/*
* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
- *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */
/*-
* @(#)param.h 8.3 (Berkeley) 4/4/95
*/
-#ifndef _SYS_PARAM_H_
+#ifndef _SYS_PARAM_H_
#define _SYS_PARAM_H_
-#define BSD 199506 /* System version (year & month). */
-#define BSD4_3 1
-#define BSD4_4 1
+#define BSD 199506 /* System version (year & month). */
+#define BSD4_3 1
+#define BSD4_4 1
-#define NeXTBSD 1995064 /* NeXTBSD version (year, month, release) */
-#define NeXTBSD4_0 0 /* NeXTBSD 4.0 */
+#define NeXTBSD 1995064 /* NeXTBSD version (year, month, release) */
+#define NeXTBSD4_0 0 /* NeXTBSD 4.0 */
-#ifndef NULL
-#define NULL 0
-#endif
+#include <sys/_types.h>
+#include <sys/_types/_null.h>
#ifndef LOCORE
#include <sys/types.h>
*/
#include <sys/syslimits.h>
-#define MAXCOMLEN 16 /* max command name remembered */
-#define MAXINTERP 64 /* max interpreter file name length */
-#define MAXLOGNAME 255 /* max login name length */
-#define MAXUPRC CHILD_MAX /* max simultaneous processes */
-#define NCARGS ARG_MAX /* max bytes for an exec function */
-#define NGROUPS NGROUPS_MAX /* max number groups */
-#define NOFILE 256 /* default max open files per process */
-#define NOGROUP 65535 /* marker for empty group set member */
-#define MAXHOSTNAMELEN 256 /* max hostname size */
-#define MAXDOMNAMELEN 256 /* maximum domain name length */
+#define MAXCOMLEN 16 /* max command name remembered */
+#define MAXINTERP 64 /* max interpreter file name length */
+#define MAXLOGNAME 255 /* max login name length */
+#define MAXUPRC CHILD_MAX /* max simultaneous processes */
+#define NCARGS ARG_MAX /* max bytes for an exec function */
+#define NGROUPS NGROUPS_MAX /* max number groups */
+#define NOFILE 256 /* default max open files per process */
+#define NOGROUP 65535 /* marker for empty group set member */
+#define MAXHOSTNAMELEN 256 /* max hostname size */
+#define MAXDOMNAMELEN 256 /* maximum domain name length */
/* Machine type dependent parameters. */
#include <machine/param.h>
* Priorities. Note that with 32 run queues, differences less than 4 are
* insignificant.
*/
-#define PSWP 0
-#define PVM 4
-#define PINOD 8
-#define PRIBIO 16
-#define PVFS 20
-#define PZERO 22 /* No longer magic, shouldn't be here. XXX */
-#define PSOCK 24
-#define PWAIT 32
-#define PLOCK 36
-#define PPAUSE 40
-#define PUSER 50
-#define MAXPRI 127 /* Priorities range from 0 through MAXPRI. */
-
-#define PRIMASK 0x0ff
-#define PCATCH 0x100 /* OR'd with pri for tsleep to check signals */
-#define PTTYBLOCK 0x200 /* for tty SIGTTOU and SIGTTIN blocking */
+#define PSWP 0
+#define PVM 4
+#define PINOD 8
+#define PRIBIO 16
+#define PVFS 20
+#define PZERO 22 /* No longer magic, shouldn't be here. XXX */
+#define PSOCK 24
+#define PWAIT 32
+#define PLOCK 36
+#define PPAUSE 40
+#define PUSER 50
+#define MAXPRI 127 /* Priorities range from 0 through MAXPRI. */
-#define NZERO 0 /* default "nice" */
+#define PRIMASK 0x0ff
+#define PCATCH 0x100 /* OR'd with pri for tsleep to check signals */
+#define PTTYBLOCK 0x200 /* for tty SIGTTOU and SIGTTIN blocking */
+#define PDROP 0x400 /* OR'd with pri to stop re-aquistion of mutex upon wakeup */
+#define PSPIN 0x800 /* OR'd with pri to require mutex in spin mode upon wakeup */
-#define NBPW sizeof(int) /* number of bytes per word (integer) */
+#define NBPW sizeof(int) /* number of bytes per word (integer) */
-#define CMASK 022 /* default file mask: S_IWGRP|S_IWOTH */
-#define NODEV (dev_t)(-1) /* non-existent device */
+#define CMASK 022 /* default file mask: S_IWGRP|S_IWOTH */
+#define NODEV (dev_t)(-1) /* non-existent device */
/*
* Clustering of hardware pages on machines with ridiculously small
* page sizes is done here. The paging subsystem deals with units of
* CLSIZE pte's describing NBPG (from machine/param.h) pages each.
