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.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 #if !defined(_KERNEL) && !defined(_KERNEL_STRUCTURES)
39 #error "Userland must include sys/user.h instead of sys/proc.h"
43 #include <sys/callout.h> /* For struct callout. */
44 #include <sys/filedesc.h>
45 #include <sys/queue.h>
47 #include <sys/rtprio.h> /* For struct rtprio. */
48 #include <sys/signal.h>
50 #include <sys/upmap.h>
52 #include <sys/time.h> /* For structs itimerval, timeval. */
54 #include <sys/ucred.h>
55 #include <sys/event.h> /* For struct klist */
56 #include <sys/eventvar.h>
57 #include <sys/sysent.h> /* For struct sysentvec */
58 #include <sys/thread.h>
59 #include <sys/varsym.h>
60 #include <sys/resourcevar.h>
62 #include <sys/procctl.h>
63 #include <sys/globaldata.h>
65 #include <sys/systimer.h>
66 #include <sys/iosched.h>
67 #include <sys/usched.h>
68 #include <machine/proc.h> /* Machine-dependent proc substruct. */
69 #include <machine/atomic.h> /* Machine-dependent proc substruct. */
70 #include <sys/signalvar.h>
77 LIST_HEAD(proclist
, proc
);
78 LIST_HEAD(pgrplist
, pgrp
);
79 LIST_HEAD(sesslist
, session
);
80 LIST_HEAD(lwplist
, lwp
);
83 RB_HEAD(lwp_rb_tree
, lwp
);
84 RB_PROTOTYPE2(lwp_rb_tree
, lwp
, u
.lwp_rbnode
, rb_lwp_compare
, lwpid_t
);
87 * One structure allocated per session.
90 LIST_ENTRY(session
) s_list
; /* Hash chain. */
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. */
100 * One structure allocated per process group.
103 LIST_ENTRY(pgrp
) pg_list
; /* Hash chain. */
104 struct proclist pg_members
; /* Pointer to pgrp members. */
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 */
110 struct lwkt_token pg_token
;
114 #define PS_NOCLDWAIT 0x0001 /* No zombies if child dies */
115 #define PS_NOCLDSTOP 0x0002 /* No SIGCHLD when children stop. */
116 #define PS_CLDSIGIGN 0x0004 /* The SIGCHLD handler is SIG_IGN. */
119 * pargs, used to hold a copy of the command line, if it had a sane
123 u_int ar_ref
; /* Reference count */
124 u_int ar_length
; /* Length */
125 u_char ar_args
[0]; /* Arguments */
129 * Description of a process.
131 * This structure contains the information needed to manage a thread of
132 * control, known in UN*X as a process; it has references to substructures
133 * containing descriptions of things that the process uses, but may share
134 * with related processes. The process structure and the substructures
135 * are always addressable except for those marked "(PROC ONLY)" below,
136 * which might be addressable only on a processor on which the process
139 * NOTE! The process start time is stored in the thread structure associated
140 * with the process. If the process is a Zombie, then this field will be
141 * inaccessible due to the thread structure being free'd in kern_wait1().
147 struct vmspace_entry
;
166 TAILQ_ENTRY(lwp
) lwp_procq
; /* run/sleep queue. */
168 RB_ENTRY(lwp
) lwp_rbnode
; /* RB tree node - lwp in proc */
169 LIST_ENTRY(lwp
) lwp_reap_entry
; /* reaper list */
172 struct proc
*lwp_proc
; /* Link to our proc. */
173 struct vmspace
*lwp_vmspace
; /* Inherited from p_vmspace */
174 struct vkernel_lwp
*lwp_vkernel
;/* VKernel support, lwp part */
176 lwpid_t lwp_tid
; /* Our thread id */
178 u_int lwp_flags
; /* LWP_* flags */
179 u_int lwp_mpflags
; /* LWP_MP_* flags */
180 enum lwpstat lwp_stat
; /* LS* lwp status */
181 int lwp_lock
; /* lwp lock (prevent destruct) count */
183 int lwp_dupfd
; /* Sideways return value from fdopen */
186 * The following two fields are marked XXX since (at least) the
187 * 4.4BSD-Lite2 import. I can only guess the reason: It is ugly.
