134eb42e24
zombie list for the pid. This allows several kern.proc sysctls to report useful information for zombies. Hold the allproc_lock around all searches instead of relocking it. Remove private pfind_locked() from the new nfs client code. Requested and reviewed by: pjd Tested by: pho MFC after: 3 weeks
978 lines
40 KiB
C
978 lines
40 KiB
C
/*-
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* Copyright (c) 1986, 1989, 1991, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)proc.h 8.15 (Berkeley) 5/19/95
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* $FreeBSD$
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*/
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#ifndef _SYS_PROC_H_
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#define _SYS_PROC_H_
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#include <sys/callout.h> /* For struct callout. */
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#include <sys/event.h> /* For struct klist. */
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#include <sys/condvar.h>
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#ifndef _KERNEL
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#include <sys/filedesc.h>
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#endif
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#include <sys/queue.h>
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#include <sys/_lock.h>
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#include <sys/lock_profile.h>
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#include <sys/_mutex.h>
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#include <sys/osd.h>
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#include <sys/priority.h>
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#include <sys/rtprio.h> /* XXX. */
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#include <sys/runq.h>
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#include <sys/resource.h>
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#include <sys/sigio.h>
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#include <sys/signal.h>
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#include <sys/signalvar.h>
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#ifndef _KERNEL
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#include <sys/time.h> /* For structs itimerval, timeval. */
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#else
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#include <sys/pcpu.h>
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#endif
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#include <sys/ucontext.h>
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#include <sys/ucred.h>
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#include <machine/proc.h> /* Machine-dependent proc substruct. */
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/*
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* One structure allocated per session.
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*
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* List of locks
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* (m) locked by s_mtx mtx
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* (e) locked by proctree_lock sx
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* (c) const until freeing
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*/
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struct session {
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u_int s_count; /* Ref cnt; pgrps in session - atomic. */
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struct proc *s_leader; /* (m + e) Session leader. */
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struct vnode *s_ttyvp; /* (m) Vnode of controlling tty. */
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struct cdev_priv *s_ttydp; /* (m) Device of controlling tty. */
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struct tty *s_ttyp; /* (e) Controlling tty. */
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pid_t s_sid; /* (c) Session ID. */
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/* (m) Setlogin() name: */
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char s_login[roundup(MAXLOGNAME, sizeof(long))];
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struct mtx s_mtx; /* Mutex to protect members. */
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};
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/*
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* One structure allocated per process group.
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*
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* List of locks
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* (m) locked by pg_mtx mtx
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* (e) locked by proctree_lock sx
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* (c) const until freeing
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*/
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struct pgrp {
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LIST_ENTRY(pgrp) pg_hash; /* (e) Hash chain. */
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LIST_HEAD(, proc) pg_members; /* (m + e) Pointer to pgrp members. */
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struct session *pg_session; /* (c) Pointer to session. */
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struct sigiolst pg_sigiolst; /* (m) List of sigio sources. */
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pid_t pg_id; /* (c) Process group id. */
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int pg_jobc; /* (m) Job control process count. */
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struct mtx pg_mtx; /* Mutex to protect members */
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};
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/*
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* pargs, used to hold a copy of the command line, if it had a sane length.
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*/
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struct pargs {
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u_int ar_ref; /* Reference count. */
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u_int ar_length; /* Length. */
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u_char ar_args[1]; /* Arguments. */
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};
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/*-
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* Description of a process.
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*
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* This structure contains the information needed to manage a thread of
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* control, known in UN*X as a process; it has references to substructures
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* containing descriptions of things that the process uses, but may share
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* with related processes. The process structure and the substructures
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* are always addressable except for those marked "(CPU)" below,
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* which might be addressable only on a processor on which the process
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* is running.
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*
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* Below is a key of locks used to protect each member of struct proc. The
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* lock is indicated by a reference to a specific character in parens in the
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* associated comment.
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* * - not yet protected
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* a - only touched by curproc or parent during fork/wait
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* b - created at fork, never changes
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* (exception aiods switch vmspaces, but they are also
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* marked 'P_SYSTEM' so hopefully it will be left alone)
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* c - locked by proc mtx
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* d - locked by allproc_lock lock
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* e - locked by proctree_lock lock
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* f - session mtx
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* g - process group mtx
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* h - callout_lock mtx
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* i - by curproc or the master session mtx
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* j - locked by proc slock
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* k - only accessed by curthread
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* k*- only accessed by curthread and from an interrupt
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* l - the attaching proc or attaching proc parent
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* m - Giant
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* n - not locked, lazy
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* o - ktrace lock
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* q - td_contested lock
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* r - p_peers lock
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* t - thread lock
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* x - created at fork, only changes during single threading in exec
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* y - created at first aio, doesn't change until exit or exec at which
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* point we are single-threaded and only curthread changes it
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* z - zombie threads lock
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*
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* If the locking key specifies two identifiers (for example, p_pptr) then
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* either lock is sufficient for read access, but both locks must be held
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* for write access.
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*/
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struct cpuset;
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struct kaioinfo;
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struct kaudit_record;
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struct kdtrace_proc;
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struct kdtrace_thread;
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struct mqueue_notifier;
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struct nlminfo;
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struct p_sched;
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struct proc;
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struct procdesc;
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struct racct;
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struct sbuf;
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struct sleepqueue;
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struct td_sched;
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struct thread;
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struct trapframe;
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struct turnstile;
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/*
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* XXX: Does this belong in resource.h or resourcevar.h instead?
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* Resource usage extension. The times in rusage structs in the kernel are
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* never up to date. The actual times are kept as runtimes and tick counts
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* (with control info in the "previous" times), and are converted when
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* userland asks for rusage info. Backwards compatibility prevents putting
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* this directly in the user-visible rusage struct.
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*
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* Locking for p_rux: (cj) means (j) for p_rux and (c) for p_crux.
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* Locking for td_rux: (t) for all fields.
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*/
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struct rusage_ext {
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uint64_t rux_runtime; /* (cj) Real time. */
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uint64_t rux_uticks; /* (cj) Statclock hits in user mode. */
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uint64_t rux_sticks; /* (cj) Statclock hits in sys mode. */
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uint64_t rux_iticks; /* (cj) Statclock hits in intr mode. */
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uint64_t rux_uu; /* (c) Previous user time in usec. */
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uint64_t rux_su; /* (c) Previous sys time in usec. */
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uint64_t rux_tu; /* (c) Previous total time in usec. */
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};
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/*
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* Kernel runnable context (thread).
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* This is what is put to sleep and reactivated.
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* Thread context. Processes may have multiple threads.
