Re: [Boost-users] slow exception handling

On Wed, Dec 11, 2013 at 7:14 PM, XIN LI wrote:

The exceptions happens thousands of times within those 5 minutes. I just wondering why boost exception code can impact normal c++ exception performance?

I'm not sure Boost exceptions, or C++ exceptions in general, are necessarily well understood by this question. That's where I would begin. Read up on C++ exceptions; you can throw an int, or a char, for instance, if you wanted to. However, most of the time, you are throwing an instance of a class, which can have all sorts of logic to tell about itself when it is caught, which all takes time to process.

On Wed, Dec 11, 2013 at 5:09 PM, Emil Dotchevski wrote:

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On Wed, Dec 11, 2013 at 4:58 PM, XIN LI wrote:

...

In my code, I add some protection to catch the exception from boost like "catch (boost::archive::archive_exception& ex)", strangely, it slow exception handling, causing one of our tests to go from around 30 seconds to greater than 5 minutes.

How many exceptions do you throw and catch within those 5 minutes? Throwing exceptions isn't exactly fast.

-- Emil Dotchevski Reverge Studios, Inc. http://www.revergestudios.com/reblog/index.php?n=ReCode _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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