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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "modules/fetch/ReadableStreamDataConsumerHandle.h" | 5 #include "modules/fetch/ReadableStreamDataConsumerHandle.h" |
6 | 6 |
7 #include "bindings/core/v8/ExceptionState.h" | 7 #include "bindings/core/v8/ExceptionState.h" |
8 #include "bindings/core/v8/ReadableStreamOperations.h" | 8 #include "bindings/core/v8/ReadableStreamOperations.h" |
9 #include "bindings/core/v8/ScriptFunction.h" | 9 #include "bindings/core/v8/ScriptFunction.h" |
10 #include "bindings/core/v8/ScriptState.h" | 10 #include "bindings/core/v8/ScriptState.h" |
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112 | 112 |
113 Result endRead(size_t readSize) override | 113 Result endRead(size_t readSize) override |
114 { | 114 { |
115 return m_readingContext->endRead(readSize); | 115 return m_readingContext->endRead(readSize); |
116 } | 116 } |
117 | 117 |
118 private: | 118 private: |
119 RefPtr<ReadingContext> m_readingContext; | 119 RefPtr<ReadingContext> m_readingContext; |
120 }; | 120 }; |
121 | 121 |
122 static PassRefPtr<ReadingContext> create(ScriptState* scriptState, v8::Local
<v8::Value> stream) | 122 static PassRefPtr<ReadingContext> create(ScriptState* scriptState, ScriptVal
ue stream) |
123 { | 123 { |
124 return adoptRef(new ReadingContext(scriptState, stream)); | 124 return adoptRef(new ReadingContext(scriptState, stream)); |
125 } | 125 } |
126 | 126 |
127 void attachReader(WebDataConsumerHandle::Client* client) | 127 void attachReader(WebDataConsumerHandle::Client* client) |
128 { | 128 { |
129 m_client = client; | 129 m_client = client; |
130 notifyLater(); | 130 notifyLater(); |
131 } | 131 } |
132 | 132 |
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149 *buffer = m_pendingBuffer->data() + m_pendingOffset; | 149 *buffer = m_pendingBuffer->data() + m_pendingOffset; |
150 *available = m_pendingBuffer->length() - m_pendingOffset; | 150 *available = m_pendingBuffer->length() - m_pendingOffset; |
151 return WebDataConsumerHandle::Ok; | 151 return WebDataConsumerHandle::Ok; |
152 } | 152 } |
153 ASSERT(!m_reader.isEmpty()); | 153 ASSERT(!m_reader.isEmpty()); |
154 m_isInRecursion = true; | 154 m_isInRecursion = true; |
155 if (!m_isReading) { | 155 if (!m_isReading) { |
156 m_isReading = true; | 156 m_isReading = true; |
157 ScriptState::Scope scope(m_reader.scriptState()); | 157 ScriptState::Scope scope(m_reader.scriptState()); |
158 V8RecursionScope recursionScope(m_reader.isolate()); | 158 V8RecursionScope recursionScope(m_reader.isolate()); |
159 ReadableStreamOperations::read(m_reader.scriptState(), m_reader.v8Va
lue()).then( | 159 ReadableStreamOperations::read(m_reader.scriptState(), m_reader).the
n(OnFulfilled::createFunction(m_reader.scriptState(), m_weakPtrFactory.createWea
kPtr()), OnRejected::createFunction(m_reader.scriptState(), m_weakPtrFactory.cre
ateWeakPtr())); |
160 OnFulfilled::createFunction(m_reader.scriptState(), m_weakPtrFac
tory.createWeakPtr()), | |
161 OnRejected::createFunction(m_reader.scriptState(), m_weakPtrFact
ory.createWeakPtr())); | |
162 // Note: Microtasks may run here. | 160 // Note: Microtasks may run here. |
163 } | 161 } |
164 m_isInRecursion = false; | 162 m_isInRecursion = false; |
165 return WebDataConsumerHandle::ShouldWait; | 163 return WebDataConsumerHandle::ShouldWait; |
166 } | 164 } |
167 | 165 |
168 Result endRead(size_t readSize) | 166 Result endRead(size_t readSize) |
