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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	stream_pipe.cc	Lines:	142	192	74.0 %
Date:	2022-06-06 04:15:48	Branches:	52	110	47.3 %


#include "stream_pipe.h"
#include "stream_base-inl.h"
#include "node_buffer.h"
#include "util-inl.h"

namespace node {

using v8::BackingStore;
using v8::Context;
using v8::Function;
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::HandleScope;
using v8::Just;
using v8::Local;
using v8::Maybe;
using v8::Nothing;
using v8::Object;
using v8::Value;

StreamPipe::StreamPipe(StreamBase* source,
                       StreamBase* sink,
                       Local<Object> obj)
    : AsyncWrap(source->stream_env(), obj, AsyncWrap::PROVIDER_STREAMPIPE) {
  MakeWeak();

  CHECK_NOT_NULL(sink);
  CHECK_NOT_NULL(source);

  source->PushStreamListener(&readable_listener_);
  sink->PushStreamListener(&writable_listener_);

  uses_wants_write_ = sink->HasWantsWrite();
}

StreamPipe::~StreamPipe() {
  Unpipe(true);
}

StreamBase* StreamPipe::source() {
  return static_cast<StreamBase*>(readable_listener_.stream());
}

StreamBase* StreamPipe::sink() {
  return static_cast<StreamBase*>(writable_listener_.stream());
}

void StreamPipe::Unpipe(bool is_in_deletion) {
  if (is_closed_)
    return;

  // Note that we possibly cannot use virtual methods on `source` and `sink`
  // here, because this function can be called from their destructors via
  // `OnStreamDestroy()`.
  if (!source_destroyed_)
    source()->ReadStop();

  is_closed_ = true;
  is_reading_ = false;
  source()->RemoveStreamListener(&readable_listener_);
  if (pending_writes_ == 0)
    sink()->RemoveStreamListener(&writable_listener_);

  if (is_in_deletion) return;

  // Delay the JS-facing part with SetImmediate, because this might be from
  // inside the garbage collector, so we can’t run JS here.
  HandleScope handle_scope(env()->isolate());
  BaseObjectPtr<StreamPipe> strong_ref{this};
  env()->SetImmediate([this, strong_ref](Environment* env) {
    HandleScope handle_scope(env->isolate());
    Context::Scope context_scope(env->context());
    Local<Object> object = this->object();

    Local<Value> onunpipe;
    if (!object->Get(env->context(), env->onunpipe_string()).ToLocal(&onunpipe))
      return;
    if (onunpipe->IsFunction() &&
        MakeCallback(onunpipe.As<Function>(), 0, nullptr).IsEmpty()) {
      return;
    }

    // Set all the links established in the constructor to `null`.
    Local<Value> null = Null(env->isolate());

    Local<Value> source_v;
    Local<Value> sink_v;
    if (!object->Get(env->context(), env->source_string()).ToLocal(&source_v) ||
        !object->Get(env->context(), env->sink_string()).ToLocal(&sink_v) ||
        !source_v->IsObject() || !sink_v->IsObject()) {
      return;
    }

    if (object->Set(env->context(), env->source_string(), null).IsNothing() ||
        object->Set(env->context(), env->sink_string(), null).IsNothing() ||
        source_v.As<Object>()
            ->Set(env->context(), env->pipe_target_string(), null)
            .IsNothing() ||
        sink_v.As<Object>()
            ->Set(env->context(), env->pipe_source_string(), null)
            .IsNothing()) {
      return;
    }
  });
}

uv_buf_t StreamPipe::ReadableListener::OnStreamAlloc(size_t suggested_size) {
  StreamPipe* pipe = ContainerOf(&StreamPipe::readable_listener_, this);
  size_t size = std::min(suggested_size, pipe->wanted_data_);
  CHECK_GT(size, 0);
  return pipe->env()->allocate_managed_buffer(size);
}

