kernel - Add per-process token, adjust signal code to use it.
[dragonfly.git] / sys / sys / proc.h
CommitLineData
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1/*-
2 * Copyright (c) 1986, 1989, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * @(#)proc.h 8.15 (Berkeley) 5/19/95
39 * $FreeBSD: src/sys/sys/proc.h,v 1.99.2.9 2003/06/06 20:21:32 tegge Exp $
28a93126 40 * $DragonFly: src/sys/sys/proc.h,v 1.121 2008/07/23 17:22:33 dillon Exp $
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41 */
42
43#ifndef _SYS_PROC_H_
44#define _SYS_PROC_H_
45
05220613 46#if !defined(_KERNEL) && !defined(_KERNEL_STRUCTURES)
03d6a592 47
05220613 48#error "Userland must include sys/user.h instead of sys/proc.h"
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49
50#else
05220613 51
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52#include <sys/callout.h> /* For struct callout_handle. */
53#include <sys/filedesc.h>
54#include <sys/queue.h>
3e291793 55#include <sys/tree.h>
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56#include <sys/rtprio.h> /* For struct rtprio. */
57#include <sys/signal.h>
167e6ecb 58#include <sys/lock.h>
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59#ifndef _KERNEL
60#include <sys/time.h> /* For structs itimerval, timeval. */
61#endif
62#include <sys/ucred.h>
63#include <sys/event.h> /* For struct klist */
a591f597 64#include <sys/eventvar.h>
0855a2af 65#include <sys/sysent.h> /* For struct sysentvec */
84b592ba 66#include <sys/thread.h>
98a7f915 67#include <sys/varsym.h>
a722be49 68#include <sys/upcall.h>
93328593 69#include <sys/resourcevar.h>
ec12abe0 70#ifdef _KERNEL
a2a5ad0d 71#include <sys/globaldata.h>
ec12abe0 72#endif
dcc99b62 73#include <sys/systimer.h>
c4df9635 74#include <sys/iosched.h>
a77ac49d 75#include <sys/usched.h>
3020e3be 76#include <machine/proc.h> /* Machine-dependent proc substruct. */
acf2a718 77#include <machine/atomic.h> /* Machine-dependent proc substruct. */
b1b4e5a6 78#include <sys/signalvar.h>
84b592ba 79
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80LIST_HEAD(proclist, proc);
81LIST_HEAD(lwplist, lwp);
82
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83struct lwp_rb_tree;
84RB_HEAD(lwp_rb_tree, lwp);
85RB_PROTOTYPE2(lwp_rb_tree, lwp, u.lwp_rbnode, rb_lwp_compare, lwpid_t);
86
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87/*
88 * One structure allocated per session.
89 */
90struct session {
91 int s_count; /* Ref cnt; pgrps in session. */
92 struct proc *s_leader; /* Session leader. */
93 struct vnode *s_ttyvp; /* Vnode of controlling terminal. */
94 struct tty *s_ttyp; /* Controlling terminal. */
95 pid_t s_sid; /* Session ID */
96 char s_login[roundup(MAXLOGNAME, sizeof(long))]; /* Setlogin() name. */
97};
98
99/*
100 * One structure allocated per process group.
101 */
102struct pgrp {
103 LIST_ENTRY(pgrp) pg_hash; /* Hash chain. */
70d3d461 104 struct proclist pg_members; /* Pointer to pgrp members. */
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105 struct session *pg_session; /* Pointer to session. */
106 struct sigiolst pg_sigiolst; /* List of sigio sources. */
107 pid_t pg_id; /* Pgrp id. */
108 int pg_jobc; /* # procs qualifying pgrp for job control */
167e6ecb 109 struct lock pg_lock; /* Lock during fork */
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110};
111
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112#define PS_NOCLDWAIT 0x0001 /* No zombies if child dies */
113#define PS_NOCLDSTOP 0x0002 /* No SIGCHLD when children stop. */
114
115/*
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116 * pargs, used to hold a copy of the command line, if it had a sane
117 * length
118 */
119struct pargs {
120 u_int ar_ref; /* Reference count */
121 u_int ar_length; /* Length */
122 u_char ar_args[0]; /* Arguments */
123};
124
125/*
126 * Description of a process.
127 *
128 * This structure contains the information needed to manage a thread of
129 * control, known in UN*X as a process; it has references to substructures
130 * containing descriptions of things that the process uses, but may share
131 * with related processes. The process structure and the substructures
132 * are always addressable except for those marked "(PROC ONLY)" below,
133 * which might be addressable only on a processor on which the process
134 * is running.
