/src/node/src/aliased_struct.h
Line | Count | Source |
1 | | #ifndef SRC_ALIASED_STRUCT_H_ |
2 | | #define SRC_ALIASED_STRUCT_H_ |
3 | | |
4 | | #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS |
5 | | |
6 | | #include "node_internals.h" |
7 | | #include "v8.h" |
8 | | #include <memory> |
9 | | |
10 | | namespace node { |
11 | | |
12 | | // AliasedStruct is a utility that allows uses a V8 Backing Store |
13 | | // to be exposed to the C++/C side as a struct and to the |
14 | | // JavaScript side as an ArrayBuffer to efficiently share |
15 | | // data without marshalling. It is similar in nature to |
16 | | // AliasedBuffer. |
17 | | // |
18 | | // struct Foo { int x; } |
19 | | // |
20 | | // AliasedStruct<Foo> foo; |
21 | | // foo->x = 1; |
22 | | // |
23 | | // Local<ArrayBuffer> ab = foo.GetArrayBuffer(); |
24 | | template <typename T> |
25 | | class AliasedStruct final { |
26 | | public: |
27 | | template <typename... Args> |
28 | | explicit AliasedStruct(v8::Isolate* isolate, Args&&... args); |
29 | | |
30 | | inline AliasedStruct(const AliasedStruct& that); |
31 | | |
32 | | inline ~AliasedStruct(); |
33 | | |
34 | | inline AliasedStruct& operator=(AliasedStruct&& that) noexcept; |
35 | | |
36 | 0 | v8::Local<v8::ArrayBuffer> GetArrayBuffer() const { |
37 | 0 | return buffer_.Get(isolate_); |
38 | 0 | } Unexecuted instantiation: node::AliasedStruct<node::http2::SessionJSFields>::GetArrayBuffer() const Unexecuted instantiation: node::AliasedStruct<node::quic::Endpoint::State>::GetArrayBuffer() const Unexecuted instantiation: node::AliasedStruct<node::quic::Endpoint::Stats>::GetArrayBuffer() const Unexecuted instantiation: node::AliasedStruct<node::quic::Session::Stats>::GetArrayBuffer() const Unexecuted instantiation: node::AliasedStruct<node::quic::Session::State>::GetArrayBuffer() const Unexecuted instantiation: node::AliasedStruct<node::quic::Stream::State>::GetArrayBuffer() const Unexecuted instantiation: node::AliasedStruct<node::quic::Stream::Stats>::GetArrayBuffer() const |
39 | | |
40 | | const T* Data() const { return ptr_; } |
41 | | |
42 | 0 | T* Data() { return ptr_; }Unexecuted instantiation: node::AliasedStruct<node::quic::Endpoint::Stats>::Data() Unexecuted instantiation: node::AliasedStruct<node::quic::Session::Stats>::Data() Unexecuted instantiation: node::AliasedStruct<node::quic::Stream::Stats>::Data() |
43 | | |
44 | | const T& operator*() const { return *ptr_; } |
45 | | |
46 | | T& operator*() { return *ptr_; } |
47 | | |
48 | 0 | const T* operator->() const { return ptr_; }Unexecuted instantiation: node::AliasedStruct<node::quic::Endpoint::State>::operator->() const Unexecuted instantiation: node::AliasedStruct<node::quic::Session::State>::operator->() const Unexecuted instantiation: node::AliasedStruct<node::quic::Stream::State>::operator->() const |
49 | | |
50 | 0 | T* operator->() { return ptr_; }Unexecuted instantiation: node::AliasedStruct<node::http2::SessionJSFields>::operator->() Unexecuted instantiation: node::AliasedStruct<node::quic::Endpoint::State>::operator->() Unexecuted instantiation: node::AliasedStruct<node::quic::Session::State>::operator->() Unexecuted instantiation: node::AliasedStruct<node::quic::Stream::State>::operator->() Unexecuted instantiation: node::AliasedStruct<node::quic::Stream::Stats>::operator->() |
51 | | |
52 | | private: |
53 | | v8::Isolate* isolate_; |
54 | | std::shared_ptr<v8::BackingStore> store_; |
55 | | T* ptr_; |
56 | | v8::Global<v8::ArrayBuffer> buffer_; |
57 | | }; |
58 | | |
59 | | } // namespace node |
60 | | |
61 | | #endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS |
62 | | |
63 | | #endif // SRC_ALIASED_STRUCT_H_ |