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probe::signal.send.return.3stap
Langue: en
Version: August 2010 (fedora - 01/12/10)
Section: 3 (Bibliothèques de fonctions)
NAME
probe::signal.send.return - Signal being sent to a process completedSYNOPSIS
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 sucessfully 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 sucessfully 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.
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