252 lines
7.1 KiB
C
252 lines
7.1 KiB
C
/****************************************************************************
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* libc/lib_internal.h
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*
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* Copyright (C) 2007-2014 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 __LIBC_LIB_INTERNAL_H
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#define __LIBC_LIB_INTERNAL_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 <sys/types.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <limits.h>
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#include <semaphore.h>
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#include <nuttx/streams.h>
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/* This configuration directory is used in environment variable processing
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* when we need to reference the user's home directory. There are no user
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* directories in NuttX so, by default, this always refers to the root
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* directory.
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*/
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#ifndef CONFIG_LIB_HOMEDIR
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# define CONFIG_LIB_HOMEDIR "/"
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#endif
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/* If C std I/O buffering is not supported, then we don't need its semaphore
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* protection.
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*/
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#if CONFIG_STDIO_BUFFER_SIZE <= 0
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# define lib_sem_initialize(s)
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# define lib_take_semaphore(s)
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# define lib_give_semaphore(s)
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#endif
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/* The NuttX C library an be build in two modes: (1) as a standard, C-library
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* that can be used by normal, user-space applications, or (2) as a special,
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* kernel-mode C-library only used within the OS. If NuttX is not being
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* built as separated kernel- and user-space modules, then only the first
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* mode is supported.
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*/
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#if defined(CONFIG_NUTTX_KERNEL) && defined(__KERNEL__)
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# include <nuttx/kmalloc.h>
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/* Domain-specific allocations */
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# define lib_malloc(s) kmalloc(s)
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# define lib_zalloc(s) kzalloc(s)
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# define lib_realloc(p,s) krealloc(p,s)
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# define lib_memalign(p,s) krealloc(p,s)
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# define lib_free(p) kfree(p)
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/* User-accessible allocations */
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# define lib_umalloc(s) kumalloc(s)
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# define lib_uzalloc(s) kuzalloc(s)
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# define lib_urealloc(p,s) kurealloc(p,s)
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# define lib_ufree(p) kufree(p)
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#else
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# include <stdlib.h>
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/* Domain-specific allocations */
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# define lib_malloc(s) malloc(s)
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# define lib_zalloc(s) zalloc(s)
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# define lib_realloc(p,s) realloc(p,s)
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# define lib_free(p) free(p)
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/* User-accessible allocations */
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# define lib_umalloc(s) malloc(s)
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# define lib_uzalloc(s) zalloc(s)
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# define lib_urealloc(p,s) realloc(p,s)
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# define lib_ufree(p) free(p)
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#endif
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#define LIB_BUFLEN_UNKNOWN INT_MAX
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Variables
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/* Debug output is initially disabled */
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#ifdef CONFIG_SYSLOG_ENABLE
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EXTERN bool g_syslogenable;
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/* Defined in lib_streamsem.c */
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#if CONFIG_NFILE_STREAMS > 0
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void stream_semtake(FAR struct streamlist *list);
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void stream_semgive(FAR struct streamlist *list);
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#endif
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/* Defined in lib_libnoflush.c */
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#ifdef CONFIG_STDIO_LINEBUFFER
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int lib_noflush(FAR struct lib_outstream_s *this);
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#endif
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/* Defined in lib_libsnoflush.c */
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#ifdef CONFIG_STDIO_LINEBUFFER
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int lib_snoflush(FAR struct lib_sostream_s *this);
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#endif
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/* Defined in lib_libsprintf.c */
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int lib_sprintf(FAR struct lib_outstream_s *obj,
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const char *fmt, ...);
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/* Defined lib_libvsprintf.c */
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int lib_vsprintf(FAR struct lib_outstream_s *obj,
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FAR const char *src, va_list ap);
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/* Defined in lib_dtoa.c */
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#ifdef CONFIG_LIBC_FLOATINGPOINT
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char *__dtoa(double d, int mode, int ndigits, int *decpt, int *sign,
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char **rve);
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#endif
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/* Defined in lib_libwrite.c */
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ssize_t lib_fwrite(FAR const void *ptr, size_t count, FAR FILE *stream);
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/* Defined in lib_libfread.c */
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ssize_t lib_fread(FAR void *ptr, size_t count, FAR FILE *stream);
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/* Defined in lib_libfgets.c */
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FAR char *lib_fgets(FAR char *buf, size_t buflen, FILE *stream,
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bool keepnl, bool consume);
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/* Defined in lib_libfflush.c */
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ssize_t lib_fflush(FAR FILE *stream, bool bforce);
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/* Defined in lib_rdflush.c */
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int lib_rdflush(FAR FILE *stream);
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/* Defined in lib_wrflush.c */
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int lib_wrflush(FAR FILE *stream);
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/* Defined in lib_sem.c */
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#if CONFIG_STDIO_BUFFER_SIZE > 0
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void lib_sem_initialize(FAR struct file_struct *stream);
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void lib_take_semaphore(FAR struct file_struct *stream);
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void lib_give_semaphore(FAR struct file_struct *stream);
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#endif
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/* Defined in lib_libgetbase.c */
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int lib_getbase(const char *nptr, const char **endptr);
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/* Defined in lib_skipspace.c */
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void lib_skipspace(const char **pptr);
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/* Defined in lib_isbasedigit.c */
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bool lib_isbasedigit(int ch, int base, int *value);
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/* Defined in lib_checkbase.c */
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int lib_checkbase(int base, const char **pptr);
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/* Defined in lib_expi.c */
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#ifdef CONFIG_LIBM
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double lib_expi(size_t n);
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#endif
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/* Defined in lib_libsqrtapprox.c */
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#ifdef CONFIG_LIBM
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float lib_sqrtapprox(float x);
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#endif
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __LIBC_LIB_INTERNAL_H */
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