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Continue switching library over to pthreads when possible.

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Tprimes works on Linux 2.6.  You can only have 128 procs
though.
This commit is contained in:
rsc 2004-09-17 03:34:32 +00:00
parent 06bb4ed20d
commit bcf527a98e
15 changed files with 146 additions and 561 deletions
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28
src/libthread/sched.c
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@ -36,7 +36,6 @@ _schedinit(void *arg)
unlock(&p->lock);
while(_setlabel(&p->sched))
;
malloc(10);
_threaddebug(DBGSCHED, "top of schedinit, _threadexitsallstatus=%p", _threadexitsallstatus);
if(_threadexitsallstatus)
_exits(_threadexitsallstatus);
@ -148,12 +147,10 @@ relock:
_threaddebug(DBGSCHED, "sleeping for more work (%d threads)", p->nthreads);
q->asleep = 1;
unlock(&p->readylock);
while(rendezvous((ulong)q, 0) == ~0){
if(_threadexitsallstatus)
_exits(_threadexitsallstatus);
}
/* lock picked up from _threadready */
p->rend.l = &p->readylock;
_procsleep(&p->rend);
if(_threadexitsallstatus)
_exits(_threadexitsallstatus);
}
t = q->head;
q->head = t->next;
@ -185,18 +182,15 @@ _sched(void)
Resched:
p = _threadgetproc();
//fprint(2, "p %p\n", p);
malloc(10);
if((t = p->thread) != nil){
needstack(512);
// _threaddebug(DBGSCHED, "pausing, state=%s set %p goto %p",
// psstate(t->state), &t->sched, &p->sched);
print("swap\n");
if(_setlabel(&t->sched)==0)
_gotolabel(&p->sched);
_threadstacklimit(t->stk, t->stk+t->stksize);
return p->nsched++;
}else{
malloc(10);
t = runthread(p);
if(t == nil){
_threaddebug(DBGSCHED, "all threads gone; exiting");
@ -211,8 +205,6 @@ malloc(10);
}
t->state = Running;
t->nextstate = Ready;
malloc(10);
print("gotolabel\n");
_gotolabel(&t->sched);
for(;;);
}
@ -253,13 +245,11 @@ _threadready(Thread *t)
assert(q->asleep == 1);
q->asleep = 0;
/* lock passes to runthread */
_threaddebug(DBGSCHED, "waking process %d", t->proc->pid);
while(rendezvous((ulong)q, 0) == ~0){
if(_threadexitsallstatus)
_exits(_threadexitsallstatus);
}
}else
unlock(&t->proc->readylock);
_procwakeup(&t->proc->rend);
}
unlock(&t->proc->readylock);
if(_threadexitsallstatus)
_exits(_threadexitsallstatus);
}
void