Revert using a relaxed load before test_and_set; not necessary, and slower, with a proper yielding strategy as opposed to just pause-spinning

2020-06-10 18:20:33 +03:00
parent d35cf29b99
commit 8d79ceaf8a
1 changed files with 1 additions and 1 deletions
--- a/include/boost/smart_ptr/detail/spinlock_gcc_atomic.hpp
+++ b/include/boost/smart_ptr/detail/spinlock_gcc_atomic.hpp
@ -36,7 +36,7 @@ public:

    bool try_lock()
    {
-        return __atomic_load_n( &v_, __ATOMIC_RELAXED ) == 0 && __atomic_test_and_set( &v_, __ATOMIC_ACQUIRE ) == 0;
+        return __atomic_test_and_set( &v_, __ATOMIC_ACQUIRE ) == 0;
    }

    void lock()