Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	stream_wrap.cc	Lines:	169	175	96.6 %
Date:	2022-06-20 04:16:14	Branches:	50	74	67.6 %


// 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 "stream_wrap.h"
#include "stream_base-inl.h"

#include "env-inl.h"
#include "handle_wrap.h"
#include "node_buffer.h"
#include "node_external_reference.h"
#include "pipe_wrap.h"
#include "req_wrap-inl.h"
#include "tcp_wrap.h"
#include "udp_wrap.h"
#include "util-inl.h"

#include <cstring>  // memcpy()
#include <climits>  // INT_MAX


namespace node {

using v8::Context;
using v8::DontDelete;
using v8::EscapableHandleScope;
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::HandleScope;
using v8::Local;
using v8::MaybeLocal;
using v8::Object;
using v8::PropertyAttribute;
using v8::ReadOnly;
using v8::Signature;
using v8::Value;

void IsConstructCallCallback(const FunctionCallbackInfo<Value>& args) {
  CHECK(args.IsConstructCall());
  StreamReq::ResetObject(args.This());
}

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

  Local<FunctionTemplate> sw =
      FunctionTemplate::New(env->isolate(), IsConstructCallCallback);
  sw->InstanceTemplate()->SetInternalFieldCount(StreamReq::kInternalFieldCount);

  // we need to set handle and callback to null,
  // so that those fields are created and functions
  // do not become megamorphic
  // Fields:
  // - oncomplete
  // - callback
  // - handle
  sw->InstanceTemplate()->Set(
      env->oncomplete_string(),
      v8::Null(env->isolate()));
  sw->InstanceTemplate()->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "callback"),
      v8::Null(env->isolate()));
  sw->InstanceTemplate()->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "handle"),
      v8::Null(env->isolate()));

  sw->Inherit(AsyncWrap::GetConstructorTemplate(env));

  env->SetConstructorFunction(target, "ShutdownWrap", sw);
  env->set_shutdown_wrap_template(sw->InstanceTemplate());

  Local<FunctionTemplate> ww =
      FunctionTemplate::New(env->isolate(), IsConstructCallCallback);
  ww->InstanceTemplate()->SetInternalFieldCount(
      StreamReq::kInternalFieldCount);
  ww->Inherit(AsyncWrap::GetConstructorTemplate(env));
  env->SetConstructorFunction(target, "WriteWrap", ww);
  env->set_write_wrap_template(ww->InstanceTemplate());

  NODE_DEFINE_CONSTANT(target, kReadBytesOrError);
  NODE_DEFINE_CONSTANT(target, kArrayBufferOffset);
  NODE_DEFINE_CONSTANT(target, kBytesWritten);
  NODE_DEFINE_CONSTANT(target, kLastWriteWasAsync);
  target->Set(context, FIXED_ONE_BYTE_STRING(env->isolate(), "streamBaseState"),
              env->stream_base_state().GetJSArray()).Check();
}

void LibuvStreamWrap::RegisterExternalReferences(
    ExternalReferenceRegistry* registry) {
  registry->Register(IsConstructCallCallback);
  registry->Register(GetWriteQueueSize);
  registry->Register(SetBlocking);
  StreamBase::RegisterExternalReferences(registry);
}

LibuvStreamWrap::LibuvStreamWrap(Environment* env,
                                 Local<Object> object,
                                 uv_stream_t* stream,
                                 AsyncWrap::ProviderType provider)
    : HandleWrap(env,
                 object,
                 reinterpret_cast<uv_handle_t*>(stream),
                 provider),
      StreamBase(env),
      stream_(stream) {
  StreamBase::AttachToObject(object);
}


