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2004-09-16 Antony King <antony.king@st.com>

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* libc/include/sys/lock.h: Replaced empty {} with (0) to conform
        with locking API.
        * libc/include/sys/stdio.h: (_flockfile)[!_SINGLE_THREAD]: Add
        check for__SSTR in _flags and if set, skip lock request.
        (_funlockfile)[!SINGLE_THREAD]: Ditto.
        * libc/stdio/local.h (CHECK_INIT): Added check that _REENT is
        not NULL.
        * libc/stdio/siprintf.c (siprintf, _siprintf_r): Added missing
        initialisation of _file to -1 in local FILE.
        * libc/stdio/snprintf.c (snprintf, _snprintf_r): Ditto.
        * libc/stdio/sscanf.c (sscanf, _sscanf_r): Ditto.
        * libc/stdio/vsnprintf.c (vsnprintf, _vsnprintf_r): Ditto.
        * libc/stdio/vsscanf.c (_vsscanf_r): Ditto.
        * libc/stdio/sscanf.c (sscanf, _sscanf_r): Added __SSTR flag to
        _flags in local FILE to prevent locking.
        * libc/stdio/vsscanf.c (_vsscanf_r): Ditto.
This commit is contained in:
Jeff Johnston 2004-09-16 21:30:51 +00:00
parent 7a0f696676
commit ed6859b8f0
9 changed files with 52 additions and 23 deletions
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19
newlib/ChangeLog
View File

@ -1,3 +1,22 @@
2004-09-16 Antony King <antony.king@st.com>
* libc/include/sys/lock.h: Replaced empty {} with (0) to conform
with locking API.
* libc/include/sys/stdio.h: (_flockfile)[!_SINGLE_THREAD]: Add
check for__SSTR in _flags and if set, skip lock request.
(_funlockfile)[!SINGLE_THREAD]: Ditto.
* libc/stdio/local.h (CHECK_INIT): Added check that _REENT is
not NULL.
* libc/stdio/siprintf.c (siprintf, _siprintf_r): Added missing
initialisation of _file to -1 in local FILE.
* libc/stdio/snprintf.c (snprintf, _snprintf_r): Ditto.
* libc/stdio/sscanf.c (sscanf, _sscanf_r): Ditto.
* libc/stdio/vsnprintf.c (vsnprintf, _vsnprintf_r): Ditto.
* libc/stdio/vsscanf.c (_vsscanf_r): Ditto.
* libc/stdio/sscanf.c (sscanf, _sscanf_r): Added __SSTR flag to
_flags in local FILE to prevent locking.
* libc/stdio/vsscanf.c (_vsscanf_r): Ditto.
2004-09-16 Antony King <antony.king@st.com>
* libc/stdio/fwalk.c (_fwalk): Remove check for _GLOBAL_REENT

20
newlib/libc/include/sys/lock.h
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@ -8,15 +8,15 @@ typedef int _LOCK_RECURSIVE_T;
#define __LOCK_INIT(class,lock) static int lock = 0;
#define __LOCK_INIT_RECURSIVE(class,lock) static int lock = 0;
#define __lock_init(lock) {}
#define __lock_init_recursive(lock) {}
#define __lock_close(lock) {}
#define __lock_close_recursive(lock) {}
#define __lock_acquire(lock) {}
#define __lock_acquire_recursive(lock) {}
#define __lock_try_acquire(lock) {}
#define __lock_try_acquire_recursive(lock) {}
#define __lock_release(lock) {}
#define __lock_release_recursive(lock) {}
#define __lock_init(lock) (0)
#define __lock_init_recursive(lock) (0)
#define __lock_close(lock) (0)
#define __lock_close_recursive(lock) (0)
#define __lock_acquire(lock) (0)
#define __lock_acquire_recursive(lock) (0)
#define __lock_try_acquire(lock) (0)
#define __lock_try_acquire_recursive(lock) (0)
#define __lock_release(lock) (0)
#define __lock_release_recursive(lock) (0)
#endif /* __SYS_LOCK_H__ */

8
newlib/libc/include/sys/stdio.h
View File

@ -5,10 +5,12 @@
#include <sys/reent.h>
/* Internal locking macros, used to protect stdio functions. In the
general case, expand to nothing. */
general case, expand to nothing. Use __SSTR flag in FILE _flags to
detect if FILE is private to sprintf/sscanf class of functions; if
set then do nothing as lock is not initialised. */
#if !defined(_flockfile)
#ifndef __SINGLE_THREAD__
# define _flockfile(fp) __lock_acquire_recursive(fp->_lock)
# define _flockfile(fp) (((fp)->_flags & __SSTR) ? 0 : __lock_acquire_recursive((fp)->_lock))
#else
# define _flockfile(fp)
#endif
@ -16,7 +18,7 @@
#if !defined(_funlockfile)
#ifndef __SINGLE_THREAD__
# define _funlockfile(fp) __lock_release_recursive(fp->_lock)
# define _funlockfile(fp) (((fp)->_flags & __SSTR) ? 0 : __lock_release_recursive((fp)->_lock))
#else
# define _funlockfile(fp)
#endif

