kernel - Remove dsched
[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,
f5b92db7 166 SCORE = 5,
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167};
168
ef09c3ed 169struct lwp {
ef09c3ed 170 TAILQ_ENTRY(lwp) lwp_procq; /* run/sleep queue. */
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171 union {
172 RB_ENTRY(lwp) lwp_rbnode; /* RB tree node - lwp in proc */
173 LIST_ENTRY(lwp) lwp_reap_entry; /* reaper list */
174 } u;
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175
176 struct proc *lwp_proc; /* Link to our proc. */
287ebb09 177 struct vmspace *lwp_vmspace; /* Inherited from p_vmspace */
39005e16 178 struct vkernel_lwp *lwp_vkernel;/* VKernel support, lwp part */
ef09c3ed 179
4643740a 180 lwpid_t lwp_tid; /* Our thread id */
ef09c3ed 181
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182 u_int lwp_flags; /* LWP_* flags */
183 u_int lwp_mpflags; /* LWP_MP_* flags */
184 enum lwpstat lwp_stat; /* LS* lwp status */
cc1d939b 185 int lwp_lock; /* lwp lock (prevent destruct) count */
ef09c3ed 186
4643740a 187 int lwp_dupfd; /* Sideways return value from fdopen */
ef09c3ed 188
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189 /*
190 * The following two fields are marked XXX since (at least) the
191 * 4.4BSD-Lite2 import. I can only guess the reason: It is ugly.
192 * These fields are used to pass the trap code from trapsignal() to
193 * postsig(), which gets called later from userret().
194 *
195 * The correct "fix" for these XXX is to convert our signal system
196 * to use signal queues, where each signal can carry its own meta
197 * data.
198 */
199 int lwp_sig; /* for core dump/debugger XXX */
200 u_long lwp_code; /* for core dump/debugger XXX */
201
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202 /*
203 * Scheduling.
204 */
205 sysclock_t lwp_cpticks; /* cpu used in sched clock ticks */
206 sysclock_t lwp_cpbase; /* Measurement base */
207 fixpt_t lwp_pctcpu; /* %cpu for this process */
ef09c3ed 208 u_int lwp_slptime; /* Time since last blocked. */
e28d8b15 209 u_int lwp_rebal_ticks; /* Timestamp sched on current cpu */
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210
211 int lwp_traceflag; /* Kernel trace points. */
212
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213 struct rusage lwp_ru; /* stats for this lwp */
214
ef09c3ed 215 union usched_data lwp_usdata; /* User scheduler specific */
ef09c3ed 216
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217#define lwp_startcopy lwp_cpumask
218 cpumask_t lwp_cpumask;
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219 sigset_t lwp_siglist; /* Signals arrived but not delivered. */
220 sigset_t lwp_oldsigmask; /* saved mask from before sigpause */
221 sigset_t lwp_sigmask; /* Current signal mask. */
222 stack_t lwp_sigstk; /* sp & on stack state variable */
223
224 struct rtprio lwp_rtprio; /* Realtime priority. */
225#define lwp_endcopy lwp_md
226
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227 struct mdproc lwp_md; /* Any machine-dependent fields. */
228
229 struct thread *lwp_thread; /* backpointer to proc's thread */
7adb15b6 230 void *lwp_unused01; /* for future fields */
a591f597 231 struct kqueue lwp_kqueue; /* for select/poll */
e5857bf7 232 u_int lwp_kqueue_serial;
e2b148c6 233 struct lwkt_token lwp_token; /* per-lwp token for signal/state */
94f98873 234 struct spinlock lwp_spin; /* spinlock for signal handling */
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235 void *lwp_reserveds1; /* reserved for lwp_saveusp */
236 void *lwp_reserveds2; /* reserved for lwp_saveupc */
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237};
238
984263bc 239struct proc {
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240 LIST_ENTRY(proc) p_list; /* List of all processes. */
241
242 /* substructures: */