Local<FunctionTemplate> LibuvStreamWrap::GetConstructorTemplate(
    Environment* env) {
  Local<FunctionTemplate> tmpl = env->libuv_stream_wrap_ctor_template();
  if (tmpl.IsEmpty()) {
    tmpl = env->NewFunctionTemplate(nullptr);
    tmpl->SetClassName(
        FIXED_ONE_BYTE_STRING(env->isolate(), "LibuvStreamWrap"));
    tmpl->Inherit(HandleWrap::GetConstructorTemplate(env));
    tmpl->InstanceTemplate()->SetInternalFieldCount(
        StreamBase::kInternalFieldCount);
    Local<FunctionTemplate> get_write_queue_size =
        FunctionTemplate::New(env->isolate(),
                              GetWriteQueueSize,
                              Local<Value>(),
                              Signature::New(env->isolate(), tmpl));
    tmpl->PrototypeTemplate()->SetAccessorProperty(
        env->write_queue_size_string(),
        get_write_queue_size,
        Local<FunctionTemplate>(),
        static_cast<PropertyAttribute>(ReadOnly | DontDelete));
    env->SetProtoMethod(tmpl, "setBlocking", SetBlocking);
    StreamBase::AddMethods(env, tmpl);
    env->set_libuv_stream_wrap_ctor_template(tmpl);
  }
  return tmpl;
}


LibuvStreamWrap* LibuvStreamWrap::From(Environment* env, Local<Object> object) {
  Local<FunctionTemplate> sw = env->libuv_stream_wrap_ctor_template();
  CHECK(!sw.IsEmpty() && sw->HasInstance(object));
  return Unwrap<LibuvStreamWrap>(object);
}


int LibuvStreamWrap::GetFD() {
#ifdef _WIN32
  return fd_;
#else
  int fd = -1;
  if (stream() != nullptr)
    uv_fileno(reinterpret_cast<uv_handle_t*>(stream()), &fd);
  return fd;
#endif
}


bool LibuvStreamWrap::IsAlive() {
  return HandleWrap::IsAlive(this);
}


bool LibuvStreamWrap::IsClosing() {
  return uv_is_closing(reinterpret_cast<uv_handle_t*>(stream()));
}


AsyncWrap* LibuvStreamWrap::GetAsyncWrap() {
  return static_cast<AsyncWrap*>(this);
}


bool LibuvStreamWrap::IsIPCPipe() {
  return is_named_pipe_ipc();
}


int LibuvStreamWrap::ReadStart() {
  return uv_read_start(stream(), [](uv_handle_t* handle,
                                    size_t suggested_size,
                                    uv_buf_t* buf) {
    static_cast<LibuvStreamWrap*>(handle->data)->OnUvAlloc(suggested_size, buf);
  }, [](uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf) {
    static_cast<LibuvStreamWrap*>(stream->data)->OnUvRead(nread, buf);
  });
}


int LibuvStreamWrap::ReadStop() {
  return uv_read_stop(stream());
}


void LibuvStreamWrap::OnUvAlloc(size_t suggested_size, uv_buf_t* buf) {
  HandleScope scope(env()->isolate());
  Context::Scope context_scope(env()->context());

  *buf = EmitAlloc(suggested_size);
}

template <class WrapType>
static MaybeLocal<Object> AcceptHandle(Environment* env,
                                       LibuvStreamWrap* parent) {
  static_assert(std::is_base_of<LibuvStreamWrap, WrapType>::value ||
                std::is_base_of<UDPWrap, WrapType>::value,
                "Can only accept stream handles");

  EscapableHandleScope scope(env->isolate());
  Local<Object> wrap_obj;

  if (!WrapType::Instantiate(env, parent, WrapType::SOCKET).ToLocal(&wrap_obj))
    return Local<Object>();

