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