399 lines
13 KiB
C
399 lines
13 KiB
C
/* $OpenBSD: malloc.h,v 1.126 2023/12/19 14:40:04 deraadt Exp $ */
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/* $NetBSD: malloc.h,v 1.39 1998/07/12 19:52:01 augustss Exp $ */
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/*
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* Copyright (c) 1987, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)malloc.h 8.5 (Berkeley) 5/3/95
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*/
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#ifndef _SYS_MALLOC_H_
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#define _SYS_MALLOC_H_
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#include <sys/queue.h>
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#define KERN_MALLOC_BUCKETS 1
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#define KERN_MALLOC_BUCKET 2
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#define KERN_MALLOC_KMEMNAMES 3
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#define KERN_MALLOC_KMEMSTATS 4
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#define KERN_MALLOC_MAXID 5
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#define CTL_KERN_MALLOC_NAMES { \
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{ 0, 0 }, \
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{ "buckets", CTLTYPE_STRING }, \
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{ "bucket", CTLTYPE_NODE }, \
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{ "kmemnames", CTLTYPE_STRING }, \
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{ "kmemstat", CTLTYPE_NODE }, \
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}
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/*
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* flags to malloc
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*/
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#define M_WAITOK 0x0001
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#define M_NOWAIT 0x0002
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#define M_CANFAIL 0x0004
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#define M_ZERO 0x0008
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/*
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* Types of memory to be allocated
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*/
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#define M_FREE 0 /* should be on free list */
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/* 1 - free */
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#define M_DEVBUF 2 /* device driver memory */
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/* 3 - free */
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#define M_PCB 4 /* protocol control blocks */
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#define M_RTABLE 5 /* routing tables */
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#define M_PF 6 /* packet filter structures */
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/* 7 - free */
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/* 8 - free */
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#define M_IFADDR 9 /* interface addresses */
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#define M_IFGROUP 10 /* interface groups */
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#define M_SYSCTL 11 /* sysctl persistent buffers */
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#define M_COUNTERS 12 /* per-CPU counters via counters_alloc(9) */
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/* 13 - free */
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#define M_IOCTLOPS 14 /* ioctl data buffers */
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/* 15-18 - free */
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#define M_IOV 19 /* large IOVs */
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#define M_MOUNT 20 /* VFS mount structs */
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/* 21 - free */
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#define M_NFSREQ 22 /* NFS request headers */
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#define M_NFSMNT 23 /* NFS mount structures */
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#define M_LOG 24 /* messages in kernel log stash */
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#define M_VNODE 25 /* Dynamically allocated vnodes */
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/* 26 - free */
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#define M_DQUOT 27 /* UFS quota entries */
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#define M_UFSMNT 28 /* UFS mount structures */
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#define M_SHM 29 /* SVID compatible shared memory segments */
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#define M_VMMAP 30 /* VM map structures */
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#define M_SEM 31 /* SVID compatible semaphores */
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#define M_DIRHASH 32 /* UFS directory hash structures */
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#define M_ACPI 33 /* ACPI structures */
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#define M_VMPMAP 34 /* VM pmap data */
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/* 35-38 - free */
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#define M_FILEDESC 39 /* open file descriptor tables */
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#define M_SIGIO 40 /* sigio structures */
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#define M_PROC 41 /* proc structures */
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#define M_SUBPROC 42 /* proc sub-structures */
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/* 43-45 - free */
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#define M_MFSNODE 46 /* MFS vnode private part */
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/* 47-48 - free */
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#define M_NETADDR 49 /* export host address structures */
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#define M_NFSSVC 50 /* NFS server structures */
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/* 51 - free */
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#define M_NFSD 52 /* NFS server daemon structures */
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#define M_IPMOPTS 53 /* internet multicast options */
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#define M_IPMADDR 54 /* internet multicast addresses */
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#define M_IFMADDR 55 /* link-level multicast addresses */
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#define M_MRTABLE 56 /* multicast routing tables */
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#define M_ISOFSMNT 57 /* ISOFS mount structures */
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#define M_ISOFSNODE 58 /* ISOFS vnode private part */
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#define M_MSDOSFSMNT 59 /* MSDOS FS mount structures */
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#define M_MSDOSFSFAT 60 /* MSDOS FS FAT tables */
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#define M_MSDOSFSNODE 61 /* MSDOS FS vnode private part */
