1 files changed, 40 insertions, 0 deletions
diff --git a/src/req_wrap.h b/src/req_wrap.h
new file mode 100644
index 0000000000..83baf9d2a3
--- /dev/null
+++ b/src/req_wrap.h
@@ -0,0 +1,40 @@
+#ifndef SRC_REQ_WRAP_H_
+#define SRC_REQ_WRAP_H_
+
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
+#include "async_wrap.h"
+#include "env.h"
+#include "util.h"
+#include "v8.h"
+
+namespace node {
+
+template <typename T>
+class ReqWrap : public AsyncWrap {
+ public:
+  inline ReqWrap(Environment* env,
+                 v8::Local<v8::Object> object,
+                 AsyncWrap::ProviderType provider);
+  inline ~ReqWrap() override;
+  inline void Dispatched();  // Call this after the req has been dispatched.
+  T* req() { return &req_; }
+
+ private:
+  friend class Environment;
+  ListNode<ReqWrap> req_wrap_queue_;
+
+ protected:
+  // req_wrap_queue_ needs to be at a fixed offset from the start of the class
+  // because it is used by ContainerOf to calculate the address of the embedding
+  // ReqWrap. ContainerOf compiles down to simple, fixed pointer arithmetic.
+  // sizeof(req_) depends on the type of T, so req_wrap_queue_ would
+  // no longer be at a fixed offset if it came after req_.
+  T req_;
+};
+
+}  // namespace node
+
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
+#endif  // SRC_REQ_WRAP_H_