Package: manpages-dev
Version: 2.17-1
Severity: normal
File: /usr/share/man/man2/kill.2.gz
The nots section of the kill man page contains this paragraph:
POSIX 1003.1-2003 requires that if a process sends a signal to
itself, and that process does not have the signal blocked, and no
other thread has it unblocked or is waiting for it in sigwait(),
at least one unblocked signal must be delivered to the sending
thread before the call of kill() returns.
Presumably this means that if a thread which doesn't have the signal
blocked in its mask raises the signal, it is gauranteed to get it
before kill returns even if all other threads do have it blocked, but
it would be nice if this were stated explicitly. Probably language
elsewhere in the standard makes this clear, but this excert taken in
isolation leaves some room for doubt, especially given the history of
thread implementation on linux.
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