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GCC Code Coverage Report

Directory:	../		Exec	Total	Coverage
File:	/home/iojs/build/workspace/node-test-commit-linux-coverage-daily/nodes/benchmark/out/../src/stream_base.cc	Lines:	259	270	95.9 %
Date:	2019-09-12 22:30:12	Branches:	199	312	63.8 %


#include "stream_base.h"  // NOLINT(build/include_inline)
#include "stream_base-inl.h"
#include "stream_wrap.h"

#include "node.h"
#include "node_buffer.h"
#include "node_errors.h"
#include "env-inl.h"
#include "js_stream.h"
#include "string_bytes.h"
#include "util-inl.h"
#include "v8.h"

#include <climits>  // INT_MAX

namespace node {

using v8::Array;
using v8::ArrayBuffer;
using v8::Context;
using v8::DontDelete;
using v8::DontEnum;
using v8::External;
using v8::Function;
using v8::FunctionCallbackInfo;
using v8::HandleScope;
using v8::Integer;
using v8::Local;
using v8::MaybeLocal;
using v8::Object;
using v8::ReadOnly;
using v8::String;
using v8::Value;

template int StreamBase::WriteString<ASCII>(
    const FunctionCallbackInfo<Value>& args);
template int StreamBase::WriteString<UTF8>(
    const FunctionCallbackInfo<Value>& args);
template int StreamBase::WriteString<UCS2>(
    const FunctionCallbackInfo<Value>& args);
template int StreamBase::WriteString<LATIN1>(
    const FunctionCallbackInfo<Value>& args);


int StreamBase::ReadStartJS(const FunctionCallbackInfo<Value>& args) {
  return ReadStart();
}


int StreamBase::ReadStopJS(const FunctionCallbackInfo<Value>& args) {
  return ReadStop();
}

int StreamBase::UseUserBuffer(const FunctionCallbackInfo<Value>& args) {
  CHECK(Buffer::HasInstance(args[0]));

  uv_buf_t buf = uv_buf_init(Buffer::Data(args[0]), Buffer::Length(args[0]));
  PushStreamListener(new CustomBufferJSListener(buf));
  return 0;
}

int StreamBase::Shutdown(const FunctionCallbackInfo<Value>& args) {
  CHECK(args[0]->IsObject());
  Local<Object> req_wrap_obj = args[0].As<Object>();

  return Shutdown(req_wrap_obj);
}

void StreamBase::SetWriteResult(const StreamWriteResult& res) {
  env_->stream_base_state()[kBytesWritten] = res.bytes;
  env_->stream_base_state()[kLastWriteWasAsync] = res.async;
}

int StreamBase::Writev(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);

  CHECK(args[0]->IsObject());
  CHECK(args[1]->IsArray());

  Local<Object> req_wrap_obj = args[0].As<Object>();
  Local<Array> chunks = args[1].As<Array>();
  bool all_buffers = args[2]->IsTrue();

  size_t count;
  if (all_buffers)
    count = chunks->Length();
  else
    count = chunks->Length() >> 1;

  MaybeStackBuffer<uv_buf_t, 16> bufs(count);

  size_t storage_size = 0;
  size_t offset;

  if (!all_buffers) {
    // Determine storage size first
    for (size_t i = 0; i < count; i++) {
      Local<Value> chunk = chunks->Get(env->context(), i * 2).ToLocalChecked();

      if (Buffer::HasInstance(chunk))
        continue;
        // Buffer chunk, no additional storage required

      // String chunk
      Local<String> string = chunk->ToString(env->context()).ToLocalChecked();
      enum encoding encoding = ParseEncoding(env->isolate(),
          chunks->Get(env->context(), i * 2 + 1).ToLocalChecked());
      size_t chunk_size;
      if (encoding == UTF8 && string->Length() > 65535 &&
          !StringBytes::Size(env->isolate(), string, encoding).To(&chunk_size))
        return 0;
      else if (!StringBytes::StorageSize(env->isolate(), string, encoding)
                    .To(&chunk_size))
        return 0;
      storage_size += chunk_size;
    }

    if (storage_size > INT_MAX)
      return UV_ENOBUFS;
  } else {
    for (size_t i = 0; i < count; i++) {
      Local<Value> chunk = chunks->Get(env->context(), i).ToLocalChecked();
      bufs[i].base = Buffer::Data(chunk);
      bufs[i].len = Buffer::Length(chunk);
    }
  }

  AllocatedBuffer storage;
  if (storage_size > 0)
    storage = env->AllocateManaged(storage_size);

  offset = 0;
  if (!all_buffers) {
    for (size_t i = 0; i < count; i++) {
      Local<Value> chunk = chunks->Get(env->context(), i * 2).ToLocalChecked();

      // Write buffer
      if (Buffer::HasInstance(chunk)) {
        bufs[i].base = Buffer::Data(chunk);
        bufs[i].len = Buffer::Length(chunk);
        continue;
      }

      // Write string
      CHECK_LE(offset, storage_size);
      char* str_storage = storage.data() + offset;
      size_t str_size = storage.size() - offset;

      Local<String> string = chunk->ToString(env->context()).ToLocalChecked();
      enum encoding encoding = ParseEncoding(env->isolate(),
          chunks->Get(env->context(), i * 2 + 1).ToLocalChecked());
      str_size = StringBytes::Write(env->isolate(),
                                    str_storage,
                                    str_size,
                                    string,
                                    encoding);
      bufs[i].base = str_storage;
      bufs[i].len = str_size;
      offset += str_size;
    }
  }

  StreamWriteResult res = Write(*bufs, count, nullptr, req_wrap_obj);
  SetWriteResult(res);
  if (res.wrap != nullptr && storage_size > 0) {
    res.wrap->SetAllocatedStorage(std::move(storage));
  }
  return res.err;
}


int StreamBase::WriteBuffer(const FunctionCallbackInfo<Value>& args) {
  CHECK(args[0]->IsObject());

