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asyncprogressworkerstream.cpp
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87 lines (74 loc) · 2.32 KB
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/*********************************************************************
* 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>
#include "sleep.h" // NOLINT(build/include_subdir)
using namespace Nan; // NOLINT(build/namespaces)
// Custom data type: This serves as an example of how external
// libraries could be hooked in, populate their objects and send them to JS.
struct data_t {
int index;
int data;
};
// Unlike test/cpp/ayncprogressworker.cpp this test is explicitly templated.
template<typename T>
class ProgressWorker : public AsyncProgressWorkerBase<T> {
public:
ProgressWorker(
Callback *callback
, Callback *progress
, int milliseconds
, int iters)
: AsyncProgressWorkerBase<T>(callback), progress(progress)
, milliseconds(milliseconds), iters(iters) {}
~ProgressWorker() {
delete progress;
}
void Execute (
const typename AsyncProgressWorkerBase<T>::ExecutionProgress& progress) {
data_t data;
for (int i = 0; i < iters; ++i) {
data.index = i;
data.data = i * 2;
progress.Send(&data, 1);
Sleep(milliseconds);
}
}
void HandleProgressCallback(const T *data, size_t count) {
HandleScope scope;
v8::Local<v8::Object> obj = Nan::New<v8::Object>();
Nan::Set(
obj,
Nan::New("index").ToLocalChecked(),
New<v8::Integer>(data->index));
Nan::Set(
obj,
Nan::New("data").ToLocalChecked(),
New<v8::Integer>(data->data));
v8::Local<v8::Value> argv[] = { obj };
progress->Call(1, argv, this->async_resource);
}
private:
Callback *progress;
int milliseconds;
int iters;
};
NAN_METHOD(DoProgress) {
Callback *progress = new Callback(To<v8::Function>(info[2]).ToLocalChecked());
Callback *callback = new Callback(To<v8::Function>(info[3]).ToLocalChecked());
AsyncQueueWorker(new ProgressWorker<data_t>(
callback
, progress
, To<uint32_t>(info[0]).FromJust()
, To<uint32_t>(info[1]).FromJust()));
}
NAN_MODULE_INIT(Init) {
Set(target
, New<v8::String>("a").ToLocalChecked()
, GetFunction(New<v8::FunctionTemplate>(DoProgress)).ToLocalChecked());
}
NODE_MODULE(asyncprogressworkerstream, Init)