21  * questions.
  22  */
  23 package org.graalvm.compiler.debug;
  24 
  25 import com.sun.management.ThreadMXBean;
  26 
  27 /**
  28  * Tracks memory usage within a scope using {@link ThreadMXBean}. This facility should be employed
  29  * using the try-with-resources pattern:
  30  *
  31  * <pre>
  32  * try (DebugMemUseTracker.Closeable a = memUseTracker.start()) {
  33  *     // the code to measure
  34  * }
  35  * </pre>
  36  */
  37 public interface DebugMemUseTracker {
  38 
  39     /**
  40      * Creates a point from which memory usage will be recorded if memory use tracking is
  41      * {@linkplain Debug#isMemUseTrackingEnabled() enabled}.
  42      *
  43      * @return an object that must be closed once the activity has completed to add the memory used
  44      *         since this call to the total for this tracker
  45      */
  46     DebugCloseable start();
  47 
  48     /**
  49      * Gets the current value of this tracker.
  50      */
  51     long getCurrentValue();
  52 }

  21  * questions.
  22  */
  23 package org.graalvm.compiler.debug;
  24 
  25 import com.sun.management.ThreadMXBean;
  26 
  27 /**
  28  * Tracks memory usage within a scope using {@link ThreadMXBean}. This facility should be employed
  29  * using the try-with-resources pattern:
  30  *
  31  * <pre>
  32  * try (DebugMemUseTracker.Closeable a = memUseTracker.start()) {
  33  *     // the code to measure
  34  * }
  35  * </pre>
  36  */
  37 public interface DebugMemUseTracker {
  38 
  39     /**
  40      * Creates a point from which memory usage will be recorded if memory use tracking is
  41      * {@linkplain DebugContext#isMemUseTrackingEnabled() enabled}.
  42      *
  43      * @return an object that must be closed once the activity has completed to add the memory used
  44      *         since this call to the total for this tracker
  45      */
  46     DebugCloseable start();
  47 
  48     /**
  49      * Gets the current value of this tracker.
  50      */
  51     long getCurrentValue();
  52 }