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#define M_TTYS 62 /* allocated tty structures */
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#define M_EXEC 63 /* argument lists & other mem used by exec */
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#define M_MISCFSMNT 64 /* miscellaneous FS mount structures */
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#define M_FUSEFS 65 /* FUSE FS mount structures */
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/* 66-73 - free */
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#define M_PFKEY 74 /* pfkey data */
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#define M_TDB 75 /* transforms database */
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#define M_XDATA 76 /* IPsec data */
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/* 77 - free */
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#define M_PAGEDEP 78 /* file page dependencies */
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#define M_INODEDEP 79 /* inode dependencies */
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#define M_NEWBLK 80 /* new block allocation */
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/* 81-82 - free */
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#define M_INDIRDEP 83 /* indirect block dependencies */
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/* 84-91 - free */
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#define M_VMSWAP 92 /* VM swap structures */
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/* 93-97 - free */
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#define M_UVMAMAP 98 /* UVM amap and related */
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#define M_UVMAOBJ 99 /* UVM aobj and related */
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#define M_PINSYSCALL 100 /* pinsyscall */
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#define M_USB 101 /* USB general */
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#define M_USBDEV 102 /* USB device driver */
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#define M_USBHC 103 /* USB host controller */
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#define M_WITNESS 104 /* witness(4) memory */
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#define M_MEMDESC 105 /* memory range */
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/* 106-107 - free */
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#define M_CRYPTO_DATA 108 /* crypto(9) data buffers */
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/* 109 - free */
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#define M_CREDENTIALS 110 /* ipsec(4) related credentials */
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/* 111-122 - free */
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/* KAME IPv6 */
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#define M_IP6OPT 123 /* IPv6 options */
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#define M_IP6NDP 124 /* IPv6 Neighbor Discovery structures */
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/* 125-126 - free */
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#define M_TEMP 127 /* miscellaneous temporary data buffers */
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#define M_NTFSMNT 128 /* NTFS mount structures */
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#define M_NTFSNTNODE 129 /* NTFS ntnode information */
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#define M_NTFSFNODE 130 /* NTFS fnode information */
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#define M_NTFSDIR 131 /* NTFS directory buffers */
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#define M_NTFSNTHASH 132 /* NTFS ntnode hash tables */
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#define M_NTFSNTVATTR 133 /* NTFS file attribute information */
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#define M_NTFSRDATA 134 /* NTFS resident data */
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#define M_NTFSDECOMP 135 /* NTFS decompression temporary storage */
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#define M_NTFSRUN 136 /* NTFS vrun storage */
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#define M_KEVENT 137 /* kqueue(2) data structures */
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/* 138 free */
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#define M_SYNCACHE 139 /* SYN cache hash array */
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#define M_UDFMOUNT 140 /* UDF mount structures */
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#define M_UDFFENTRY 141 /* UDF file entries */
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#define M_UDFFID 142 /* UDF file IDs */
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/* 143 free */
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#define M_AGP 144 /* AGP memory */
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#define M_DRM 145 /* Direct Rendering Manager */
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#define M_LAST 146 /* Must be last type + 1 */
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#define INITKMEMNAMES { \
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"free", /* 0 M_FREE */ \
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NULL, \
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"devbuf", /* 2 M_DEVBUF */ \
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NULL, \
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"pcb", /* 4 M_PCB */ \
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"rtable", /* 5 M_RTABLE */ \
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"pf", /* 6 M_PF */ \
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NULL, \
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NULL, \
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"ifaddr", /* 9 M_IFADDR */ \
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"ifgroup", /* 10 M_IFGROUP */ \
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"sysctl", /* 11 M_SYSCTL */ \
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"counters", /* 12 M_COUNTERS */ \
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NULL, \
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"ioctlops", /* 14 M_IOCTLOPS */ \
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NULL, \
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NULL, \
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NULL, \
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NULL, \
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"iov", /* 19 M_IOV */ \
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"mount", /* 20 M_MOUNT */ \
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NULL, \
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"NFS req", /* 22 M_NFSREQ */ \
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"NFS mount", /* 23 M_NFSMNT */ \
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"log", /* 24 M_LOG */ \
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"vnodes", /* 25 M_VNODE */ \
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NULL, \
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"UFS quota", /* 27 M_DQUOT */ \
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"UFS mount", /* 28 M_UFSMNT */ \
