Newsgroups: comp.lang.c++
Path: utzoo!utgpu!watserv1!watdragon!fkho
From: fkho@watdragon.waterloo.edu (Frederick K. Ho)
Subject: Question about C++ signal handling
Message-ID: <1991Apr22.194302.17795@watdragon.waterloo.edu>
Summary:  C++ signal callback
Organization: University of Waterloo
Date: Mon, 22 Apr 1991 19:43:02 GMT
Lines: 43


Hi, I would like to know if anyone tried to register a signal inside a
member function with the callback signal handler being another member
function of the same class?

I have experiencing trouble inside the wakeup routine where I got BUS
error (alignment error). The this pointer seems to be corrupted.
Here's what I did:

class A
{
private:
	int	to;
public:
	A();
	~A();
	f();
	timeout();
};

A::timeout()
{
	to = 1;
}

A::f()
{
	// register the signal
	::signal(SIGALRM, timeout);

	 ...
}


Has I done anything wrong?

	//fred
	U. of Waterloo

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