std::shared_ptr<Exe> getExecutor(
Singleton<std::weak_ptr<Exe>>& sExecutor,
Singleton<std::shared_ptr<DefaultExe>>& sDefaultExecutor,
Singleton<RWSpinLock, LockTag>& sExecutorLock) {
std::shared_ptr<Exe> executor;
auto singleton = sExecutor.try_get();
auto lock = sExecutorLock.try_get();
{
RWSpinLock::ReadHolder guard(lock.get());
if ((executor = sExecutor.try_get()->lock())) {
return executor;
}
}
RWSpinLock::WriteHolder guard(lock.get());
executor = singleton->lock();
if (!executor) {
std::weak_ptr<Exe> defaultExecutor = *sDefaultExecutor.try_get().get();
executor = defaultExecutor.lock();
sExecutor.try_get().get()->swap(defaultExecutor);
}
return executor;
}
void setExecutor(
std::shared_ptr<Exe> executor,
Singleton<std::weak_ptr<Exe>>& sExecutor,
Singleton<RWSpinLock, LockTag>& sExecutorLock) {
auto lock = sExecutorLock.try_get();
RWSpinLock::WriteHolder guard(*lock);
std::weak_ptr<Exe> executor_weak = executor;
sExecutor.try_get().get()->swap(executor_weak);
}
std::shared_ptr<ShutdownSocketSet> tryGetShutdownSocketSet() {
return singleton.try_get();
}