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*/
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struct thread {
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struct mtx *volatile td_lock; /* replaces sched lock */
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struct proc *td_proc; /* (*) Associated process. */
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TAILQ_ENTRY(thread) td_plist; /* (*) All threads in this proc. */
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TAILQ_ENTRY(thread) td_runq; /* (t) Run queue. */
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TAILQ_ENTRY(thread) td_slpq; /* (t) Sleep queue. */
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TAILQ_ENTRY(thread) td_lockq; /* (t) Lock queue. */
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LIST_ENTRY(thread) td_hash; /* (d) Hash chain. */
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struct cpuset *td_cpuset; /* (t) CPU affinity mask. */
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struct seltd *td_sel; /* Select queue/channel. */
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struct sleepqueue *td_sleepqueue; /* (k) Associated sleep queue. */
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struct turnstile *td_turnstile; /* (k) Associated turnstile. */
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struct rl_q_entry *td_rlqe; /* (k) Associated range lock entry. */
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struct umtx_q *td_umtxq; /* (c?) Link for when we're blocked. */
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lwpid_t td_tid; /* (b) Thread ID. */
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sigqueue_t td_sigqueue; /* (c) Sigs arrived, not delivered. */
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#define td_siglist td_sigqueue.sq_signals
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u_char td_lend_user_pri; /* (t) Lend user pri. */
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/* Cleared during fork1() */
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#define td_startzero td_flags
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int td_flags; /* (t) TDF_* flags. */
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int td_inhibitors; /* (t) Why can not run. */
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int td_pflags; /* (k) Private thread (TDP_*) flags. */
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int td_dupfd; /* (k) Ret value from fdopen. XXX */
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int td_sqqueue; /* (t) Sleepqueue queue blocked on. */
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void *td_wchan; /* (t) Sleep address. */
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const char *td_wmesg; /* (t) Reason for sleep. */
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u_char td_lastcpu; /* (t) Last cpu we were on. */
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u_char td_oncpu; /* (t) Which cpu we are on. */
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volatile u_char td_owepreempt; /* (k*) Preempt on last critical_exit */
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u_char td_tsqueue; /* (t) Turnstile queue blocked on. */
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short td_locks; /* (k) Count of non-spin locks. */
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short td_rw_rlocks; /* (k) Count of rwlock read locks. */
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short td_lk_slocks; /* (k) Count of lockmgr shared locks. */
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short td_stopsched; /* (k) Scheduler stopped. */
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struct turnstile *td_blocked; /* (t) Lock thread is blocked on. */
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const char *td_lockname; /* (t) Name of lock blocked on. */
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LIST_HEAD(, turnstile) td_contested; /* (q) Contested locks. */
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struct lock_list_entry *td_sleeplocks; /* (k) Held sleep locks. */
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int td_intr_nesting_level; /* (k) Interrupt recursion. */
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int td_pinned; /* (k) Temporary cpu pin count. */
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struct ucred *td_ucred; /* (k) Reference to credentials. */
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u_int td_estcpu; /* (t) estimated cpu utilization */
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int td_slptick; /* (t) Time at sleep. */
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int td_blktick; /* (t) Time spent blocked. */
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int td_swvoltick; /* (t) Time at last SW_VOL switch. */
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u_int td_cow; /* (*) Number of copy-on-write faults */
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struct rusage td_ru; /* (t) rusage information. */
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struct rusage_ext td_rux; /* (t) Internal rusage information. */
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uint64_t td_incruntime; /* (t) Cpu ticks to transfer to proc. */
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uint64_t td_runtime; /* (t) How many cpu ticks we've run. */
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u_int td_pticks; /* (t) Statclock hits for profiling */
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u_int td_sticks; /* (t) Statclock hits in system mode. */
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u_int td_iticks; /* (t) Statclock hits in intr mode. */
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u_int td_uticks; /* (t) Statclock hits in user mode. */
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int td_intrval; /* (t) Return value for sleepq. */
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sigset_t td_oldsigmask; /* (k) Saved mask from pre sigpause. */
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volatile u_int td_generation; /* (k) For detection of preemption */
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stack_t td_sigstk; /* (k) Stack ptr and on-stack flag. */
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int td_xsig; /* (c) Signal for ptrace */
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u_long td_profil_addr; /* (k) Temporary addr until AST. */
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u_int td_profil_ticks; /* (k) Temporary ticks until AST. */
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char td_name[MAXCOMLEN + 1]; /* (*) Thread name. */
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struct file *td_fpop; /* (k) file referencing cdev under op */
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int td_dbgflags; /* (c) Userland debugger flags */
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struct ksiginfo td_dbgksi; /* (c) ksi reflected to debugger. */
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int td_ng_outbound; /* (k) Thread entered ng from above. */
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struct osd td_osd; /* (k) Object specific data. */
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struct vm_map_entry *td_map_def_user; /* (k) Deferred entries. */
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pid_t td_dbg_forked; /* (c) Child pid for debugger. */
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u_int td_vp_reserv; /* (k) Count of reserved vnodes. */
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#define td_endzero td_sigmask
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/* Copied during fork1() or create_thread(). */
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#define td_startcopy td_endzero
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sigset_t td_sigmask; /* (c) Current signal mask. */
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u_char td_rqindex; /* (t) Run queue index. */
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u_char td_base_pri; /* (t) Thread base kernel priority. */
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u_char td_priority; /* (t) Thread active priority. */
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u_char td_pri_class; /* (t) Scheduling class. */
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u_char td_user_pri; /* (t) User pri from estcpu and nice. */
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u_char td_base_user_pri; /* (t) Base user pri */
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#define td_endcopy td_pcb
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/*
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* Fields that must be manually set in fork1() or create_thread()
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* or already have been set in the allocator, constructor, etc.
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*/
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struct pcb *td_pcb; /* (k) Kernel VA of pcb and kstack. */
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enum {
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TDS_INACTIVE = 0x0,
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TDS_INHIBITED,
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TDS_CAN_RUN,
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TDS_RUNQ,
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TDS_RUNNING
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} td_state; /* (t) thread state */
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register_t td_retval[2]; /* (k) Syscall aux returns. */
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struct callout td_slpcallout; /* (h) Callout for sleep. */
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struct trapframe *td_frame; /* (k) */
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struct vm_object *td_kstack_obj;/* (a) Kstack object. */
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vm_offset_t td_kstack; /* (a) Kernel VA of kstack. */
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int td_kstack_pages; /* (a) Size of the kstack. */
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volatile u_int td_critnest; /* (k*) Critical section nest level. */
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struct mdthread td_md; /* (k) Any machine-dependent fields. */
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struct td_sched *td_sched; /* (*) Scheduler-specific data. */
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struct kaudit_record *td_ar; /* (k) Active audit record, if any. */
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struct lpohead td_lprof[2]; /* (a) lock profiling objects. */
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struct kdtrace_thread *td_dtrace; /* (*) DTrace-specific data. */
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int td_errno; /* Error returned by last syscall. */
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struct vnet *td_vnet; /* (k) Effective vnet. */
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const char *td_vnet_lpush; /* (k) Debugging vnet push / pop. */
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struct trapframe *td_intr_frame;/* (k) Frame of the current irq */
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struct proc *td_rfppwait_p; /* (k) The vforked child */
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struct vm_page **td_ma; /* (k) uio pages held */
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int td_ma_cnt; /* (k) size of *td_ma */
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};
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struct mtx *thread_lock_block(struct thread *);
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void thread_lock_unblock(struct thread *, struct mtx *);
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void thread_lock_set(struct thread *, struct mtx *);
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#define THREAD_LOCK_ASSERT(td, type) \
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do { \
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struct mtx *__m = (td)->td_lock; \
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if (__m != &blocked_lock) \
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mtx_assert(__m, (type)); \
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} while (0)
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#ifdef INVARIANTS
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#define THREAD_LOCKPTR_ASSERT(td, lock) \
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do { \
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struct mtx *__m = (td)->td_lock; \
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KASSERT((__m == &blocked_lock || __m == (lock)), \
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("Thread %p lock %p does not match %p", td, __m, (lock))); \
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} while (0)
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#else
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#define THREAD_LOCKPTR_ASSERT(td, lock)
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#endif
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#define CRITICAL_ASSERT(td) \
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KASSERT((td)->td_critnest >= 1, ("Not in critical section"));
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/*
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* Flags kept in td_flags:
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* To change these you MUST have the scheduler lock.