void StreamPipe::ReadableListener::OnStreamRead(ssize_t nread,
                                                const uv_buf_t& buf_) {
  StreamPipe* pipe = ContainerOf(&StreamPipe::readable_listener_, this);
  std::unique_ptr<BackingStore> bs = pipe->env()->release_managed_buffer(buf_);
  if (nread < 0) {
    // EOF or error; stop reading and pass the error to the previous listener
    // (which might end up in JS).
    pipe->is_eof_ = true;
    // Cache `sink()` here because the previous listener might do things
    // that eventually lead to an `Unpipe()` call.
    StreamBase* sink = pipe->sink();
    stream()->ReadStop();
    CHECK_NOT_NULL(previous_listener_);
    previous_listener_->OnStreamRead(nread, uv_buf_init(nullptr, 0));
    // If we’re not writing, close now. Otherwise, we’ll do that in
    // `OnStreamAfterWrite()`.
    if (pipe->pending_writes_ == 0) {
      sink->Shutdown();
      pipe->Unpipe();
    }
    return;
  }

  pipe->ProcessData(nread, std::move(bs));
}

void StreamPipe::ProcessData(size_t nread,
                             std::unique_ptr<BackingStore> bs) {
  CHECK(uses_wants_write_ || pending_writes_ == 0);
  uv_buf_t buffer = uv_buf_init(static_cast<char*>(bs->Data()), nread);
  StreamWriteResult res = sink()->Write(&buffer, 1);
  pending_writes_++;
  if (!res.async) {
    writable_listener_.OnStreamAfterWrite(nullptr, res.err);
  } else {
    is_reading_ = false;
    res.wrap->SetBackingStore(std::move(bs));
    if (source() != nullptr)
      source()->ReadStop();
  }
}

void StreamPipe::WritableListener::OnStreamAfterWrite(WriteWrap* w,
                                                      int status) {
  StreamPipe* pipe = ContainerOf(&StreamPipe::writable_listener_, this);
  pipe->pending_writes_--;
  if (pipe->is_closed_) {
    if (pipe->pending_writes_ == 0) {
      Environment* env = pipe->env();
      HandleScope handle_scope(env->isolate());
      Context::Scope context_scope(env->context());
      if (pipe->MakeCallback(env->oncomplete_string(), 0, nullptr).IsEmpty())
        return;
      stream()->RemoveStreamListener(this);
    }
    return;
  }

  if (pipe->is_eof_) {
    HandleScope handle_scope(pipe->env()->isolate());
    InternalCallbackScope callback_scope(pipe,
        InternalCallbackScope::kSkipTaskQueues);
    pipe->sink()->Shutdown();
    pipe->Unpipe();
    return;
  }

  if (status != 0) {
    CHECK_NOT_NULL(previous_listener_);
    StreamListener* prev = previous_listener_;
    pipe->Unpipe();
    prev->OnStreamAfterWrite(w, status);
    return;
  }

  if (!pipe->uses_wants_write_) {
    OnStreamWantsWrite(65536);
  }
}

void StreamPipe::WritableListener::OnStreamAfterShutdown(ShutdownWrap* w,
                                                         int status) {
  StreamPipe* pipe = ContainerOf(&StreamPipe::writable_listener_, this);
  CHECK_NOT_NULL(previous_listener_);
  StreamListener* prev = previous_listener_;
  pipe->Unpipe();
  prev->OnStreamAfterShutdown(w, status);
}

void StreamPipe::ReadableListener::OnStreamDestroy() {
  StreamPipe* pipe = ContainerOf(&StreamPipe::readable_listener_, this);
  pipe->source_destroyed_ = true;
  if (!pipe->is_eof_) {
    OnStreamRead(UV_EPIPE, uv_buf_init(nullptr, 0));
  }
}

void StreamPipe::WritableListener::OnStreamDestroy() {
  StreamPipe* pipe = ContainerOf(&StreamPipe::writable_listener_, this);
  pipe->sink_destroyed_ = true;
  pipe->is_eof_ = true;
  pipe->pending_writes_ = 0;
  pipe->Unpipe();
}

