osfmk/vm/cpm.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * @OSF_COPYRIGHT@
  32  *
  33  */
  34
  35 #ifndef _VM_CPM_H_
  36 #define _VM_CPM_H_
  37
  38 /*
  39  *      File:   vm/cpm.h
  40  *      Author: Alan Langerman
  41  *      Date:   April 1995 and January 1996
  42  *
  43  *      Contiguous physical memory allocator.
  44  */
  45
  46 #include <mach_kdb.h>
  47 #include <mach_counters.h>
  48
  49 #include <mach/mach_types.h>
  50 #include <vm/vm_page.h>
  51 /*
  52  *      Return a linked list of physically contiguous
  53  *      wired pages.  Caller is responsible for disposal
  54  *      via cpm_release.
  55  *
  56  *      These pages are all in "gobbled" state when .
  57  */
  58 extern kern_return_t
  59         cpm_allocate(vm_size_t size, vm_page_t *list, boolean_t wire);
  60
  61 /*
  62  *      CPM-specific event counters.
  63  */
  64 #define VM_CPM_COUNTERS         (MACH_KDB && MACH_COUNTERS && VM_CPM)
  65 #if     VM_CPM_COUNTERS
  66 #define cpm_counter(foo)        foo
  67 #else   /* VM_CPM_COUNTERS */
  68 #define cpm_counter(foo)
  69 #endif  /* VM_CPM_COUNTERS */
  70
  71 #endif  /* _VM_CPM_H_ */