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SIGCHLD and sigaction()
Another question in the context of SIGCHLD:
When I install a SIGCHLD handler via sigaction() using SA_SIGINFO,
is it guaranteed that my handler is called (at least) once per
death-of-a-child? There is sentence in SUS
If SA_SIGINFO is set in sa_flags, then subsequent occurrences of sig
generated by sigqueue() or as a result of any signal-generating function
that supports the specification of an application-defined value (when sig
is already pending) shall be queued in FIFO order until delivered or accepted;
that may cover this but that I don't understand.
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