In Windows is there a way to trap signals on a Worker thread?

Rohan Pande 0
Viewed 57

In Windows on a Worker thread after registering signals if I call some MAV code the signals are not being trapped.

void RegisterSignals()
{
    typedef void (*SignalHandlerPointer)(int);

    SignalHandlerPointer previousHandler;
    previousHandler = signal(SIGSEGV, SignalHandler);
    ... // Registering other signals   
}

void BadFunc () 
{
  int *ptr = nullptr;
  *ptr = 45;
}

Since the application is a multi threaded environment and I have used MSDN Thread APIs I tried even registering signals for each thread but even that doesn't work out.

Is there any way so that the signals get trapped? Could anyone help me in this?

All comments and suggestions are appreciated

signals multithreading c++
1 Answers

signal(SIGSEGV, ...) doesn't work like that on Windows. On Windows, std::signal works in cooperation with std::raise. You can't raise a signal by using Undefined Behavior.

At the OS level, Windows uses Structured Exception Handling (SEH), which is unrelated to C++. The Microsoft Structured Exception that will happen here is an AccessViolation(0xC0000005).

MSalters0
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