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nuttx/include/sys/types.h
Xiang Xiao 77792a1598 sched: Define CONFIG_SMP_NCPUS to 1 in no SMP case 
to simplify the SMP related code logic

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-01-20 23:21:21 +08:00

310 lines
8.0 KiB
C
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/****************************************************************************
* include/sys/types.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __INCLUDE_SYS_TYPES_H
#define __INCLUDE_SYS_TYPES_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/compiler.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Alternative values for type bool (for historic reasons) */
#ifndef TRUE
# define TRUE 1
#endif
#ifndef FALSE
# define FALSE 0
#endif
/* NULL is usually defined in stddef.h (which includes this file) */
#ifndef NULL
/* SDCC is sensitive to NULL pointer type conversions, and C++ defines
* NULL as zero
*/
# if defined(SDCC) || defined(__SDCC) || defined(__cplusplus)
# define NULL (0)
# else
# define NULL ((void*)0)
# endif
#endif
#ifndef CONFIG_SMP_NCPUS
# define CONFIG_SMP_NCPUS 1
#endif
/* Scheduling Priorities.
*
* NOTES:
* - Only the idle task can take the true minimum priority.
* - These definitions are non-standard internal definitions and, for
* portability reasons, should not be used by application software.
*/
#define SCHED_PRIORITY_MAX 255
#define SCHED_PRIORITY_DEFAULT 100
#define SCHED_PRIORITY_MIN 1
#define SCHED_PRIORITY_IDLE 0
#if defined(CONFIG_FS_LARGEFILE) && defined(CONFIG_HAVE_LONG_LONG)
# define fsblkcnt64_t fsblkcnt_t
# define fsfilcnt64_t fsfilcnt_t
# define blkcnt64_t blkcnt_t
# define off64_t off_t
# define fpos64_t fpos_t
#endif
/****************************************************************************
* Type Declarations
****************************************************************************/
#ifndef __ASSEMBLY__
/* Misc. scalar types */
/* mode_t is an integer type used for file attributes. mode_t needs
* to be at least 16-bits but, in fact, must be sizeof(int) because it is
* passed via varargs.
*/
typedef unsigned int mode_t;
/* size_t is used for sizes of memory objects.
* ssize_t is used for a count of bytes or an error indication.
*
* See also definitions of SIZE_MAX et al in limits.h.
*
* REVISIT: size_t belongs in stddef.h
*/
#ifdef CONFIG_SMALL_MEMORY
typedef uint16_t size_t;
typedef int16_t ssize_t;
typedef uint16_t rsize_t;
#else /* CONFIG_SMALL_MEMORY */
typedef _size_t size_t;
typedef _ssize_t ssize_t;
typedef _size_t rsize_t;
#endif /* CONFIG_SMALL_MEMORY */
/* uid_t is used for user IDs
* gid_t is used for group IDs.
*/
typedef int16_t uid_t;
typedef int16_t gid_t;
/* dev_t is used for device IDs */
typedef uint16_t dev_t;
/* ino_t is used for file serial numbers */
typedef uint16_t ino_t;
/* nlink_t is used for link counts */
typedef uint16_t nlink_t;
/* pid_t is used for process IDs and process group IDs. It must be signed
* because negative PID values are used to represent invalid PIDs.
*/
typedef int16_t pid_t;
/* id_t is a general identifier that can be used to contain at least a pid_t,
* uid_t, or gid_t.
*/
typedef int16_t id_t;
/* Unix requires a key of type key_t defined in file sys/types.h for
* requesting resources such as shared memory segments, message queues and
* semaphores. A key is simply an integer of type key_t
*/
typedef int16_t key_t;
/* Signed integral type of the result of subtracting two pointers */
typedef intptr_t ptrdiff_t;
#if !defined(__cplusplus)
/* Wide character types. wchar_t is a built-in type in C++ and
* its declaration here may cause compilation errors on some compilers.
*
* REVISIT: wchar_t belongs in stddef.h
*/
typedef _wchar_t wchar_t;
#endif
/* wint_t
* An integral type capable of storing any valid value of wchar_t, or WEOF.
*/
typedef int wint_t;
/* wctype_t
* A scalar type of a data object that can hold values which represent
* locale-specific character classification.
*/
typedef int wctype_t;
#if defined(CONFIG_FS_LARGEFILE) && defined(CONFIG_HAVE_LONG_LONG)
/* Large file versions */
typedef uint64_t fsblkcnt_t;
typedef uint64_t fsfilcnt_t;
typedef uint64_t blkcnt_t;
typedef int64_t off_t;
typedef int64_t fpos_t;
#else
/* fsblkcnt_t and fsfilcnt_t shall be defined as unsigned integer types. */
typedef uint32_t fsblkcnt_t;
typedef uint32_t fsfilcnt_t;
/* blkcnt_t and off_t are signed integer types.
*
* blkcnt_t is used for file block counts.
* off_t is used for file offsets and sizes.
* fpos_t is used for file positions.
*
* Hence, all should be independent of processor architecture.
*/
typedef uint32_t blkcnt_t;
typedef int32_t off_t;
typedef int32_t fpos_t;
#endif
/* blksize_t is a signed integer value used for file block sizes */
typedef int16_t blksize_t;
/* Network related */
typedef unsigned int socklen_t;
#define __socklen_t_defined
typedef uint16_t sa_family_t;
/* Used for system times in clock ticks. This type is the natural width of
* the system timer.
*
* NOTE: The signed-ness of clock_t is not specified at OpenGroup.org. An
* unsigned type is used to support the full range of the internal clock.
*/
#ifdef CONFIG_SYSTEM_TIME64
typedef uint64_t clock_t;
#else
typedef uint32_t clock_t;
#endif
/* The type useconds_t shall be an unsigned integer type capable of storing
* values at least in the range [0, 1000000]. The type suseconds_t shall be
* a signed integer type capable of storing values at least in the range
* [-1, 1000000].
*/
typedef uint32_t useconds_t;
typedef int32_t suseconds_t;
/* This is the smallest integer type that will hold a bitset of all CPUs */
#if (CONFIG_SMP_NCPUS <= 8)
typedef volatile uint8_t cpu_set_t;
#elif (CONFIG_SMP_NCPUS <= 16)
typedef volatile uint16_t cpu_set_t;
#elif (CONFIG_SMP_NCPUS <= 32)
typedef volatile uint32_t cpu_set_t;
#else
# error SMP: Extensions needed to support this number of CPUs
#endif
/* BSD types provided only to support porting to NuttX. */
typedef unsigned char u_char;
typedef unsigned short u_short;
typedef unsigned int u_int;
typedef unsigned long u_long;
/* SYSV types provided only to support porting to NuttX. */
typedef unsigned char unchar;
typedef unsigned short ushort;
typedef unsigned int uint;
typedef unsigned long ulong;
typedef signed char s_char;
typedef FAR char *caddr_t;
/* These were defined by ISO C without the first `_'. */
typedef uint8_t u_int8_t;
typedef uint16_t u_int16_t;
typedef uint32_t u_int32_t;
#ifdef __INT24_DEFINED
typedef uint24_t u_int24_t;
#endif
#ifdef __INT64_DEFINED
typedef uint64_t u_int64_t;
#endif
/* Task entry point */
typedef CODE int (*main_t)(int argc, FAR char *argv[]);
/* POSIX-like OS return values: */
enum
{
ERROR = -1,
OK = 0,
};
#endif /* __ASSEMBLY__ */
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#endif /* __INCLUDE_SYS_TYPES_H */
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