abort.c

来自「一个C源代码分析器」· C语言 代码 · 共 44 行

/* Copyright (C) 1991, 1993 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB.  If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA.  */

#include <ansidecl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>

/* Cause an abnormal program termination with core-dump.  */
__NORETURN
void
DEFUN_VOID(abort)
{
  sigset_t sigs;

  if (__sigemptyset(&sigs) == 0 &&
      __sigaddset(&sigs, SIGABRT) == 0)
    (void) __sigprocmask(SIG_UNBLOCK, &sigs, (sigset_t *) NULL);

  while (1)
    if (raise (SIGABRT))
      /* If we can't signal ourselves, exit.  */
      _exit (127);
  /* If we signal ourselves and are still alive,
     or can't exit, loop forever.  */
}