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/* Implementation of memory_object_init for pager library
Copyright (C) 1994, 1995 Free Software Foundation
This program 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.
This program 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 "priv.h"
#include "memory_object_S.h"
#include <stdio.h>
/* Implement the object initialiation call as described in
<mach/memory_object.defs>. */
kern_return_t
_pager_seqnos_memory_object_init (mach_port_t object,
mach_port_seqno_t seqno,
mach_port_t control,
mach_port_t name,
vm_size_t pagesize)
{
struct pager *p;
p = ports_lookup_port (0, object, _pager_class);
if (!p);
return EOPNOTSUPP;
if (pagesize != __vm_page_size)
{
printf ("incg init: bad page size");
goto out;
}
mutex_lock (&p->interlock);
_pager_wait_for_seqno (p, seqno);
if (p->pager_state != NOTINIT)
{
#ifdef KERNEL_INIT_RACE
struct pending_init *i = malloc (sizeof (struct pending_init));
printf ("pager out-of-sequence init\n");
i->control = control;
i->name = name;
i->next = 0;
if (p->init_tail)
p->init_tail->next = i;
else
p->init_head = i;
p->init_tail = i;
#else
printf ("pager dup init\n");
#endif
goto out;
}
p->memobjcntl = control;
p->memobjname = name;
memory_object_ready (control, p->may_cache, p->copy_strategy);
p->pager_state = NORMAL;
_pager_release_seqno (p, seqno);
mutex_unlock (&p->interlock);
out:
ports_port_deref (p);
return 0;
}
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