void StreamPipe::WritableListener::OnStreamWantsWrite(size_t suggested_size) {
  StreamPipe* pipe = ContainerOf(&StreamPipe::writable_listener_, this);
  pipe->wanted_data_ = suggested_size;
  if (pipe->is_reading_ || pipe->is_closed_)
    return;
  HandleScope handle_scope(pipe->env()->isolate());
  InternalCallbackScope callback_scope(pipe,
      InternalCallbackScope::kSkipTaskQueues);
  pipe->is_reading_ = true;
  pipe->source()->ReadStart();
}

uv_buf_t StreamPipe::WritableListener::OnStreamAlloc(size_t suggested_size) {
  CHECK_NOT_NULL(previous_listener_);
  return previous_listener_->OnStreamAlloc(suggested_size);
}

void StreamPipe::WritableListener::OnStreamRead(ssize_t nread,
                                                const uv_buf_t& buf) {
  CHECK_NOT_NULL(previous_listener_);
  return previous_listener_->OnStreamRead(nread, buf);
}

Maybe<StreamPipe*> StreamPipe::New(StreamBase* source,
                                   StreamBase* sink,
                                   Local<Object> obj) {
  std::unique_ptr<StreamPipe> stream_pipe(new StreamPipe(source, sink, obj));

  // Set up links between this object and the source/sink objects.
  // In particular, this makes sure that they are garbage collected as a group,
  // if that applies to the given streams (for example, Http2Streams use
  // weak references).
  Environment* env = source->stream_env();
  if (obj->Set(env->context(), env->source_string(), source->GetObject())
          .IsNothing()) {
    return Nothing<StreamPipe*>();
  }
  if (source->GetObject()
          ->Set(env->context(), env->pipe_target_string(), obj)
          .IsNothing()) {
    return Nothing<StreamPipe*>();
  }
  if (obj->Set(env->context(), env->sink_string(), sink->GetObject())
          .IsNothing()) {
    return Nothing<StreamPipe*>();
  }
  if (sink->GetObject()
          ->Set(env->context(), env->pipe_source_string(), obj)
          .IsNothing()) {
    return Nothing<StreamPipe*>();
  }

  return Just(stream_pipe.release());
}

void StreamPipe::New(const FunctionCallbackInfo<Value>& args) {
  CHECK(args.IsConstructCall());
  CHECK(args[0]->IsObject());
  CHECK(args[1]->IsObject());
  StreamBase* source = StreamBase::FromObject(args[0].As<Object>());
  StreamBase* sink = StreamBase::FromObject(args[1].As<Object>());

  if (StreamPipe::New(source, sink, args.This()).IsNothing()) return;
}

void StreamPipe::Start(const FunctionCallbackInfo<Value>& args) {
  StreamPipe* pipe;
  ASSIGN_OR_RETURN_UNWRAP(&pipe, args.Holder());
  pipe->is_closed_ = false;
  pipe->writable_listener_.OnStreamWantsWrite(65536);
}

void StreamPipe::Unpipe(const FunctionCallbackInfo<Value>& args) {
  StreamPipe* pipe;
  ASSIGN_OR_RETURN_UNWRAP(&pipe, args.Holder());
  pipe->Unpipe();
}

void StreamPipe::IsClosed(const FunctionCallbackInfo<Value>& args) {
  StreamPipe* pipe;
  ASSIGN_OR_RETURN_UNWRAP(&pipe, args.Holder());
  args.GetReturnValue().Set(pipe->is_closed_);
}

void StreamPipe::PendingWrites(const FunctionCallbackInfo<Value>& args) {
  StreamPipe* pipe;
  ASSIGN_OR_RETURN_UNWRAP(&pipe, args.Holder());
  args.GetReturnValue().Set(pipe->pending_writes_);
}

namespace {

void InitializeStreamPipe(Local<Object> target,
                          Local<Value> unused,
                          Local<Context> context,
                          void* priv) {
  Environment* env = Environment::GetCurrent(context);

