Any idea why drawterm-osx hangs when I try to close it with the dock
icon or by issuing shutdown from the apple menu? I am not sure what
signal is sent. I've included a capture from spincontrol in case that
helps.

Ian

Call graph:
6001 Thread_5903
6001 start
6001 _start
6001 main
6001 cpumain
6001 exportfs
6001 read9pmsg
6001 readn
6001 sysread
6001 _syspread
6001 kread
6001 sslread
6001 sslbread
6001 ensure
6001 devbread
6001 ipread
6001 recvfrom$NOCANCEL$UNIX2003
6001 recvfrom$NOCANCEL$UNIX2003
6001 Thread_5a03
6001 thread_start
6001 _pthread_start
6001 tramp
6001 blockingslave
6001 slaveread
6001 syspread
6001 _syspread
6001 kread
6001 consread
6001 ksleep
6001 procsleep
6001 pthread_cond_wait$UNIX2003
6001 __semwait_signal
6001 __semwait_signal
6001 Thread_5b03
6001 thread_start
6001 _pthread_start
6001 tramp
6001 blockingslave
6001 slaveread
6001 syspread
6001 _syspread
6001 kread
6001 mouseread
6001 ksleep
6001 procsleep
6001 pthread_cond_wait$UNIX2003
6001 __semwait_signal
6001 __semwait_signal
6001 Thread_5c03
6001 thread_start
6001 _pthread_start
6001 tramp
6001 blockingslave
6001 slaveread
6001 syspread
6001 _syspread
6001 kread
6001 consread
6001 qread
6001 qwait
6001 ksleep
6001 procsleep
6001 pthread_cond_wait$UNIX2003
6001 __semwait_signal
6001 __semwait_signal

Total number in stack (recursive counted multiple, when >=5):

Sort by top of stack, same collapsed (when >= 5):
__semwait_signal 18003
recvfrom$NOCANCEL$UNIX2003 6001