I've been trying to understand the behavior of cflock so I wrote the
following test:
<cfscript>
writeoutput(dateformat(now(), 'mm/dd/yy') & " " & timeformat(now(),
'HH:mm:ss aa') & "<br>");
flush();
try
{
lock name="mylock" timeout="1" type="exclusive" throwontimeout="true"
{
writeoutput("Sleeping...<br/>");
flush();
sleep(10000);
writeoutput(dateformat(now(), 'mm/dd/yy') & " " &
timeformat(now(), 'HH:mm:ss aa') & "<br>");
}
}
catch(any e)
{
writedump(e);
}
writeoutput("That's All Folks!<br/>");
</cfscript>
When I open two tabs and refresh this page one or two seconds apart, I was
expecting that the first one would obtain the lock, sleep 10 seconds, then
continue.
I thought the second tab would try to obtain the lock, then fail after 1
second and run the "catch" code.
1. The timeout doesn't seem to do anything. It seems like it will wait
until the first tab completes then continue.
2. I had thought of the code inside the cflock as the only code that would
be locked, but the output of the second tab displays the time that the
first tab completed and the second timestamp 10 seconds after that, so it
seems like the entire page was locked, not just the code inside the lock.
I'm not saying there is a bug here, maybe I just am not using cflock
correctly.
Am I doing something wrong here?
Thanks,
John Moss
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