GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: stream_base-inl.h Lines: 157 165 95.2 %
Date: 2022-02-09 04:14:30 Branches: 45 60 75.0 %

Line Branch Exec Source
1
#ifndef SRC_STREAM_BASE_INL_H_
2
#define SRC_STREAM_BASE_INL_H_
3
4
#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
5
6
#include "async_wrap-inl.h"
7
#include "base_object-inl.h"
8
#include "node.h"
9
#include "stream_base.h"
10
#include "v8.h"
11
12
namespace node {
13
14
17250
StreamReq::StreamReq(
15
    StreamBase* stream,
16
17250
    v8::Local<v8::Object> req_wrap_obj) : stream_(stream) {
17
17250
  AttachToObject(req_wrap_obj);
18
17250
}
19
20
17250
void StreamReq::AttachToObject(v8::Local<v8::Object> req_wrap_obj) {
21
34500
  CHECK_EQ(req_wrap_obj->GetAlignedPointerFromInternalField(
22
               StreamReq::kStreamReqField),
23
           nullptr);
24
17250
  req_wrap_obj->SetAlignedPointerInInternalField(
25
      StreamReq::kStreamReqField, this);
26
17250
}
27
28
7300
StreamReq* StreamReq::FromObject(v8::Local<v8::Object> req_wrap_obj) {
29
  return static_cast<StreamReq*>(
30
7300
      req_wrap_obj->GetAlignedPointerFromInternalField(
31
7300
          StreamReq::kStreamReqField));
32
}
33
34
17238
void StreamReq::Dispose() {
35
34476
  BaseObjectPtr<AsyncWrap> destroy_me{GetAsyncWrap()};
36
34476
  object()->SetAlignedPointerInInternalField(
37
      StreamReq::kStreamReqField, nullptr);
38
17238
  destroy_me->Detach();
39
17238
}
40
41
17858
v8::Local<v8::Object> StreamReq::object() {
42
17858
  return GetAsyncWrap()->object();
43
}
44
45
9814
ShutdownWrap::ShutdownWrap(
46
    StreamBase* stream,
47
9814
    v8::Local<v8::Object> req_wrap_obj)
48
9814
    : StreamReq(stream, req_wrap_obj) { }
49
50
7436
WriteWrap::WriteWrap(
51
    StreamBase* stream,
52
7436
    v8::Local<v8::Object> req_wrap_obj)
53
7436
    : StreamReq(stream, req_wrap_obj) { }
54
55
12976
void StreamListener::PassReadErrorToPreviousListener(ssize_t nread) {
56
12976
  CHECK_NOT_NULL(previous_listener_);
57
12976
  previous_listener_->OnStreamRead(nread, uv_buf_init(nullptr, 0));
58
12976
}
59
60
106853
void StreamResource::PushStreamListener(StreamListener* listener) {
61
106853
  CHECK_NOT_NULL(listener);
62
106853
  CHECK_NULL(listener->stream_);
63
64
106853
  listener->previous_listener_ = listener_;
65
106853
  listener->stream_ = this;
66
67
106853
  listener_ = listener;
68
106853
}
69
70
106220
void StreamResource::RemoveStreamListener(StreamListener* listener) {
71
106220
  CHECK_NOT_NULL(listener);
72
73
  StreamListener* previous;
74
  StreamListener* current;
75
76
  // Remove from the linked list.