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"shm", /* 29 M_SHM */ \
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"VM map", /* 30 M_VMMAP */ \
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"sem", /* 31 M_SEM */ \
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"dirhash", /* 32 M_DIRHASH */ \
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"ACPI", /* 33 M_ACPI */ \
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"VM pmap", /* 34 M_VMPMAP */ \
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NULL, /* 35 */ \
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NULL, /* 36 */ \
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NULL, /* 37 */ \
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NULL, \
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"file desc", /* 39 M_FILEDESC */ \
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"sigio", /* 40 M_SIGIO */ \
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"proc", /* 41 M_PROC */ \
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"subproc", /* 42 M_SUBPROC */ \
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NULL, \
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NULL, \
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NULL, \
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"MFS node", /* 46 M_MFSNODE */ \
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NULL, \
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NULL, \
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"Export Host", /* 49 M_NETADDR */ \
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"NFS srvsock", /* 50 M_NFSSVC */ \
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NULL, \
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"NFS daemon", /* 52 M_NFSD */ \
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"ip_moptions", /* 53 M_IPMOPTS */ \
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"in_multi", /* 54 M_IPMADDR */ \
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"ether_multi", /* 55 M_IFMADDR */ \
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"mrt", /* 56 M_MRTABLE */ \
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"ISOFS mount", /* 57 M_ISOFSMNT */ \
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"ISOFS node", /* 58 M_ISOFSNODE */ \
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"MSDOSFS mount", /* 59 M_MSDOSFSMNT */ \
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"MSDOSFS fat", /* 60 M_MSDOSFSFAT */ \
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"MSDOSFS node", /* 61 M_MSDOSFSNODE */ \
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"ttys", /* 62 M_TTYS */ \
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"exec", /* 63 M_EXEC */ \
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"miscfs mount", /* 64 M_MISCFSMNT */ \
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"fusefs mount", /* 65 M_FUSEFS */ \
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NULL, \
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NULL, \
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NULL, \
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NULL, \
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NULL, \
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NULL, \
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NULL, \
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NULL, \
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"pfkey data", /* 74 M_PFKEY */ \
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"tdb", /* 75 M_TDB */ \
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"xform_data", /* 76 M_XDATA */ \
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NULL, \
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"pagedep", /* 78 M_PAGEDEP */ \
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"inodedep", /* 79 M_INODEDEP */ \
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"newblk", /* 80 M_NEWBLK */ \
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NULL, \
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NULL, \
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"indirdep", /* 83 M_INDIRDEP */ \
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NULL, NULL, NULL, NULL, \
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NULL, NULL, NULL, NULL, \
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"VM swap", /* 92 M_VMSWAP */ \
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NULL, NULL, NULL, NULL, NULL, \
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"UVM amap", /* 98 M_UVMAMAP */ \
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"UVM aobj", /* 99 M_UVMAOBJ */ \
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"pinsyscall", /* 100 M_PINSYSCALL */ \
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"USB", /* 101 M_USB */ \
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"USB device", /* 102 M_USBDEV */ \
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"USB HC", /* 103 M_USBHC */ \
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"witness", /* 104 M_WITNESS */ \
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"memdesc", /* 105 M_MEMDESC */ \
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NULL, /* 106 */ \
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NULL, \
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"crypto data", /* 108 M_CRYPTO_DATA */ \
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NULL, \
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"IPsec creds", /* 110 M_CREDENTIALS */ \
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NULL, NULL, NULL, NULL, \
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NULL, NULL, NULL, NULL, \
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NULL, NULL, NULL, NULL, \
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"ip6_options", /* 123 M_IP6OPT */ \
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"NDP", /* 124 M_IP6NDP */ \
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NULL, \
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NULL, \
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"temp", /* 127 M_TEMP */ \
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"NTFS mount", /* 128 M_NTFSMNT */ \
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"NTFS node", /* 129 M_NTFSNTNODE */ \
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"NTFS fnode", /* 130 M_NTFSFNODE */ \
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"NTFS dir", /* 131 M_NTFSDIR */ \
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"NTFS hash", /* 132 M_NTFSNTHASH */ \
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"NTFS attr", /* 133 M_NTFSNTVATTR */ \
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"NTFS data", /* 134 M_NTFSRDATA */ \
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"NTFS decomp", /* 135 M_NTFSDECOMP */ \
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"NTFS vrun", /* 136 M_NTFSRUN */ \
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"kqueue", /* 137 M_KEVENT */ \
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NULL, /* 138 free */ \
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"SYN cache", /* 139 M_SYNCACHE */ \
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"UDF mount", /* 140 M_UDFMOUNT */ \
