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package org.apache.qpid.tools;
/**
* In the future this will be replaced by a Clock abstraction
* that can utilize a realtime clock when running in RT Java.
*/
public class Clock
{
private static Precision precision;
private static long offset = -1; // in nano secs
public enum Precision
{
NANO_SECS, MILI_SECS;
static Precision getPrecision(String str)
{
if ("mili".equalsIgnoreCase(str))
{
return MILI_SECS;
}
else
{
return NANO_SECS;
}
}
};
static
{
precision = Precision.getPrecision(System.getProperty("precision","mili"));
//offset = Long.getLong("offset",-1);
System.out.println("Using precision : " + precision + " and offset " + offset);
}
public static Precision getPrecision()
{
return precision;
}
public static long getTime()
{
if (precision == Precision.NANO_SECS)
{
if (offset == -1)
{
return System.nanoTime();
}
else
{
return System.nanoTime() + offset;
}
}
else
{
if (offset == -1)
{
return System.currentTimeMillis();
}
else
{
return System.currentTimeMillis() + offset/convertToMiliSecs();
}
}
}
public static long convertToSecs()
{
if (precision == Precision.NANO_SECS)
{
return 1000000000;
}
else
{
return 1000;
}
}
public static long convertToMiliSecs()
{
if (precision == Precision.NANO_SECS)
{
return 1000000;
}
else
{
return 1;
}
}
}
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