188 * These fields are used to pass the trap code from trapsignal() to
189 * postsig(), which gets called later from userret().
191 * The correct "fix" for these XXX is to convert our signal system
192 * to use signal queues, where each signal can carry its own meta
195 int lwp_sig
; /* for core dump/debugger XXX */
196 u_long lwp_code
; /* for core dump/debugger XXX */
201 sysclock_t lwp_cpticks
; /* cpu used in sched clock ticks */
202 sysclock_t lwp_cpbase
; /* Measurement base */
203 fixpt_t lwp_pctcpu
; /* %cpu for this process */
204 u_int lwp_slptime
; /* Time since last blocked. */
205 u_int lwp_rebal_ticks
; /* Timestamp sched on current cpu */
207 int lwp_traceflag
; /* Kernel trace points. */
209 struct rusage lwp_ru
; /* stats for this lwp */
211 union usched_data lwp_usdata
; /* User scheduler specific */
213 #define lwp_startcopy lwp_cpumask
214 cpumask_t lwp_cpumask
;
215 sigset_t lwp_siglist
; /* Signals arrived but not delivered. */
216 sigset_t lwp_oldsigmask
; /* saved mask from before sigpause */
217 sigset_t lwp_sigmask
; /* Current signal mask. */
218 stack_t lwp_sigstk
; /* sp & on stack state variable */
220 struct rtprio lwp_rtprio
; /* Realtime priority. */
221 #define lwp_endcopy lwp_md
223 struct mdproc lwp_md
; /* Any machine-dependent fields. */
225 struct thread
*lwp_thread
; /* backpointer to proc's thread */
226 void *lwp_unused01
; /* for future fields */
227 struct kqueue lwp_kqueue
; /* for select/poll */
228 u_int lwp_kqueue_serial
;
229 struct lwkt_token lwp_token
; /* per-lwp token for signal/state */
230 struct spinlock lwp_spin
; /* spinlock for signal handling */
231 void *lwp_reserveds1
; /* reserved for lwp_saveusp */
232 void *lwp_reserveds2
; /* reserved for lwp_saveupc */
236 LIST_ENTRY(proc
) p_list
; /* List of all processes. */
239 struct ucred
*p_ucred
; /* Process owner's identity. */
240 struct filedesc
*p_fd
; /* Ptr to open files structure. */
241 struct filedesc_to_leader
*p_fdtol
; /* Ptr to tracking node XXX lwp */
242 struct plimit
*p_limit
; /* Process limits. */
243 struct pstats
*p_stats
;
244 u_int p_mqueue_cnt
; /* Count of open mqueues. */
245 long p_waitgen
; /* wait interlock allows late signal */
246 struct sigacts
*p_sigacts
;
247 #define p_sigignore p_sigacts->ps_sigignore
248 #define p_sigcatch p_sigacts->ps_sigcatch
249 #define p_rlimit p_limit->pl_rlimit
251 int p_flags
; /* P_* flags. */
252 enum procstat p_stat
; /* S* process status. */
255 pid_t p_pid
; /* Process identifier. */
256 LIST_ENTRY(proc
) p_pglist
; /* List of processes in pgrp. */
257 struct proc
*p_pptr
; /* Pointer to parent process. */
258 LIST_ENTRY(proc
) p_sibling
; /* List of sibling processes. */
259 struct proclist p_children
; /* Pointer to list of children. */
260 struct callout p_ithandle
; /* for scheduling p_realtimer */
261 struct varsymset p_varsymset
;
262 struct iosched_data p_iosdata
; /* Dynamic I/O scheduling data */
264 pid_t p_oppid
; /* Save parent pid during ptrace. XXX */
266 struct vmspace
*p_vmspace
; /* Current address space. */
268 unsigned int p_swtime
; /* Time swapped in or out */
