NAME

       probe::signal.send.return - Signal being sent to a process completed (deprecated in
       SystemTap 2.1)

SYNOPSIS

       signal.send.return

VALUES

       retstr
           The return value to either __group_send_sig_info, specific_send_sig_info, or
           send_sigqueue

       name
           The name of the function used to send out the signal

       send2queue
           Indicates whether the sent signal was sent to an existing sigqueue

       shared
           Indicates whether the sent signal is shared by the thread group.

CONTEXT

       The signal's sender. (correct?)

DESCRIPTION

       Possible __group_send_sig_info and specific_send_sig_info return values are as follows;

       0 -- The signal is successfully sent to a process, which means that, (1) the signal was
       ignored by the receiving process, (2) this is a non-RT signal and the system already has
       one queued, and (3) the signal was successfully added to the sigqueue of the receiving
       process.

       -EAGAIN -- The sigqueue of the receiving process is overflowing, the signal was RT, and
       the signal was sent by a user using something other than kill.

       Possible send_group_sigqueue and send_sigqueue return values are as follows;

       0 -- The signal was either successfully added into the sigqueue of the receiving process,
       or a SI_TIMER entry is already queued (in which case, the overrun count will be simply
       incremented).

       1 -- The signal was ignored by the receiving process.

       -1 -- (send_sigqueue only) The task was marked exiting, allowing * posix_timer_event to
       redirect it to the group leader.