Proc*
newproc(void)
{
char msg[64];
Proc *p;
lock(&procalloc);
for(;;) {
if(p = procalloc.free)
break;
snprint(msg, sizeof msg, "no procs; %s forking",
up? up->text: "kernel");
unlock(&procalloc);
resrcwait(msg);
lock(&procalloc);
}
procalloc.free = p->qnext;
unlock(&procalloc);
p->state = Scheding;
p->psstate = "New";
p->mach = 0;
p->qnext = 0;
p->nchild = 0;
p->nwait = 0;
p->waitq = 0;
p->parent = 0;
p->pgrp = 0;
p->egrp = 0;
p->fgrp = 0;
p->rgrp = 0;
p->pdbg = 0;
p->fpstate = FPinit;
p->kp = 0;
if(up && up->procctl == Proc_tracesyscall)
p->procctl = Proc_tracesyscall;
else
p->procctl = 0;
p->syscalltrace = 0;
p->notepending = 0;
p->ureg = 0;
p->privatemem = 0;
p->noswap = 0;
p->errstr = p->errbuf0;
p->syserrstr = p->errbuf1;
p->errbuf0[0] = '\0';
p->errbuf1[0] = '\0';
p->nlocks.ref = 0;
p->delaysched = 0;
p->trace = 0;
kstrdup(&p->user, "*nouser");
kstrdup(&p->text, "*notext");
kstrdup(&p->args, "");
p->nargs = 0;
p->setargs = 0;
memset(p->seg, 0, sizeof p->seg);
p->pid = incref(&pidalloc);
pidhash(p);
p->noteid = incref(¬eidalloc);
if(p->pid==0 || p->noteid==0)
panic("pidalloc");
if(p->kstack == 0)
p->kstack = smalloc(KSTACK);
/* sched params */
p->mp = 0;
p->wired = 0;
procpriority(p, PriNormal, 0);
p->cpu = 0;
p->lastupdate = MACHP(0)->ticks*Scaling;
p->edf = nil;
return p;
}
Proc*
newproc(void)
{
char msg[64];
Proc *p;
lock(&procalloc);
while((p = procalloc.free) == nil) {
unlock(&procalloc);
snprint(msg, sizeof msg, "no procs; %s forking",
up? up->text: "kernel");
/*
* the situation is unlikely to heal itself.
* dump the proc table and restart by default.
* *noprocspersist in plan9.ini will yield the old
* behaviour of trying forever.
*/
if(getconf("*noprocspersist") == nil)
noprocpanic(msg);
resrcwait(msg);
lock(&procalloc);
}
procalloc.free = p->qnext;
unlock(&procalloc);
p->state = Scheding;
p->psstate = "New";
p->mach = 0;
p->qnext = 0;
p->nchild = 0;
p->nwait = 0;
p->waitq = 0;
p->parent = 0;
p->pgrp = 0;
p->egrp = 0;
p->fgrp = 0;
p->rgrp = 0;
p->pdbg = 0;
p->fpstate = FPinit;
p->kp = 0;
if(up && up->procctl == Proc_tracesyscall)
p->procctl = Proc_tracesyscall;
else
p->procctl = 0;
p->syscalltrace = 0;
p->notepending = 0;
p->ureg = 0;
p->privatemem = 0;
p->noswap = 0;
p->errstr = p->errbuf0;
p->syserrstr = p->errbuf1;
p->errbuf0[0] = '\0';
p->errbuf1[0] = '\0';
p->nlocks.ref = 0;
p->delaysched = 0;
p->trace = 0;
kstrdup(&p->user, "*nouser");
kstrdup(&p->text, "*notext");
kstrdup(&p->args, "");
p->nargs = 0;
p->setargs = 0;
memset(p->seg, 0, sizeof p->seg);
p->pid = incref(&pidalloc);
pidhash(p);
p->noteid = incref(¬eidalloc);
if(p->pid==0 || p->noteid==0)
panic("pidalloc");
if(p->kstack == 0)
p->kstack = smalloc(KSTACK);
/* sched params */
p->mp = 0;
p->wired = 0;
procpriority(p, PriNormal, 0);
p->cpu = 0;
p->lastupdate = MACHP(0)->ticks*Scaling;
p->edf = nil;
return p;
}
