コード例 #1
0
ファイル: os.c プロジェクト: 8l/inferno
static void
pfree(Proc *p)
{
	Osenv *e;

	lock(&procs.l);
	if(p->prev)
		p->prev->next = p->next;
	else
		procs.head = p->next;

	if(p->next)
		p->next->prev = p->prev;
	else
		procs.tail = p->prev;
	unlock(&procs.l);

	e = p->env;
	if(e != nil) {
		closefgrp(e->fgrp);
		closepgrp(e->pgrp);
		closeegrp(e->egrp);
		closesigs(e->sigs);
	}
	free(e->user);
	free(p->prog);
	CloseHandle((HANDLE)p->os);
	free(p);
}
コード例 #2
0
ファイル: proc.c プロジェクト: 8l/inferno
void
pexit(char*, int)
{
	Osenv *o;

	up->alarm = 0;

	o = up->env;
	if(o != nil){
		closefgrp(o->fgrp);
		closepgrp(o->pgrp);
		closeegrp(o->egrp);
		closesigs(o->sigs);
	}

	/* Sched must not loop for this lock */
	lock(&procalloc);

/*
	edfstop(up);
*/
	up->state = Moribund;
	sched();
	panic("pexit");
}
コード例 #3
0
ファイル: os.c プロジェクト: 8l/inferno
void
pexit(char *msg, int t)
{
	Osenv *e;
	void *kstack;

	lock(&procs.l);
	if(up->prev)
		up->prev->next = up->next;
	else
		procs.head = up->next;

	if(up->next)
		up->next->prev = up->prev;
	else
		procs.tail = up->prev;
	unlock(&procs.l);

	if(0)
		print("pexit: %s: %s\n", up->text, msg);

	e = up->env;
	if(e != nil) {
		closefgrp(e->fgrp);
		closepgrp(e->pgrp);
		closeegrp(e->egrp);
		closesigs(e->sigs);
	}
	kstack = up->kstack;
	free(up->prog);
	free(up);
	if(kstack != nil)
		stackfreeandexit(kstack);
}
コード例 #4
0
ファイル: kproc-libuv.c プロジェクト: AndreasBriese/node9
/* kproc exit */
void
pexit(char *msg, int t)
{
	Osenv *e;
	kproc_t* p;
	Osdep *os;

	USED(t);

    /* get our process context and remove ourselves from proc list
     */
    trace(TRACE_DEBUG, "kernel/pexit: process shutdown");
    
	p = (kproc_t*)up;

	lock(&procs.l);
	if(p->prev)
		p->prev->next = p->next;
	else
		procs.head = p->next;

	if(p->next)
		p->next->prev = p->prev;
	else
		procs.tail = p->prev;
	unlock(&procs.l);

	if(0)
		print("pexit: %s: %s\n", p->text, msg);

    trace(TRACE_DEBUG, "kernel/pexit: releasing resources"); 
    
    /* release name,fid and env groups */
	e = p->env;
	if(e != nil) {
    trace(TRACE_DEBUG, "kernel/pexit: closing fgrp"); 
		closefgrp(e->fgrp);
    trace(TRACE_DEBUG, "kernel/pexit: closing pgrp"); 
		closepgrp(e->pgrp);
    trace(TRACE_DEBUG, "kernel/pexit: closing egrp"); 
		closeegrp(e->egrp);
    trace(TRACE_DEBUG, "kernel/pexit: closing signatures"); 
		closesigs(e->sigs);
    trace(TRACE_DEBUG, "kernel/pexit: freeing user");
		free(e->user);
	}
	
    /* release os dependencies */
	os = p->os;
    if(os != nil){
        trace(TRACE_DEBUG, "kernel/pexit: deleting semaphore"); 
		uv_sem_destroy(&os->sem);
        trace(TRACE_DEBUG, "kernel/pexit: freeing os dependencies"); 
		free(os);
	}
       
