Of course it is possible. But you'll need a C++ native module to do that. And keep in mind that every OS has their own way of querying system resource usage.
For example, if you're on Windows (which might be what you're looking for since usage doesn't support Windows), you could do something like
performance.cpp
#include
#include "performance_algorithm.hpp"
using namespace v8;
void InitAll(Handle exports) {
PerformanceAlgorithm::Initialize();
PerformanceAlgorithm::RegisterMethod(exports);
}
NODE_MODULE(Performance, InitAll)
performance_algorithm.cpp
#include
#include "baton.hpp"
#include "structs.hpp"
#include "performance_algorithm.hpp"
void PerformanceAlgorithm::Initialize() {
PdhOpenQuery(NULL, NULL, &cpuQuery);
PdhAddCounter(cpuQuery, "\\Processor(_Total)\\% Processor Time", NULL, &cpuTotal);
PdhCollectQueryData(cpuQuery);
}
void PerformanceAlgorithm::RegisterMethod(Handle exports) {
NODE_SET_METHOD(exports, "getPerformanceData", PerformanceAlgorithm::GetPerformanceDataAsync);
}
void PerformanceAlgorithm::GetPerformanceDataAsync(const FunctionCallbackInfo& args) {
Isolate* isolate = Isolate::GetCurrent();
HandleScope scope(isolate);
if (args.Length() != 1) {
isolate->ThrowException(Exception::TypeError(String::NewFromUtf8(isolate, "Wrong number of arguments")));
} else {
if (!args[0]->IsFunction()) {
isolate->ThrowException(Exception::TypeError(String::NewFromUtf8(isolate, "Wrong arguments type")));
} else {
Local callbackFunction = Local::Cast(args[0]);
Baton* baton = new Baton();
baton->request.data = baton;
baton->callbackFunction.Reset(isolate, callbackFunction);
uv_queue_work(uv_default_loop(), &baton->request, PerformanceAlgorithm::GetPerformanceDataWork, PerformanceAlgorithm::GetPerformanceDataAsyncAfter);
}
}
}
void PerformanceAlgorithm::GetPerformanceDataWork(uv_work_t* request) {
Baton* baton = static_cast*>(request->data);
baton->result.memory_info.dwLength = sizeof(MEMORYSTATUSEX);
GlobalMemoryStatusEx(&baton->result.memory_info);
PDH_FMT_COUNTERVALUE counterVal;
PdhCollectQueryData(cpuQuery);
PdhGetFormattedCounterValue(cpuTotal, PDH_FMT_DOUBLE, NULL, &counterVal);
baton->result.cpu_usage = counterVal.doubleValue;
DWORD processIDs[1024], bytesReturned;
EnumProcesses(processIDs, sizeof(processIDs), &bytesReturned);
DWORD numberOfProcesses = bytesReturned / sizeof(DWORD);
for (int i = 0; i < numberOfProcesses; i++) {
HANDLE hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, processIDs[i]);
HMODULE hMods[1024];
DWORD cbNeeded;
if (EnumProcessModules(hProcess, hMods, sizeof(hMods), &cbNeeded)) {
for (int j = 0; j < (cbNeeded / sizeof(HMODULE)); j++) {
TCHAR szModName[MAX_PATH];
GetModuleFileNameEx(hProcess, hMods[j], szModName, sizeof(szModName) / sizeof(TCHAR));
ProcessInfo info;
info.process_id = processIDs[i];
info.path = string(szModName);
baton->result.processes.push_back(info);
break;
}
}
CloseHandle(hProcess);
}
sort(baton->result.processes.begin(), baton->result.processes.end(), [](ProcessInfo a, ProcessInfo b) -> bool {
return a.process_id < b.process_id;
});
GetPerformanceInfo(&baton->result.performance_info, sizeof(PERFORMACE_INFORMATION));
}
void PerformanceAlgorithm::GetPerformanceDataAsyncAfter(uv_work_t* request, int status) {
Isolate* isolate = Isolate::GetCurrent();
HandleScope scope(isolate);
EscapableHandleScope escapableHandleScope(isolate);
Baton* baton = static_cast*>(request->data);
Local callbackFunction = Local::New(isolate, baton->callbackFunction);
Local returnValue = Object::New(isolate);
returnValue->Set(String::NewFromUtf8(isolate, "cpu_usage"), Number::New(isolate, baton->result.cpu_usage));
returnValue->Set(String::NewFromUtf8(isolate, "ram_usage"), Number::New(isolate, baton->result.memory_info.dwMemoryLoad));
returnValue->Set(String::NewFromUtf8(isolate, "total_physical_memory"), Number::New(isolate, baton->result.memory_info.ullTotalPhys));
returnValue->Set(String::NewFromUtf8(isolate, "available_physical_memory"), Number::New(isolate, baton->result.memory_info.ullAvailPhys));
returnValue->Set(String::NewFromUtf8(isolate, "total_page_file"), Number::New(isolate, baton->result.memory_info.ullTotalPageFile));
returnValue->Set(String::NewFromUtf8(isolate, "available_page_file"), Number::New(isolate, baton->result.memory_info.ullAvailPageFile));
returnValue->Set(String::NewFromUtf8(isolate, "total_virtual"), Number::New(isolate, baton->result.memory_info.ullTotalVirtual));
returnValue->Set(String::NewFromUtf8(isolate, "available_virtual"), Number::New(isolate, baton->result.memory_info.ullAvailVirtual));
Local processes = Array::New(isolate, baton->result.processes.size());
for (int i = 0; i < baton->result.processes.size(); i++) {
Local processInfo = Object::New(isolate);
processInfo->Set(String::NewFromUtf8(isolate, "process_id"), Number::New(isolate, baton->result.processes[i].process_id));
processInfo->Set(String::NewFromUtf8(isolate, "path"), String::NewFromUtf8(isolate, baton->result.processes[i].path.c_str()));
processes->Set(i, processInfo);
}
returnValue->Set(String::NewFromUtf8(isolate, "running_processes"), processes);
const unsigned int argc = 1;
Handle argv[argc] = { escapableHandleScope.Escape(returnValue) };
callbackFunction->Call(isolate->GetCurrentContext()->Global(), argc, argv);
baton->callbackFunction.Reset();
delete baton;
}
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