mirror of
https://github.com/nodejs/node.git
synced 2026-11-09 15:11:11 -05:00
Ben Noordhuis
2d82cdf670
Now that we are building with C++11 features enabled, replace use of NULL with nullptr. The benefit of using nullptr is that it can never be confused for an integral type because it does not support implicit conversions to integral types except boolean - unlike NULL, which is defined as a literal `0`.
139 lines
4.2 KiB
C++
139 lines
4.2 KiB
C++
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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#include "node_stat_watcher.h"
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#include "async-wrap.h"
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#include "async-wrap-inl.h"
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#include "env.h"
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#include "env-inl.h"
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#include "util.h"
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#include "util-inl.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 v8::Context;
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using v8::FunctionCallbackInfo;
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using v8::FunctionTemplate;
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using v8::Handle;
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using v8::HandleScope;
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using v8::Integer;
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using v8::Local;
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using v8::Object;
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using v8::Value;
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void StatWatcher::Initialize(Environment* env, Handle<Object> target) {
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HandleScope scope(env->isolate());
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Local<FunctionTemplate> t = env->NewFunctionTemplate(StatWatcher::New);
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t->InstanceTemplate()->SetInternalFieldCount(1);
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t->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "StatWatcher"));
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env->SetProtoMethod(t, "start", StatWatcher::Start);
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env->SetProtoMethod(t, "stop", StatWatcher::Stop);
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target->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "StatWatcher"),
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t->GetFunction());
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}
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static void Delete(uv_handle_t* handle) {
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delete reinterpret_cast<uv_fs_poll_t*>(handle);
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}
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StatWatcher::StatWatcher(Environment* env, Local<Object> wrap)
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: AsyncWrap(env, wrap, AsyncWrap::PROVIDER_STATWATCHER),
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watcher_(new uv_fs_poll_t) {
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MakeWeak<StatWatcher>(this);
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uv_fs_poll_init(env->event_loop(), watcher_);
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watcher_->data = static_cast<void*>(this);
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}
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StatWatcher::~StatWatcher() {
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Stop();
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uv_close(reinterpret_cast<uv_handle_t*>(watcher_), Delete);
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}
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void StatWatcher::Callback(uv_fs_poll_t* handle,
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int status,
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const uv_stat_t* prev,
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const uv_stat_t* curr) {
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StatWatcher* wrap = static_cast<StatWatcher*>(handle->data);
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CHECK_EQ(wrap->watcher_, handle);
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Environment* env = wrap->env();
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HandleScope handle_scope(env->isolate());
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Context::Scope context_scope(env->context());
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Local<Value> argv[] = {
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BuildStatsObject(env, curr),
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BuildStatsObject(env, prev),
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Integer::New(env->isolate(), status)
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};
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wrap->MakeCallback(env->onchange_string(), ARRAY_SIZE(argv), argv);
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}
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void StatWatcher::New(const FunctionCallbackInfo<Value>& args) {
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CHECK(args.IsConstructCall());
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Environment* env = Environment::GetCurrent(args);
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new StatWatcher(env, args.This());
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}
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void StatWatcher::Start(const FunctionCallbackInfo<Value>& args) {
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CHECK_EQ(args.Length(), 3);
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StatWatcher* wrap = Unwrap<StatWatcher>(args.Holder());
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node::Utf8Value path(args[0]);
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const bool persistent = args[1]->BooleanValue();
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const uint32_t interval = args[2]->Uint32Value();
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if (!persistent)
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uv_unref(reinterpret_cast<uv_handle_t*>(wrap->watcher_));
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uv_fs_poll_start(wrap->watcher_, Callback, *path, interval);
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wrap->ClearWeak();
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}
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void StatWatcher::Stop(const FunctionCallbackInfo<Value>& args) {
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StatWatcher* wrap = Unwrap<StatWatcher>(args.Holder());
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Environment* env = wrap->env();
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Context::Scope context_scope(env->context());
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wrap->MakeCallback(env->onstop_string(), 0, nullptr);
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wrap->Stop();
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}
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void StatWatcher::Stop() {
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if (!uv_is_active(reinterpret_cast<uv_handle_t*>(watcher_)))
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return;
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uv_fs_poll_stop(watcher_);
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MakeWeak<StatWatcher>(this);
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}
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} // namespace node
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