<sys/param.h>
Change-Id: I53d0ca207789f27e3a01acdd184ade24630d9a00
This commit is contained in:
Ben Gras
Lionel Sambuc
parent
9c031c9d7f
commit
1ef83ee923
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@ -575,7 +575,7 @@ rresvport_af_addr(int *alport, int family, void *addr)
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s = socket(family, SOCK_STREAM, 0);
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if (s < 0)
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return -1;
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#ifdef BSD4_4
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#if defined(BSD4_4) && !defined(__minix)
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switch (family) {
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case AF_INET:
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case AF_INET6:
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234
sys/sys/param.h
234
sys/sys/param.h
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@ -44,9 +44,7 @@
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*/
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#define BSD 199506 /* System version (year & month). */
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#define BSD4_3 1
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#ifndef __minix
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#define BSD4_4 1
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#endif
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/*
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* #define __NetBSD_Version__ MMmmrrpp00
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@ -116,9 +114,7 @@
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#define MAXINTERP PATH_MAX /* max interpreter file name length */
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/* DEPRECATED: use LOGIN_NAME_MAX instead. */
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#define MAXLOGNAME (LOGIN_NAME_MAX - 1) /* max login name length */
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#ifndef __minix
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#define NCARGS ARG_MAX /* max bytes for an exec function */
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#endif
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#define NGROUPS NGROUPS_MAX /* max number groups */
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#define NOGROUP 65535 /* marker for empty group set member */
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#define MAXHOSTNAMELEN 256 /* max hostname size */
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@ -134,6 +130,34 @@
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#endif /* (MAXUPRC - 0) < CHILD_MAX */
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#endif /* !defined(MAXUPRC) */
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/* More types and definitions used throughout the kernel. */
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#ifdef _KERNEL
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#include <sys/cdefs.h>
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#include <sys/errno.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <sys/ucred.h>
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#include <sys/uio.h>
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#include <uvm/uvm_param.h>
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#ifndef NPROC
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#define NPROC (20 + 16 * MAXUSERS)
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#endif
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#ifndef NTEXT
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#define NTEXT (80 + NPROC / 8) /* actually the object cache */
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#endif
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#ifndef NVNODE
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#define NVNODE (NPROC + NTEXT + 100)
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#define NVNODE_IMPLICIT
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#endif
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#ifndef VNODE_VA_MAXPCT
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#define VNODE_VA_MAXPCT 20
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#endif
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#ifndef BUFCACHE_VA_MAXPCT
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#define BUFCACHE_VA_MAXPCT 20
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#endif
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#define VNODE_COST 2048 /* assumed space in bytes */
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#endif /* _KERNEL */
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/* Signals. */
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#include <sys/signal.h>
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@ -166,6 +190,44 @@
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#define MAX_LWP_PER_PROC 8000
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#endif
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/*
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* Stack macros. On most architectures, the stack grows down,
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* towards lower addresses; it is the rare architecture where
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* it grows up, towards higher addresses.
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*
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* STACK_GROW and STACK_SHRINK adjust a stack pointer by some
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* size, no questions asked. STACK_ALIGN aligns a stack pointer.
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*
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* STACK_ALLOC returns a pointer to allocated stack space of
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* some size; given such a pointer and a size, STACK_MAX gives
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* the maximum (in the "maxsaddr" sense) stack address of the
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* allocated memory.