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*/
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#define TDF_BORROWING 0x00000001 /* Thread is borrowing pri from another. */
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#define TDF_INPANIC 0x00000002 /* Caused a panic, let it drive crashdump. */
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#define TDF_INMEM 0x00000004 /* Thread's stack is in memory. */
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#define TDF_SINTR 0x00000008 /* Sleep is interruptible. */
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#define TDF_TIMEOUT 0x00000010 /* Timing out during sleep. */
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#define TDF_IDLETD 0x00000020 /* This is a per-CPU idle thread. */
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#define TDF_CANSWAP 0x00000040 /* Thread can be swapped. */
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#define TDF_SLEEPABORT 0x00000080 /* sleepq_abort was called. */
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#define TDF_KTH_SUSP 0x00000100 /* kthread is suspended */
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#define TDF_UNUSED09 0x00000200 /* --available-- */
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#define TDF_BOUNDARY 0x00000400 /* Thread suspended at user boundary */
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#define TDF_ASTPENDING 0x00000800 /* Thread has some asynchronous events. */
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#define TDF_TIMOFAIL 0x00001000 /* Timeout from sleep after we were awake. */
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#define TDF_SBDRY 0x00002000 /* Stop only on usermode boundary. */
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#define TDF_UPIBLOCKED 0x00004000 /* Thread blocked on user PI mutex. */
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#define TDF_NEEDSUSPCHK 0x00008000 /* Thread may need to suspend. */
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#define TDF_NEEDRESCHED 0x00010000 /* Thread needs to yield. */
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#define TDF_NEEDSIGCHK 0x00020000 /* Thread may need signal delivery. */
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#define TDF_NOLOAD 0x00040000 /* Ignore during load avg calculations. */
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#define TDF_UNUSED19 0x00080000 /* --available-- */
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#define TDF_THRWAKEUP 0x00100000 /* Libthr thread must not suspend itself. */
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#define TDF_UNUSED21 0x00200000 /* --available-- */
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#define TDF_SWAPINREQ 0x00400000 /* Swapin request due to wakeup. */
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#define TDF_UNUSED23 0x00800000 /* --available-- */
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#define TDF_SCHED0 0x01000000 /* Reserved for scheduler private use */
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#define TDF_SCHED1 0x02000000 /* Reserved for scheduler private use */
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#define TDF_SCHED2 0x04000000 /* Reserved for scheduler private use */
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#define TDF_SCHED3 0x08000000 /* Reserved for scheduler private use */
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#define TDF_ALRMPEND 0x10000000 /* Pending SIGVTALRM needs to be posted. */
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#define TDF_PROFPEND 0x20000000 /* Pending SIGPROF needs to be posted. */
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#define TDF_MACPEND 0x40000000 /* AST-based MAC event pending. */
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/* Userland debug flags */
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#define TDB_SUSPEND 0x00000001 /* Thread is suspended by debugger */
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#define TDB_XSIG 0x00000002 /* Thread is exchanging signal under trace */
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#define TDB_USERWR 0x00000004 /* Debugger modified memory or registers */
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#define TDB_SCE 0x00000008 /* Thread performs syscall enter */
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#define TDB_SCX 0x00000010 /* Thread performs syscall exit */
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#define TDB_EXEC 0x00000020 /* TDB_SCX from exec(2) family */
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#define TDB_FORK 0x00000040 /* TDB_SCX from fork(2) that created new
|
|
process */
|
|
#define TDB_STOPATFORK 0x00000080 /* Stop at the return from fork (child
|
|
only) */
|
|
#define TDB_CHILD 0x00000100 /* New child indicator for ptrace() */
|
|
|
|
/*
|
|
* "Private" flags kept in td_pflags:
|
|
* These are only written by curthread and thus need no locking.
|
|
*/
|
|
#define TDP_OLDMASK 0x00000001 /* Need to restore mask after suspend. */
|
|
#define TDP_INKTR 0x00000002 /* Thread is currently in KTR code. */
|
|
#define TDP_INKTRACE 0x00000004 /* Thread is currently in KTRACE code. */
|
|
#define TDP_BUFNEED 0x00000008 /* Do not recurse into the buf flush */
|
|
#define TDP_COWINPROGRESS 0x00000010 /* Snapshot copy-on-write in progress. */
|
|
#define TDP_ALTSTACK 0x00000020 /* Have alternate signal stack. */
|
|
#define TDP_DEADLKTREAT 0x00000040 /* Lock aquisition - deadlock treatment. */
|
|
#define TDP_NOFAULTING 0x00000080 /* Do not handle page faults. */
|
|
#define TDP_NOSLEEPING 0x00000100 /* Thread is not allowed to sleep on a sq. */
|
|
#define TDP_OWEUPC 0x00000200 /* Call addupc() at next AST. */
|
|
#define TDP_ITHREAD 0x00000400 /* Thread is an interrupt thread. */
|
|
#define TDP_SYNCIO 0x00000800 /* Local override, disable async i/o. */
|
|
#define TDP_SCHED1 0x00001000 /* Reserved for scheduler private use */
|
|
#define TDP_SCHED2 0x00002000 /* Reserved for scheduler private use */
|
|
#define TDP_SCHED3 0x00004000 /* Reserved for scheduler private use */
|
|
#define TDP_SCHED4 0x00008000 /* Reserved for scheduler private use */
|
|
#define TDP_GEOM 0x00010000 /* Settle GEOM before finishing syscall */
|
|
#define TDP_SOFTDEP 0x00020000 /* Stuck processing softdep worklist */
|
|
#define TDP_NORUNNINGBUF 0x00040000 /* Ignore runningbufspace check */
|
|
#define TDP_WAKEUP 0x00080000 /* Don't sleep in umtx cond_wait */
|
|
#define TDP_INBDFLUSH 0x00100000 /* Already in BO_BDFLUSH, do not recurse */
|
|
#define TDP_KTHREAD 0x00200000 /* This is an official kernel thread */
|
|
#define TDP_CALLCHAIN 0x00400000 /* Capture thread's callchain */
|
|
#define TDP_IGNSUSP 0x00800000 /* Permission to ignore the MNTK_SUSPEND* */
|
|
#define TDP_AUDITREC 0x01000000 /* Audit record pending on thread */
|
|
#define TDP_RFPPWAIT 0x02000000 /* Handle RFPPWAIT on syscall exit */
|
|
#define TDP_RESETSPUR 0x04000000 /* Reset spurious page fault history. */
|
|
#define TDP_NERRNO 0x08000000 /* Last errno is already in td_errno */
|
|
#define TDP_UIOHELD 0x10000000 /* Current uio has pages held in td_ma */
|
|
|
|
/*
|
|
* Reasons that the current thread can not be run yet.
