Your code is ignoring SIGSEGV instead of catching it. Recall that the instruction that triggered the signal is restarted after handling the signal. In your case, handling the signal didn’t change anything so the next time round the offending instruction is tried, it fails the same way. If you intend to catch the signal change … Read more
After some trial and error I found out how to interprete the results of scipy.signal.deconvolve() and I post my findings as an answer. Let’s start with a working example code import numpy as np import scipy.signal import matplotlib.pyplot as plt # let the signal be box-like signal = np.repeat([0., 1., 0.], 100) # and use … Read more
The child process inherits signal handlers from the parent, but not the pending signal. After forking try installing the signal handler for SIGTRAP at a place in code where the child process executes after forking. If you don’t handle SIGTRAP, the default action is that the child is terminated. If you want to debug the … Read more
sending the signal 0 to a given PID just checks if any process with the given PID is running and you have the permission to send a signal to it. For more information see the following manpages: kill(1) $ man 1 kill … If sig is 0, then no signal is sent, but error checking … Read more
Two Linux-specific methods are SA_SIGINFO and signalfd(), which allows programs to receive very detailed information about signals sent, including the sender’s PID. Call sigaction() and pass to it a struct sigaction which has the desired signal handler in sa_sigaction and the SA_SIGINFO flag in sa_flags set. With this flag, your signal handler will receive three … Read more
From the man page for longjmp: POSIX does not specify whether longjmp() will restore the signal context. If you want to save and restore signal masks, use siglongjmp() Your second question: Yes, the function will return -2 because longjmp() will cause it to go to the setjmp(buffer) part, but the timing will have to be … Read more
OK – this is working for me on Windows & is portable – notice the #ifdef SIGBREAK – this isn’t a standard signal. #include <csignal> #include <iostream> #include <ostream> #include <string> using namespace std; namespace { volatile sig_atomic_t quit; void signal_handler(int sig) { signal(sig, signal_handler); quit = 1; } } int main() { signal(SIGINT, signal_handler); … Read more
I’m playing with this function and I’ve noticed you’re calling it in an interesting way. I’m calling it by adding CoreTelephony.framework as a compile-time link. For the function itself, you’ll want to declare it’s prototype somewhere (perhaps immediately above the method you call from): int CTGetSignalStrength(); This needs to be declared since it isn’t in … Read more
They are not copies. If you check the type of those, you’ll see that the class attribute is PySide.QtCore.Signal and the instance attribute is PySide.QtCore.SignalInstance. print “type(obj1.sig): {}”.format(type(obj1.sig)) print “type(obj2.sig): {}”.format(type(obj2.sig)) print “type(Klass.sig): {}”.format(type(Klass.sig)) # type(obj1.sig): <type ‘PySide.QtCore.SignalInstance’> # type(obj2.sig): <type ‘PySide.QtCore.SignalInstance’> # type(Klass.sig): <type ‘PySide.QtCore.Signal’> This is necessary because of the way Qt defines … Read more
Signal handling and diagnostic framework considerations: the OCI diagnostic framework installs signal handlers that may impact any signal handling that you use in your application. You can disable OCI signal handling by setting DIAG_SIGHANDLER_ENABLED=FALSE in the sqlnet.ora file. Refer to “Fault Diagnosability in OCI” in Oracle Call Interface Programmer’s Guide for information. Please try to … Read more