Re: SIGALRM in a class member?

James Kanze <>
Thu, 14 Aug 2008 01:05:23 -0700 (PDT)
On Aug 14, 12:38 am, Ron Eggler <> wrote:

I also replaced my atoi(string from XML parser) to this:

istringstream buffer(INITSource::XMLread(inBufstr,"Cyclic"));
buffer >> HeartBeatTime;

What do you think to this, is this better?

If it is in a signal handler, it's undefined behavior.

This should work properly as well and is C++ conform, any
other suggestions or hints regarding this conversion?

You can't do anything this complicated in a signal handler
without incurring undefined behavior.

Note that C++ is even trickier with regards to signal handlers,
since Posix makes no guarantees concerning C++. In general, you
can count on being able to do anything you could do from a
signal handler in C, but nothing more. You cannot do *anything*
which uses any of the iostream stuff, or FILE*. You cannot call
any of the functions defined in the C++ standard. Of the
functions defined in the C standard, I think time(), rename(),
signal() and abort() are the only ones allowed (unless I've
missed one).

James Kanze (GABI Software)
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