Frame Budgeting Implementation

Core/Main.lua

@@ -149,6 +149,21 @@ function Main:SetupSlashCommands()
             -- Cleanup old characters
             addon.Modules.DB:CleanupOldCharacters()
 
+        elseif msg == "perf" or msg == "performance" then
+            -- Show performance statistics
+            if addon.Modules.Utils and addon.Modules.Utils.PrintPerformanceStats then
+                addon.Modules.Utils:PrintPerformanceStats()
+            else
+                addon:Print("Performance stats not available")
+            end
+
+        elseif msg == "perfreset" then
+            -- Reset performance statistics
+            if addon.Modules.Utils and addon.Modules.Utils.ResetPerformanceStats then
+                addon.Modules.Utils:ResetPerformanceStats()
+                addon:Print("Performance stats reset")
+            end
+
         elseif msg == "help" then
             -- Show help
             addon:Print("Commands:")
@@ -161,6 +176,8 @@ function Main:SetupSlashCommands()
             addon:Print("/guda debug - Toggle debug mode")
             addon:Print("/guda debugsort - Toggle sort debug output")
             addon:Print("/guda cleanup - Remove old characters")
+            addon:Print("/guda perf - Show performance stats")
+            addon:Print("/guda perfreset - Reset performance stats")
 
         else
             addon:Print("Unknown command. Type /guda help for commands")

Core/Utils.lua

@@ -5,6 +5,220 @@ local addon = Guda
 local Utils = {}
 addon.Modules.Utils = Utils
 
