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File: [cvs.NetBSD.org] / src / lib / libc / stdlib / exit.c (download)

Revision 1.15.36.1, Tue Aug 29 09:43:16 2017 UTC (2 years, 3 months ago) by bouyer
Branch: netbsd-8
CVS Tags: netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, matt-nb8-mediatek-base, matt-nb8-mediatek
Changes since 1.15: +4 -2 lines

Pull up following revision(s) (requested by joerg in ticket #127):
	tests/libexec/ld.elf_so/h_thread_local_dtor.c: revision 1.1
	external/gpl3/gcc/lib/libstdc++-v3/arch/earmv6/c++config.h: revision 1.14
	external/gpl3/gcc/lib/libstdc++-v3/arch/earmeb/c++config.h: revision 1.17
	lib/libc/stdlib/atexit.h: file removal
	lib/libc/stdlib/exit.c: revision 1.16
	external/gpl3/gcc/lib/libstdc++-v3/arch/powerpc64/c++config.h: revision 1.8
	lib/libc/stdlib/exit.c: revision 1.17
	external/gpl3/gcc/lib/libstdc++-v3/arch/earmv7hf/c++config.h: revision 1.14
	distrib/sets/lists/debug/shl.mi: revision 1.178
	external/gpl3/gcc/lib/libstdc++-v3/arch/sh3el/c++config.h: revision 1.21
	distrib/sets/lists/debug/shl.mi: revision 1.179
	distrib/sets/lists/debug/mi: revision 1.219
	lib/libpthread/pthread.c: revision 1.150
	external/gpl3/gcc/lib/libstdc++-v3/arch/earmv7/c++config.h: revision 1.14
	libexec/ld.elf_so/symbols.map: revision 1.2
	include/dlfcn.h: revision 1.25
	external/gpl3/gcc/lib/libstdc++-v3/arch/arm/c++config.h: revision 1.21
	external/gpl3/gcc/lib/libstdc++-v3/arch/x86_64/c++config.h: revision 1.23
	external/gpl3/gcc/lib/libstdc++-v3/arch/mips64el/c++config.h: revision 1.18
	external/gpl3/gcc/lib/libstdc++-v3/arch/earmv4eb/c++config.h: revision 1.14
	external/gpl3/gcc/lib/libstdc++-v3/arch/earm/c++config.h: revision 1.19
	external/gpl3/gcc/lib/libstdc++-v3/arch/mipsel/c++config.h: revision 1.19
	external/gpl3/gcc/lib/libstdc++-v3/arch/ia64/c++config.h: revision 1.5
	external/gpl3/gcc/lib/libstdc++-v3/arch/earmv6eb/c++config.h: revision 1.14
	external/gpl3/gcc/lib/libstdc++-v3/arch/earmhf/c++config.h: revision 1.17
	distrib/sets/lists/tests/mi: revision 1.755
	external/gpl3/gcc/lib/libstdc++-v3/arch/mips64eb/c++config.h: revision 1.19
	external/gpl3/gcc/lib/libstdc++-v3/arch/i386/c++config.h: revision 1.20
	external/gpl3/gcc/lib/libstdc++-v3/arch/vax/c++config.h: revision 1.21
	external/gpl3/gcc/lib/libstdc++-v3/arch/armeb/c++config.h: revision 1.21
	external/gpl3/gcc/lib/libstdc++-v3/arch/sparc/c++config.h: revision 1.20
	lib/libc/dlfcn/dlfcn_elf.c: revision 1.14
	tests/libexec/ld.elf_so/t_thread_local_dtor.sh: revision 1.1
	tests/lib/libpthread/t_thread_local_dtor.sh: revision 1.1
	lib/libc/stdlib/Makefile.inc: revision 1.93
	lib/libc/include/atexit.h: revision 1.1
	lib/libc/include/atexit.h: revision 1.2
	external/gpl3/gcc/lib/libstdc++-v3/arch/m68k/c++config.h: revision 1.19
	external/gpl3/gcc/lib/libstdc++-v3/arch/earmv6hf/c++config.h: revision 1.14
	distrib/sets/lists/debug/shl.mi: revision 1.180
	external/gpl3/gcc/lib/libstdc++-v3/arch/sparc64/c++config.h: revision 1.19
	external/gpl3/gcc/lib/libstdc++-v3/arch/earmv6hfeb/c++config.h: revision 1.14
