Brothers-

I have (what seems to be) a trivial problem with threads. I have an object, and I'd like for it to be able to cond_signal to alert any interested threads of interesting events. My idea was to have different hash values store the signals.

However, all my attempts to lock the values of a hash fail with the error: "lock can only be used on shared values". Here is an example:
use strict; use warnings;
use threads;
use threads::shared;

# make the shared value
my %hash : shared;

# create the key I want
$hash{testElem} = 0;

# attempt to lock it
lock $hash{testElem};
# which fails.

[download]
Any suggestions? As far as I know, this should be a valid operation.

In reply to Locking hash values by bucky0

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