What is data race detection in C++?

What is data race detection in C++?

Data race detection in C++ involves identifying situations where two or more threads access shared data concurrently, and at least one of the accesses is a write. This can lead to unpredictable behavior and bugs.

How can I detect data races in my C++ code?

You can use tools like ThreadSanitizer, Valgrind, or static analysis tools that specifically look for data races in your code.

Can you give me an example of a data race?

Sure! If one thread is writing to a variable while another thread is reading from it without proper synchronization, that's a data race. For example:

int sharedVar;

void thread1() {
    sharedVar = 1;
}

void thread2() {
    int x = sharedVar;
}

What are the consequences of data races?

Consequences can include unpredictable program behavior, crashes, and difficult-to-debug issues, as the outcome may vary with different runs.