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243 struct ucred *p_ucred; /* Process owner's identity. */
244 struct filedesc *p_fd; /* Ptr to open files structure. */
ef09c3ed 245 struct filedesc_to_leader *p_fdtol; /* Ptr to tracking node XXX lwp */
c46d7673 246 struct plimit *p_limit; /* Process limits. */
08f2f1bb 247 struct pstats *p_stats;
f2df0f7c 248 u_int p_mqueue_cnt; /* Count of open mqueues. */
51818c08 249 long p_waitgen; /* wait interlock allows late signal */
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250 struct sigacts *p_sigacts;
251#define p_sigignore p_sigacts->ps_sigignore
252#define p_sigcatch p_sigacts->ps_sigcatch
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253#define p_rlimit p_limit->pl_rlimit
254
4643740a 255 int p_flags; /* P_* flags. */
164b8401 256 enum procstat p_stat; /* S* process status. */
c46d7673 257 char p_pad1[3];
984263bc 258
c46d7673 259 pid_t p_pid; /* Process identifier. */
984263bc 260 LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp. */
c46d7673 261 struct proc *p_pptr; /* Pointer to parent process. */
984263bc 262 LIST_ENTRY(proc) p_sibling; /* List of sibling processes. */
70d3d461 263 struct proclist p_children; /* Pointer to list of children. */
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264 struct callout p_ithandle; /* for scheduling p_realtimer */
265 struct varsymset p_varsymset;
c4df9635 266 struct iosched_data p_iosdata; /* Dynamic I/O scheduling data */
984263bc 267
c46d7673 268 pid_t p_oppid; /* Save parent pid during ptrace. XXX */
984263bc 269
d3313941 270 struct vmspace *p_vmspace; /* Current address space. */
984263bc 271
08f2f1bb 272 unsigned int p_swtime; /* Time swapped in or out */
984263bc 273
c46d7673 274 struct itimerval p_realtimer; /* Alarm timer. */
ef09c3ed 275 struct itimerval p_timer[3]; /* Virtual-time timers. */
984263bc 276
c46d7673 277 int p_traceflag; /* Kernel trace points. */
29f58392 278 struct ktrace_node *p_tracenode; /* Trace to vnode. */
984263bc 279
c46d7673 280 sigset_t p_siglist; /* Signals arrived but not delivered. */
984263bc 281
c46d7673 282 struct vnode *p_textvp; /* Vnode of executable. */
8ba5f7ef 283 struct nchandle p_textnch; /* namecache handle of executable. */
984263bc 284
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285 unsigned int p_stops; /* procfs event bitmask */
286 unsigned int p_stype; /* procfs stop event type */
c46d7673 287 char p_step; /* procfs stop *once* flag */
984263bc 288 unsigned char p_pfsflags; /* procfs flags */
51818c08 289 char p_pad2[2];
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290 struct sigiolst p_sigiolst; /* list of sigio sources */
291 int p_sigparent; /* signal to parent on exit */
c46d7673 292 struct klist p_klist; /* knotes attached to this process */
984263bc 293
ef09c3ed 294 struct timeval p_start; /* start time for a process */
ef09c3ed 295
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296 struct rusage p_ru; /* stats for this proc */
297 struct rusage p_cru; /* sum of stats for reaped children */
3573cf7b 298 void *p_unused01;
fde7ac71 299
984263bc 300/* The following fields are all copied upon creation in fork. */
2966ed3e 301#define p_startcopy p_comm
984263bc 302
ef09c3ed 303 char p_comm[MAXCOMLEN+1]; /* typ 16+1 bytes */
51818c08 304 char p_pad3;
c46d7673 305 char p_nice; /* Process "nice" value. */
0d355d3b 306 char p_pad4;
315b8b8b 307 int p_osrel; /* release date for binary ELF note */
984263bc 308
c46d7673 309 struct pgrp *p_pgrp; /* Pointer to process group. */
984263bc 310
c46d7673 311 struct sysentvec *p_sysent; /* System call dispatch information. */
984263bc 312
93328593 313 struct uprof p_prof; /* Profiling arguments. */
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314 struct rtprio p_rtprio; /* Realtime priority. */