|
|
* More than one may apply.
|
|
*/
|
|
#define TDI_SUSPENDED 0x0001 /* On suspension queue. */
|
|
#define TDI_SLEEPING 0x0002 /* Actually asleep! (tricky). */
|
|
#define TDI_SWAPPED 0x0004 /* Stack not in mem. Bad juju if run. */
|
|
#define TDI_LOCK 0x0008 /* Stopped on a lock. */
|
|
#define TDI_IWAIT 0x0010 /* Awaiting interrupt. */
|
|
|
|
#define TD_IS_SLEEPING(td) ((td)->td_inhibitors & TDI_SLEEPING)
|
|
#define TD_ON_SLEEPQ(td) ((td)->td_wchan != NULL)
|
|
#define TD_IS_SUSPENDED(td) ((td)->td_inhibitors & TDI_SUSPENDED)
|
|
#define TD_IS_SWAPPED(td) ((td)->td_inhibitors & TDI_SWAPPED)
|
|
#define TD_ON_LOCK(td) ((td)->td_inhibitors & TDI_LOCK)
|
|
#define TD_AWAITING_INTR(td) ((td)->td_inhibitors & TDI_IWAIT)
|
|
#define TD_IS_RUNNING(td) ((td)->td_state == TDS_RUNNING)
|
|
#define TD_ON_RUNQ(td) ((td)->td_state == TDS_RUNQ)
|
|
#define TD_CAN_RUN(td) ((td)->td_state == TDS_CAN_RUN)
|
|
#define TD_IS_INHIBITED(td) ((td)->td_state == TDS_INHIBITED)
|
|
#define TD_ON_UPILOCK(td) ((td)->td_flags & TDF_UPIBLOCKED)
|
|
#define TD_IS_IDLETHREAD(td) ((td)->td_flags & TDF_IDLETD)
|
|
|
|
|
|
#define TD_SET_INHIB(td, inhib) do { \
|
|
(td)->td_state = TDS_INHIBITED; \
|
|
(td)->td_inhibitors |= (inhib); \
|
|
} while (0)
|
|
|
|
#define TD_CLR_INHIB(td, inhib) do { \
|
|
if (((td)->td_inhibitors & (inhib)) && \
|
|
(((td)->td_inhibitors &= ~(inhib)) == 0)) \
|
|
(td)->td_state = TDS_CAN_RUN; \
|
|
} while (0)
|
|
|
|
#define TD_SET_SLEEPING(td) TD_SET_INHIB((td), TDI_SLEEPING)
|
|
#define TD_SET_SWAPPED(td) TD_SET_INHIB((td), TDI_SWAPPED)
|
|
#define TD_SET_LOCK(td) TD_SET_INHIB((td), TDI_LOCK)
|
|
#define TD_SET_SUSPENDED(td) TD_SET_INHIB((td), TDI_SUSPENDED)
|
|
#define TD_SET_IWAIT(td) TD_SET_INHIB((td), TDI_IWAIT)
|
|
#define TD_SET_EXITING(td) TD_SET_INHIB((td), TDI_EXITING)
|
|
|
|
#define TD_CLR_SLEEPING(td) TD_CLR_INHIB((td), TDI_SLEEPING)
|
|
#define TD_CLR_SWAPPED(td) TD_CLR_INHIB((td), TDI_SWAPPED)
|
|
#define TD_CLR_LOCK(td) TD_CLR_INHIB((td), TDI_LOCK)
|
|
#define TD_CLR_SUSPENDED(td) TD_CLR_INHIB((td), TDI_SUSPENDED)
|
|
#define TD_CLR_IWAIT(td) TD_CLR_INHIB((td), TDI_IWAIT)
|
|
|
|
#define TD_SET_RUNNING(td) (td)->td_state = TDS_RUNNING
|
|
#define TD_SET_RUNQ(td) (td)->td_state = TDS_RUNQ
|
|
#define TD_SET_CAN_RUN(td) (td)->td_state = TDS_CAN_RUN
|
|
|
|
/*
|
|
* Process structure.
|
|
*/
|
|
struct proc {
|
|
LIST_ENTRY(proc) p_list; /* (d) List of all processes. */
|
|
TAILQ_HEAD(, thread) p_threads; /* (c) all threads. */
|
|
struct mtx p_slock; /* process spin lock */
|
|
struct ucred *p_ucred; /* (c) Process owner's identity. */
|
|
struct filedesc *p_fd; /* (b) Open files. */
|
|
struct filedesc_to_leader *p_fdtol; /* (b) Tracking node */
|
|
struct pstats *p_stats; /* (b) Accounting/statistics (CPU). */
|
|
struct plimit *p_limit; /* (c) Process limits. */
|
|
struct callout p_limco; /* (c) Limit callout handle */
|
|
struct sigacts *p_sigacts; /* (x) Signal actions, state (CPU). */
|
|
|
|
/*
|
|
* The following don't make too much sense.
|
|
* See the td_ or ke_ versions of the same flags.