  HandleWrap* wrap = Unwrap<HandleWrap>(wrap_obj);
  CHECK_NOT_NULL(wrap);
  uv_stream_t* stream = reinterpret_cast<uv_stream_t*>(wrap->GetHandle());
  CHECK_NOT_NULL(stream);

  if (uv_accept(parent->stream(), stream))
    ABORT();

  return scope.Escape(wrap_obj);
}


void LibuvStreamWrap::OnUvRead(ssize_t nread, const uv_buf_t* buf) {
  HandleScope scope(env()->isolate());
  Context::Scope context_scope(env()->context());
  uv_handle_type type = UV_UNKNOWN_HANDLE;

  if (is_named_pipe_ipc() &&
      uv_pipe_pending_count(reinterpret_cast<uv_pipe_t*>(stream())) > 0) {
    type = uv_pipe_pending_type(reinterpret_cast<uv_pipe_t*>(stream()));
  }

  // We should not be getting this callback if someone has already called
  // uv_close() on the handle.
  CHECK_EQ(persistent().IsEmpty(), false);

  if (nread > 0) {
    MaybeLocal<Object> pending_obj;

    if (type == UV_TCP) {
      pending_obj = AcceptHandle<TCPWrap>(env(), this);
    } else if (type == UV_NAMED_PIPE) {
      pending_obj = AcceptHandle<PipeWrap>(env(), this);
    } else if (type == UV_UDP) {
      pending_obj = AcceptHandle<UDPWrap>(env(), this);
    } else {
      CHECK_EQ(type, UV_UNKNOWN_HANDLE);
    }

    Local<Object> local_pending_obj;
    if (pending_obj.ToLocal(&local_pending_obj) &&
          object()->Set(env()->context(),
                        env()->pending_handle_string(),
                        local_pending_obj).IsNothing()) {
      return;
    }
  }

  EmitRead(nread, *buf);
}


void LibuvStreamWrap::GetWriteQueueSize(
    const FunctionCallbackInfo<Value>& info) {
  LibuvStreamWrap* wrap;
  ASSIGN_OR_RETURN_UNWRAP(&wrap, info.This());

  if (wrap->stream() == nullptr) {
    info.GetReturnValue().Set(0);
    return;
  }

  uint32_t write_queue_size = wrap->stream()->write_queue_size;
  info.GetReturnValue().Set(write_queue_size);
}


void LibuvStreamWrap::SetBlocking(const FunctionCallbackInfo<Value>& args) {
  LibuvStreamWrap* wrap;
  ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());

  CHECK_GT(args.Length(), 0);
  if (!wrap->IsAlive())
    return args.GetReturnValue().Set(UV_EINVAL);

  bool enable = args[0]->IsTrue();
  args.GetReturnValue().Set(uv_stream_set_blocking(wrap->stream(), enable));
}

typedef SimpleShutdownWrap<ReqWrap<uv_shutdown_t>> LibuvShutdownWrap;
typedef SimpleWriteWrap<ReqWrap<uv_write_t>> LibuvWriteWrap;

ShutdownWrap* LibuvStreamWrap::CreateShutdownWrap(Local<Object> object) {
  return new LibuvShutdownWrap(this, object);
}

WriteWrap* LibuvStreamWrap::CreateWriteWrap(Local<Object> object) {
  return new LibuvWriteWrap(this, object);
}


int LibuvStreamWrap::DoShutdown(ShutdownWrap* req_wrap_) {
  LibuvShutdownWrap* req_wrap = static_cast<LibuvShutdownWrap*>(req_wrap_);
  return req_wrap->Dispatch(uv_shutdown, stream(), AfterUvShutdown);
}


void LibuvStreamWrap::AfterUvShutdown(uv_shutdown_t* req, int status) {
  LibuvShutdownWrap* req_wrap = static_cast<LibuvShutdownWrap*>(
      LibuvShutdownWrap::from_req(req));
  CHECK_NOT_NULL(req_wrap);
  HandleScope scope(req_wrap->env()->isolate());
  Context::Scope context_scope(req_wrap->env()->context());
  req_wrap->Done(status);
}


