newlib/libc/include/stdio_ext.h

   1 /*
   2  * stdio_ext.h
   3  *
   4  * Definitions for I/O internal operations, originally from Solaris.
   5  */
   6
   7 #ifndef _STDIO_EXT_H_
   8 #define _STDIO_EXT_H_
   9
  10 #ifdef __rtems__
  11 #error "<stdio_ext.h> not supported"
  12 #endif
  13
  14 #include <stdio.h>
  15
  16 #define FSETLOCKING_QUERY       0
  17 #define FSETLOCKING_INTERNAL    1
  18 #define FSETLOCKING_BYCALLER    2
  19
  20 _BEGIN_STD_C
  21
  22 void     __fpurge (FILE *);
  23 int      __fsetlocking (FILE *, int);
  24
  25 /* TODO:
  26
  27    void _flushlbf (void);
  28 */
  29
  30 #ifdef  __GNUC__
  31
  32 _ELIDABLE_INLINE size_t
  33 __fbufsize (FILE *__fp) { return (size_t) __fp->_bf._size; }
  34
  35 _ELIDABLE_INLINE int
  36 __freading (FILE *__fp) { return (__fp->_flags & __SRD) != 0; }
  37
  38 _ELIDABLE_INLINE int
  39 __fwriting (FILE *__fp) { return (__fp->_flags & __SWR) != 0; }
  40
  41 _ELIDABLE_INLINE int
  42 __freadable (FILE *__fp) { return (__fp->_flags & (__SRD | __SRW)) != 0; }
  43
  44 _ELIDABLE_INLINE int
  45 __fwritable (FILE *__fp) { return (__fp->_flags & (__SWR | __SRW)) != 0; }
  46
  47 _ELIDABLE_INLINE int
  48 __flbf (FILE *__fp) { return (__fp->_flags & __SLBF) != 0; }
  49
  50 _ELIDABLE_INLINE size_t
  51 __fpending (FILE *__fp) { return __fp->_p - __fp->_bf._base; }
  52
  53 #else
  54
  55 size_t   __fbufsize (FILE *);
  56 int      __freading (FILE *);
  57 int      __fwriting (FILE *);
  58 int      __freadable (FILE *);
  59 int      __fwritable (FILE *);
  60 int      __flbf (FILE *);
  61 size_t   __fpending (FILE *);
  62
  63 #ifndef __cplusplus
  64
  65 #define __fbufsize(__fp) ((size_t) (__fp)->_bf._size)
  66 #define __freading(__fp) (((__fp)->_flags & __SRD) != 0)
  67 #define __fwriting(__fp) (((__fp)->_flags & __SWR) != 0)
  68 #define __freadable(__fp) (((__fp)->_flags & (__SRD | __SRW)) != 0)
  69 #define __fwritable(__fp) (((__fp)->_flags & (__SWR | __SRW)) != 0)
  70 #define __flbf(__fp) (((__fp)->_flags & __SLBF) != 0)
  71 #define __fpending(__fp) ((size_t) ((__fp)->_p - (__fp)->_bf._base))
  72
  73 #endif /* __cplusplus */
  74
  75 #endif /* __GNUC__ */
  76
  77 _END_STD_C
  78
  79 #endif /* _STDIO_EXT_H_ */