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Diffstat (limited to 'Doc/library/signal.rst')
| -rw-r--r-- | Doc/library/signal.rst | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Doc/library/signal.rst b/Doc/library/signal.rst index d3c498d..920752b 100644 --- a/Doc/library/signal.rst +++ b/Doc/library/signal.rst @@ -110,6 +110,20 @@ The :mod:`signal` module defines the following functions: :manpage:`signal(2)`.) +.. function:: set_wakeup_fd(fd) + + Set the wakeup fd to *fd*. When a signal is received, a ``'\0'`` byte is + written to the fd. This can be used by a library to wakeup a poll or select + call, allowing the signal to be fully processed. + + The old wakeup fd is returned. *fd* must be non-blocking. It is up to the + library to remove any bytes before calling poll or select again. + + When threads are enabled, this function can only be called from the main thread; + attempting to call it from other threads will cause a :exc:`ValueError` + exception to be raised. + + .. function:: signal(signalnum, handler) Set the handler for signal *signalnum* to the function *handler*. *handler* can |