From 07d6cd77376586ced3f82578cff845dcc4f906d3 Mon Sep 17 00:00:00 2001 From: "Michael I. Bushnell" Date: Fri, 20 May 1994 22:37:57 +0000 Subject: Initial revision --- libpager/chg-compl.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 libpager/chg-compl.c diff --git a/libpager/chg-compl.c b/libpager/chg-compl.c new file mode 100644 index 00000000..877a6f4d --- /dev/null +++ b/libpager/chg-compl.c @@ -0,0 +1,54 @@ +/* Completion of memory_object_change_attributes + Copyright (C) 1994 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. */ + +/* The kernel calls this (as described in ) + 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; + int wakeup; + + + if (!(p = ports_check_port_type (obj, pager_port_type))) + { + 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 + && !--ar->attrs_pending) + break; + + if (ar) + condition_broadcast (&p->wakeup); + + _pager_release_seqno (p); + mutex_unlock (&p->interlock); + return 0; +} + + -- cgit v1.2.3