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