169 { | 167 { |
170 ASSERT(m_pendingBuffer); | 168 ASSERT(m_pendingBuffer); |
171 ASSERT(m_pendingOffset + readSize <= m_pendingBuffer->length()); | 169 ASSERT(m_pendingOffset + readSize <= m_pendingBuffer->length()); |
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219 m_client->didGetReadable(); | 217 m_client->didGetReadable(); |
220 } | 218 } |
221 | 219 |
222 void notifyLater() | 220 void notifyLater() |
223 { | 221 { |
224 ASSERT(m_client); | 222 ASSERT(m_client); |
225 Platform::current()->currentThread()->taskRunner()->postTask(BLINK_FROM_
HERE, bind(&ReadingContext::notify, PassRefPtr<ReadingContext>(this))); | 223 Platform::current()->currentThread()->taskRunner()->postTask(BLINK_FROM_
HERE, bind(&ReadingContext::notify, PassRefPtr<ReadingContext>(this))); |
226 } | 224 } |
227 | 225 |
228 private: | 226 private: |
229 ReadingContext(ScriptState* scriptState, v8::Local<v8::Value> stream) | 227 ReadingContext(ScriptState* scriptState, ScriptValue stream) |
230 : m_client(nullptr) | 228 : m_client(nullptr) |
231 , m_weakPtrFactory(this) | 229 , m_weakPtrFactory(this) |
232 , m_pendingOffset(0) | 230 , m_pendingOffset(0) |
233 , m_isReading(false) | 231 , m_isReading(false) |
234 , m_isDone(false) | 232 , m_isDone(false) |
235 , m_hasError(false) | 233 , m_hasError(false) |
236 , m_isInRecursion(false) | 234 , m_isInRecursion(false) |
237 { | 235 { |
238 if (!ReadableStreamOperations::isLocked(scriptState, stream)) { | 236 if (!ReadableStreamOperations::isLocked(scriptState, stream)) { |
239 // Here the stream implementation must not throw an exception. | 237 // Here the stream implementation must not throw an exception. |
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253 WebDataConsumerHandle::Client* m_client; | 251 WebDataConsumerHandle::Client* m_client; |
254 RefPtr<DOMUint8Array> m_pendingBuffer; | 252 RefPtr<DOMUint8Array> m_pendingBuffer; |
255 WeakPtrFactory<ReadingContext> m_weakPtrFactory; | 253 WeakPtrFactory<ReadingContext> m_weakPtrFactory; |
256 size_t m_pendingOffset; | 254 size_t m_pendingOffset; |
257 bool m_isReading; | 255 bool m_isReading; |
258 bool m_isDone; | 256 bool m_isDone; |
259 bool m_hasError; | 257 bool m_hasError; |
260 bool m_isInRecursion; | 258 bool m_isInRecursion; |
261 }; | 259 }; |
262 | 260 |
263 ReadableStreamDataConsumerHandle::ReadableStreamDataConsumerHandle(ScriptState*
scriptState, v8::Local<v8::Value> stream) | 261 ReadableStreamDataConsumerHandle::ReadableStreamDataConsumerHandle(ScriptState*
scriptState, ScriptValue stream) |
264 : m_readingContext(ReadingContext::create(scriptState, stream)) | 262 : m_readingContext(ReadingContext::create(scriptState, stream)) |
265 { | 263 { |
266 } | 264 } |
267 ReadableStreamDataConsumerHandle::~ReadableStreamDataConsumerHandle() = default; | 265 ReadableStreamDataConsumerHandle::~ReadableStreamDataConsumerHandle() = default; |
268 | 266 |
269 FetchDataConsumerHandle::Reader* ReadableStreamDataConsumerHandle::obtainReaderI
nternal(Client* client) | 267 FetchDataConsumerHandle::Reader* ReadableStreamDataConsumerHandle::obtainReaderI
nternal(Client* client) |
270 { | 268 { |
271 return new ReadingContext::ReaderImpl(m_readingContext, client); | 269 return new ReadingContext::ReaderImpl(m_readingContext, client); |
272 } | 270 } |
273 | 271 |
274 } // namespace blink | 272 } // namespace blink |
275 | 273 |
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