315 struct pargs *p_args;
0d355d3b 316 u_short p_xstat; /* Exit status or last stop signal */
8c72e3d5 317
aa166ad1 318 int p_ionice;
3573cf7b 319 void *p_unused02;
984263bc 320/* End area that is copied on creation. */
3573cf7b 321#define p_endcopy p_unused02
c46d7673 322 u_short p_acflag; /* Accounting flags. */
c46d7673 323
0d355d3b 324 int p_lock; /* Prevent proc destruction */
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325 int p_nthreads; /* Number of threads in this process. */
326 int p_nstopped; /* Number of stopped threads. */
327 int p_lasttid; /* Last tid used. */
3e291793 328 struct lwp_rb_tree p_lwp_tree; /* RB tree of LWPs for this process */
c46d7673 329 void *p_aioinfo; /* ASYNC I/O info */
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330 int p_wakeup; /* thread id XXX lwp */
331 struct proc *p_peers; /* XXX lwp */
332 struct proc *p_leader; /* XXX lwp */
c46d7673 333 void *p_emuldata; /* process-specific emulator state */
c46d7673 334 struct usched *p_usched; /* Userland scheduling control */
39005e16 335 struct vkernel_proc *p_vkernel; /* VKernel support, proc part */
c46d7673 336 int p_numposixlocks; /* number of POSIX locks */
8ba5f7ef 337 void (*p_userret)(void);/* p: return-to-user hook */
ef09c3ed 338
c0b8a06d 339 struct spinlock p_spin; /* Spinlock for LWP access to proc */
5686ec5a 340 struct lwkt_token p_token; /* Token for LWP access to proc */
79757ed0 341 struct sem_undo *p_sem_undo; /* Fast semaphore tracking lookup */
c3ab84cc 342 void *p_drv_priv; /* scp linkage (for syscons) */
a86ce0cd 343 void *p_vmm;
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344 cpulock_t p_vmm_cpulock; /* count cpus in and kickout lock */
345 cpumask_t p_vmm_cpumask; /* cpus entering or in vmm */
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346 struct sys_upmap *p_upmap; /* user RO mappable per-process page */
347 forkid_t p_forkid; /* unique forkid */
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348 struct sysreaper *p_reaper; /* reaper control */
349 void *p_reserveds[3]; /* reserved for future */
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350};
351
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352#define lwp_wchan lwp_thread->td_wchan
353#define lwp_wmesg lwp_thread->td_wmesg
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354#define p_session p_pgrp->pg_session
355#define p_pgid p_pgrp->pg_id
356
984263bc 357/* These flags are kept in p_flags. */
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358#define P_ADVLOCK 0x00001 /* Process may hold a POSIX advisory lock */
359#define P_CONTROLT 0x00002 /* Has a controlling terminal */
344ad853 360#define P_SWAPPEDOUT 0x00004 /* Swapped out of memory */
9b655f0e 361#define P_SYSVSEM 0x00008 /* Might have SysV semaphores */
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362#define P_PPWAIT 0x00010 /* Parent is waiting for child to exec/exit */
363#define P_PROFIL 0x00020 /* Has started profiling */
b2a6ad87 364#define P_POSTEXIT 0x00040 /* Prevent procfs from stepping after this pt */
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365#define P_SCMOUSE 0x00080 /* Process is held by syscons ioctl */
366 /* was: Sleep is interruptible */
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367#define P_SUGID 0x00100 /* Had set id privileges since last exec */
368#define P_SYSTEM 0x00200 /* System proc: no sigs, stats or swapping */
51818c08 369#define P_MAYBETHREADED 0x00400 /* might be threaded optimization */
4643740a 370#define P_TRACED 0x00800 /* Debugged process being traced */
344ad853 371#define P_WAITED 0x01000 /* SIGSTOP status was returned by wait3/4 */
e3161323 372#define P_WEXIT 0x02000 /* Working on exiting (master exit) */
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373#define P_EXEC 0x04000 /* Process called exec */
