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kernel: cleanup qlock.c to use nil instead of 0 for pointers

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This commit is contained in:
cinap_lenrek 2015-08-02 05:36:35 +02:00
parent dd96b1d965
commit 27445c5768
1 changed files with 19 additions and 19 deletions
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38
sys/src/9/port/qlock.c
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@ -24,7 +24,7 @@ eqlock(QLock *q)
print("eqlock: %#p: ilockdepth %d\n", getcallerpc(&q), m->ilockdepth);
if(up != nil && up->nlocks)
print("eqlock: %#p: nlocks %d\n", getcallerpc(&q), up->nlocks);
if(up != nil && up->eql)
if(up != nil && up->eql != nil)
print("eqlock: %#p: eql %p\n", getcallerpc(&q), up->eql);
if(q->use.key == 0x55555555)
panic("eqlock: q %#p, key 5*", q);
@ -36,7 +36,7 @@ eqlock(QLock *q)
unlock(&q->use);
return;
}
if(up == 0)
if(up == nil)
panic("eqlock");
if(up->notepending){
up->notepending = 0;
@ -45,22 +45,22 @@ eqlock(QLock *q)
}
rwstats.qlockq++;
p = q->tail;
if(p == 0)
if(p == nil)
q->head = up;
else
p->qnext = up;
q->tail = up;
up->eql = q;
up->qnext = 0;
up->qnext = nil;
up->qpc = getcallerpc(&q);
up->state = Queueing;
unlock(&q->use);
sched();
if(up->eql == 0){
if(up->eql == nil){
up->notepending = 0;
interrupted();
}
up->eql = 0;
up->eql = nil;
}
void
@ -72,7 +72,7 @@ qlock(QLock *q)
print("qlock: %#p: ilockdepth %d\n", getcallerpc(&q), m->ilockdepth);
if(up != nil && up->nlocks)
print("qlock: %#p: nlocks %d\n", getcallerpc(&q), up->nlocks);
if(up != nil && up->eql)
if(up != nil && up->eql != nil)
print("qlock: %#p: eql %p\n", getcallerpc(&q), up->eql);
if(q->use.key == 0x55555555)
panic("qlock: q %#p, key 5*", q);
@ -83,17 +83,17 @@ qlock(QLock *q)
unlock(&q->use);
return;
}
if(up == 0)
if(up == nil)
panic("qlock");
rwstats.qlockq++;
p = q->tail;
if(p == 0)
if(p == nil)
q->head = up;
else
p->qnext = up;
q->tail = up;
up->eql = 0;
up->qnext = 0;
up->eql = nil;
up->qnext = nil;
up->state = Queueing;
up->qpc = getcallerpc(&q);
unlock(&q->use);
@ -124,10 +124,10 @@ qunlock(QLock *q)
print("qunlock called with qlock not held, from %#p\n",
getcallerpc(&q));
p = q->head;
if(p){
if(p != nil){
q->head = p->qnext;
if(q->head == 0)
q->tail = 0;
if(q->head == nil)
q->tail = nil;
unlock(&q->use);
ready(p);
return;
@ -154,12 +154,12 @@ rlock(RWlock *q)
p = q->tail;
if(up == nil)
panic("rlock");
if(p == 0)
if(p == nil)
q->head = up;
else
p->qnext = up;
q->tail = up;
up->qnext = 0;
up->qnext = nil;
up->state = QueueingR;
unlock(&q->use);
sched();
@ -181,8 +181,8 @@ runlock(RWlock *q)
if(p->state != QueueingW)
panic("runlock");
q->head = p->qnext;
if(q->head == 0)
q->tail = 0;
if(q->head == nil)
q->tail = nil;
q->writer = 1;
unlock(&q->use);
ready(p);
@ -214,7 +214,7 @@ wlock(RWlock *q)
else
p->qnext = up;
q->tail = up;
up->qnext = 0;
up->qnext = nil;
up->state = QueueingW;
unlock(&q->use);
sched();