Initial revision

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;
+}