sigpause - atomically release blocked signals and wait for interrupt
Standard C Library (libc, -lc)
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.
kill(2), sigaction(2), sigprocmask(2), sigsuspend(2), sigblock(3),
The sigpause() function call appeared in 4.2BSD and has been deprecated.
BSD June 2, 1993 BSD
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