<div>There is just one interpretation of "thread-safe": All operations on an object are synchronized to avoid race conditions when two threads operate concurrently on an object.</div><div><br></div><div>Therefore it is, for instance, possible for two different threads to call, say, insert(): Locks ensure that one thread finishes the insertion before the other one is permitted to enter the critical section.</div>
<div><br></div><div>Notice, also, that a method such as fireUntilHalt() would be useless if the method would not guarantee proper synchronization while other threads (who else?) insert or modify or retract.</div><div><br>
</div><div>Mark's statement "Each of the working memory actions hold a lock, so only one thread at a time can enter." is somewhat misleading - there isn't one lock "held" by "each of the WM actions". There is one lock to be acquired and released by each action.</div>
<div><br></div><div>-W</div><br><div class="gmail_quote">On 10 February 2012 23:46, apache <span dir="ltr"><<a href="mailto:apache.zoom@yahoo.com">apache.zoom@yahoo.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Mark<br>
the first link in my previous post says something contradictory to what you<br>
mentioned. I understand that one thread at a time can use the session just<br>
not 2 or more threads at the same time . Is that what you meant too ?<br>
<span class="HOEnZb"><font color="#888888"><br>
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