Files @ r28396:ef195b601c72
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Location: cpp/openttd-patchpack/source/src/thread.h - annotation

Peter Nelson
Fix: Pass townnameparts as parameter when testing townname based companyname. (#11685)

Length of returned string could vary and pass/fail the length check with a different
string than the final selection.
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/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file thread.h Base of all threads. */

#ifndef THREAD_H
#define THREAD_H

#include "debug.h"
#include "crashlog.h"
#include <system_error>
#include <thread>
#include <mutex>

/**
 * Sleep on the current thread for a defined time.
 * @param milliseconds Time to sleep for in milliseconds.
 */
inline void CSleep(int milliseconds)
{
	std::this_thread::sleep_for(std::chrono::milliseconds(milliseconds));
}

/**
 * Name the thread this function is called on for the debugger.
 * @param name Name to set for the thread..
 */
void SetCurrentThreadName(const char *name);


/**
 * Start a new thread.
 * @tparam TFn Type of the function to call on the thread.
 * @tparam TArgs Type of the parameters of the thread function.
 * @param thr Pointer to a thread object; may be \c nullptr if a detached thread is wanted.
 * @param name Name of the thread.
 * @param _Fx Function to call on the thread.
 * @param _Ax Arguments for the thread function.
 * @return True if the thread was successfully started, false otherwise.
 */
template<class TFn, class... TArgs>
inline bool StartNewThread(std::thread *thr, const char *name, TFn&& _Fx, TArgs&&... _Ax)
{
	try {
		static std::mutex thread_startup_mutex;
		std::lock_guard<std::mutex> lock(thread_startup_mutex);

		std::thread t([] (const char *name, TFn&& F, TArgs&&... A) {
				/* Delay starting the thread till the main thread is finished
				 * with the administration. This prevent race-conditions on
				 * startup. */
				{
					std::lock_guard<std::mutex> lock(thread_startup_mutex);
				}

				SetCurrentThreadName(name);
				CrashLog::InitThread();
				try {
					/* Call user function with the given arguments. */
					F(A...);
				} catch (...) {
					NOT_REACHED();
				}
			}, name, std::forward<TFn>(_Fx), std::forward<TArgs>(_Ax)...);

		if (thr != nullptr) {
			*thr = std::move(t);
		} else {
			t.detach();
		}

		return true;
	} catch (const std::system_error &e) {
		/* Something went wrong, the system we are running on might not support threads. */
		Debug(misc, 1, "Can't create thread '{}': {}", name, e.what());
	}

	return false;
}

#endif /* THREAD_H */