From 53ff970adb5fa5216f537df3de872e0e5884f9fe Mon Sep 17 00:00:00 2001
From: Christian Wulf <chw@informatik.uni-kiel.de>
Date: Sun, 31 Aug 2014 21:49:15 +0200
Subject: [PATCH] added InterThreadPipe; added RelayTestPipe;
---
.../framework/core/AbstractStage.java | 1 +
.../pipe/{Pipe.java => CommittablePipe.java} | 12 ++---
.../framework/core/pipe/InterThreadPipe.java | 24 ++++++++++
.../core/pipe/OrderedGrowableArrayPipe.java | 2 +-
.../framework/core/pipe/RelayTestPipe.java | 46 +++++++++++++++++++
.../core/pipe/SingleElementPipe.java | 6 ++-
.../framework/core/pipe/SpScPipe.java | 19 +-------
.../core/pipe/UnorderedGrowablePipe.java | 10 +---
.../methodcallWithPorts/stage/Relay.java | 6 +--
src/main/java/util/PerformanceTest.java | 2 +-
.../MethodCallThroughputAnalysis9.java | 12 ++---
.../experiment16/ChwHomePerformanceCheck.java | 2 +-
.../MethodCallThroughputAnalysis17.java | 36 ++++++---------
13 files changed, 111 insertions(+), 67 deletions(-)
rename src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/{Pipe.java => CommittablePipe.java} (91%)
create mode 100644 src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/InterThreadPipe.java
create mode 100644 src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/RelayTestPipe.java
diff --git a/src/main/java/teetime/variant/methodcallWithPorts/framework/core/AbstractStage.java b/src/main/java/teetime/variant/methodcallWithPorts/framework/core/AbstractStage.java
index 83c2a52f..84828cf0 100644
--- a/src/main/java/teetime/variant/methodcallWithPorts/framework/core/AbstractStage.java
+++ b/src/main/java/teetime/variant/methodcallWithPorts/framework/core/AbstractStage.java
@@ -53,6 +53,7 @@ public abstract class AbstractStage implements StageWithPort {
outputPort.reportNewElement();
return true;
+ // return outputPort.send(element);
}
@SuppressWarnings("unchecked")
diff --git a/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/Pipe.java b/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/CommittablePipe.java
similarity index 91%
rename from src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/Pipe.java
rename to src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/CommittablePipe.java
index 2dd45c93..5490feb1 100644
--- a/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/Pipe.java
+++ b/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/CommittablePipe.java
@@ -4,19 +4,19 @@ import teetime.util.list.CommittableResizableArrayQueue;
import teetime.variant.methodcallWithPorts.framework.core.InputPort;
import teetime.variant.methodcallWithPorts.framework.core.OutputPort;
-public class Pipe<T> extends IntraThreadPipe<T> {
+public final class CommittablePipe<T> extends IntraThreadPipe<T> {
private final CommittableResizableArrayQueue<T> elements = new CommittableResizableArrayQueue<T>(null, 4);
@Deprecated
public static <T> void connect(final OutputPort<T> sourcePort, final InputPort<T> targetPort) {
- IPipe<T> pipe = new Pipe<T>();
+ IPipe<T> pipe = new CommittablePipe<T>();
pipe.connectPorts(sourcePort, targetPort);
}
/*
* (non-Javadoc)
- *
+ *
* @see teetime.examples.throughput.methodcall.IPipe#add(T)
*/
@Override
@@ -28,7 +28,7 @@ public class Pipe<T> extends IntraThreadPipe<T> {
/*
* (non-Javadoc)
- *
+ *
* @see teetime.examples.throughput.methodcall.IPipe#removeLast()
*/
@Override
@@ -40,7 +40,7 @@ public class Pipe<T> extends IntraThreadPipe<T> {
/*
* (non-Javadoc)
- *
+ *
* @see teetime.examples.throughput.methodcall.IPipe#isEmpty()
