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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
#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> onchange_sym;
static Persistent<String> onstop_sym;
void StatWatcher::Initialize(Handle<Object> target) {
HandleScope scope;
Local<FunctionTemplate> t = FunctionTemplate::New(StatWatcher::New);
constructor_template = Persistent<FunctionTemplate>::New(t);
constructor_template->InstanceTemplate()->SetInternalFieldCount(1);
constructor_template->SetClassName(String::NewSymbol("StatWatcher"));
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());
}
static void Delete(uv_handle_t* handle) {
delete reinterpret_cast<uv_fs_poll_t*>(handle);
}
StatWatcher::StatWatcher()
: ObjectWrap()
, watcher_(new uv_fs_poll_t)
{
uv_fs_poll_init(uv_default_loop(), watcher_);
watcher_->data = static_cast<void*>(this);
}
StatWatcher::~StatWatcher() {
Stop();
uv_close(reinterpret_cast<uv_handle_t*>(watcher_), Delete);
}
void StatWatcher::Callback(uv_fs_poll_t* handle,
int status,
const uv_statbuf_t* prev,
const uv_statbuf_t* curr) {
StatWatcher* wrap = static_cast<StatWatcher*>(handle->data);
assert(wrap->watcher_ == handle);
HandleScope scope;
Local<Value> argv[3];
argv[0] = BuildStatsObject(curr);
argv[1] = BuildStatsObject(prev);
argv[2] = Integer::New(status);
if (status == -1) {
SetErrno(uv_last_error(wrap->watcher_->loop));
}
if (onchange_sym.IsEmpty()) {
onchange_sym = NODE_PSYMBOL("onchange");
}
MakeCallback(wrap->handle_, onchange_sym, ARRAY_SIZE(argv), argv);
}
Handle<Value> StatWatcher::New(const Arguments& args) {
assert(args.IsConstructCall());
HandleScope scope;
StatWatcher* s = new StatWatcher();
s->Wrap(args.Holder());
return args.This();
}
Handle<Value> StatWatcher::Start(const Arguments& args) {
assert(args.Length() == 3);
HandleScope scope;
StatWatcher* wrap = ObjectWrap::Unwrap<StatWatcher>(args.Holder());
String::Utf8Value path(args[0]);
const bool persistent = args[1]->BooleanValue();
const uint32_t interval = args[2]->Uint32Value();
if (!persistent) uv_unref(reinterpret_cast<uv_handle_t*>(wrap->watcher_));
uv_fs_poll_start(wrap->watcher_, Callback, *path, interval);
wrap->Ref();
return Undefined();
}
Handle<Value> StatWatcher::Stop(const Arguments& args) {
HandleScope scope;
StatWatcher* wrap = ObjectWrap::Unwrap<StatWatcher>(args.Holder());
if (onstop_sym.IsEmpty()) {
onstop_sym = NODE_PSYMBOL("onstop");
}
MakeCallback(wrap->handle_, onstop_sym, 0, NULL);
wrap->Stop();
return Undefined();
}
void StatWatcher::Stop () {
if (!uv_is_active(reinterpret_cast<uv_handle_t*>(watcher_))) return;
uv_fs_poll_stop(watcher_);
Unref();
}
} // namespace node
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