signal.send.return
Name
signal.send.return — Signal being sent to a process completed
Synopsis
signal.send.return
Values
retstr- The return value to either
__group_send_sig_info,specific_send_sig_info, orsend_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.
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.
