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/*
Copyright (C) 1995 Free Software Foundation, Inc.
Written by Michael I. Bushnell.
This file is part of the GNU Hurd.
The GNU Hurd is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
The GNU Hurd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "ports.h"
#include <cthreads.h>
#include <mach/notify.h>
void
ports_no_senders (void *portstruct,
mach_port_mscount_t mscount)
{
struct port_info *pi = portstruct;
int dealloc;
mach_port_t old;
ports_interrupt_notified_rpcs (portstruct, pi->port_right,
MACH_NOTIFY_NO_SENDERS);
mutex_lock (&_ports_lock);
if ((pi->flags & PORT_HAS_SENDRIGHTS) == 0)
{
mutex_unlock (&_ports_lock);
return;
}
if (mscount >= pi->mscount)
{
dealloc = 1;
pi->flags &= ~PORT_HAS_SENDRIGHTS;
}
else
{
/* Request a new notification. The sync value is because
we might have accounted for a new sender but not actually
made the send right yet. */
mach_port_request_notification (mach_task_self (), pi->port_right,
MACH_NOTIFY_NO_SENDERS, pi->mscount,
pi->port_right,
MACH_MSG_TYPE_MAKE_SEND_ONCE, &old);
if (old)
mach_port_deallocate (mach_task_self (), old);
dealloc = 0;
}
mutex_unlock (&_ports_lock);
if (dealloc)
ports_port_deref (pi);
}
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