270 struct itimerval p_realtimer
; /* Alarm timer. */
271 struct itimerval p_timer
[3]; /* Virtual-time timers. */
273 int p_traceflag
; /* Kernel trace points. */
274 struct ktrace_node
*p_tracenode
; /* Trace to vnode. */
276 sigset_t p_siglist
; /* Signals arrived but not delivered. */
278 struct vnode
*p_textvp
; /* Vnode of executable. */
279 struct nchandle p_textnch
; /* namecache handle of executable. */
281 unsigned int p_stops
; /* procfs event bitmask */
282 unsigned int p_stype
; /* procfs stop event type */
283 char p_step
; /* procfs stop *once* flag */
284 unsigned char p_pfsflags
; /* procfs flags */
286 struct sigiolst p_sigiolst
; /* list of sigio sources */
287 int p_sigparent
; /* signal to parent on exit */
288 struct klist p_klist
; /* knotes attached to this process */
290 struct timeval p_start
; /* start time for a process */
292 struct rusage p_ru
; /* stats for this proc */
293 struct rusage p_cru
; /* sum of stats for reaped children */
296 /* The following fields are all copied upon creation in fork. */
297 #define p_startcopy p_comm
299 char p_comm
[MAXCOMLEN
+1]; /* typ 16+1 bytes */
301 char p_nice
; /* Process "nice" value. */
303 int p_osrel
; /* release date for binary ELF note */
305 struct pgrp
*p_pgrp
; /* Pointer to process group. */
307 struct sysentvec
*p_sysent
; /* System call dispatch information. */
309 struct uprof p_prof
; /* Profiling arguments. */
310 struct rtprio p_rtprio
; /* Realtime priority. */
311 struct pargs
*p_args
;
312 u_short p_xstat
; /* Exit status or last stop signal */
316 /* End area that is copied on creation. */
317 #define p_endcopy p_unused02
318 u_short p_acflag
; /* Accounting flags. */
320 int p_lock
; /* Prevent proc destruction */
321 int p_nthreads
; /* Number of threads in this process. */
322 int p_nstopped
; /* Number of stopped threads. */
323 int p_lasttid
; /* Last tid used. */
324 struct lwp_rb_tree p_lwp_tree
; /* RB tree of LWPs for this process */
325 void *p_aioinfo
; /* ASYNC I/O info */
326 int p_wakeup
; /* thread id XXX lwp */
327 struct proc
*p_peers
; /* XXX lwp */
328 struct proc
*p_leader
; /* XXX lwp */
329 void *p_emuldata
; /* process-specific emulator state */
330 struct usched
*p_usched
; /* Userland scheduling control */
331 struct vkernel_proc
*p_vkernel
; /* VKernel support, proc part */
332 int p_numposixlocks
; /* number of POSIX locks */
333 void (*p_userret
)(void);/* p: return-to-user hook */
335 struct spinlock p_spin
; /* Spinlock for LWP access to proc */
336 struct lwkt_token p_token
; /* Token for LWP access to proc */
337 struct sem_undo
*p_sem_undo
; /* Fast semaphore tracking lookup */
338 void *p_drv_priv
; /* scp linkage (for syscons) */
340 cpulock_t p_vmm_cpulock
; /* count cpus in and kickout lock */
341 cpumask_t p_vmm_cpumask
; /* cpus entering or in vmm */
342 struct sys_upmap
*p_upmap
; /* user RO mappable per-process page */
343 forkid_t p_forkid
; /* unique forkid */
344 struct sysreaper
*p_reaper
; /* reaper control */
345 void *p_reserveds
[3]; /* reserved for future */
348 #define lwp_wchan lwp_thread->td_wchan
