GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: stream_base-inl.h Lines: 157 165 95.2 %
Date: 2022-01-15 04:15:29 Branches: 45 60 75.0 %

Line Branch Exec Source
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#ifndef SRC_STREAM_BASE_INL_H_
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#define SRC_STREAM_BASE_INL_H_
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#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
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#include "async_wrap-inl.h"
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#include "base_object-inl.h"
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#include "node.h"
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#include "stream_base.h"
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#include "v8.h"
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namespace node {
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StreamReq::StreamReq(
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    StreamBase* stream,
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    v8::Local<v8::Object> req_wrap_obj) : stream_(stream) {
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  AttachToObject(req_wrap_obj);
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}
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void StreamReq::AttachToObject(v8::Local<v8::Object> req_wrap_obj) {
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  CHECK_EQ(req_wrap_obj->GetAlignedPointerFromInternalField(
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               StreamReq::kStreamReqField),
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           nullptr);
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  req_wrap_obj->SetAlignedPointerInInternalField(
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      StreamReq::kStreamReqField, this);
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}
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StreamReq* StreamReq::FromObject(v8::Local<v8::Object> req_wrap_obj) {
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  return static_cast<StreamReq*>(
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      req_wrap_obj->GetAlignedPointerFromInternalField(
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          StreamReq::kStreamReqField));
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}
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void StreamReq::Dispose() {
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  BaseObjectPtr<AsyncWrap> destroy_me{GetAsyncWrap()};
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  object()->SetAlignedPointerInInternalField(
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      StreamReq::kStreamReqField, nullptr);
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  destroy_me->Detach();
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}
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v8::Local<v8::Object> StreamReq::object() {
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  return GetAsyncWrap()->object();
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}
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ShutdownWrap::ShutdownWrap(
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    StreamBase* stream,
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    v8::Local<v8::Object> req_wrap_obj)
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    : StreamReq(stream, req_wrap_obj) { }
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WriteWrap::WriteWrap(
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    StreamBase* stream,
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    v8::Local<v8::Object> req_wrap_obj)
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    : StreamReq(stream, req_wrap_obj) { }
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void StreamListener::PassReadErrorToPreviousListener(ssize_t nread) {
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  CHECK_NOT_NULL(previous_listener_);
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  previous_listener_->OnStreamRead(nread, uv_buf_init(nullptr, 0));
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}
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void StreamResource::PushStreamListener(StreamListener* listener) {
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  CHECK_NOT_NULL(listener);
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  CHECK_NULL(listener->stream_);
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  listener->previous_listener_ = listener_;
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  listener->stream_ = this;
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  listener_ = listener;
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}
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void StreamResource::RemoveStreamListener(StreamListener* listener) {
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  CHECK_NOT_NULL(listener);
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  StreamListener* previous;
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  StreamListener* current;
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  // Remove from the linked list.
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  for (current = listener_, previous = nullptr;
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       /* No loop condition because we want a crash if listener is not found */
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       ; previous = current, current = current->previous_listener_) {
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    CHECK_NOT_NULL(current);
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    if (current == listener) {
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      if (previous != nullptr)
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        previous->previous_listener_ = current->previous_listener_;
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      else
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        listener_ = listener->previous_listener_;
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      break;
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    }
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  }
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  listener->stream_ = nullptr;
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  listener->previous_listener_ = nullptr;
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}
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uv_buf_t StreamResource::EmitAlloc(size_t suggested_size) {
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  DebugSealHandleScope seal_handle_scope;
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  return listener_->OnStreamAlloc(suggested_size);
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}
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void StreamResource::EmitRead(ssize_t nread, const uv_buf_t& buf) {
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  DebugSealHandleScope seal_handle_scope;
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  if (nread > 0)
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    bytes_read_ += static_cast<uint64_t>(nread);
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  listener_->OnStreamRead(nread, buf);
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}
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void StreamResource::EmitAfterWrite(WriteWrap* w, int status) {
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  DebugSealHandleScope seal_handle_scope;
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  listener_->OnStreamAfterWrite(w, status);
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}
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void StreamResource::EmitAfterShutdown(ShutdownWrap* w, int status) {
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  DebugSealHandleScope seal_handle_scope;
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  listener_->OnStreamAfterShutdown(w, status);
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}
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void StreamResource::EmitWantsWrite(size_t suggested_size) {
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  DebugSealHandleScope seal_handle_scope;
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  listener_->OnStreamWantsWrite(suggested_size);
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}
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StreamBase::StreamBase(Environment* env) : env_(env) {
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  PushStreamListener(&default_listener_);
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}
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int StreamBase::Shutdown(v8::Local<v8::Object> req_wrap_obj) {
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  Environment* env = stream_env();
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  v8::HandleScope handle_scope(env->isolate());
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  if (req_wrap_obj.IsEmpty()) {
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    if (!env->shutdown_wrap_template()
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             ->NewInstance(env->context())
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             .ToLocal(&req_wrap_obj)) {
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      return UV_EBUSY;
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    }
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    StreamReq::ResetObject(req_wrap_obj);
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  }
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  BaseObjectPtr<AsyncWrap> req_wrap_ptr;
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  AsyncHooks::DefaultTriggerAsyncIdScope trigger_scope(GetAsyncWrap());
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  ShutdownWrap* req_wrap = CreateShutdownWrap(req_wrap_obj);
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  if (req_wrap != nullptr)
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    req_wrap_ptr.reset(req_wrap->GetAsyncWrap());
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  int err = DoShutdown(req_wrap);
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  if (err != 0 && req_wrap != nullptr) {
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    req_wrap->Dispose();
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  }
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  const char* msg = Error();
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  if (msg != nullptr) {
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    if (req_wrap_obj->Set(env->context(),
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                          env->error_string(),