374#define P_CONTINUED 0x08000 /* Proc has continued from a stopped state */
984263bc 375
4643740a 376#define P_UNUSED16 0x00010000
7adb15b6 377#define P_UNUSED17 0x00020000
984263bc 378
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379#define P_SWAPWAIT 0x00040000 /* Waiting for a swapin */
380#define P_UNUSED19 0x00080000 /* was: Now in a zombied state */
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381
382/* Marked a kernel thread */
4643740a 383#define P_UNUSED20 0x00100000 /* was: on a user scheduling run queue */
4f7720f0 384#define P_UNUSED21 0x00200000 /* was: Process is really a kernel thread */
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385#define P_IDLESWAP 0x00400000 /* Swapout was due to idleswap, not load */
386
387#define P_JAILED 0x01000000 /* Process is in jail */
388#define P_SIGVTALRM 0x02000000 /* signal SIGVTALRM pending due to itimer */
389#define P_SIGPROF 0x04000000 /* signal SIGPROF pending due to itimer */
390#define P_INEXEC 0x08000000 /* Process is in execve(). */
391#define P_UNUSED28 0x10000000
7adb15b6 392#define P_UNUSED29 0x20000000
c0b8a06d 393#define P_XCPU 0x40000000 /* SIGXCPU */
984263bc 394
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395#define LWP_ALTSTACK 0x0000001 /* have alternate signal stack */
396#define LWP_OLDMASK 0x0000002 /* need to restore mask before pause */
397#define LWP_SINTR 0x0000008 /* Sleep is interruptible. */
398#define LWP_SELECT 0x0000010 /* Selecting; wakeup/waiting danger. */
399#define LWP_UNUSED20 0x0000020
400#define LWP_UNUSED40 0x0000040
401#define LWP_UNUSED80 0x0000080
402#define LWP_PASSIVE_ACQ 0x0000100 /* Passive acquire cpu (see kern_switch) */
403#define LWP_PAGING 0x0000200 /* Currently in vm_fault */
404
7a313817 405/*
4643740a 406 * LWP_MP_WSTOP: When set the thread will stop prior to return to userland
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407 * and has been counted in the process stop-threads-count, but
408 * may still be running in kernel-land.
409 *
4643740a 410 * LWP_MP_WEXIT: When set the thread has been asked to exit and will not return
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411 * to userland. p_nthreads will not be decremented until the
412 * thread has actually exited.
413 */
4643740a 414#define LWP_MP_ONRUNQ 0x0000001 /* on a user scheduling run queue */
62ae46c9 415#define LWP_MP_WEXIT 0x0000002 /* working on exiting (lwpuserret()) */
4643740a 416#define LWP_MP_WSTOP 0x0000004 /* working on stopping */
e28d8b15 417#define LWP_MP_ULOAD 0x0000008 /* uload accounting for current cpu */
de4d4cb0 418#define LWP_MP_RRFORCE 0x0000010 /* forced resched due to rrcount */
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419#define LWP_MP_VNLRU 0x0000020 /* check excessive vnode allocations (lwpuserret()) */
420
421#define LWP_MP_URETMASK (LWP_MP_WEXIT | LWP_MP_VNLRU)
08f2f1bb 422
3e291793 423#define FIRST_LWP_IN_PROC(p) RB_FIRST(lwp_rb_tree, &(p)->p_lwp_tree)
fde7ac71 424#define FOREACH_LWP_IN_PROC(lp, p) \
3e291793 425 RB_FOREACH(lp, lwp_rb_tree, &(p)->p_lwp_tree)
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426#define ONLY_LWP_IN_PROC(p) _only_lwp_in_proc(p, __func__)
427
dee5e116 428#ifdef _KERNEL
97c67890
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429static inline struct lwp *
430_only_lwp_in_proc(struct proc *p, const char *caller)
431{
432 if (p->p_nthreads != 1) {
433 panic("%s: proc %p (pid %d cmd %s) has more than one thread",
434 caller, p, p->p_pid, p->p_comm);
435 }
436 return RB_ROOT(&p->p_lwp_tree);
437}
dee5e116 438#endif
fde7ac71 439
5dfd06ac 440/*
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441 * We use process IDs <= PID_MAX. NO_PID must also fit in a pid_t and
442 * is used to represent "no process group".
