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/****************************************************************************
* libc/lib_internal.h
*
* Copyright (C) 2007-2014 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 __LIBC_LIB_INTERNAL_H
#define __LIBC_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>
/****************************************************************************
* Pre-processor 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-library
* 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_BUILD_PROTECTED) && defined(__KERNEL__)) || \
defined(CONFIG_BUILD_KERNEL)
# include <nuttx/kmalloc.h>
/* Domain-specific allocations */
# define lib_malloc(s) kmm_malloc(s)
# define lib_zalloc(s) kmm_zalloc(s)
# define lib_realloc(p,s) kmm_realloc(p,s)
# define lib_memalign(p,s) kmm_memalign(p,s)
# define lib_free(p) kmm_free(p)
/* User-accessible allocations */
# define lib_umalloc(s) kumm_malloc(s)
# define lib_uzalloc(s) kumm_zalloc(s)
# define lib_urealloc(p,s) kumm_realloc(p,s)
# define lib_ufree(p) kumm_free(p)
#else
# include <stdlib.h>
/* Domain-specific allocations */
# 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)
/* User-accessible allocations */
# define lib_umalloc(s) malloc(s)
# define lib_uzalloc(s) zalloc(s)
# define lib_urealloc(p,s) realloc(p,s)
# define lib_ufree(p) free(p)
#endif
#define LIB_BUFLEN_UNKNOWN INT_MAX
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#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_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_libfgets.c */
FAR char *lib_fgets(FAR char *buf, size_t buflen, FILE *stream,
bool keepnl, bool consume);
/* 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
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __LIBC_LIB_INTERNAL_H */
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