diff options
Diffstat (limited to 'libio/libio.h')
| -rw-r--r-- | libio/libio.h | 38 |
1 files changed, 24 insertions, 14 deletions
diff --git a/libio/libio.h b/libio/libio.h index 405036dfb6..fce8a77bf7 100644 --- a/libio/libio.h +++ b/libio/libio.h @@ -148,15 +148,13 @@ typedef struct int (*close) __P ((struct _IO_FILE *)); } _IO_cookie_io_functions_t; +/* Handle lock. */ +#ifdef _IO_MTSAFE_IO +typedef pthread_mutex_t _IO_lock_t; +#else +typedef void _IO_lock_t; +#endif -/* The reentrant version of the libio implementation needs a semaphore for - each _IO_FILE struture. Because we don't know how the semaphore - will be implemented we try to be very general. */ -struct _IO_lock_t { - void *ptr; - short int field1; - short int field2; -}; /* A streammarker remembers a position in a buffer. */ @@ -217,7 +215,7 @@ struct _IO_FILE { /* char* _save_gptr; char* _save_egptr; */ - struct _IO_lock_t _IO_lock; + _IO_lock_t *_lock; }; #ifndef __cplusplus @@ -238,26 +236,38 @@ extern int __underflow __P((_IO_FILE*)); extern int __uflow __P((_IO_FILE*)); extern int __overflow __P((_IO_FILE*, int)); -#define _IO_getc(_fp) \ +#define _IO_getc_unlocked(_fp) \ ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end ? __uflow(_fp) \ : *(unsigned char*)(_fp)->_IO_read_ptr++) -#define _IO_peekc(_fp) \ +#define _IO_peekc_unlocked(_fp) \ ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end \ && __underflow(_fp) == EOF ? EOF \ : *(unsigned char*)(_fp)->_IO_read_ptr) -#define _IO_putc(_ch, _fp) \ +#define _IO_putc_unlocked(_ch, _fp) \ (((_fp)->_IO_write_ptr >= (_fp)->_IO_write_end) \ ? __overflow(_fp, (unsigned char)(_ch)) \ : (unsigned char)(*(_fp)->_IO_write_ptr++ = (_ch))) -#define _IO_feof(__fp) (((__fp)->_flags & _IO_EOF_SEEN) != 0) -#define _IO_ferror(__fp) (((__fp)->_flags & _IO_ERR_SEEN) != 0) +#define _IO_feof_unlocked(__fp) (((__fp)->_flags & _IO_EOF_SEEN) != 0) +#define _IO_ferror_unlocked(__fp) (((__fp)->_flags & _IO_ERR_SEEN) != 0) /* This one is for Emacs. */ #define _IO_PENDING_OUTPUT_COUNT(_fp) \ ((_fp)->_IO_write_ptr - (_fp)->_IO_write_base) +extern int _IO_getc_locked __P ((_IO_FILE *)); +extern int _IO_putc_locked __P ((int, _IO_FILE *)); + +extern void _IO_flockfile __P ((_IO_FILE *)); +extern void _IO_funlockfile __P ((_IO_FILE *)); + +#if !defined(_REENTRANT) && !defined(_THREAD_SAFE) +# define _IO_flockfile(FILE) /**/ +# define _IO_funlockfile(FILE) /**/ +#endif /* _REENTRANT || _THREAD_SAFE */ + + extern int _IO_vfscanf __P((_IO_FILE*, const char*, _IO_va_list, int*)); extern int _IO_vfprintf __P((_IO_FILE*, const char*, _IO_va_list)); extern _IO_ssize_t _IO_padn __P((_IO_FILE *, int, _IO_ssize_t)); |