Re: Deleting exceptions after throwing

From:
Pete Becker <pete@versatilecoding.com>
Newsgroups:
comp.lang.c++
Date:
Thu, 24 Sep 2009 10:56:38 -0400
Message-ID:
<2badnaaCU_Q7FSbXnZ2dnUVZ_tGdnZ2d@giganews.com>
Emil Berg wrote:

On Sep 24, 1:53 pm, Pete Becker <p...@versatilecoding.com> wrote:

Emil Berg wrote:

What I want to do is pass exceptions between threads.

C++0x has a mechanism for this. Inside a catch clause, you call
std::current_exception(), which gives you back an opaque pointer of type
std::exception_ptr to the current exception object. The exception object
stays around as long as there's an exception_ptr object pointing to it.
You can also rethrow the original exception, and the exception_ptr
object remains valid.

--
   Pete
Roundhouse Consulting, Ltd. (www.versatilecoding.com) Author of
"The Standard C++ Library Extensions: a Tutorial and Reference"
(www.petebecker.com/tr1book)


Now I've read about this concept.
It looks good, but I tried to use exception_ptr in a regular win32
application in visual studio 2008, and the compiler cannot find this
class.


Visual Studio 2008 doesn't implement C++0x. Very few compilers do, since
it hasn't been finished yet. <g>

--
   Pete
Roundhouse Consulting, Ltd. (www.versatilecoding.com) Author of
"The Standard C++ Library Extensions: a Tutorial and Reference"
(www.petebecker.com/tr1book)

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