*/
@Override
@@ -50,7 +50,7 @@ public class Pipe<T> extends IntraThreadPipe<T> {
/*
* (non-Javadoc)
- *
+ *
* @see teetime.examples.throughput.methodcall.IPipe#readLast()
*/
@Override
diff --git a/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/InterThreadPipe.java b/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/InterThreadPipe.java
new file mode 100644
index 00000000..abc3ff3b
--- /dev/null
+++ b/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/InterThreadPipe.java
@@ -0,0 +1,24 @@
+package teetime.variant.methodcallWithPorts.framework.core.pipe;
+
+import java.util.concurrent.atomic.AtomicReference;
+
+import teetime.variant.methodcallWithPorts.framework.core.signal.Signal;
+
+public abstract class InterThreadPipe<T> extends AbstractPipe<T> {
+
+ private final AtomicReference<Signal> signal = new AtomicReference<Signal>();
+
+ @Override
+ public void setSignal(final Signal signal) {
+ this.signal.lazySet(signal); // lazySet is legal due to our single-writer requirement
+ }
+
+ public Signal getSignal() {
+ return this.signal.get();
+ }
+
+ @Override
+ public void reportNewElement() {
+ // do nothing
+ }
+}
diff --git a/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/OrderedGrowableArrayPipe.java b/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/OrderedGrowableArrayPipe.java
index 7a6b4aa0..86f2b991 100644
--- a/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/OrderedGrowableArrayPipe.java
+++ b/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/OrderedGrowableArrayPipe.java
@@ -4,7 +4,7 @@ import teetime.util.concurrent.workstealing.CircularArray;
import teetime.variant.methodcallWithPorts.framework.core.InputPort;
import teetime.variant.methodcallWithPorts.framework.core.OutputPort;
-public class OrderedGrowableArrayPipe<T> extends IntraThreadPipe<T> {
+public final class OrderedGrowableArrayPipe<T> extends IntraThreadPipe<T> {
private CircularArray<T> elements;
private int head;
diff --git a/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/RelayTestPipe.java b/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/RelayTestPipe.java
new file mode 100644
index 00000000..d7ab5e83
--- /dev/null
+++ b/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/RelayTestPipe.java
@@ -0,0 +1,46 @@
+package teetime.variant.methodcallWithPorts.framework.core.pipe;
+
+import teetime.util.ConstructorClosure;
+
+public final class RelayTestPipe<T> extends InterThreadPipe<T> {
+
+ private int numInputObjects;
+ private final ConstructorClosure<T> inputObjectCreator;
+
+ public RelayTestPipe(final int numInputObjects,
+ final ConstructorClosure<T> inputObjectCreator) {
+ this.numInputObjects = numInputObjects;
+ this.inputObjectCreator = inputObjectCreator;
+ }
+
+ @Override
+ public boolean add(final T element) {
+ return false;
+ }
+
+ @Override
+ public T removeLast() {
+ if (this.numInputObjects == 0) {
+ return null;
+ } else {
+ this.numInputObjects--;
+ return this.inputObjectCreator.create();
+ }
+ }
+
+ @Override
+ public boolean isEmpty() {
+ return (this.numInputObjects == 0);
+ }
+
+ @Override
+ public int size() {
+ return this.numInputObjects;
+ }
+
+ @Override
+ public T readLast() {
+ return null;
+ }
+
+}
diff --git a/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/SingleElementPipe.java b/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/SingleElementPipe.java
index 96eeba86..1d48809f 100644
--- a/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/SingleElementPipe.java