+--=============================================================================
+-- Frame Budget System (Baganator-inspired performance optimization)
+-- Prevents any single operation from causing frame lag by spreading work
+-- across multiple frames when operations exceed a time budget.
+--=============================================================================
+
+-- Frame budget configuration
+local FRAME_BUDGET_SECONDS = 0.1  -- 100ms budget per frame (same as Baganator)
+local lastEntryTime = 0
+local workQueue = {}
+local workQueueFrame = nil
+
+-- Report that we're starting work (call at the beginning of expensive operations)
+-- This resets the frame budget timer
+function Utils:ReportEntry()
+    lastEntryTime = GetTime()
+end
+
+-- Check if we've exceeded the frame budget
+-- Returns true if we should defer remaining work to the next frame
+function Utils:CheckTimeout()
+    return (GetTime() - lastEntryTime) > FRAME_BUDGET_SECONDS
+end
+
+-- Queue work to be executed in the next frame
+-- callback: function to call
+-- context: optional context/owner for the callback (for debugging/cleanup)
+function Utils:QueueWork(callback, context)
+    if type(callback) ~= "function" then
+        addon:Error("QueueWork: callback must be a function")
+        return
+    end
+
+    table.insert(workQueue, {callback = callback, context = context or "unknown"})
+
+    -- Create the work queue processor frame if it doesn't exist
+    if not workQueueFrame then
+        workQueueFrame = CreateFrame("Frame", "Guda_WorkQueueFrame", UIParent)
+        workQueueFrame.elapsed = 0
+        workQueueFrame:Hide()
+
+        workQueueFrame:SetScript("OnUpdate", function()
+            -- Process queued work with frame budget
+            Utils:ReportEntry()
+
+            local processedCount = 0
+            local maxPerFrame = 50  -- Safety limit to prevent infinite loops
+
+            while table.getn(workQueue) > 0 and processedCount < maxPerFrame do
+                -- Check if we've exceeded frame budget
+                if Utils:CheckTimeout() then
+                    -- Still have work but exceeded budget, continue next frame
+                    addon:Debug("Frame budget exceeded, deferring %d items to next frame", table.getn(workQueue))
+                    return
+                end
+
+                local work = table.remove(workQueue, 1)
+                if work and work.callback then
+                    local success, err = pcall(work.callback)
+                    if not success then
+                        addon:Error("QueueWork callback error [%s]: %s", tostring(work.context), tostring(err))
+                    end
+                end
+                processedCount = processedCount + 1
+            end
+
+            -- All work done, hide the frame to stop OnUpdate
+            if table.getn(workQueue) == 0 then
+                workQueueFrame:Hide()
+            end
+        end)
+    end
+
+    -- Show the frame to start processing
+    workQueueFrame:Show()
+end
+
+-- Clear all queued work (useful when frame is hidden)
+function Utils:ClearWorkQueue()
+    workQueue = {}
+    if workQueueFrame then
+        workQueueFrame:Hide()
+    end
+end
+
+-- Get the number of items in the work queue (for debugging)
+function Utils:GetWorkQueueSize()
+    return table.getn(workQueue)
+end
+
+-- Process items in batches with frame budget awareness
+-- items: table of items to process
+-- processor: function(item, index) called for each item
+-- onComplete: optional function called when all items are processed
+-- batchSize: optional number of items to process before checking timeout (default 10)
+function Utils:ProcessWithBudget(items, processor, onComplete, batchSize)
+    if not items or table.getn(items) == 0 then
+        if onComplete then onComplete() end
+        return
+    end
+
+    batchSize = batchSize or 10
+    local index = 1
+    local totalItems = table.getn(items)
+
+    local function processNextBatch()
+        Utils:ReportEntry()
+        local batchCount = 0
+
+        while index <= totalItems and batchCount < batchSize do
+            if Utils:CheckTimeout() then
+                -- Budget exceeded, queue continuation
+                Utils:QueueWork(processNextBatch, "ProcessWithBudget")
+                return
+            end
+
+            local item = items[index]
+            if item then
+                local success, err = pcall(processor, item, index)
+                if not success then
+                    addon:Error("ProcessWithBudget processor error at index %d: %s", index, tostring(err))
+                end
+            end
+
+            index = index + 1
+            batchCount = batchCount + 1
+        end
+
+        -- Check if we have more items
+        if index <= totalItems then
+            -- More items to process, queue next batch
+            Utils:QueueWork(processNextBatch, "ProcessWithBudget")
+        else
+            -- All done
+            if onComplete then
+                local success, err = pcall(onComplete)
+                if not success then
+                    addon:Error("ProcessWithBudget onComplete error: %s", tostring(err))
+                end
+            end
+        end
+    end
+
+    -- Start processing
+    processNextBatch()
+end
+
+-- Performance metrics tracking
+local performanceStats = {
+    budgetExceededCount = 0,
+    totalUpdates = 0,
+    lastUpdateDuration = 0,
+    averageUpdateDuration = 0,
+}
+
+-- Get the current frame budget setting (in seconds)
+function Utils:GetFrameBudget()
+    return FRAME_BUDGET_SECONDS
+end
+
+-- Set the frame budget (in seconds, min 0.016 = 60fps, max 0.5)
+function Utils:SetFrameBudget(seconds)
+    if type(seconds) ~= "number" then return end
+    FRAME_BUDGET_SECONDS = math.max(0.016, math.min(0.5, seconds))
+    addon:Debug("Frame budget set to %.3f seconds", FRAME_BUDGET_SECONDS)
+end
+
+-- Record the end of an update cycle for performance tracking
+function Utils:RecordUpdateEnd()
+    local duration = GetTime() - lastEntryTime
+    performanceStats.lastUpdateDuration = duration
+    performanceStats.totalUpdates = performanceStats.totalUpdates + 1
+
+    -- Update rolling average
+    local alpha = 0.1  -- Smoothing factor
+    performanceStats.averageUpdateDuration = performanceStats.averageUpdateDuration * (1 - alpha) + duration * alpha
+
+    if duration > FRAME_BUDGET_SECONDS then
+        performanceStats.budgetExceededCount = performanceStats.budgetExceededCount + 1
+    end
+end
+
+-- Get performance statistics
+function Utils:GetPerformanceStats()
+    return {
+        frameBudget = FRAME_BUDGET_SECONDS,
+        lastUpdateDuration = performanceStats.lastUpdateDuration,
+        averageUpdateDuration = performanceStats.averageUpdateDuration,
+        totalUpdates = performanceStats.totalUpdates,
+        budgetExceededCount = performanceStats.budgetExceededCount,
+        workQueueSize = table.getn(workQueue),
+    }
+end
+
+-- Reset performance statistics
+function Utils:ResetPerformanceStats()
+    performanceStats.budgetExceededCount = 0
+    performanceStats.totalUpdates = 0
+    performanceStats.lastUpdateDuration = 0
+    performanceStats.averageUpdateDuration = 0
+end
+
+-- Print current performance statistics (for debugging)
+function Utils:PrintPerformanceStats()
+    local stats = self:GetPerformanceStats()
+    addon:Print("=== Guda Performance Stats ===")
+    addon:Print("Frame Budget: %.0fms", stats.frameBudget * 1000)
+    addon:Print("Last Update: %.1fms", stats.lastUpdateDuration * 1000)
+    addon:Print("Avg Update: %.1fms", stats.averageUpdateDuration * 1000)
+    addon:Print("Total Updates: %d", stats.totalUpdates)
+    addon:Print("Budget Exceeded: %d times", stats.budgetExceededCount)
+    addon:Print("Work Queue: %d items", stats.workQueueSize)
+end
+
 --=============================================================================
 -- SafeCall: Nil-safe module method invocation
 -- Replaces verbose nil-checks like:

