From 7864ef1588d489dfe0f019555bc7a9279f93bfc3 Mon Sep 17 00:00:00 2001 From: zhuyanlin Date: Mon, 27 Aug 2018 06:52:02 -0600 Subject: [PATCH] include/nuttx/nuttx.h: Added nuttx.h header file which is analogous to the linux.h header file. Currently, it contains on the defintion of the container_of() macro. --- include/nuttx/nuttx.h | 66 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 include/nuttx/nuttx.h diff --git a/include/nuttx/nuttx.h b/include/nuttx/nuttx.h new file mode 100644 index 0000000000..df42325ae3 --- /dev/null +++ b/include/nuttx/nuttx.h @@ -0,0 +1,66 @@ +/**************************************************************************** + * include/nuttx/nuttx.h + * + * Copyright (C) 2018 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * 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. + * + ****************************************************************************/ + +#ifndef __INCLUDE_NUTTX_NUTTX_H +#define __INCLUDE_NUTTX_NUTTX_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include + +#include + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/* Name: container_of + * + * Description: + * Cast a member of a structure out to get the address of the containing + * structure + * + * Arguments: + * ptr - the pointer to the member. + * type - The type of the container struct this is embedded in. + * member - The name of the member within the struct. + */ + +#define container_of(ptr, type, member) \ + ((type *)((uintptr_t)(ptr) - offsetof(type, member))) + +#endif /* __INCLUDE_NUTTX_NUTTX_H */