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Anna HenningsenandJames M Snell
1e5911d5a3
This implements a memory-tracking allocator that can be used to provide memory allocation facilities to several thread-safe C libraries, including nghttp2, nghttp3, ngtcp3 and uvwasi. Refs: https://github.com/nodejs/quic/blob/34ee0bc96f804c73cb22b2945a1a78f780938492/src/node_mem.h Co-authored-by: James M Snell <jasnell@gmail.com> PR-URL: https://github.com/nodejs/node/pull/30745 Refs: https://github.com/nodejs/quic/pull/126 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
42 lines
1.2 KiB
C++
42 lines
1.2 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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template <typename Class, typename AllocatorStructName>
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class NgLibMemoryManager {
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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);
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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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