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*/
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#if defined(_KERNEL) || defined(__EXPOSE_STACK)
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#ifndef STACK_ALIGNBYTES
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#define STACK_ALIGNBYTES __ALIGNBYTES
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#endif
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#ifdef __MACHINE_STACK_GROWS_UP
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#define STACK_GROW(sp, _size) (((char *)(void *)(sp)) + (_size))
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#define STACK_SHRINK(sp, _size) (((char *)(void *)(sp)) - (_size))
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#define STACK_ALIGN(sp, bytes) \
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((char *)((((unsigned long)(sp)) + (bytes)) & ~(bytes)))
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#define STACK_ALLOC(sp, _size) ((char *)(void *)(sp))
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#define STACK_MAX(p, _size) (((char *)(void *)(p)) + (_size))
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#else
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#define STACK_GROW(sp, _size) (((char *)(void *)(sp)) - (_size))
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#define STACK_SHRINK(sp, _size) (((char *)(void *)(sp)) + (_size))
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#define STACK_ALIGN(sp, bytes) \
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((char *)(((unsigned long)(sp)) & ~(bytes)))
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#define STACK_ALLOC(sp, _size) (((char *)(void *)(sp)) - (_size))
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#define STACK_MAX(p, _size) ((char *)(void *)(p))
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#endif
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#define STACK_LEN_ALIGN(len, bytes) (((len) + (bytes)) & ~(bytes))
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#endif /* defined(_KERNEL) || defined(__EXPOSE_STACK) */
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/*
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* Round p (pointer or byte index) up to a correctly-aligned value for all
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* data types (int, long, ...). The result is u_int and must be cast to
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@ -185,6 +247,72 @@
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#define ALIGNED_POINTER(p,t) ((((uintptr_t)(p)) & (sizeof(t) - 1)) == 0)
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#endif
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/*
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* Historic priority levels. These are meaningless and remain only
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* for source compatibility. Do not use in new code.
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*/
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#define PSWP 0
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#define PVM 4
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#define PINOD 8
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#define PRIBIO 16
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#define PVFS 20
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#define PZERO 22
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#define PSOCK 24
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#define PWAIT 32
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#define PLOCK 36
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#define PPAUSE 40
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#define PUSER 50
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#define MAXPRI 127
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#define PCATCH 0x100 /* OR'd with pri for tsleep to check signals */
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#define PNORELOCK 0x200 /* OR'd with pri for tsleep to not relock */
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/*
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* New priority levels.
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*/
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#define PRI_COUNT 224
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#define PRI_NONE (-1)
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#define PRI_KERNEL_RT 192
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#define NPRI_KERNEL_RT 32
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#define MAXPRI_KERNEL_RT (PRI_KERNEL_RT + NPRI_KERNEL_RT - 1)
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#define PRI_USER_RT 128
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#define NPRI_USER_RT 64
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#define MAXPRI_USER_RT (PRI_USER_RT + NPRI_USER_RT - 1)
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#define PRI_KTHREAD 96
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#define NPRI_KTHREAD 32
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#define MAXPRI_KTHREAD (PRI_KTHREAD + NPRI_KTHREAD - 1)
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#define PRI_KERNEL 64
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#define NPRI_KERNEL 32
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#define MAXPRI_KERNEL (PRI_KERNEL + NPRI_KERNEL - 1)
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#define PRI_USER 0
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#define NPRI_USER 64
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#define MAXPRI_USER (PRI_USER + NPRI_USER - 1)
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/* Priority range used by POSIX real-time features */
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#define SCHED_PRI_MIN 0
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#define SCHED_PRI_MAX 63
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/*
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* Kernel thread priorities.
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*/
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#define PRI_SOFTSERIAL MAXPRI_KERNEL_RT
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#define PRI_SOFTNET (MAXPRI_KERNEL_RT - schedppq * 1)
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#define PRI_SOFTBIO (MAXPRI_KERNEL_RT - schedppq * 2)
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#define PRI_SOFTCLOCK (MAXPRI_KERNEL_RT - schedppq * 3)
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#define PRI_XCALL MAXPRI_KTHREAD
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#define PRI_PGDAEMON (MAXPRI_KTHREAD - schedppq * 1)
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#define PRI_VM (MAXPRI_KTHREAD - schedppq * 2)
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#define PRI_IOFLUSH (MAXPRI_KTHREAD - schedppq * 3)
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#define PRI_BIO (MAXPRI_KTHREAD - schedppq * 4)
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#define PRI_IDLE PRI_USER
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/*
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* Miscellaneous.