77
106220
  for (current = listener_, previous = nullptr;
78
       /* No loop condition because we want a crash if listener is not found */
79
630
       ; previous = current, current = current->previous_listener_) {
80
106850
    CHECK_NOT_NULL(current);
81
106850
    if (current == listener) {
82
106220
      if (previous != nullptr)
83
630
        previous->previous_listener_ = current->previous_listener_;
84
      else
85
105590
        listener_ = listener->previous_listener_;
86
106220
      break;
87
    }
88
630
  }
89
90
106220
  listener->stream_ = nullptr;
91
106220
  listener->previous_listener_ = nullptr;
92
106220
}
93
94
91867
uv_buf_t StreamResource::EmitAlloc(size_t suggested_size) {
95
91867
  DebugSealHandleScope seal_handle_scope;
96
91867
  return listener_->OnStreamAlloc(suggested_size);
97
}
98
99
106211
void StreamResource::EmitRead(ssize_t nread, const uv_buf_t& buf) {
100
106211
  DebugSealHandleScope seal_handle_scope;
101
106211
  if (nread > 0)
102
84989
    bytes_read_ += static_cast<uint64_t>(nread);
103
106211
  listener_->OnStreamRead(nread, buf);
104
106008
}
105
106
7418
void StreamResource::EmitAfterWrite(WriteWrap* w, int status) {
107
7418
  DebugSealHandleScope seal_handle_scope;
108
7418
  listener_->OnStreamAfterWrite(w, status);
109
7417
}
110
111
9807
void StreamResource::EmitAfterShutdown(ShutdownWrap* w, int status) {
112
9807
  DebugSealHandleScope seal_handle_scope;
113
9807
  listener_->OnStreamAfterShutdown(w, status);
114
9807
}
115
116
2572
void StreamResource::EmitWantsWrite(size_t suggested_size) {
117
2572
  DebugSealHandleScope seal_handle_scope;
118
2572
  listener_->OnStreamWantsWrite(suggested_size);
119
2572
}
120
121
66724
StreamBase::StreamBase(Environment* env) : env_(env) {
122
66724
  PushStreamListener(&default_listener_);
123
66724
}
124
125
33858
int StreamBase::Shutdown(v8::Local<v8::Object> req_wrap_obj) {
126
33858
  Environment* env = stream_env();
127
128
67716
  v8::HandleScope handle_scope(env->isolate());
129
130
33858
  if (req_wrap_obj.IsEmpty()) {
131
603
    if (!env->shutdown_wrap_template()
132
603
             ->NewInstance(env->context())
133
603
             .ToLocal(&req_wrap_obj)) {
134
      return UV_EBUSY;
135
    }
136
603
    StreamReq::ResetObject(req_wrap_obj);
137
  }
138
139
67716
  BaseObjectPtr<AsyncWrap> req_wrap_ptr;
140
67716
  AsyncHooks::DefaultTriggerAsyncIdScope trigger_scope(GetAsyncWrap());
141
33858
  ShutdownWrap* req_wrap = CreateShutdownWrap(req_wrap_obj);
142
33858
  if (req_wrap != nullptr)
143
9814
    req_wrap_ptr.reset(req_wrap->GetAsyncWrap());
144
33858
  int err = DoShutdown(req_wrap);
145
146

33858
  if (err != 0 && req_wrap != nullptr) {
147
5
    req_wrap->Dispose();
148
  }
149
150
33858
  const char* msg = Error();
151
33858
  if (msg != nullptr) {
152
    if (req_wrap_obj->Set(env->context(),
153
                          env->error_string(),
154
                          OneByteString(env->isolate(), msg)).IsNothing()) {
155
      return UV_EBUSY;
156
    }
157
    ClearError();
158
  }
159
160
33858
  return err;
161
}
162
163
100220
StreamWriteResult StreamBase::Write(
164
    uv_buf_t* bufs,
165
    size_t count,
166
    uv_stream_t* send_handle,
167
    v8::Local<v8::Object> req_wrap_obj) {
168
100220
  Environment* env = stream_env();
169
  int err;
170
171
100220
  size_t total_bytes = 0;
172
347281
  for (size_t i = 0; i < count; ++i)
173
247061
    total_bytes += bufs[i].len;
174
100220
  bytes_written_ += total_bytes;
175
176
100220
  if (send_handle == nullptr) {
177
100116
    err = DoTryWrite(&bufs, &count);
178

100116
    if (err != 0 || count == 0) {
179
92784
      return StreamWriteResult { false, err, nullptr, total_bytes, {} };
180
    }
181
  }
182
183
14871
  v8::HandleScope handle_scope(env->isolate());
184
185
7436
  if (req_wrap_obj.IsEmpty()) {
186
2204
    if (!env->write_wrap_template()
187
2204
             ->NewInstance(env->context())
188
2204
             .ToLocal(&req_wrap_obj)) {
189
      return StreamWriteResult { false, UV_EBUSY, nullptr, 0, {} };
190
    }
191
2204
    StreamReq::ResetObject(req_wrap_obj);