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135 *
136 * NOTE! The process start time is stored in the thread structure associated
137 * with the process. If the process is a Zombie, then this field will be
138 * inaccessible due to the thread structure being free'd in kern_wait1().
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139 */
140
141struct jail;
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142struct vkernel_proc;
143struct vkernel_lwp;
287ebb09 144struct vmspace_entry;
29f58392 145struct ktrace_node;
984263bc 146
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147enum lwpstat {
148 LSRUN = 1,
149 LSSTOP = 2,
150 LSSLEEP = 3,
151};
152
153enum procstat {
154 SIDL = 1,
155 SACTIVE = 2,
156 SSTOP = 3,
416d05d7 157 SZOMB = 4,
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158};
159
ef09c3ed 160struct lwp {
ef09c3ed 161 TAILQ_ENTRY(lwp) lwp_procq; /* run/sleep queue. */
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162 union {
163 RB_ENTRY(lwp) lwp_rbnode; /* RB tree node - lwp in proc */
164 LIST_ENTRY(lwp) lwp_reap_entry; /* reaper list */
165 } u;
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166
167 struct proc *lwp_proc; /* Link to our proc. */
287ebb09 168 struct vmspace *lwp_vmspace; /* Inherited from p_vmspace */
39005e16 169 struct vkernel_lwp *lwp_vkernel;/* VKernel support, lwp part */
ef09c3ed 170
8aee5efa 171 lwpid_t lwp_tid; /* Our thread id . */
ef09c3ed 172
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173 int lwp_flag; /* LWP_* flags. */
174 enum lwpstat lwp_stat; /* LS* lwp status. */
cc1d939b 175 int lwp_lock; /* lwp lock (prevent destruct) count */
ef09c3ed 176
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177 int lwp_dupfd; /* Sideways return value from fdopen. XXX */
178
179 /*
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180 * The following two fields are marked XXX since (at least) the
181 * 4.4BSD-Lite2 import. I can only guess the reason: It is ugly.
182 * These fields are used to pass the trap code from trapsignal() to
183 * postsig(), which gets called later from userret().
184 *
185 * The correct "fix" for these XXX is to convert our signal system
186 * to use signal queues, where each signal can carry its own meta
187 * data.
188 */
189 int lwp_sig; /* for core dump/debugger XXX */
190 u_long lwp_code; /* for core dump/debugger XXX */
191
192 /*
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193 * Scheduling.
194 */
195 sysclock_t lwp_cpticks; /* cpu used in sched clock ticks */
196 sysclock_t lwp_cpbase; /* Measurement base */
197 fixpt_t lwp_pctcpu; /* %cpu for this process */
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198 u_int lwp_slptime; /* Time since last blocked. */
199
200 int lwp_traceflag; /* Kernel trace points. */
201
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202 struct rusage lwp_ru; /* stats for this lwp */
203
ef09c3ed 204 union usched_data lwp_usdata; /* User scheduler specific */
ef09c3ed 205
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206#define lwp_startcopy lwp_cpumask
207 cpumask_t lwp_cpumask;
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208 sigset_t lwp_siglist; /* Signals arrived but not delivered. */
209 sigset_t lwp_oldsigmask; /* saved mask from before sigpause */
210 sigset_t lwp_sigmask; /* Current signal mask. */
211 stack_t lwp_sigstk; /* sp & on stack state variable */
212
213 struct rtprio lwp_rtprio; /* Realtime priority. */
214#define lwp_endcopy lwp_md
215
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216 struct mdproc lwp_md; /* Any machine-dependent fields. */
217
218 struct thread *lwp_thread; /* backpointer to proc's thread */
219 struct upcall *lwp_upcall; /* REGISTERED USERLAND POINTER! */
a591f597 220 struct kqueue lwp_kqueue; /* for select/poll */
e5857bf7 221 u_int lwp_kqueue_serial;
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222};
223
984263bc 224struct proc {
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225 LIST_ENTRY(proc) p_list; /* List of all processes. */
226
227 /* substructures: */
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228 struct ucred *p_ucred; /* Process owner's identity. */
229 struct filedesc *p_fd; /* Ptr to open files structure. */
