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Use __builtin_expect in _IO_getc_unlocked, _IO_peekc_unlocked, _IO_ptc_unlcoked, _IO_getwc_unlocked, and _IO_putwc_unlocked.

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This commit is contained in:
Ulrich Drepper 2003-12-28 22:47:59 +00:00
parent caac9ddbd3
commit 63b8eae47a
1 changed files with 14 additions and 6 deletions
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20
libio/libio.h
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@ -407,23 +407,31 @@ extern _IO_wint_t __wunderflow (_IO_FILE *) __THROW;
extern _IO_wint_t __wuflow (_IO_FILE *) __THROW;
extern _IO_wint_t __woverflow (_IO_FILE *, _IO_wint_t) __THROW;
#if __GNUC__ >= 3
# define _IO_BE(expr, res) __builtin_expect (expr, res)
#else
# define _IO_BE(expr, res) (expr)
#endif
#define _IO_getc_unlocked(_fp) \
((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end ? __uflow (_fp) \
: *(unsigned char *) (_fp)->_IO_read_ptr++)
(_IO_BE ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end, 0) \
? __uflow (_fp) : *(unsigned char *) (_fp)->_IO_read_ptr++)
#define _IO_peekc_unlocked(_fp) \
((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end \
(_IO_BE ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end, 0) \
&& __underflow (_fp) == EOF ? EOF \
: *(unsigned char *) (_fp)->_IO_read_ptr)
#define _IO_putc_unlocked(_ch, _fp) \
(((_fp)->_IO_write_ptr >= (_fp)->_IO_write_end) \
(_IO_BE ((_fp)->_IO_write_ptr >= (_fp)->_IO_write_end, 0) \
? __overflow (_fp, (unsigned char) (_ch)) \
: (unsigned char) (*(_fp)->_IO_write_ptr++ = (_ch)))
#define _IO_getwc_unlocked(_fp) \
((_fp)->_wide_data->_IO_read_ptr >= (_fp)->_wide_data->_IO_read_end \
(_IO_BE ((_fp)->_wide_data->_IO_read_ptr >= (_fp)->_wide_data->_IO_read_end,\
0) \
? __wuflow (_fp) : (_IO_wint_t) *(_fp)->_wide_data->_IO_read_ptr++)
#define _IO_putwc_unlocked(_wch, _fp) \
((_fp)->_wide_data->_IO_write_ptr >= (_fp)->_wide_data->_IO_write_end \
(_IO_BE ((_fp)->_wide_data->_IO_write_ptr \
>= (_fp)->_wide_data->_IO_write_end, 0) \
? __woverflow (_fp, _wch) \
: (_IO_wint_t) (*(_fp)->_wide_data->_IO_write_ptr++ = (_wch)))