10
newlib/libc/stdio/local.h
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@ -48,11 +48,11 @@ extern int _EXFUN(__srefill,(FILE *fp));
/* Called by the main entry point fns to ensure stdio has been initialized. */
#define CHECK_INIT(fp) \
do \
{ \
if (!_REENT->__sdidinit) \
__sinit (_REENT); \
} \
do \
{ \
if (_REENT && !_REENT->__sdidinit) \
__sinit (_REENT); \
} \
while (0)
/* Return true iff the given FILE cannot be written now. */

2
newlib/libc/stdio/siprintf.c
View File

@ -85,6 +85,7 @@ siprintf(str, fmt, va_alist)
f._flags = __SWR | __SSTR;
f._bf._base = f._p = (unsigned char *) str;
f._bf._size = f._w = INT_MAX;
f._file = -1; /* No file. */
#ifdef _HAVE_STDC
va_start (ap, fmt);
#else
@ -119,6 +120,7 @@ _siprintf_r(rptr, str, fmt, va_alist)
f._flags = __SWR | __SSTR;
f._bf._base = f._p = (unsigned char *) str;
f._bf._size = f._w = INT_MAX;
f._file = -1; /* No file. */
#ifdef _HAVE_STDC
va_start (ap, fmt);
#else

2
newlib/libc/stdio/snprintf.c
View File

@ -51,6 +51,7 @@ _snprintf_r(ptr, str, size, fmt, va_alist)
f._flags = __SWR | __SSTR;
f._bf._base = f._p = (unsigned char *) str;
f._bf._size = f._w = (size > 0 ? size - 1 : 0);
f._file = -1; /* No file. */
#ifdef _HAVE_STDC
va_start (ap, fmt);
#else
@ -86,6 +87,7 @@ snprintf(str, size, fmt, va_alist)
f._flags = __SWR | __SSTR;
f._bf._base = f._p = (unsigned char *) str;
f._bf._size = f._w = (size > 0 ? size - 1 : 0);
f._file = -1; /* No file. */
#ifdef _HAVE_STDC
va_start (ap, fmt);
#else

6
newlib/libc/stdio/sscanf.c
View File

@ -402,12 +402,13 @@ sscanf(str, fmt, va_alist)
va_list ap;
FILE f;
f._flags = __SRD;
f._flags = __SRD | __SSTR;
f._bf._base = f._p = (unsigned char *) str;
f._bf._size = f._r = strlen (str);
f._read = eofread;
f._ub._base = NULL;
f._lb._base = NULL;
f._file = -1; /* No file. */
#ifdef _HAVE_STDC
va_start (ap, fmt);
#else
@ -439,12 +440,13 @@ _sscanf_r(ptr, str, fmt, va_alist)
va_list ap;
FILE f;
f._flags = __SRD;
f._flags = __SRD | __SSTR;
f._bf._base = f._p = (unsigned char *) str;
f._bf._size = f._r = strlen (str);
f._read = eofread;
f._ub._base = NULL;
f._lb._base = NULL;
f._file = -1; /* No file. */
#ifdef _HAVE_STDC
va_start (ap, fmt);
#else

2
newlib/libc/stdio/vsnprintf.c
View File

@ -45,6 +45,7 @@ _DEFUN(vsnprintf, (str, size, fmt, ap),
f._flags = __SWR | __SSTR;
f._bf._base = f._p = (unsigned char *) str;
f._bf._size = f._w = (size > 0 ? size - 1 : 0);
f._file = -1; /* No file. */
ret = _vfprintf_r (_REENT, &f, fmt, ap);
if (size > 0)
*f._p = 0;
@ -67,6 +68,7 @@ _DEFUN(_vsnprintf_r, (ptr, str, size, fmt, ap),
f._flags = __SWR | __SSTR;
f._bf._base = f._p = (unsigned char *) str;
f._bf._size = f._w = (size > 0 ? size - 1 : 0);
f._file = -1; /* No file. */
ret = _vfprintf_r (ptr, &f, fmt, ap);
if (size > 0)
*f._p = 0;

6
newlib/libc/stdio/vsscanf.c
View File

@ -63,12 +63,12 @@ _DEFUN(_vsscanf_r, (ptr, str, fmt, ap),
{
FILE f;
f._flags = __SRD;
f._flags = __SRD | __SSTR;
f._bf._base = f._p = (unsigned char *) str;
f._bf._size = f._r = strlen (str);
f._read = eofread1;
f._ub._base = NULL;
f._lb._base = NULL;
return __svfscanf_r (ptr, &f, fmt, ap);
f._file = -1; /* No file. */
return __svfscanf_r (ptr, &f, fmt, ap);
}