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// Copyright (c) 2018-2021 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <util/string.h>
#include <util/threadnames.h>
#include <mutex>
#include <set>
#include <string>
#include <thread>
#include <vector>
#if defined(HAVE_CONFIG_H)
#include <config/bitcoin-config.h>
#endif
#include <boost/test/unit_test.hpp>
BOOST_AUTO_TEST_SUITE(util_threadnames_tests)
const std::string TEST_THREAD_NAME_BASE = "test_thread.";
/**
* Run a bunch of threads to all call util::ThreadRename.
*
* @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());
};
threads.reserve(num_threads);
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
* applied properly.
*/
BOOST_AUTO_TEST_CASE(util_threadnames_test_rename_threaded)
{
#if !defined(HAVE_THREAD_LOCAL)
// This test doesn't apply to platforms where we don't have thread_local.
return;
#endif
std::set<std::string> names = RenameEnMasse(100);
BOOST_CHECK_EQUAL(names.size(), 100U);
// Names "test_thread.[n]" should exist for n = [0, 99]
for (int i = 0; i < 100; ++i) {
BOOST_CHECK(names.find(TEST_THREAD_NAME_BASE + ToString(i)) != names.end());
}
}
BOOST_AUTO_TEST_SUITE_END()
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