  // Create FunctionTemplate for FileHandle::CloseReq
  Local<FunctionTemplate> pipe = env->NewFunctionTemplate(StreamPipe::New);
  env->SetProtoMethod(pipe, "unpipe", StreamPipe::Unpipe);
  env->SetProtoMethod(pipe, "start", StreamPipe::Start);
  env->SetProtoMethod(pipe, "isClosed", StreamPipe::IsClosed);
  env->SetProtoMethod(pipe, "pendingWrites", StreamPipe::PendingWrites);
  pipe->Inherit(AsyncWrap::GetConstructorTemplate(env));
  pipe->InstanceTemplate()->SetInternalFieldCount(
      StreamPipe::kInternalFieldCount);
  env->SetConstructorFunction(target, "StreamPipe", pipe);
}

}  // anonymous namespace

}  // namespace node

NODE_MODULE_CONTEXT_AWARE_INTERNAL(stream_pipe,
                                   node::InitializeStreamPipe)


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			#include "stream_pipe.h"
2			#include "stream_base-inl.h"
3			#include "node_buffer.h"
4			#include "util-inl.h"
5
6			namespace node {
7
8			using v8::BackingStore;
9			using v8::Context;
10			using v8::Function;
11			using v8::FunctionCallbackInfo;
12			using v8::FunctionTemplate;
13			using v8::HandleScope;
14			using v8::Just;
15			using v8::Local;
16			using v8::Maybe;
17			using v8::Nothing;
18			using v8::Object;
19			using v8::Value;
20
21		15	StreamPipe::StreamPipe(StreamBase* source,
22			StreamBase* sink,
23		15	Local<Object> obj)
24		15	: AsyncWrap(source->stream_env(), obj, AsyncWrap::PROVIDER_STREAMPIPE) {
25		15	MakeWeak();
26
27	✗✓	15	CHECK_NOT_NULL(sink);
28	✗✓	15	CHECK_NOT_NULL(source);
29
30		15	source->PushStreamListener(&readable_listener_);
31		15	sink->PushStreamListener(&writable_listener_);
32
33		15	uses_wants_write_ = sink->HasWantsWrite();
34		15	}
35
36		60	StreamPipe::~StreamPipe() {
37		30	Unpipe(true);
38		60	}
39
40		640	StreamBase* StreamPipe::source() {
41		640	return static_cast<StreamBase*>(readable_listener_.stream());
42			}
43
44		231	StreamBase* StreamPipe::sink() {
45		231	return static_cast<StreamBase*>(writable_listener_.stream());
46			}
47
48		29	void StreamPipe::Unpipe(bool is_in_deletion) {
49	✓✓	29	if (is_closed_)
50		15	return;
51
52			// Note that we possibly cannot use virtual methods on `source` and `sink`
53			// here, because this function can be called from their destructors via
54			// `OnStreamDestroy()`.
55	✓✗	15	if (!source_destroyed_)
56		15	source()->ReadStop();
57
58		15	is_closed_ = true;
59		15	is_reading_ = false;
60		15	source()->RemoveStreamListener(&readable_listener_);
61	✓✓	15	if (pending_writes_ == 0)
62		14	sink()->RemoveStreamListener(&writable_listener_);
63
64	✓✓	15	if (is_in_deletion) return;
65
66			// Delay the JS-facing part with SetImmediate, because this might be from
67			// inside the garbage collector, so we can’t run JS here.
68		28	HandleScope handle_scope(env()->isolate());
69		14	BaseObjectPtr<StreamPipe> strong_ref{this};
70		14	env()->SetImmediate([this, strong_ref](Environment* env) {
71		14	HandleScope handle_scope(env->isolate());
72		14	Context::Scope context_scope(env->context());
73		14	Local<Object> object = this->object();
74
75			Local<Value> onunpipe;
76	✗✓	42	if (!object->Get(env->context(), env->onunpipe_string()).ToLocal(&onunpipe))
77			return;
