diff options
Diffstat (limited to 'contrib/perl5/eg/sysvipc/ipcsem')
-rw-r--r-- | contrib/perl5/eg/sysvipc/ipcsem | 46 |
1 files changed, 0 insertions, 46 deletions
diff --git a/contrib/perl5/eg/sysvipc/ipcsem b/contrib/perl5/eg/sysvipc/ipcsem deleted file mode 100644 index e0dc551..0000000 --- a/contrib/perl5/eg/sysvipc/ipcsem +++ /dev/null @@ -1,46 +0,0 @@ -#!/usr/bin/perl -eval 'exec /usr/bin/perl -S $0 ${1+"$@"}' - if $running_under_some_shell; - -require 'sys/ipc.ph'; -require 'sys/msg.ph'; - -$| = 1; - -$mode = shift; -die "usage: ipcmsg {r|s}\n" unless $mode =~ /^[rs]$/; -$signal = ($mode eq "s"); - -$id = semget(0x1234, 1, ($signal ? 0 : &IPC_CREAT) | 0644); -die "Can't get semaphore: $!\n" unless defined($id); -print "semaphore id: $id\n"; - -if ($signal) { - while (<STDIN>) { - print "Signalling\n"; - unless (semop($id, pack("sss", 0, 1, 0))) { - die "Can't signal semaphore: $!\n"; - } - } -} -else { - $SIG{'INT'} = $SIG{'QUIT'} = "leave"; - for (;;) { - unless (semop($id, pack("sss", 0, -1, 0))) { - die "Can't wait for semaphore: $!\n"; - } - print "Unblocked\n"; - } -} - -&leave; - -sub leave { - if (!$signal) { - $x = semctl($id, 0, &IPC_RMID, 0); - if (!defined($x) || $x < 0) { - die "Can't remove semaphore: $!\n"; - } - } - exit; -} |