Bug ID: JDK-6784100 getTimeNanos

JDK-6784100 : getTimeNanos - CAS reduction

Type: Enhancement
Component: hotspot
Sub-Component: runtime
Affected Version: 7

Priority: P3
Status: Closed
Resolution: Fixed
OS: solaris
CPU: generic

Submitted: 2008-12-11
Updated: 2011-03-08
Resolved: 2011-03-08

Versions (Unresolved/Resolved/Fixed)

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JDK 6	JDK 7	Other
6u14Fixed	7Fixed	hs14Fixed

Related Reports

Relates :	JDK-6863420 - os::javaTimeNanos() go backward on Solaris x86
Relates :	JDK-6876279 - currentTimeMillis and nanoTime are too expensive
Relates :	JDK-6864866 - add a flag to use result of gethrtime() directly in os::getTimeNanos() on Solaris and OS X

Description

Performance enhancement - reducing number of CAS' for callers of getTimeNanos()

Comments

EVALUATION http://hg.openjdk.java.net/jdk7/hotspot-rt/hotspot/rev/8a25d96bcf08

20-12-2008

EVALUATION See "comments" section for the proposed fix.

16-12-2008