78	✓✗	28	if (onunpipe->IsFunction() &&
79	✗✓✗✓	56	MakeCallback(onunpipe.As<Function>(), 0, nullptr).IsEmpty()) {
80			return;
81			}
82
83			// Set all the links established in the constructor to `null`.
84		28	Local<Value> null = Null(env->isolate());
85
86			Local<Value> source_v;
87			Local<Value> sink_v;
88		28	if (!object->Get(env->context(), env->source_string()).ToLocal(&source_v) \|\|
89	✓✗	42	!object->Get(env->context(), env->sink_string()).ToLocal(&sink_v) \|\|
90	✓✗✓✗ ✗✓✗✓	42	!source_v->IsObject() \|\| !sink_v->IsObject()) {
91			return;
92			}
93
94		28	if (object->Set(env->context(), env->source_string(), null).IsNothing() \|\|
95	✓✗	42	object->Set(env->context(), env->sink_string(), null).IsNothing() \|\|
96		14	source_v.As<Object>()
97		28	->Set(env->context(), env->pipe_target_string(), null)
98	✓✗✓✗	42	.IsNothing() \|\|
99		14	sink_v.As<Object>()
100	✗✓	42	->Set(env->context(), env->pipe_source_string(), null)
101	✗✓	14	.IsNothing()) {
102			return;
103			}
104			});
105			}
106
107		207	uv_buf_t StreamPipe::ReadableListener::OnStreamAlloc(size_t suggested_size) {
108		207	StreamPipe* pipe = ContainerOf(&StreamPipe::readable_listener_, this);
109		207	size_t size = std::min(suggested_size, pipe->wanted_data_);
110	✗✓	207	CHECK_GT(size, 0);
111		207	return pipe->env()->allocate_managed_buffer(size);
112			}
113
114		212	void StreamPipe::ReadableListener::OnStreamRead(ssize_t nread,
115			const uv_buf_t& buf_) {
116		212	StreamPipe* pipe = ContainerOf(&StreamPipe::readable_listener_, this);
117		212	std::unique_ptr<BackingStore> bs = pipe->env()->release_managed_buffer(buf_);
118	✓✓	212	if (nread < 0) {
119			// EOF or error; stop reading and pass the error to the previous listener
120			// (which might end up in JS).
121		13	pipe->is_eof_ = true;
122			// Cache `sink()` here because the previous listener might do things
123			// that eventually lead to an `Unpipe()` call.
124		13	StreamBase* sink = pipe->sink();
125		13	stream()->ReadStop();
126	✗✓	13	CHECK_NOT_NULL(previous_listener_);
127		13	previous_listener_->OnStreamRead(nread, uv_buf_init(nullptr, 0));
128			// If we’re not writing, close now. Otherwise, we’ll do that in
129			// `OnStreamAfterWrite()`.
130	✓✓	13	if (pipe->pending_writes_ == 0) {
131		8	sink->Shutdown();
132		8	pipe->Unpipe();
133			}
134		13	return;
135			}
136
137		199	pipe->ProcessData(nread, std::move(bs));
138			}
139
140		199	void StreamPipe::ProcessData(size_t nread,
141			std::unique_ptr<BackingStore> bs) {
142	✗✓✗✗	199	CHECK(uses_wants_write_ \|\| pending_writes_ == 0);
143		199	uv_buf_t buffer = uv_buf_init(static_cast<char*>(bs->Data()), nread);
144		398	StreamWriteResult res = sink()->Write(&buffer, 1);
145		199	pending_writes_++;
146	✗✓	199	if (!res.async) {
147			writable_listener_.OnStreamAfterWrite(nullptr, res.err);
148			} else {
149		199	is_reading_ = false;
150		199	res.wrap->SetBackingStore(std::move(bs));
151	✓✗	199	if (source() != nullptr)
152		199	source()->ReadStop();
153			}
154		199	}
155
156		198	void StreamPipe::WritableListener::OnStreamAfterWrite(WriteWrap* w,
157			int status) {
158		198	StreamPipe* pipe = ContainerOf(&StreamPipe::writable_listener_, this);
