Function RenameEnMasse

src/test/util_threadnames_tests.cpp:29–48

* Run a bunch of threads to all call util::ThreadRename. * * @return the set of name each thread has after attempted renaming. */

 * @return the set of name each thread has after attempted renaming.
 */
std::set<std::string> RenameEnMasse(int num_threads)
{
    std::vector<std::thread> threads;
    std::set<std::string> names;
    std::mutex lock;

    auto RenameThisThread = [&](int i) {
        util::ThreadRename(TEST_THREAD_NAME_BASE + ToString(i));
        std::lock_guard<std::mutex> guard(lock);
        names.insert(util::ThreadGetInternalName());
    };

    for (int i = 0; i < num_threads; ++i) {
        threads.push_back(std::thread(RenameThisThread, i));
    }

    for (std::thread& thread : threads) thread.join();

    return names;
}

/**
 * Rename a bunch of threads with the same basename (expect_multiple=true), ensuring suffixes are