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root/jsr166/jsr166/src/jsr166e/LongAdder.java

Comparing jsr166/src/jsr166e/LongAdder.java (file contents):
Revision 1.9 by jsr166, Sun Nov 18 03:07:22 2012 UTC vs.
Revision 1.12 by jsr166, Sun Jan 6 18:50:00 2013 UTC

#	Line 19 | Line 19 | import java.io.ObjectOutputStream;
19		* #longValue}) returns the current total combined across the
20		* variables maintaining the sum.
21		*
22	<	* <p> This class is usually preferable to {@link AtomicLong} when
22	>	* <p>This class is usually preferable to {@link AtomicLong} when
23		* multiple threads update a common sum that is used for purposes such
24		* as collecting statistics, not for fine-grained synchronization
25		* control.  Under low update contention, the two classes have similar
#	Line 28 | Line 28 | import java.io.ObjectOutputStream;
28		* consumption.
29		*
30		* <p>This class extends {@link Number}, but does <em>not</em> define
31	<	* methods such as {@code hashCode} and {@code compareTo} because
32	<	* instances are expected to be mutated, and so are not useful as
33	<	* collection keys.
31	>	* methods such as {@code equals}, {@code hashCode} and {@code
32	>	* compareTo} because instances are expected to be mutated, and so are
33	>	* not useful as collection keys.
34		*
35		* <p><em>jsr166e note: This class is targeted to be placed in
36		* java.util.concurrent.atomic.</em>
#	Line 85 | Line 85 | public class LongAdder extends Striped64
85
86		/**
87		* Returns the current sum.  The returned value is <em>NOT</em> an
88	<	* atomic snapshot: Invocation in the absence of concurrent
88	>	* atomic snapshot: invocation in the absence of concurrent
89		* updates returns an accurate result, but concurrent updates that
90		* occur while the sum is being calculated might not be
91		* incorporated.

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