  Environment* env = Environment::GetCurrent(args);

  if (!args[1]->IsUint8Array()) {
    node::THROW_ERR_INVALID_ARG_TYPE(env, "Second argument must be a buffer");
    return 0;
  }

  Local<Object> req_wrap_obj = args[0].As<Object>();

  uv_buf_t buf;
  buf.base = Buffer::Data(args[1]);
  buf.len = Buffer::Length(args[1]);

  StreamWriteResult res = Write(&buf, 1, nullptr, req_wrap_obj);
  SetWriteResult(res);

  return res.err;
}


template <enum encoding enc>
int StreamBase::WriteString(const FunctionCallbackInfo<Value>& args) {
  Environment* env = Environment::GetCurrent(args);
  CHECK(args[0]->IsObject());
  CHECK(args[1]->IsString());

  Local<Object> req_wrap_obj = args[0].As<Object>();
  Local<String> string = args[1].As<String>();
  Local<Object> send_handle_obj;
  if (args[2]->IsObject())
    send_handle_obj = args[2].As<Object>();

  // Compute the size of the storage that the string will be flattened into.
  // For UTF8 strings that are very long, go ahead and take the hit for
  // computing their actual size, rather than tripling the storage.
  size_t storage_size;
  if (enc == UTF8 && string->Length() > 65535 &&
      !StringBytes::Size(env->isolate(), string, enc).To(&storage_size))
    return 0;
  else if (!StringBytes::StorageSize(env->isolate(), string, enc)
                .To(&storage_size))
    return 0;

  if (storage_size > INT_MAX)
    return UV_ENOBUFS;

  // Try writing immediately if write size isn't too big
  char stack_storage[16384];  // 16kb
  size_t data_size;
  size_t synchronously_written = 0;
  uv_buf_t buf;

  bool try_write = storage_size <= sizeof(stack_storage) &&
                   (!IsIPCPipe() || send_handle_obj.IsEmpty());
  if (try_write) {
    data_size = StringBytes::Write(env->isolate(),
                                   stack_storage,
                                   storage_size,
                                   string,
                                   enc);
    buf = uv_buf_init(stack_storage, data_size);

    uv_buf_t* bufs = &buf;
    size_t count = 1;
    const int err = DoTryWrite(&bufs, &count);
    // Keep track of the bytes written here, because we're taking a shortcut
    // by using `DoTryWrite()` directly instead of using the utilities
    // provided by `Write()`.
    synchronously_written = count == 0 ? data_size : data_size - buf.len;
    bytes_written_ += synchronously_written;

    // Immediate failure or success
    if (err != 0 || count == 0) {
      SetWriteResult(StreamWriteResult { false, err, nullptr, data_size });
      return err;
    }

    // Partial write
    CHECK_EQ(count, 1);
  }

  AllocatedBuffer data;

  if (try_write) {
    // Copy partial data
    data = env->AllocateManaged(buf.len);
    memcpy(data.data(), buf.base, buf.len);
    data_size = buf.len;
  } else {
    // Write it
    data = env->AllocateManaged(storage_size);
    data_size = StringBytes::Write(env->isolate(),
                                   data.data(),
                                   storage_size,
                                   string,
                                   enc);
  }

  CHECK_LE(data_size, storage_size);

  buf = uv_buf_init(data.data(), data_size);

  uv_stream_t* send_handle = nullptr;

  if (IsIPCPipe() && !send_handle_obj.IsEmpty()) {
    HandleWrap* wrap;
    ASSIGN_OR_RETURN_UNWRAP(&wrap, send_handle_obj, UV_EINVAL);
    send_handle = reinterpret_cast<uv_stream_t*>(wrap->GetHandle());
    // Reference LibuvStreamWrap instance to prevent it from being garbage
    // collected before `AfterWrite` is called.
    req_wrap_obj->Set(env->context(),
                      env->handle_string(),
                      send_handle_obj).Check();
  }

  StreamWriteResult res = Write(&buf, 1, send_handle, req_wrap_obj);
  res.bytes += synchronously_written;

  SetWriteResult(res);
  if (res.wrap != nullptr) {
    res.wrap->SetAllocatedStorage(std::move(data));
  }

  return res.err;
}


MaybeLocal<Value> StreamBase::CallJSOnreadMethod(ssize_t nread,
                                                 Local<ArrayBuffer> ab,
                                                 size_t offset,
                                                 StreamBaseJSChecks checks) {
  Environment* env = env_;

  DCHECK_EQ(static_cast<int32_t>(nread), nread);
  DCHECK_LE(offset, INT32_MAX);

  if (checks == DONT_SKIP_NREAD_CHECKS) {
    if (ab.IsEmpty()) {
      DCHECK_EQ(offset, 0);
      DCHECK_LE(nread, 0);
    } else {
      DCHECK_GE(nread, 0);
    }
  }

  env->stream_base_state()[kReadBytesOrError] = nread;
  env->stream_base_state()[kArrayBufferOffset] = offset;

  Local<Value> argv[] = {
    ab.IsEmpty() ? Undefined(env->isolate()).As<Value>() : ab.As<Value>()
  };

