kernel: Remove unused hogticks global from kern_synch.c.
[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.
984263bc 37 */
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38#ifndef _SYS_PROC_H_
39#define _SYS_PROC_H_
40
05220613 41#if !defined(_KERNEL) && !defined(_KERNEL_STRUCTURES)
03d6a592 42
05220613 43#error "Userland must include sys/user.h instead of sys/proc.h"
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44
45#else
05220613 46
8c3a8690 47#include <sys/callout.h> /* For struct callout. */
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48#include <sys/filedesc.h>
49#include <sys/queue.h>
3e291793 50#include <sys/tree.h>
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51#include <sys/rtprio.h> /* For struct rtprio. */
52#include <sys/signal.h>
167e6ecb 53#include <sys/lock.h>
0adbcbd6 54#include <sys/upmap.h>
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55#ifndef _KERNEL
56#include <sys/time.h> /* For structs itimerval, timeval. */
57#endif
58#include <sys/ucred.h>
59#include <sys/event.h> /* For struct klist */
a591f597 60#include <sys/eventvar.h>
0855a2af 61#include <sys/sysent.h> /* For struct sysentvec */
84b592ba 62#include <sys/thread.h>
98a7f915 63#include <sys/varsym.h>
93328593 64#include <sys/resourcevar.h>
ec12abe0 65#ifdef _KERNEL
fc3bc286 66#include <sys/procctl.h>
a2a5ad0d 67#include <sys/globaldata.h>
ec12abe0 68#endif
dcc99b62 69#include <sys/systimer.h>
c4df9635 70#include <sys/iosched.h>
a77ac49d 71#include <sys/usched.h>
3020e3be 72#include <machine/proc.h> /* Machine-dependent proc substruct. */
acf2a718 73#include <machine/atomic.h> /* Machine-dependent proc substruct. */
b1b4e5a6 74#include <sys/signalvar.h>
84b592ba 75
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76struct proc;
77struct pgrp;
78struct session;
79struct lwp;
80
70d3d461 81LIST_HEAD(proclist, proc);
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82LIST_HEAD(pgrplist, pgrp);
83LIST_HEAD(sesslist, session);
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84LIST_HEAD(lwplist, lwp);
85
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86struct lwp_rb_tree;
87RB_HEAD(lwp_rb_tree, lwp);
88RB_PROTOTYPE2(lwp_rb_tree, lwp, u.lwp_rbnode, rb_lwp_compare, lwpid_t);
89
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90/*
91 * One structure allocated per session.
92 */
93struct session {
b22b6ecd 94 LIST_ENTRY(session) s_list; /* Hash chain. */
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95 int s_count; /* Ref cnt; pgrps in session. */
96 struct proc *s_leader; /* Session leader. */
97 struct vnode *s_ttyvp; /* Vnode of controlling terminal. */
98 struct tty *s_ttyp; /* Controlling terminal. */
99 pid_t s_sid; /* Session ID */
100 char s_login[roundup(MAXLOGNAME, sizeof(long))]; /* Setlogin() name. */
101};
102
103/*
104 * One structure allocated per process group.
105 */
106struct pgrp {
b22b6ecd 107 LIST_ENTRY(pgrp) pg_list; /* Hash chain. */
70d3d461 108 struct proclist pg_members; /* Pointer to pgrp members. */
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109 struct session *pg_session; /* Pointer to session. */
110 struct sigiolst pg_sigiolst; /* List of sigio sources. */
111 pid_t pg_id; /* Pgrp id. */
112 int pg_jobc; /* # procs qualifying pgrp for job control */
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113 u_int pg_refs;
114 struct lwkt_token pg_token;
115 struct lock pg_lock;
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116};
117
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118#define PS_NOCLDWAIT 0x0001 /* No zombies if child dies */
119#define PS_NOCLDSTOP 0x0002 /* No SIGCHLD when children stop. */
a0ae03a7 120#define PS_CLDSIGIGN 0x0004 /* The SIGCHLD handler is SIG_IGN. */
984263bc 121
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122/*
123 * pargs, used to hold a copy of the command line, if it had a sane
124 * length
125 */
126struct pargs {
127 u_int ar_ref; /* Reference count */
128 u_int ar_length; /* Length */
129 u_char ar_args[0]; /* Arguments */
130};
131
132/*
133 * Description of a process.
