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| org.apache.openjpa.lib.util.concurrent</FONT> |
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| Interface NanoTimer</H2> |
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| <DL> |
| <DT><PRE>public interface <B>NanoTimer</B></DL> |
| </PRE> |
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| <P> |
| Interface to specify custom implementation of precise timer. |
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| <P> |
| <DL> |
| <DT><B>Version:</B></DT> |
| <DD>1.0</DD> |
| <DT><B>Author:</B></DT> |
| <DD>Dawid Kurzyniec</DD> |
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| <CODE> long</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../../org/apache/openjpa/lib/util/concurrent/NanoTimer.html#nanoTime()">nanoTime</A></B>()</CODE> |
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| Returns the current value of the most precise available system timer, |
| in nanoseconds.</TD> |
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| <A NAME="nanoTime()"><!-- --></A><H3> |
| nanoTime</H3> |
| <PRE> |
| long <B>nanoTime</B>()</PRE> |
| <DL> |
| <DD>Returns the current value of the most precise available system timer, |
| in nanoseconds. This method can only be used to measure elapsed time and |
| is not related to any other notion of system or wall-clock time. The |
| value returned represents nanoseconds since some fixed but arbitrary |
| time(perhaps in the future, so values may be negative). This method |
| provides nanosecond precision, but not necessarily nanosecond accuracy. |
| No guarantees are made about how frequently values change. Differences |
| in successive calls that span greater than approximately 292 years |
| (263 nanoseconds) will not accurately compute elapsed time due to |
| numerical overflow. |
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| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>The current value of the system timer, in nanoseconds.</DL> |
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