// NOTE: Call to this function could change both `buf`'s and `count`'s
// values, shifting their base and decrementing their length. This is
// required in order to skip the data that was successfully written via
// uv_try_write().
int LibuvStreamWrap::DoTryWrite(uv_buf_t** bufs, size_t* count) {
  int err;
  size_t written;
  uv_buf_t* vbufs = *bufs;
  size_t vcount = *count;

  err = uv_try_write(stream(), vbufs, vcount);
  if (err == UV_ENOSYS || err == UV_EAGAIN)
    return 0;
  if (err < 0)
    return err;

  // Slice off the buffers: skip all written buffers and slice the one that
  // was partially written.
  written = err;
  for (; vcount > 0; vbufs++, vcount--) {
    // Slice
    if (vbufs[0].len > written) {
      vbufs[0].base += written;
      vbufs[0].len -= written;
      written = 0;
      break;

    // Discard
    } else {
      written -= vbufs[0].len;
    }
  }

  *bufs = vbufs;
  *count = vcount;

  return 0;
}


int LibuvStreamWrap::DoWrite(WriteWrap* req_wrap,
                             uv_buf_t* bufs,
                             size_t count,
                             uv_stream_t* send_handle) {
  LibuvWriteWrap* w = static_cast<LibuvWriteWrap*>(req_wrap);
  return w->Dispatch(uv_write2,
                     stream(),
                     bufs,
                     count,
                     send_handle,
                     AfterUvWrite);
}



void LibuvStreamWrap::AfterUvWrite(uv_write_t* req, int status) {
  LibuvWriteWrap* req_wrap = static_cast<LibuvWriteWrap*>(
      LibuvWriteWrap::from_req(req));
  CHECK_NOT_NULL(req_wrap);
  HandleScope scope(req_wrap->env()->isolate());
  Context::Scope context_scope(req_wrap->env()->context());
  req_wrap->Done(status);
}

}  // namespace node

NODE_MODULE_CONTEXT_AWARE_INTERNAL(stream_wrap,
                                   node::LibuvStreamWrap::Initialize)
NODE_MODULE_EXTERNAL_REFERENCE(
    stream_wrap, node::LibuvStreamWrap::RegisterExternalReferences)


