ActivityImpl::ActivityImpl() = default;
ActivityImpl::~ActivityImpl() = default;
-void ActivityImpl::ref()
-{
- // Atomic operation! Do not split in two instructions!
- xbt_assert(refcount_ != 0);
- refcount_++;
-}
-
-void ActivityImpl::unref()
-{
- xbt_assert(refcount_ > 0,
- "This activity has a negative refcount! You can only call test() or wait() once per activity.");
- refcount_--;
- if (refcount_ == 0)
- delete this;
-}
-
// boost::intrusive_ptr<Activity> support:
void intrusive_ptr_add_ref(simgrid::kernel::activity::ActivityImpl* activity)
{
- activity->ref();
+ activity->refcount_.fetch_add(1, std::memory_order_relaxed);
}
void intrusive_ptr_release(simgrid::kernel::activity::ActivityImpl* activity)
{
- activity->unref();
+ if (activity->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
+ std::atomic_thread_fence(std::memory_order_acquire);
+ delete activity;
+ }
}
}
}