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/* Completion of memory_object_change_attributes
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 <stdio.h>
/* The kernel calls this (as described in <mach/memory_object.defs>)
when a memory_object_change_attributes call has completed. Read this
in combination with pager-attr.c. */
kern_return_t
_pager_seqnos_memory_object_change_completed (mach_port_t obj,
mach_port_seqno_t seq,
boolean_t maycache,
memory_object_copy_strategy_t strat)
{
struct pager *p;
struct attribute_request *ar;
p = ports_lookup_port (0, obj, _pager_class);
if (!p)
{
printf ("Bad change completed\n");
return EOPNOTSUPP;
}
mutex_lock (&p->interlock);
_pager_wait_for_seqno (p, seq);
for (ar = p->attribute_requests; ar; ar = ar->next)
if (ar->may_cache == maycache && ar->copy_strategy == strat)
{
if (ar->attrs_pending && !--ar->attrs_pending)
condition_broadcast (&p->wakeup);
break;
}
_pager_release_seqno (p, seq);
mutex_unlock (&p->interlock);
ports_port_deref (p);
return 0;
}
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