159		198	pipe->pending_writes_--;
160	✗✓	198	if (pipe->is_closed_) {
161			if (pipe->pending_writes_ == 0) {
162			Environment* env = pipe->env();
163			HandleScope handle_scope(env->isolate());
164			Context::Scope context_scope(env->context());
165			if (pipe->MakeCallback(env->oncomplete_string(), 0, nullptr).IsEmpty())
166			return;
167			stream()->RemoveStreamListener(this);
168			}
169			return;
170			}
171
172	✓✓	198	if (pipe->is_eof_) {
173		10	HandleScope handle_scope(pipe->env()->isolate());
174			InternalCallbackScope callback_scope(pipe,
175		5	InternalCallbackScope::kSkipTaskQueues);
176		5	pipe->sink()->Shutdown();
177		5	pipe->Unpipe();
178		5	return;
179			}
180
181	✓✓	193	if (status != 0) {
182	✗✓	1	CHECK_NOT_NULL(previous_listener_);
183		1	StreamListener* prev = previous_listener_;
184		1	pipe->Unpipe();
185		1	prev->OnStreamAfterWrite(w, status);
186		1	return;
187			}
188
189	✗✓	192	if (!pipe->uses_wants_write_) {
190			OnStreamWantsWrite(65536);
191			}
192			}
193
194			void StreamPipe::WritableListener::OnStreamAfterShutdown(ShutdownWrap* w,
195			int status) {
196			StreamPipe* pipe = ContainerOf(&StreamPipe::writable_listener_, this);
197			CHECK_NOT_NULL(previous_listener_);
198			StreamListener* prev = previous_listener_;
199			pipe->Unpipe();
200			prev->OnStreamAfterShutdown(w, status);
201			}
202
203			void StreamPipe::ReadableListener::OnStreamDestroy() {
204			StreamPipe* pipe = ContainerOf(&StreamPipe::readable_listener_, this);
205			pipe->source_destroyed_ = true;
206			if (!pipe->is_eof_) {
207			OnStreamRead(UV_EPIPE, uv_buf_init(nullptr, 0));
208			}
209			}
210
211			void StreamPipe::WritableListener::OnStreamDestroy() {
212			StreamPipe* pipe = ContainerOf(&StreamPipe::writable_listener_, this);
213			pipe->sink_destroyed_ = true;
214			pipe->is_eof_ = true;
215			pipe->pending_writes_ = 0;
216			pipe->Unpipe();
217			}
218
219		227	void StreamPipe::WritableListener::OnStreamWantsWrite(size_t suggested_size) {
220		227	StreamPipe* pipe = ContainerOf(&StreamPipe::writable_listener_, this);
221		227	pipe->wanted_data_ = suggested_size;
222	✓✓✗✓	227	if (pipe->is_reading_ \|\| pipe->is_closed_)
223		15	return;
224		424	HandleScope handle_scope(pipe->env()->isolate());
225			InternalCallbackScope callback_scope(pipe,
226		424	InternalCallbackScope::kSkipTaskQueues);
227		212	pipe->is_reading_ = true;
228		212	pipe->source()->ReadStart();
229			}
230
231			uv_buf_t StreamPipe::WritableListener::OnStreamAlloc(size_t suggested_size) {
232			CHECK_NOT_NULL(previous_listener_);
233			return previous_listener_->OnStreamAlloc(suggested_size);
234			}
235
236			void StreamPipe::WritableListener::OnStreamRead(ssize_t nread,
237			const uv_buf_t& buf) {
238			CHECK_NOT_NULL(previous_listener_);
239			return previous_listener_->OnStreamRead(nread, buf);
240			}
241
242		15	Maybe<StreamPipe> StreamPipe::New(StreamBase source,
243			StreamBase* sink,
244			Local<Object> obj) {
245		30	std::unique_ptr<StreamPipe> stream_pipe(new StreamPipe(source, sink, obj));
246
247			// Set up links between this object and the source/sink objects.
248			// In particular, this makes sure that they are garbage collected as a group,
