sig.3 revision da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.ds ;G \\*(;G\\f\\$1\\$3\\f\\$2
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.if !\\$4 .Af \\$2 \\$1 "\\$4" "\\$5" "\\$6" "\\$7" "\\$8" "\\$9"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.ie \\$3 .ft \\$1
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.nr ;G \\n(.f
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.Af "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7" "\\$8" "\\$9"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.ft \\n(;G \}
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.aF 5 \\n(.f "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.aF 5 1 "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.aF 1 5 "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.de EX \" start example
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.ta 1i 2i 3i 4i 5i 6i
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.de EE \" end example
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinsig \- signal interface routines
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.SH SYNOPSIS
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.L "#include <ast.h>"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.L "#include <sig.h>"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.L "int sigunblock(int sig);"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.L "int sigcritical(int op);"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.SH DESCRIPTION
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.L sigunblock
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinis called to
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinunblocks the signal
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinfrom within a handler currently servicing
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.L sigcritical
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chincontrols a critical region for the
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.LR SIGINT ,
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.L "op > 0"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinpushes the region,
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.L "op == 0"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinpops the region, and
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.L "op < 0"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinreturns non-zero if any signals are being held in the current
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chincritical region.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinSignal critical regions may be nested.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinThe current critical region level is returned,
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin.SH "SEE ALSO"