--- Gnu-Mach/vm/vm_object.h	2020/09/02 04:36:57	1.1.1.1
+++ Gnu-Mach/vm/vm_object.h	2020/09/02 04:50:03	1.1.1.5
@@ -1,25 +1,25 @@
-/* 
+/*
  * Mach Operating System
  * Copyright (c) 1993-1987 Carnegie Mellon University
  * All Rights Reserved.
- * 
+ *
  * Permission to use, copy, modify and distribute this software and its
  * documentation is hereby granted, provided that both the copyright
  * notice and this permission notice appear in all copies of the
  * software, derivative works or modified versions, and any portions
  * thereof, and that both notices appear in supporting documentation.
- * 
+ *
  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- * 
+ *
  * Carnegie Mellon requests users of this software to return to
- * 
+ *
  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  *  School of Computer Science
  *  Carnegie Mellon University
  *  Pittsburgh PA 15213-3890
- * 
+ *
  * any improvements or extensions that they make and grant Carnegie Mellon
  * the rights to redistribute these changes.
  */
@@ -34,9 +34,7 @@
 #ifndef	_VM_VM_OBJECT_H_
 #define _VM_VM_OBJECT_H_
 
-#include <mach_pagemap.h>
-#include <norma_vm.h>
-
+#include <sys/types.h>
 #include <mach/kern_return.h>
 #include <mach/boolean.h>
 #include <mach/memory_object.h>
@@ -46,25 +44,19 @@
 #include <kern/queue.h>
 #include <kern/lock.h>
 #include <kern/assert.h>
-#include <kern/macro_help.h>
+#include <kern/debug.h>
+#include <kern/macros.h>
 #include <vm/pmap.h>
+#include <ipc/ipc_types.h>
 
 #if	MACH_PAGEMAP
 #include <vm/vm_external.h>
 #endif	/* MACH_PAGEMAP */
 
-#if	NORMA_VM
-typedef struct xmm_obj *	pager_request_t;
-#else	/* NORMA_VM */
 typedef struct ipc_port *	pager_request_t;
-#endif	/* NORMA_VM */
 #define	PAGER_REQUEST_NULL	((pager_request_t) 0)
 
 /*
- *	Types defined:
- *
- *	vm_object_t		Virtual memory object.
- *
  *	We use "struct ipc_port *" instead of "ipc_port_t"
  *	to avoid include file circularities.
  */
@@ -74,13 +66,13 @@ struct vm_object {
 	decl_simple_lock_data(,	Lock)		/* Synchronization */
 #if	VM_OBJECT_DEBUG
 	thread_t		LockHolder;	/* Thread holding Lock */
-#endif	VM_OBJECT_DEBUG
+#endif	/* VM_OBJECT_DEBUG */
 	vm_size_t		size;		/* Object size (only valid
 						 * if internal)
 						 */
 
-	short			ref_count;	/* Number of references */
-	short			resident_page_count;
+	int			ref_count;	/* Number of references */
+	int			resident_page_count;
 						/* number of resident pages */
 
 	struct vm_object	*copy;		/* Object that should receive
@@ -152,7 +144,7 @@ struct vm_object {
 						 * progress restart search?
 						 */
 	/* boolean_t */		use_old_pageout : 1,
-						/* Use old pageout primitives? 
+						/* Use old pageout primitives?
 						 */
 	/* boolean_t */		use_shared_copy : 1,/* Use shared (i.e.,
 						 * delayed) copy on write */
@@ -168,9 +160,6 @@ struct vm_object {
 #endif	/* MACH_PAGEMAP */
 };
 
-typedef struct vm_object	*vm_object_t;
-#define VM_OBJECT_NULL		((vm_object_t) 0)
-
 extern
 vm_object_t	kernel_object;		/* the single kernel object */
 
@@ -237,17 +226,35 @@ extern void		vm_object_pager_create(
 extern void		vm_object_destroy(
 	struct ipc_port	*pager);
 
-extern void vm_object_page_map(	
-	vm_object_t, 
-        vm_offset_t, 
-        vm_size_t, 
+extern void vm_object_page_map(
+	vm_object_t,
+        vm_offset_t,
+        vm_size_t,
 	vm_offset_t	(*)(void *, vm_offset_t),
 	void *);
 
-extern void		vm_object_print(vm_object_t);
-
 extern vm_object_t	vm_object_request_object(struct ipc_port *);
 
+extern boolean_t vm_object_coalesce(
+   vm_object_t prev_object,
+   vm_object_t next_object,
+   vm_offset_t prev_offset,
+   vm_offset_t next_offset,
+   vm_size_t   prev_size,
+   vm_size_t   next_size);
+
+extern void vm_object_pager_wakeup(ipc_port_t  pager);
+
+void memory_object_release(
+	ipc_port_t	pager,
+	pager_request_t	pager_request,
+	ipc_port_t	pager_name);
+
+void vm_object_deactivate_pages(vm_object_t);
+
+vm_object_t vm_object_copy_delayed(
+	vm_object_t	src_object);
+
 /*
  *	Event waiting handling
  */
@@ -371,4 +378,23 @@ MACRO_END
 #define	vm_object_lock_taken(object)	simple_lock_taken(&(object)->Lock)
 #endif	/* VM_OBJECT_DEBUG */
 
+/*
+ *	Page cache accounting.
+ *
+ *	The number of cached objects and pages can be read
+ *	without holding any lock.
+ */
+
+extern int	vm_object_cached_count;
+
+extern int	vm_object_cached_pages;
+decl_simple_lock_data(extern,vm_object_cached_pages_lock_data)
+
+#define vm_object_cached_pages_update(page_count)			\
+	MACRO_BEGIN							\
+	simple_lock(&vm_object_cached_pages_lock_data);			\
+	vm_object_cached_pages += (page_count);				\
+	simple_unlock(&vm_object_cached_pages_lock_data);		\
+	MACRO_END
+
 #endif	/* _VM_VM_OBJECT_H_ */