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The C and C++ Include Header Files

/usr/include/nodejs/src/aliased_struct.h


$ cat -n /usr/include/nodejs/src/aliased_struct.h

     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	  v8::Local<v8::ArrayBuffer> GetArrayBuffer() const {
    37	    return buffer_.Get(isolate_);
    38	  }
    39	
    40	  const T* Data() const { return ptr_; }
    41	
    42	  T* Data() { return ptr_; }
    43	
    44	  const T& operator*() const { return *ptr_; }
    45	
    46	  T& operator*()  { return *ptr_; }
    47	
    48	  const T* operator->() const { return ptr_; }
    49	
    50	  T* operator->() { return ptr_; }
    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_