1 /* 2 * Copyright (c) 2002 Alfred Perlstein <alfred@freebsd.org>. 3 * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by John Birrell. 17 * 4. Neither the name of the author nor the names of any co-contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include <pthread.h> 38 39 #include "thr_private.h" 40 41 /* 42 * This module uses GCC extentions to initialize the 43 * threads package at program start-up time. 44 */ 45 46 void _thread_init_hack(void) __attribute__ ((constructor)); 47 48 void 49 _thread_init_hack(void) 50 { 51 52 _thread_init(); 53 } 54 55 /* 56 * For the shared version of the threads library, the above is sufficient. 57 * But for the archive version of the library, we need a little bit more. 58 * Namely, we must arrange for this particular module to be pulled in from 59 * the archive library at link time. To accomplish that, we define and 60 * initialize a variable, "_thread_autoinit_dummy_decl". This variable is 61 * referenced (as an extern) from libc/stdlib/exit.c. This will always 62 * create a need for this module, ensuring that it is present in the 63 * executable. 64 */ 65 extern int _thread_autoinit_dummy_decl; 66 int _thread_autoinit_dummy_decl = 0; 67