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baed9d514d
This is sloppy: after each ObjectWrap allocation the user needs to call ObjectWrap::InformV8ofAllocation(). In addition each class deriving from ObjectWrap needs to implement the virtual method size() which should return the size of the derived class. If I was better at C++ I could possibly make this less ugly. For now this is how it is. Memory usage looks much better after this commit.
64 lines
2.1 KiB
C++
64 lines
2.1 KiB
C++
#ifndef node_h
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#define node_h
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#include <ev.h>
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#include <eio.h>
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#include <v8.h>
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namespace node {
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#define NODE_SYMBOL(name) v8::String::NewSymbol(name)
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#define NODE_METHOD(name) v8::Handle<v8::Value> name (const v8::Arguments& args)
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#define NODE_SET_METHOD(obj, name, callback) \
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obj->Set(NODE_SYMBOL(name), v8::FunctionTemplate::New(callback)->GetFunction())
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#define NODE_UNWRAP(type, value) static_cast<type*>(node::ObjectWrap::Unwrap(value))
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#define NODE_SET_PROTOTYPE_METHOD(templ, name, callback) \
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do { \
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Local<Signature> __callback##_SIG = Signature::New(templ); \
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Local<FunctionTemplate> __callback##_TEM = \
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FunctionTemplate::New(callback, Handle<Value>() , __callback##_SIG ); \
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templ->PrototypeTemplate()->Set(NODE_SYMBOL(name), __callback##_TEM); \
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} while(0)
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enum encoding {UTF8, RAW};
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void fatal_exception (v8::TryCatch &try_catch);
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void eio_warmup (void); // call this before creating a new eio event.
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class ObjectWrap {
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public:
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ObjectWrap (v8::Handle<v8::Object> handle);
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virtual ~ObjectWrap ( );
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virtual size_t size (void) = 0;
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/* This must be called after each new ObjectWrap creation! */
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static void InformV8ofAllocation (node::ObjectWrap *obj);
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protected:
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static void* Unwrap (v8::Handle<v8::Object> handle);
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v8::Persistent<v8::Object> handle_;
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/* Attach() marks the object as being attached to an event loop.
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* Attached objects will not be garbage collected, even if
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* all references are lost.
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*/
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void Attach();
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/* Detach() marks an object as detached from the event loop. This is its
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* default state. When an object with a "weak" reference changes from
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* attached to detached state it will be freed. Be careful not to access
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* the object after making this call as it might be gone!
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* (A "weak reference" is v8 terminology for an object who only has a
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* persistant handle.)
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*/
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void Detach();
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private:
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static void MakeWeak (v8::Persistent<v8::Value> _, void *data);
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int attach_count_;
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bool weak_;
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};
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} // namespace node
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#endif // node_h
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