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-rw-r--r--libpager/object-terminate.c94
1 files changed, 94 insertions, 0 deletions
diff --git a/libpager/object-terminate.c b/libpager/object-terminate.c
new file mode 100644
index 00000000..251fc6db
--- /dev/null
+++ b/libpager/object-terminate.c
@@ -0,0 +1,94 @@
+/* Implementation of memory_object_terminate for pager library
+ 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. */
+
+
+/* Called by the kernel when a shutdown has finished. */
+/* This is a dual of seqnos_memory_object_init. */
+kern_return_t
+seqnos_memory_object_terminate (mach_port_t object,
+ mach_port_seqno_t seqno,
+ mach_port_t control,
+ mach_port_t name)
+{
+ struct pager *p;
+ struct lock_request *lr;
+ int wakeup;
+
+ if (!(p = check_port_type (object, pager_port_type)))
+ return EOPNOTSUPP;
+
+ if (control != p->memobjcntl)
+ {
+ printf ("incg terminate: wrong control port");
+ goto out;
+ }
+ if (name != p->memobjname)
+ {
+ printf ("incg terminate: wrong name port");
+ goto out;
+ }
+
+ if (p->pager_type != FILE_DATA && p->pager_type != SINDIR)
+ {
+ printf ("unexpected m_o_terminate\n");
+ goto out;
+ }
+
+ mutex_lock (&p->interlock);
+
+ _pager_wait_for_seqno (p, seqno);
+
+ while (p->noterm)
+ {
+ p->termwaiting = 1;
+ condition_wait (&p->wakeup, &p->interlock);
+ }
+
+ wakeup = 0;
+ for (lr = p->lock_requests; lr; lr = lr->next)
+ {
+ lr->locks_pending = 0;
+ if (!lr->pending_writes)
+ wakeup = 1;
+ }
+ if (wakeup)
+ condition_broadcast (&p->wakeup);
+
+ mach_port_deallocate (mach_task_self (), control);
+ mach_port_deallocate (mach_task_self (), name);
+
+ /* Free the pagemap */
+ if (p->pagemapsize)
+ {
+ vm_deallocate (mach_task_self (), (u_int)p->pagemap, p->pagemapsize);
+ p->pagemapsize = 0;
+ p->pagemap = 0;
+ }
+
+ p->pager_state = NOTINIT;
+ _pager_release_seqno (p);
+
+ mutex_unlock (&p->interlock);
+
+ if (shutting_down)
+ /* Drop the user reference rather than waiting for the user to do it. */
+ done_with_port (p);
+
+ out:
+ done_with_port (p);
+ return 0;
+}