134 *
135 * This structure contains the information needed to manage a thread of
136 * control, known in UN*X as a process; it has references to substructures
137 * containing descriptions of things that the process uses, but may share
138 * with related processes. The process structure and the substructures
139 * are always addressable except for those marked "(PROC ONLY)" below,
140 * which might be addressable only on a processor on which the process
141 * is running.
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142 *
143 * NOTE! The process start time is stored in the thread structure associated
144 * with the process. If the process is a Zombie, then this field will be
145 * inaccessible due to the thread structure being free'd in kern_wait1().
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146 */
147
148struct jail;
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149struct vkernel_proc;
150struct vkernel_lwp;
287ebb09 151struct vmspace_entry;
29f58392 152struct ktrace_node;
79757ed0 153struct sem_undo;
984263bc 154
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155enum lwpstat {
156 LSRUN = 1,
157 LSSTOP = 2,
158 LSSLEEP = 3,
159};
160
161enum procstat {
162 SIDL = 1,
163 SACTIVE = 2,
164 SSTOP = 3,
416d05d7 165 SZOMB = 4,
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166};
167
ef09c3ed 168struct lwp {
ef09c3ed 169 TAILQ_ENTRY(lwp) lwp_procq; /* run/sleep queue. */
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170 union {
171 RB_ENTRY(lwp) lwp_rbnode; /* RB tree node - lwp in proc */
172 LIST_ENTRY(lwp) lwp_reap_entry; /* reaper list */
173 } u;
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174
175 struct proc *lwp_proc; /* Link to our proc. */
287ebb09 176 struct vmspace *lwp_vmspace; /* Inherited from p_vmspace */
39005e16 177 struct vkernel_lwp *lwp_vkernel;/* VKernel support, lwp part */
ef09c3ed 178
4643740a 179 lwpid_t lwp_tid; /* Our thread id */
ef09c3ed 180
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181 u_int lwp_flags; /* LWP_* flags */
182 u_int lwp_mpflags; /* LWP_MP_* flags */
183 enum lwpstat lwp_stat; /* LS* lwp status */
cc1d939b 184 int lwp_lock; /* lwp lock (prevent destruct) count */
ef09c3ed 185
4643740a 186 int lwp_dupfd; /* Sideways return value from fdopen */
ef09c3ed 187
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188 /*
189 * The following two fields are marked XXX since (at least) the
190 * 4.4BSD-Lite2 import. I can only guess the reason: It is ugly.
191 * These fields are used to pass the trap code from trapsignal() to
192 * postsig(), which gets called later from userret().
193 *
194 * The correct "fix" for these XXX is to convert our signal system
195 * to use signal queues, where each signal can carry its own meta
196 * data.
197 */
198 int lwp_sig; /* for core dump/debugger XXX */
199 u_long lwp_code; /* for core dump/debugger XXX */
200
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201 /*
202 * Scheduling.
