PROBE::SIGNAL.SEND(3stap) Signal Tapset PROBE::SIGNAL.SEND(3stap)NAMEprobe::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
send2queue
Indicates whether the sent signal was sent to an existing sigqueue
name
The name of the function used to send out the signal
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.
SystemTap Tapset Reference March 2013 PROBE::SIGNAL.SEND(3stap)
