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Where does the signal handler get executed in Python?
A Python signal handler does not get executed inside the low-level (C) signal handler. Instead, the low-level signal handler sets a flag which tells the virtual machine to execute the corresponding Python signal handler at a later point(for example at the next bytecode instruction).
How to use signal.sigusr1 in Python?
The following are 30 code examples for showing how to use signal.SIGUSR1 () . These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don’t like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Where do I send signalnum to in Python?
Send the signal signalnum to the thread thread_id, another thread in the same process as the caller. The target thread can be executing any code (Python or not). However, if the target thread is executing the Python interpreter, the Python signal handlers will be executed by the main thread.
Is there a handler for SIGCHLD in Python?
A handler for a particular signal, once set, remains installed until it is explicitly reset (Python emulates the BSD style interface regardless of the underlying implementation), with the exception of the handler for SIGCHLD, which follows the underlying implementation.
Which is the default handler for the signal?
This is one of two standard signal handling options; it will simply perform the default function for the signal. For example, on most systems the default action for SIGQUIT is to dump core and exit, while the default action for SIGCHLD is to simply ignore it. signal.
How to return the old signal mask in Python?
The signal mask is the set of signals whose delivery is currently blocked for the caller. Return the old signal mask as a set of signals. The behavior of the call is dependent on the value of how, as follows. SIG_BLOCK: The set of blocked signals is the union of the current set and the mask argument.