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154 lines (122 loc) · 3.73 KB
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// Copyright (c) 2012 Toby Ealden.
// Copyright (c) 2014 Martin Man.
// vim: ts=2 sw=2 et
#include "socket_watcher.hpp"
#include <string.h>
using namespace v8;
Persistent<String> callback_symbol;
Persistent<Function> constructor;
// mman, why is this here?
// Handle<Value> Calleback(const Arguments& args) {
// return Undefined();
// };
SocketWatcher::SocketWatcher() : poll_(NULL), fd_(0), events_(0)
{
}
void SocketWatcher::Initialize(Handle<Object> exports)
{
NanScope();
Local<FunctionTemplate> t = NanNew<FunctionTemplate>(New);
t->SetClassName(NanNew("SocketWatcher"));
t->InstanceTemplate()->SetInternalFieldCount(1);
NODE_SET_PROTOTYPE_METHOD(t, "set", SocketWatcher::Set);
NODE_SET_PROTOTYPE_METHOD(t, "start", SocketWatcher::Start);
NODE_SET_PROTOTYPE_METHOD(t, "stop", SocketWatcher::Stop);
exports->Set(NanNew("SocketWatcher"), t->GetFunction());
NanAssignPersistent(constructor, t->GetFunction());
NanAssignPersistent(callback_symbol, NanNew("callback"));
}
NAN_METHOD(SocketWatcher::Start)
{
NanScope();
SocketWatcher *watcher = ObjectWrap::Unwrap<SocketWatcher>(args.This());
watcher->StartInternal();
NanReturnUndefined();
}
void SocketWatcher::StartInternal()
{
if (poll_ == NULL) {
poll_ = new uv_poll_t;
memset(poll_,0,sizeof(uv_poll_t));
poll_->data = this;
uv_poll_init_socket(uv_default_loop(), poll_, fd_);
Ref();
}
if (!uv_is_active((uv_handle_t*)poll_)) {
uv_poll_start(poll_, events_, &SocketWatcher::Callback);
}
}
void SocketWatcher::Callback(uv_poll_t *w, int status, int revents)
{
NanScope();
SocketWatcher *watcher = static_cast<SocketWatcher*>(w->data);
assert(w == watcher->poll_);
Local<String> symbol = NanNew(callback_symbol);
Local<Value> callback_v = NanObjectWrapHandle(watcher)->Get(symbol);
if(!callback_v->IsFunction()) {
watcher->StopInternal();
return;
}
Local<Function> callback = Local<Function>::Cast(callback_v);
const unsigned argc = 2;
Local<Value> argv[argc]= { NanNew(revents & UV_READABLE ? NanTrue() : NanFalse()),
NanNew(revents & UV_WRITABLE ? NanTrue() : NanFalse()) };
NanMakeCallback(NanObjectWrapHandle(watcher), callback, argc, argv);
}
NAN_METHOD(SocketWatcher::Stop)
{
NanScope();
SocketWatcher *watcher = ObjectWrap::Unwrap<SocketWatcher>(args.This());
watcher->StopInternal();
NanReturnUndefined();
}
void SocketWatcher::StopInternal() {
if (poll_ != NULL) {
uv_poll_stop(poll_);
Unref();
}
}
NAN_METHOD(SocketWatcher::New)
{
NanScope();
if (args.IsConstructCall()) {
// Invoked as constructor: `new MyObject(...)`
SocketWatcher *s = new SocketWatcher();
s->Wrap(args.This());
NanReturnValue(args.This());
} else {
// Invoked as plain function `MyObject(...)`, turn into construct call.
Local<Function> cons = NanNew<Function>(constructor);
NanReturnValue(cons->NewInstance());
}
}
NAN_METHOD(SocketWatcher::Set)
{
NanScope();
SocketWatcher *watcher = ObjectWrap::Unwrap<SocketWatcher>(args.This());
if(!args[0]->IsInt32()) {
NanThrowTypeError("First arg should be a file descriptor.");
NanReturnUndefined();
}
int fd = args[0]->Int32Value();
int events = 0;
if(!args[1]->IsBoolean()) {
NanThrowTypeError("Second arg should boolean (readable).");
NanReturnUndefined();
}
if(args[1]->IsTrue()) events |= UV_READABLE;
if(!args[2]->IsBoolean()) {
NanThrowTypeError("Third arg should boolean (writable).");
NanReturnUndefined();
}
if (args[2]->IsTrue()) events |= UV_WRITABLE;
assert(watcher->poll_ == NULL);
watcher->fd_ = fd;
watcher->events_ = events;
NanReturnUndefined();
}
void Init(Handle<Object> exports)
{
SocketWatcher::Initialize(exports);
}
NODE_MODULE(socketwatcher, Init)