5dfd06ac 443 */
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444#define PID_MAX 999999
445#define NO_PID 0x7FFFFFFF
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446
447#define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
448
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449#ifdef _KERNEL
450
451#ifdef MALLOC_DECLARE
452MALLOC_DECLARE(M_SESSION);
fb2a331e 453MALLOC_DECLARE(M_PROC);
f6c36234 454MALLOC_DECLARE(M_LWP);
984263bc 455MALLOC_DECLARE(M_SUBPROC);
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456MALLOC_DECLARE(M_PARGS);
457#endif
458
9eaf083f 459/* for priv_check_cred() */
e4700d00 460#define NULL_CRED_OKAY 0x2
984263bc 461
95db0b6a 462/* Handy macro to determine if p1 can mangle p2 */
984263bc 463
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464#define PRISON_CHECK(cr1, cr2) \
465 ((!(cr1)->cr_prison) || (cr1)->cr_prison == (cr2)->cr_prison)
984263bc 466
984263bc 467/*
8a8d5d85 468 * STOPEVENT
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469 */
470extern void stopevent(struct proc*, unsigned int, unsigned int);
471#define STOPEVENT(p,e,v) \
472 do { \
473 if ((p)->p_stops & (e)) { \
984263bc 474 stopevent(p,e,v); \
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475 } \
476 } while (0)
477
0d355d3b 478/*
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479 * Hold process in memory, don't destruct, used by ktrace, procfs, sigio,
480 * and signaling code (e.g. ksignal()).
481 *
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482 * MPSAFE
483 */
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484#define PHOLD(p) phold((p))
485#define PRELE(p) prele((p))
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486#define PHOLDZOMB(p) pholdzomb((p))
487#define PRELEZOMB(p) prelezomb((p))
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488#define PSTALL(p, msg, n) \
489 do { if ((p)->p_lock > (n)) pstall((p), (msg), (n)); } while (0)
984263bc 490
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491/*
492 * Hold lwp in memory, don't destruct, normally for ptrace/procfs work
493 * atomic ops because they can occur from an IPI.
494 * MPSAFE
495 */
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496#define LWPHOLD(lp) atomic_add_int(&(lp)->lwp_lock, 1)
497#define LWPRELE(lp) atomic_add_int(&(lp)->lwp_lock, -1)
cc1d939b 498
984263bc 499extern struct proc proc0; /* Process slot for swapper. */
08f2f1bb 500extern struct lwp lwp0; /* LWP slot for swapper. */
b7c628e4 501extern struct thread thread0; /* Thread slot for swapper. */
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502extern int nprocs, maxproc; /* Current and max number of procs. */
503extern int maxprocperuid; /* Max procs per uid. */
504extern int sched_quantum; /* Scheduling quantum in ticks */
505
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506extern struct proc *initproc; /* Process slot for init */
507extern struct thread *pagethread, *updatethread;
984263bc 508
984263bc 509/*
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510 * Scheduler independant variables. The primary scheduler polling frequency,
511 * the maximum ESTCPU value, and the weighting factor for nice values. A
512 * cpu bound program's estcpu will increase to ESTCPUMAX - 1.