349 #define lwp_wmesg lwp_thread->td_wmesg
350 #define p_session p_pgrp->pg_session
351 #define p_pgid p_pgrp->pg_id
353 /* These flags are kept in p_flags. */
354 #define P_ADVLOCK 0x00001 /* Process may hold a POSIX advisory lock */
355 #define P_CONTROLT 0x00002 /* Has a controlling terminal */
356 #define P_SWAPPEDOUT 0x00004 /* Swapped out of memory */
357 #define P_SYSVSEM 0x00008 /* Might have SysV semaphores */
358 #define P_PPWAIT 0x00010 /* Parent is waiting for child to exec/exit */
359 #define P_PROFIL 0x00020 /* Has started profiling */
360 #define P_POSTEXIT 0x00040 /* Prevent procfs from stepping after this pt */
361 #define P_SCMOUSE 0x00080 /* Process is held by syscons ioctl */
362 /* was: Sleep is interruptible */
363 #define P_SUGID 0x00100 /* Had set id privileges since last exec */
364 #define P_SYSTEM 0x00200 /* System proc: no sigs, stats or swapping */
365 #define P_MAYBETHREADED 0x00400 /* might be threaded optimization */
366 #define P_TRACED 0x00800 /* Debugged process being traced */
367 #define P_WAITED 0x01000 /* SIGSTOP status was returned by wait3/4 */
368 #define P_WEXIT 0x02000 /* Working on exiting (master exit) */
369 #define P_EXEC 0x04000 /* Process called exec */
370 #define P_CONTINUED 0x08000 /* Proc has continued from a stopped state */
372 #define P_LOWMEMKILL 0x00010000 /* trying to kill due to low memory */
373 #define P_UNUSED17 0x00020000
375 #define P_SWAPWAIT 0x00040000 /* Waiting for a swapin */
376 #define P_UNUSED19 0x00080000 /* was: Now in a zombied state */
378 /* Marked a kernel thread */
379 #define P_UNUSED20 0x00100000 /* was: on a user scheduling run queue */
380 #define P_UNUSED21 0x00200000 /* was: Process is really a kernel thread */
381 #define P_IDLESWAP 0x00400000 /* Swapout was due to idleswap, not load */
383 #define P_JAILED 0x01000000 /* Process is in jail */
384 #define P_SIGVTALRM 0x02000000 /* signal SIGVTALRM pending due to itimer */
385 #define P_SIGPROF 0x04000000 /* signal SIGPROF pending due to itimer */
386 #define P_INEXEC 0x08000000 /* Process is in execve(). */
387 #define P_UNUSED28 0x10000000
388 #define P_UNUSED29 0x20000000
389 #define P_XCPU 0x40000000 /* SIGXCPU */
391 #define LWP_ALTSTACK 0x0000001 /* have alternate signal stack */
392 #define LWP_OLDMASK 0x0000002 /* need to restore mask before pause */
393 #define LWP_SINTR 0x0000008 /* Sleep is interruptible. */
394 #define LWP_SELECT 0x0000010 /* Selecting; wakeup/waiting danger. */
395 #define LWP_UNUSED20 0x0000020
396 #define LWP_UNUSED40 0x0000040
397 #define LWP_UNUSED80 0x0000080
398 #define LWP_PASSIVE_ACQ 0x0000100 /* Passive acquire cpu (see kern_switch) */
399 #define LWP_PAGING 0x0000200 /* Currently in vm_fault */
402 * LWP_MP_WSTOP: When set the thread will stop prior to return to userland
403 * and has been counted in the process stop-threads-count, but
404 * may still be running in kernel-land.
406 * LWP_MP_WEXIT: When set the thread has been asked to exit and will not return
407 * to userland. p_nthreads will not be decremented until the
408 * thread has actually exited.
