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2004-01-22 Thomas Pfaff <tpfaff@gmx.net>

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* libc/stdio/findfp.c (__sfp): Protect global FILE pointer list
        by a lock when newlib is multithreaded.
This commit is contained in:
Jeff Johnston
2004-01-22 22:06:57 +00:00
parent fba870ac94
commit ed1a95dc25
2 changed files with 17 additions and 0 deletions
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5
newlib/ChangeLog
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@@ -1,3 +1,8 @@
2004-01-22 Thomas Pfaff <tpfaff@gmx.net>
* libc/stdio/findfp.c (__sfp): Protect global FILE pointer list
by a lock when newlib is multithreaded.
2004-01-21 Jeff Johnston <jjohnstn@redhat.com> 2004-01-21 Jeff Johnston <jjohnstn@redhat.com>
* libc/stdlib/mbrtowc.c (_mbrtowc_r): Fix case where s is null * libc/stdlib/mbrtowc.c (_mbrtowc_r): Fix case where s is null

12
newlib/libc/stdio/findfp.c
View File

@@ -86,6 +86,12 @@ __sfp (d)
int n; int n;
struct _glue *g; struct _glue *g;
#ifndef __SINGLE_THREAD__
__LOCK_INIT(static, lock);
__lock_acquire(lock);
#endif
if (!_GLOBAL_REENT->__sdidinit) if (!_GLOBAL_REENT->__sdidinit)
__sinit (_GLOBAL_REENT); __sinit (_GLOBAL_REENT);
for (g = &_GLOBAL_REENT->__sglue;; g = g->_next) for (g = &_GLOBAL_REENT->__sglue;; g = g->_next)
@@ -97,11 +103,17 @@ __sfp (d)
(g->_next = __sfmoreglue (d, NDYNAMIC)) == NULL) (g->_next = __sfmoreglue (d, NDYNAMIC)) == NULL)
break; break;
} }
#ifndef __SINGLE_THREAD__
__lock_release(lock);
#endif
d->_errno = ENOMEM; d->_errno = ENOMEM;
return NULL; return NULL;
found: found:
fp->_flags = 1; /* reserve this slot; caller sets real flags */ fp->_flags = 1; /* reserve this slot; caller sets real flags */
#ifndef __SINGLE_THREAD__
__lock_release(lock);
#endif
fp->_p = NULL; /* no current pointer */ fp->_p = NULL; /* no current pointer */
fp->_w = 0; /* nothing to read or write */ fp->_w = 0; /* nothing to read or write */
fp->_r = 0; fp->_r = 0;