|
|
*/
|
|
int p_flag; /* (c) P_* flags. */
|
|
enum {
|
|
PRS_NEW = 0, /* In creation */
|
|
PRS_NORMAL, /* threads can be run. */
|
|
PRS_ZOMBIE
|
|
} p_state; /* (j/c) Process status. */
|
|
pid_t p_pid; /* (b) Process identifier. */
|
|
LIST_ENTRY(proc) p_hash; /* (d) Hash chain. */
|
|
LIST_ENTRY(proc) p_pglist; /* (g + e) List of processes in pgrp. */
|
|
struct proc *p_pptr; /* (c + e) Pointer to parent process. */
|
|
LIST_ENTRY(proc) p_sibling; /* (e) List of sibling processes. */
|
|
LIST_HEAD(, proc) p_children; /* (e) Pointer to list of children. */
|
|
struct mtx p_mtx; /* (n) Lock for this struct. */
|
|
struct ksiginfo *p_ksi; /* Locked by parent proc lock */
|
|
sigqueue_t p_sigqueue; /* (c) Sigs not delivered to a td. */
|
|
#define p_siglist p_sigqueue.sq_signals
|
|
|
|
/* The following fields are all zeroed upon creation in fork. */
|
|
#define p_startzero p_oppid
|
|
pid_t p_oppid; /* (c + e) Save ppid in ptrace. XXX */
|
|
struct vmspace *p_vmspace; /* (b) Address space. */
|
|
u_int p_swtick; /* (c) Tick when swapped in or out. */
|
|
struct itimerval p_realtimer; /* (c) Alarm timer. */
|
|
struct rusage p_ru; /* (a) Exit information. */
|
|
struct rusage_ext p_rux; /* (cj) Internal resource usage. */
|
|
struct rusage_ext p_crux; /* (c) Internal child resource usage. */
|
|
int p_profthreads; /* (c) Num threads in addupc_task. */
|
|
volatile int p_exitthreads; /* (j) Number of threads exiting */
|
|
int p_traceflag; /* (o) Kernel trace points. */
|
|
struct vnode *p_tracevp; /* (c + o) Trace to vnode. */
|
|
struct ucred *p_tracecred; /* (o) Credentials to trace with. */
|
|
struct vnode *p_textvp; /* (b) Vnode of executable. */
|
|
u_int p_lock; /* (c) Proclock (prevent swap) count. */
|
|
struct sigiolst p_sigiolst; /* (c) List of sigio sources. */
|
|
int p_sigparent; /* (c) Signal to parent on exit. */
|
|
int p_sig; /* (n) For core dump/debugger XXX. */
|
|
u_long p_code; /* (n) For core dump/debugger XXX. */
|
|
u_int p_stops; /* (c) Stop event bitmask. */
|
|
u_int p_stype; /* (c) Stop event type. */
|
|
char p_step; /* (c) Process is stopped. */
|
|
u_char p_pfsflags; /* (c) Procfs flags. */
|
|
struct nlminfo *p_nlminfo; /* (?) Only used by/for lockd. */
|
|
struct kaioinfo *p_aioinfo; /* (y) ASYNC I/O info. */
|
|
struct thread *p_singlethread;/* (c + j) If single threading this is it */
|
|
int p_suspcount; /* (j) Num threads in suspended mode. */
|
|
struct thread *p_xthread; /* (c) Trap thread */
|
|
int p_boundary_count;/* (j) Num threads at user boundary */
|
|
int p_pendingcnt; /* how many signals are pending */
|
|
struct itimers *p_itimers; /* (c) POSIX interval timers. */
|
|
struct procdesc *p_procdesc; /* (e) Process descriptor, if any. */
|
|
/* End area that is zeroed on creation. */
|
|
#define p_endzero p_magic
|
|
|
|
/* The following fields are all copied upon creation in fork. */
|
|
#define p_startcopy p_endzero
|
|
u_int p_magic; /* (b) Magic number. */
|
|
int p_osrel; /* (x) osreldate for the
|
|
binary (from ELF note, if any) */
|
|
char p_comm[MAXCOMLEN + 1]; /* (b) Process name. */
|
|
struct pgrp *p_pgrp; /* (c + e) Pointer to process group. */
|
|
struct sysentvec *p_sysent; /* (b) Syscall dispatch info. */
|
|
struct pargs *p_args; /* (c) Process arguments. */
|
|
rlim_t p_cpulimit; /* (c) Current CPU limit in seconds. */
|
|
signed char p_nice; /* (c) Process "nice" value. */
|
|
int p_fibnum; /* in this routing domain XXX MRT */
|
|
/* End area that is copied on creation. */
|
|
#define p_endcopy p_xstat
|
|
|
|
u_short p_xstat; /* (c) Exit status; also stop sig. */
|
|
struct knlist p_klist; /* (c) Knotes attached to this proc. */
|
|
int p_numthreads; /* (c) Number of threads. */
|
|
struct mdproc p_md; /* Any machine-dependent fields. */
|
|
struct callout p_itcallout; /* (h + c) Interval timer callout. */
|
|
u_short p_acflag; /* (c) Accounting flags. */
|
|
struct proc *p_peers; /* (r) */
|
|
struct proc *p_leader; /* (b) */
|
|
void *p_emuldata; /* (c) Emulator state data. */
|
|
struct label *p_label; /* (*) Proc (not subject) MAC label. */
|
|
struct p_sched *p_sched; /* (*) Scheduler-specific data. */
|
|
STAILQ_HEAD(, ktr_request) p_ktr; /* (o) KTR event queue. */
|
|
LIST_HEAD(, mqueue_notifier) p_mqnotifier; /* (c) mqueue notifiers.*/
|
|
struct kdtrace_proc *p_dtrace; /* (*) DTrace-specific data. */
|
|
struct cv p_pwait; /* (*) wait cv for exit/exec. */
|
|
struct cv p_dbgwait; /* (*) wait cv for debugger attach
|
|
after fork. */
|
|
uint64_t p_prev_runtime; /* (c) Resource usage accounting. */
|
|
struct racct *p_racct; /* (b) Resource accounting. */
|
|
u_char p_throttled; /* (c) Flag for racct pcpu throttling */
|
|
/*
|
|
* An orphan is the child that has beed re-parented to the
|
|
* debugger as a result of attaching to it. Need to keep
|
|
* track of them for parent to be able to collect the exit
|
|
* status of what used to be children.
