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node_signal_handler.cc
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74 lines (53 loc) · 1.99 KB
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// Copyright 2009 Ryan Dahl <ry@tinyclouds.org>
#include <node_signal_handler.h>
#include <assert.h>
namespace node {
using namespace v8;
Persistent<FunctionTemplate> SignalHandler::constructor_template;
void SignalHandler::Initialize(Handle<Object> target) {
HandleScope scope;
Local<FunctionTemplate> t = FunctionTemplate::New(SignalHandler::New);
constructor_template = Persistent<FunctionTemplate>::New(t);
constructor_template->Inherit(EventEmitter::constructor_template);
constructor_template->InstanceTemplate()->SetInternalFieldCount(1);
constructor_template->SetClassName(String::NewSymbol("SignalHandler"));
NODE_SET_PROTOTYPE_METHOD(constructor_template, "stop", SignalHandler::Stop);
target->Set(String::NewSymbol("SignalHandler"),
constructor_template->GetFunction());
}
void SignalHandler::OnSignal(EV_P_ ev_signal *watcher, int revents) {
SignalHandler *handler = static_cast<SignalHandler*>(watcher->data);
HandleScope scope;
assert(revents == EV_SIGNAL);
handler->Emit("signal", 0, NULL);
}
SignalHandler::~SignalHandler() {
if (watcher_.active) {
ev_ref(EV_DEFAULT_UC);
ev_signal_stop(EV_DEFAULT_UC_ &watcher_);
}
}
Handle<Value> SignalHandler::New(const Arguments& args) {
HandleScope scope;
if (args.Length() != 1 || !args[0]->IsInt32()) {
return ThrowException(String::New("Bad arguments"));
}
int sig = args[0]->Int32Value();
SignalHandler *handler = new SignalHandler();
handler->Wrap(args.Holder());
ev_signal_init(&handler->watcher_, SignalHandler::OnSignal, sig);
handler->watcher_.data = handler;
ev_signal_start(EV_DEFAULT_UC_ &handler->watcher_);
ev_unref(EV_DEFAULT_UC);
handler->Attach();
return args.This();
}
Handle<Value> SignalHandler::Stop(const Arguments& args) {
HandleScope scope;
SignalHandler *handler = ObjectWrap::Unwrap<SignalHandler>(args.Holder());
ev_ref(EV_DEFAULT_UC);
ev_signal_stop(EV_DEFAULT_UC_ &handler->watcher_);
handler->Detach();
return Undefined();
}
} // namespace node