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Bookmark or Share- What's the advantage of using std::allocator instead of new in C++?Allocators are much more though, because they offer complete control over the aforementioned phases. With allocator we must explicitly allocate heap memory, construct it, destroy it, and then finally deallocate the memory. Indeed allocators are not supposed to be used for "normal" code where new and delete would equally be fine
- Compelling examples of custom C++ allocators? [closed]It has a notable overhead in terms of performance and, sometimes, extra memory used for mapping too. So, in most cases custom allocators are implemented in a way to maximize the performance and/or minimize the amount of extra memory needed for allocating small (≤1024 bytes) objects.
- What are the differences between Block, Stack and Scratch Allocators?Stack allocators make optimally efficient use of memory and have fully predictable runtime behavior. They obviously work well only for problems where the required order of deallocations is easy to achieve. It is usually not trivial to enforce the correct deallocation order statically, so debugging them can be a pain if they are being used ...
- C++: Memory allocators - Stack OverflowProgrammers hoping to achieve performance improvements often use custom memory allocators. This in-depth study examines eight applications that use custom allocators. Surprisingly, for six of these applications, a state-of-the-art general-purpose allocator (the Lea allocator) performs as well as or better than the custom allocators.
- How can I write a stateful allocator in C++11, given requirements on ...Equality of allocators does not imply that they must have exactly the same internal state, only that they must both be able to deallocate memory that was allocated with either allocator. Cross-type equality of allocators a == b for an allocator a of type X and allocator b of type Y is defined in table 28 as "same as a == Y::template rebind
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