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			// Copyright Joyent, Inc. and other Node contributors.
2			//
3			// Permission is hereby granted, free of charge, to any person obtaining a
4			// copy of this software and associated documentation files (the
5			// "Software"), to deal in the Software without restriction, including
6			// without limitation the rights to use, copy, modify, merge, publish,
7			// distribute, sublicense, and/or sell copies of the Software, and to permit
8			// persons to whom the Software is furnished to do so, subject to the
9			// following conditions:
10			//
11			// The above copyright notice and this permission notice shall be included
12			// in all copies or substantial portions of the Software.
13			//
14			// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15			// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16			// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
17			// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
18			// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19			// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20			// USE OR OTHER DEALINGS IN THE SOFTWARE.
21
22			#include "stream_wrap.h"
23			#include "stream_base-inl.h"
24
25			#include "env-inl.h"
26			#include "handle_wrap.h"
27			#include "node_buffer.h"
28			#include "node_external_reference.h"
29			#include "pipe_wrap.h"
30			#include "req_wrap-inl.h"
31			#include "tcp_wrap.h"
32			#include "udp_wrap.h"
33			#include "util-inl.h"
34
35			#include <cstring> // memcpy()
36			#include <climits> // INT_MAX
37
38
39			namespace node {
40
41			using v8::Context;
42			using v8::DontDelete;
43			using v8::EscapableHandleScope;
44			using v8::FunctionCallbackInfo;
45			using v8::FunctionTemplate;
46			using v8::HandleScope;
47			using v8::Local;
48			using v8::MaybeLocal;
49			using v8::Object;
50			using v8::PropertyAttribute;
51			using v8::ReadOnly;
52			using v8::Signature;
53			using v8::Value;
54
55		125041	void IsConstructCallCallback(const FunctionCallbackInfo<Value>& args) {
56	✗✓	125041	CHECK(args.IsConstructCall());
57		125041	StreamReq::ResetObject(args.This());
58		125041	}
59
60		1269	void LibuvStreamWrap::Initialize(Local<Object> target,
61			Local<Value> unused,
62			Local<Context> context,
63			void* priv) {
64		1269	Environment* env = Environment::GetCurrent(context);
65
66			Local<FunctionTemplate> sw =
67		1269	FunctionTemplate::New(env->isolate(), IsConstructCallCallback);
68		2538	sw->InstanceTemplate()->SetInternalFieldCount(StreamReq::kInternalFieldCount);
69
70			// we need to set handle and callback to null,
71			// so that those fields are created and functions
72			// do not become megamorphic
73			// Fields:
74			// - oncomplete
75			// - callback
76			// - handle
77		5076	sw->InstanceTemplate()->Set(
78			env->oncomplete_string(),
79			v8::Null(env->isolate()));
80		5076	sw->InstanceTemplate()->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "callback"),
81			v8::Null(env->isolate()));
82		5076	sw->InstanceTemplate()->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "handle"),
83			v8::Null(env->isolate()));
84
85		1269	sw->Inherit(AsyncWrap::GetConstructorTemplate(env));
86
87		1269	env->SetConstructorFunction(target, "ShutdownWrap", sw);
88		1269	env->set_shutdown_wrap_template(sw->InstanceTemplate());
89
90			Local<FunctionTemplate> ww =
91		1269	FunctionTemplate::New(env->isolate(), IsConstructCallCallback);
92		2538	ww->InstanceTemplate()->SetInternalFieldCount(
93			StreamReq::kInternalFieldCount);
