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[idd] input: preserve reports under backpressure

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Move named pipe writes off the LGMP input worker so a stalled LGInput
endpoint cannot block queue draining or lease maintenance.

Coalesce motion only under queue pressure while preserving mode, button,
wheel, and keyboard transitions. Reset HID state after discontinuities
and carry all 32 mouse button bits through the pipe and HID reports.
This commit is contained in:
Geoffrey McRae
2026-08-08 23:31:44 +10:00
parent 83c552fb9d
commit ced2fb531e
16 changed files with 820 additions and 382 deletions
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35
idd/LGCommon/CPipeEndpoint.cpp
View File

@@ -130,15 +130,9 @@ CPipeEndpoint::PipeIoResult CPipeEndpoint::WriteMessage(
const void * message,
DWORD messageSize)
{
HANDLE ioEvent = CreateEventW(nullptr, TRUE, FALSE, nullptr);
if (!ioEvent)
{
DEBUG_ERROR_HR(GetLastError(), "Failed to create named pipe write event");
return PipeIoResult::Error;
}
ResetEvent(m_writeEvent);
OVERLAPPED overlapped = {};
overlapped.hEvent = ioEvent;
overlapped.hEvent = m_writeEvent;
DWORD bytesWritten = 0;
PipeIoResult result = PipeIoResult::Success;
@@ -148,7 +142,7 @@ CPipeEndpoint::PipeIoResult CPipeEndpoint::WriteMessage(
if (error == ERROR_IO_PENDING)
result = WaitForOverlapped(
pipe,
ioEvent,
m_writeEvent,
&overlapped,
&bytesWritten,
WRITE_TIMEOUT_MS);
@@ -174,7 +168,6 @@ CPipeEndpoint::PipeIoResult CPipeEndpoint::WriteMessage(
result = PipeIoResult::Error;
}
CloseHandle(ioEvent);
return result;
}
@@ -197,9 +190,16 @@ bool CPipeEndpoint::Start(
m_mode = mode;
m_messageSize = messageSize;
m_stopEvent = CreateEventW(nullptr, TRUE, FALSE, nullptr);
if (!m_stopEvent)
m_writeEvent = CreateEventW(nullptr, TRUE, FALSE, nullptr);
if (!m_stopEvent || !m_writeEvent)
{
DEBUG_ERROR_HR(GetLastError(), "Failed to create named pipe stop event");
DEBUG_ERROR_HR(GetLastError(), "Failed to create named pipe events");
if (m_writeEvent)
CloseHandle(m_writeEvent);
if (m_stopEvent)
CloseHandle(m_stopEvent);
m_writeEvent = nullptr;
m_stopEvent = nullptr;
return false;
}
@@ -210,6 +210,8 @@ bool CPipeEndpoint::Start(
{
CloseHandle(m_stopEvent);
m_stopEvent = nullptr;
CloseHandle(m_writeEvent);
m_writeEvent = nullptr;
return false;
}
PublishPipe(pipe);
@@ -232,6 +234,8 @@ bool CPipeEndpoint::Start(
CloseHandle(m_stopEvent);
m_stopEvent = nullptr;
CloseHandle(m_writeEvent);
m_writeEvent = nullptr;
return false;
}
@@ -241,6 +245,7 @@ bool CPipeEndpoint::Start(
void CPipeEndpoint::Stop()
{
m_running.store(false);
m_connected.store(false);
if (m_stopEvent)
SetEvent(m_stopEvent);
@@ -270,6 +275,12 @@ void CPipeEndpoint::Stop()
m_stopEvent = nullptr;
}
if (m_writeEvent)
{
CloseHandle(m_writeEvent);
m_writeEvent = nullptr;
}
m_connected.store(false);
}