984263bc 513 */
a46fac56 514#define ESTCPUFREQ 50
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515
516extern u_long ps_arg_cache_limit;
517extern int ps_argsopen;
28c57d20 518extern int ps_showallprocs;
984263bc 519
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520struct proc *pfind (pid_t); /* Find process by id w/ref */
521struct proc *pfindn (pid_t); /* Find process by id wo/ref */
522struct pgrp *pgfind (pid_t); /* Find process group by id w/ref */
523struct proc *zpfind (pid_t); /* Find zombie process by id w/ref */
524void pgref (struct pgrp *); /* Ref pgrp preventing disposal */
525void pgrel (struct pgrp *); /* Deref pgrp & dispose on 1->0 trans */
984263bc 526
a2a5ad0d 527struct globaldata;
91bd9c1e 528struct lwp_params;
984263bc 529
b153f746 530int enterpgrp (struct proc *p, pid_t pgid, int mksess);
51e64ff2 531void proc_add_allproc(struct proc *p);
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532void proc_move_allproc_zombie(struct proc *);
533void proc_remove_zombie(struct proc *);
534void allproc_scan(int (*callback)(struct proc *, void *), void *data);
c7e98b2f 535void alllwp_scan(int (*callback)(struct lwp *, void *), void *data);
5bf0d9b5 536void zombproc_scan(int (*callback)(struct proc *, void *), void *data);
b153f746 537void fixjobc (struct proc *p, struct pgrp *pgrp, int entering);
553ea3c8 538void updatepcpu(struct lwp *, int, int);
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539int inferior (struct proc *p);
540int leavepgrp (struct proc *p);
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541void sess_hold(struct session *sp);
542void sess_rele(struct session *sp);
b153f746 543void procinit (void);
a8d3ab53 544void procinsertinit(struct proc *p);
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545void sessinsertinit(struct session *sess);
546void pgrpinsertinit(struct pgrp *pg);
26a0694b 547void relscurproc(struct proc *curp);
b153f746 548int p_trespass (struct ucred *cr1, struct ucred *cr2);
9a379a4a 549void setrunnable (struct lwp *);
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550void proc_stop (struct proc *, int);
551void proc_unstop (struct proc *, int);
fc17ad60 552void sleep_gdinit (struct globaldata *);
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553thread_t cpu_heavy_switch (struct thread *);
554thread_t cpu_lwkt_switch (struct thread *);
b153f746 555
c6880072 556void cpu_lwp_exit (void) __dead2;
b153f746 557void cpu_thread_exit (void) __dead2;
51818c08 558void lwp_exit (int masterexit, void *waddr) __dead2;
c6880072 559void lwp_dispose (struct lwp *);
dc52e1cc 560int killalllwps (int);
b153f746 561void exit1 (int) __dead2;
bb3cd951 562void cpu_fork (struct lwp *, struct lwp *, int);
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563int cpu_prepare_lwp(struct lwp *, struct lwp_params *);
564void cpu_set_fork_handler (struct lwp *, void (*)(void *, struct trapframe *), void *);
0cfcada1 565void cpu_set_thread_handler(struct thread *td, void (*retfunc)(void), void *func, void *arg);
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566int fork1 (struct lwp *, int, struct proc **);
567void start_forked_proc (struct lwp *, struct proc *);
b153f746 568int trace_req (struct proc *);
b153f746 569void cpu_thread_wait (struct thread *);
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570void setsugid (void);
571void faultin (struct proc *p);
344ad853 572void swapin_request (void);
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573void phold (struct proc *);
574void prele (struct proc *);
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575int pholdzomb (struct proc *);
576void prelezomb (struct proc *);
82354ad8 577void pstall (struct proc *, const char *, int);
62ae46c9 578void lwpuserret(struct lwp *);
9072066a 579void lwpkthreaddeferred(void);
87116512 580void proc_usermap(struct proc *p, int invfork);
0adbcbd6 581void proc_userunmap(struct proc *p);
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582void reaper_hold(struct sysreaper *reap);
583void reaper_drop(struct sysreaper *reap);
584struct sysreaper *reaper_exit(struct proc *p);
585void reaper_init(struct proc *p, struct sysreaper *reap);
586struct proc *reaper_get(struct sysreaper *reap);
984263bc 587
b153f746 588u_int32_t procrunnable (void);
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589
590#endif /* _KERNEL */
591
03d6a592 592#endif /* _KERNEL || _KERNEL_STRUCTURES */
984263bc 593#endif /* !_SYS_PROC_H_ */