The problem arises because the destructor for the shared object is being called from each thread that has a copy of it.

One way to avoid that is to add your own destructor method and defer destruction until the called by the last thread that has a copy.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
"I'd rather go naked than blow up my ass"

In reply to Re^3: Attempt to free non-existent shared string 'io_socket_type', Perl interpreter: 0x84972e0 during global destruction. by BrowserUk
in thread Attempt to free non-existent shared string 'io_socket_type', Perl interpreter: 0x84972e0 during global destruction. by madhurikl

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