+++ b/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/SingleElementPipe.java
@@ -3,10 +3,14 @@ package teetime.variant.methodcallWithPorts.framework.core.pipe;
import teetime.variant.methodcallWithPorts.framework.core.InputPort;
import teetime.variant.methodcallWithPorts.framework.core.OutputPort;
-public class SingleElementPipe<T> extends IntraThreadPipe<T> {
+public final class SingleElementPipe<T> extends IntraThreadPipe<T> {
private T element;
+ SingleElementPipe() {
+ super();
+ }
+
@Deprecated
public static <T> void connect(final OutputPort<T> sourcePort, final InputPort<T> targetPort) {
IPipe<T> pipe = new SingleElementPipe<T>();
diff --git a/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/SpScPipe.java b/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/SpScPipe.java
index 9153edaf..4999edef 100644
--- a/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/SpScPipe.java
+++ b/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/SpScPipe.java
@@ -1,7 +1,6 @@
package teetime.variant.methodcallWithPorts.framework.core.pipe;
import java.util.Queue;
-import java.util.concurrent.atomic.AtomicReference;
import org.jctools.queues.QueueFactory;
import org.jctools.queues.spec.ConcurrentQueueSpec;
@@ -10,12 +9,10 @@ import org.jctools.queues.spec.Preference;
import teetime.variant.methodcallWithPorts.framework.core.InputPort;
import teetime.variant.methodcallWithPorts.framework.core.OutputPort;
-import teetime.variant.methodcallWithPorts.framework.core.signal.Signal;
-public class SpScPipe<T> extends AbstractPipe<T> {
+public final class SpScPipe<T> extends InterThreadPipe<T> {
private final Queue<T> queue;
- private final AtomicReference<Signal> signal = new AtomicReference<Signal>();
// statistics
private int numWaits;
@@ -67,18 +64,4 @@ public class SpScPipe<T> extends AbstractPipe<T> {
return this.numWaits;
}
- @Override
- public void setSignal(final Signal signal) {
- this.signal.lazySet(signal); // lazySet is legal due to our single-writer requirement
- }
-
- public Signal getSignal() {
- return this.signal.get();
- }
-
- @Override
- public void reportNewElement() {
- // do nothing
- }
-
}
diff --git a/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/UnorderedGrowablePipe.java b/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/UnorderedGrowablePipe.java
index 3befc87d..357762b4 100644
--- a/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/UnorderedGrowablePipe.java
+++ b/src/main/java/teetime/variant/methodcallWithPorts/framework/core/pipe/UnorderedGrowablePipe.java
@@ -3,7 +3,7 @@ package teetime.variant.methodcallWithPorts.framework.core.pipe;
import teetime.variant.methodcallWithPorts.framework.core.InputPort;
import teetime.variant.methodcallWithPorts.framework.core.OutputPort;
-public class UnorderedGrowablePipe<T> extends IntraThreadPipe<T> {
+public final class UnorderedGrowablePipe<T> extends IntraThreadPipe<T> {
private final int MIN_CAPACITY;
@@ -12,7 +12,7 @@ public class UnorderedGrowablePipe<T> extends IntraThreadPipe<T> {
private int lastFreeIndex;
@SuppressWarnings("unchecked")
- public UnorderedGrowablePipe() {
+ UnorderedGrowablePipe() {
this.MIN_CAPACITY = 4;
this.elements = (T[]) new Object[this.MIN_CAPACITY];
}
@@ -23,12 +23,6 @@ public class UnorderedGrowablePipe<T> extends IntraThreadPipe<T> {
pipe.connectPorts(sourcePort, targetPort);
}
- @Override
- public void connectPorts(final OutputPort<T> sourcePort, final InputPort<T> targetPort) {
