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Diffstat (limited to 'nuttx/sched/atexit.c')
| -rw-r--r-- | nuttx/sched/atexit.c | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/nuttx/sched/atexit.c b/nuttx/sched/atexit.c deleted file mode 100644 index b0559b01b..000000000 --- a/nuttx/sched/atexit.c +++ /dev/null @@ -1,174 +0,0 @@ -/**************************************************************************** - * sched/atexit.c - * - * Copyright (C) 2007, 2009, 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 <assert.h> -#include <unistd.h> -#include <debug.h> -#include <errno.h> - -#include <nuttx/fs/fs.h> - -#include "os_internal.h" - -#ifdef CONFIG_SCHED_ATEXIT - -/**************************************************************************** - * Pre-processor Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Type Declarations - ****************************************************************************/ - -/**************************************************************************** - * Global Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Function Prototypes - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: atexit - * - * Description: - * Registers a function to be called at program exit. - * The atexit() function registers the given function to be called - * at normal process termination, whether via exit or via return from - * the program's main(). - * - * NOTE: CONFIG_SCHED_ATEXIT must be defined to enable this function - * - * Limitiations in the current implementation: - * - * 1. Only a single atexit function can be registered unless - * CONFIG_SCHED_ATEXIT_MAX defines a larger number. - * 2. atexit functions are not inherited when a new task is - * created. - * 3. If both SCHED_ONEXIT and SCHED_ATEXIT are selected, then atexit() - * is built on top of the on_exit() implementation. In that case, - * CONFIG_SCHED_ONEXIT_MAX determines the size of the combined - * number of atexit(0) and on_exit calls and SCHED_ATEXIT_MAX is - * not used. - * - * Input Parameters: - * func - A pointer to the function to be called when the task exits. - * - * Return Value: - * Zero on success. Non-zero on failure. - * - ****************************************************************************/ - -int atexit(void (*func)(void)) -{ -#if defined(CONFIG_SCHED_ONEXIT) - /* atexit is equivalent to on_exit() with no argument (Assuming that the ABI - * can handle a callback function that recieves more parameters than it expects). - */ - - return on_exit(onexitfunc_t func, NULL); - -#elif defined(CONFIG_SCHED_ATEXIT_MAX) && CONFIG_SCHED_ATEXIT_MAX > 1 - _TCB *tcb = (_TCB*)g_readytorun.head; - int index; - int ret = ERROR; - - /* The following must be atomic */ - - if (func) - { - sched_lock(); - - /* Search for the first available slot. atexit() functions are registered - * from lower to higher arry indices; they must be called in the reverse - * order of registration when task exists, i.e., from higher to lower - * indices. - */ - - available = -1; - for (index = 0; index < CONFIG_SCHED_ATEXIT_MAX; index++) - { - if (!tcb->atexitfunc[index]) - { - tcb->atexitfunc[index] = func; - ret = OK; - break; - } - } - - sched_unlock(); - } - - return ret; -#else - _TCB *tcb = (_TCB*)g_readytorun.head; - int ret = ERROR; - - /* The following must be atomic */ - - sched_lock(); - if (func && !tcb->atexitfunc) - { - tcb->atexitfunc = func; - ret = OK; - } - - sched_unlock(); - return ret; -#endif -} - -#endif /* CONFIG_SCHED_ATEXIT */ - - |