From 02a6031d03870847aa6b11628b80585004b45194 Mon Sep 17 00:00:00 2001 From: Chris Robinson Date: Fri, 25 Nov 2016 23:25:16 -0800 Subject: Use atomic flags for boolean atomic locks --- common/rwlock.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'common/rwlock.c') diff --git a/common/rwlock.c b/common/rwlock.c index f1a86fa6..67cf3acf 100644 --- a/common/rwlock.c +++ b/common/rwlock.c @@ -11,19 +11,19 @@ /* A simple spinlock. Yield the thread while the given integer is set by * another. Could probably be improved... */ #define LOCK(l) do { \ - while(ATOMIC_EXCHANGE(int, &(l), true, almemory_order_acq_rel) == true) \ + while(ATOMIC_FLAG_TEST_AND_SET(&(l), almemory_order_acq_rel) == true) \ althrd_yield(); \ } while(0) -#define UNLOCK(l) ATOMIC_STORE(&(l), false, almemory_order_release) +#define UNLOCK(l) ATOMIC_FLAG_CLEAR(&(l), almemory_order_release) void RWLockInit(RWLock *lock) { InitRef(&lock->read_count, 0); InitRef(&lock->write_count, 0); - ATOMIC_INIT(&lock->read_lock, false); - ATOMIC_INIT(&lock->read_entry_lock, false); - ATOMIC_INIT(&lock->write_lock, false); + ATOMIC_FLAG_CLEAR(&lock->read_lock, almemory_order_relaxed); + ATOMIC_FLAG_CLEAR(&lock->read_entry_lock, almemory_order_relaxed); + ATOMIC_FLAG_CLEAR(&lock->write_lock, almemory_order_relaxed); } void ReadLock(RWLock *lock) -- cgit v1.2.3