diff options
Diffstat (limited to 'newlib/libc/stdio/feof.c')
| -rw-r--r-- | newlib/libc/stdio/feof.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/newlib/libc/stdio/feof.c b/newlib/libc/stdio/feof.c index c0216ffed..7aadd8209 100644 --- a/newlib/libc/stdio/feof.c +++ b/newlib/libc/stdio/feof.c @@ -17,24 +17,44 @@ /* FUNCTION -<<feof>>---test for end of file +<<feof>>, <<feof_unlocked>>---test for end of file INDEX feof +INDEX + feof_unlocked ANSI_SYNOPSIS #include <stdio.h> int feof(FILE *<[fp]>); + #define _BSD_SOURCE + #include <stdio.h> + int feof_unlocked(FILE *<[fp]>); + TRAD_SYNOPSIS #include <stdio.h> int feof(<[fp]>) FILE *<[fp]>; + #define _BSD_SOURCE + #include <stdio.h> + int feof_unlocked(<[fp]>) + FILE *<[fp]>; + DESCRIPTION <<feof>> tests whether or not the end of the file identified by <[fp]> has been reached. +<<feof_unlocked>> is a non-thread-safe version of <<feof>>. +<<feof_unlocked>> may only safely be used within a scope +protected by flockfile() (or ftrylockfile()) and funlockfile(). This +function may safely be used in a multi-threaded program if and only +if they are called while the invoking thread owns the (FILE *) +object, as is the case after a successful call to the flockfile() or +ftrylockfile() functions. If threads are disabled, then +<<feof_unlocked>> is equivalent to <<feof>>. + RETURNS <<feof>> returns <<0>> if the end of file has not yet been reached; if at end of file, the result is nonzero. @@ -42,6 +62,8 @@ at end of file, the result is nonzero. PORTABILITY <<feof>> is required by ANSI C. +<<feof_unlocked>> is a BSD extension also provided by GNU libc. + No supporting OS subroutines are required. */ |