sigpause - atomically release blocked signals and wait for
       interrupt


SYNOPSIS

       #include <signal.h>

       int sigpause(int sigmask);


DESCRIPTION

       This interface is made obsolete by sigsuspend(2).

       sigpause assigns sigmask to the set of masked signals  and
       then  waits  for  a signal to arrive; on return the set of
       masked signals is restored.

       sigmask is usually 0 to indicate that no signals are to be
       blocked.  sigpause always terminates by being interrupted,
       returning -1 with errno set to EINTR.


CONFORMING TO

       4.4BSD.  The sigpause function call appeared in 4.3BSD and
       is deprecated.


SEE ALSO

       sigsuspend(2), kill(2), sigaction(2), sigprocmask(2), sig­
       block(2), sigvec(2)


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