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// Copyright 2009 Ryan Dahl <ry@tinyclouds.org>
#include <node_stat_watcher.h>
#include <assert.h>
#include <string.h>
#include <stdlib.h>
namespace node {
using namespace v8;
Persistent<FunctionTemplate> StatWatcher::constructor_template;
static Persistent<String> change_symbol;
static Persistent<String> stop_symbol;
void StatWatcher::Initialize(Handle<Object> target) {
HandleScope scope;
Local<FunctionTemplate> t = FunctionTemplate::New(StatWatcher::New);
constructor_template = Persistent<FunctionTemplate>::New(t);
constructor_template->Inherit(EventEmitter::constructor_template);
constructor_template->InstanceTemplate()->SetInternalFieldCount(1);
constructor_template->SetClassName(String::NewSymbol("StatWatcher"));
change_symbol = NODE_PSYMBOL("change");
stop_symbol = NODE_PSYMBOL("stop");
NODE_SET_PROTOTYPE_METHOD(constructor_template, "start", StatWatcher::Start);
NODE_SET_PROTOTYPE_METHOD(constructor_template, "stop", StatWatcher::Stop);
target->Set(String::NewSymbol("StatWatcher"), constructor_template->GetFunction());
}
void StatWatcher::Callback(EV_P_ ev_stat *watcher, int revents) {
assert(revents == EV_STAT);
StatWatcher *handler = static_cast<StatWatcher*>(watcher->data);
assert(watcher == &handler->watcher_);
HandleScope scope;
Handle<Value> argv[2];
argv[0] = Handle<Value>(BuildStatsObject(&watcher->attr));
argv[1] = Handle<Value>(BuildStatsObject(&watcher->prev));
handler->Emit(change_symbol, 2, argv);
}
Handle<Value> StatWatcher::New(const Arguments& args) {
if (!args.IsConstructCall()) {
return FromConstructorTemplate(constructor_template, args);
}
HandleScope scope;
StatWatcher *s = new StatWatcher();
s->Wrap(args.Holder());
return args.This();
}
Handle<Value> StatWatcher::Start(const Arguments& args) {
HandleScope scope;
if (args.Length() < 1 || !args[0]->IsString()) {
return ThrowException(Exception::TypeError(String::New("Bad arguments")));
}
StatWatcher *handler = ObjectWrap::Unwrap<StatWatcher>(args.Holder());
String::Utf8Value path(args[0]->ToString());
assert(handler->path_ == NULL);
handler->path_ = strdup(*path);
ev_tstamp interval = 0.;
if (args[2]->IsInt32()) {
interval = NODE_V8_UNIXTIME(args[2]);
}
ev_stat_set(&handler->watcher_, handler->path_, interval);
ev_stat_start(EV_DEFAULT_UC_ &handler->watcher_);
handler->persistent_ = args[1]->IsTrue();
if (!handler->persistent_) {
ev_unref(EV_DEFAULT_UC);
}
handler->Ref();
return Undefined();
}
Handle<Value> StatWatcher::Stop(const Arguments& args) {
HandleScope scope;
StatWatcher *handler = ObjectWrap::Unwrap<StatWatcher>(args.Holder());
handler->Emit(stop_symbol, 0, NULL);
handler->Stop();
return Undefined();
}
void StatWatcher::Stop () {
if (watcher_.active) {
if (!persistent_) ev_ref(EV_DEFAULT_UC);
ev_stat_stop(EV_DEFAULT_UC_ &watcher_);
free(path_);
path_ = NULL;
Unref();
}
}
} // namespace node
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