pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / benchmark / src / java / org / apache / lucene / benchmark / byTask / stats / Points.java

diff --git a/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/stats/Points.java b/lucene-java-3.5.0/lucene/contrib/benchmark/src/java/org/apache/lucene/benchmark/byTask/stats/Points.java
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+package org.apache.lucene.benchmark.byTask.stats;
+
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.lucene.benchmark.byTask.tasks.PerfTask;
+import org.apache.lucene.benchmark.byTask.utils.Config;
+
+
+/**
+ * Test run data points collected as the test proceeds.
+ */
+public class Points {
+
+  // stat points ordered by their start time. 
+  // for now we collect points as TaskStats objects.
+  // later might optimize to collect only native data.
+  private ArrayList<TaskStats> points = new ArrayList<TaskStats>();
+
+  private int nextTaskRunNum = 0;
+
+  private TaskStats currentStats;
+
+  /**
+   * Create a Points statistics object. 
+   */
+  public Points (Config config) {
+  }
+
+  /**
+   * Return the current task stats.
+   * the actual task stats are returned, so caller should not modify this task stats. 
+   * @return current {@link TaskStats}.
+   */
+  public List<TaskStats> taskStats () {
+    return points;
+  }
+
+  /**
+   * Mark that a task is starting. 
+   * Create a task stats for it and store it as a point.
+   * @param task the starting task.
+   * @return the new task stats created for the starting task.
+   */
+  public synchronized TaskStats markTaskStart (PerfTask task, int round) {
+    TaskStats stats = new TaskStats(task, nextTaskRunNum(), round);
+    this.currentStats = stats;
+    points.add(stats);
+    return stats;
+  }
+
+  public TaskStats getCurrentStats() {
+    return currentStats;
+  }
+  
+  // return next task num
+  private synchronized int nextTaskRunNum() {
+    return nextTaskRunNum++;
+  }
+  
+  /**
+   * mark the end of a task
+   */
+  public synchronized void markTaskEnd (TaskStats stats, int count) {
+    int numParallelTasks = nextTaskRunNum - 1 - stats.getTaskRunNum();
+    // note: if the stats were cleared, might be that this stats object is 
+    // no longer in points, but this is just ok.
+    stats.markEnd(numParallelTasks, count);
+  }
+
+  /**
+   * Clear all data, prepare for more tests.
+   */
+  public void clearData() {
+    points.clear();
+  }
+
+}