50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/*
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* Copyright (c) 2011, 2012, 2013, 2015 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* stdio/fflush.c
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* Flushes a FILE.
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*/
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#include <pthread.h>
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#include <stdio.h>
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static FILE* volatile dummy_file = NULL;
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weak_alias(dummy_file, __stdout_used);
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int fflush(FILE* fp)
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{
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if ( !fp )
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{
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int result = 0;
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pthread_mutex_lock(&__first_file_lock);
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if ( __stdout_used )
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fflush(__stdout_used);
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for ( fp = __first_file; fp; fp = fp->next )
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{
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flockfile(fp);
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if ( fp->flags & _FILE_LAST_WRITE )
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result |= fflush_unlocked(fp);
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funlockfile(fp);
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}
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pthread_mutex_unlock(&__first_file_lock);
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return result;
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}
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flockfile(fp);
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int ret = fflush_unlocked(fp);
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funlockfile(fp);
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return ret;
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}
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