1PROBE::SIGNAL.SEND(3stap) Signal Tapset PROBE::SIGNAL.SEND(3stap)
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6 probe::signal.send.return - Signal being sent to a process completed
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9 signal.send.return
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12 retstr
13 The return value to either __group_send_sig_info,
14 specific_send_sig_info, or send_sigqueue
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16 send2queue
17 Indicates whether the sent signal was sent to an existing sigqueue
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19 name
20 The name of the function used to send out the signal
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22 shared
23 Indicates whether the sent signal is shared by the thread group.
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26 The signal's sender. (correct?)
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29 Possible __group_send_sig_info and specific_send_sig_info return values
30 are as follows;
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32 0 -- The signal is sucessfully sent to a process,
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35 (1) the signal was ignored by the receiving process, (2) this is a
36 non-RT signal and the system already has one queued, and (3) the signal
37 was successfully added to the sigqueue of the receiving process.
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39 -EAGAIN -- The sigqueue of the receiving process is overflowing, the
40 signal was RT, and the signal was sent by a user using something other
41 than kill.
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43 Possible send_group_sigqueue and send_sigqueue return values are as
44 follows;
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46 0 -- The signal was either sucessfully added into the sigqueue of the
47 receiving process, or a SI_TIMER entry is already queued (in which
48 case, the overrun count will be simply incremented).
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50 1 -- The signal was ignored by the receiving process.
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52 -1 -- (send_sigqueue only) The task was marked exiting, allowing *
53 posix_timer_event to redirect it to the group leader.
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57SystemTap Tapset Reference August 2011 PROBE::SIGNAL.SEND(3stap)