- sourcePort.setPipe(this);
- targetPort.setPipe(this);
- }
-
@Override
public boolean add(final T element) {
if (this.lastFreeIndex == this.elements.length) {
diff --git a/src/main/java/teetime/variant/methodcallWithPorts/stage/Relay.java b/src/main/java/teetime/variant/methodcallWithPorts/stage/Relay.java
index d31041fd..2c525299 100644
--- a/src/main/java/teetime/variant/methodcallWithPorts/stage/Relay.java
+++ b/src/main/java/teetime/variant/methodcallWithPorts/stage/Relay.java
@@ -2,14 +2,14 @@ package teetime.variant.methodcallWithPorts.stage;
import teetime.variant.methodcallWithPorts.framework.core.InputPort;
import teetime.variant.methodcallWithPorts.framework.core.ProducerStage;
-import teetime.variant.methodcallWithPorts.framework.core.pipe.SpScPipe;
+import teetime.variant.methodcallWithPorts.framework.core.pipe.InterThreadPipe;
import teetime.variant.methodcallWithPorts.framework.core.signal.TerminatingSignal;
public class Relay<T> extends ProducerStage<T> {
private final InputPort<T> inputPort = this.createInputPort();
- private SpScPipe<T> cachedCastedInputPipe;
+ private InterThreadPipe<T> cachedCastedInputPipe;
@Override
public void execute() {
@@ -26,7 +26,7 @@ public class Relay<T> extends ProducerStage<T> {
@Override
public void onStarting() {
- this.cachedCastedInputPipe = (SpScPipe<T>) this.inputPort.getPipe();
+ this.cachedCastedInputPipe = (InterThreadPipe<T>) this.inputPort.getPipe();
super.onStarting();
}
diff --git a/src/main/java/util/PerformanceTest.java b/src/main/java/util/PerformanceTest.java
index 0887ae91..7438d476 100644
--- a/src/main/java/util/PerformanceTest.java
+++ b/src/main/java/util/PerformanceTest.java
@@ -17,7 +17,7 @@ import teetime.variant.explicitScheduling.examples.throughput.TimestampObject;
public abstract class PerformanceTest {
- protected static final int NUM_OBJECTS_TO_CREATE = 100000;
+ protected static final int NUM_OBJECTS_TO_CREATE = 1000000;
protected static final int NUM_NOOP_FILTERS = 800;
public static final MeasurementRepository measurementRepository = new MeasurementRepository();
diff --git a/src/test/java/teetime/variant/methodcallWithPorts/examples/experiment09/MethodCallThroughputAnalysis9.java b/src/test/java/teetime/variant/methodcallWithPorts/examples/experiment09/MethodCallThroughputAnalysis9.java
index f55156f5..117954b8 100644
--- a/src/test/java/teetime/variant/methodcallWithPorts/examples/experiment09/MethodCallThroughputAnalysis9.java
+++ b/src/test/java/teetime/variant/methodcallWithPorts/examples/experiment09/MethodCallThroughputAnalysis9.java
@@ -23,7 +23,7 @@ import teetime.variant.explicitScheduling.framework.core.Analysis;
import teetime.variant.methodcallWithPorts.framework.core.HeadPipeline;
import teetime.variant.methodcallWithPorts.framework.core.HeadStage;
import teetime.variant.methodcallWithPorts.framework.core.RunnableStage;
-import teetime.variant.methodcallWithPorts.framework.core.pipe.Pipe;
+import teetime.variant.methodcallWithPorts.framework.core.pipe.CommittablePipe;
import teetime.variant.methodcallWithPorts.stage.CollectorSink;
import teetime.variant.methodcallWithPorts.stage.NoopFilter;
import teetime.variant.methodcallWithPorts.stage.ObjectProducer;
@@ -71,13 +71,13 @@ public class MethodCallThroughputAnalysis9 extends Analysis {
pipeline.setFirstStage(objectProducer);
pipeline.setLastStage(collectorSink);
- Pipe.connect(objectProducer.getOutputPort(), startTimestampFilter.getInputPort());