192
  }
193
194
14871
  AsyncHooks::DefaultTriggerAsyncIdScope trigger_scope(GetAsyncWrap());
195
7436
  WriteWrap* req_wrap = CreateWriteWrap(req_wrap_obj);
196
14871
  BaseObjectPtr<AsyncWrap> req_wrap_ptr(req_wrap->GetAsyncWrap());
197
198
7436
  err = DoWrite(req_wrap, bufs, count, send_handle);
199
7435
  bool async = err == 0;
200
201
7435
  if (!async) {
202
9
    req_wrap->Dispose();
203
9
    req_wrap = nullptr;
204
  }
205
206
7435
  const char* msg = Error();
207
7435
  if (msg != nullptr) {
208
8
    if (req_wrap_obj->Set(env->context(),
209
                          env->error_string(),
210
16
                          OneByteString(env->isolate(), msg)).IsNothing()) {
211
      return StreamWriteResult { false, UV_EBUSY, nullptr, 0, {} };
212
    }
213
4
    ClearError();
214
  }
215
216
  return StreamWriteResult {
217
7435
      async, err, req_wrap, total_bytes, std::move(req_wrap_ptr) };
218
}
219
220
template <typename OtherBase>
221
9814
SimpleShutdownWrap<OtherBase>::SimpleShutdownWrap(
222
    StreamBase* stream,
223
    v8::Local<v8::Object> req_wrap_obj)
224
  : ShutdownWrap(stream, req_wrap_obj),
225
    OtherBase(stream->stream_env(),
226
              req_wrap_obj,
227
9814
              AsyncWrap::PROVIDER_SHUTDOWNWRAP) {
228
9814
}
229
230
template <typename OtherBase>
231
7436
SimpleWriteWrap<OtherBase>::SimpleWriteWrap(
232
    StreamBase* stream,
233
    v8::Local<v8::Object> req_wrap_obj)
234
  : WriteWrap(stream, req_wrap_obj),
235
    OtherBase(stream->stream_env(),
236
              req_wrap_obj,
237
7436
              AsyncWrap::PROVIDER_WRITEWRAP) {
238
7436
}
239
240
66724
void StreamBase::AttachToObject(v8::Local<v8::Object> obj) {
241
66724
  obj->SetAlignedPointerInInternalField(
242
      StreamBase::kStreamBaseField, this);
243
66724
}
244
245
278105
StreamBase* StreamBase::FromObject(v8::Local<v8::Object> obj) {
246
556210
  if (obj->GetAlignedPointerFromInternalField(StreamBase::kSlot) == nullptr)
247
1
    return nullptr;
248
249
  return static_cast<StreamBase*>(
250
278104
      obj->GetAlignedPointerFromInternalField(
251
278104
          StreamBase::kStreamBaseField));
252
}
253
254
6691
WriteWrap* WriteWrap::FromObject(v8::Local<v8::Object> req_wrap_obj) {
255
6691
  return static_cast<WriteWrap*>(StreamReq::FromObject(req_wrap_obj));
256
}
257
258
template <typename T, bool kIsWeak>
259
6691
WriteWrap* WriteWrap::FromObject(
260
    const BaseObjectPtrImpl<T, kIsWeak>& base_obj) {
261
6691
  if (!base_obj) return nullptr;
262
6691
  return FromObject(base_obj->object());
263
}
264
265
ShutdownWrap* ShutdownWrap::FromObject(v8::Local<v8::Object> req_wrap_obj) {
266
  return static_cast<ShutdownWrap*>(StreamReq::FromObject(req_wrap_obj));
267
}
268
269
template <typename T, bool kIsWeak>
270
ShutdownWrap* ShutdownWrap::FromObject(
271
    const BaseObjectPtrImpl<T, kIsWeak>& base_obj) {
272
  if (!base_obj) return nullptr;
273
  return FromObject(base_obj->object());
274
}
275
276
3416
void WriteWrap::SetBackingStore(std::unique_ptr<v8::BackingStore> bs) {
277
3416
  CHECK(!backing_store_);
278
3416
  backing_store_ = std::move(bs);
279
3416
}
280
281
17225
void StreamReq::Done(int status, const char* error_str) {
282
17225
  AsyncWrap* async_wrap = GetAsyncWrap();
283
17225
  Environment* env = async_wrap->env();
284
17225
  if (error_str != nullptr) {
285
4
    v8::HandleScope handle_scope(env->isolate());
286
4
    if (async_wrap->object()->Set(
287
            env->context(),
288
            env->error_string(),
289
16
            OneByteString(env->isolate(), error_str)).IsNothing()) {
290
      return;
291
    }
292
  }
293
294
17225
  OnDone(status);
295
}
296
297
122248
void StreamReq::ResetObject(v8::Local<v8::Object> obj) {
298
  DCHECK_GT(obj->InternalFieldCount(), StreamReq::kStreamReqField);
299
300
122248
  obj->SetAlignedPointerInInternalField(StreamReq::kSlot, nullptr);
301
122248
  obj->SetAlignedPointerInInternalField(StreamReq::kStreamReqField, nullptr);
302
122248
}
303
304
}  // namespace node
305
306
#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
307
308
#endif  // SRC_STREAM_BASE_INL_H_