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| 1 /* | 1 /* |
| 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. | 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
| 6 * are met: | 6 * are met: |
| 7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
| 8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
| 10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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| 51 // Don't need to call processMessagePortMessagesSoon() here, because the por
t will not be opened until start() is invoked. | 51 // Don't need to call processMessagePortMessagesSoon() here, because the por
t will not be opened until start() is invoked. |
| 52 } | 52 } |
| 53 | 53 |
| 54 MessagePort::~MessagePort() | 54 MessagePort::~MessagePort() |
| 55 { | 55 { |
| 56 close(); | 56 close(); |
| 57 if (m_executionContext) | 57 if (m_executionContext) |
| 58 m_executionContext->destroyedMessagePort(this); | 58 m_executionContext->destroyedMessagePort(this); |
| 59 } | 59 } |
| 60 | 60 |
| 61 void MessagePort::postMessage(PassRefPtr<SerializedScriptValue> message, const M
essagePortArray* ports, ExceptionState& es) | 61 void MessagePort::postMessage(PassRefPtr<SerializedScriptValue> message, const M
essagePortArray* ports, ExceptionState& exceptionState) |
| 62 { | 62 { |
| 63 if (!isEntangled()) | 63 if (!isEntangled()) |
| 64 return; | 64 return; |
| 65 ASSERT(m_executionContext); | 65 ASSERT(m_executionContext); |
| 66 | 66 |
| 67 OwnPtr<MessagePortChannelArray> channels; | 67 OwnPtr<MessagePortChannelArray> channels; |
| 68 // Make sure we aren't connected to any of the passed-in ports. | 68 // Make sure we aren't connected to any of the passed-in ports. |
| 69 if (ports) { | 69 if (ports) { |
| 70 for (unsigned int i = 0; i < ports->size(); ++i) { | 70 for (unsigned int i = 0; i < ports->size(); ++i) { |
| 71 MessagePort* dataPort = (*ports)[i].get(); | 71 MessagePort* dataPort = (*ports)[i].get(); |
| 72 if (dataPort == this) { | 72 if (dataPort == this) { |
| 73 es.throwDOMException(DataCloneError, ExceptionMessages::failedTo
Execute("postMessage", "MessagePort", "Item #" + String::number(i) + " in the ar
ray of ports contains the source port.")); | 73 exceptionState.throwDOMException(DataCloneError, ExceptionMessag
es::failedToExecute("postMessage", "MessagePort", "Item #" + String::number(i) +
" in the array of ports contains the source port.")); |
| 74 return; | 74 return; |
| 75 } | 75 } |
| 76 } | 76 } |
| 77 channels = MessagePort::disentanglePorts(ports, es); | 77 channels = MessagePort::disentanglePorts(ports, exceptionState); |
| 78 if (es.hadException()) | 78 if (exceptionState.hadException()) |
| 79 return; | 79 return; |
| 80 } | 80 } |
| 81 m_entangledChannel->postMessageToRemote(message, channels.release()); | 81 m_entangledChannel->postMessageToRemote(message, channels.release()); |
| 82 } | 82 } |
| 83 | 83 |
| 84 PassOwnPtr<MessagePortChannel> MessagePort::disentangle() | 84 PassOwnPtr<MessagePortChannel> MessagePort::disentangle() |
| 85 { | 85 { |
| 86 ASSERT(m_entangledChannel); | 86 ASSERT(m_entangledChannel); |
| 87 | 87 |
| 88 m_entangledChannel->disentangle(); | 88 m_entangledChannel->disentangle(); |
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| 176 | 176 |
| 177 bool MessagePort::hasPendingActivity() | 177 bool MessagePort::hasPendingActivity() |
| 178 { | 178 { |
| 179 // The spec says that entangled message ports should always be treated as if
they have a strong reference. | 179 // The spec says that entangled message ports should always be treated as if
they have a strong reference. |
| 180 // We'll also stipulate that the queue needs to be open (if the app drops it
s reference to the port before start()-ing it, then it's not really entangled as
it's unreachable). | 180 // We'll also stipulate that the queue needs to be open (if the app drops it
s reference to the port before start()-ing it, then it's not really entangled as
it's unreachable). |
| 181 if (m_started && m_entangledChannel && m_entangledChannel->hasPendingActivit
y()) | 181 if (m_started && m_entangledChannel && m_entangledChannel->hasPendingActivit
y()) |
| 182 return true; | 182 return true; |
