This is the mail archive of the
cygwin@cygwin.com
mailing list for the Cygwin project.
Cygwin handle leak in net.cc
- To: <cygwin at cygwin dot com>
- Subject: Cygwin handle leak in net.cc
- From: "Joe Hagen" <jdhagen at chorus dot net>
- Date: Sun, 3 Jun 2001 14:50:12 -0500
Chris,
I believe there's a handle leak occurring in
net.cc.
The functions recv/recfrom and send/sendto use
the wsock_event class that obtains a handle using
WSACreateEvent.
wsock_event::prepare allocates the handle.
When this class is used, if wsock_event::wait isn't
invoked, the handle won't be freed.
I observed this in the recv function.
In Windows NT's Task Manager, I was watching
fetchmail's handle count, and it quickly grew to 60,000.
I modified the fetchmail source to obtain its handle
count using NtQueryInformationProcess from NTDLL.DLL,
and recv() was the culprit.
If the wsock_event class was modified with a destructor
that did this:
wsock_event::~wsock_event
{
if (event)
{
WSACloseEvent(event);
event=0;
}
}
I think this would fix the problem.
This would ensure the handle is freedl when
the object goes out of scope.
Joe
--
Want to unsubscribe from this list?
Check out: http://cygwin.com/ml/#unsubscribe-simple