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                          OneByteString(env->isolate(), msg)).IsNothing()) {
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      return UV_EBUSY;
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    }
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    ClearError();
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  }
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  return err;
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}
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StreamWriteResult StreamBase::Write(
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    uv_buf_t* bufs,
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    size_t count,
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    uv_stream_t* send_handle,
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    v8::Local<v8::Object> req_wrap_obj) {
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  Environment* env = stream_env();
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  int err;
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  size_t total_bytes = 0;
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  for (size_t i = 0; i < count; ++i)
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    total_bytes += bufs[i].len;
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  bytes_written_ += total_bytes;
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  if (send_handle == nullptr) {
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    err = DoTryWrite(&bufs, &count);
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    if (err != 0 || count == 0) {
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      return StreamWriteResult { false, err, nullptr, total_bytes, {} };
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    }
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  }
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  v8::HandleScope handle_scope(env->isolate());
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  if (req_wrap_obj.IsEmpty()) {
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    if (!env->write_wrap_template()
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             ->NewInstance(env->context())
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             .ToLocal(&req_wrap_obj)) {
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      return StreamWriteResult { false, UV_EBUSY, nullptr, 0, {} };
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    }
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    StreamReq::ResetObject(req_wrap_obj);
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  }
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  AsyncHooks::DefaultTriggerAsyncIdScope trigger_scope(GetAsyncWrap());
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  WriteWrap* req_wrap = CreateWriteWrap(req_wrap_obj);
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  BaseObjectPtr<AsyncWrap> req_wrap_ptr(req_wrap->GetAsyncWrap());
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  err = DoWrite(req_wrap, bufs, count, send_handle);
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  bool async = err == 0;
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  if (!async) {
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    req_wrap->Dispose();
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    req_wrap = nullptr;
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  }
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  const char* msg = Error();
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  if (msg != nullptr) {
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    if (req_wrap_obj->Set(env->context(),
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                          env->error_string(),
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                          OneByteString(env->isolate(), msg)).IsNothing()) {
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      return StreamWriteResult { false, UV_EBUSY, nullptr, 0, {} };
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    }
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    ClearError();
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  }
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  return StreamWriteResult {
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      async, err, req_wrap, total_bytes, std::move(req_wrap_ptr) };
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}
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template <typename OtherBase>
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SimpleShutdownWrap<OtherBase>::SimpleShutdownWrap(
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    StreamBase* stream,
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    v8::Local<v8::Object> req_wrap_obj)
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  : ShutdownWrap(stream, req_wrap_obj),
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    OtherBase(stream->stream_env(),
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              req_wrap_obj,
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              AsyncWrap::PROVIDER_SHUTDOWNWRAP) {
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}
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template <typename OtherBase>
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SimpleWriteWrap<OtherBase>::SimpleWriteWrap(
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    StreamBase* stream,
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    v8::Local<v8::Object> req_wrap_obj)
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  : WriteWrap(stream, req_wrap_obj),
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    OtherBase(stream->stream_env(),
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              req_wrap_obj,
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              AsyncWrap::PROVIDER_WRITEWRAP) {
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}
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void StreamBase::AttachToObject(v8::Local<v8::Object> obj) {
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  obj->SetAlignedPointerInInternalField(
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      StreamBase::kStreamBaseField, this);
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}
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StreamBase* StreamBase::FromObject(v8::Local<v8::Object> obj) {
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  if (obj->GetAlignedPointerFromInternalField(StreamBase::kSlot) == nullptr)
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    return nullptr;
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  return static_cast<StreamBase*>(
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      obj->GetAlignedPointerFromInternalField(
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          StreamBase::kStreamBaseField));
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}
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WriteWrap* WriteWrap::FromObject(v8::Local<v8::Object> req_wrap_obj) {
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  return static_cast<WriteWrap*>(StreamReq::FromObject(req_wrap_obj));
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}
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template <typename T, bool kIsWeak>
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WriteWrap* WriteWrap::FromObject(
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    const BaseObjectPtrImpl<T, kIsWeak>& base_obj) {
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  if (!base_obj) return nullptr;
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  return FromObject(base_obj->object());
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}
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ShutdownWrap* ShutdownWrap::FromObject(v8::Local<v8::Object> req_wrap_obj) {
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  return static_cast<ShutdownWrap*>(StreamReq::FromObject(req_wrap_obj));
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}
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template <typename T, bool kIsWeak>
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ShutdownWrap* ShutdownWrap::FromObject(
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    const BaseObjectPtrImpl<T, kIsWeak>& base_obj) {
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  if (!base_obj) return nullptr;
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  return FromObject(base_obj->object());
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}
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void WriteWrap::SetBackingStore(std::unique_ptr<v8::BackingStore> bs) {
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  CHECK(!backing_store_);
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  backing_store_ = std::move(bs);
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}
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void StreamReq::Done(int status, const char* error_str) {
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  AsyncWrap* async_wrap = GetAsyncWrap();
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  Environment* env = async_wrap->env();
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  if (error_str != nullptr) {
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    v8::HandleScope handle_scope(env->isolate());
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    if (async_wrap->object()->Set(
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            env->context(),
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            env->error_string(),
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            OneByteString(env->isolate(), error_str)).IsNothing()) {
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      return;
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    }
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  }
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  OnDone(status);
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}
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void StreamReq::ResetObject(v8::Local<v8::Object> obj) {
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  DCHECK_GT(obj->InternalFieldCount(), StreamReq::kStreamReqField);
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  obj->SetAlignedPointerInInternalField(StreamReq::kSlot, nullptr);
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  obj->SetAlignedPointerInInternalField(StreamReq::kStreamReqField, nullptr);
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}
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}  // namespace node
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#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
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#endif  // SRC_STREAM_BASE_INL_H_