GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: node_stat_watcher.cc Lines: 46 47 97.9 %
Date: 2022-10-14 05:16:24 Branches: 10 20 50.0 %

Line Branch Exec Source
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// 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-inl.h"
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#include "env-inl.h"
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#include "memory_tracker-inl.h"
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#include "node_external_reference.h"
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#include "node_file-inl.h"
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#include "util-inl.h"
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#include <cstring>
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#include <cstdlib>
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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::HandleScope;
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using v8::Integer;
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using v8::Isolate;
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using v8::Local;
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using v8::Object;
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using v8::Uint32;
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using v8::Value;
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void StatWatcher::Initialize(Environment* env, Local<Object> target) {
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  Isolate* isolate = env->isolate();
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  HandleScope scope(env->isolate());
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  Local<FunctionTemplate> t = NewFunctionTemplate(isolate, StatWatcher::New);
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  t->InstanceTemplate()->SetInternalFieldCount(
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      StatWatcher::kInternalFieldCount);
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  t->Inherit(HandleWrap::GetConstructorTemplate(env));
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  SetProtoMethod(isolate, t, "start", StatWatcher::Start);
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  SetConstructorFunction(env->context(), target, "StatWatcher", t);
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}
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void StatWatcher::RegisterExternalReferences(
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    ExternalReferenceRegistry* registry) {
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  registry->Register(StatWatcher::New);
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  registry->Register(StatWatcher::Start);
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}
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StatWatcher::StatWatcher(fs::BindingData* binding_data,
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                         Local<Object> wrap,
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                         bool use_bigint)
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    : HandleWrap(binding_data->env(),
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                 wrap,
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                 reinterpret_cast<uv_handle_t*>(&watcher_),
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                 AsyncWrap::PROVIDER_STATWATCHER),
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      use_bigint_(use_bigint),
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      binding_data_(binding_data) {
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  CHECK_EQ(0, uv_fs_poll_init(env()->event_loop(), &watcher_));
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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 = ContainerOf(&StatWatcher::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> arr = fs::FillGlobalStatsArray(
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      wrap->binding_data_.get(), wrap->use_bigint_, curr);
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  USE(fs::FillGlobalStatsArray(
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      wrap->binding_data_.get(), wrap->use_bigint_, prev, true));
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  Local<Value> argv[2] = { Integer::New(env->isolate(), status), arr };
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  wrap->MakeCallback(env->onchange_string(), arraysize(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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  fs::BindingData* binding_data =
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      Environment::GetBindingData<fs::BindingData>(args);
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  new StatWatcher(binding_data, args.This(), args[0]->IsTrue());
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}
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// wrap.start(filename, interval)
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void StatWatcher::Start(const FunctionCallbackInfo<Value>& args) {
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  CHECK_EQ(args.Length(), 2);
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  StatWatcher* wrap;
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  ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());
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  CHECK(!uv_is_active(wrap->GetHandle()));
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  node::Utf8Value path(args.GetIsolate(), args[0]);
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  CHECK_NOT_NULL(*path);
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  CHECK(args[1]->IsUint32());
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  const uint32_t interval = args[1].As<Uint32>()->Value();
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  // Note that uv_fs_poll_start does not return ENOENT, we are handling
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  // mostly memory errors here.
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  const int err = uv_fs_poll_start(&wrap->watcher_, Callback, *path, interval);
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  if (err != 0) {
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    args.GetReturnValue().Set(err);
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  }
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}
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}  // namespace node