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James M Snell
1d69c6f474
Extracted from the [QUIC PR](https://github.com/nodejs/node/pull/32379) So far, this is only used by the QUIC PR directly but the change itself is independent of QUIC, even if not used directly by anything else yet. Separated out per request. Signed-off-by: James M Snell <jasnell@gmail.com> PR-URL: https://github.com/nodejs/node/pull/33104 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
#ifndef SRC_NODE_MEM_H_
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#define SRC_NODE_MEM_H_
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#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
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#include <cstddef>
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namespace node {
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namespace mem {
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// Both ngtcp2 and nghttp2 allow custom allocators that
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// follow exactly the same structure and behavior, but
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// use different struct names. To allow for code re-use,
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// the NgLibMemoryManager template class can be used for both.
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struct NgLibMemoryManagerBase {
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virtual void StopTrackingMemory(void* ptr) = 0;
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};
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template <typename Class, typename AllocatorStructName>
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class NgLibMemoryManager : public NgLibMemoryManagerBase {
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public:
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// Class needs to provide these methods:
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// void CheckAllocatedSize(size_t previous_size) const;
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// void IncreaseAllocatedSize(size_t size);
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// void DecreaseAllocatedSize(size_t size);
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// Environment* env() const;
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AllocatorStructName MakeAllocator();
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void StopTrackingMemory(void* ptr) override;
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private:
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static void* ReallocImpl(void* ptr, size_t size, void* user_data);
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static void* MallocImpl(size_t size, void* user_data);
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static void FreeImpl(void* ptr, void* user_data);
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static void* CallocImpl(size_t nmemb, size_t size, void* user_data);
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};
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} // namespace mem
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} // namespace node
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#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
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#endif // SRC_NODE_MEM_H_
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