Over time I come across lots of useful resources but then quickly forget about them. What a shame. So I have decided to put it all together in this page. Hopefully this page will come in handy one day. Will populate this page from time to time.
| /** | |
| * Awesome website | |
| * @author YOUR_NAME_HERE | |
| * @version 0.1 | |
| */ | |
| /* ============================ RESET ============================ */ | |
| /* ===== Eric Meyer Reset ===== */ |
All standard C++ library conforming allocators have to support the minimal interface requirements.
Beyond these requirements, some examples of fully defined allocators are
LLVM's latest standard C++ library implementation of std::allocator, and
a custom allocator I've written called ThreadLocalAllocator.
These are both examples of what's been categorized as "stateless" allocators.
Alternatively, allocators can be "stateful".
All standard C++ library conforming allocators have to support the minimal interface requirements.
Beyond these requirements, some examples of fully defined allocators are
LLVM's latest standard C++ library implementation of std::allocator, and
a custom allocator I've written called ThreadLocalAllocator.
These are both examples of what's been categorized as "stateless" allocators.
Alternatively, allocators can be "stateful".
From item 11 of section 16.5.3.5 Cpp17Allocator requirements of n4861.pdf:
"The following is an allocator class template supporting the minimal interface...":
template<class Tp>
struct SimpleAllocator {
typedef Tp value_type;
Seems like this has come up for me enough in discussing C++ with others, that it might help to put together the information in this gist.
Standard C++ has since C++11 required that block-scope variables with static or thread storage duration get initialized in a thread safe way. Besides there being a StackOverflow answer - to a related question - showing some example assembly for C++11 that includes thread safe guards, there's also the C++ standard documents themselves.
What follows is the specific requirement by versions of the standard.