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55c65cc2d5
New() methods should be invoked as constructors, not regular functions. Corner cases like Script::New() may cause a SIGSEGV when the GC is run. More details: http://groups.google.com/group/nodejs/browse_thread/thread/a7e5db68d4cd6356
126 lines
2.8 KiB
C++
126 lines
2.8 KiB
C++
// Copyright 2009 Ryan Dahl <ry@tinyclouds.org>
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#include <node_idle_watcher.h>
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#include <node.h>
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#include <v8.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> IdleWatcher::constructor_template;
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static Persistent<String> callback_symbol;
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void IdleWatcher::Initialize(Handle<Object> target) {
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HandleScope scope;
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Local<FunctionTemplate> t = FunctionTemplate::New(IdleWatcher::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("IdleWatcher"));
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "start", IdleWatcher::Start);
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "stop", IdleWatcher::Stop);
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "setPriority",
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IdleWatcher::SetPriority);
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target->Set(String::NewSymbol("IdleWatcher"), constructor_template->GetFunction());
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callback_symbol = NODE_PSYMBOL("callback");
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}
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Handle<Value> IdleWatcher::SetPriority(const Arguments& args) {
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IdleWatcher *idle = ObjectWrap::Unwrap<IdleWatcher>(args.Holder());
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HandleScope scope;
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int priority = args[0]->Int32Value();
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ev_set_priority(&idle->watcher_, priority);
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return Undefined();
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}
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void IdleWatcher::Callback(EV_P_ ev_idle *w, int revents) {
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IdleWatcher *idle = static_cast<IdleWatcher*>(w->data);
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assert(w == &idle->watcher_);
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assert(revents == EV_IDLE);
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HandleScope scope;
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Local<Value> callback_v = idle->handle_->Get(callback_symbol);
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if (!callback_v->IsFunction()) {
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idle->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(idle->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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//
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// var idle = new process.IdleWatcher();
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// idle.callback = function () { /* ... */ };
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// idle.start();
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//
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Handle<Value> IdleWatcher::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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IdleWatcher *s = new IdleWatcher();
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s->Wrap(args.This());
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return args.This();
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}
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Handle<Value> IdleWatcher::Start(const Arguments& args) {
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HandleScope scope;
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IdleWatcher *idle = ObjectWrap::Unwrap<IdleWatcher>(args.Holder());
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idle->Start();
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return Undefined();
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}
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void IdleWatcher::Start () {
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if (!watcher_.active) {
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ev_idle_start(EV_DEFAULT_UC_ &watcher_);
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Ref();
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}
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}
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Handle<Value> IdleWatcher::Stop(const Arguments& args) {
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HandleScope scope;
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IdleWatcher *idle = ObjectWrap::Unwrap<IdleWatcher>(args.Holder());
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idle->Stop();
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return Undefined();
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}
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void IdleWatcher::Stop () {
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if (watcher_.active) {
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ev_idle_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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