xref: /src/tests/lib/libpthread/h_thread_local_dtor.cpp

/*
 * Copyright (c) 2016 Tavian Barnes. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__RCSID("$NetBSD: h_thread_local_dtor.cpp,v 1.1 2017/07/11 15:21:36 joerg Exp $");

#include <cstdlib>
#include <thread>

static int seq;

class OrderChecker {
public:
  explicit OrderChecker(int n) : n_{n} { }

  ~OrderChecker() {
    if (seq != n_) {
      printf("Unexpected sequence point: %d\n", 3);
      _Exit(1);
    }
    ++seq;
  }

private:
  int n_;
};

template <int ID>
class CreatesThreadLocalInDestructor {
public:
  ~CreatesThreadLocalInDestructor() {
    thread_local OrderChecker checker{ID};
  }
};

OrderChecker global{7};

void thread_fn() {
  static OrderChecker fn_static{5};
  thread_local CreatesThreadLocalInDestructor<2> creates_tl2;
  thread_local OrderChecker fn_thread_local{1};
  thread_local CreatesThreadLocalInDestructor<0> creates_tl0;
}

int main() {
  static OrderChecker fn_static{6};

  std::thread{thread_fn}.join();
  if (seq != 3) {
    printf("Unexpected sequence point: %d\n", 3);
    _Exit(1);
  }

  thread_local OrderChecker fn_thread_local{4};
  thread_local CreatesThreadLocalInDestructor<3> creates_tl;

  return 0;
}