313 lines
8.6 KiB
C
313 lines
8.6 KiB
C
/****************************************************************************
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* include/sys/types.h
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*
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* Copyright (C) 2007-2009, 2011-2012, 2014-2015 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_SYS_TYPES_H
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#define __INCLUDE_SYS_TYPES_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/compiler.h>
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#ifndef __ASSEMBLY__
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# include <stdint.h>
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#endif
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Alternative values for type bool (for historic reasons) */
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#ifndef TRUE
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# define TRUE 1
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#endif
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#ifndef FALSE
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# define FALSE 0
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#endif
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/* NULL is usually defined in stddef.h (which includes this file) */
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#ifndef NULL
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/* SDCC is sensitive to NULL pointer type conversions, and C++ defines
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* NULL as zero
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*/
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# if defined(SDCC) || defined(__SDCC) || defined(__cplusplus)
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# define NULL (0)
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# else
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# define NULL ((void*)0)
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# endif
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#endif
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/* POSIX-like OS return values: */
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#if !defined(__cplusplus)
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# undef ERROR
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# define ERROR -1
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#endif
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#undef OK
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#define OK 0
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/* Scheduling Priorities.
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*
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* NOTES:
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* - Only the idle task can take the true minimum priority.
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* - These definitions are non-standard internal definitions and, for
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* portability reasons, should not be used by application software.
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*/
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#define SCHED_PRIORITY_MAX 255
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#define SCHED_PRIORITY_DEFAULT 100
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#define SCHED_PRIORITY_MIN 1
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#define SCHED_PRIORITY_IDLE 0
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/****************************************************************************
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* Type Declarations
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****************************************************************************/
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#ifndef __ASSEMBLY__
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/* Floating point types */
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typedef float float32;
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#ifndef CONFIG_HAVE_DOUBLE
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typedef float double_t;
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typedef float float64;
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#else
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typedef double double_t;
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typedef double float64;
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#endif
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/* Misc. scalar types */
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/* mode_t is an integer type used for file attributes. mode_t needs
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* to be at least 16-bits but, in fact, must be sizeof(int) because it is
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* passed via varargs.
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*/
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typedef unsigned int mode_t;
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/* size_t is used for sizes of memory objects.
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* ssize_t is used for a count of bytes or an error indication.
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*
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* See also definitions of SIZE_MAX et al in limits.h.
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*
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* REVISIT: size_t belongs in stddef.h
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*/
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#ifdef CONFIG_SMALL_MEMORY
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typedef uint16_t size_t;
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typedef int16_t ssize_t;
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typedef uint16_t rsize_t;
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#else /* CONFIG_SMALL_MEMORY */
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/* As a general rule, the size of size_t should be the same as the size of
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* uintptr_t: 32-bits on a machine with 32-bit addressing but 64-bits on a
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* machine with 64-bit addressing.
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*/
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typedef uintptr_t size_t;
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typedef intptr_t ssize_t;
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typedef uintptr_t rsize_t;
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#endif /* CONFIG_SMALL_MEMORY */
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/* uid_t is used for user IDs
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* gid_t is used for group IDs.
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*/
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typedef int16_t uid_t;
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typedef int16_t gid_t;
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/* dev_t is used for device IDs */
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typedef uint16_t dev_t;
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/* ino_t is used for file serial numbers */
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typedef uint16_t ino_t;
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/* nlink_t is used for link counts */
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typedef uint16_t nlink_t;
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/* pid_t is used for process IDs and process group IDs. It must be signed because
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* negative PID values are used to represent invalid PIDs.
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*/
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typedef int16_t pid_t;
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/* id_t is a general identifier that can be used to contain at least a pid_t,
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* uid_t, or gid_t.
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*/
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typedef int16_t id_t;
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/* Unix requires a key of type key_t defined in file sys/types.h for requesting
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* resources such as shared memory segments, message queues and semaphores. A key
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* is simply an integer of type key_t
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*/
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typedef int16_t key_t;
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/* Signed integral type of the result of subtracting two pointers */
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typedef intptr_t ptrdiff_t;
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#ifndef CONFIG_WCHAR_BUILTIN
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/* Wide, 16-bit character types. wchar_t is a built-in type in C++ and
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* its declaration here may cause compilation errors on some compilers
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* if -DCONFIG_WCHAR_BUILTIN is not included in the CXXFLAGS.
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*
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* REVISIT: wchar_t belongs in stddef.h
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*/
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typedef uint16_t wchar_t;
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#endif
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/* wint_t
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* An integral type capable of storing any valid value of wchar_t, or WEOF.
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*/
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typedef int wint_t;
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/* wctype_t
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* A scalar type of a data object that can hold values which represent
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* locale-specific character classification.
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*/
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typedef int wctype_t;
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/* blkcnt_t and off_t are signed integer types.
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*
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* blkcnt_t is used for file block counts.
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* off_t is used for file offsets and sizes.
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* fpos_t is used for file positions.
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*
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* Hence, all should be independent of processor architecture.
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*/
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typedef uint32_t blkcnt_t;
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typedef int32_t off_t;
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typedef off_t fpos_t;
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#ifdef CONFIG_HAVE_LONG_LONG
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/* Large file versions */
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typedef int64_t off64_t;
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typedef int64_t fpos64_t;
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#endif
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/* blksize_t is a signed integer value used for file block sizes */
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typedef int16_t blksize_t;
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/* Network related */
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typedef unsigned int socklen_t;
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typedef uint16_t sa_family_t;
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/* Used for system times in clock ticks. This type is the natural width of
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* the system timer.
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*
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* NOTE: The signed-ness of clock_t is not specified at OpenGroup.org. An
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* unsigned type is used to support the full range of the internal clock.
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*/
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#ifdef CONFIG_SYSTEM_TIME64
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typedef uint64_t clock_t;
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#else
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typedef uint32_t clock_t;
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#endif
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/* The type useconds_t shall be an unsigned integer type capable of storing
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* values at least in the range [0, 1000000]. The type suseconds_t shall be
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* a signed integer type capable of storing values at least in the range
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* [-1, 1000000].
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*/
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typedef uint32_t useconds_t;
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typedef int32_t suseconds_t;
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#ifdef CONFIG_SMP
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/* This is the smallest integer type that will hold a bitset of all CPUs */
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#if (CONFIG_SMP_NCPUS <= 8)
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typedef volatile uint8_t cpu_set_t;
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#elif (CONFIG_SMP_NCPUS <= 16)
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typedef volatile uint16_t cpu_set_t;
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#elif (CONFIG_SMP_NCPUS <= 32)
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typedef volatile uint32_t cpu_set_t;
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#else
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# error SMP: Extensions needed to support this number of CPUs
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#endif
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#else
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typedef volatile uint8_t cpu_set_t;
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#endif /* CONFIG_SMP */
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/* BSD types provided only to support porting to NuttX. */
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typedef unsigned char u_char;
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typedef unsigned short u_short;
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typedef unsigned int u_int;
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typedef unsigned long u_long;
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/* SYSV types provided only to support porting to NuttX. */
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typedef unsigned char unchar;
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typedef unsigned short ushort;
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typedef unsigned int uint;
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typedef unsigned long ulong;
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typedef signed char s_char;
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typedef FAR char *caddr_t;
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/* Task entry point */
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typedef CODE int (*main_t)(int argc, FAR char *argv[]);
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#endif /* __ASSEMBLY__ */
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#endif /* __INCLUDE_SYS_TYPES_H */
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