38dc0cd8f4
This commit also breaks up req_wrap.h into req-wrap.h and req-wrap-inl.h to work around a circular dependency issue in env.h. PR-URL: https://github.com/iojs/io.js/pull/667 Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com> Reviewed-By: Trevor Norris <trev.norris@gmail.com>
71 lines
2 KiB
C++
71 lines
2 KiB
C++
#ifndef SRC_HANDLE_WRAP_H_
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#define SRC_HANDLE_WRAP_H_
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#include "async-wrap.h"
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#include "util.h"
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#include "uv.h"
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#include "v8.h"
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namespace node {
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class Environment;
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// Rules:
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//
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// - Do not throw from handle methods. Set errno.
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//
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// - MakeCallback may only be made directly off the event loop.
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// That is there can be no JavaScript stack frames underneath it.
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// (Is there any way to assert that?)
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//
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// - No use of v8::WeakReferenceCallback. The close callback signifies that
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// we're done with a handle - external resources can be freed.
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//
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// - Reusable?
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//
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// - The uv_close_cb is used to free the c++ object. The close callback
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// is not made into javascript land.
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//
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// - uv_ref, uv_unref counts are managed at this layer to avoid needless
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// js/c++ boundary crossing. At the javascript layer that should all be
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// taken care of.
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class HandleWrap : public AsyncWrap {
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public:
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static void Close(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void Ref(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void Unref(const v8::FunctionCallbackInfo<v8::Value>& args);
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static inline bool IsAlive(const HandleWrap* wrap) {
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return wrap != nullptr && wrap->GetHandle() != nullptr;
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}
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inline uv_handle_t* GetHandle() const { return handle__; }
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protected:
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HandleWrap(Environment* env,
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v8::Handle<v8::Object> object,
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uv_handle_t* handle,
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AsyncWrap::ProviderType provider,
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AsyncWrap* parent = nullptr);
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virtual ~HandleWrap() override;
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private:
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friend class Environment;
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friend void GetActiveHandles(const v8::FunctionCallbackInfo<v8::Value>&);
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static void OnClose(uv_handle_t* handle);
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ListNode<HandleWrap> handle_wrap_queue_;
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unsigned int flags_;
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// Using double underscore due to handle_ member in tcp_wrap. Probably
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// tcp_wrap should rename it's member to 'handle'.
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uv_handle_t* handle__;
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static const unsigned int kUnref = 1;
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static const unsigned int kCloseCallback = 2;
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};
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} // namespace node
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#endif // SRC_HANDLE_WRAP_H_
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