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Diffstat (limited to 'nuttx/libc/lib_internal.h')
-rw-r--r-- | nuttx/libc/lib_internal.h | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/nuttx/libc/lib_internal.h b/nuttx/libc/lib_internal.h new file mode 100644 index 000000000..c09c751d4 --- /dev/null +++ b/nuttx/libc/lib_internal.h @@ -0,0 +1,211 @@ +/**************************************************************************** + * libc/lib_internal.h + * + * Copyright (C) 2007-2012 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. + * + ****************************************************************************/ + +#ifndef __LIB_LIB_INTERNAL_H +#define __LIB_LIB_INTERNAL_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <sys/types.h> +#include <stdbool.h> +#include <stdio.h> +#include <limits.h> +#include <semaphore.h> + +#include <nuttx/streams.h> + +/**************************************************************************** + * Definitions + ****************************************************************************/ +/* This configuration directory is used in environment variable processing + * when we need to reference the user's home directory. There are no user + * directories in NuttX so, by default, this always refers to the root + * directory. + */ + +#ifndef CONFIG_LIB_HOMEDIR +# define CONFIG_LIB_HOMEDIR "/" +#endif + +/* If C std I/O buffering is not supported, then we don't need its semaphore + * protection. + */ + +#if CONFIG_STDIO_BUFFER_SIZE <= 0 +# define lib_sem_initialize(s) +# define lib_take_semaphore(s) +# define lib_give_semaphore(s) +#endif + +/* The NuttX C library an be build in two modes: (1) as a standard, C-libary + * that can be used by normal, user-space applications, or (2) as a special, + * kernel-mode C-library only used within the OS. If NuttX is not being + * built as separated kernel- and user-space modules, then only the first + * mode is supported. + */ + +#if defined(CONFIG_NUTTX_KERNEL) && defined(__KERNEL__) +# include <nuttx/kmalloc.h> +# define lib_malloc(s) kmalloc(s) +# define lib_zalloc(s) kzalloc(s) +# define lib_realloc(p,s) krealloc(p,s) +# define lib_free(p) kfree(p) +#else +# include <stdlib.h> +# define lib_malloc(s) malloc(s) +# define lib_zalloc(s) zalloc(s) +# define lib_realloc(p,s) realloc(p,s) +# define lib_free(p) free(p) +#endif + +#define LIB_BUFLEN_UNKNOWN INT_MAX + +/**************************************************************************** + * Public Types + ****************************************************************************/ + +/**************************************************************************** + * Public Variables + ****************************************************************************/ + +/* Debug output is initially disabled */ + +#ifdef CONFIG_DEBUG_ENABLE +extern bool g_dbgenable; +#endif + +/**************************************************************************** + * Public Function Prototypes + ****************************************************************************/ + +/* Defined in lib_streamsem.c */ + +#if CONFIG_NFILE_STREAMS > 0 +void stream_semtake(FAR struct streamlist *list); +void stream_semgive(FAR struct streamlist *list); +#endif + +/* Defined in lib_libnoflush.c */ + +#ifdef CONFIG_STDIO_LINEBUFFER +int lib_noflush(FAR struct lib_outstream_s *this); +#endif + +/* Defined in lib_libsprintf.c */ + +int lib_sprintf(FAR struct lib_outstream_s *obj, + const char *fmt, ...); + +/* Defined lib_libvsprintf.c */ + +int lib_vsprintf(FAR struct lib_outstream_s *obj, + FAR const char *src, va_list ap); + +/* Defined lib_rawprintf.c */ + +int lib_rawvprintf(const char *src, va_list ap); + +/* Defined lib_lowprintf.c */ + +int lib_lowvprintf(const char *src, va_list ap); + +/* Defined in lib_dtoa.c */ + +#ifdef CONFIG_LIBC_FLOATINGPOINT +char *__dtoa(double d, int mode, int ndigits, int *decpt, int *sign, + char **rve); +#endif + +/* Defined in lib_libwrite.c */ + +ssize_t lib_fwrite(FAR const void *ptr, size_t count, FAR FILE *stream); + +/* Defined in lib_libfread.c */ + +ssize_t lib_fread(FAR void *ptr, size_t count, FAR FILE *stream); + +/* Defined in lib_libfflush.c */ + +ssize_t lib_fflush(FAR FILE *stream, bool bforce); + +/* Defined in lib_rdflush.c */ + +int lib_rdflush(FAR FILE *stream); + +/* Defined in lib_wrflush.c */ + +int lib_wrflush(FAR FILE *stream); + +/* Defined in lib_sem.c */ + +#if CONFIG_STDIO_BUFFER_SIZE > 0 +void lib_sem_initialize(FAR struct file_struct *stream); +void lib_take_semaphore(FAR struct file_struct *stream); +void lib_give_semaphore(FAR struct file_struct *stream); +#endif + +/* Defined in lib_libgetbase.c */ + +int lib_getbase(const char *nptr, const char **endptr); + +/* Defined in lib_skipspace.c */ + +void lib_skipspace(const char **pptr); + +/* Defined in lib_isbasedigit.c */ + +bool lib_isbasedigit(int ch, int base, int *value); + +/* Defined in lib_checkbase.c */ + +int lib_checkbase(int base, const char **pptr); + +/* Defined in lib_expi.c */ + +#ifdef CONFIG_LIBM +double lib_expi(size_t n); +#endif + +/* Defined in lib_libsqrtapprox.c */ + +#ifdef CONFIG_LIBM +float lib_sqrtapprox(float x); +#endif + +#endif /* __LIB_LIB_INTERNAL_H */ |