203 */
204 sysclock_t lwp_cpticks; /* cpu used in sched clock ticks */
205 sysclock_t lwp_cpbase; /* Measurement base */
206 fixpt_t lwp_pctcpu; /* %cpu for this process */
ef09c3ed 207 u_int lwp_slptime; /* Time since last blocked. */
e28d8b15 208 u_int lwp_rebal_ticks; /* Timestamp sched on current cpu */
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209
210 int lwp_traceflag; /* Kernel trace points. */
211
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212 struct rusage lwp_ru; /* stats for this lwp */
213
ef09c3ed 214 union usched_data lwp_usdata; /* User scheduler specific */
ef09c3ed 215
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216#define lwp_startcopy lwp_cpumask
217 cpumask_t lwp_cpumask;
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218 sigset_t lwp_siglist; /* Signals arrived but not delivered. */
219 sigset_t lwp_oldsigmask; /* saved mask from before sigpause */
220 sigset_t lwp_sigmask; /* Current signal mask. */
221 stack_t lwp_sigstk; /* sp & on stack state variable */
222
223 struct rtprio lwp_rtprio; /* Realtime priority. */
224#define lwp_endcopy lwp_md
225
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226 struct mdproc lwp_md; /* Any machine-dependent fields. */
227
228 struct thread *lwp_thread; /* backpointer to proc's thread */
7adb15b6 229 void *lwp_unused01; /* for future fields */
a591f597 230 struct kqueue lwp_kqueue; /* for select/poll */
e5857bf7 231 u_int lwp_kqueue_serial;
e2b148c6 232 struct lwkt_token lwp_token; /* per-lwp token for signal/state */
94f98873 233 struct spinlock lwp_spin; /* spinlock for signal handling */
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234 void *lwp_reserveds1; /* reserved for lwp_saveusp */
235 void *lwp_reserveds2; /* reserved for lwp_saveupc */
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236};
237
984263bc 238struct proc {
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239 LIST_ENTRY(proc) p_list; /* List of all processes. */
240
241 /* substructures: */
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242 struct ucred *p_ucred; /* Process owner's identity. */
243 struct filedesc *p_fd; /* Ptr to open files structure. */
ef09c3ed 244 struct filedesc_to_leader *p_fdtol; /* Ptr to tracking node XXX lwp */
c46d7673 245 struct plimit *p_limit; /* Process limits. */
08f2f1bb 246 struct pstats *p_stats;
f2df0f7c 247 u_int p_mqueue_cnt; /* Count of open mqueues. */
51818c08 248 long p_waitgen; /* wait interlock allows late signal */
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249 struct sigacts *p_sigacts;
250#define p_sigignore p_sigacts->ps_sigignore
251#define p_sigcatch p_sigacts->ps_sigcatch
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252#define p_rlimit p_limit->pl_rlimit
253
4643740a 254 int p_flags; /* P_* flags. */
164b8401 255 enum procstat p_stat; /* S* process status. */
c46d7673 256 char p_pad1[3];
984263bc 257
c46d7673 258 pid_t p_pid; /* Process identifier. */
984263bc 259 LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp. */
c46d7673 260 struct proc *p_pptr; /* Pointer to parent process. */
984263bc 261 LIST_ENTRY(proc) p_sibling; /* List of sibling processes. */
70d3d461 262 struct proclist p_children; /* Pointer to list of children. */
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263 struct callout p_ithandle; /* for scheduling p_realtimer */
264 struct varsymset p_varsymset;
c4df9635 265 struct iosched_data p_iosdata; /* Dynamic I/O scheduling data */
984263bc 266
c46d7673 267 pid_t p_oppid; /* Save parent pid during ptrace. XXX */
984263bc 268
d3313941 269 struct vmspace *p_vmspace; /* Current address space. */
984263bc 270
08f2f1bb 271 unsigned int p_swtime; /* Time swapped in or out */
984263bc 272
c46d7673 273 struct itimerval p_realtimer; /* Alarm timer. */
ef09c3ed 274 struct itimerval p_timer[3]; /* Virtual-time timers. */
984263bc 275
c46d7673 276 int p_traceflag; /* Kernel trace points. */
29f58392 277 struct ktrace_node *p_tracenode; /* Trace to vnode. */
984263bc 278
c46d7673 279 sigset_t p_siglist; /* Signals arrived but not delivered. */
984263bc 280
c46d7673 281 struct vnode *p_textvp; /* Vnode of executable. */
8ba5f7ef 282 struct nchandle p_textnch; /* namecache handle of executable. */
984263bc 283
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284 unsigned int p_stops; /* procfs event bitmask */
285 unsigned int p_stype; /* procfs stop event type */
c46d7673 286 char p_step; /* procfs stop *once* flag */