    /* release the process itself */
    trace(TRACE_DEBUG, "kernel/pexit: freeing process"); 
	free(p);
}
コード例 #5
0
ファイル: dis.c プロジェクト: 8l/inferno
void
delprog(Prog *p, char *msg)
{
	Osenv *o;
	Prog **ph;

	tellsomeone(p, msg);	/* call before being removed from prog list */

	o = p->osenv;
	release();
	closepgrp(o->pgrp);
	closefgrp(o->fgrp);
	closeegrp(o->egrp);
	closesigs(o->sigs);
	acquire();

	delgrp(p);

	if(p->prev)
		p->prev->next = p->next;
	else
		isched.head = p->next;

	if(p->next)
		p->next->prev = p->prev;
	else
		isched.tail = p->prev;

	ph = pidlook(p->pid);
	if(*ph == nil)
		panic("lost pid");
	*ph = p->pidlink;

	if(p == isched.runhd) {
		isched.runhd = p->link;
		if(p->link == nil)
			isched.runtl = nil;
	}
	p->state = 0xdeadbeef;
	free(o->user);
	free(p->killstr);
	free(p->exstr);
	free(p);
}
コード例 #6
0
ファイル: proc.c プロジェクト: grobe0ba/plan9front
void
pexit(char *exitstr, int freemem)
{
	Proc *p;
	Segment **s, **es;
	long utime, stime;
	Waitq *wq;
	Fgrp *fgrp;
	Egrp *egrp;
	Rgrp *rgrp;
	Pgrp *pgrp;
	Chan *dot;
	void (*pt)(Proc*, int, vlong);

	up->alarm = 0;
	if(up->tt != nil)
		timerdel(up);
	pt = proctrace;
	if(pt != nil)
		pt(up, SDead, 0);

	/* nil out all the resources under lock (free later) */
	qlock(&up->debug);
	fgrp = up->fgrp;
	up->fgrp = nil;
	egrp = up->egrp;
	up->egrp = nil;
	rgrp = up->rgrp;
	up->rgrp = nil;
	pgrp = up->pgrp;
	up->pgrp = nil;
	dot = up->dot;
	up->dot = nil;
	qunlock(&up->debug);

	if(fgrp != nil)
		closefgrp(fgrp);
	if(egrp != nil)
		closeegrp(egrp);
	if(rgrp != nil)
		closergrp(rgrp);
	if(dot != nil)
		cclose(dot);
	if(pgrp != nil)
		closepgrp(pgrp);

	/*
	 * if not a kernel process and have a parent,
	 * do some housekeeping.
	 */
	if(up->kp == 0 && up->parentpid != 0) {
		wq = smalloc(sizeof(Waitq));
		wq->w.pid = up->pid;
		utime = up->time[TUser] + up->time[TCUser];
		stime = up->time[TSys] + up->time[TCSys];
		wq->w.time[TUser] = tk2ms(utime);
		wq->w.time[TSys] = tk2ms(stime);
		wq->w.time[TReal] = tk2ms(MACHP(0)->ticks - up->time[TReal]);
		if(exitstr != nil && exitstr[0])
			snprint(wq->w.msg, sizeof(wq->w.msg), "%s %lud: %s", up->text, up->pid, exitstr);
		else
			wq->w.msg[0] = '\0';

		p = up->parent;
		lock(&p->exl);
		/*
		 * Check that parent is still alive.
		 */
		if(p->pid == up->parentpid && p->state != Broken) {
			p->nchild--;
			p->time[TCUser] += utime;
			p->time[TCSys] += stime;
			/*
			 * If there would be more than 128 wait records
			 * processes for my parent, then don't leave a wait
			 * record behind.  This helps prevent badly written
			 * daemon processes from accumulating lots of wait
			 * records.
		 	 */
			if(p->nwait < 128) {
				wq->next = p->waitq;
				p->waitq = wq;
				p->nwait++;
				wq = nil;
				wakeup(&p->waitr);
			}
		}
		unlock(&p->exl);
		if(wq != nil)
			free(wq);
	}
	else if(up->kp == 0 && up->parent == nil){
		if(exitstr == nil)
			exitstr = "unknown";
		panic("boot process died: %s", exitstr);
	}

