allocator_开发者

Is there a bitset class that's sized at instantiation time, but avoids boost::dynamic_bitset<>'s extra allocation call?

Is there a convenient analog of std::bitset<> that\'s dynamically sizable at instantiation time, but avoids the extra allocation required by boost::dynamic_bitset<>[详细]

2023-04-13 01:43 分类：问答

Is there an STL Allocator that will not implicitly free memory?

Memory usage in my STL containers is projected to be volatile - that is to say it will frequently shrink and grow.I\'m thinking to account for this by specifying an allocator to the STL container type[详细]

2023-04-11 00:33 分类：问答

Custom allocator fails to rebind to Other type

All I have code for my custom allocator that is written with intent to be a proxy for other allocators to be able for example to gather allocation statistics or whatever else[详细]

2023-04-09 06:45 分类：问答

boost::unordered_map using boost::interprocess::cached_node_allocator compilation failure

I am trying to create a boost::unordered_map in a boost::interprocess::managed_shared_memory segment. This works fine until I try to change from using boost::interprocess::allocator to boost::interpro[详细]

2023-04-05 11:31 分类：问答

Creating a shared_ptr from an allocator using typedefs?

I have some code that I am retrofitting to use an alloc开发者_如何学运维ator instead of operator new and operator delete directly.One part of this code\'s public interface is to return not a bald poin[详细]

2023-04-05 10:08 分类：问答

C++0x allocators

I observed that my copy of MSVC10 came with containers that appeared to allow state based allocators, and wrote a simple pool allocator, that allocates pools for a specific type.[详细]

2023-04-01 01:46 分类：问答

why does allocator in c++ need a copy constructor?

It is said here that it\'s because of开发者_如何学JAVA exception specification. I do not understand it. Does this question have any relationship with exception specification?After reading through the[详细]

2023-03-30 03:02 分类：问答

Why does allocator in c++ provide specialization for type void

I notice that t开发者_如何学JAVAhe allocator in c++ provides specialization for type void. Is there any special purpose to do this? It doesn\'t make sense to allocate memory for void type, right?This[详细]

2023-03-29 13:41 分类：问答

Custom Allocator in tr1's unordered_map

I have a few problems regarding a custom allocator for an unordered_map. I have a large dataset and I need to hash on a string as key. So I came to know that providing a custom memory allocator would[详细]

2023-03-12 22:36 分类：问答

C++ Design Pattern for allocator type arguments

The C++03 standard library uses simple template type arguments when passing a type to a class which is meant to be an allocator. This is possible because of how templates work in C++. However, it isn\[详细]

2023-03-12 09:06 分类：问答