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http://man7.org/linux/man-pages/man2/signalfd.2.html
The signalfd file descriptor also supports the other file- descriptor multiplexing APIs: pselect(2), ppoll(2), and epoll(7). close(2) When the file descriptor is no longer required it should be closed. When all file descriptors associated with the same signalfd object have been closed, the resources for object are freed by the kernel.
https://www.systutorials.com/docs/linux/man/2-signalfd/
signalfd() is available on Linux since kernel 2.6.22. Working support is provided in glibc since version 2.8. The signalfd4() system call (see NOTES) is available on Linux since kernel 2.6.27. CONFORMING TO signalfd() and signalfd4() are Linux-specific. NOTES A process can create multiple signalfd …
https://news.ycombinator.com/item?id=9564975
May 18, 2015 · Another weirdness about signalfd: read() from a signalfd returns signals for the calling process, regardless of what process created the signalfd (e.g. it could have been inherited through fork()). That's arguably usually what you want, but is inconsistent with usual file descriptor semantics, which say that it doesn't matter who read()s.
https://kvmdedicated.blogspot.com/2010/06/upgrading-vps-to-2010-version-of-linux.html
It is perhaps more likely that you do not know if you have signalfd() support, and want to do a test function call. The signalfd() manpage provides a good summary and some test code: signalfd() is available on Linux since kernel 2.6.22. Working support is provided in glibc since version 2.8.
https://stackoverflow.com/questions/25717766/signalfd-misses-signals
In the program, process spawns a thread which create signalfd and starts using poll. Then process spawns a child process which sends SIGUSR1 to the parent process. When signals are send at the interval of 1s, then it processes all the signals. However, when sleep is removed, it missed notification.
https://github.com/pauloborges/bluez/blob/master/configure.ac
Oct 04, 2013 · Contribute to pauloborges/bluez development by creating an account on GitHub. My bluez tree. Contribute to pauloborges/bluez development by creating an account on GitHub. ... AC_MSG_ERROR (signalfd support is required)) AC_CHECK_LIB (rt, clock_gettime, dummy=yes, AC_MSG_ERROR (realtime clock support is required)) AC_CHECK_LIB (pthread, pthread ...
https://github.com/MayfieldRoboticsPublic/bluez/blob/master/configure.ac
Contribute to MayfieldRoboticsPublic/bluez development by creating an account on GitHub. Join GitHub today. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
https://stackoverflow.com/questions/25607579/how-to-use-signalfd-and-epoll-to-get-event-when-my-child-process-exit
regarding "do what the parent needs to do when it receives SIGCHLD". In particular is wait()/waitpid()/waitid() required? Seems you get the same info already in signalfd_siginfo so maybe not? – cheshirekow Aug 3 '18 at 23:04
https://kernel.googlesource.com/pub/scm/bluetooth/bluez/+/5.6/configure.ac
Sign in. kernel / pub / scm / bluetooth / bluez / 5.6 / . / configure.ac. blob: 22a68253972ac7f7d30204af05e7b0bbe8f78f1e [] [] []
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