Re: [Boost-users] [Interprocess] shared_ptr in a non-throwing mode

2011/4/6 Ion Gaztañaga

El 06/04/2011 13:19, Pietro Versari escribió:

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Hi Ion (and everyone else),

I'm a newbye and I have only one simple question: how can I construct a shared_ptr in a non-throwing mode?

This example throw if there is enough space for MyType but isn't enough for my_shared_ptr:

typedef managed_shared_ptr::type my_shared_ptr; my_shared_ptr sh_ptr = make_managed_shared_ptr(     segment.construct<MyType>("object to share", std::nothrow)(), segment);

Then it's a bug ;-) Boost version please?

1.45.0, 1.46.0, 1.46.1 (gcc 4.4.3 and icc 12.0.2; OS: Ubuntu 10.04). But I have one question: these pieces of code are equivalent? typedef managed_shared_ptr::type my_shared_ptr; // piece 1 my_shared_ptr sh_ptr = make_managed_shared_ptr(    segment.construct<MyType>("object to share", std::nothrow)(), segment); // piece 2 MyType * instance = segment.construct<MyType>("object to share", std::nothrow)(); my_shared_ptr sh_ptr = make_managed_shared_ptr(    instance, segment); When I create an object of MyType in shared memory the Managed Memory Segments allocate portions of that segment in non-throwing mode, and when I create a shared_ptr the Managed Memory Segments allocate portions of that segment. How can the Managed Memory Segments understand that must allocate the portions of that segment for the shared_ptr in non-throwing mode? Thanks, Pietro Versari