	if(!freemem)
		addbroken(up);

	qlock(&up->seglock);
	es = &up->seg[NSEG];
	for(s = up->seg; s < es; s++) {
		if(*s != nil) {
			putseg(*s);
			*s = nil;
		}
	}
	qunlock(&up->seglock);

	lock(&up->exl);		/* Prevent my children from leaving waits */
	pidfree(up);
	up->pid = 0;
	wakeup(&up->waitr);
	unlock(&up->exl);

	while((wq = up->waitq) != nil){
		up->waitq = wq->next;
		free(wq);
	}

	/* release debuggers */
	qlock(&up->debug);
	if(up->pdbg != nil) {
		wakeup(&up->pdbg->sleep);
		up->pdbg = nil;
	}
	if(up->syscalltrace != nil) {
		free(up->syscalltrace);
		up->syscalltrace = nil;
	}
	qunlock(&up->debug);

	/* Sched must not loop for these locks */
	lock(&procalloc);
	lock(&palloc);

	edfstop(up);
	up->state = Moribund;
	sched();
	panic("pexit");
}
コード例 #7
0
ファイル: proc.c プロジェクト: npe9/harvey
void
pexit(char *exitstr, int freemem)
{
	Mach *m = machp();
	Proc *p;
	Segment **s, **es;
	int32_t utime, stime;
	Waitq *wq, *f, *next;
	Fgrp *fgrp;
	Egrp *egrp;
	Rgrp *rgrp;
	Pgrp *pgrp;
	Chan *dot;

	if(0 && m->externup->nfullq > 0)
		iprint(" %s=%d", m->externup->text, m->externup->nfullq);
	if(0 && m->externup->nicc > 0)
		iprint(" [%s nicc %ud tctime %ulld actime %ulld]\n",
			m->externup->text, m->externup->nicc, m->externup->tctime, m->externup->actime);
	if(m->externup->syscalltrace != nil)
		free(m->externup->syscalltrace);
	m->externup->syscalltrace = nil;
	m->externup->alarm = 0;

	if (m->externup->tt)
		timerdel(m->externup);
	if(m->externup->trace)
		proctrace(m->externup, SDead, 0);

	/* nil out all the resources under lock (free later) */
	qlock(&m->externup->debug);
	fgrp = m->externup->fgrp;
	m->externup->fgrp = nil;
	egrp = m->externup->egrp;
	m->externup->egrp = nil;
	rgrp = m->externup->rgrp;
	m->externup->rgrp = nil;
	pgrp = m->externup->pgrp;
	m->externup->pgrp = nil;
	dot = m->externup->dot;
	m->externup->dot = nil;
	qunlock(&m->externup->debug);


	if(fgrp)
		closefgrp(fgrp);
	if(egrp)
		closeegrp(egrp);
	if(rgrp)
		closergrp(rgrp);
	if(dot)
		cclose(dot);
	if(pgrp)
		closepgrp(pgrp);

	/*
	 * if not a kernel process and have a parent,
	 * do some housekeeping.
	 */
	if(m->externup->kp == 0) {
		p = m->externup->parent;
		if(p == 0) {
			if(exitstr == 0)
				exitstr = "unknown";
			//die("bootprocessdeath");
			panic("boot process died: %s", exitstr);
		}

		while(waserror())
			;

		wq = smalloc(sizeof(Waitq));
		poperror();

		wq->w.pid = m->externup->pid;
		utime = m->externup->time[TUser] + m->externup->time[TCUser];
		stime = m->externup->time[TSys] + m->externup->time[TCSys];
		wq->w.time[TUser] = tk2ms(utime);
		wq->w.time[TSys] = tk2ms(stime);
		wq->w.time[TReal] = tk2ms(sys->machptr[0]->ticks - m->externup->time[TReal]);
		if(exitstr && exitstr[0])
			snprint(wq->w.msg, sizeof(wq->w.msg), "%s %d: %s",
				m->externup->text, m->externup->pid, exitstr);
		else
			wq->w.msg[0] = '\0';

