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-rw-r--r--libio/libio.h38
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));