diff options
Diffstat (limited to 'nuttx/sched/exit.c')
-rw-r--r-- | nuttx/sched/exit.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/nuttx/sched/exit.c b/nuttx/sched/exit.c new file mode 100644 index 000000000..7e50c273c --- /dev/null +++ b/nuttx/sched/exit.c @@ -0,0 +1,108 @@ +/**************************************************************************** + * sched/exit.c + * + * Copyright (C) 2007-2008, 2011-2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * 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 NuttX 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 COPYRIGHT HOLDERS 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 + * COPYRIGHT OWNER 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <stdlib.h> +#include <unistd.h> +#include <debug.h> +#include <errno.h> + +#include <nuttx/fs/fs.h> + +#include "os_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Type Declarations + ****************************************************************************/ + +/**************************************************************************** + * Global Variables + ****************************************************************************/ + +/**************************************************************************** + * Private Variables + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: exit + * + * Description: + * The exit() function causes normal process termination and the value of + * status & 0377 to be returned to the parent. + * + * All functions registered with atexit() and on_exit() are called, in the + * reverse order of their registration. + * + * All open streams are flushed and closed. + * + ****************************************************************************/ + +void exit(int status) +{ + _TCB *tcb = (_TCB*)g_readytorun.head; + + /* Only the lower 8-bits of status are used */ + + status &= 0xff; + + /* Perform common task termination logic */ + + task_exithook(tcb, status); + + /* Then "really" exit. Only the lower 8 bits of the exit status are used. */ + + _exit(status); +} |