		lock(&p->exl);
		/*
		 * Check that parent is still alive.
		 */
		if(p->pid == m->externup->parentpid && p->state != Broken) {
			p->nchild--;
			p->time[TCUser] += utime;
			p->time[TCSys] += stime;
			/*
			 * If there would be more than 128 wait records
			 * processes for my parent, then don't leave a wait
			 * record behind.  This helps prevent badly written
			 * daemon processes from accumulating lots of wait
			 * records.
		 	 */
			if(p->nwait < 128) {
				wq->next = p->waitq;
				p->waitq = wq;
				p->nwait++;
				wq = nil;
				wakeup(&p->waitr);
			}
		}
		unlock(&p->exl);
		if(wq)
			free(wq);
	}

	if(!freemem)
		addbroken(m->externup);

	qlock(&m->externup->seglock);
	es = &m->externup->seg[NSEG];
	for(s = m->externup->seg; s < es; s++) {
		if(*s) {
			putseg(*s);
			*s = 0;
		}
	}
	qunlock(&m->externup->seglock);

	lock(&m->externup->exl);		/* Prevent my children from leaving waits */
	psunhash(m->externup);
	m->externup->pid = 0;
	wakeup(&m->externup->waitr);
	unlock(&m->externup->exl);

	for(f = m->externup->waitq; f; f = next) {
		next = f->next;
		free(f);
	}

	/* release debuggers */
	qlock(&m->externup->debug);
	if(m->externup->pdbg) {
		wakeup(&m->externup->pdbg->sleep);
		m->externup->pdbg = 0;
	}
	qunlock(&m->externup->debug);

	/* Sched must not loop for these locks */
	lock(&procalloc);
	lock(&pga);

	stopac();
	edfstop(m->externup);
	m->externup->state = Moribund;
	sched();
	panic("pexit");
}
コード例 #8
0
ファイル: sysproc.c プロジェクト: srk-cmu/9problems
uintptr
sysrfork(va_list list)
{
	Proc *p;
	int n, i;
	Fgrp *ofg;
	Pgrp *opg;
	Rgrp *org;
	Egrp *oeg;
	ulong pid, flag;
	Mach *wm;

	flag = va_arg(list, ulong);
	/* Check flags before we commit */
	if((flag & (RFFDG|RFCFDG)) == (RFFDG|RFCFDG))
		error(Ebadarg);
	if((flag & (RFNAMEG|RFCNAMEG)) == (RFNAMEG|RFCNAMEG))
		error(Ebadarg);
	if((flag & (RFENVG|RFCENVG)) == (RFENVG|RFCENVG))
		error(Ebadarg);

	if((flag&RFPROC) == 0) {
		if(flag & (RFMEM|RFNOWAIT))
			error(Ebadarg);
		if(flag & (RFFDG|RFCFDG)) {
			ofg = up->fgrp;
			if(flag & RFFDG)
				up->fgrp = dupfgrp(ofg);
			else
				up->fgrp = dupfgrp(nil);
			closefgrp(ofg);
		}
		if(flag & (RFNAMEG|RFCNAMEG)) {
			opg = up->pgrp;
			up->pgrp = newpgrp();
			if(flag & RFNAMEG)
				pgrpcpy(up->pgrp, opg);
			/* inherit noattach */
			up->pgrp->noattach = opg->noattach;
			closepgrp(opg);
		}
		if(flag & RFNOMNT)
			up->pgrp->noattach = 1;
		if(flag & RFREND) {
			org = up->rgrp;
			up->rgrp = newrgrp();
			closergrp(org);
		}
		if(flag & (RFENVG|RFCENVG)) {
			oeg = up->egrp;
			up->egrp = smalloc(sizeof(Egrp));
			up->egrp->ref = 1;
			if(flag & RFENVG)
				envcpy(up->egrp, oeg);
			closeegrp(oeg);
		}
		if(flag & RFNOTEG)
			up->noteid = pidalloc(0);
		return 0;
	}

