mirror of
https://github.com/gnif/LookingGlass.git
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94d5f3729e
Extend the clipboard target boundary with ordered prefix delivery. Pass up to four queued LGMP stream records to the Helper ring in one operation, apply state only to the accepted prefix, and retain the remaining suffix for exact retries. The channel holds its write lock across the prefix and emits one pipe doorbell per stream window instead of one per record.
82 lines
2.8 KiB
C++
82 lines
2.8 KiB
C++
/**
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* Looking Glass
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* Copyright © 2017-2026 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#pragma once
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#include "CClipboardChannel.h"
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#include "CSRWLock.h"
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#include "transport/IClipboardSource.h"
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#include "transport/ITransport.h"
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class CClipboardHub final : public IClipboardTarget,
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private IClipboardChannelHandler
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{
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private:
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CClipboardChannel& m_channel;
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CSRWLock m_lifecycleLock;
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CSRWLock m_callbackLock;
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CSRWLock m_lock;
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IClipboardSource * m_source = nullptr;
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BackendId m_backend = 0;
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uint32_t m_epoch = 0;
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uint64_t m_channelEpoch = 0;
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uint32_t m_generation = 1;
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bool m_available = false;
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bool m_active = false;
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bool m_running = false;
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bool m_reserved = false;
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bool m_failed = false;
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bool m_failurePending = false;
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bool m_stopped = false;
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void AdvanceGenerationNL();
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bool MarkFailed(IClipboardSource& source);
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ClipboardChannelResult HoldOrDiscard(
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const KVMFRClipboardMessage& record);
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void ClipboardState(bool available, uint64_t epoch) override;
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ClipboardChannelResult ClipboardRecord(
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const KVMFRClipboardMessage& record,
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std::vector<uint8_t>&& data) override;
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void ClipboardReset(uint64_t epoch, uint32_t reason) override;
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public:
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explicit CClipboardHub(CClipboardChannel& channel);
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~CClipboardHub() override;
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CClipboardHub(const CClipboardHub&) = delete;
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CClipboardHub& operator=(const CClipboardHub&) = delete;
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bool Bind(BackendId backend, uint32_t epoch, IClipboardSource& source);
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void Unbind(BackendId backend, uint32_t epoch);
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bool TakeFailure(SourceKey& source);
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void Stop();
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ClipboardChannelResult SendClipboard(
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const KVMFRClipboardMessage& record,
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const uint8_t * data) override;
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ClipboardChannelResult SendClipboardBatch(
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const ClipboardChannelWrite * records,
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size_t count, size_t& accepted) override;
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void ClipboardReceiveReady() override;
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void ClipboardFailed() override;
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};
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