[logback-dev] svn commit: r1592 - in logback/trunk/logback-core/src: main/java/ch/qos/logback/core test/java/ch/qos/logback/core

[noreply.ceki at qos.ch]

Author: ceki
Date: Fri Sep 14 09:20:03 2007
New Revision: 1592

Added:
   logback/trunk/logback-core/src/main/java/ch/qos/logback/core/StopWatch.java
   logback/trunk/logback-core/src/test/java/ch/qos/logback/core/StopWatchTest.java

Log:
- Adding StopWatch functionaliry to logback core

Added: logback/trunk/logback-core/src/main/java/ch/qos/logback/core/StopWatch.java
==============================================================================
--- (empty file)
+++ logback/trunk/logback-core/src/main/java/ch/qos/logback/core/StopWatch.java	Fri Sep 14 09:20:03 2007
@@ -0,0 +1,87 @@
+package ch.qos.logback.core;
+
+import java.text.DecimalFormat;
+
+public class StopWatch {
+
+  private static final int STARTED = 1;
+  private static final int STOPPED = 2;
+  private static final int NANOS_IN_ONE_MICROSECOND = 1000;
+  private static final int NANOS_IN_ONE_MILLISECOND = 1000*1000;
+  private static final int NANOS_IN_ONE_SECOND = 1000*1000*1000;
+  private static final DecimalFormat DECIMAL_FORMAT = new DecimalFormat("0.000");
+  
+  final String name;
+  final long startTime;
+  long stopTime;
+  int status;
+
+  StopWatch(String name) {
+    this.name = name;
+    this.startTime = System.nanoTime();
+    this.status = STARTED;
+  }
+
+  StopWatch stop() {
+    this.status = STOPPED;
+    this.stopTime = System.nanoTime();
+    return this;
+  }
+
+  @Override
+  public String toString() {
+    StringBuffer buf = new StringBuffer();
+    buf.append("StopWatch [");
+    buf.append(name);
+    buf.append("] ");
+
+    switch (status) {
+    case STARTED:
+      buf.append("STARTED");
+      break;
+    case STOPPED:
+      buf.append("STOPPED at ");
+      if(getResultInNanos() < 10*NANOS_IN_ONE_MICROSECOND) {
+        buf.append(getResultInNanos());
+        buf.append(" nanoseconds.");
+      }
+      else if (getResultInNanos() < 10*NANOS_IN_ONE_MILLISECOND) {
+        buf.append(getResultInMicros());
+        buf.append(" microseconds.");
+      } else if (getResultInNanos() < 5*NANOS_IN_ONE_SECOND)  {
+        
+        buf.append(getResultInMillis());
+        buf.append(" milliseconds.");
+      } else {
+        double seconds = getResultInSeconds();
+        buf.append(DECIMAL_FORMAT.format(seconds));
+        buf.append(" seconds.");
+        
+      }
+      break;
+    default:
+      new IllegalStateException("Status " + status + " is not expected");
+    }
+    return buf.toString();
+  }
+
+  public final long getResultInNanos() {
+    if (status == STARTED) {
+      return 0;
+    } else {
+      return stopTime - startTime;
+    }
+  }
+
+  public final long getResultInMicros() {
+    return getResultInNanos() / NANOS_IN_ONE_MICROSECOND;
+  }
+
+  public final long getResultInMillis() {
+    return getResultInNanos() / NANOS_IN_ONE_MILLISECOND;
+  }
+  
+  public final double getResultInSeconds() {
+    return ((double) getResultInNanos() / NANOS_IN_ONE_SECOND);
+  }
+}

Added: logback/trunk/logback-core/src/test/java/ch/qos/logback/core/StopWatchTest.java
==============================================================================
--- (empty file)
+++ logback/trunk/logback-core/src/test/java/ch/qos/logback/core/StopWatchTest.java	Fri Sep 14 09:20:03 2007
@@ -0,0 +1,28 @@
+package ch.qos.logback.core;
+
+import junit.framework.TestCase;
+
+public class StopWatchTest extends TestCase {
+
+  public StopWatchTest(String name) {
+    super(name);
+  }
+
+  protected void setUp() throws Exception {
+    super.setUp();
+  }
+
+  protected void tearDown() throws Exception {
+    super.tearDown();
+  }
+  
+  public void testBasic() throws InterruptedException {
+    StopWatch sw = new StopWatch("testBasic");
+    
+    Thread.sleep(55100);
+    System.out.println(sw.stop().toString());
+    
+    
+  }
+
+}