94		1269	ww->Inherit(AsyncWrap::GetConstructorTemplate(env));
95		1269	env->SetConstructorFunction(target, "WriteWrap", ww);
96		1269	env->set_write_wrap_template(ww->InstanceTemplate());
97
98		3807	NODE_DEFINE_CONSTANT(target, kReadBytesOrError);
99		3807	NODE_DEFINE_CONSTANT(target, kArrayBufferOffset);
100		3807	NODE_DEFINE_CONSTANT(target, kBytesWritten);
101		3807	NODE_DEFINE_CONSTANT(target, kLastWriteWasAsync);
102		1269	target->Set(context, FIXED_ONE_BYTE_STRING(env->isolate(), "streamBaseState"),
103		3807	env->stream_base_state().GetJSArray()).Check();
104		1269	}
105
106		5213	void LibuvStreamWrap::RegisterExternalReferences(
107			ExternalReferenceRegistry* registry) {
108		5213	registry->Register(IsConstructCallCallback);
109		5213	registry->Register(GetWriteQueueSize);
110		5213	registry->Register(SetBlocking);
111		5213	StreamBase::RegisterExternalReferences(registry);
112		5213	}
113
114		18936	LibuvStreamWrap::LibuvStreamWrap(Environment* env,
115			Local<Object> object,
116			uv_stream_t* stream,
117		18936	AsyncWrap::ProviderType provider)
118			: HandleWrap(env,
119			object,
120			reinterpret_cast<uv_handle_t*>(stream),
121			provider),
122			StreamBase(env),
123		18936	stream_(stream) {
124		18936	StreamBase::AttachToObject(object);
125		18936	}
126
127
128		18060	Local<FunctionTemplate> LibuvStreamWrap::GetConstructorTemplate(
129			Environment* env) {
130		18060	Local<FunctionTemplate> tmpl = env->libuv_stream_wrap_ctor_template();
131	✓✓	18060	if (tmpl.IsEmpty()) {
132		6441	tmpl = env->NewFunctionTemplate(nullptr);
133		6441	tmpl->SetClassName(
134			FIXED_ONE_BYTE_STRING(env->isolate(), "LibuvStreamWrap"));
135		6441	tmpl->Inherit(HandleWrap::GetConstructorTemplate(env));
136		12882	tmpl->InstanceTemplate()->SetInternalFieldCount(
137			StreamBase::kInternalFieldCount);
138			Local<FunctionTemplate> get_write_queue_size =
139			FunctionTemplate::New(env->isolate(),
140			GetWriteQueueSize,
141			Local<Value>(),
142		6441	Signature::New(env->isolate(), tmpl));
143		25764	tmpl->PrototypeTemplate()->SetAccessorProperty(
144			env->write_queue_size_string(),
145			get_write_queue_size,
146			Local<FunctionTemplate>(),
147			static_cast<PropertyAttribute>(ReadOnly \| DontDelete));
148		6441	env->SetProtoMethod(tmpl, "setBlocking", SetBlocking);
149		6441	StreamBase::AddMethods(env, tmpl);
150		6441	env->set_libuv_stream_wrap_ctor_template(tmpl);
151			}
152		18060	return tmpl;
153			}
154
155
156		3924	LibuvStreamWrap* LibuvStreamWrap::From(Environment* env, Local<Object> object) {
157		3924	Local<FunctionTemplate> sw = env->libuv_stream_wrap_ctor_template();
158	✓✗✗✓ ✗✓	7848	CHECK(!sw.IsEmpty() && sw->HasInstance(object));
159		3924	return Unwrap<LibuvStreamWrap>(object);
160			}
161
162
163		120	int LibuvStreamWrap::GetFD() {
164			#ifdef _WIN32
165			return fd_;
166			#else
167		120	int fd = -1;
168	✓✗	120	if (stream() != nullptr)
169		120	uv_fileno(reinterpret_cast<uv_handle_t*>(stream()), &fd);
170		120	return fd;
171			#endif
172			}
173
174
175		123251	bool LibuvStreamWrap::IsAlive() {
176		123251	return HandleWrap::IsAlive(this);
177			}
178
179
180		3	bool LibuvStreamWrap::IsClosing() {
181		3	return uv_is_closing(reinterpret_cast<uv_handle_t*>(stream()));
182			}
183
184
185		171698	AsyncWrap* LibuvStreamWrap::GetAsyncWrap() {
186		171698	return static_cast<AsyncWrap*>(this);
187			}
188
189
190		27324	bool LibuvStreamWrap::IsIPCPipe() {
191		27324	return is_named_pipe_ipc();
192			}
193
194
195		21988	int LibuvStreamWrap::ReadStart() {
196		43976	return uv_read_start(stream(), [](uv_handle_t* handle,
