mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-01-19 12:59:21 +08:00
ea99f21ce6
By default, Newlib uses a huge object of type struct _reent to store thread-specific data. This object is returned by __getreent() if the __DYNAMIC_REENT__ Newlib configuration option is defined. The reentrancy structure contains for example errno and the standard input, output, and error file streams. This means that if an application only uses errno it has a dependency on the file stream support even if it does not use it. This is an issue for lower end targets and applications which need to qualify the software according to safety standards (for example ECSS-E-ST-40C, ECSS-Q-ST-80C, IEC 61508, ISO 26262, DO-178, DO-330, DO-333). If the new _REENT_THREAD_LOCAL configuration option is enabled, then struct _reent is replaced by dedicated thread-local objects for each struct _reent member. The thread-local objects are defined in translation units which use the corresponding object.
82 lines
1.4 KiB
C
82 lines
1.4 KiB
C
#include <reent.h>
|
|
#include <newlib.h>
|
|
#include <wchar.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include "local.h"
|
|
|
|
#ifdef _REENT_THREAD_LOCAL
|
|
_Thread_local _mbstate_t _tls_wcrtomb_state;
|
|
#endif
|
|
|
|
size_t
|
|
_wcrtomb_r (struct _reent *ptr,
|
|
char *s,
|
|
wchar_t wc,
|
|
mbstate_t *ps)
|
|
{
|
|
int retval = 0;
|
|
char buf[10];
|
|
|
|
#ifdef _MB_CAPABLE
|
|
if (ps == NULL)
|
|
{
|
|
_REENT_CHECK_MISC(ptr);
|
|
ps = &(_REENT_WCRTOMB_STATE(ptr));
|
|
}
|
|
#endif
|
|
|
|
if (s == NULL)
|
|
retval = __WCTOMB (ptr, buf, L'\0', ps);
|
|
else
|
|
retval = __WCTOMB (ptr, s, wc, ps);
|
|
|
|
if (retval == -1)
|
|
{
|
|
ps->__count = 0;
|
|
_REENT_ERRNO(ptr) = EILSEQ;
|
|
return (size_t)(-1);
|
|
}
|
|
else
|
|
return (size_t)retval;
|
|
}
|
|
|
|
#ifndef _REENT_ONLY
|
|
size_t
|
|
wcrtomb (char *__restrict s,
|
|
wchar_t wc,
|
|
mbstate_t *__restrict ps)
|
|
{
|
|
#if defined(PREFER_SIZE_OVER_SPEED) || defined(__OPTIMIZE_SIZE__)
|
|
return _wcrtomb_r (_REENT, s, wc, ps);
|
|
#else
|
|
int retval = 0;
|
|
struct _reent *reent = _REENT;
|
|
char buf[10];
|
|
|
|
#ifdef _MB_CAPABLE
|
|
if (ps == NULL)
|
|
{
|
|
_REENT_CHECK_MISC(reent);
|
|
ps = &(_REENT_WCRTOMB_STATE(reent));
|
|
}
|
|
#endif
|
|
|
|
if (s == NULL)
|
|
retval = __WCTOMB (reent, buf, L'\0', ps);
|
|
else
|
|
retval = __WCTOMB (reent, s, wc, ps);
|
|
|
|
if (retval == -1)
|
|
{
|
|
ps->__count = 0;
|
|
_REENT_ERRNO(reent) = EILSEQ;
|
|
return (size_t)(-1);
|
|
}
|
|
else
|
|
return (size_t)retval;
|
|
#endif /* not PREFER_SIZE_OVER_SPEED */
|
|
}
|
|
#endif /* !_REENT_ONLY */
|