> > The problem with this is that PQrequestCancel() is not thread-safe.
>
> What is your basis for asserting that?
Looking at the source code?
We are talking about two different threads *accessing the same PGconn*.
For example:
if (conn->sock < 0)
{
strcpy(conn->errorMessage.data,
"PQrequestCancel() -- connection is not
open\n");
conn->errorMessage.len =
strlen(conn->errorMessage.data);
#ifdef WIN32
WSASetLastError(save_errno);
#else
errno = save_errno;
#endif
return FALSE;
}
What if another thread is modifying or reading the errorMessage variable
at the same time? Or what if another thread just PQfinished() the entire
conenction, which causes a free() call? None of this stuff is
thread-protected...
It may be re-entrant-safe, but I don't beleive it's thread safe. libpq
in general is only thread safe as long as a single connection is only
used on a single thread.
//Magnus
