CVS: cvs.openbsd.org: src

[Kurt Miller <kurt_(_at_)_cvs_(_dot_)_openbsd_(_dot_)_org>]

CVSROOT:	/cvs
Module name:	src
Changes by:	kurt_(_at_)_cvs_(_dot_)_openbsd_(_dot_)_org	2006/10/02 20:59:36

Modified files:
	lib/libpthread/uthread: pthread_private.h uthread_accept.c 
	                        uthread_connect.c uthread_kern.c 
	                        uthread_kevent.c uthread_poll.c 
	                        uthread_read.c uthread_readv.c 
	                        uthread_recvfrom.c uthread_recvmsg.c 
	                        uthread_select.c uthread_sendmsg.c 
	                        uthread_sendto.c uthread_write.c 
	                        uthread_writev.c 

Log message:
Last Part of file descriptor race and deadlock corrections.

When a fd enters the closing state prevent any threads from
polling the fd and reschedule the thread with the closing_fd
flag set. This fixes a class of deadlocks where a thread is
blocked waiting for data (that may never arrive) and a later
thread calls close() or dup2() on the fd. okay brad@