.setStatus((IStatus)dataOrStatus );
}
}
);
}
rm.done();
} else {
service.getExecutor().execute(new DsfRunnable() {
public void run() {
service.getModelData(dmc,
new ViewerDataRequestMonitor<IDMData>(executor, update) {
@Override
protected void handleCompleted() {
if (isSuccess()) {
entry.fDataOrStatus.put(dmc, getData());
rm.setData(getData());
} else {
entry.fDataOrStatus.put(dmc, getStatus());
rm.setStatus(getStatus());
}
rm.done();
}
});
}
});
}
}
});
}
/**