  AsyncWrap* wrap = GetAsyncWrap();
  CHECK_NOT_NULL(wrap);
  Local<Value> onread = wrap->object()->GetInternalField(kOnReadFunctionField);
  CHECK(onread->IsFunction());
  return wrap->MakeCallback(onread.As<Function>(), arraysize(argv), argv);
}


bool StreamBase::IsIPCPipe() {
  return false;
}


int StreamBase::GetFD() {
  return -1;
}


Local<Object> StreamBase::GetObject() {
  return GetAsyncWrap()->object();
}

void StreamBase::AddMethod(Environment* env,
                           Local<Signature> signature,
                           enum PropertyAttribute attributes,
                           Local<FunctionTemplate> t,
                           JSMethodFunction* stream_method,
                           Local<String> string) {
  Local<FunctionTemplate> templ =
      env->NewFunctionTemplate(stream_method,
                               signature,
                               v8::ConstructorBehavior::kThrow,
                               v8::SideEffectType::kHasNoSideEffect);
  t->PrototypeTemplate()->SetAccessorProperty(
      string, templ, Local<FunctionTemplate>(), attributes);
}

void StreamBase::AddMethods(Environment* env, Local<FunctionTemplate> t) {
  HandleScope scope(env->isolate());

  enum PropertyAttribute attributes =
      static_cast<PropertyAttribute>(ReadOnly | DontDelete | DontEnum);
  Local<Signature> sig = Signature::New(env->isolate(), t);

  AddMethod(env, sig, attributes, t, GetFD, env->fd_string());
  AddMethod(
      env, sig, attributes, t, GetExternal, env->external_stream_string());
  AddMethod(env, sig, attributes, t, GetBytesRead, env->bytes_read_string());
  AddMethod(
      env, sig, attributes, t, GetBytesWritten, env->bytes_written_string());
  env->SetProtoMethod(t, "readStart", JSMethod<&StreamBase::ReadStartJS>);
  env->SetProtoMethod(t, "readStop", JSMethod<&StreamBase::ReadStopJS>);
  env->SetProtoMethod(t, "shutdown", JSMethod<&StreamBase::Shutdown>);
  env->SetProtoMethod(t,
                      "useUserBuffer",
                      JSMethod<&StreamBase::UseUserBuffer>);
  env->SetProtoMethod(t, "writev", JSMethod<&StreamBase::Writev>);
  env->SetProtoMethod(t, "writeBuffer", JSMethod<&StreamBase::WriteBuffer>);
  env->SetProtoMethod(
      t, "writeAsciiString", JSMethod<&StreamBase::WriteString<ASCII>>);
  env->SetProtoMethod(
      t, "writeUtf8String", JSMethod<&StreamBase::WriteString<UTF8>>);
  env->SetProtoMethod(
      t, "writeUcs2String", JSMethod<&StreamBase::WriteString<UCS2>>);
  env->SetProtoMethod(
      t, "writeLatin1String", JSMethod<&StreamBase::WriteString<LATIN1>>);
  t->PrototypeTemplate()->Set(FIXED_ONE_BYTE_STRING(env->isolate(),
                                                    "isStreamBase"),
                              True(env->isolate()));
  t->PrototypeTemplate()->SetAccessor(
      FIXED_ONE_BYTE_STRING(env->isolate(), "onread"),
      BaseObject::InternalFieldGet<kOnReadFunctionField>,
      BaseObject::InternalFieldSet<kOnReadFunctionField, &Value::IsFunction>);
}

void StreamBase::GetFD(const FunctionCallbackInfo<Value>& args) {
  // Mimic implementation of StreamBase::GetFD() and UDPWrap::GetFD().
  StreamBase* wrap = StreamBase::FromObject(args.This().As<Object>());
  if (wrap == nullptr) return args.GetReturnValue().Set(UV_EINVAL);

  if (!wrap->IsAlive()) return args.GetReturnValue().Set(UV_EINVAL);

  args.GetReturnValue().Set(wrap->GetFD());
}

void StreamBase::GetBytesRead(const FunctionCallbackInfo<Value>& args) {
  StreamBase* wrap = StreamBase::FromObject(args.This().As<Object>());
  if (wrap == nullptr) return args.GetReturnValue().Set(0);

  // uint64_t -> double. 53bits is enough for all real cases.
  args.GetReturnValue().Set(static_cast<double>(wrap->bytes_read_));
}

void StreamBase::GetBytesWritten(const FunctionCallbackInfo<Value>& args) {
  StreamBase* wrap = StreamBase::FromObject(args.This().As<Object>());
  if (wrap == nullptr) return args.GetReturnValue().Set(0);

  // uint64_t -> double. 53bits is enough for all real cases.
  args.GetReturnValue().Set(static_cast<double>(wrap->bytes_written_));
}

void StreamBase::GetExternal(const FunctionCallbackInfo<Value>& args) {
  StreamBase* wrap = StreamBase::FromObject(args.This().As<Object>());
  if (wrap == nullptr) return;

  Local<External> ext = External::New(args.GetIsolate(), wrap);
  args.GetReturnValue().Set(ext);
}

template <int (StreamBase::*Method)(const FunctionCallbackInfo<Value>& args)>
void StreamBase::JSMethod(const FunctionCallbackInfo<Value>& args) {
  StreamBase* wrap = StreamBase::FromObject(args.Holder().As<Object>());
  if (wrap == nullptr) return;

  if (!wrap->IsAlive()) return args.GetReturnValue().Set(UV_EINVAL);

  AsyncHooks::DefaultTriggerAsyncIdScope trigger_scope(wrap->GetAsyncWrap());
  args.GetReturnValue().Set((wrap->*Method)(args));
}

int StreamResource::DoTryWrite(uv_buf_t** bufs, size_t* count) {
  // No TryWrite by default
  return 0;
}


const char* StreamResource::Error() const {
  return nullptr;
}


void StreamResource::ClearError() {
  // No-op
}


uv_buf_t EmitToJSStreamListener::OnStreamAlloc(size_t suggested_size) {
  CHECK_NOT_NULL(stream_);
  Environment* env = static_cast<StreamBase*>(stream_)->stream_env();
  return env->AllocateManaged(suggested_size).release();
}

void EmitToJSStreamListener::OnStreamRead(ssize_t nread, const uv_buf_t& buf_) {
  CHECK_NOT_NULL(stream_);
  StreamBase* stream = static_cast<StreamBase*>(stream_);
  Environment* env = stream->stream_env();
  HandleScope handle_scope(env->isolate());
  Context::Scope context_scope(env->context());
  AllocatedBuffer buf(env, buf_);

  if (nread <= 0)  {
    if (nread < 0)
      stream->CallJSOnreadMethod(nread, Local<ArrayBuffer>());
    return;
  }

