/* Measure pthread_create thread creation with different stack

   and guard sizes.

   Copyright (C) 2017-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <stdio.h>

#include <unistd.h>

#include <support/xthread.h>

static size_t pgsize;

static void

thread_create_init (void)

{

  pgsize = sysconf (_SC_PAGESIZE);

}

static void *

thread_dummy (void *arg)

{

  return NULL;

}

static void

thread_create (int nthreads, size_t stacksize, size_t guardsize)

{

  pthread_attr_t attr;

  xpthread_attr_init (&attr);

  stacksize = stacksize * pgsize;

  guardsize = guardsize * pgsize;

  xpthread_attr_setstacksize (&attr, stacksize);

  xpthread_attr_setguardsize (&attr, guardsize);

  pthread_t ts[nthreads];

  for (int i = 0; i < nthreads; i++)

    ts[i] = xpthread_create (&attr, thread_dummy, NULL);

  for (int i = 0; i < nthreads; i++)

    xpthread_join (ts[i]);

}