/*
 * Copyright (c) 2001 Daniel Eischen <deischen@FreeBSD.org>
 * 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. Neither the name of the author nor the names of any co-contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY DANIEL EISCHEN 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 AUTHOR 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>
#include <sys/types.h>
#include "libc_private.h"

void	_thread_init_stub(void);
void	_nmalloc_thr_init(void);
void	_upmap_thr_init(void);

int	_thread_autoinit_dummy_decl_stub = 0;

/*
 * This stub is overridden when libpthreads is linked in.  However,
 * we can apply the constructor to the weak reference.  Instead the
 * constructor is applied to the stub and we do a run-time check to
 * see if the stub has been overridden by pthreads.
 */
void _thread_init_stub(void) __attribute__ ((constructor));
__weak_reference(_thread_init_stub, _thread_init);

void
_thread_init_stub(void)
{
	/*
	 * Only run libc related pthreads initialization from here
	 * if pthreads did not override the weak reference.  Otherwise
	 * pthreads will do it after setting up a real thread context.
	 */
	if (_thread_init == _thread_init_stub) {
		_libc_thr_init();
	}
}

/*
 * Pre-initialization prior to thread startup to avoid certain
 * chicken-and-egg issues with low-level allocations.
 */
void
_libc_thr_init(void)
{
	_nmalloc_thr_init();
	_upmap_thr_init();
}

__weak_reference(_thread_autoinit_dummy_decl_stub, _thread_autoinit_dummy_decl);