From eb9719cc8b9a308654ccd2c3bce8a7047b6e2a1a Mon Sep 17 00:00:00 2001
From: Nicolas James <nj3ahxac@gmail.com>
Date: Wed, 8 Apr 2026 00:56:40 +1000
Subject: Refactor storing submissions into FrameSpan class, reduce AntiLag
 thread contention

---
 src/strategies/low_latency2/queue_strategy.hh | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

(limited to 'src/strategies/low_latency2/queue_strategy.hh')

diff --git a/src/strategies/low_latency2/queue_strategy.hh b/src/strategies/low_latency2/queue_strategy.hh
index a090e1b..6d41027 100644
--- a/src/strategies/low_latency2/queue_strategy.hh
+++ b/src/strategies/low_latency2/queue_strategy.hh
@@ -1,8 +1,8 @@
 #ifndef STRATEGIES_LOW_LATENCY2_QUEUE_STRATEGY_HH_
 #define STRATEGIES_LOW_LATENCY2_QUEUE_STRATEGY_HH_
 
+#include "frame_span.hh"
 #include "strategies/queue_strategy.hh"
-#include "submission.hh"
 
 #include <atomic>
 #include <deque>
@@ -16,26 +16,27 @@ class QueueContext;
 
 class LowLatency2QueueStrategy final : public QueueStrategy {
   public:
-    static constexpr auto MAX_TRACKED_OBJECTS = 50;
+    static constexpr auto MAX_TRACKED_PRESENTS = 50;
 
     // Mapping of present_id's to submissions. Grabbed later by the device
     // strategy when we present and actually can associate them to some
     // vkSwapchainKHR.
     std::mutex mutex{};
-    std::unordered_map<std::uint64_t, std::deque<std::unique_ptr<Submission>>>
-        present_id_submissions{};
-    std::deque<std::uint64_t> present_id_ring{};
-    std::atomic<bool> is_out_of_band{}; // atomic so we don't need a lock check
+    std::unordered_map<std::uint64_t, std::unique_ptr<FrameSpan>> frame_spans{};
+    std::deque<std::uint64_t> stale_present_ids{};
+    std::atomic<bool> is_out_of_band{}; // atomic to avoid lock
 
   public:
     LowLatency2QueueStrategy(QueueContext& queue);
     virtual ~LowLatency2QueueStrategy();
 
   public:
-    virtual void notify_submit(const VkSubmitInfo& submit,
-                               std::unique_ptr<Submission> submission) override;
-    virtual void notify_submit(const VkSubmitInfo2& submit,
-                               std::unique_ptr<Submission> submission) override;
+    virtual void
+    notify_submit(const VkSubmitInfo& submit,
+                  std::shared_ptr<TimestampPool::Handle> handle) override;
+    virtual void
+    notify_submit(const VkSubmitInfo2& submit,
+                  std::shared_ptr<TimestampPool::Handle> handle) override;
     virtual void notify_present(const VkPresentInfoKHR& present) override;
 
   public:
-- 
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