410 #define LWP_MP_ONRUNQ 0x0000001 /* on a user scheduling run queue */
411 #define LWP_MP_WEXIT 0x0000002 /* working on exiting (lwpuserret()) */
412 #define LWP_MP_WSTOP 0x0000004 /* working on stopping */
413 #define LWP_MP_ULOAD 0x0000008 /* uload accounting for current cpu */
414 #define LWP_MP_RRFORCE 0x0000010 /* forced resched due to rrcount */
415 #define LWP_MP_VNLRU 0x0000020 /* check excessive vnode allocations (lwpuserret()) */
417 #define LWP_MP_URETMASK (LWP_MP_WEXIT | LWP_MP_VNLRU)
419 #define FIRST_LWP_IN_PROC(p) RB_FIRST(lwp_rb_tree, &(p)->p_lwp_tree)
420 #define FOREACH_LWP_IN_PROC(lp, p) \
421 RB_FOREACH(lp, lwp_rb_tree, &(p)->p_lwp_tree)
422 #define ONLY_LWP_IN_PROC(p) _only_lwp_in_proc(p, __func__)
425 struct lwkt_token proc_token
;
426 struct proclist allproc
; /* locked by proc_token */
427 struct pgrplist allpgrp
; /* locked by proc_token */
428 struct sesslist allsess
; /* locked by proc_token */
429 void *pad01
; /* pad for clarity */
433 static inline struct lwp
*
434 _only_lwp_in_proc(struct proc
*p
, const char *caller
)
436 if (p
->p_nthreads
!= 1) {
437 panic("%s: proc %p (pid %d cmd %s) has more than one thread",
438 caller
, p
, p
->p_pid
, p
->p_comm
);
440 return RB_ROOT(&p
->p_lwp_tree
);
445 * We use process IDs <= PID_MAX. NO_PID must also fit in a pid_t and
446 * is used to represent "no process group".
448 #define PID_MAX 999999
449 #define NO_PID 0x7FFFFFFF
451 #define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
455 #ifdef MALLOC_DECLARE
456 MALLOC_DECLARE(M_SESSION
);
457 MALLOC_DECLARE(M_PROC
);
458 MALLOC_DECLARE(M_LWP
);
459 MALLOC_DECLARE(M_SUBPROC
);
460 MALLOC_DECLARE(M_PARGS
);
463 /* for priv_check_cred() */
464 #define NULL_CRED_OKAY 0x2
466 /* Handy macro to determine if p1 can mangle p2 */
468 #define PRISON_CHECK(cr1, cr2) \
469 ((!(cr1)->cr_prison) || (cr1)->cr_prison == (cr2)->cr_prison)
474 extern void stopevent(struct proc
*, unsigned int, unsigned int);
475 #define STOPEVENT(p,e,v) \
477 if ((p)->p_stops & (e)) { \
483 * Hold process in memory, don't destruct, used by ktrace, procfs, sigio,
484 * and signaling code (e.g. ksignal()).
488 #define PHOLD(p) phold((p))
489 #define PRELE(p) prele((p))
490 #define PHOLDZOMB(p) pholdzomb((p))
491 #define PRELEZOMB(p) prelezomb((p))
492 #define PSTALL(p, msg, n) \
493 do { if ((p)->p_lock > (n)) pstall((p), (msg), (n)); } while (0)
495 #define STOPLWP(p, lp) \
496 (((p)->p_stat == SSTOP || (p)->p_stat == SCORE) && \
497 ((lp)->lwp_mpflags & LWP_MP_WEXIT) == 0)
500 * Hold lwp in memory, don't destruct, normally for ptrace/procfs work
501 * atomic ops because they can occur from an IPI.
504 #define LWPHOLD(lp) atomic_add_int(&(lp)->lwp_lock, 1)
505 #define LWPRELE(lp) atomic_add_int(&(lp)->lwp_lock, -1)
507 extern struct proc proc0
; /* Process slot for swapper. */
508 extern struct lwp lwp0
; /* LWP slot for swapper. */
509 extern struct thread thread0
; /* Thread slot for swapper. */
510 extern int nprocs
, maxproc
; /* Current and max number of procs. */
511 extern int maxprocperuid
; /* Max procs per uid. */
512 extern int sched_quantum
; /* Scheduling quantum in ticks */
514 extern struct proc
*initproc
; /* Process slot for init */
515 extern struct thread
*pagethread
, *updatethread
;
518 * Scheduler independant variables. The primary scheduler polling frequency,
519 * the maximum ESTCPU value, and the weighting factor for nice values. A
520 * cpu bound program's estcpu will increase to ESTCPUMAX - 1.