ef09c3ed 230 struct filedesc_to_leader *p_fdtol; /* Ptr to tracking node XXX lwp */
c46d7673 231 struct plimit *p_limit; /* Process limits. */
08f2f1bb 232 struct pstats *p_stats;
f2df0f7c 233 u_int p_mqueue_cnt; /* Count of open mqueues. */
c46d7673 234 void *p_pad0;
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235 struct sigacts *p_sigacts;
236#define p_sigignore p_sigacts->ps_sigignore
237#define p_sigcatch p_sigacts->ps_sigcatch
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238#define p_rlimit p_limit->pl_rlimit
239
c46d7673 240 int p_flag; /* P_* flags. */
164b8401 241 enum procstat p_stat; /* S* process status. */
c46d7673 242 char p_pad1[3];
984263bc 243
c46d7673 244 pid_t p_pid; /* Process identifier. */
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245 LIST_ENTRY(proc) p_hash; /* Hash chain. */
246 LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp. */
c46d7673 247 struct proc *p_pptr; /* Pointer to parent process. */
984263bc 248 LIST_ENTRY(proc) p_sibling; /* List of sibling processes. */
70d3d461 249 struct proclist p_children; /* Pointer to list of children. */
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250 struct callout p_ithandle; /* for scheduling p_realtimer */
251 struct varsymset p_varsymset;
c4df9635 252 struct iosched_data p_iosdata; /* Dynamic I/O scheduling data */
984263bc 253
c46d7673 254 pid_t p_oppid; /* Save parent pid during ptrace. XXX */
984263bc 255
d3313941 256 struct vmspace *p_vmspace; /* Current address space. */
984263bc 257
08f2f1bb 258 unsigned int p_swtime; /* Time swapped in or out */
984263bc 259
c46d7673 260 struct itimerval p_realtimer; /* Alarm timer. */
ef09c3ed 261 struct itimerval p_timer[3]; /* Virtual-time timers. */
984263bc 262
c46d7673 263 int p_traceflag; /* Kernel trace points. */
29f58392 264 struct ktrace_node *p_tracenode; /* Trace to vnode. */
984263bc 265
c46d7673 266 sigset_t p_siglist; /* Signals arrived but not delivered. */
984263bc 267
c46d7673 268 struct vnode *p_textvp; /* Vnode of executable. */
8ba5f7ef 269 struct nchandle p_textnch; /* namecache handle of executable. */
984263bc 270
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271 unsigned int p_stops; /* procfs event bitmask */
272 unsigned int p_stype; /* procfs stop event type */
c46d7673 273 char p_step; /* procfs stop *once* flag */
984263bc 274 unsigned char p_pfsflags; /* procfs flags */
352f5709 275 char p_pad2[2]; /* padding for alignment */
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276 struct sigiolst p_sigiolst; /* list of sigio sources */
277 int p_sigparent; /* signal to parent on exit */
c46d7673 278 struct klist p_klist; /* knotes attached to this process */
984263bc 279
ef09c3ed 280 struct timeval p_start; /* start time for a process */
ef09c3ed 281
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282 struct rusage p_ru; /* stats for this proc */
283 struct rusage p_cru; /* sum of stats for reaped children */
8c72e3d5 284 void *p_dsched_priv1;
fde7ac71 285
984263bc 286/* The following fields are all copied upon creation in fork. */
2966ed3e 287#define p_startcopy p_comm
984263bc 288
ef09c3ed 289 char p_comm[MAXCOMLEN+1]; /* typ 16+1 bytes */
0d355d3b 290 char p_pad3; /* Process lock (prevent destruct) count. */
c46d7673 291 char p_nice; /* Process "nice" value. */
0d355d3b 292 char p_pad4;
984263bc 293
c46d7673 294 struct pgrp *p_pgrp; /* Pointer to process group. */
984263bc 295
c46d7673 296 struct sysentvec *p_sysent; /* System call dispatch information. */
984263bc 297
93328593 298 struct uprof p_prof; /* Profiling arguments. */
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299 struct rtprio p_rtprio; /* Realtime priority. */
300 struct pargs *p_args;
0d355d3b 301 u_short p_xstat; /* Exit status or last stop signal */
8c72e3d5 302
aa166ad1 303 int p_ionice;
8c72e3d5 304 void *p_dsched_priv2;
984263bc 305/* End area that is copied on creation. */
8c72e3d5 306#define p_endcopy p_dsched_priv2
c46d7673 307 u_short p_acflag; /* Accounting flags. */
c46d7673 308
0d355d3b 309 int p_lock; /* Prevent proc destruction */
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310 int p_nthreads; /* Number of threads in this process. */
311 int p_nstopped; /* Number of stopped threads. */
312 int p_lasttid; /* Last tid used. */
