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Outline of using tracers for profiling
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...-2.3/src/main/java/org/neo4j/cypher/internal/compiler/v2_3/birk/QueryExecutionTracer.java
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| /* | ||
| * Copyright (c) 2002-2015 "Neo Technology," | ||
| * Network Engine for Objects in Lund AB [http://neotechnology.com] | ||
| * | ||
| * This file is part of Neo4j. | ||
| * | ||
| * Neo4j is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| package org.neo4j.cypher.internal.compiler.v2_3.birk; | ||
|
|
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| import org.neo4j.cypher.internal.compiler.v2_3.planDescription.Id; | ||
|
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| public interface QueryExecutionTracer | ||
| { | ||
| QueryExecutionEvent executeQuery( Id queryId ); | ||
|
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| QueryExecutionTracer NONE = new QueryExecutionTracer() | ||
| { | ||
| @Override | ||
| public QueryExecutionEvent executeQuery( Id queryId ) | ||
| { | ||
| return QueryExecutionEvent.NONE; | ||
| } | ||
| }; | ||
| } |
167 changes: 167 additions & 0 deletions
167
...src/main/java/org/neo4j/cypher/internal/compiler/v2_3/birk/profiling/ProfilingTracer.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,167 @@ | ||
| /* | ||
| * Copyright (c) 2002-2015 "Neo Technology," | ||
| * Network Engine for Objects in Lund AB [http://neotechnology.com] | ||
| * | ||
| * This file is part of Neo4j. | ||
| * | ||
| * Neo4j is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
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| package org.neo4j.cypher.internal.compiler.v2_3.birk.profiling; | ||
|
|
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| import java.util.HashMap; | ||
| import java.util.Map; | ||
|
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| import org.neo4j.cypher.internal.compiler.v2_3.birk.QueryExecutionEvent; | ||
| import org.neo4j.cypher.internal.compiler.v2_3.birk.QueryExecutionTracer; | ||
| import org.neo4j.cypher.internal.compiler.v2_3.planDescription.Id; | ||
|
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| public class ProfilingTracer implements QueryExecutionTracer | ||
| { | ||
| public interface ProfilingInformation | ||
| { | ||
| long time(); | ||
| long dbHits(); | ||
| long rows(); | ||
| } | ||
|
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| public interface Clock | ||
| { | ||
| long nanoTime(); | ||
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| Clock SYSTEM_TIMER = new Clock() | ||
| { | ||
| @Override | ||
| public long nanoTime() | ||
| { | ||
| return System.nanoTime(); | ||
| } | ||
| }; | ||
| } | ||
|
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| private static final Data ZERO = new Data(); | ||
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| private final Clock clock; | ||
| private final Map<Id, Data> data = new HashMap<>(); | ||
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| public ProfilingTracer() | ||
| { | ||
| this( Clock.SYSTEM_TIMER ); | ||
| } | ||
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| ProfilingTracer( Clock clock ) | ||
| { | ||
| this.clock = clock; | ||
| } | ||
|
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| public ProfilingInformation get( Id query ) | ||
| { | ||
| Data value = data.get( query ); | ||
| return value == null ? ZERO : value; | ||
| } | ||
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| public long timeOf( Id query ) | ||
| { | ||
| return get( query ).time(); | ||
| } | ||
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| public long dbHitsOf( Id query ) | ||
| { | ||
| return get( query ).dbHits(); | ||
| } | ||
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| public long rowsOf( Id query ) | ||
| { | ||
| return get( query ).rows(); | ||
| } | ||
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| @Override | ||
| public QueryExecutionEvent executeQuery( Id queryId ) | ||
| { | ||
| Data data = this.data.get( queryId ); | ||
| if ( data == null && queryId != null ) | ||
| { | ||
| this.data.put( queryId, data = new Data() ); | ||
| } | ||
| return new ExecutionEvent( clock, data ); | ||
| } | ||
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| private static class ExecutionEvent implements QueryExecutionEvent | ||
| { | ||
| private final long start; | ||
| private final Clock clock; | ||
| private final Data data; | ||
| private long hitCount; | ||
| private long rowCount; | ||
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| public ExecutionEvent( Clock clock, Data data ) | ||
| { | ||
| this.clock = clock; | ||
| this.data = data; | ||
| this.start = clock.nanoTime(); | ||
| } | ||
|
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| @Override | ||
| public void close() | ||
| { | ||
| long executionTime = clock.nanoTime() - start; | ||
| if ( data != null ) | ||
| { | ||
| data.update( executionTime, hitCount, rowCount ); | ||
| } | ||
| } | ||
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| @Override | ||
| public void dbHit() | ||
| { | ||
| hitCount++; | ||
| } | ||
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| @Override | ||
| public void row() | ||
| { | ||
| rowCount++; | ||
| } | ||
| } | ||
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| private static class Data implements ProfilingInformation | ||
| { | ||
| private long time, hits, rows; | ||
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| public void update( long time, long hits, long rows ) | ||
| { | ||
| this.time += time; | ||
| this.hits += hits; | ||
| this.rows += rows; | ||
| } | ||
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| @Override | ||
| public long time() | ||
| { | ||
| return time; | ||
| } | ||
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| @Override | ||
| public long dbHits() | ||
| { | ||
| return hits; | ||
| } | ||
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| @Override | ||
| public long rows() | ||
| { | ||
| return rows; | ||
| } | ||
| } | ||
| } |
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50 changes: 50 additions & 0 deletions
50
...-2.3/src/main/scala/org/neo4j/cypher/internal/compiler/v2_3/birk/QueryExecutionEvent.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| /* | ||
| * Copyright (c) 2002-2015 "Neo Technology," | ||
| * Network Engine for Objects in Lund AB [http://neotechnology.com] | ||
| * | ||
| * This file is part of Neo4j. | ||
| * | ||
| * Neo4j is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
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| package org.neo4j.cypher.internal.compiler.v2_3.birk; | ||
|
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| public interface QueryExecutionEvent extends AutoCloseable | ||
| { | ||
| void dbHit(); | ||
|
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| void row(); | ||
|
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| @Override | ||
| void close(); | ||
|
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| QueryExecutionEvent NONE = new QueryExecutionEvent() | ||
| { | ||
| @Override | ||
| public void dbHit() | ||
| { | ||
| } | ||
|
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| @Override | ||
| public void row() | ||
| { | ||
| throw new UnsupportedOperationException( "not implemented" ); | ||
| } | ||
|
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| @Override | ||
| public void close() | ||
| { | ||
| } | ||
| }; | ||
| } |
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