1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
/*********************************************************************
* NAN - Native Abstractions for Node.js
*
* Copyright (c) 2018 NAN contributors
*
* MIT License <https://github.com/nodejs/nan/blob/master/LICENSE.md>
********************************************************************/
#include <nan.h>
using namespace Nan; // NOLINT(build/namespaces)
static AsyncResource* async_resource;
static Persistent<v8::Function> cb;
void weakCallback(
const WeakCallbackInfo<int> &data) { // NOLINT(runtime/references)
HandleScope scope;
int *parameter = static_cast<int*>(data.GetInternalField(0));
v8::Local<v8::Value> val = New(*parameter);
async_resource->runInAsyncScope(
GetCurrentContext()->Global(), New(cb), 1, &val);
delete async_resource;
delete parameter;
}
v8::Local<v8::String> wrap() {
EscapableHandleScope scope;
v8::Local<v8::String> lstring = New("result").ToLocalChecked();
v8::Local<v8::ObjectTemplate> otpl = New<v8::ObjectTemplate>();
otpl->SetInternalFieldCount(1);
v8::Local<v8::Object> obj = NewInstance(otpl).ToLocalChecked();
SetInternalFieldPointer(obj, 0, new int(42));
Persistent<v8::Object> persistent(obj);
persistent.SetWeak(
static_cast<int*>(0)
, weakCallback
, WeakCallbackType::kInternalFields);
assert(persistent.IsWeak());
return scope.Escape(lstring);
}
NAN_METHOD(Hustle) {
async_resource = new AsyncResource("nan:test:weak2");
cb.Reset(To<v8::Function>(info[0]).ToLocalChecked());
info.GetReturnValue().Set(wrap());
}
NAN_MODULE_INIT(Init) {
Set(target
, New<v8::String>("hustle").ToLocalChecked()
, GetFunction(New<v8::FunctionTemplate>(Hustle)).ToLocalChecked()
);
}
NODE_MODULE(weak2, Init)
|
