Signal(4)
Signal(4) DEVICES AND NETWORK INTERFACES Signal(4)
NAME
Signal request - send a (POSIX-style) signal to a tool
SYNOPSIS
Signal(in string theSignal);
DESCRIPTION
The Signal request asks the handling procid to send itself
the indicated POSIX signal.
The theSignal argument is the signal to send.
APPLICATION USAGE
The ttdt_session_join(3), function can be used to register
for, and transparently process, the Signal request.
EXAMPLES
The Signal request can be sent as in the following example:
Tt_message msg = tttk_message_create(0, TT_REQUEST, TT_SESSION,
the_recipient_procid, TTDT_SIGNAL,
my_callback);
tt_message_arg_add(msg, TT_IN, Tttk_string, "SIGHUP");
tt_message_send(msg);
WARNINGS
Signal can also be sent as a multicast notice, as an edict
to all tools in the scope of the message. The consequences
of doing so can be severe and unexpected.
SEE ALSO
sigaction(2) tt_message_arg_add(3), tt_message_send(3),
ttdt_session_join(3),
Unix System LaboratorLast change: 13 May 1994 1
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