--- old/src/hotspot/share/runtime/thread.inline.hpp 2019-11-21 11:55:39.325445332 +0100 +++ new/src/hotspot/share/runtime/thread.inline.hpp 2019-11-21 11:55:39.069441004 +0100 @@ -37,14 +37,14 @@ do { flags = _suspend_flags; } - while (Atomic::cmpxchg((flags | f), &_suspend_flags, flags) != flags); + while (Atomic::cmpxchg(&_suspend_flags, flags, (flags | f)) != flags); } inline void Thread::clear_suspend_flag(SuspendFlags f) { uint32_t flags; do { flags = _suspend_flags; } - while (Atomic::cmpxchg((flags & ~f), &_suspend_flags, flags) != flags); + while (Atomic::cmpxchg(&_suspend_flags, flags, (flags & ~f)) != flags); } inline void Thread::set_has_async_exception() { @@ -83,7 +83,7 @@ } inline ThreadsList* Thread::cmpxchg_threads_hazard_ptr(ThreadsList* exchange_value, ThreadsList* compare_value) { - return (ThreadsList*)Atomic::cmpxchg(exchange_value, &_threads_hazard_ptr, compare_value); + return (ThreadsList*)Atomic::cmpxchg(&_threads_hazard_ptr, compare_value, exchange_value); } inline ThreadsList* Thread::get_threads_hazard_ptr() {