#include <signal.h>
int sigemptyset(sigset_t *set);
The sigemptyset()
function manipulates sets of signals. It operates on data objects
that the application addresses. It does not operate on any set of
signals known to the system (such as the set blocked from
delivery to a process or the set pending for a process).
sigemptyset()
initializes the signal set that set points to exclude all
signals that the system defines.
Applications call either sigemptyset()
or sigfillset() at least once for each object of
type sigset_t prior to any other use of that object.
If such an object is not initialized in this way, the results are
not defined.
- set
-
Points to a signal set to empty.
If successful, sigemptyset()
returns a value of zero. On failure, it returns a value of -1 and
sets errno to one of the following values:
- EFAULT
-
set is an invalid pointer.
POSIX.1 (1996).
Async-signal-safe.
None.
PTC MKS Toolkit for Professional Developers
PTC MKS Toolkit for Professional Developers 64-Bit Edition
PTC MKS Toolkit for Enterprise Developers
PTC MKS Toolkit for Enterprise Developers 64-Bit Edition
- Functions:
- sigaction(), sigaddset(), sigdelset(), sigfillset(), sigismember()
PTC MKS Toolkit 10.4 Documentation Build 39.