	external/gpl3/gcc/lib/libstdc++-v3/arch/hppa/c++config.h: revision 1.19
	external/gpl3/gcc/lib/libstdc++-v3/arch/earmv7hfeb/c++config.h: revision 1.14
	lib/libc/stdlib/cxa_thread_atexit.c: revision 1.1
	tests/libexec/ld.elf_so/helper_dso3/h_helper_dso3.cpp: revision 1.1
	tests/libexec/ld.elf_so/helper_dso3/Makefile: revision 1.1
	external/gpl3/gcc/lib/libstdc++-v3/arch/riscv64/c++config.h: revision 1.5
	libexec/ld.elf_so/rtld.c: revision 1.185
	external/gpl3/gcc/lib/libstdc++-v3/arch/sh3eb/c++config.h: revision 1.19
	external/gpl3/gcc/lib/libstdc++-v3/arch/riscv32/c++config.h: revision 1.5
	external/gpl3/gcc/lib/libstdc++-v3/arch/m68000/c++config.h: revision 1.15
	external/gpl3/gcc/lib/libstdc++-v3/arch/mipseb/c++config.h: revision 1.21
	external/gpl3/gcc/lib/libstdc++-v3/arch/coldfire/c++config.h: revision 1.12
	external/gpl3/gcc/lib/libstdc++-v3/arch/earmv4/c++config.h: revision 1.14
	external/gpl3/gcc/lib/libstdc++-v3/arch/earmhfeb/c++config.h: revision 1.15
	external/gpl3/gcc/lib/libstdc++-v3/arch/alpha/c++config.h: revision 1.19
	tests/libexec/ld.elf_so/Makefile: revision 1.9
	external/gpl3/gcc/lib/libstdc++-v3/arch/powerpc/c++config.h: revision 1.20
	external/gpl3/gcc/lib/libstdc++-v3/arch/earmv7eb/c++config.h: revision 1.14
	tests/lib/libpthread/h_thread_local_dtor.cpp: revision 1.1
	distrib/sets/lists/tests/shl.mi: revision 1.11
	tests/lib/libpthread/Makefile: revision 1.13
	libexec/ld.elf_so/rtld.h: revision 1.129
	external/gpl3/gcc/lib/libstdc++-v3/arch/or1k/c++config.h: revision 1.6
Implement __cxa_thread_atexit and __cxa_thread_atexit_impl. This
functions are used for destructors of thread_local objects.
If a pending destructor exists, prevent unloading of shared objects.
Introduce __dl_cxa_refcount interface for this purpose. When the last
reference is gone and the object has been dlclose'd before, the
unloading is finalized.
Ideally, __cxa_thread_atexit_impl wouldn't exist, but libstdc++ insists
on providing __cxa_thread_atexit as direct wrapper without further
patching.
Fix filename of new debug file
Add misising DEBUGLIB file
Avoid common declaration.
Drop TLS variant checks, emutls is enough for VAX and Sun2.

/*	$NetBSD: exit.c,v 1.15.36.1 2017/08/29 09:43:16 bouyer Exp $	*/

/*-
 * Copyright (c) 1990, 1993
 *	The Regents of the University of California.  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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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>
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char sccsid[] = "@(#)exit.c	8.1 (Berkeley) 6/4/93";
#else
__RCSID("$NetBSD: exit.c,v 1.15.36.1 2017/08/29 09:43:16 bouyer Exp $");
#endif
#endif /* LIBC_SCCS and not lint */

#include <stdlib.h>
#include <unistd.h>
#ifdef _LIBC
#include "reentrant.h"
#include "atexit.h"
#endif

void (*__cleanup)(void);

/*
 * Exit, flushing stdio buffers if necessary.
 */
void
exit(int status)
{

#ifdef _LIBC
	if (__cxa_thread_atexit_used)
		__cxa_thread_run_atexit();
	__cxa_finalize(NULL);
#endif
	if (__cleanup)
		(*__cleanup)();
	_exit(status);
}