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[input] lgmp: make report streams mandatory

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Carry every input activation and report through its client-bound SPSC
stream. Keep the LGMP queue only for status publication and subscriber
discovery, removing transport selection and the queue-report fallback.

Retain graceful endpoint draining when a subscriber disappears and use
bounded adaptive polling while streams are active. The IDD polling setup
remains compatible with the project’s current C++ language mode.
This commit is contained in:
Geoffrey McRae
2026-08-15 14:20:59 +10:00
parent 89b1ced8fc
commit 12801df353
4 changed files with 225 additions and 502 deletions
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14
idd/LGIdd/transport/lgmp/CLGMPInputTransport.h
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@@ -42,17 +42,9 @@ class CLGMPInputTransport final : public IInputSource
{
private:
static constexpr ULONGLONG OWNER_LEASE_MS = 500;
static constexpr ULONGLONG ACTIVE_POLL_MS = 50;
static constexpr ULONGLONG LOG_INTERVAL_MS = 5000;
static constexpr unsigned DRAIN_LIMIT = 256;
enum class MessageTransport : uint8_t
{
NONE,
QUEUE,
STREAM,
};
struct StreamEndpoint
{
PLGMPHostStream stream;
@@ -96,7 +88,6 @@ private:
uint32_t m_ownerClientID = 0;
uint32_t m_ownerGeneration = 0;
uint32_t m_ownerSequence = 0;
MessageTransport m_ownerTransport = MessageTransport::NONE;
ULONGLONG m_ownerDeadline = 0;
InputTargetState m_targetState;
uint32_t m_endpointGeneration = 0;
@@ -116,14 +107,13 @@ private:
bool PublishStatus();
void FlushStatus();
void LogStatistics(ULONGLONG now);
bool DrainQueueMessages(bool& received);
bool DrainStreamMessages(bool& received);
bool ProcessMessage(uint32_t sourceClientID,
const KVMFRInputMessage& message, MessageTransport transport);
const KVMFRInputMessage& message);
bool ValidatePayload(const KVMFRInputMessage& message) const;
bool IsOwner(uint32_t sourceClientID, uint32_t generation) const;
bool Claim(uint32_t sourceClientID,
const KVMFRInputMessage& message, MessageTransport transport);
const KVMFRInputMessage& message);
void RenewLease();
void ReleaseOwner(bool reset);
void CheckOwner();