1 | /* |
2 | * Copyright (C) 2018 Apple Inc. All rights reserved. |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions |
6 | * are met: |
7 | * 1. Redistributions of source code must retain the above copyright |
8 | * notice, this list of conditions and the following disclaimer. |
9 | * 2. Redistributions in binary form must reproduce the above copyright |
10 | * notice, this list of conditions and the following disclaimer in the |
11 | * documentation and/or other materials provided with the distribution. |
12 | * |
13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
14 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
15 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
17 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
18 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
19 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
20 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
21 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
22 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
23 | * THE POSSIBILITY OF SUCH DAMAGE. |
24 | */ |
25 | |
26 | #pragma once |
27 | |
28 | #include "MessagePortChannelProvider.h" |
29 | #include "MessagePortIdentifier.h" |
30 | #include "MessageWithMessagePorts.h" |
31 | #include "ProcessIdentifier.h" |
32 | #include <wtf/HashSet.h> |
33 | #include <wtf/RefCounted.h> |
34 | #include <wtf/text/WTFString.h> |
35 | |
36 | namespace WebCore { |
37 | |
38 | class MessagePortChannelRegistry; |
39 | |
40 | class MessagePortChannel : public RefCounted<MessagePortChannel> { |
41 | public: |
42 | static Ref<MessagePortChannel> create(MessagePortChannelRegistry&, const MessagePortIdentifier& port1, const MessagePortIdentifier& port2); |
43 | |
44 | ~MessagePortChannel(); |
45 | |
46 | const MessagePortIdentifier& port1() const { return m_ports[0]; } |
47 | const MessagePortIdentifier& port2() const { return m_ports[1]; } |
48 | |
49 | WEBCORE_EXPORT Optional<ProcessIdentifier> processForPort(const MessagePortIdentifier&); |
50 | bool includesPort(const MessagePortIdentifier&); |
51 | void entanglePortWithProcess(const MessagePortIdentifier&, ProcessIdentifier); |
52 | void disentanglePort(const MessagePortIdentifier&); |
53 | void closePort(const MessagePortIdentifier&); |
54 | bool postMessageToRemote(MessageWithMessagePorts&&, const MessagePortIdentifier& remoteTarget); |
55 | |
56 | void takeAllMessagesForPort(const MessagePortIdentifier&, Function<void(Vector<MessageWithMessagePorts>&&, Function<void()>&&)>&&); |
57 | void checkRemotePortForActivity(const MessagePortIdentifier&, CompletionHandler<void(MessagePortChannelProvider::HasActivity)>&& callback); |
58 | |
59 | WEBCORE_EXPORT bool hasAnyMessagesPendingOrInFlight() const; |
60 | |
61 | uint64_t beingTransferredCount(); |
62 | |
63 | #if !LOG_DISABLED |
64 | String logString() const { return makeString(m_ports[0].logString(), ":" , m_ports[1].logString()); } |
65 | #endif |
66 | |
67 | private: |
68 | MessagePortChannel(MessagePortChannelRegistry&, const MessagePortIdentifier& port1, const MessagePortIdentifier& port2); |
69 | |
70 | MessagePortIdentifier m_ports[2]; |
71 | bool m_isClosed[2] { false, false }; |
72 | Optional<ProcessIdentifier> m_processes[2]; |
73 | RefPtr<MessagePortChannel> m_entangledToProcessProtectors[2]; |
74 | Vector<MessageWithMessagePorts> m_pendingMessages[2]; |
75 | HashSet<RefPtr<MessagePortChannel>> m_pendingMessagePortTransfers[2]; |
76 | RefPtr<MessagePortChannel> m_pendingMessageProtectors[2]; |
77 | uint64_t m_messageBatchesInFlight { 0 }; |
78 | |
79 | MessagePortChannelRegistry& m_registry; |
80 | }; |
81 | |
82 | } // namespace WebCore |
83 | |