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[client/idd] input: add transport diagnostics

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This commit is contained in:
Geoffrey McRae
2026-08-09 01:55:45 +10:00
parent 5b90384123
commit 487920ada3
9 changed files with 634 additions and 34 deletions
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73
idd/LGInput/CHIDDevice.cpp
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@@ -44,6 +44,20 @@ struct HIDQueuedReport
size_t size;
};
struct HIDStatistics
{
uint64_t direct;
uint64_t queued;
uint64_t relativeCoalesced;
uint64_t absoluteCoalesced;
uint64_t staleAbsoluteCompacted;
uint64_t keyboardDuplicates;
uint64_t consumerDuplicates;
uint64_t overflows;
uint64_t resetDiscarded;
size_t queueHighWater;
};
struct HIDDeviceContext
{
WDFQUEUE reportQueue;
@@ -63,6 +77,7 @@ struct HIDDeviceContext
bool absoluteValid;
uint16_t absoluteX;
uint16_t absoluteY;
HIDStatistics statistics;
HIDQueuedReport reports[REPORT_QUEUE_LENGTH];
CInputPipeClient * inputPipe;
};
@@ -199,6 +214,7 @@ static bool CompactStaleMotion(
if (superseded)
{
RemoveQueuedReport(context, i);
++context->statistics.staleAbsoluteCompacted;
return true;
}
}
@@ -236,6 +252,7 @@ static NTSTATUS QueueReport(
{
previous->x = static_cast<int16_t>(x);
previous->y = static_cast<int16_t>(y);
++context->statistics.relativeCoalesced;
return STATUS_SUCCESS;
}
}
@@ -250,19 +267,26 @@ static NTSTATUS QueueReport(
{
CopyMemory(tail.data, data, size);
tail.size = size;
++context->statistics.absoluteCoalesced;
return STATUS_SUCCESS;
}
}
else if (reportId == HID_REPORT_ID_KEYBOARD &&
tail.size == size && memcmp(tail.data, data, size) == 0)
{
++context->statistics.keyboardDuplicates;
return STATUS_SUCCESS;
}
}
}
if (context->reportCount == REPORT_QUEUE_LENGTH)
{
if (!CompactStaleMotion(context, reportId))
{
++context->statistics.overflows;
return STATUS_BUFFER_OVERFLOW;
}
}
const size_t index =
@@ -272,6 +296,9 @@ static NTSTATUS QueueReport(
report->size = size;
report->pureMotion = pureMotion;
++context->reportCount;
++context->statistics.queued;
if (context->reportCount > context->statistics.queueHighWater)
context->statistics.queueHighWater = context->reportCount;
return STATUS_SUCCESS;
}
@@ -454,7 +481,10 @@ NTSTATUS CHIDDevice::SubmitReport(
if (reportId == HID_REPORT_ID_CONSUMER &&
context->consumerUsage ==
static_cast<const HIDConsumerReport *>(report)->usage)
{
++context->statistics.consumerDuplicates;
return STATUS_SUCCESS;
}
bool pureMotion = false;
switch (reportId)
@@ -493,7 +523,11 @@ NTSTATUS CHIDDevice::SubmitReport(
status = QueueReport(context, report, size, pureMotion);
}
else if (NT_SUCCESS(status))
{
status = CopyToRequest(request, report, size);
if (NT_SUCCESS(status))
++context->statistics.direct;
}
if (NT_SUCCESS(status))
{
@@ -553,6 +587,7 @@ NTSTATUS CHIDDevice::ResetReports()
absoluteValid = context->absoluteValid;
absoluteX = context->absoluteX;
absoluteY = context->absoluteY;
context->statistics.resetDiscarded += context->reportCount;
context->reportHead = 0;
context->reportCount = 0;
context->mouseMode = 0;
@@ -601,6 +636,44 @@ NTSTATUS CHIDDevice::ResetReports()
return status;
}
void CHIDDevice::LogStatistics()
{
HIDStatistics statistics = {};
{
CSRWSharedLock deviceLock(&s_deviceLock);
HIDDeviceContext * context = s_device;
if (!context)
return;
CSRWExclusiveLock reportLock(&context->reportLock);
statistics = context->statistics;
context->statistics = {};
context->statistics.queueHighWater = context->reportCount;
}
if (!(statistics.direct || statistics.queued ||
statistics.relativeCoalesced || statistics.absoluteCoalesced ||
statistics.staleAbsoluteCompacted ||
statistics.keyboardDuplicates || statistics.consumerDuplicates ||
statistics.overflows || statistics.resetDiscarded))
return;
DEBUG_TRACE("HID reports: %llu direct, %llu queued, peak %zu; "
"%llu relative and %llu absolute coalesced, %llu stale absolute "
"compacted, %llu keyboard and %llu consumer duplicates, "
"%llu overflows, %llu discarded on reset",
static_cast<unsigned long long>(statistics.direct),
static_cast<unsigned long long>(statistics.queued),
statistics.queueHighWater,
static_cast<unsigned long long>(statistics.relativeCoalesced),
static_cast<unsigned long long>(statistics.absoluteCoalesced),
static_cast<unsigned long long>(statistics.staleAbsoluteCompacted),
static_cast<unsigned long long>(statistics.keyboardDuplicates),
static_cast<unsigned long long>(statistics.consumerDuplicates),
static_cast<unsigned long long>(statistics.overflows),
static_cast<unsigned long long>(statistics.resetDiscarded));
}
VOID HIDEvtIoDeviceControl(
_In_ WDFQUEUE queue,
_In_ WDFREQUEST request,