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#ifndef SRC_NODE_THREADSAFE_COW_INL_H_
#define SRC_NODE_THREADSAFE_COW_INL_H_
#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
namespace node {
template <typename T>
T* CopyOnWrite<T>::write() {
if (data_.use_count() > 1l) {
data_ = std::make_shared<T>(*data_);
}
return data_.get();
}
template <typename T>
ThreadsafeCopyOnWrite<T>::Read::Read(const ThreadsafeCopyOnWrite<T>* cow)
: cow_(cow), lock_(cow->impl_->mutex) {}
template <typename T>
const T& ThreadsafeCopyOnWrite<T>::Read::operator*() const {
return cow_->impl_->data;
}
template <typename T>
const T* ThreadsafeCopyOnWrite<T>::Read::operator->() const {
return &cow_->impl_->data;
}
template <typename T>
ThreadsafeCopyOnWrite<T>::Write::Write(ThreadsafeCopyOnWrite<T>* cow)
: cow_(cow), impl_(cow->impl_.write()), lock_(impl_->mutex) {}
template <typename T>
T& ThreadsafeCopyOnWrite<T>::Write::operator*() {
return impl_->data;
}
template <typename T>
T* ThreadsafeCopyOnWrite<T>::Write::operator->() {
return &impl_->data;
}
template <typename T>
ThreadsafeCopyOnWrite<T>::Impl::Impl(const Impl& other) {
RwLock::ScopedReadLock lock(other.mutex);
data = other.data;
}
} // namespace node
#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#endif // SRC_NODE_THREADSAFE_COW_INL_H_