522 #define ESTCPUFREQ 50
524 extern u_long ps_arg_cache_limit
;
525 extern int ps_argsopen
;
526 extern int ps_showallprocs
;
528 struct proc
*pfind (pid_t
); /* Find process by id w/ref */
529 struct proc
*pfindn (pid_t
); /* Find process by id wo/ref */
530 struct pgrp
*pgfind (pid_t
); /* Find process group by id w/ref */
531 struct proc
*zpfind (pid_t
); /* Find zombie process by id w/ref */
532 void pgref (struct pgrp
*); /* Ref pgrp preventing disposal */
533 void pgrel (struct pgrp
*); /* Deref pgrp & dispose on 1->0 trans */
538 int enterpgrp (struct proc
*p
, pid_t pgid
, int mksess
);
539 void proc_add_allproc(struct proc
*p
);
540 void proc_move_allproc_zombie(struct proc
*);
541 void proc_remove_zombie(struct proc
*);
542 void allproc_scan(int (*callback
)(struct proc
*, void *), void *data
);
543 void alllwp_scan(int (*callback
)(struct lwp
*, void *), void *data
);
544 void zombproc_scan(int (*callback
)(struct proc
*, void *), void *data
);
545 void fixjobc (struct proc
*p
, struct pgrp
*pgrp
, int entering
);
546 void updatepcpu(struct lwp
*, int, int);
547 int inferior (struct proc
*p
);
548 int leavepgrp (struct proc
*p
);
549 void sess_hold(struct session
*sp
);
550 void sess_rele(struct session
*sp
);
551 void procinit (void);
552 void procinsertinit(struct proc
*p
);
553 void sessinsertinit(struct session
*sess
);
554 void pgrpinsertinit(struct pgrp
*pg
);
555 void relscurproc(struct proc
*curp
);
556 int p_trespass (struct ucred
*cr1
, struct ucred
*cr2
);
557 void setrunnable (struct lwp
*);
558 void proc_stop (struct proc
*, int);
559 void proc_unstop (struct proc
*, int);
560 void sleep_gdinit (struct globaldata
*);
561 thread_t
cpu_heavy_switch (struct thread
*);
562 thread_t
cpu_lwkt_switch (struct thread
*);
564 void cpu_lwp_exit (void) __dead2
;
565 void cpu_thread_exit (void) __dead2
;
566 void lwp_exit (int masterexit
, void *waddr
) __dead2
;
567 void lwp_dispose (struct lwp
*);
568 int killalllwps (int);
569 void exit1 (int) __dead2
;
570 void cpu_fork (struct lwp
*, struct lwp
*, int);
571 int cpu_prepare_lwp(struct lwp
*, struct lwp_params
*);
572 void cpu_set_fork_handler (struct lwp
*, void (*)(void *, struct trapframe
*), void *);
573 void cpu_set_thread_handler(struct thread
*td
, void (*retfunc
)(void), void *func
, void *arg
);
574 int fork1 (struct lwp
*, int, struct proc
**);
575 void start_forked_proc (struct lwp
*, struct proc
*);
576 int trace_req (struct proc
*);
577 void cpu_thread_wait (struct thread
*);
578 void setsugid (void);
579 void faultin (struct proc
*p
);
580 void swapin_request (void);
581 void phold (struct proc
*);
582 void prele (struct proc
*);
583 int pholdzomb (struct proc
*);
584 void prelezomb (struct proc
*);
585 void pstall (struct proc
*, const char *, int);
586 void lwpuserret(struct lwp
*);
587 void lwpkthreaddeferred(void);
588 void proc_usermap(struct proc
*p
, int invfork
);
589 void proc_userunmap(struct proc
*p
);
590 void reaper_hold(struct sysreaper
*reap
);
591 void reaper_drop(struct sysreaper
*reap
);
592 struct sysreaper
*reaper_exit(struct proc
*p
);
593 void reaper_init(struct proc
*p
, struct sysreaper
*reap
);
594 struct proc
*reaper_get(struct sysreaper
*reap
);
596 u_int32_t
procrunnable (void);
600 #endif /* _KERNEL || _KERNEL_STRUCTURES */
601 #endif /* !_SYS_PROC_H_ */