197			size_t suggested_size,
198		73105	uv_buf_t* buf) {
199		73105	static_cast<LibuvStreamWrap*>(handle->data)->OnUvAlloc(suggested_size, buf);
200		146433	}, [](uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf) {
201		73328	static_cast<LibuvStreamWrap*>(stream->data)->OnUvRead(nread, buf);
202		21988	});
203			}
204
205
206		9190	int LibuvStreamWrap::ReadStop() {
207		9190	return uv_read_stop(stream());
208			}
209
210
211		73105	void LibuvStreamWrap::OnUvAlloc(size_t suggested_size, uv_buf_t* buf) {
212		146210	HandleScope scope(env()->isolate());
213		73105	Context::Scope context_scope(env()->context());
214
215		73105	*buf = EmitAlloc(suggested_size);
216		73105	}
217
218			template <class WrapType>
219		320	static MaybeLocal<Object> AcceptHandle(Environment* env,
220			LibuvStreamWrap* parent) {
221			static_assert(std::is_base_of<LibuvStreamWrap, WrapType>::value \|\|
222			std::is_base_of<UDPWrap, WrapType>::value,
223			"Can only accept stream handles");
224
225		320	EscapableHandleScope scope(env->isolate());
226			Local<Object> wrap_obj;
227
228	✗✓	640	if (!WrapType::Instantiate(env, parent, WrapType::SOCKET).ToLocal(&wrap_obj))
229			return Local<Object>();
230
231		320	HandleWrap* wrap = Unwrap<HandleWrap>(wrap_obj);
232	✗✓	320	CHECK_NOT_NULL(wrap);
233		320	uv_stream_t* stream = reinterpret_cast<uv_stream_t*>(wrap->GetHandle());
234	✗✓	320	CHECK_NOT_NULL(stream);
235
236	✗✓	320	if (uv_accept(parent->stream(), stream))
237			ABORT();
238
239		320	return scope.Escape(wrap_obj);
240			}
241
242
243		73328	void LibuvStreamWrap::OnUvRead(ssize_t nread, const uv_buf_t* buf) {
244		73328	HandleScope scope(env()->isolate());
245		73328	Context::Scope context_scope(env()->context());
246		73328	uv_handle_type type = UV_UNKNOWN_HANDLE;
247
248	✓✓✓✓ ✓✓	77294	if (is_named_pipe_ipc() &&
249		3966	uv_pipe_pending_count(reinterpret_cast<uv_pipe_t*>(stream())) > 0) {
250		160	type = uv_pipe_pending_type(reinterpret_cast<uv_pipe_t*>(stream()));
251			}
252
253			// We should not be getting this callback if someone has already called
254			// uv_close() on the handle.
255	✗✓	73328	CHECK_EQ(persistent().IsEmpty(), false);
256
257	✓✓	73328	if (nread > 0) {
258			MaybeLocal<Object> pending_obj;
259
260	✓✓	66408	if (type == UV_TCP) {
261		129	pending_obj = AcceptHandle<TCPWrap>(env(), this);
262	✓✓	66279	} else if (type == UV_NAMED_PIPE) {
263		1	pending_obj = AcceptHandle<PipeWrap>(env(), this);
264	✓✓	66278	} else if (type == UV_UDP) {
265		30	pending_obj = AcceptHandle<UDPWrap>(env(), this);
266			} else {
267	✗✓	66248	CHECK_EQ(type, UV_UNKNOWN_HANDLE);
268			}
269
270			Local<Object> local_pending_obj;
271	✓✓	66568	if (pending_obj.ToLocal(&local_pending_obj) &&
272		160	object()->Set(env()->context(),
273			env()->pending_handle_string(),
274	✗✓✗✓	66888	local_pending_obj).IsNothing()) {
275			return;
276			}
277			}
278
279		73328	EmitRead(nread, *buf);
280			}
281
282
283		5409	void LibuvStreamWrap::GetWriteQueueSize(
284			const FunctionCallbackInfo<Value>& info) {
285			LibuvStreamWrap* wrap;
286	✗✓	5409	ASSIGN_OR_RETURN_UNWRAP(&wrap, info.This());
287
288	✗✓	5409	if (wrap->stream() == nullptr) {
289			info.GetReturnValue().Set(0);
290			return;
291			}
292
293		5409	uint32_t write_queue_size = wrap->stream()->write_queue_size;
294	✓✗	10818	info.GetReturnValue().Set(write_queue_size);
295			}
296
297
298		32	void LibuvStreamWrap::SetBlocking(const FunctionCallbackInfo<Value>& args) {
299			LibuvStreamWrap* wrap;
300	✗✓	32	ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());