|
|
*/
|
|
LIST_ENTRY(proc) p_orphan; /* (e) List of orphan processes. */
|
|
LIST_HEAD(, proc) p_orphans; /* (e) Pointer to list of orphans. */
|
|
};
|
|
|
|
#define p_session p_pgrp->pg_session
|
|
#define p_pgid p_pgrp->pg_id
|
|
|
|
#define NOCPU 0xff /* For when we aren't on a CPU. */
|
|
|
|
#define PROC_SLOCK(p) mtx_lock_spin(&(p)->p_slock)
|
|
#define PROC_SUNLOCK(p) mtx_unlock_spin(&(p)->p_slock)
|
|
#define PROC_SLOCK_ASSERT(p, type) mtx_assert(&(p)->p_slock, (type))
|
|
|
|
/* These flags are kept in p_flag. */
|
|
#define P_ADVLOCK 0x00001 /* Process may hold a POSIX advisory lock. */
|
|
#define P_CONTROLT 0x00002 /* Has a controlling terminal. */
|
|
#define P_KTHREAD 0x00004 /* Kernel thread (*). */
|
|
#define P_FOLLOWFORK 0x00008 /* Attach parent debugger to children. */
|
|
#define P_PPWAIT 0x00010 /* Parent is waiting for child to exec/exit. */
|
|
#define P_PROFIL 0x00020 /* Has started profiling. */
|
|
#define P_STOPPROF 0x00040 /* Has thread requesting to stop profiling. */
|
|
#define P_HADTHREADS 0x00080 /* Has had threads (no cleanup shortcuts) */
|
|
#define P_SUGID 0x00100 /* Had set id privileges since last exec. */
|
|
#define P_SYSTEM 0x00200 /* System proc: no sigs, stats or swapping. */
|
|
#define P_SINGLE_EXIT 0x00400 /* Threads suspending should exit, not wait. */
|
|
#define P_TRACED 0x00800 /* Debugged process being traced. */
|
|
#define P_WAITED 0x01000 /* Someone is waiting for us. */
|
|
#define P_WEXIT 0x02000 /* Working on exiting. */
|
|
#define P_EXEC 0x04000 /* Process called exec. */
|
|
#define P_WKILLED 0x08000 /* Killed, go to kernel/user boundary ASAP. */
|
|
#define P_CONTINUED 0x10000 /* Proc has continued from a stopped state. */
|
|
#define P_STOPPED_SIG 0x20000 /* Stopped due to SIGSTOP/SIGTSTP. */
|
|
#define P_STOPPED_TRACE 0x40000 /* Stopped because of tracing. */
|
|
#define P_STOPPED_SINGLE 0x80000 /* Only 1 thread can continue (not to user). */
|
|
#define P_PROTECTED 0x100000 /* Do not kill on memory overcommit. */
|
|
#define P_SIGEVENT 0x200000 /* Process pending signals changed. */
|
|
#define P_SINGLE_BOUNDARY 0x400000 /* Threads should suspend at user boundary. */
|
|
#define P_HWPMC 0x800000 /* Process is using HWPMCs */
|
|
#define P_JAILED 0x1000000 /* Process is in jail. */
|
|
#define P_ORPHAN 0x2000000 /* Orphaned. */
|
|
#define P_INEXEC 0x4000000 /* Process is in execve(). */
|
|
#define P_STATCHILD 0x8000000 /* Child process stopped or exited. */
|
|
#define P_INMEM 0x10000000 /* Loaded into memory. */
|
|
#define P_SWAPPINGOUT 0x20000000 /* Process is being swapped out. */
|
|
#define P_SWAPPINGIN 0x40000000 /* Process is being swapped in. */
|
|
|
|
#define P_STOPPED (P_STOPPED_SIG|P_STOPPED_SINGLE|P_STOPPED_TRACE)
|
|
#define P_SHOULDSTOP(p) ((p)->p_flag & P_STOPPED)
|
|
#define P_KILLED(p) ((p)->p_flag & P_WKILLED)
|
|
|
|
/*
|
|
* These were process status values (p_stat), now they are only used in
|
|
* legacy conversion code.
|
|
*/
|
|
#define SIDL 1 /* Process being created by fork. */
|
|
#define SRUN 2 /* Currently runnable. */
|
|
#define SSLEEP 3 /* Sleeping on an address. */
|
|
#define SSTOP 4 /* Process debugging or suspension. */
|
|
#define SZOMB 5 /* Awaiting collection by parent. */
|
|
#define SWAIT 6 /* Waiting for interrupt. */
|
|
#define SLOCK 7 /* Blocked on a lock. */
|
|
|
|
#define P_MAGIC 0xbeefface
|
|
|
|
#ifdef _KERNEL
|
|
|
|
/* Types and flags for mi_switch(). */
|
|
#define SW_TYPE_MASK 0xff /* First 8 bits are switch type */
|
|
#define SWT_NONE 0 /* Unspecified switch. */
|
|
#define SWT_PREEMPT 1 /* Switching due to preemption. */
|
|
#define SWT_OWEPREEMPT 2 /* Switching due to opepreempt. */
|
|
#define SWT_TURNSTILE 3 /* Turnstile contention. */
|
|
#define SWT_SLEEPQ 4 /* Sleepq wait. */
|
|
#define SWT_SLEEPQTIMO 5 /* Sleepq timeout wait. */
|
|
#define SWT_RELINQUISH 6 /* yield call. */
|
|
#define SWT_NEEDRESCHED 7 /* NEEDRESCHED was set. */
|
|
#define SWT_IDLE 8 /* Switching from the idle thread. */
|
|
#define SWT_IWAIT 9 /* Waiting for interrupts. */
|
|
#define SWT_SUSPEND 10 /* Thread suspended. */
|
|
#define SWT_REMOTEPREEMPT 11 /* Remote processor preempted. */
|
|
#define SWT_REMOTEWAKEIDLE 12 /* Remote processor preempted idle. */
|
|
#define SWT_COUNT 13 /* Number of switch types. */
|
|
/* Flags */
|
|
#define SW_VOL 0x0100 /* Voluntary switch. */
|
|
#define SW_INVOL 0x0200 /* Involuntary switch. */
|
|
#define SW_PREEMPT 0x0400 /* The invol switch is a preemption */
|
|
|
|
/* How values for thread_single(). */
|
|
#define SINGLE_NO_EXIT 0
|
|
#define SINGLE_EXIT 1
|
|
#define SINGLE_BOUNDARY 2
|
|
|
|
#ifdef MALLOC_DECLARE
|
|
MALLOC_DECLARE(M_PARGS);
|
|
MALLOC_DECLARE(M_PGRP);
|
|
MALLOC_DECLARE(M_SESSION);
|
|
MALLOC_DECLARE(M_SUBPROC);
|
|
#endif
|
|
|
|
#define FOREACH_PROC_IN_SYSTEM(p) \
|
|
LIST_FOREACH((p), &allproc, p_list)
|
|
#define FOREACH_THREAD_IN_PROC(p, td) \
|
|
TAILQ_FOREACH((td), &(p)->p_threads, td_plist)
|
|
|
|
#define FIRST_THREAD_IN_PROC(p) TAILQ_FIRST(&(p)->p_threads)
|
|
|
|
/*
|
|
* We use process IDs <= pid_max <= PID_MAX; PID_MAX + 1 must also fit
|
|
* in a pid_t, as it is used to represent "no process group".
