C++ boost::thread and automatically locking containers
-
22-07-2019 - |
Question
Is there a way to automatically lock an STL container on access, without having to lock and release around it?
Solution
The currrent C++ standard does not say anything about thread safety for STL containers. Officially it is possible for an STL implementation to be thread safe, but it's very unusual. If your STL implementation is not thread safe, then you will need to "lock and release around it" or find some other way to coordinate access.
You may be interested in Intel's Threading Building Blocks which includes some thread safe containers similar to STL containers.
OTHER TIPS
After much Googling, it seems the way to do it is to create a wrapper around your container. e.g.:
template<typename T>
class thread_queue
{
private:
std::queue<T> the_queue;
mutable boost::mutex the_mutex;
boost::condition_variable the_condition_variable;
public:
void push(T const& data)
{
boost::mutex::scoped_lock lock(the_mutex);
the_queue.push(data);
lock.unlock();
the_condition_variable.notify_one();
}
etc ...
}
Licensed under: CC-BY-SA with attribution
Not affiliated with StackOverflow