3e291793 313 struct lwp_rb_tree p_lwp_tree; /* RB tree of LWPs for this process */
c46d7673 314 void *p_aioinfo; /* ASYNC I/O info */
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315 int p_wakeup; /* thread id XXX lwp */
316 struct proc *p_peers; /* XXX lwp */
317 struct proc *p_leader; /* XXX lwp */
c46d7673 318 void *p_emuldata; /* process-specific emulator state */
c46d7673 319 struct usched *p_usched; /* Userland scheduling control */
39005e16 320 struct vkernel_proc *p_vkernel; /* VKernel support, proc part */
c46d7673 321 int p_numposixlocks; /* number of POSIX locks */
8ba5f7ef 322 void (*p_userret)(void);/* p: return-to-user hook */
ef09c3ed 323
c0b8a06d 324 struct spinlock p_spin; /* Spinlock for LWP access to proc */
5686ec5a 325 struct lwkt_token p_token; /* Token for LWP access to proc */
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326};
327
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328#define lwp_wchan lwp_thread->td_wchan
329#define lwp_wmesg lwp_thread->td_wmesg
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330#define p_session p_pgrp->pg_session
331#define p_pgid p_pgrp->pg_id
332
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333/* These flags are kept in p_flags. */
334#define P_ADVLOCK 0x00001 /* Process may hold a POSIX advisory lock. */
335#define P_CONTROLT 0x00002 /* Has a controlling terminal. */
344ad853 336#define P_SWAPPEDOUT 0x00004 /* Swapped out of memory */
9a379a4a 337#define P_UNUSED3 0x00008 /* was: Event pending, break tsleep on sigcont */
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338#define P_PPWAIT 0x00010 /* Parent is waiting for child to exec/exit. */
339#define P_PROFIL 0x00020 /* Has started profiling. */
8067b633 340#define P_UNUSED5 0x00040 /* was: Selecting; wakeup/waiting danger. */
9a379a4a 341#define P_UNUSED4 0x00080 /* was: Sleep is interruptible. */
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342#define P_SUGID 0x00100 /* Had set id privileges since last exec. */
343#define P_SYSTEM 0x00200 /* System proc: no sigs, stats or swapping. */
164b8401 344#define P_UNUSED2 0x00400 /* was: SIGSTOP status */
984263bc 345#define P_TRACED 0x00800 /* Debugged process being traced. */
344ad853 346#define P_WAITED 0x01000 /* SIGSTOP status was returned by wait3/4 */
e3161323 347#define P_WEXIT 0x02000 /* Working on exiting (master exit) */
984263bc 348#define P_EXEC 0x04000 /* Process called exec. */
cc162105 349#define P_CONTINUED 0x08000 /* Proc has continued from a stopped state. */
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350
351/* Should probably be changed into a hold count. */
352/* was P_NOSWAP 0x08000 was: Do not swap upages; p->p_hold */
7c1212ec 353#define P_MAILBOX 0x10000 /* Possible mailbox signal pending */
984263bc 354
a722be49 355#define P_UPCALLPEND 0x20000 /* an upcall is pending */
984263bc 356
344ad853 357#define P_SWAPWAIT 0x40000 /* Waiting for a swapin */
416d05d7 358#define P_UNUSED6 0x80000 /* was: Now in a zombied state */
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359
360/* Marked a kernel thread */
9388413d 361#define P_UNUSED07 0x100000 /* was: on a user scheduling run queue */
984263bc 362#define P_KTHREADP 0x200000 /* Process is really a kernel thread */
344ad853 363#define P_IDLESWAP 0x400000 /* Swapout was due to idleswap, not load */
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364#define P_DEADLKTREAT 0x800000 /* lock aquisition - deadlock treatment */
365
366#define P_JAILED 0x1000000 /* Process is in jail */
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367#define P_UNUSED0 0x2000000 /* need to restore mask before pause */
368#define P_UNUSED1 0x4000000 /* have alternate signal stack */
984263bc 369#define P_INEXEC 0x8000000 /* Process is in execve(). */
d9eea1a5 370#define P_PASSIVE_ACQ 0x10000000 /* Passive acquire cpu (see kern_switch) */
fe8c5e17 371#define P_UPCALLWAIT 0x20000000 /* Wait for upcall or signal */
c0b8a06d 372#define P_XCPU 0x40000000 /* SIGXCPU */
984263bc 373
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374/*
375 * LWP_WSTOP: When set the thread will stop prior to return to userland
376 * and has been counted in the process stop-threads-count, but
377 * may still be running in kernel-land.