|
|
*/
|
|
#define PID_MAX 99999
|
|
#define NO_PID 100000
|
|
extern pid_t pid_max;
|
|
|
|
#define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
|
|
|
|
|
|
#define STOPEVENT(p, e, v) do { \
|
|
if ((p)->p_stops & (e)) { \
|
|
PROC_LOCK(p); \
|
|
stopevent((p), (e), (v)); \
|
|
PROC_UNLOCK(p); \
|
|
} \
|
|
} while (0)
|
|
#define _STOPEVENT(p, e, v) do { \
|
|
PROC_LOCK_ASSERT(p, MA_OWNED); \
|
|
WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, &p->p_mtx.lock_object, \
|
|
"checking stopevent %d", (e)); \
|
|
if ((p)->p_stops & (e)) \
|
|
stopevent((p), (e), (v)); \
|
|
} while (0)
|
|
|
|
/* Lock and unlock a process. */
|
|
#define PROC_LOCK(p) mtx_lock(&(p)->p_mtx)
|
|
#define PROC_TRYLOCK(p) mtx_trylock(&(p)->p_mtx)
|
|
#define PROC_UNLOCK(p) mtx_unlock(&(p)->p_mtx)
|
|
#define PROC_LOCKED(p) mtx_owned(&(p)->p_mtx)
|
|
#define PROC_LOCK_ASSERT(p, type) mtx_assert(&(p)->p_mtx, (type))
|
|
|
|
/* Lock and unlock a process group. */
|
|
#define PGRP_LOCK(pg) mtx_lock(&(pg)->pg_mtx)
|
|
#define PGRP_UNLOCK(pg) mtx_unlock(&(pg)->pg_mtx)
|
|
#define PGRP_LOCKED(pg) mtx_owned(&(pg)->pg_mtx)
|
|
#define PGRP_LOCK_ASSERT(pg, type) mtx_assert(&(pg)->pg_mtx, (type))
|
|
|
|
#define PGRP_LOCK_PGSIGNAL(pg) do { \
|
|
if ((pg) != NULL) \
|
|
PGRP_LOCK(pg); \
|
|
} while (0)
|
|
#define PGRP_UNLOCK_PGSIGNAL(pg) do { \
|
|
if ((pg) != NULL) \
|
|
PGRP_UNLOCK(pg); \
|
|
} while (0)
|
|
|
|
/* Lock and unlock a session. */
|
|
#define SESS_LOCK(s) mtx_lock(&(s)->s_mtx)
|
|
#define SESS_UNLOCK(s) mtx_unlock(&(s)->s_mtx)
|
|
#define SESS_LOCKED(s) mtx_owned(&(s)->s_mtx)
|
|
#define SESS_LOCK_ASSERT(s, type) mtx_assert(&(s)->s_mtx, (type))
|
|
|
|
/* Hold process U-area in memory, normally for ptrace/procfs work. */
|
|
#define PHOLD(p) do { \
|
|
PROC_LOCK(p); \
|
|
_PHOLD(p); \
|
|
PROC_UNLOCK(p); \
|
|
} while (0)
|
|
#define _PHOLD(p) do { \
|
|
PROC_LOCK_ASSERT((p), MA_OWNED); \
|
|
KASSERT(!((p)->p_flag & P_WEXIT) || (p) == curproc, \
|
|
("PHOLD of exiting process")); \
|
|
(p)->p_lock++; \
|
|
if (((p)->p_flag & P_INMEM) == 0) \
|
|
faultin((p)); \
|
|
} while (0)
|
|
#define PROC_ASSERT_HELD(p) do { \
|
|
KASSERT((p)->p_lock > 0, ("process not held")); \
|
|
} while (0)
|
|
|
|
#define PRELE(p) do { \
|
|
PROC_LOCK((p)); \
|
|
_PRELE((p)); \
|
|
PROC_UNLOCK((p)); \
|
|
} while (0)
|
|
#define _PRELE(p) do { \
|
|
PROC_LOCK_ASSERT((p), MA_OWNED); \
|
|
PROC_ASSERT_HELD(p); \
|
|
(--(p)->p_lock); \
|
|
if (((p)->p_flag & P_WEXIT) && (p)->p_lock == 0) \
|
|
wakeup(&(p)->p_lock); \
|
|
} while (0)
|
|
#define PROC_ASSERT_NOT_HELD(p) do { \
|
|
KASSERT((p)->p_lock == 0, ("process held")); \
|
|
} while (0)
|
|
|
|
/* Check whether a thread is safe to be swapped out. */
|
|
#define thread_safetoswapout(td) ((td)->td_flags & TDF_CANSWAP)
|
|
|
|
/* Control whether or not it is safe for curthread to sleep. */
|
|
#define THREAD_NO_SLEEPING() do { \
|
|
KASSERT(!(curthread->td_pflags & TDP_NOSLEEPING), \
|
|
("nested no sleeping")); \
|
|
curthread->td_pflags |= TDP_NOSLEEPING; \
|
|
} while (0)
|
|
|
|
#define THREAD_SLEEPING_OK() do { \
|
|
KASSERT((curthread->td_pflags & TDP_NOSLEEPING), \
|
|
("nested sleeping ok")); \
|
|
curthread->td_pflags &= ~TDP_NOSLEEPING; \
|
|
} while (0)
|
|
|
|
#define PIDHASH(pid) (&pidhashtbl[(pid) & pidhash])
|
|
extern LIST_HEAD(pidhashhead, proc) *pidhashtbl;
|
|
extern u_long pidhash;
|
|
#define TIDHASH(tid) (&tidhashtbl[(tid) & tidhash])
|
|
extern LIST_HEAD(tidhashhead, thread) *tidhashtbl;
|
|
extern u_long tidhash;
|
|
extern struct rwlock tidhash_lock;
|
|
|
|
#define PGRPHASH(pgid) (&pgrphashtbl[(pgid) & pgrphash])
|
|
extern LIST_HEAD(pgrphashhead, pgrp) *pgrphashtbl;
|
|
extern u_long pgrphash;
|
|
|
|
extern struct sx allproc_lock;
|
|
extern struct sx proctree_lock;
|
|
extern struct mtx ppeers_lock;
|
|
extern struct proc proc0; /* Process slot for swapper. */
|
|
extern struct thread thread0; /* Primary thread in proc0. */
|
|
extern struct vmspace vmspace0; /* VM space for proc0. */
|
|
extern int hogticks; /* Limit on kernel cpu hogs. */
|
|
extern int lastpid;
|
|
extern int nprocs, maxproc; /* Current and max number of procs. */
|
|
extern int maxprocperuid; /* Max procs per uid. */
|
|
extern u_long ps_arg_cache_limit;
|
|
|
|
LIST_HEAD(proclist, proc);
|
|
TAILQ_HEAD(procqueue, proc);
|
|
TAILQ_HEAD(threadqueue, thread);
|
|
extern struct proclist allproc; /* List of all processes. */
|
|
extern struct proclist zombproc; /* List of zombie processes. */
|
|
extern struct proc *initproc, *pageproc; /* Process slots for init, pager. */
|
|
|
|
extern struct uma_zone *proc_zone;
|
|
|
|
struct proc *pfind(pid_t); /* Find process by id. */
|
|
struct proc *pfind_locked(pid_t pid);
|
|
struct pgrp *pgfind(pid_t); /* Find process group by id. */
|
|
struct proc *zpfind(pid_t); /* Find zombie process by id. */
|
|
|
|
/*
|
|
* pget() flags.
