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Annotation of 43BSDTahoe/man/man2/sigpause.2, revision 1.1.1.1

1.1       root        1: .\" Copyright (c) 1980 Regents of the University of California.
                      2: .\" All rights reserved.  The Berkeley software License Agreement
                      3: .\" specifies the terms and conditions for redistribution.
                      4: .\"
                      5: .\"    @(#)sigpause.2  6.2 (Berkeley) 5/15/86
                      6: .\"
                      7: .TH SIGPAUSE 2 "May 15, 1986"
                      8: .UC 4
                      9: .SH NAME
                     10: sigpause \- atomically release blocked signals and wait for interrupt
                     11: .SH SYNOPSIS
                     12: .ft B
                     13: sigpause(sigmask)
                     14: .br
                     15: int sigmask;
                     16: .ft R
                     17: .SH DESCRIPTION
                     18: .I Sigpause
                     19: assigns 
                     20: .I sigmask
                     21: to the set of masked signals
                     22: and then waits for a signal to arrive;
                     23: on return the set of masked signals is restored.
                     24: .I Sigmask
                     25: is usually 0 to indicate that no
                     26: signals are now to be blocked.
                     27: .I Sigpause
                     28: always terminates by being interrupted, returning \-1 with
                     29: .I errno
                     30: set to EINTR.
                     31: .PP
                     32: In normal usage, a signal is blocked using
                     33: .IR sigblock (2),
                     34: to begin a critical section, variables modified on the occurrence
                     35: of the signal are examined to determine that there is no work
                     36: to be done, and the process pauses awaiting work by using
                     37: .I sigpause
                     38: with the mask returned by
                     39: .IR sigblock .
                     40: .SH SEE ALSO
                     41: sigblock(2), sigvec(2)

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