301
302	✗✓	32	CHECK_GT(args.Length(), 0);
303	✗✓	32	if (!wrap->IsAlive())
304			return args.GetReturnValue().Set(UV_EINVAL);
305
306		32	bool enable = args[0]->IsTrue();
307		64	args.GetReturnValue().Set(uv_stream_set_blocking(wrap->stream(), enable));
308			}
309
310			typedef SimpleShutdownWrap<ReqWrap<uv_shutdown_t>> LibuvShutdownWrap;
311			typedef SimpleWriteWrap<ReqWrap<uv_write_t>> LibuvWriteWrap;
312
313		10015	ShutdownWrap* LibuvStreamWrap::CreateShutdownWrap(Local<Object> object) {
314		10015	return new LibuvShutdownWrap(this, object);
315			}
316
317		266	WriteWrap* LibuvStreamWrap::CreateWriteWrap(Local<Object> object) {
318		266	return new LibuvWriteWrap(this, object);
319			}
320
321
322		10015	int LibuvStreamWrap::DoShutdown(ShutdownWrap* req_wrap_) {
323		10015	LibuvShutdownWrap* req_wrap = static_cast<LibuvShutdownWrap*>(req_wrap_);
324		10015	return req_wrap->Dispatch(uv_shutdown, stream(), AfterUvShutdown);
325			}
326
327
328		10011	void LibuvStreamWrap::AfterUvShutdown(uv_shutdown_t* req, int status) {
329	✓✗	10011	LibuvShutdownWrap* req_wrap = static_cast<LibuvShutdownWrap*>(
330		10011	LibuvShutdownWrap::from_req(req));
331	✗✓	10011	CHECK_NOT_NULL(req_wrap);
332		20022	HandleScope scope(req_wrap->env()->isolate());
333		10011	Context::Scope context_scope(req_wrap->env()->context());
334		10011	req_wrap->Done(status);
335		10011	}
336
337
338			// NOTE: Call to this function could change both `buf`'s and `count`'s
339			// values, shifting their base and decrementing their length. This is
340			// required in order to skip the data that was successfully written via
341			// uv_try_write().
342		120855	int LibuvStreamWrap::DoTryWrite(uv_buf_t** bufs, size_t* count) {
343			int err;
344			size_t written;
345		120855	uv_buf_t* vbufs = *bufs;
346		120855	size_t vcount = *count;
347
348		120855	err = uv_try_write(stream(), vbufs, vcount);
349	✓✗✓✓	120855	if (err == UV_ENOSYS \|\| err == UV_EAGAIN)
350		27	return 0;
351	✓✓	120828	if (err < 0)
352		2510	return err;
353
354			// Slice off the buffers: skip all written buffers and slice the one that
355			// was partially written.
356		118318	written = err;
357	✓✓	314867	for (; vcount > 0; vbufs++, vcount--) {
358			// Slice
359	✓✓	196682	if (vbufs[0].len > written) {
360		133	vbufs[0].base += written;
361		133	vbufs[0].len -= written;
362		133	written = 0;
363		133	break;
364
365			// Discard
366			} else {
367		196549	written -= vbufs[0].len;
368			}
369			}
370
371		118318	*bufs = vbufs;
372		118318	*count = vcount;
373
374		118318	return 0;
375			}
376
377
378		266	int LibuvStreamWrap::DoWrite(WriteWrap* req_wrap,
379			uv_buf_t* bufs,
380			size_t count,
381			uv_stream_t* send_handle) {
382		266	LibuvWriteWrap* w = static_cast<LibuvWriteWrap*>(req_wrap);
383		266	return w->Dispatch(uv_write2,
384			stream(),
385			bufs,
386			count,
387			send_handle,
388		266	AfterUvWrite);
389			}
390
391
392
393		265	void LibuvStreamWrap::AfterUvWrite(uv_write_t* req, int status) {
394	✓✗	265	LibuvWriteWrap* req_wrap = static_cast<LibuvWriteWrap*>(
395		265	LibuvWriteWrap::from_req(req));
396	✗✓	265	CHECK_NOT_NULL(req_wrap);
397		529	HandleScope scope(req_wrap->env()->isolate());
398		265	Context::Scope context_scope(req_wrap->env()->context());
399		265	req_wrap->Done(status);
400		264	}
401
402			} // namespace node
403
404		5281	NODE_MODULE_CONTEXT_AWARE_INTERNAL(stream_wrap,
405			node::LibuvStreamWrap::Initialize)
406		5213	NODE_MODULE_EXTERNAL_REFERENCE(
407			stream_wrap, node::LibuvStreamWrap::RegisterExternalReferences)