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