| 183 return isEntangled(); | 183 return isEntangled(); |
| 184 } | 184 } |
| 185 | 185 |
| 186 PassOwnPtr<MessagePortChannelArray> MessagePort::disentanglePorts(const MessageP
ortArray* ports, ExceptionState& es) | 186 PassOwnPtr<MessagePortChannelArray> MessagePort::disentanglePorts(const MessageP
ortArray* ports, ExceptionState& exceptionState) |
| 187 { | 187 { |
| 188 if (!ports || !ports->size()) | 188 if (!ports || !ports->size()) |
| 189 return nullptr; | 189 return nullptr; |
| 190 | 190 |
| 191 // HashSet used to efficiently check for duplicates in the passed-in array. | 191 // HashSet used to efficiently check for duplicates in the passed-in array. |
| 192 HashSet<MessagePort*> portSet; | 192 HashSet<MessagePort*> portSet; |
| 193 | 193 |
| 194 // Walk the incoming array - if there are any duplicate ports, or null ports
or cloned ports, throw an error (per section 8.3.3 of the HTML5 spec). | 194 // Walk the incoming array - if there are any duplicate ports, or null ports
or cloned ports, throw an error (per section 8.3.3 of the HTML5 spec). |
| 195 for (unsigned i = 0; i < ports->size(); ++i) { | 195 for (unsigned i = 0; i < ports->size(); ++i) { |
| 196 MessagePort* port = (*ports)[i].get(); | 196 MessagePort* port = (*ports)[i].get(); |
| 197 if (!port || port->isNeutered() || portSet.contains(port)) { | 197 if (!port || port->isNeutered() || portSet.contains(port)) { |
| 198 String type; | 198 String type; |
| 199 if (!port) | 199 if (!port) |
| 200 type = "null"; | 200 type = "null"; |
| 201 else if (port->isNeutered()) | 201 else if (port->isNeutered()) |
| 202 type = "already neutered"; | 202 type = "already neutered"; |
| 203 else | 203 else |
| 204 type = "a duplicate"; | 204 type = "a duplicate"; |
| 205 es.throwDOMException(DataCloneError, ExceptionMessages::failedToExec
ute("disentanglePorts", "MessagePort", "Item #" + String::number(i) + " in the
array of ports is " + type + ".")); | 205 exceptionState.throwDOMException(DataCloneError, ExceptionMessages::
failedToExecute("disentanglePorts", "MessagePort", "Item #" + String::number(i)
+ " in the array of ports is " + type + ".")); |
| 206 return nullptr; | 206 return nullptr; |
| 207 } | 207 } |
| 208 portSet.add(port); | 208 portSet.add(port); |
| 209 } | 209 } |
| 210 | 210 |
| 211 // Passed-in ports passed validity checks, so we can disentangle them. | 211 // Passed-in ports passed validity checks, so we can disentangle them. |
| 212 OwnPtr<MessagePortChannelArray> portArray = adoptPtr(new MessagePortChannelA
rray(ports->size())); | 212 OwnPtr<MessagePortChannelArray> portArray = adoptPtr(new MessagePortChannelA
rray(ports->size())); |
| 213 for (unsigned i = 0; i < ports->size(); ++i) | 213 for (unsigned i = 0; i < ports->size(); ++i) |
| 214 (*portArray)[i] = (*ports)[i]->disentangle(); | 214 (*portArray)[i] = (*ports)[i]->disentangle(); |
| 215 return portArray.release(); | 215 return portArray.release(); |
| 216 } | 216 } |
| 217 | 217 |
| 218 PassOwnPtr<MessagePortArray> MessagePort::entanglePorts(ExecutionContext& contex
t, PassOwnPtr<MessagePortChannelArray> channels) | 218 PassOwnPtr<MessagePortArray> MessagePort::entanglePorts(ExecutionContext& contex
t, PassOwnPtr<MessagePortChannelArray> channels) |
| 219 { | 219 { |
| 220 if (!channels || !channels->size()) | 220 if (!channels || !channels->size()) |
| 221 return nullptr; | 221 return nullptr; |
| 222 | 222 |
| 223 OwnPtr<MessagePortArray> portArray = adoptPtr(new MessagePortArray(channels-
>size())); | 223 OwnPtr<MessagePortArray> portArray = adoptPtr(new MessagePortArray(channels-
>size())); |
| 224 for (unsigned int i = 0; i < channels->size(); ++i) { | 224 for (unsigned int i = 0; i < channels->size(); ++i) { |
| 225 RefPtr<MessagePort> port = MessagePort::create(context); | 225 RefPtr<MessagePort> port = MessagePort::create(context); |
| 226 port->entangle((*channels)[i].release()); | 226 port->entangle((*channels)[i].release()); |
| 227 (*portArray)[i] = port.release(); | 227 (*portArray)[i] = port.release(); |
| 228 } | 228 } |
| 229 return portArray.release(); | 229 return portArray.release(); |
| 230 } | 230 } |
| 231 | 231 |
| 232 } // namespace WebCore | 232 } // namespace WebCore |
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