diff options
Diffstat (limited to 'lib/frrcu.c')
| -rw-r--r-- | lib/frrcu.c | 36 |
1 files changed, 22 insertions, 14 deletions
diff --git a/lib/frrcu.c b/lib/frrcu.c index c7cc655..b85c525 100644 --- a/lib/frrcu.c +++ b/lib/frrcu.c @@ -149,20 +149,9 @@ static struct rcu_thread *rcu_self(void) return (struct rcu_thread *)pthread_getspecific(rcu_thread_key); } -/* - * thread management (for the non-main thread) - */ -struct rcu_thread *rcu_thread_prepare(void) +struct rcu_thread *rcu_thread_new(void *arg) { - struct rcu_thread *rt, *cur; - - rcu_assert_read_locked(); - - if (!rcu_active) - rcu_start(); - - cur = rcu_self(); - assert(cur->depth); + struct rcu_thread *rt, *cur = arg; /* new thread always starts with rcu_read_lock held at depth 1, and * holding the same epoch as the parent (this makes it possible to @@ -172,13 +161,32 @@ struct rcu_thread *rcu_thread_prepare(void) rt->depth = 1; seqlock_init(&rt->rcu); - seqlock_acquire(&rt->rcu, &cur->rcu); + if (cur) + seqlock_acquire(&rt->rcu, &cur->rcu); rcu_threads_add_tail(&rcu_threads, rt); return rt; } +/* + * thread management (for the non-main thread) + */ +struct rcu_thread *rcu_thread_prepare(void) +{ + struct rcu_thread *cur; + + rcu_assert_read_locked(); + + if (!rcu_active) + rcu_start(); + + cur = rcu_self(); + assert(cur->depth); + + return rcu_thread_new(cur); +} + void rcu_thread_start(struct rcu_thread *rt) { pthread_setspecific(rcu_thread_key, rt); |