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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 <assert.h>
#include <cthreads.h>
#include <hurd/ihash.h>
#include <mach/notify.h>
void *ports_intern_external_port (struct port_bucket *bucket,
mach_port_t port,
size_t size,
struct port_class *class)
{
error_t err;
mach_port_status_t stat;
struct port_info *pi;
mach_port_t foo;
err = mach_port_get_receive_status (mach_task_self (), port, &stat);
assert_perror (err);
if (size < sizeof (struct port_info))
size = sizeof (struct port_info);
pi = malloc (size);
assert (pi);
pi->class = class;
pi->refcnt = 1 + !!stat.mps_srights;
pi->weakrefcnt = 0;
pi->cancel_threshhold = 0;
pi->mscount = stat.mps_mscount;
pi->flags = stat.mps_srights ? PORT_HAS_SENDRIGHTS : 0;
pi->port_right = port;
pi->current_rpcs = 0;
pi->bucket = bucket;
mutex_lock (&_ports_lock);
loop:
if (class->flags & PORT_CLASS_NO_ALLOC)
{
class->flags |= PORT_CLASS_ALLOC_WAIT;
condition_wait (&_ports_block, &_ports_lock);
goto loop;
}
if (bucket->flags & PORT_BUCKET_NO_ALLOC)
{
bucket->flags |= PORT_BUCKET_ALLOC_WAIT;
condition_wait (&_ports_block, &_ports_lock);
goto loop;
}
err = ihash_add (bucket->htable, port, pi, &pi->hentry);
assert_perror (err);
pi->next = class->ports;
pi->prevp = &class->ports;
if (class->ports)
class->ports->prevp = &pi->next;
class->ports = pi;
bucket->count++;
class->count++;
mutex_unlock (&_ports_lock);
mach_port_move_member (mach_task_self (), port, bucket->portset);
if (stat.mps_srights)
{
err = mach_port_request_notification (mach_task_self (), port,
MACH_NOTIFY_NO_SENDERS,
stat.mps_mscount,
port, MACH_MSG_TYPE_MAKE_SEND_ONCE,
&foo);
assert_perror (err);
if (foo != MACH_PORT_NULL)
mach_port_deallocate (mach_task_self (), foo);
}
return pi;
}
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