378 *
379 * LWP_WEXIT: When set the thread has been asked to exit and will not return
380 * to userland. p_nthreads will not be decremented until the
381 * thread has actually exited.
382 */
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383#define LWP_ALTSTACK 0x0000001 /* have alternate signal stack */
384#define LWP_OLDMASK 0x0000002 /* need to restore mask before pause */
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385#define LWP_BREAKTSLEEP 0x0000004 /* Event pending, break tsleep on sigcont */
386#define LWP_SINTR 0x0000008 /* Sleep is interruptible. */
8067b633 387#define LWP_SELECT 0x0000010 /* Selecting; wakeup/waiting danger. */
9388413d 388#define LWP_ONRUNQ 0x0000020 /* on a user scheduling run queue */
70d3d461 389#define LWP_WEXIT 0x0000040 /* working on exiting */
f33e8653 390#define LWP_WSTOP 0x0000080 /* working on stopping */
08f2f1bb 391
3e291793 392#define FIRST_LWP_IN_PROC(p) RB_FIRST(lwp_rb_tree, &(p)->p_lwp_tree)
fde7ac71 393#define FOREACH_LWP_IN_PROC(lp, p) \
3e291793 394 RB_FOREACH(lp, lwp_rb_tree, &(p)->p_lwp_tree)
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395#define ONLY_LWP_IN_PROC(p) \
396 (p->p_nthreads != 1 && \
397 (panic("%s: proc %p (pid %d cmd %s) has more than one thread", \
398 __func__, p, p->p_pid, p->p_comm), 1), \
3e291793 399 RB_ROOT(&p->p_lwp_tree))
fde7ac71 400
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401/*
402 * We use process IDs <= PID_MAX; PID_MAX + 1 must also fit in a pid_t,
403 * as it is used to represent "no process group".
404 */
405#define PID_MAX 99999
406#define NO_PID 100000
407
408#define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
409
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410#ifdef _KERNEL
411
412#ifdef MALLOC_DECLARE
413MALLOC_DECLARE(M_SESSION);
fb2a331e 414MALLOC_DECLARE(M_PROC);
f6c36234 415MALLOC_DECLARE(M_LWP);
984263bc 416MALLOC_DECLARE(M_SUBPROC);
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417MALLOC_DECLARE(M_PARGS);
418#endif
419
9eaf083f 420/* for priv_check_cred() */
e4700d00 421#define NULL_CRED_OKAY 0x2
984263bc 422
95db0b6a 423/* Handy macro to determine if p1 can mangle p2 */
984263bc 424
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425#define PRISON_CHECK(cr1, cr2) \
426 ((!(cr1)->cr_prison) || (cr1)->cr_prison == (cr2)->cr_prison)
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427
428/*
8a8d5d85 429 * STOPEVENT
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430 */
431extern void stopevent(struct proc*, unsigned int, unsigned int);
432#define STOPEVENT(p,e,v) \
433 do { \
434 if ((p)->p_stops & (e)) { \
984263bc 435 stopevent(p,e,v); \
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436 } \
437 } while (0)
438
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439/*
440 * Hold process in memory, don't destruct , normally for ptrace/procfs work
441 * MPSAFE
442 */
443#define PHOLD(p) atomic_add_int(&(p)->p_lock, 1)
444#define PRELE(p) atomic_add_int(&(p)->p_lock, -1)
984263bc 445
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446/*
447 * Hold lwp in memory, don't destruct, normally for ptrace/procfs work
448 * atomic ops because they can occur from an IPI.
