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[client/idd] input: reduce network latency

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Route input through a dedicated high-priority stream, send pointer
motion as cumulative datagrams, and recover suspected loss reliably.

Reduce downstream input queuing with age-aware coalescing and input
thread scheduling.
This commit is contained in:
Geoffrey McRae
2026-10-08 20:34:04 +11:00
parent e30afaca2d
commit 1af2f13440
17 changed files with 3359 additions and 759 deletions
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24
idd/LGCommon/CPipeEndpoint.h
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@@ -80,6 +80,12 @@ public:
Client,
};
enum class ThreadScheduling
{
Normal,
Input,
};
CPipeEndpoint() = default;
~CPipeEndpoint();
@@ -92,7 +98,8 @@ public:
_In_ size_t messageSize,
_In_opt_ const SECURITY_ATTRIBUTES * serverSecurity = nullptr,
_In_ DWORD serverOpenMode = 0,
_In_ DWORD serverPipeMode = 0);
_In_ DWORD serverPipeMode = 0,
_In_ ThreadScheduling threadScheduling = ThreadScheduling::Normal);
void Stop();
void DisconnectClient();
@@ -158,13 +165,14 @@ private:
void ClosePipe(_In_ HANDLE pipe);
std::wstring m_pipeName;
size_t m_messageSize = 0;
Mode m_mode = Mode::Client;
IPipeEndpointHandler * m_handler = nullptr;
SECURITY_ATTRIBUTES m_serverSecurity = {};
bool m_hasServerSecurity = false;
DWORD m_serverOpenMode = 0;
DWORD m_serverPipeMode = 0;
size_t m_messageSize = 0;
Mode m_mode = Mode::Client;
ThreadScheduling m_threadScheduling = ThreadScheduling::Normal;
IPipeEndpointHandler * m_handler = nullptr;
SECURITY_ATTRIBUTES m_serverSecurity = {};
bool m_hasServerSecurity = false;
DWORD m_serverOpenMode = 0;
DWORD m_serverPipeMode = 0;
std::atomic<bool> m_running { false };
std::atomic<bool> m_connected { false };