source: benchmark/mutexStmt/cppLock.hpp @ e4f13fe

class cpp_test_spinlock {
        volatile bool lockBool = 0;

  public:
        inline void lock() {
                for ( ;; ) {
                        if ( (this->lockBool == 0) && (__atomic_test_and_set( &this->lockBool, __ATOMIC_ACQUIRE ) == 0) ) break;
                }
        }

        inline bool try_lock() {
                return (this->lockBool == 0) && (__atomic_test_and_set( &this->lockBool, __ATOMIC_ACQUIRE ) == 0);
        }

        inline void unlock() {
                __atomic_clear( &this->lockBool, __ATOMIC_RELEASE );
        }
};