bundles/org.eclipse.test.performance/src/org/eclipse/test/internal/performance/PerformanceMonitor.java

/*******************************************************************************
 * Copyright (c) 2003, 2005 IBM Corporation and others. All rights reserved. This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors: IBM Corporation - initial API and implementation
 *******************************************************************************/

package org.eclipse.test.internal.performance;

import java.util.Map;

import org.eclipse.test.internal.performance.data.Dim;
import org.eclipse.test.internal.performance.data.Scalar;

class PerformanceMonitor {

  private static PerformanceMonitor fgPerformanceMonitor;

  public static PerformanceMonitor getPerformanceMonitor() {
    if (fgPerformanceMonitor == null) {
      String os = System.getProperty("os.name"); //$NON-NLS-1$
      if (os.startsWith("Windows")) //$NON-NLS-1$
        fgPerformanceMonitor = new PerformanceMonitorWindows();
      else if (os.startsWith("Mac OS X")) //$NON-NLS-1$
        fgPerformanceMonitor = new PerformanceMonitorMac();
      else
        fgPerformanceMonitor = new PerformanceMonitorLinux();
    }
    return fgPerformanceMonitor;
  }

  protected void collectOperatingSystemCounters(Map scalars) {
    Runtime runtime = Runtime.getRuntime();
    // runtime.gc();
    addScalar(scalars, InternalDimensions.USED_JAVA_HEAP, runtime.totalMemory() - runtime.freeMemory());
  }

  protected void collectGlobalPerformanceInfo(Map scalars) {
    // no default implementation
  }

  void addScalar(Map scalars, Dim dimension, long value) {
    scalars.put(dimension, new Scalar(dimension, value));
  }
}