249			// if that applies to the given streams (for example, Http2Streams use
250			// weak references).
251		15	Environment* env = source->stream_env();
252		45	if (obj->Set(env->context(), env->source_string(), source->GetObject())
253	✗✓	15	.IsNothing()) {
254			return Nothing<StreamPipe*>();
255			}
256		15	if (source->GetObject()
257		30	->Set(env->context(), env->pipe_target_string(), obj)
258	✗✓	15	.IsNothing()) {
259			return Nothing<StreamPipe*>();
260			}
261		45	if (obj->Set(env->context(), env->sink_string(), sink->GetObject())
262	✗✓	15	.IsNothing()) {
263			return Nothing<StreamPipe*>();
264			}
265		15	if (sink->GetObject()
266		30	->Set(env->context(), env->pipe_source_string(), obj)
267	✗✓	15	.IsNothing()) {
268			return Nothing<StreamPipe*>();
269			}
270
271		15	return Just(stream_pipe.release());
272			}
273
274		15	void StreamPipe::New(const FunctionCallbackInfo<Value>& args) {
275	✗✓	15	CHECK(args.IsConstructCall());
276	✗✓	15	CHECK(args[0]->IsObject());
277	✗✓	15	CHECK(args[1]->IsObject());
278	✓✗	30	StreamBase* source = StreamBase::FromObject(args[0].As<Object>());
279		30	StreamBase* sink = StreamBase::FromObject(args[1].As<Object>());
280
281	✗✓	30	if (StreamPipe::New(source, sink, args.This()).IsNothing()) return;
282			}
283
284		15	void StreamPipe::Start(const FunctionCallbackInfo<Value>& args) {
285			StreamPipe* pipe;
286	✗✓	15	ASSIGN_OR_RETURN_UNWRAP(&pipe, args.Holder());
287		15	pipe->is_closed_ = false;
288		15	pipe->writable_listener_.OnStreamWantsWrite(65536);
289			}
290
291			void StreamPipe::Unpipe(const FunctionCallbackInfo<Value>& args) {
292			StreamPipe* pipe;
293			ASSIGN_OR_RETURN_UNWRAP(&pipe, args.Holder());
294			pipe->Unpipe();
295			}
296
297			void StreamPipe::IsClosed(const FunctionCallbackInfo<Value>& args) {
298			StreamPipe* pipe;
299			ASSIGN_OR_RETURN_UNWRAP(&pipe, args.Holder());
300			args.GetReturnValue().Set(pipe->is_closed_);
301			}
302
303			void StreamPipe::PendingWrites(const FunctionCallbackInfo<Value>& args) {
304			StreamPipe* pipe;
305			ASSIGN_OR_RETURN_UNWRAP(&pipe, args.Holder());
306			args.GetReturnValue().Set(pipe->pending_writes_);
307			}
308
309			namespace {
310
311		463	void InitializeStreamPipe(Local<Object> target,
312			Local<Value> unused,
313			Local<Context> context,
314			void* priv) {
315		463	Environment* env = Environment::GetCurrent(context);
316
317			// Create FunctionTemplate for FileHandle::CloseReq
318		463	Local<FunctionTemplate> pipe = env->NewFunctionTemplate(StreamPipe::New);
319		463	env->SetProtoMethod(pipe, "unpipe", StreamPipe::Unpipe);
320		463	env->SetProtoMethod(pipe, "start", StreamPipe::Start);
321		463	env->SetProtoMethod(pipe, "isClosed", StreamPipe::IsClosed);
322		463	env->SetProtoMethod(pipe, "pendingWrites", StreamPipe::PendingWrites);
323		463	pipe->Inherit(AsyncWrap::GetConstructorTemplate(env));
324		926	pipe->InstanceTemplate()->SetInternalFieldCount(
325			StreamPipe::kInternalFieldCount);
326		463	env->SetConstructorFunction(target, "StreamPipe", pipe);
327		463	}
328
329			} // anonymous namespace
330
331			} // namespace node
332
333		5274	NODE_MODULE_CONTEXT_AWARE_INTERNAL(stream_pipe,
334			node::InitializeStreamPipe)