void VirtualEventBase::destroyImpl() {
try {
{
// After destroyPromise_ is posted this object may be destroyed, so make
// sure we release EventBase's keep-alive token before that.
SCOPE_EXIT {
evb_.reset();
};
clearCobTimeouts();
while (!onDestructionCallbacks_.rlock()->empty()) {
// To avoid potential deadlock, do not hold the mutex while invoking
// user-supplied callbacks.
EventBase::OnDestructionCallback::List callbacks;
onDestructionCallbacks_.swap(callbacks);
while (!callbacks.empty()) {
auto& callback = callbacks.front();
callbacks.pop_front();
callback.runCallback();
}
}
}
destroyPromise_.set_value();
} catch (...) {
destroyPromise_.set_exception(std::current_exception());
}
}
void VirtualEventBase::destroyImpl() {
// Make sure we release EventBase KeepAlive token even if exception occurs
auto evbLoopKeepAlive = std::move(evbLoopKeepAlive_);
try {
clearCobTimeouts();
onDestructionCallbacks_.withWLock([&](LoopCallbackList& callbacks) {
while (!callbacks.empty()) {
auto& callback = callbacks.front();
callbacks.pop_front();
callback.runLoopCallback();
}
});
destroyPromise_.set_value();
} catch (...) {
destroyPromise_.set_exception(std::current_exception());
}
}
