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Diffstat (limited to 'manual/stdio.texi')
| -rw-r--r-- | manual/stdio.texi | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/manual/stdio.texi b/manual/stdio.texi index 02236e3..e922fd1 100644 --- a/manual/stdio.texi +++ b/manual/stdio.texi @@ -279,6 +279,27 @@ you are using NFS. The function @code{fclose} is declared in @file{stdio.h}. @end deftypefun +To close all streams currently available the GNU C Library provides +another function. + +@comment stdio.h +@comment GNU +@deftypefun int fcloseall (void) +This function causes all open streams of the process to be closed and +the connection to corresponding files to be broken. All buffered data +is written and any buffered inputis discarded. The @code{fcloseall} +function returns a value of @code{0} if all the files were closed +successfully, and @code{EOF} if an error was detected. + +This function should be used in only in special situation, e.g., when an +error occurred and the program must be aborted. Normally each single +stream should be closed separately so that problems with one stream can +be identifier. It is also problematic since the standard streams +(@pxref{Standard Streams}) will also be closed. + +The function @code{fcloseall} is declared in @file{stdio.h}. +@end deftypefun + If the @code{main} function to your program returns, or if you call the @code{exit} function (@pxref{Normal Termination}), all open streams are automatically closed properly. If your program terminates in any other |