984263bc 287 unsigned char p_pfsflags; /* procfs flags */
51818c08 288 char p_pad2[2];
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289 struct sigiolst p_sigiolst; /* list of sigio sources */
290 int p_sigparent; /* signal to parent on exit */
c46d7673 291 struct klist p_klist; /* knotes attached to this process */
984263bc 292
ef09c3ed 293 struct timeval p_start; /* start time for a process */
ef09c3ed 294
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295 struct rusage p_ru; /* stats for this proc */
296 struct rusage p_cru; /* sum of stats for reaped children */
8c72e3d5 297 void *p_dsched_priv1;
fde7ac71 298
984263bc 299/* The following fields are all copied upon creation in fork. */
2966ed3e 300#define p_startcopy p_comm
984263bc 301
ef09c3ed 302 char p_comm[MAXCOMLEN+1]; /* typ 16+1 bytes */
51818c08 303 char p_pad3;
c46d7673 304 char p_nice; /* Process "nice" value. */
0d355d3b 305 char p_pad4;
315b8b8b 306 int p_osrel; /* release date for binary ELF note */
984263bc 307
c46d7673 308 struct pgrp *p_pgrp; /* Pointer to process group. */
984263bc 309
c46d7673 310 struct sysentvec *p_sysent; /* System call dispatch information. */
984263bc 311
93328593 312 struct uprof p_prof; /* Profiling arguments. */
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313 struct rtprio p_rtprio; /* Realtime priority. */
314 struct pargs *p_args;
0d355d3b 315 u_short p_xstat; /* Exit status or last stop signal */
8c72e3d5 316
aa166ad1 317 int p_ionice;
8c72e3d5 318 void *p_dsched_priv2;
984263bc 319/* End area that is copied on creation. */
8c72e3d5 320#define p_endcopy p_dsched_priv2
c46d7673 321 u_short p_acflag; /* Accounting flags. */
c46d7673 322
0d355d3b 323 int p_lock; /* Prevent proc destruction */
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324 int p_nthreads; /* Number of threads in this process. */
325 int p_nstopped; /* Number of stopped threads. */
326 int p_lasttid; /* Last tid used. */
3e291793 327 struct lwp_rb_tree p_lwp_tree; /* RB tree of LWPs for this process */
c46d7673 328 void *p_aioinfo; /* ASYNC I/O info */
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329 int p_wakeup; /* thread id XXX lwp */
330 struct proc *p_peers; /* XXX lwp */
331 struct proc *p_leader; /* XXX lwp */
c46d7673 332 void *p_emuldata; /* process-specific emulator state */
c46d7673 333 struct usched *p_usched; /* Userland scheduling control */
39005e16 334 struct vkernel_proc *p_vkernel; /* VKernel support, proc part */
c46d7673 335 int p_numposixlocks; /* number of POSIX locks */
8ba5f7ef 336 void (*p_userret)(void);/* p: return-to-user hook */
ef09c3ed 337
c0b8a06d 338 struct spinlock p_spin; /* Spinlock for LWP access to proc */
5686ec5a 339 struct lwkt_token p_token; /* Token for LWP access to proc */
79757ed0 340 struct sem_undo *p_sem_undo; /* Fast semaphore tracking lookup */
c3ab84cc 341 void *p_drv_priv; /* scp linkage (for syscons) */
a86ce0cd 342 void *p_vmm;
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343 cpulock_t p_vmm_cpulock; /* count cpus in and kickout lock */
344 cpumask_t p_vmm_cpumask; /* cpus entering or in vmm */
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345 struct sys_upmap *p_upmap; /* user RO mappable per-process page */
346 forkid_t p_forkid; /* unique forkid */
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347 struct sysreaper *p_reaper; /* reaper control */
348 void *p_reserveds[3]; /* reserved for future */
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349};
350
08f2f1bb
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351#define lwp_wchan lwp_thread->td_wchan
352#define lwp_wmesg lwp_thread->td_wmesg
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353#define p_session p_pgrp->pg_session
354#define p_pgid p_pgrp->pg_id
355
984263bc 356/* These flags are kept in p_flags. */
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357#define P_ADVLOCK 0x00001 /* Process may hold a POSIX advisory lock */
358#define P_CONTROLT 0x00002 /* Has a controlling terminal */
344ad853 359#define P_SWAPPEDOUT 0x00004 /* Swapped out of memory */
9b655f0e 360#define P_SYSVSEM 0x00008 /* Might have SysV semaphores */
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361#define P_PPWAIT 0x00010 /* Parent is waiting for child to exec/exit */
362#define P_PROFIL 0x00020 /* Has started profiling */
b2a6ad87 363#define P_POSTEXIT 0x00040 /* Prevent procfs from stepping after this pt */
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364#define P_SCMOUSE 0x00080 /* Process is held by syscons ioctl */
