Do I need to protect read access to an STL container in a multithreading environment?

by

Yes, the read threads will need some sort of mutex control, otherwise the write will change things from under it.

A reader/writer mutex should be enough. But strictly speaking this is an implmentation-specific issue. It’s possible that an implementation may have mutable members even in const objects that are read-only in your code.

More Related Contents:

  1. When to use volatile with multi threading?
  2. Concurrency: Atomic and volatile in C++11 memory model
  3. Lock-free Progress Guarantees in a circular buffer queue
  4. Understanding std::hardware_destructive_interference_size and std::hardware_constructive_interference_size
  5. STL vector and thread-safety
  6. Circular lock-free buffer
  7. Is std::string size() a O(1) operation?
  8. What the heque is going on with the memory overhead of std::deque?
  9. Thread safety of std::map for read-only operations
  10. C++11 STL containers and thread safety
  11. Making a C++ class a Monitor (in the concurrent sense)
  12. Visual c++ “for each” portability
  13. Is stl vector concurrent read thread-safe?
  14. How to increment an iterator by 2?
  15. Why the values {1, 1, 0, -1, -1, -1, 0, 1} and {0, 1, 1, 1, 0, -1, -1, -1} were chosen for dx[dir] and dy[dir]? [closed]
  16. How can this code be reversed? (recursion)
  17. Hi, Just Want to Know What This Error Means
  18. Is Meyers’ implementation of the Singleton pattern thread safe?
  19. How to determine if a string is a number with C++?
  20. Is std::vector so much slower than plain arrays?
  21. How do I erase an element from std::vector by index?
  22. Why don’t compilers merge redundant std::atomic writes?
  23. Why use functors over functions?
  24. How to avoid Qt app.exec() blocking main thread
  25. How to give priority to privileged thread in mutex locking?
  26. Cancelling boost asio deadline timer safely
  27. std::thread is not a member of namespace std using Eclipse Kepler MinGW
  28. How to use the CancellationToken without throwing/catching an exception?
  29. Why can’t I replace std::map with std::unordered_map
  30. ReleaseSemaphore does not release the semaphore

Leave a Comment