  CHECK_LE(static_cast<size_t>(nread), buf.size());
  buf.Resize(nread);

  stream->CallJSOnreadMethod(nread, buf.ToArrayBuffer());
}


uv_buf_t CustomBufferJSListener::OnStreamAlloc(size_t suggested_size) {
  return buffer_;
}


void CustomBufferJSListener::OnStreamRead(ssize_t nread, const uv_buf_t& buf) {
  CHECK_NOT_NULL(stream_);
  CHECK_EQ(buf.base, buffer_.base);

  StreamBase* stream = static_cast<StreamBase*>(stream_);
  Environment* env = stream->stream_env();
  HandleScope handle_scope(env->isolate());
  Context::Scope context_scope(env->context());

  MaybeLocal<Value> ret = stream->CallJSOnreadMethod(nread,
                             Local<ArrayBuffer>(),
                             0,
                             StreamBase::SKIP_NREAD_CHECKS);
  Local<Value> next_buf_v;
  if (ret.ToLocal(&next_buf_v) && !next_buf_v->IsUndefined()) {
    buffer_.base = Buffer::Data(next_buf_v);
    buffer_.len = Buffer::Length(next_buf_v);
  }
}


void ReportWritesToJSStreamListener::OnStreamAfterReqFinished(
    StreamReq* req_wrap, int status) {
  StreamBase* stream = static_cast<StreamBase*>(stream_);
  Environment* env = stream->stream_env();
  AsyncWrap* async_wrap = req_wrap->GetAsyncWrap();
  HandleScope handle_scope(env->isolate());
  Context::Scope context_scope(env->context());
  CHECK(!async_wrap->persistent().IsEmpty());
  Local<Object> req_wrap_obj = async_wrap->object();

  Local<Value> argv[] = {
    Integer::New(env->isolate(), status),
    stream->GetObject(),
    Undefined(env->isolate())
  };

  const char* msg = stream->Error();
  if (msg != nullptr) {
    argv[2] = OneByteString(env->isolate(), msg);
    stream->ClearError();
  }

  if (req_wrap_obj->Has(env->context(), env->oncomplete_string()).FromJust())
    async_wrap->MakeCallback(env->oncomplete_string(), arraysize(argv), argv);
}

void ReportWritesToJSStreamListener::OnStreamAfterWrite(
    WriteWrap* req_wrap, int status) {
  OnStreamAfterReqFinished(req_wrap, status);
}

void ReportWritesToJSStreamListener::OnStreamAfterShutdown(
    ShutdownWrap* req_wrap, int status) {
  OnStreamAfterReqFinished(req_wrap, status);
}


}  // namespace node


Generated by: GCOVR (Version 3.4)

