C++ (Cpp) atomic::compare_exchange_weak Examples

Example #1

File: lock_free.cpp Project: dingyiheng/Concurrency

	void push(T const& data) {
		node* const new_node = new node(data);
		new_node->next = head.load();
		//the cew check if the head equal to new_node->next, if it does, replace head with new_node
		//if it doesn't, replace the new_node->next with head.(because meanwhile the head has already been modified)
		while (!head.compare_exchange_weak(new_node->next, new_node));
	}

Example #2

File: chapter1.cpp Project: Omega094/concurrency_practice

	void push(T const& data)
	{
		node* const new_node = new node(data);
		new_node -> next = head.load();
		while( !head.compare_exchange_weak(new_node->next, new_node)  ) ;
	}