365 /* was: Sleep is interruptible */
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366#define P_SUGID 0x00100 /* Had set id privileges since last exec */
367#define P_SYSTEM 0x00200 /* System proc: no sigs, stats or swapping */
51818c08 368#define P_MAYBETHREADED 0x00400 /* might be threaded optimization */
4643740a 369#define P_TRACED 0x00800 /* Debugged process being traced */
344ad853 370#define P_WAITED 0x01000 /* SIGSTOP status was returned by wait3/4 */
e3161323 371#define P_WEXIT 0x02000 /* Working on exiting (master exit) */
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372#define P_EXEC 0x04000 /* Process called exec */
373#define P_CONTINUED 0x08000 /* Proc has continued from a stopped state */
984263bc 374
4643740a 375#define P_UNUSED16 0x00010000
7adb15b6 376#define P_UNUSED17 0x00020000
984263bc 377
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378#define P_SWAPWAIT 0x00040000 /* Waiting for a swapin */
379#define P_UNUSED19 0x00080000 /* was: Now in a zombied state */
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380
381/* Marked a kernel thread */
4643740a 382#define P_UNUSED20 0x00100000 /* was: on a user scheduling run queue */
4f7720f0 383#define P_UNUSED21 0x00200000 /* was: Process is really a kernel thread */
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384#define P_IDLESWAP 0x00400000 /* Swapout was due to idleswap, not load */
385
386#define P_JAILED 0x01000000 /* Process is in jail */
387#define P_SIGVTALRM 0x02000000 /* signal SIGVTALRM pending due to itimer */
388#define P_SIGPROF 0x04000000 /* signal SIGPROF pending due to itimer */
389#define P_INEXEC 0x08000000 /* Process is in execve(). */
390#define P_UNUSED28 0x10000000
7adb15b6 391#define P_UNUSED29 0x20000000
c0b8a06d 392#define P_XCPU 0x40000000 /* SIGXCPU */
984263bc 393
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394#define LWP_ALTSTACK 0x0000001 /* have alternate signal stack */
395#define LWP_OLDMASK 0x0000002 /* need to restore mask before pause */
396#define LWP_SINTR 0x0000008 /* Sleep is interruptible. */
397#define LWP_SELECT 0x0000010 /* Selecting; wakeup/waiting danger. */
398#define LWP_UNUSED20 0x0000020
399#define LWP_UNUSED40 0x0000040
400#define LWP_UNUSED80 0x0000080
401#define LWP_PASSIVE_ACQ 0x0000100 /* Passive acquire cpu (see kern_switch) */
402#define LWP_PAGING 0x0000200 /* Currently in vm_fault */
403
7a313817 404/*
4643740a 405 * LWP_MP_WSTOP: When set the thread will stop prior to return to userland
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406 * and has been counted in the process stop-threads-count, but
407 * may still be running in kernel-land.
408 *
4643740a 409 * LWP_MP_WEXIT: When set the thread has been asked to exit and will not return
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410 * to userland. p_nthreads will not be decremented until the
411 * thread has actually exited.
412 */
4643740a 413#define LWP_MP_ONRUNQ 0x0000001 /* on a user scheduling run queue */
62ae46c9 414#define LWP_MP_WEXIT 0x0000002 /* working on exiting (lwpuserret()) */
4643740a 415#define LWP_MP_WSTOP 0x0000004 /* working on stopping */
e28d8b15 416#define LWP_MP_ULOAD 0x0000008 /* uload accounting for current cpu */
de4d4cb0 417#define LWP_MP_RRFORCE 0x0000010 /* forced resched due to rrcount */
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418#define LWP_MP_VNLRU 0x0000020 /* check excessive vnode allocations (lwpuserret()) */
419
420#define LWP_MP_URETMASK (LWP_MP_WEXIT | LWP_MP_VNLRU)
08f2f1bb 421
3e291793 422#define FIRST_LWP_IN_PROC(p) RB_FIRST(lwp_rb_tree, &(p)->p_lwp_tree)
fde7ac71 423#define FOREACH_LWP_IN_PROC(lp, p) \
3e291793 424 RB_FOREACH(lp, lwp_rb_tree, &(p)->p_lwp_tree)
97c67890
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425#define ONLY_LWP_IN_PROC(p) _only_lwp_in_proc(p, __func__)
426
dee5e116 427#ifdef _KERNEL
97c67890
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428static inline struct lwp *
429_only_lwp_in_proc(struct proc *p, const char *caller)
430{
431 if (p->p_nthreads != 1) {
432 panic("%s: proc %p (pid %d cmd %s) has more than one thread",
433 caller, p, p->p_pid, p->p_comm);
434 }
435 return RB_ROOT(&p->p_lwp_tree);
436}
dee5e116 437#endif
fde7ac71 438
5dfd06ac 439/*
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440 * We use process IDs <= PID_MAX. NO_PID must also fit in a pid_t and
441 * is used to represent "no process group".