|
|
*/
|
|
#define PGET_HOLD 0x00001 /* Hold the process. */
|
|
#define PGET_CANSEE 0x00002 /* Check against p_cansee(). */
|
|
#define PGET_CANDEBUG 0x00004 /* Check against p_candebug(). */
|
|
#define PGET_ISCURRENT 0x00008 /* Check that the found process is current. */
|
|
#define PGET_NOTWEXIT 0x00010 /* Check that the process is not in P_WEXIT. */
|
|
#define PGET_NOTINEXEC 0x00020 /* Check that the process is not in P_INEXEC. */
|
|
#define PGET_NOTID 0x00040 /* Do not assume tid if pid > PID_MAX. */
|
|
|
|
#define PGET_WANTREAD (PGET_HOLD | PGET_CANDEBUG | PGET_NOTWEXIT)
|
|
|
|
int pget(pid_t pid, int flags, struct proc **pp);
|
|
|
|
void ast(struct trapframe *framep);
|
|
struct thread *choosethread(void);
|
|
int cr_cansignal(struct ucred *cred, struct proc *proc, int signum);
|
|
int enterpgrp(struct proc *p, pid_t pgid, struct pgrp *pgrp,
|
|
struct session *sess);
|
|
int enterthispgrp(struct proc *p, struct pgrp *pgrp);
|
|
void faultin(struct proc *p);
|
|
void fixjobc(struct proc *p, struct pgrp *pgrp, int entering);
|
|
int fork1(struct thread *, int, int, struct proc **, int *, int);
|
|
void fork_exit(void (*)(void *, struct trapframe *), void *,
|
|
struct trapframe *);
|
|
void fork_return(struct thread *, struct trapframe *);
|
|
int inferior(struct proc *p);
|
|
void kern_yield(int);
|
|
void kick_proc0(void);
|
|
int leavepgrp(struct proc *p);
|
|
int maybe_preempt(struct thread *td);
|
|
void maybe_yield(void);
|
|
void mi_switch(int flags, struct thread *newtd);
|
|
int p_candebug(struct thread *td, struct proc *p);
|
|
int p_cansee(struct thread *td, struct proc *p);
|
|
int p_cansched(struct thread *td, struct proc *p);
|
|
int p_cansignal(struct thread *td, struct proc *p, int signum);
|
|
int p_canwait(struct thread *td, struct proc *p);
|
|
struct pargs *pargs_alloc(int len);
|
|
void pargs_drop(struct pargs *pa);
|
|
void pargs_hold(struct pargs *pa);
|
|
int proc_getargv(struct thread *td, struct proc *p, struct sbuf *sb);
|
|
int proc_getenvv(struct thread *td, struct proc *p, struct sbuf *sb);
|
|
void procinit(void);
|
|
void proc_linkup0(struct proc *p, struct thread *td);
|
|
void proc_linkup(struct proc *p, struct thread *td);
|
|
void proc_reap(struct thread *td, struct proc *p, int *status, int options);
|
|
void proc_reparent(struct proc *child, struct proc *newparent);
|
|
struct pstats *pstats_alloc(void);
|
|
void pstats_fork(struct pstats *src, struct pstats *dst);
|
|
void pstats_free(struct pstats *ps);
|
|
int securelevel_ge(struct ucred *cr, int level);
|
|
int securelevel_gt(struct ucred *cr, int level);
|
|
void sess_hold(struct session *);
|
|
void sess_release(struct session *);
|
|
int setrunnable(struct thread *);
|
|
void setsugid(struct proc *p);
|
|
int should_yield(void);
|
|
int sigonstack(size_t sp);
|
|
void sleepinit(void);
|
|
void stopevent(struct proc *, u_int, u_int);
|
|
struct thread *tdfind(lwpid_t, pid_t);
|
|
void threadinit(void);
|
|
void tidhash_add(struct thread *);
|
|
void tidhash_remove(struct thread *);
|
|
void cpu_idle(int);
|
|
int cpu_idle_wakeup(int);
|
|
extern void (*cpu_idle_hook)(void); /* Hook to machdep CPU idler. */
|
|
void cpu_switch(struct thread *, struct thread *, struct mtx *);
|
|
void cpu_throw(struct thread *, struct thread *) __dead2;
|
|
void unsleep(struct thread *);
|
|
void userret(struct thread *, struct trapframe *);
|
|
|
|
void cpu_exit(struct thread *);
|
|
void exit1(struct thread *, int) __dead2;
|
|
struct syscall_args;
|
|
int cpu_fetch_syscall_args(struct thread *td, struct syscall_args *sa);
|
|
void cpu_fork(struct thread *, struct proc *, struct thread *, int);
|
|
void cpu_set_fork_handler(struct thread *, void (*)(void *), void *);
|
|
void cpu_set_syscall_retval(struct thread *, int);
|
|
void cpu_set_upcall(struct thread *td, struct thread *td0);
|
|
void cpu_set_upcall_kse(struct thread *, void (*)(void *), void *,
|
|
stack_t *);
|
|
int cpu_set_user_tls(struct thread *, void *tls_base);
|
|
void cpu_thread_alloc(struct thread *);
|
|
void cpu_thread_clean(struct thread *);
|
|
void cpu_thread_exit(struct thread *);
|
|
void cpu_thread_free(struct thread *);
|
|
void cpu_thread_swapin(struct thread *);
|
|
void cpu_thread_swapout(struct thread *);
|
|
struct thread *thread_alloc(int pages);
|
|
int thread_alloc_stack(struct thread *, int pages);
|
|
void thread_exit(void) __dead2;
|
|
void thread_free(struct thread *td);
|
|
void thread_link(struct thread *td, struct proc *p);
|
|
void thread_reap(void);
|
|
int thread_single(int how);
|
|
void thread_single_end(void);
|
|
void thread_stash(struct thread *td);
|
|
void thread_stopped(struct proc *p);
|
|
void childproc_stopped(struct proc *child, int reason);
|
|
void childproc_continued(struct proc *child);
|
|
void childproc_exited(struct proc *child);
|
|
int thread_suspend_check(int how);
|
|
void thread_suspend_switch(struct thread *);
|
|
void thread_suspend_one(struct thread *td);
|
|
void thread_unlink(struct thread *td);
|
|
void thread_unsuspend(struct proc *p);
|
|
int thread_unsuspend_one(struct thread *td);
|
|
void thread_unthread(struct thread *td);
|
|
void thread_wait(struct proc *p);
|
|
struct thread *thread_find(struct proc *p, lwpid_t tid);
|
|
|
|
static __inline int
|
|
curthread_pflags_set(int flags)
|
|
{
|
|
struct thread *td;
|
|
int save;
|
|
|
|
td = curthread;
|
|
save = ~flags | (td->td_pflags & flags);
|
|
td->td_pflags |= flags;
|
|
return (save);
|
|
}
|
|
|
|
static __inline void
|
|
curthread_pflags_restore(int save)
|
|
{
|
|
|
|
curthread->td_pflags &= save;
|
|
}
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_SYS_PROC_H_ */
|