Line	Branch	Exec	Source
1			#include "stream_base.h" // NOLINT(build/include_inline)
2			#include "stream_base-inl.h"
3			#include "stream_wrap.h"
4
5			#include "node.h"
6			#include "node_buffer.h"
7			#include "node_errors.h"
8			#include "env-inl.h"
9			#include "js_stream.h"
10			#include "string_bytes.h"
11			#include "util-inl.h"
12			#include "v8.h"
13
14			#include <climits> // INT_MAX
15
16			namespace node {
17
18			using v8::Array;
19			using v8::ArrayBuffer;
20			using v8::Context;
21			using v8::DontDelete;
22			using v8::DontEnum;
23			using v8::External;
24			using v8::Function;
25			using v8::FunctionCallbackInfo;
26			using v8::HandleScope;
27			using v8::Integer;
28			using v8::Local;
29			using v8::MaybeLocal;
30			using v8::Object;
31			using v8::ReadOnly;
32			using v8::String;
33			using v8::Value;
34
35			template int StreamBase::WriteString<ASCII>(
36			const FunctionCallbackInfo<Value>& args);
37			template int StreamBase::WriteString<UTF8>(
38			const FunctionCallbackInfo<Value>& args);
39			template int StreamBase::WriteString<UCS2>(
40			const FunctionCallbackInfo<Value>& args);
41			template int StreamBase::WriteString<LATIN1>(
42			const FunctionCallbackInfo<Value>& args);
43
44
45		74856	int StreamBase::ReadStartJS(const FunctionCallbackInfo<Value>& args) {
46		74856	return ReadStart();
47			}
48
49
50		2038	int StreamBase::ReadStopJS(const FunctionCallbackInfo<Value>& args) {
51		2038	return ReadStop();
52			}
53
54		6	int StreamBase::UseUserBuffer(const FunctionCallbackInfo<Value>& args) {
55	✗✓	6	CHECK(Buffer::HasInstance(args[0]));
56
57		12	uv_buf_t buf = uv_buf_init(Buffer::Data(args[0]), Buffer::Length(args[0]));
58		6	PushStreamListener(new CustomBufferJSListener(buf));
59		6	return 0;
60			}
61
62		56064	int StreamBase::Shutdown(const FunctionCallbackInfo<Value>& args) {
63	✗✓	112128	CHECK(args[0]->IsObject());
64		112128	Local<Object> req_wrap_obj = args[0].As<Object>();
65
66		56064	return Shutdown(req_wrap_obj);
67			}
68
69		854232	void StreamBase::SetWriteResult(const StreamWriteResult& res) {
70		854232	env_->stream_base_state()[kBytesWritten] = res.bytes;
71		854232	env_->stream_base_state()[kLastWriteWasAsync] = res.async;
72		854232	}
73
74		113611	int StreamBase::Writev(const FunctionCallbackInfo<Value>& args) {
75		113611	Environment* env = Environment::GetCurrent(args);
76
77	✗✓	227222	CHECK(args[0]->IsObject());
78	✗✓	227222	CHECK(args[1]->IsArray());
79
80		227222	Local<Object> req_wrap_obj = args[0].As<Object>();
81		227222	Local<Array> chunks = args[1].As<Array>();
82		227222	bool all_buffers = args[2]->IsTrue();
83
84			size_t count;
85	✓✓	113611	if (all_buffers)
86		295	count = chunks->Length();
87			else
88		113316	count = chunks->Length() >> 1;
89
90		113611	MaybeStackBuffer<uv_buf_t, 16> bufs(count);
91
92		113611	size_t storage_size = 0;
93			size_t offset;
94
95	✓✓	113611	if (!all_buffers) {
96			// Determine storage size first
97	✓✓	628385	for (size_t i = 0; i < count; i++) {
98		1545207	Local<Value> chunk = chunks->Get(env->context(), i * 2).ToLocalChecked();
99
100	✓✓	515069	if (Buffer::HasInstance(chunk))
101		43266	continue;
102			// Buffer chunk, no additional storage required
103
104			// String chunk
105		1415409	Local<String> string = chunk->ToString(env->context()).ToLocalChecked();
106			enum encoding encoding = ParseEncoding(env->isolate(),
107		1415409	chunks->Get(env->context(), i * 2 + 1).ToLocalChecked());
108			size_t chunk_size;
109	✓✓✓✓ ✗✓✗✓	1698232	if (encoding == UTF8 && string->Length() > 65535 &&
110	✓✓✓✓	471815	!StringBytes::Size(env->isolate(), string, encoding).To(&chunk_size))
111			return 0;
112	✗✓	1415409	else if (!StringBytes::StorageSize(env->isolate(), string, encoding)
113		1415409	.To(&chunk_size))
114			return 0;
115		471803	storage_size += chunk_size;
116			}
117
118	✗✓	113316	if (storage_size > INT_MAX)
119			return UV_ENOBUFS;
120			} else {
121	✓✓	136700	for (size_t i = 0; i < count; i++) {
122		409215	Local<Value> chunk = chunks->Get(env->context(), i).ToLocalChecked();
123		136405	bufs[i].base = Buffer::Data(chunk);
124		136405	bufs[i].len = Buffer::Length(chunk);
125			}
126			}
127
128		227222	AllocatedBuffer storage;
129	✓✓	113611	if (storage_size > 0)
130		113270	storage = env->AllocateManaged(storage_size);
131
132		113611	offset = 0;
133	✓✓	113611	if (!all_buffers) {
134	✓✓	628385	for (size_t i = 0; i < count; i++) {
135		1545207	Local<Value> chunk = chunks->Get(env->context(), i * 2).ToLocalChecked();
136
137			// Write buffer
138	✓✓	515069	if (Buffer::HasInstance(chunk)) {
139		43266	bufs[i].base = Buffer::Data(chunk);
140		43266	bufs[i].len = Buffer::Length(chunk);
141		43266	continue;
142			}
143
144			// Write string
145	✗✓	471803	CHECK_LE(offset, storage_size);
146		471803	char* str_storage = storage.data() + offset;
147		471803	size_t str_size = storage.size() - offset;
148
149		1415409	Local<String> string = chunk->ToString(env->context()).ToLocalChecked();
150			enum encoding encoding = ParseEncoding(env->isolate(),