- Pipe.connect(startTimestampFilter.getOutputPort(), noopFilters[0].getInputPort());
+ CommittablePipe.connect(objectProducer.getOutputPort(), startTimestampFilter.getInputPort());
+ CommittablePipe.connect(startTimestampFilter.getOutputPort(), noopFilters[0].getInputPort());
for (int i = 0; i < noopFilters.length - 1; i++) {
- Pipe.connect(noopFilters[i].getOutputPort(), noopFilters[i + 1].getInputPort());
+ CommittablePipe.connect(noopFilters[i].getOutputPort(), noopFilters[i + 1].getInputPort());
}
- Pipe.connect(noopFilters[noopFilters.length - 1].getOutputPort(), stopTimestampFilter.getInputPort());
- Pipe.connect(stopTimestampFilter.getOutputPort(), collectorSink.getInputPort());
+ CommittablePipe.connect(noopFilters[noopFilters.length - 1].getOutputPort(), stopTimestampFilter.getInputPort());
+ CommittablePipe.connect(stopTimestampFilter.getOutputPort(), collectorSink.getInputPort());
return pipeline;
}
diff --git a/src/test/java/teetime/variant/methodcallWithPorts/examples/experiment16/ChwHomePerformanceCheck.java b/src/test/java/teetime/variant/methodcallWithPorts/examples/experiment16/ChwHomePerformanceCheck.java
index 8c73c415..8e3fe93b 100644
--- a/src/test/java/teetime/variant/methodcallWithPorts/examples/experiment16/ChwHomePerformanceCheck.java
+++ b/src/test/java/teetime/variant/methodcallWithPorts/examples/experiment16/ChwHomePerformanceCheck.java
@@ -28,6 +28,6 @@ public class ChwHomePerformanceCheck implements PerformanceCheckProfile {
System.out.println("speedupC: " + speedupC);
assertEquals(2, speedupB, 0.3);
- assertEquals(3.5, speedupC, 0.3);
+ assertEquals(3.6, speedupC, 0.3);
}
}
diff --git a/src/test/java/teetime/variant/methodcallWithPorts/examples/experiment17/MethodCallThroughputAnalysis17.java b/src/test/java/teetime/variant/methodcallWithPorts/examples/experiment17/MethodCallThroughputAnalysis17.java
index 1cf3daf7..7d662b6a 100644
--- a/src/test/java/teetime/variant/methodcallWithPorts/examples/experiment17/MethodCallThroughputAnalysis17.java
+++ b/src/test/java/teetime/variant/methodcallWithPorts/examples/experiment17/MethodCallThroughputAnalysis17.java
@@ -25,10 +25,10 @@ import teetime.variant.explicitScheduling.framework.core.Analysis;
import teetime.variant.methodcallWithPorts.framework.core.HeadPipeline;
import teetime.variant.methodcallWithPorts.framework.core.RunnableStage;
import teetime.variant.methodcallWithPorts.framework.core.StageWithPort;
+import teetime.variant.methodcallWithPorts.framework.core.pipe.DummyPipe;
import teetime.variant.methodcallWithPorts.framework.core.pipe.IPipe;
import teetime.variant.methodcallWithPorts.framework.core.pipe.PipeFactory;
-import teetime.variant.methodcallWithPorts.framework.core.pipe.PipeFactory.PipeOrdering;
-import teetime.variant.methodcallWithPorts.framework.core.pipe.PipeFactory.ThreadCommunication;
+import teetime.variant.methodcallWithPorts.framework.core.pipe.RelayTestPipe;
import teetime.variant.methodcallWithPorts.framework.core.pipe.UnorderedGrowablePipe;
import teetime.variant.methodcallWithPorts.framework.core.signal.TerminatingSignal;
import teetime.variant.methodcallWithPorts.stage.CollectorSink;
@@ -110,6 +110,7 @@ public class MethodCallThroughputAnalysis17 extends Analysis {
super.init();
}
+ @SuppressWarnings("unchecked")
private HeadPipeline<ObjectProducer<TimestampObject>, Distributor<TimestampObject>> buildProducerPipeline(final int numInputObjects,
final ConstructorClosure<TimestampObject> inputObjectCreator) {
