| /* |
| * Copyright (C) 2018 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "MessagePortChannelRegistry.h" |
| |
| #include "Logging.h" |
| #include <wtf/CompletionHandler.h> |
| #include <wtf/MainThread.h> |
| |
| namespace WebCore { |
| |
| MessagePortChannelRegistry::MessagePortChannelRegistry(CheckProcessLocalPortForActivityCallback&& checkProcessLocalPortForActivityCallback) |
| : m_checkProcessLocalPortForActivityCallback(WTFMove(checkProcessLocalPortForActivityCallback)) |
| { |
| } |
| |
| MessagePortChannelRegistry::~MessagePortChannelRegistry() |
| { |
| ASSERT(m_openChannels.isEmpty()); |
| } |
| |
| void MessagePortChannelRegistry::didCreateMessagePortChannel(const MessagePortIdentifier& port1, const MessagePortIdentifier& port2) |
| { |
| LOG(MessagePorts, "Registry: Creating MessagePortChannel %p linking %s and %s", this, port1.logString().utf8().data(), port2.logString().utf8().data()); |
| ASSERT(isMainThread()); |
| |
| MessagePortChannel::create(*this, port1, port2); |
| } |
| |
| void MessagePortChannelRegistry::messagePortChannelCreated(MessagePortChannel& channel) |
| { |
| ASSERT(isMainThread()); |
| |
| auto result = m_openChannels.ensure(channel.port1(), [channel = &channel] { |
| return channel; |
| }); |
| ASSERT(result.isNewEntry); |
| |
| result = m_openChannels.ensure(channel.port2(), [channel = &channel] { |
| return channel; |
| }); |
| ASSERT(result.isNewEntry); |
| } |
| |
| void MessagePortChannelRegistry::messagePortChannelDestroyed(MessagePortChannel& channel) |
| { |
| ASSERT(isMainThread()); |
| |
| ASSERT(m_openChannels.get(channel.port1()) == &channel); |
| ASSERT(m_openChannels.get(channel.port2()) == &channel); |
| |
| m_openChannels.remove(channel.port1()); |
| m_openChannels.remove(channel.port2()); |
| |
| LOG(MessagePorts, "Registry: After removing channel %s there are %u channels left in the registry:", channel.logString().utf8().data(), m_openChannels.size()); |
| } |
| |
| void MessagePortChannelRegistry::didEntangleLocalToRemote(const MessagePortIdentifier& local, const MessagePortIdentifier& remote, ProcessIdentifier process) |
| { |
| ASSERT(isMainThread()); |
| |
| // The channel might be gone if the remote side was closed. |
| auto* channel = m_openChannels.get(local); |
| if (!channel) |
| return; |
| |
| ASSERT_UNUSED(remote, channel->includesPort(remote)); |
| |
| channel->entanglePortWithProcess(local, process); |
| } |
| |
| void MessagePortChannelRegistry::didDisentangleMessagePort(const MessagePortIdentifier& port) |
| { |
| ASSERT(isMainThread()); |
| |
| // The channel might be gone if the remote side was closed. |
| auto* channel = m_openChannels.get(port); |
| if (!channel) |
| return; |
| |
| channel->disentanglePort(port); |
| } |
| |
| void MessagePortChannelRegistry::didCloseMessagePort(const MessagePortIdentifier& port) |
| { |
| ASSERT(isMainThread()); |
| |
| LOG(MessagePorts, "Registry: MessagePort %s closed in registry", port.logString().utf8().data()); |
| |
| auto* channel = m_openChannels.get(port); |
| if (!channel) |
| return; |
| |
| #ifndef NDEBUG |
| if (channel && channel->hasAnyMessagesPendingOrInFlight()) |
| LOG(MessagePorts, "Registry: (Note) The channel closed for port %s had messages pending or in flight", port.logString().utf8().data()); |
| #endif |
| |
| channel->closePort(port); |
| |
| // FIXME: When making message ports be multi-process, this should probably push a notification |
| // to the remaining port to tell it this port closed. |
| } |
| |
| bool MessagePortChannelRegistry::didPostMessageToRemote(MessageWithMessagePorts&& message, const MessagePortIdentifier& remoteTarget) |
| { |
| ASSERT(isMainThread()); |
| |
| LOG(MessagePorts, "Registry: Posting message to MessagePort %s in registry", remoteTarget.logString().utf8().data()); |
| |
| // The channel might be gone if the remote side was closed. |
| auto* channel = m_openChannels.get(remoteTarget); |
| if (!channel) { |
| LOG(MessagePorts, "Registry: Could not find MessagePortChannel for port %s; It was probably closed. Message will be dropped.", remoteTarget.logString().utf8().data()); |
| return false; |
| } |
| |
| return channel->postMessageToRemote(WTFMove(message), remoteTarget); |
| } |
| |
| void MessagePortChannelRegistry::takeAllMessagesForPort(const MessagePortIdentifier& port, CompletionHandler<void(Vector<MessageWithMessagePorts>&&, CompletionHandler<void()>&&)>&& callback) |
| { |
| ASSERT(isMainThread()); |
| |
| LOG(MessagePorts, "Registry: Taking all messages for MessagePort %s", port.logString().utf8().data()); |
| |
| // The channel might be gone if the remote side was closed. |
| auto* channel = m_openChannels.get(port); |
| if (!channel) { |
| callback({ }, [] { }); |
| return; |
| } |
| |
| channel->takeAllMessagesForPort(port, WTFMove(callback)); |
| } |
| |
| void MessagePortChannelRegistry::checkRemotePortForActivity(const MessagePortIdentifier& remoteTarget, CompletionHandler<void(MessagePortChannelProvider::HasActivity)>&& callback) |
| { |
| ASSERT(isMainThread()); |
| |
| // The channel might be gone if the remote side was closed. |
| auto* channel = m_openChannels.get(remoteTarget); |
| if (!channel) { |
| callback(MessagePortChannelProvider::HasActivity::No); |
| return; |
| } |
| |
| channel->checkRemotePortForActivity(remoteTarget, WTFMove(callback)); |
| } |
| |
| MessagePortChannel* MessagePortChannelRegistry::existingChannelContainingPort(const MessagePortIdentifier& port) |
| { |
| ASSERT(isMainThread()); |
| |
| return m_openChannels.get(port); |
| } |
| |
| void MessagePortChannelRegistry::checkProcessLocalPortForActivity(const MessagePortIdentifier& messagePortIdentifier, ProcessIdentifier processIdentifier, CompletionHandler<void(MessagePortChannelProvider::HasActivity)>&& callback) |
| { |
| m_checkProcessLocalPortForActivityCallback(messagePortIdentifier, processIdentifier, WTFMove(callback)); |
| } |
| |
| } // namespace WebCore |