5dfd06ac 442 */
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443#define PID_MAX 999999
444#define NO_PID 0x7FFFFFFF
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445
446#define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
447
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448#ifdef _KERNEL
449
450#ifdef MALLOC_DECLARE
451MALLOC_DECLARE(M_SESSION);
fb2a331e 452MALLOC_DECLARE(M_PROC);
f6c36234 453MALLOC_DECLARE(M_LWP);
984263bc 454MALLOC_DECLARE(M_SUBPROC);
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455MALLOC_DECLARE(M_PARGS);
456#endif
457
9eaf083f 458/* for priv_check_cred() */
e4700d00 459#define NULL_CRED_OKAY 0x2
984263bc 460
95db0b6a 461/* Handy macro to determine if p1 can mangle p2 */
984263bc 462
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463#define PRISON_CHECK(cr1, cr2) \
464 ((!(cr1)->cr_prison) || (cr1)->cr_prison == (cr2)->cr_prison)
984263bc 465
984263bc 466/*
8a8d5d85 467 * STOPEVENT
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468 */
469extern void stopevent(struct proc*, unsigned int, unsigned int);
470#define STOPEVENT(p,e,v) \
471 do { \
472 if ((p)->p_stops & (e)) { \
984263bc 473 stopevent(p,e,v); \
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474 } \
475 } while (0)
476
0d355d3b 477/*
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478 * Hold process in memory, don't destruct, used by ktrace, procfs, sigio,
479 * and signaling code (e.g. ksignal()).
480 *
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481 * MPSAFE
482 */
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483#define PHOLD(p) phold((p))
484#define PRELE(p) prele((p))
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485#define PHOLDZOMB(p) pholdzomb((p))
486#define PRELEZOMB(p) prelezomb((p))
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487#define PSTALL(p, msg, n) \
488 do { if ((p)->p_lock > (n)) pstall((p), (msg), (n)); } while (0)
984263bc 489
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490/*
491 * Hold lwp in memory, don't destruct, normally for ptrace/procfs work
492 * atomic ops because they can occur from an IPI.
493 * MPSAFE
494 */
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495#define LWPHOLD(lp) atomic_add_int(&(lp)->lwp_lock, 1)
496#define LWPRELE(lp) atomic_add_int(&(lp)->lwp_lock, -1)
cc1d939b 497
984263bc 498extern struct proc proc0; /* Process slot for swapper. */
08f2f1bb 499extern struct lwp lwp0; /* LWP slot for swapper. */
b7c628e4 500extern struct thread thread0; /* Thread slot for swapper. */
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501extern int nprocs, maxproc; /* Current and max number of procs. */
502extern int maxprocperuid; /* Max procs per uid. */
503extern int sched_quantum; /* Scheduling quantum in ticks */
504
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505extern struct proc *initproc; /* Process slot for init */
506extern struct thread *pagethread, *updatethread;
984263bc 507
984263bc 508/*
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509 * Scheduler independant variables. The primary scheduler polling frequency,
510 * the maximum ESTCPU value, and the weighting factor for nice values. A
511 * cpu bound program's estcpu will increase to ESTCPUMAX - 1.
