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| author | Roland McGrath <roland@gnu.org> | 2004-07-12 21:44:33 +0000 |
|---|---|---|
| committer | Roland McGrath <roland@gnu.org> | 2004-07-12 21:44:33 +0000 |
| commit | 36634622ab6bcdbbaee92a6c9d88898d5352c7fb (patch) | |
| tree | 6be23e0d6c4f6d4e749270269a77ae8652de1870 | |
| parent | ee600e3f76afbdc92c3258c362b6c061ada58b21 (diff) | |
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2004-07-12 Roland McGrath <roland@redhat.com>
* manual/signal.texi (Interrupted Primitives): Make clear that
TEMP_FAILURE_RETRY evaluates its expression as long int and compares
it to -1 to define "failure".
| -rw-r--r-- | manual/signal.texi | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/manual/signal.texi b/manual/signal.texi index 2c06c6ca2d..1d28f74027 100644 --- a/manual/signal.texi +++ b/manual/signal.texi @@ -2083,9 +2083,12 @@ temporary failure, with the macro @code{TEMP_FAILURE_RETRY}: @comment unistd.h @comment GNU @defmac TEMP_FAILURE_RETRY (@var{expression}) -This macro evaluates @var{expression} once. If it fails and reports -error code @code{EINTR}, @code{TEMP_FAILURE_RETRY} evaluates it again, -and over and over until the result is not a temporary failure. +This macro evaluates @var{expression} once, and examines its value as +type @code{long int}. If the value equals @code{-1}, that indicates a +failure and @code{errno} should be set to show what kind of failure. +If it fails and reports error code @code{EINTR}, +@code{TEMP_FAILURE_RETRY} evaluates it again, and over and over until +the result is not a temporary failure. The value returned by @code{TEMP_FAILURE_RETRY} is whatever value @var{expression} produced. |