SIGINTERRUPT(P) POSIX Programmer's Manual SIGINTERRUPT(P)NAMEsiginterrupt - allow signals to interrupt functions
SYNOPSIS
#include <signal.h>
int siginterrupt(int sig, int flag);
DESCRIPTION
The siginterrupt() function shall change the restart behavior when a
function is interrupted by the specified signal. The function siginter‐
rupt(sig, flag) has an effect as if implemented as:
int siginterrupt(int sig, int flag) {
int ret;
struct sigaction act;
(void) sigaction(sig, NULL, &act);
if (flag)
act.sa_flags &= ~SA_RESTART;
else
act.sa_flags |= SA_RESTART;
ret = sigaction(sig, &act, NULL);
return ret;
}
RETURN VALUE
Upon successful completion, siginterrupt() shall return 0; otherwise,
-1 shall be returned and errno set to indicate the error.
ERRORS
The siginterrupt() function shall fail if:
EINVAL The sig argument is not a valid signal number.
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
The siginterrupt() function supports programs written to historical
system interfaces. A conforming application, when being written or
rewritten, should use sigaction() with the SA_RESTART flag instead of
siginterrupt().
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
Signal Concepts , sigaction() , the Base Definitions volume of
IEEE Std 1003.1-2001, <signal.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online
at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 SIGINTERRUPT(P)
