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* msg.c (check_msgport_death): New function.
(S_proc_getmsgport): Use it.
* proc.h (check_msgport_death): Provide prototype.
* info.c (S_proc_getprocinfo): Call check_msgport_death to make
sure that our knowledge about P's message port is up to date.
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* notify.c (do_mach_notify_dead_name): Remove unnecessary braces.
* msg.c (S_proc_setmsgport): Remove unused variable FOO.
(S_proc_getmsgport): Only check if the message port is still alive
if it is not MACH_PORT_NULL. Use mach_port_type instead of
mach_port_get_refs to check if the port is dead.
* mgt.c (S_proc_reassign): Use mach_port_destroy to release the
old task port.
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* notify.c (do_mach_notify_dead_name): Don't check against
P->p_msgport anymore.
* msg.c (message_port_dead): Delete function.
(S_proc_setmsgport): Don't request a dead-name notification
anymore.
(S_proc_getmsgport): Check to see if P->p_msgport is dead before
returning it.
* mgt.c (S_proc_reassign): Only use mach_port_deallocate to
release P->msgport.
(process_has_exited): Likewise.
* proc.h (message_port_dead): Delete prototype.
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(check_message_return): Use condition_broadcast instead of
continuation stuff.
(check_message_dying): Likewise.
(S_proc_getmsgport): Use condition_wait instead of continuation stuff;
never return EBUSY.
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return the correct port in that by-hand reply.
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share the same memory in the proc structure.
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