	p = newproc();

	p->scallnr = up->scallnr;
	p->s = up->s;
	p->nerrlab = 0;
	p->slash = up->slash;
	p->dot = up->dot;
	incref(p->dot);

	memmove(p->note, up->note, sizeof(p->note));
	p->privatemem = up->privatemem;
	p->noswap = up->noswap;
	p->nnote = up->nnote;
	p->notified = 0;
	p->lastnote = up->lastnote;
	p->notify = up->notify;
	p->ureg = up->ureg;
	p->dbgreg = 0;

	/* Abort the child process on error */
	if(waserror()){
		p->kp = 1;
		kprocchild(p, abortion, 0);
		ready(p);
		nexterror();
	}

	/* Make a new set of memory segments */
	n = flag & RFMEM;
	qlock(&p->seglock);
	if(waserror()){
		qunlock(&p->seglock);
		nexterror();
	}
	for(i = 0; i < NSEG; i++)
		if(up->seg[i] != nil)
			p->seg[i] = dupseg(up->seg, i, n);
	qunlock(&p->seglock);
	poperror();

	/* File descriptors */
	if(flag & (RFFDG|RFCFDG)) {
		if(flag & RFFDG)
			p->fgrp = dupfgrp(up->fgrp);
		else
			p->fgrp = dupfgrp(nil);
	}
	else {
		p->fgrp = up->fgrp;
		incref(p->fgrp);
	}

	/* Process groups */
	if(flag & (RFNAMEG|RFCNAMEG)) {
		p->pgrp = newpgrp();
		if(flag & RFNAMEG)
			pgrpcpy(p->pgrp, up->pgrp);
		/* inherit noattach */
		p->pgrp->noattach = up->pgrp->noattach;
	}
	else {
		p->pgrp = up->pgrp;
		incref(p->pgrp);
	}
	if(flag & RFNOMNT)
		p->pgrp->noattach = 1;

	if(flag & RFREND)
		p->rgrp = newrgrp();
	else {
		incref(up->rgrp);
		p->rgrp = up->rgrp;
	}

	/* Environment group */
	if(flag & (RFENVG|RFCENVG)) {
		p->egrp = smalloc(sizeof(Egrp));
		p->egrp->ref = 1;
		if(flag & RFENVG)
			envcpy(p->egrp, up->egrp);
	}
	else {
		p->egrp = up->egrp;
		incref(p->egrp);
	}
	p->hang = up->hang;
	p->procmode = up->procmode;
	if(up->procctl == Proc_tracesyscall)
		p->procctl = Proc_tracesyscall;

	poperror();	/* abortion */

	/* Craft a return frame which will cause the child to pop out of
	 * the scheduler in user mode with the return register zero
	 */
	forkchild(p, up->dbgreg);

	p->parent = up;
	if((flag&RFNOWAIT) == 0){
		p->parentpid = up->pid;
		lock(&up->exl);
		up->nchild++;
		unlock(&up->exl);
	}
	if((flag&RFNOTEG) == 0)
		p->noteid = up->noteid;

	pid = p->pid;
	memset(p->time, 0, sizeof(p->time));
	p->time[TReal] = MACHP(0)->ticks;

	kstrdup(&p->text, up->text);
	kstrdup(&p->user, up->user);

	procfork(p);

	/*
	 *  since the bss/data segments are now shareable,
	 *  any mmu info about this process is now stale
	 *  (i.e. has bad properties) and has to be discarded.
	 */
	flushmmu();
	p->basepri = up->basepri;
	p->priority = up->basepri;
	p->fixedpri = up->fixedpri;
	p->mp = up->mp;
	wm = up->wired;
	if(wm)
		procwired(p, wm->machno);
	ready(p);
	sched();
	return pid;
}