: I think you could use a volatile primitive boolean to control whether or not
: the index needs to be read, and also mark the index data volatile and it
: SHOULD PROBABLY work.
:
: But as stated, I don't think the performance difference is worth it.
My understanding is:
1) volatile will only help as of java 1.5 ... lucene targets 1.4
compatibility.
2) in 1.5, volatile is basically just as expensive as synchronized.
: I met these problem before indeed.The compiler did something optimized for
: me that was bad for me when I see the byte-codes.
: When I'm using a function local variable, m_indexTerms and in JDK1.5.06, it
: seems ok.
: Whether it will break in other environments, I still don't know about it.
The dangerous thing is that even if the byte code looks okay, and if it
works okay today, your app could run for a while and then all of the
sudden it could stop working because of the order the threads are run, or
becuase of an optimization the JVM applies on the fly.
-Hoss
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