PlatformMessagePortChannel.cpp [plain text]
#include "config.h"
#include "PlatformMessagePortChannel.h"
#include "MessagePort.h"
#include "ScriptExecutionContext.h"
namespace WebCore {
void MessagePortChannel::createChannel(PassRefPtr<MessagePort> port1, PassRefPtr<MessagePort> port2)
{
PlatformMessagePortChannel::createChannel(port1, port2);
}
PassOwnPtr<MessagePortChannel> MessagePortChannel::create(PassRefPtr<PlatformMessagePortChannel> channel)
{
return adoptPtr(new MessagePortChannel(channel));
}
MessagePortChannel::MessagePortChannel(PassRefPtr<PlatformMessagePortChannel> channel)
: m_channel(channel)
{
}
MessagePortChannel::~MessagePortChannel()
{
m_channel->close();
}
bool MessagePortChannel::entangleIfOpen(MessagePort* port)
{
return m_channel->entangleIfOpen(port);
}
void MessagePortChannel::disentangle()
{
m_channel->disentangle();
}
void MessagePortChannel::postMessageToRemote(PassOwnPtr<MessagePortChannel::EventData> message)
{
m_channel->postMessageToRemote(message);
}
bool MessagePortChannel::tryGetMessageFromRemote(OwnPtr<MessagePortChannel::EventData>& result)
{
return m_channel->tryGetMessageFromRemote(result);
}
void MessagePortChannel::close()
{
m_channel->close();
}
bool MessagePortChannel::isConnectedTo(MessagePort* port)
{
return m_channel->isConnectedTo(port);
}
bool MessagePortChannel::hasPendingActivity()
{
return m_channel->hasPendingActivity();
}
MessagePort* MessagePortChannel::locallyEntangledPort(const ScriptExecutionContext* context)
{
return m_channel->locallyEntangledPort(context);
}
PassRefPtr<PlatformMessagePortChannel> PlatformMessagePortChannel::create(PassRefPtr<MessagePortQueue> incoming, PassRefPtr<MessagePortQueue> outgoing)
{
return adoptRef(new PlatformMessagePortChannel(incoming, outgoing));
}
PlatformMessagePortChannel::PlatformMessagePortChannel(PassRefPtr<MessagePortQueue> incoming, PassRefPtr<MessagePortQueue> outgoing)
: m_entangledChannel(0)
, m_incomingQueue(incoming)
, m_outgoingQueue(outgoing)
, m_remotePort(0)
{
}
PlatformMessagePortChannel::~PlatformMessagePortChannel()
{
}
void PlatformMessagePortChannel::createChannel(PassRefPtr<MessagePort> port1, PassRefPtr<MessagePort> port2)
{
RefPtr<PlatformMessagePortChannel::MessagePortQueue> queue1 = PlatformMessagePortChannel::MessagePortQueue::create();
RefPtr<PlatformMessagePortChannel::MessagePortQueue> queue2 = PlatformMessagePortChannel::MessagePortQueue::create();
RefPtr<PlatformMessagePortChannel> channel1 = PlatformMessagePortChannel::create(queue1, queue2);
RefPtr<PlatformMessagePortChannel> channel2 = PlatformMessagePortChannel::create(queue2, queue1);
channel1->setEntangledChannel(channel2);
channel2->setEntangledChannel(channel1);
port1->entangle(MessagePortChannel::create(channel2));
port2->entangle(MessagePortChannel::create(channel1));
}
bool PlatformMessagePortChannel::entangleIfOpen(MessagePort* port)
{
RefPtr<PlatformMessagePortChannel> remote = entangledChannel();
if (!remote)
return false;
remote->setRemotePort(port);
return true;
}
void PlatformMessagePortChannel::disentangle()
{
RefPtr<PlatformMessagePortChannel> remote = entangledChannel();
if (remote)
remote->setRemotePort(0);
}
void PlatformMessagePortChannel::setRemotePort(MessagePort* port)
{
MutexLocker lock(m_mutex);
ASSERT(!port || !m_remotePort);
m_remotePort = port;
}
MessagePort* PlatformMessagePortChannel::remotePort()
{
MutexLocker lock(m_mutex);
return m_remotePort;
}
PassRefPtr<PlatformMessagePortChannel> PlatformMessagePortChannel::entangledChannel()
{
MutexLocker lock(m_mutex);
return m_entangledChannel;
}
void PlatformMessagePortChannel::setEntangledChannel(PassRefPtr<PlatformMessagePortChannel> remote)
{
MutexLocker lock(m_mutex);
if (remote)
ASSERT(!m_entangledChannel.get());
m_entangledChannel = remote;
}
void PlatformMessagePortChannel::postMessageToRemote(PassOwnPtr<MessagePortChannel::EventData> message)
{
MutexLocker lock(m_mutex);
if (!m_outgoingQueue)
return;
bool wasEmpty = m_outgoingQueue->appendAndCheckEmpty(message);
if (wasEmpty && m_remotePort)
m_remotePort->messageAvailable();
}
bool PlatformMessagePortChannel::tryGetMessageFromRemote(OwnPtr<MessagePortChannel::EventData>& result)
{
MutexLocker lock(m_mutex);
result = m_incomingQueue->tryGetMessage();
return result;
}
bool PlatformMessagePortChannel::isConnectedTo(MessagePort* port)
{
MutexLocker lock(m_mutex);
return m_remotePort == port;
}
void PlatformMessagePortChannel::close()
{
RefPtr<PlatformMessagePortChannel> remote = entangledChannel();
if (!remote)
return;
closeInternal();
remote->closeInternal();
}
void PlatformMessagePortChannel::closeInternal()
{
MutexLocker lock(m_mutex);
m_remotePort = 0;
m_entangledChannel = 0;
m_outgoingQueue = 0;
}
bool PlatformMessagePortChannel::hasPendingActivity()
{
MutexLocker lock(m_mutex);
return !m_incomingQueue->isEmpty();
}
MessagePort* PlatformMessagePortChannel::locallyEntangledPort(const ScriptExecutionContext* context)
{
MutexLocker lock(m_mutex);
if (m_remotePort) {
ScriptExecutionContext* remoteContext = m_remotePort->scriptExecutionContext();
if (remoteContext == context || (remoteContext && remoteContext->isDocument() && context->isDocument()))
return m_remotePort;
}
return 0;
}
}