151		1415409	chunks->Get(env->context(), i * 2 + 1).ToLocalChecked());
152			str_size = StringBytes::Write(env->isolate(),
153			str_storage,
154			str_size,
155			string,
156		471803	encoding);
157		471803	bufs[i].base = str_storage;
158		471803	bufs[i].len = str_size;
159		471803	offset += str_size;
160			}
161			}
162
163		113611	StreamWriteResult res = Write(*bufs, count, nullptr, req_wrap_obj);
164		113611	SetWriteResult(res);
165	✓✓✓✓	113611	if (res.wrap != nullptr && storage_size > 0) {
166		344	res.wrap->SetAllocatedStorage(std::move(storage));
167			}
168		227222	return res.err;
169			}
170
171
172		51134	int StreamBase::WriteBuffer(const FunctionCallbackInfo<Value>& args) {
173	✗✓	102268	CHECK(args[0]->IsObject());
174
175		51134	Environment* env = Environment::GetCurrent(args);
176
177	✓✓	102268	if (!args[1]->IsUint8Array()) {
178		1	node::THROW_ERR_INVALID_ARG_TYPE(env, "Second argument must be a buffer");
179		1	return 0;
180			}
181
182		102266	Local<Object> req_wrap_obj = args[0].As<Object>();
183
184			uv_buf_t buf;
185		51133	buf.base = Buffer::Data(args[1]);
186		51133	buf.len = Buffer::Length(args[1]);
187
188		51133	StreamWriteResult res = Write(&buf, 1, nullptr, req_wrap_obj);
189		51133	SetWriteResult(res);
190
191		51133	return res.err;
192			}
193
194
195			template <enum encoding enc>
196		689488	int StreamBase::WriteString(const FunctionCallbackInfo<Value>& args) {
197		689488	Environment* env = Environment::GetCurrent(args);
198	✗✓✗✓ ✗✓✗✓	1378976	CHECK(args[0]->IsObject());
199	✗✓✗✓ ✗✓✗✓	2068464	CHECK(args[1]->IsString());
200
201		1378976	Local<Object> req_wrap_obj = args[0].As<Object>();
202		1378976	Local<String> string = args[1].As<String>();
203			Local<Object> send_handle_obj;
204	✗✓✗✓ ✓✓✗✓	1378976	if (args[2]->IsObject())
205		206	send_handle_obj = args[2].As<Object>();
206
207			// Compute the size of the storage that the string will be flattened into.
208			// For UTF8 strings that are very long, go ahead and take the hit for
209			// computing their actual size, rather than tripling the storage.
210			size_t storage_size;
211	✓✓✗✓ ✗✓	2707006	if (enc == UTF8 && string->Length() > 65535 &&
212	✓✓✓✓	676823	!StringBytes::Size(env->isolate(), string, enc).To(&storage_size))
213			return 0;
214	✗✓✗✓ ✗✓✗✓	2068464	else if (!StringBytes::StorageSize(env->isolate(), string, enc)
215		2068464	.To(&storage_size))
216			return 0;
217
218	✗✓✗✓ ✗✓✗✓	689488	if (storage_size > INT_MAX)
219			return UV_ENOBUFS;
220
221			// Try writing immediately if write size isn't too big
222			char stack_storage[16384]; // 16kb
223			size_t data_size;
224		689488	size_t synchronously_written = 0;
225			uv_buf_t buf;
226
227			bool try_write = storage_size <= sizeof(stack_storage) &&
228	✓✓✗✓ ✗✗✓✗ ✗✓✗✗ ✓✓✓✓ ✓✓✓✗ ✗✓✗✗	691340	(!IsIPCPipe() \|\| send_handle_obj.IsEmpty());
229	✓✓✓✗ ✓✓✓✗	689488	if (try_write) {
230		688333	data_size = StringBytes::Write(env->isolate(),
231			stack_storage,
232			storage_size,
233			string,
234		1376666	enc);
235		688333	buf = uv_buf_init(stack_storage, data_size);
236
237		688333	uv_buf_t* bufs = &buf;
238		688333	size_t count = 1;
239		688333	const int err = DoTryWrite(&bufs, &count);
240			// Keep track of the bytes written here, because we're taking a shortcut
241			// by using `DoTryWrite()` directly instead of using the utilities
242			// provided by `Write()`.
243	✓✓✓✗ ✓✓✓✓	688333	synchronously_written = count == 0 ? data_size : data_size - buf.len;
244		688333	bytes_written_ += synchronously_written;
245
246			// Immediate failure or success
247	✓✗✓✓ ✓✗✗✓ ✓✓✓✓ ✓✗✓✓	688333	if (err != 0 \|\| count == 0) {
248		686541	SetWriteResult(StreamWriteResult { false, err, nullptr, data_size });
249		686541	return err;
250			}
251
252			// Partial write
253	✗✓✗✓ ✗✓✗✓	1792	CHECK_EQ(count, 1);
254			}
255
256		2947	AllocatedBuffer data;
257
258	✓✓✓✗ ✓✓✓✗	2947	if (try_write) {
259			// Copy partial data
260		1792	data = env->AllocateManaged(buf.len);
261		1792	memcpy(data.data(), buf.base, buf.len);
262		1792	data_size = buf.len;
263			} else {
264			// Write it
265		1155	data = env->AllocateManaged(storage_size);
266		1155	data_size = StringBytes::Write(env->isolate(),
267			data.data(),
268			storage_size,
269			string,
270		2310	enc);
271			}
272
273	✗✓✗✓ ✗✓✗✓	2947	CHECK_LE(data_size, storage_size);
274
275		2947	buf = uv_buf_init(data.data(), data_size);
276
277		2947	uv_stream_t* send_handle = nullptr;
278
279	✗✓✗✗ ✗✓✗✓ ✗✗✗✓ ✓✓✓✓ ✓✓✗✓ ✗✗✗✓	3051	if (IsIPCPipe() && !send_handle_obj.IsEmpty()) {
280			HandleWrap* wrap;
281	✗✗✗✗ ✗✓✗✗	103	ASSIGN_OR_RETURN_UNWRAP(&wrap, send_handle_obj, UV_EINVAL);
282		103	send_handle = reinterpret_cast<uv_stream_t*>(wrap->GetHandle());
283			// Reference LibuvStreamWrap instance to prevent it from being garbage
284			// collected before `AfterWrite` is called.
285			req_wrap_obj->Set(env->context(),
286			env->handle_string(),
287		412	send_handle_obj).Check();
288			}
289
290		2947	StreamWriteResult res = Write(&buf, 1, send_handle, req_wrap_obj);
