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