Beautiful code #9
Beautiful code #9 explanation
In the above example, we have two threads (t1 and t2) that will attempt to access a restricted memory location. The access is controlled using a mutex (mtx) and a condition variable (cv).
The restrictedAccessThread function represents the code executed by each thread. It first acquires a lock on the mutex and then waits on the condition variable until
true. This ensures that the thread remains blocked until it is explicitly allowed to access the memory location.
Once access is granted (i.e., isAllowed becomes true), the thread proceeds to access the restricted memory location. After completing its operations, it releases the lock and notifies other waiting threads that access is now allowed and first come thread will get the access to the restricted memory location.
In the main function, we initially set
trueand notify all waiting threads using
cv.notify_all(). This allows the threads to proceed with their operations. You can modify the control flow and synchronization logic as per your specific requirements.
By using a combination of mutexes, condition variables, and boolean flags, you can selectively control and restrict access to a memory location in C++, allowing only certain threads to access it while ensuring synchronization and avoiding data races.
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