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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 "async-wrap.h"
#include "async-wrap-inl.h"
#include "env.h"
#include "env-inl.h"
#include "util.h"
#include "util-inl.h"
#include <assert.h>
#include <string.h>
#include <stdlib.h>
namespace node {
using v8::Context;
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::Handle;
using v8::HandleScope;
using v8::Integer;
using v8::Local;
using v8::Object;
using v8::String;
using v8::Value;
void StatWatcher::Initialize(Environment* env, Handle<Object> target) {
HandleScope scope(env->isolate());
Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(),
StatWatcher::New);
t->InstanceTemplate()->SetInternalFieldCount(1);
t->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "StatWatcher"));
NODE_SET_PROTOTYPE_METHOD(t, "start", StatWatcher::Start);
NODE_SET_PROTOTYPE_METHOD(t, "stop", StatWatcher::Stop);
target->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "StatWatcher"),
t->GetFunction());
}
static void Delete(uv_handle_t* handle) {
delete reinterpret_cast<uv_fs_poll_t*>(handle);
}
StatWatcher::StatWatcher(Environment* env, Local<Object> wrap)
: AsyncWrap(env, wrap, AsyncWrap::PROVIDER_STATWATCHER),
watcher_(new uv_fs_poll_t) {
MakeWeak<StatWatcher>(this);
uv_fs_poll_init(env->event_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_stat_t* prev,
const uv_stat_t* curr) {
StatWatcher* wrap = static_cast<StatWatcher*>(handle->data);
assert(wrap->watcher_ == handle);
Environment* env = wrap->env();
HandleScope handle_scope(env->isolate());
Context::Scope context_scope(env->context());
Local<Value> argv[] = {
BuildStatsObject(env, curr),
BuildStatsObject(env, prev),
Integer::New(env->isolate(), status)
};
wrap->MakeCallback(env->onchange_string(), ARRAY_SIZE(argv), argv);
}
void StatWatcher::New(const FunctionCallbackInfo<Value>& args) {
assert(args.IsConstructCall());
HandleScope handle_scope(args.GetIsolate());
Environment* env = Environment::GetCurrent(args.GetIsolate());
new StatWatcher(env, args.This());
}
void StatWatcher::Start(const FunctionCallbackInfo<Value>& args) {
assert(args.Length() == 3);
Environment* env = Environment::GetCurrent(args.GetIsolate());
HandleScope scope(env->isolate());
StatWatcher* wrap = Unwrap<StatWatcher>(args.Holder());
node::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->ClearWeak();
}
void StatWatcher::Stop(const FunctionCallbackInfo<Value>& args) {
StatWatcher* wrap = Unwrap<StatWatcher>(args.Holder());
Environment* env = wrap->env();
HandleScope handle_scope(env->isolate());
Context::Scope context_scope(env->context());
wrap->MakeCallback(env->onstop_string(), 0, NULL);
wrap->Stop();
}
void StatWatcher::Stop() {
if (!uv_is_active(reinterpret_cast<uv_handle_t*>(watcher_)))
return;
uv_fs_poll_stop(watcher_);
MakeWeak<StatWatcher>(this);
}
} // namespace node
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