cygthread::cygthread() hang

Christopher Faylor
Wed Apr 9 17:01:00 GMT 2003

On Wed, Apr 09, 2003 at 12:55:53PM -0400, Pierre A. Humblet wrote:
>Joe Buehler wrote:
>> Christopher Faylor wrote:
>> > Yep.  I guess it's possible that there are more leaks than just the
>> > stack one.
>> OK, I think I know what is going on.  The stack address for terminated
>> threads is walking up through memory until it hits the top and then
>> CreateThread() fails.  So the thread stack is not being freed.
>> Looking at the API documentation, it looks like VirtualFree() is not being
>> used correctly.  The VirtualQuery() function is returning a region of size
>> 4096.  So probably that is all that is committed, the rest is reserved,
>> and VirtualFree is only freeing the committed memory, since everything has
>> to be in the same state.  I'll call VirtualFree() twice like the docs say
>> and see if that fixes it.
>Shouldn't it simply be MEM_RELEASE? Right now the committed memory would
>change state to reserved, no freed.

I think, as Joe implied, it should be MEM_DECOMMIT followed by


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