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105 lines
2.6 KiB
105 lines
2.6 KiB
// Copyright 2009 Ryan Dahl <ry@tinyclouds.org>
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#include <node_signal_watcher.h>
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#include <assert.h>
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namespace node {
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using namespace v8;
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Persistent<FunctionTemplate> SignalWatcher::constructor_template;
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static Persistent<String> callback_symbol;
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void SignalWatcher::Initialize(Handle<Object> target) {
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HandleScope scope;
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Local<FunctionTemplate> t = FunctionTemplate::New(SignalWatcher::New);
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constructor_template = Persistent<FunctionTemplate>::New(t);
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constructor_template->InstanceTemplate()->SetInternalFieldCount(1);
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constructor_template->SetClassName(String::NewSymbol("SignalWatcher"));
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "start", SignalWatcher::Start);
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "stop", SignalWatcher::Stop);
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target->Set(String::NewSymbol("SignalWatcher"),
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constructor_template->GetFunction());
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callback_symbol = NODE_PSYMBOL("callback");
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}
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void SignalWatcher::Callback(EV_P_ ev_signal *watcher, int revents) {
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SignalWatcher *w = static_cast<SignalWatcher*>(watcher->data);
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assert(watcher == &w->watcher_);
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assert(revents == EV_SIGNAL);
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HandleScope scope;
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Local<Value> callback_v = w->handle_->Get(callback_symbol);
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if (!callback_v->IsFunction()) {
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w->Stop();
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return;
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}
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Local<Function> callback = Local<Function>::Cast(callback_v);
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TryCatch try_catch;
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callback->Call(w->handle_, 0, NULL);
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if (try_catch.HasCaught()) {
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FatalException(try_catch);
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}
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}
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Handle<Value> SignalWatcher::New(const Arguments& args) {
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if (!args.IsConstructCall()) {
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return FromConstructorTemplate(constructor_template, args);
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}
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HandleScope scope;
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if (args.Length() != 1 || !args[0]->IsInt32()) {
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return ThrowException(String::New("Bad arguments"));
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}
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int sig = args[0]->Int32Value();
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SignalWatcher *w = new SignalWatcher(sig);
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w->Wrap(args.Holder());
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return args.This();
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}
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Handle<Value> SignalWatcher::Start(const Arguments& args) {
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HandleScope scope;
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SignalWatcher *w = ObjectWrap::Unwrap<SignalWatcher>(args.Holder());
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w->Start();
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return Undefined();
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}
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void SignalWatcher::Start () {
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if (!watcher_.active) {
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ev_signal_start(EV_DEFAULT_UC_ &watcher_);
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ev_unref(EV_DEFAULT_UC);
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Ref();
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}
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}
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Handle<Value> SignalWatcher::Stop(const Arguments& args) {
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HandleScope scope;
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SignalWatcher *w = ObjectWrap::Unwrap<SignalWatcher>(args.Holder());
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w->Stop();
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return Undefined();
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}
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void SignalWatcher::Stop () {
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if (watcher_.active) {
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ev_ref(EV_DEFAULT_UC);
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ev_signal_stop(EV_DEFAULT_UC_ &watcher_);
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Unref();
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}
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}
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} // namespace node
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NODE_MODULE(node_signal_watcher, node::SignalWatcher::Initialize);
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