449 * MPSAFE
450 */
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451#define LWPHOLD(lp) atomic_add_int(&(lp)->lwp_lock, 1)
452#define LWPRELE(lp) atomic_add_int(&(lp)->lwp_lock, -1)
cc1d939b 453
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454#define PIDHASH(pid) (&pidhashtbl[(pid) & pidhash])
455extern LIST_HEAD(pidhashhead, proc) *pidhashtbl;
456extern u_long pidhash;
457
458#define PGRPHASH(pgid) (&pgrphashtbl[(pgid) & pgrphash])
459extern LIST_HEAD(pgrphashhead, pgrp) *pgrphashtbl;
460extern u_long pgrphash;
461
8c72e3d5 462#if 0
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463#ifndef SET_CURPROC
464#define SET_CURPROC(p) (curproc = (p))
465#endif
984263bc 466#endif
84b592ba 467
984263bc 468extern struct proc proc0; /* Process slot for swapper. */
08f2f1bb 469extern struct lwp lwp0; /* LWP slot for swapper. */
b7c628e4 470extern struct thread thread0; /* Thread slot for swapper. */
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471extern int hogticks; /* Limit on kernel cpu hogs. */
472extern int nprocs, maxproc; /* Current and max number of procs. */
473extern int maxprocperuid; /* Max procs per uid. */
474extern int sched_quantum; /* Scheduling quantum in ticks */
475
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476extern struct proclist allproc; /* List of all processes. */
477extern struct proclist zombproc; /* List of zombie processes. */
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478extern struct proc *initproc; /* Process slot for init */
479extern struct thread *pagethread, *updatethread;
984263bc 480
984263bc 481/*
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482 * Scheduler independant variables. The primary scheduler polling frequency,
483 * the maximum ESTCPU value, and the weighting factor for nice values. A
484 * cpu bound program's estcpu will increase to ESTCPUMAX - 1.
984263bc 485 */
a46fac56 486#define ESTCPUFREQ 50
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487
488extern u_long ps_arg_cache_limit;
489extern int ps_argsopen;
28c57d20 490extern int ps_showallprocs;
984263bc 491
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492struct proc *pfind (pid_t); /* Find process by id. */
493struct pgrp *pgfind (pid_t); /* Find process group by id. */
494struct proc *zpfind (pid_t); /* Find zombie process by id. */
984263bc 495
a2a5ad0d 496struct globaldata;
91bd9c1e 497struct lwp_params;
984263bc 498
b153f746 499int enterpgrp (struct proc *p, pid_t pgid, int mksess);
51e64ff2 500void proc_add_allproc(struct proc *p);
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501void proc_move_allproc_zombie(struct proc *);
502void proc_remove_zombie(struct proc *);
503void allproc_scan(int (*callback)(struct proc *, void *), void *data);
c7e98b2f 504void alllwp_scan(int (*callback)(struct lwp *, void *), void *data);
5bf0d9b5 505void zombproc_scan(int (*callback)(struct proc *, void *), void *data);
b153f746 506void fixjobc (struct proc *p, struct pgrp *pgrp, int entering);
553ea3c8 507void updatepcpu(struct lwp *, int, int);
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508int inferior (struct proc *p);
509int leavepgrp (struct proc *p);
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510void sess_hold(struct session *sp);
511void sess_rele(struct session *sp);
b153f746 512void procinit (void);
26a0694b 513void relscurproc(struct proc *curp);
b153f746 514int p_trespass (struct ucred *cr1, struct ucred *cr2);
9a379a4a 515void setrunnable (struct lwp *);
f33e8653 516void proc_stop (struct proc *);
9a379a4a 517void proc_unstop (struct proc *);
fc17ad60 518void sleep_gdinit (struct globaldata *);
b153f746 519int suser (struct thread *td);
b153f746 520int suser_cred (struct ucred *cred, int flag);
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521void cpu_heavy_switch (struct thread *);
522void cpu_lwkt_switch (struct thread *);
b153f746 523
c6880072 524void cpu_lwp_exit (void) __dead2;
b153f746 525void cpu_thread_exit (void) __dead2;
e3161323 526void lwp_exit (int masterexit) __dead2;
c6880072 527void lwp_dispose (struct lwp *);
dc52e1cc 528int killalllwps (int);
b153f746 529void exit1 (int) __dead2;
bb3cd951 530void cpu_fork (struct lwp *, struct lwp *, int);
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531int cpu_prepare_lwp(struct lwp *, struct lwp_params *);
532void cpu_set_fork_handler (struct lwp *, void (*)(void *, struct trapframe *), void *);
0cfcada1 533void cpu_set_thread_handler(struct thread *td, void (*retfunc)(void), void *func, void *arg);
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534int fork1 (struct lwp *, int, struct proc **);
535void start_forked_proc (struct lwp *, struct proc *);
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536int trace_req (struct proc *);
537void cpu_proc_wait (struct proc *);
538void cpu_thread_wait (struct thread *);
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539void setsugid (void);
540void faultin (struct proc *p);
344ad853 541void swapin_request (void);
984263bc 542
b153f746 543u_int32_t procrunnable (void);
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544
545#endif /* _KERNEL */
546
03d6a592 547#endif /* _KERNEL || _KERNEL_STRUCTURES */
984263bc 548#endif /* !_SYS_PROC_H_ */