*/
-#define CLBYTES (CLSIZE*NBPG)
-#define CLOFSET (CLSIZE*NBPG-1) /* for clusters, like PGOFSET */
-#define claligned(x) ((((int)(x))&CLOFSET)==0)
-#define CLOFF CLOFSET
-#define CLSHIFT (PGSHIFT+CLSIZELOG2)
+#define CLBYTES (CLSIZE*NBPG)
+#define CLOFSET (CLSIZE*NBPG-1) /* for clusters, like PGOFSET */
+#define claligned(x) ((((int)(x))&CLOFSET)==0)
+#define CLOFF CLOFSET
+#define CLSHIFT (PGSHIFT+CLSIZELOG2)
-#if CLSIZE==1
-#define clbase(i) (i)
-#define clrnd(i) (i)
+#if CLSIZE == 1
+#define clbase(i) (i)
+#define clrnd(i) (i)
#else
/* Give the base virtual address (first of CLSIZE). */
-#define clbase(i) ((i) &~ (CLSIZE-1))
+#define clbase(i) ((i) &~ (CLSIZE-1))
/* Round a number of clicks up to a whole cluster. */
-#define clrnd(i) (((i) + (CLSIZE-1)) &~ (CLSIZE-1))
+#define clrnd(i) (((i) + (CLSIZE-1)) &~ (CLSIZE-1))
#endif
-#define CBLOCK 64 /* Clist block size, must be a power of 2. */
-#define CBQSIZE (CBLOCK/NBBY) /* Quote bytes/cblock - can do better. */
- /* Data chars/clist. */
-#define CBSIZE (CBLOCK - sizeof(struct cblock *) - CBQSIZE)
-#define CROUND (CBLOCK - 1) /* Clist rounding. */
+#define CBLOCK 64 /* Clist block size, must be a power of 2. */
+#define CBQSIZE (CBLOCK/NBBY) /* Quote bytes/cblock - can do better. */
+ /* Data chars/clist. */
+#define CBSIZE (CBLOCK - sizeof(struct cblock *) - CBQSIZE)
+#define CROUND (CBLOCK - 1) /* Clist rounding. */
/*
* File system parameters and macros.
*
- * The file system is made out of blocks of at most MAXBSIZE units, with
+ * The file system is made out of blocks of at most MAXPHYS units, with
* smaller units (fragments) only in the last direct block. MAXBSIZE
* primarily determines the size of buffers in the buffer pool. It may be
- * made larger without any effect on existing file systems; however making
- * it smaller make make some file systems unmountable.
+ * made larger than MAXPHYS without any effect on existing file systems;
+ * however making it smaller may make some file systems unmountable.
+ * We set this to track the value of MAX_UPL_TRANSFER_BYTES from
+ * osfmk/mach/memory_object_types.h to bound it at the maximum UPL size.
*/
-#define MAXBSIZE MAXPHYS
-#define MAXPHYSIO MAXPHYS
-#define MAXFRAG 8
+#define MAXBSIZE (256 * 4096)
+#define MAXPHYSIO MAXPHYS
+#define MAXFRAG 8
+
+#define MAXPHYSIO_WIRED (16 * 1024 * 1024)
/*
* MAXPATHLEN defines the longest permissable path length after expanding
* It should be set high enough to allow all legitimate uses, but halt
* infinite loops reasonably quickly.
*/
-#define MAXPATHLEN PATH_MAX
-#define MAXSYMLINKS 32
+#define MAXPATHLEN PATH_MAX
+#define MAXSYMLINKS 32
/* Bit map related macros. */
-#define setbit(a,i) (((char *)(a))[(i)/NBBY] |= 1<<((i)%NBBY))
-#define clrbit(a,i) (((char *)(a))[(i)/NBBY] &= ~(1<<((i)%NBBY)))
-#define isset(a,i) (((char *)(a))[(i)/NBBY] & (1<<((i)%NBBY)))
-#define isclr(a,i) ((((char *)(a))[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
+#define setbit(a, i) (((char *)(a))[(i)/NBBY] |= 1<<((i)%NBBY))
+#define clrbit(a, i) (((char *)(a))[(i)/NBBY] &= ~(1<<((i)%NBBY)))
+#define isset(a, i) (((char *)(a))[(i)/NBBY] & (1<<((i)%NBBY)))
+#define isclr(a, i) ((((char *)(a))[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
/* Macros for counting and rounding. */
#ifndef howmany
-#define howmany(x, y) (((x)+((y)-1))/(y))
+#define howmany(x, y) ((((x) % (y)) == 0) ? ((x) / (y)) : (((x) / (y)) + 1))
#endif
-#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
-#define powerof2(x) ((((x)-1)&(x))==0)
+#define roundup(x, y) ((((x) % (y)) == 0) ? \
+ (x) : ((x) + ((y) - ((x) % (y)))))
+#define powerof2(x) ((((x)-1)&(x))==0)
/* Macros for min/max. */
#ifndef MIN
-#define MIN(a,b) (((a)<(b))?(a):(b))
+#define MIN(a, b) (((a)<(b))?(a):(b))
#endif /* MIN */
#ifndef MAX
-#define MAX(a,b) (((a)>(b))?(a):(b))
-#endif /* MAX */
+#define MAX(a, b) (((a)>(b))?(a):(b))
+#endif /* MAX */
/*
* Constants for setting the parameters of the kernel memory allocator.
* Constraints: CLBYTES <= MAXALLOCSAVE <= 2 ** (MINBUCKET + 14), and
* MAXALLOCSIZE must be a power of two.
*/
-#define MINBUCKET 4 /* 4 => min allocation of 16 bytes */
-#define MAXALLOCSAVE (2 * CLBYTES)
+#define MINBUCKET 4 /* 4 => min allocation of 16 bytes */
+#define MAXALLOCSAVE (2 * CLBYTES)
/*
* Scale factor for scaled integers used to count %cpu time and load avgs.
* For the scheduler to maintain a 1:1 mapping of CPU `tick' to `%age',
* FSHIFT must be at least 11; this gives us a maximum load avg of ~1024.
*/
-#define FSHIFT 11 /* bits to right of fixed binary point */
-#define FSCALE (1<<FSHIFT)
+#define FSHIFT 11 /* bits to right of fixed binary point */
+#define FSCALE (1<<FSHIFT)
-#endif /* _SYS_PARAM_H_ */
+#endif /* _SYS_PARAM_H_ */
projects / apple / xnu.git / blobdiff