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sigpause.2freebsd

BSD mandoc

NAME

sigpause - atomically release blocked signals and wait for interrupt

LIBRARY

Lb libc

SYNOPSIS

In signal.h Ft int Fn sigpause int sigmask

DESCRIPTION

This interface is made obsolete by sigsuspend(2).

The Fn sigpause function assigns Fa sigmask to the set of masked signals and then waits for a signal to arrive; on return the set of masked signals is restored. The Fa sigmask argument is usually 0 to indicate that no signals are to be blocked. The Fn sigpause function always terminates by being interrupted, returning -1 with errno set to Er EINTR

SEE ALSO

kill(2), sigaction(2), sigblock(2), sigprocmask(2), sigsuspend(2), sigvec(2)

STANDARDS

The Fn sigpause function is implemented for compatibility with historic BSD 4.3 applications. An incompatible interface by the same name, which used a single signal number rather than a mask, was present in AT&T System V , and was copied from there into the X/Open System Interfaces (XSI ) option of St -p1003.1-2001 .

HISTORY

The Fn sigpause function appeared in BSD 4.2 and has been deprecated.