import org.simantics.db.AsyncReadGraph;
import org.simantics.db.exception.DatabaseException;
-import org.simantics.db.exception.RuntimeDatabaseException;
import org.simantics.db.impl.BlockingAsyncProcedure;
import org.simantics.db.impl.DebugPolicy;
import org.simantics.db.impl.graph.AsyncBarrierImpl;
+import org.simantics.db.impl.graph.BarrierTracing;
import org.simantics.db.impl.graph.ReadGraphImpl;
import org.simantics.db.impl.query.QueryProcessor.SessionTask;
import org.simantics.db.procedure.AsyncProcedure;
try {
- BlockingAsyncProcedure<T> proc = new BlockingAsyncProcedure<>(graph, new AsyncProcedure<T>() {
+ BlockingAsyncProcedure<T> proc = new BlockingAsyncProcedure<>(graph.asyncBarrier, graph, new AsyncProcedure<T>() {
@Override
public void execute(AsyncReadGraph graph, T result) {
AsyncProcedure<T> procedure = entry != null ? entry : procedure_;
ReadGraphImpl queryGraph = graph.withParent(entry);
+ queryGraph.asyncBarrier.inc();
- BlockingAsyncProcedure<T> proc = new BlockingAsyncProcedure<>(queryGraph, null, request);
+ BlockingAsyncProcedure<T> proc = new BlockingAsyncProcedure<>(queryGraph.asyncBarrier, graph, null, request);
class AsyncTask extends SessionTask {
+ int counter = 0;
T result;
DatabaseException exception;
}
@Override
- public void run(int thread) {
+ public void run0(int thread) {
if(needsToBlock) proc.waitBarrier();
if(proc.isDone()) {
+ ReadGraphImpl executeGraph = graph.withParent(graph.parent);
+ executeGraph.asyncBarrier.inc();
try {
result = (T)proc.get();
- if(procedure != null) procedure.execute(graph, result);
+ if(procedure != null) {
+ procedure.execute(executeGraph, result);
+ }
} catch (DatabaseException e) {
- if(procedure != null) procedure.exception(graph, e);
+ if(procedure != null) procedure.exception(executeGraph, e);
exception = e;
} catch (Throwable t) {
DatabaseException dbe = new DatabaseException(t);
- if(procedure != null) procedure.exception(graph, dbe);
+ if(procedure != null) procedure.exception(executeGraph, dbe);
exception = dbe;
} finally {
- if (entry != null)
- entry.performFromCache(queryGraph, procedure_);
+ if (entry != null) {
+ // This does not throw
+ entry.performFromCache(executeGraph, procedure_);
+ }
+ executeGraph.asyncBarrier.dec();
+ executeGraph.asyncBarrier.waitBarrier(procedure, executeGraph);
}
} else {
- graph.processor.schedule(this);
+ if(counter++ > 10000) {
+ if(BarrierTracing.BOOKKEEPING) {
+ AsyncBarrierImpl.printReverse(queryGraph.asyncBarrier, 2);
+ AsyncBarrierImpl caller = queryGraph.asyncBarrier.caller;
+ while(caller != null) {
+ System.err.println("called by " + AsyncBarrierImpl.report(caller));
+ caller = caller.caller;
+ }
+ for(AsyncBarrierImpl ab : BarrierTracing.debuggerMap.keySet()) {
+ AsyncBarrierImpl.printReverse(ab, 2);
+ }
+ }
+ throw new IllegalStateException("Eternal loop in queries.");
+ }
+ graph.processor.schedule(new AsyncTask(graph));
}
}
}
-
- request.perform(queryGraph, proc);
-
+
+ try {
+ request.perform(queryGraph, proc);
+ } finally {
+ queryGraph.asyncBarrier.dec();
+ }
+
AsyncTask task = new AsyncTask(graph);
if(needsToBlock) task.run(0);
graph.processor.schedule(task);
return null;
}
-
+
if(task.exception != null) throw task.exception;
else return task.result;