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*/
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@ -193,12 +321,6 @@
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#define CMASK 022 /* default file mask: S_IWGRP|S_IWOTH */
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#define NODEV (dev_t)(-1) /* non-existent device */
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#define CBLOCK 64 /* Clist block size, must be a power of 2. */
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#define CBQSIZE (CBLOCK/NBBY) /* Quote bytes/cblock - can do better. */
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/* Data chars/clist. */
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#define CBSIZE (CBLOCK - (int)sizeof(struct cblock *) - CBQSIZE)
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#define CROUND (CBLOCK - 1) /* Clist rounding. */
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/*
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* File system parameters and macros.
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*
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@ -255,6 +377,98 @@
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#define MIN(a,b) ((/*CONSTCOND*/(a)<(b))?(a):(b))
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#define MAX(a,b) ((/*CONSTCOND*/(a)>(b))?(a):(b))
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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: NBPG <= MAXALLOCSAVE <= 2 ** (MINBUCKET + 14), and
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* MAXALLOCSAVE must be a power of two.
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*/
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#ifdef _LP64
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#define MINBUCKET 5 /* 5 => min allocation of 32 bytes */
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#else
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#define MINBUCKET 4 /* 4 => min allocation of 16 bytes */
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#endif
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#define MAXALLOCSAVE (2 * NBPG)
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/*
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* Scale factor for scaled integers used to count %cpu time and load avgs.
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*
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* The number of CPU `tick's that map to a unique `%age' can be expressed
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* by the formula (1 / (2 ^ (FSHIFT - 11))). The maximum load average that
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* can be calculated (assuming 32 bits) can be closely approximated using
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* the formula (2 ^ (2 * (16 - FSHIFT))) for (FSHIFT < 15).
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*
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* For the scheduler to maintain a 1:1 mapping of CPU `tick' to `%age',
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* FSHIFT must be at least 11; this gives us a maximum load avg of ~1024.
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*/
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#define FSHIFT 11 /* bits to right of fixed binary point */
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#define FSCALE (1<<FSHIFT)
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/*
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* The time for a process to be blocked before being very swappable.
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* This is a number of seconds which the system takes as being a non-trivial
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* amount of real time. You probably shouldn't change this;
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* it is used in subtle ways (fractions and multiples of it are, that is, like
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* half of a ``long time'', almost a long time, etc.)
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* It is related to human patience and other factors which don't really
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* change over time.
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*/
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#define MAXSLP 20
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/*
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* Defaults for Unified Buffer Cache parameters.
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* These may be overridden in <machine/param.h>.
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*/
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#ifndef UBC_WINSHIFT
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#define UBC_WINSHIFT 13
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#endif
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#ifndef UBC_NWINS
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#define UBC_NWINS 1024
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#endif
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#ifdef _KERNEL
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/*
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* macro to convert from milliseconds to hz without integer overflow
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* Default version using only 32bits arithmetics.
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* 64bit port can define 64bit version in their <machine/param.h>
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* 0x20000 is safe for hz < 20000
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*/
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#ifndef mstohz
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#define mstohz(ms) \
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(__predict_false((ms) >= 0x20000) ? \
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((ms +0u) / 1000u) * hz : \
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((ms +0u) * hz) / 1000u)
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#endif
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#ifndef hztoms
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#define hztoms(t) \
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(__predict_false((t) >= 0x20000) ? \
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((t +0u) / hz) * 1000u : \
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((t +0u) * 1000u) / hz)
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#endif
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extern const int schedppq;
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extern size_t coherency_unit;
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#endif /* _KERNEL */
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/*
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* Minimum alignment of "struct lwp" needed by the architecture.
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* This counts when packing a lock byte into a word alongside a
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* pointer to an LWP.
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*/
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#ifndef MIN_LWP_ALIGNMENT
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#define MIN_LWP_ALIGNMENT 32
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#endif
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#endif /* !__ASSEMBLER__ */
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#endif /* !_SYS_PARAM_H_ */
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