osfmk/vm/cpm.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * @OSF_COPYRIGHT@
  30  *
  31  */
  32
  33 #ifndef _VM_CPM_H_
  34 #define _VM_CPM_H_
  35
  36 /*
  37  *      File:   vm/cpm.h
  38  *      Author: Alan Langerman
  39  *      Date:   April 1995 and January 1996
  40  *
  41  *      Contiguous physical memory allocator.
  42  */
  43
  44 #include <mach_kdb.h>
  45 #include <mach_counters.h>
  46
  47 #include <mach/mach_types.h>
  48 #include <vm/vm_page.h>
  49 /*
  50  *      Return a linked list of physically contiguous
  51  *      wired pages.  Caller is responsible for disposal
  52  *      via cpm_release.
  53  *
  54  *      These pages are all in "gobbled" state when .
  55  */
  56 extern kern_return_t
  57         cpm_allocate(vm_size_t size, vm_page_t *list, boolean_t wire);
  58
  59 /*
  60  *      CPM-specific event counters.
  61  */
  62 #define VM_CPM_COUNTERS         (MACH_KDB && MACH_COUNTERS && VM_CPM)
  63 #if     VM_CPM_COUNTERS
  64 #define cpm_counter(foo)        foo
  65 #else   /* VM_CPM_COUNTERS */
  66 #define cpm_counter(foo)
  67 #endif  /* VM_CPM_COUNTERS */
  68
  69 #endif  /* _VM_CPM_H_ */