291		2947	res.bytes += synchronously_written;
292
293		2947	SetWriteResult(res);
294	✓✓✓✗ ✓✓✓✗	2947	if (res.wrap != nullptr) {
295		2922	res.wrap->SetAllocatedStorage(std::move(data));
296			}
297
298		2947	return res.err;
299			}
300
301
302		381035	MaybeLocal<Value> StreamBase::CallJSOnreadMethod(ssize_t nread,
303			Local<ArrayBuffer> ab,
304			size_t offset,
305			StreamBaseJSChecks checks) {
306		381035	Environment* env = env_;
307
308			DCHECK_EQ(static_cast<int32_t>(nread), nread);
309			DCHECK_LE(offset, INT32_MAX);
310
311	✓✓	381035	if (checks == DONT_SKIP_NREAD_CHECKS) {
312		381009	if (ab.IsEmpty()) {
313			DCHECK_EQ(offset, 0);
314			DCHECK_LE(nread, 0);
315			} else {
316			DCHECK_GE(nread, 0);
317			}
318			}
319
320		381035	env->stream_base_state()[kReadBytesOrError] = nread;
321		381035	env->stream_base_state()[kArrayBufferOffset] = offset;
322
323			Local<Value> argv[] = {
324	✓✓	906478	ab.IsEmpty() ? Undefined(env->isolate()).As<Value>() : ab.As<Value>()
325	✓✓	1905175	};
326
327		381035	AsyncWrap* wrap = GetAsyncWrap();
328	✗✓	381035	CHECK_NOT_NULL(wrap);
329		1143105	Local<Value> onread = wrap->object()->GetInternalField(kOnReadFunctionField);
330	✗✓	381035	CHECK(onread->IsFunction());
331		762070	return wrap->MakeCallback(onread.As<Function>(), arraysize(argv), argv);
332			}
333
334
335		3277	bool StreamBase::IsIPCPipe() {
336		3277	return false;
337			}
338
339
340			int StreamBase::GetFD() {
341			return -1;
342			}
343
344
345		74384	Local<Object> StreamBase::GetObject() {
346		74384	return GetAsyncWrap()->object();
347			}
348
349		44944	void StreamBase::AddMethod(Environment* env,
350			Local<Signature> signature,
351			enum PropertyAttribute attributes,
352			Local<FunctionTemplate> t,
353			JSMethodFunction* stream_method,
354			Local<String> string) {
355			Local<FunctionTemplate> templ =
356			env->NewFunctionTemplate(stream_method,
357			signature,
358			v8::ConstructorBehavior::kThrow,
359		44944	v8::SideEffectType::kHasNoSideEffect);
360		134832	t->PrototypeTemplate()->SetAccessorProperty(
361		89888	string, templ, Local<FunctionTemplate>(), attributes);
362		44944	}
363
364		11236	void StreamBase::AddMethods(Environment* env, Local<FunctionTemplate> t) {
365		11236	HandleScope scope(env->isolate());
366
367			enum PropertyAttribute attributes =
368		11236	static_cast<PropertyAttribute>(ReadOnly \| DontDelete \| DontEnum);
369		11236	Local<Signature> sig = Signature::New(env->isolate(), t);
370
371		11236	AddMethod(env, sig, attributes, t, GetFD, env->fd_string());
372			AddMethod(
373		11236	env, sig, attributes, t, GetExternal, env->external_stream_string());
374		11236	AddMethod(env, sig, attributes, t, GetBytesRead, env->bytes_read_string());
375			AddMethod(
376		11236	env, sig, attributes, t, GetBytesWritten, env->bytes_written_string());
377		11236	env->SetProtoMethod(t, "readStart", JSMethod<&StreamBase::ReadStartJS>);
378		11236	env->SetProtoMethod(t, "readStop", JSMethod<&StreamBase::ReadStopJS>);
379		11236	env->SetProtoMethod(t, "shutdown", JSMethod<&StreamBase::Shutdown>);
380			env->SetProtoMethod(t,
381			"useUserBuffer",
382		11236	JSMethod<&StreamBase::UseUserBuffer>);
383		11236	env->SetProtoMethod(t, "writev", JSMethod<&StreamBase::Writev>);
384		11236	env->SetProtoMethod(t, "writeBuffer", JSMethod<&StreamBase::WriteBuffer>);
385			env->SetProtoMethod(
386		11236	t, "writeAsciiString", JSMethod<&StreamBase::WriteString<ASCII>>);
387			env->SetProtoMethod(
388		11236	t, "writeUtf8String", JSMethod<&StreamBase::WriteString<UTF8>>);
389			env->SetProtoMethod(
390		11236	t, "writeUcs2String", JSMethod<&StreamBase::WriteString<UCS2>>);
391			env->SetProtoMethod(
392		11236	t, "writeLatin1String", JSMethod<&StreamBase::WriteString<LATIN1>>);
393		33708	t->PrototypeTemplate()->Set(FIXED_ONE_BYTE_STRING(env->isolate(),
394			"isStreamBase"),
395		44944	True(env->isolate()));
396		11236	t->PrototypeTemplate()->SetAccessor(
397			FIXED_ONE_BYTE_STRING(env->isolate(), "onread"),
398			BaseObject::InternalFieldGet<kOnReadFunctionField>,
399		33708	BaseObject::InternalFieldSet<kOnReadFunctionField, &Value::IsFunction>);
400		11236	}
401
402		195	void StreamBase::GetFD(const FunctionCallbackInfo<Value>& args) {
403			// Mimic implementation of StreamBase::GetFD() and UDPWrap::GetFD().
404		390	StreamBase* wrap = StreamBase::FromObject(args.This().As<Object>());
405	✗✓	195	if (wrap == nullptr) return args.GetReturnValue().Set(UV_EINVAL);
406
407	✗✓	195	if (!wrap->IsAlive()) return args.GetReturnValue().Set(UV_EINVAL);
408
409		585	args.GetReturnValue().Set(wrap->GetFD());
410			}
411
412		63178	void StreamBase::GetBytesRead(const FunctionCallbackInfo<Value>& args) {
413		126356	StreamBase* wrap = StreamBase::FromObject(args.This().As<Object>());
414	✓✓	126358	if (wrap == nullptr) return args.GetReturnValue().Set(0);
415
416			// uint64_t -> double. 53bits is enough for all real cases.
417		189531	args.GetReturnValue().Set(static_cast<double>(wrap->bytes_read_));