984263bc 512 */
a46fac56 513#define ESTCPUFREQ 50
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514
515extern u_long ps_arg_cache_limit;
516extern int ps_argsopen;
28c57d20 517extern int ps_showallprocs;
984263bc 518
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519struct proc *pfind (pid_t); /* Find process by id w/ref */
520struct proc *pfindn (pid_t); /* Find process by id wo/ref */
521struct pgrp *pgfind (pid_t); /* Find process group by id w/ref */
522struct proc *zpfind (pid_t); /* Find zombie process by id w/ref */
523void pgref (struct pgrp *); /* Ref pgrp preventing disposal */
524void pgrel (struct pgrp *); /* Deref pgrp & dispose on 1->0 trans */
984263bc 525
a2a5ad0d 526struct globaldata;
91bd9c1e 527struct lwp_params;
984263bc 528
b153f746 529int enterpgrp (struct proc *p, pid_t pgid, int mksess);
51e64ff2 530void proc_add_allproc(struct proc *p);
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531void proc_move_allproc_zombie(struct proc *);
532void proc_remove_zombie(struct proc *);
533void allproc_scan(int (*callback)(struct proc *, void *), void *data);
c7e98b2f 534void alllwp_scan(int (*callback)(struct lwp *, void *), void *data);
5bf0d9b5 535void zombproc_scan(int (*callback)(struct proc *, void *), void *data);
b153f746 536void fixjobc (struct proc *p, struct pgrp *pgrp, int entering);
553ea3c8 537void updatepcpu(struct lwp *, int, int);
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538int inferior (struct proc *p);
539int leavepgrp (struct proc *p);
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540void sess_hold(struct session *sp);
541void sess_rele(struct session *sp);
b153f746 542void procinit (void);
a8d3ab53 543void procinsertinit(struct proc *p);
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544void sessinsertinit(struct session *sess);
545void pgrpinsertinit(struct pgrp *pg);
26a0694b 546void relscurproc(struct proc *curp);
b153f746 547int p_trespass (struct ucred *cr1, struct ucred *cr2);
9a379a4a 548void setrunnable (struct lwp *);
f33e8653 549void proc_stop (struct proc *);
9a379a4a 550void proc_unstop (struct proc *);
fc17ad60 551void sleep_gdinit (struct globaldata *);
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552thread_t cpu_heavy_switch (struct thread *);
553thread_t cpu_lwkt_switch (struct thread *);
b153f746 554
c6880072 555void cpu_lwp_exit (void) __dead2;
b153f746 556void cpu_thread_exit (void) __dead2;
51818c08 557void lwp_exit (int masterexit, void *waddr) __dead2;
c6880072 558void lwp_dispose (struct lwp *);
dc52e1cc 559int killalllwps (int);
b153f746 560void exit1 (int) __dead2;
bb3cd951 561void cpu_fork (struct lwp *, struct lwp *, int);
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562int cpu_prepare_lwp(struct lwp *, struct lwp_params *);
563void cpu_set_fork_handler (struct lwp *, void (*)(void *, struct trapframe *), void *);
0cfcada1 564void cpu_set_thread_handler(struct thread *td, void (*retfunc)(void), void *func, void *arg);
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565int fork1 (struct lwp *, int, struct proc **);
566void start_forked_proc (struct lwp *, struct proc *);
b153f746 567int trace_req (struct proc *);
b153f746 568void cpu_thread_wait (struct thread *);
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569void setsugid (void);
570void faultin (struct proc *p);
344ad853 571void swapin_request (void);
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572void phold (struct proc *);
573void prele (struct proc *);
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574int pholdzomb (struct proc *);
575void prelezomb (struct proc *);
82354ad8 576void pstall (struct proc *, const char *, int);
62ae46c9 577void lwpuserret(struct lwp *);
9072066a 578void lwpkthreaddeferred(void);
87116512 579void proc_usermap(struct proc *p, int invfork);
0adbcbd6 580void proc_userunmap(struct proc *p);
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581void reaper_hold(struct sysreaper *reap);
582void reaper_drop(struct sysreaper *reap);
583struct sysreaper *reaper_exit(struct proc *p);
584void reaper_init(struct proc *p, struct sysreaper *reap);
585struct proc *reaper_get(struct sysreaper *reap);
984263bc 586
b153f746 587u_int32_t procrunnable (void);
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588
589#endif /* _KERNEL */
590
03d6a592 591#endif /* _KERNEL || _KERNEL_STRUCTURES */
984263bc 592#endif /* !_SYS_PROC_H_ */