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sigpause(2) [bsd man page]

SIGPAUSE(2)							System Calls Manual						       SIGPAUSE(2)

NAME
sigpause - atomically release blocked signals and wait for interrupt SYNOPSIS
sigpause(sigmask) long sigmask; DESCRIPTION
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 0L to indicate that no signals are now to be blocked. Sigpause always terminates by being interrupted, returning -1 with errno set to EINTR. In normal usage, a signal is blocked using sigblock(2), to begin a critical section, variables modified on the occurrence of the signal are examined to determine that there is no work to be done, and the process pauses awaiting work by using sigpause with the mask returned by sigblock. SEE ALSO
sigblock(2), sigvec(2) 4th Berkeley Distribution May 15, 1986 SIGPAUSE(2)

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SIGPAUSE(2)						      BSD System Calls Manual						       SIGPAUSE(2)

NAME
sigpause -- atomically release blocked signals and wait for interrupt LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <signal.h> int sigpause(int sig); DESCRIPTION
This interface is made obsolete by sigsuspend(2). Sigpause() assigns sig to the set of masked signals and then waits for a signal to arrive; on return the set of masked signals is restored. Sig is usually 0, indicating that no signals are to be blocked. Sigpause() always terminates by being interrupted, returning -1 with errno set to EINTR. COMPATIBILITY
sigpause() now takes a signal value and not a mask. This often appears as a hang in sigpause$UNIX2003 or with sigpause() returning with errno set to EINVAL. Use sigsuspend() with signal masks. SEE ALSO
kill(2), sigaction(2), sigblock(2), sigprocmask(2), sigsuspend(2), sigvec(2) HISTORY
The sigpause() function call appeared in 4.2BSD and has been deprecated. BSD
June 2, 1993 BSD
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