418			}
419
420		63178	void StreamBase::GetBytesWritten(const FunctionCallbackInfo<Value>& args) {
421		126356	StreamBase* wrap = StreamBase::FromObject(args.This().As<Object>());
422	✗✓	126356	if (wrap == nullptr) return args.GetReturnValue().Set(0);
423
424			// uint64_t -> double. 53bits is enough for all real cases.
425		189534	args.GetReturnValue().Set(static_cast<double>(wrap->bytes_written_));
426			}
427
428		2	void StreamBase::GetExternal(const FunctionCallbackInfo<Value>& args) {
429		4	StreamBase* wrap = StreamBase::FromObject(args.This().As<Object>());
430	✗✓	4	if (wrap == nullptr) return;
431
432		2	Local<External> ext = External::New(args.GetIsolate(), wrap);
433		4	args.GetReturnValue().Set(ext);
434			}
435
436			template <int (StreamBase::*Method)(const FunctionCallbackInfo<Value>& args)>
437		987198	void StreamBase::JSMethod(const FunctionCallbackInfo<Value>& args) {
438		1974396	StreamBase* wrap = StreamBase::FromObject(args.Holder().As<Object>());
439	✗✓✗✓ ✗✓✗✓ ✗✓✗✓ ✗✓✗✓ ✗✓✗✓	987199	if (wrap == nullptr) return;
440
441	✗✓✗✓ ✓✓✗✓ ✗✓✗✓ ✗✓✗✓ ✗✓✗✓	987200	if (!wrap->IsAlive()) return args.GetReturnValue().Set(UV_EINVAL);
442
443		987197	AsyncHooks::DefaultTriggerAsyncIdScope trigger_scope(wrap->GetAsyncWrap());
444		2961591	args.GetReturnValue().Set((wrap->*Method)(args));
445			}
446
447		7667	int StreamResource::DoTryWrite(uv_buf_t** bufs, size_t* count) {
448			// No TryWrite by default
449		7667	return 0;
450			}
451
452
453		96894	const char* StreamResource::Error() const {
454		96894	return nullptr;
455			}
456
457
458			void StreamResource::ClearError() {
459			// No-op
460			}
461
462
463		325727	uv_buf_t EmitToJSStreamListener::OnStreamAlloc(size_t suggested_size) {
464	✗✓	325727	CHECK_NOT_NULL(stream_);
465		325727	Environment* env = static_cast<StreamBase*>(stream_)->stream_env();
466		325727	return env->AllocateManaged(suggested_size).release();
467			}
468
469		368347	void EmitToJSStreamListener::OnStreamRead(ssize_t nread, const uv_buf_t& buf_) {
470	✗✓	368347	CHECK_NOT_NULL(stream_);
471		368347	StreamBase* stream = static_cast<StreamBase*>(stream_);
472		368347	Environment* env = stream->stream_env();
473		368347	HandleScope handle_scope(env->isolate());
474	✓✓	688519	Context::Scope context_scope(env->context());
475		688519	AllocatedBuffer buf(env, buf_);
476
477	✓✓	368347	if (nread <= 0) {
478	✓✓	48129	if (nread < 0)
479		48110	stream->CallJSOnreadMethod(nread, Local<ArrayBuffer>());
480		416372	return;
481			}
482
483	✗✓	320218	CHECK_LE(static_cast<size_t>(nread), buf.size());
484		320218	buf.Resize(nread);
485
486	✓✓	640390	stream->CallJSOnreadMethod(nread, buf.ToArrayBuffer());
487			}
488
489
490		26	uv_buf_t CustomBufferJSListener::OnStreamAlloc(size_t suggested_size) {
491		26	return buffer_;
492			}
493
494
495		26	void CustomBufferJSListener::OnStreamRead(ssize_t nread, const uv_buf_t& buf) {
496	✗✓	26	CHECK_NOT_NULL(stream_);
497	✗✓	26	CHECK_EQ(buf.base, buffer_.base);
498
499		26	StreamBase* stream = static_cast<StreamBase*>(stream_);
500		26	Environment* env = stream->stream_env();
501		26	HandleScope handle_scope(env->isolate());
502		26	Context::Scope context_scope(env->context());
503
504			MaybeLocal<Value> ret = stream->CallJSOnreadMethod(nread,
505			Local<ArrayBuffer>(),
506			0,
507		26	StreamBase::SKIP_NREAD_CHECKS);
508			Local<Value> next_buf_v;
509	✓✗✓✓ ✓✓	78	if (ret.ToLocal(&next_buf_v) && !next_buf_v->IsUndefined()) {
510		12	buffer_.base = Buffer::Data(next_buf_v);
511		12	buffer_.len = Buffer::Length(next_buf_v);
512		26	}
513		26	}
514
515
516		37619	void ReportWritesToJSStreamListener::OnStreamAfterReqFinished(
517			StreamReq* req_wrap, int status) {
518		37619	StreamBase* stream = static_cast<StreamBase*>(stream_);
519		37619	Environment* env = stream->stream_env();
520		37619	AsyncWrap* async_wrap = req_wrap->GetAsyncWrap();
521		37619	HandleScope handle_scope(env->isolate());
522		37619	Context::Scope context_scope(env->context());
523	✗✓	75238	CHECK(!async_wrap->persistent().IsEmpty());
524		37619	Local<Object> req_wrap_obj = async_wrap->object();
525
526			Local<Value> argv[] = {
527			Integer::New(env->isolate(), status),
528		37619	stream->GetObject(),
529			Undefined(env->isolate())
530		188095	};
531
532		37619	const char* msg = stream->Error();
533	✗✓	37619	if (msg != nullptr) {
534			argv[2] = OneByteString(env->isolate(), msg);
535			stream->ClearError();
536			}
537
538	✓✓	150476	if (req_wrap_obj->Has(env->context(), env->oncomplete_string()).FromJust())
539		75234	async_wrap->MakeCallback(env->oncomplete_string(), arraysize(argv), argv);
540		37617	}
541
542		4807	void ReportWritesToJSStreamListener::OnStreamAfterWrite(
543			WriteWrap* req_wrap, int status) {
544		4807	OnStreamAfterReqFinished(req_wrap, status);
545		4805	}
546
547		32812	void ReportWritesToJSStreamListener::OnStreamAfterShutdown(
548			ShutdownWrap* req_wrap, int status) {
549		32812	OnStreamAfterReqFinished(req_wrap, status);
550		32812	}
551
552
553			} // namespace node