Re: Win32 open items - Mailing list pgsql-patches

From Tom Lane
Subject Re: Win32 open items
Date
Msg-id 12353.1099166332@sss.pgh.pa.us
Whole thread Raw
In response to Re: Win32 open items  ("Magnus Hagander" <mha@sollentuna.net>)
List pgsql-patches
"Magnus Hagander" <mha@sollentuna.net> writes:
>> We don't need the cancelConnLock if this is done properly (at least,
>> assuming that storing a pointer is atomic, which seems reasonable).

> Anyway, consider this scenario. Thread A is the mainloop thread, Thread
> B is the thread that handles Ctrl-C. What if Thread B starts its run and
> starts reading off the pointer. Before it's done, it's pre-empted, and
> Thread A starts executing. Thread A does a free() on the memory pointed
> to by the pointer. When control goes back to Thread B, it will definitly
> die.

Good point.  Never mind that claim then ...

            regards, tom lane

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