bundles/org.simantics.utils/src/org/simantics/utils/logging/TimeLogger.java

   1 package org.simantics.utils.logging;
   2
   3 import java.text.DecimalFormat;
   4 import java.text.NumberFormat;
   5
   6 public class TimeLogger {
   7     public static final boolean TIME_LOGGING_ENABLED = false;
   8
   9     private static final NumberFormat TIME_FORMAT = new DecimalFormat("0.000");
  10
  11     private static long BEGIN_TIME = System.nanoTime();
  12
  13     private static void printCurrentTime() {
  14         double time = (System.nanoTime() - BEGIN_TIME) * 1e-9;
  15         System.out.print("[");
  16         System.out.print(TIME_FORMAT.format(time));
  17         System.out.print(" s] ");
  18     }
  19
  20     public static void resetTimeAndLog(String message) {
  21         if(TIME_LOGGING_ENABLED) {
  22             BEGIN_TIME = System.nanoTime();
  23             printCurrentTime();
  24             System.out.print(message);
  25             System.out.print(" ");
  26             for(int i=0;i<140-message.length();++i)
  27                 System.out.print("=");
  28             System.out.println();
  29         }
  30     }
  31
  32     public static void resetTimeAndLog(Class<?> clazz, String method) {
  33         if(TIME_LOGGING_ENABLED)
  34             resetTimeAndLog(clazz.getSimpleName() + "." + method);
  35     }
  36
  37     public static void resetTime() {
  38         if(TIME_LOGGING_ENABLED)
  39             BEGIN_TIME = System.nanoTime();
  40     }
  41
  42     public static void log(String message) {
  43         if(TIME_LOGGING_ENABLED) {
  44             printCurrentTime();
  45             System.out.println(message);
  46         }
  47     }
  48
  49     public static void log(Class<?> clazz, String method) {
  50         if(TIME_LOGGING_ENABLED)
  51             log(clazz.getSimpleName() + "." + method);
  52     }
  53 }