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"UDF file entry", /* 141 M_UDFFENTRY */ \
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"UDF file id", /* 142 M_UDFFID */ \
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NULL, /* 143 free */ \
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"AGP Memory", /* 144 M_AGP */ \
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"DRM", /* 145 M_DRM */ \
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}
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struct kmemstats {
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long ks_inuse; /* # of packets of this type currently in use */
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long ks_calls; /* total packets of this type ever allocated */
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long ks_memuse; /* total memory held in bytes */
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u_short ks_limblocks; /* number of times blocked for hitting limit */
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long ks_maxused; /* maximum number ever used */
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long ks_limit; /* most that are allowed to exist */
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long ks_size; /* sizes of this thing that are allocated */
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long ks_spare;
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};
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/*
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* Array of descriptors that describe the contents of each page
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*/
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struct kmemusage {
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short ku_indx; /* bucket index */
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union {
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u_short freecnt;/* for small allocations, free pieces in page */
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u_short pagecnt;/* for large allocations, pages alloced */
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} ku_un;
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};
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#define ku_freecnt ku_un.freecnt
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#define ku_pagecnt ku_un.pagecnt
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struct kmem_freelist;
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/*
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* Set of buckets for each size of memory block that is retained
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*/
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struct kmembuckets {
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XSIMPLEQ_HEAD(, kmem_freelist) kb_freelist; /* list of free blocks */
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u_int64_t kb_calls; /* total calls to allocate this size */
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u_int64_t kb_total; /* total number of blocks allocated */
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u_int64_t kb_totalfree; /* # of free elements in this bucket */
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u_int64_t kb_elmpercl; /* # of elements in this sized allocation */
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u_int64_t kb_highwat; /* high water mark */
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u_int64_t kb_couldfree; /* over high water mark and could free */
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};
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/*
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* Constants for setting the parameters of the kernel memory allocator.
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*
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* 2 ** MINBUCKET is the smallest unit of memory that will be
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* allocated. It must be at least large enough to hold a pointer.
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*
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* Units of memory less or equal to MAXALLOCSAVE will permanently
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* allocate physical memory; requests for these size pieces of
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* memory are quite fast. Allocations greater than MAXALLOCSAVE must
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* always allocate and free physical memory; requests for these
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* size allocations should be done infrequently as they will be slow.
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*
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* Constraints: PAGE_SIZE <= MAXALLOCSAVE <= 2 ** (MINBUCKET + 14), and
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* MAXALLOCSIZE must be a power of two.
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*/
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#define MINBUCKET 4 /* 4 => min allocation of 16 bytes */
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#ifdef _KERNEL
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#define MINALLOCSIZE (1 << MINBUCKET)
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#define MAXALLOCSAVE (2 * PAGE_SIZE)
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/*
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* Turn virtual addresses into kmem map indices
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*/
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#define kmemxtob(alloc) (kmembase + (alloc) * PAGE_SIZE)
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#define btokmemx(addr) (((caddr_t)(addr) - kmembase) / PAGE_SIZE)
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#define btokup(addr) (&kmemusage[((caddr_t)(addr) - kmembase) >> PAGE_SHIFT])
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extern struct kmemstats kmemstats[];
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extern struct kmemusage *kmemusage;
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extern char *kmembase;
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extern struct kmembuckets bucket[];
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void *malloc(size_t, int, int);
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void *mallocarray(size_t, size_t, int, int);
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void free(void *, int, size_t);
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int sysctl_malloc(int *, u_int, void *, size_t *, void *, size_t,
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struct proc *);
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void malloc_printit(int (*)(const char *, ...));
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void poison_mem(void *, size_t);
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int poison_check(void *, size_t, size_t *, uint32_t *);
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uint32_t poison_value(void *);
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#endif /* _KERNEL */
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#endif /* !_SYS_MALLOC_H_ */
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