https://issues.apache.org/bugzilla/show_bug.cgi?id=49972
Mark Thomas changed:
What|Removed |Added
Status|NEW |RESOLVED
Resolution|
https://issues.apache.org/bugzilla/show_bug.cgi?id=49972
--- Comment #9 from Mark Thomas 2010-10-07 10:07:22 EDT ---
Fixed in trunk and proposed for 6.0.x
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https://issues.apache.org/bugzilla/show_bug.cgi?id=49972
--- Comment #8 from Kostya Serebryany
2010-09-23 04:03:35 EDT ---
>> If there were no possibility of an exception, your statement would be true.
I am not sure about this particular case, but in general a compiler (JIT) may
statically figur
https://issues.apache.org/bugzilla/show_bug.cgi?id=49972
--- Comment #7 from Chuck Caldarale 2010-09-22
12:58:53 EDT ---
(In reply to comment #5)
> Also, there are problem with 64 bit variable currentDateGenerated
This is a problem (albeit a fairly minor one); technically, the field should be
m
https://issues.apache.org/bugzilla/show_bug.cgi?id=49972
--- Comment #6 from Chuck Caldarale 2010-09-22
12:53:46 EDT ---
(In reply to comment #4)
> > The simple fix is to just reverse these two lines:
> I afraid, it won't work.
> The compiler is free to reverse these lines back.
Not in this ca
https://issues.apache.org/bugzilla/show_bug.cgi?id=49972
--- Comment #5 from Sergey Vorobyev 2010-09-22
11:46:36 EDT ---
Also, there are problem with 64 bit variable currentDateGenerated
http://java.sun.com/docs/books/jls/third_edition/html/memory.html
quote:
For the purposes of the Java progra
https://issues.apache.org/bugzilla/show_bug.cgi?id=49972
--- Comment #4 from Kostya Serebryany
2010-09-22 10:53:58 EDT ---
>> The simple fix is to just reverse these two lines:
I afraid, it won't work.
The compiler is free to reverse these lines back.
(maybe not in this particular case, but ce
https://issues.apache.org/bugzilla/show_bug.cgi?id=49972
--- Comment #3 from Chuck Caldarale 2010-09-22
10:20:36 EDT ---
(In reply to comment #2)
> It looks scarier than that.
> In short, see
> http://www.cs.umd.edu/~pugh/java/memoryModel/DoubleCheckedLocking.html
Not all double-checked lockin
https://issues.apache.org/bugzilla/show_bug.cgi?id=49972
--- Comment #2 from konstantin.s.serebry...@gmail.com 2010-09-22 09:56:49 EDT
---
It looks scarier than that.
In short, see
http://www.cs.umd.edu/~pugh/java/memoryModel/DoubleCheckedLocking.html
Case1:
Thread1 executes:
long no
https://issues.apache.org/bugzilla/show_bug.cgi?id=49972
konstantin.s.serebry...@gmail.com changed:
What|Removed |Added
CC||konstantin.s.ser
https://issues.apache.org/bugzilla/show_bug.cgi?id=49972
--- Comment #1 from Sebb 2010-09-22 06:53:24 EDT ---
The currentDateGenerated field is read outside the synch. block, and is not
volatile.
So if one thread calls getCurrentDate() and updates the field, another thread
calling getCurrentDate
https://issues.apache.org/bugzilla/show_bug.cgi?id=49972
Sergey Vorobyev changed:
What|Removed |Added
CC||sergeyvorob...@google.com
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