final ObjectProducer<TimestampObject> objectProducer = new ObjectProducer<TimestampObject>(numInputObjects, inputObjectCreator);
@@ -117,21 +118,19 @@ public class MethodCallThroughputAnalysis17 extends Analysis {
Sink<TimestampObject> sink = new Sink<TimestampObject>();
Sink<Void> endStage = new Sink<Void>();
+ // UnorderedGrowablePipe.connect(objectProducer.getOutputPort(), sink.getInputPort());
+ // objectProducer.getOutputPort().pipe = new UnorderedGrowablePipe<TimestampObject>();
+
+ UnorderedGrowablePipe.connect(objectProducer.getOutputPort(), distributor.getInputPort());
+ distributor.getNewOutputPort().setPipe(new DummyPipe());
+
final HeadPipeline<ObjectProducer<TimestampObject>, Distributor<TimestampObject>> pipeline = new HeadPipeline<ObjectProducer<TimestampObject>, Distributor<TimestampObject>>();
pipeline.setFirstStage(objectProducer);
// pipeline.setFirstStage(sink);
// pipeline.setFirstStage(endStage);
-
pipeline.setLastStage(distributor);
// pipeline.setLastStage(sink);
// pipeline.setLastStage(new EndStage<TimestampObject>());
-
- // UnorderedGrowablePipe.connect(objectProducer.getOutputPort(), sink.getInputPort());
- // objectProducer.getOutputPort().pipe = new UnorderedGrowablePipe<TimestampObject>();
-
- UnorderedGrowablePipe.connect(objectProducer.getOutputPort(), distributor.getInputPort());
- distributor.getNewOutputPort().setPipe(new UnorderedGrowablePipe<TimestampObject>());
-
return pipeline;
}
@@ -152,21 +151,11 @@ public class MethodCallThroughputAnalysis17 extends Analysis {
final StopTimestampFilter stopTimestampFilter = new StopTimestampFilter();
final CollectorSink<TimestampObject> collectorSink = new CollectorSink<TimestampObject>(timestampObjects);
- final HeadPipeline<Relay<TimestampObject>, CollectorSink<TimestampObject>> pipeline = new HeadPipeline<Relay<TimestampObject>, CollectorSink<TimestampObject>>();
- pipeline.setFirstStage(relay);
- pipeline.setLastStage(collectorSink);
-
- IPipe<TimestampObject> pipe = this.pipeFactory.create(ThreadCommunication.INTER, PipeOrdering.QUEUE_BASED, false, SPSC_INITIAL_CAPACITY);
- relay.getInputPort().setPipe(pipe);
- IPipe<TimestampObject> startPipe = relay.getInputPort().getPipe();
- for (int i = 0; i < this.numInputObjects; i++) {
- startPipe.add(this.inputObjectCreator.create());
- }
- // startPipe.close();
+ IPipe<TimestampObject> startPipe = new RelayTestPipe<TimestampObject>(this.numInputObjects, this.inputObjectCreator);
startPipe.setSignal(new TerminatingSignal());
+ relay.getInputPort().setPipe(startPipe);
UnorderedGrowablePipe.connect(relay.getOutputPort(), startTimestampFilter.getInputPort());
-
UnorderedGrowablePipe.connect(startTimestampFilter.getOutputPort(), noopFilters[0].getInputPort());
for (int i = 0; i < noopFilters.length - 1; i++) {
UnorderedGrowablePipe.connect(noopFilters[i].getOutputPort(), noopFilters[i + 1].getInputPort());
@@ -174,6 +163,9 @@ public class MethodCallThroughputAnalysis17 extends Analysis {
UnorderedGrowablePipe.connect(noopFilters[noopFilters.length - 1].getOutputPort(), stopTimestampFilter.getInputPort());
UnorderedGrowablePipe.connect(stopTimestampFilter.getOutputPort(), collectorSink.getInputPort());
+ final HeadPipeline<Relay<TimestampObject>, CollectorSink<TimestampObject>> pipeline = new HeadPipeline<Relay<TimestampObject>, CollectorSink<TimestampObject>>();
+ pipeline.setFirstStage(relay);
+ pipeline.setLastStage(collectorSink);
return pipeline;
}
--
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