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()); + + + } + +}