nuttx/sched/task_init.c

/************************************************************
 * task_init.c
 *
 *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
 *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
 *
 * 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 Gregory Nutt 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 <sys/types.h>
#include <sched.h>
#include "os_internal.h"

/************************************************************
 * Definitions
 ************************************************************/

/************************************************************
 * Private Type Declarations
 ************************************************************/

/************************************************************
 * Global Variables
 ************************************************************/

/************************************************************
 * Private Variables
 ************************************************************/

/************************************************************
 * Private Function Prototypes
 ************************************************************/

/************************************************************
 * Private Functions
 ************************************************************/

/************************************************************
 * Public Functions
 ************************************************************/

/************************************************************
 * Name: task_init
 *
 * Description:
 *   This is a wrapper around the internal _task_init() that
 *   provides a VxWorks-like API.  See _task_init() for
 *   further information.
 *
 * Input Parameters:
 *   tcb        - Address of the new task's TCB
 *   name       - Name of the new task (not used)
 *   priority   - Priority of the new task
 *   stack      - start of the pre-allocated stack
 *   stack_size - size (in bytes) of the stack allocated
 *   entry      - Application start point of the new task
 *   arg1-4     - Four required task arguments to pass to
 *                the task when it is started.
 *
 * Return Value:
 *   see _task_init()
 *
 ************************************************************/

#ifndef CONFIG_CUSTOM_STACK
STATUS task_init(FAR _TCB *tcb, const char *name, int priority,
                 FAR uint32 *stack, uint32 stack_size, main_t entry,
                 FAR char *arg1, FAR char *arg2,
                 FAR char *arg3, FAR char *arg4)
{
  up_use_stack(tcb, stack, stack_size);
  return _task_init(tcb, name, priority, task_start, entry,
                    FALSE, arg1, arg2, arg3, arg4);
}
#else
STATUS task_init(FAR _TCB *tcb, const char *name, int priority,
                 main_t entry,
                 FAR char *arg1, FAR char *arg2,
                 FAR char *arg3, FAR char *arg4)
{
  return _task_init(tcb, name, priority, task_start, entry,
                    FALSE, arg1, arg2, arg3, arg4);
}
#endif