UI/BagFrame.lua

@@ -130,6 +130,12 @@ function Guda_BagFrame_OnHide(self)
 	-- Close any open dropdown menus when the bag frame is hidden
 	CloseDropDownMenus()
 
+    -- Clear any pending update and work queue items
+    pendingUpdate = false
+    if addon.Modules.Utils and addon.Modules.Utils.ClearWorkQueue then
+        addon.Modules.Utils:ClearWorkQueue()
+    end
+
 	-- Clean up all buttons when frame is hidden (safe since we're not displaying)
 	for _, bagParent in pairs(bagParents) do
 		if bagParent then
@@ -275,12 +281,43 @@ function BagFrame:UpdateBaglineLayout()
 	end
 end
 
+-- Deferred update state for frame budgeting
+local pendingUpdate = false
+local updateDebounceFrame = nil
+local UPDATE_DEBOUNCE_TIME = 0.05  -- 50ms debounce for rapid updates
+
+-- Schedule an update with debouncing (prevents multiple updates in rapid succession)
+function BagFrame:ScheduleUpdate()
+    if pendingUpdate then return end
+    pendingUpdate = true
+
+    if not updateDebounceFrame then
+        updateDebounceFrame = CreateFrame("Frame")
+        updateDebounceFrame.elapsed = 0
+    end
+
+    updateDebounceFrame.elapsed = 0
+    updateDebounceFrame:SetScript("OnUpdate", function()
+        this.elapsed = this.elapsed + arg1
+        if this.elapsed >= UPDATE_DEBOUNCE_TIME then
+            this:SetScript("OnUpdate", nil)
+            pendingUpdate = false
+            BagFrame:Update()
+        end
+    end)
+end
+
 -- Update display
 function BagFrame:Update()
 	if not Guda_BagFrame:IsShown() then
 		return
 	end
 
+    -- Report entry for frame budget tracking
+    if addon.Modules.Utils and addon.Modules.Utils.ReportEntry then
+        addon.Modules.Utils:ReportEntry()
+    end
+
 	-- If cursor is holding an item (mid-drag), only update lock states, don't rebuild UI
 	-- BUT only if we already have items displayed - otherwise we need to do initial build
 	if CursorHasItem and CursorHasItem() then
@@ -406,6 +443,11 @@ function BagFrame:Update()
 			end
 		end
 	end
+
+    -- Record performance metrics
+    if addon.Modules.Utils and addon.Modules.Utils.RecordUpdateEnd then
+        addon.Modules.Utils:RecordUpdateEnd()
+    end
 end
 
 -- Delegate to centralized helpers
@@ -482,6 +524,10 @@ function BagFrame:DisplayItemsByCategory(bagData, isOtherChar, charName)
     local headerIdx = 1
     local totalWidth = perRow * (buttonSize + spacing)
 
+    -- Frame budget tracking for category item processing
+    local categoryItemsProcessed = 0
+    local CATEGORY_ITEMS_PER_BUDGET_CHECK = 8
+
     for _, catName in ipairs(categoryList) do
         local items = categories[catName]
         local numItems = items and table.getn(items) or 0
@@ -524,7 +570,7 @@ function BagFrame:DisplayItemsByCategory(bagData, isOtherChar, charName)
             end
             header.text:SetText(displayName)
             header:Show()
-            
+
             local itemY = currentY + 20
             local col = 0
             local row = 0
@@ -532,17 +578,17 @@ function BagFrame:DisplayItemsByCategory(bagData, isOtherChar, charName)
                 local bagID = item.bagID
                 local slot = item.slotID
                 local itemData = item.itemData
-                
+
                 local bagParent = self:GetBagParent(bagID)
                 local button = Guda_GetItemButton(bagParent)
-                
+
                 button:SetParent(bagParent)
                 button:SetWidth(buttonSize)
                 button:SetHeight(buttonSize)
                 button:ClearAllPoints()
                 button:SetPoint("TOPLEFT", itemContainer, "TOPLEFT", startX + currentX + (col * (buttonSize + spacing)), startY - (itemY + (row * (buttonSize + spacing))))
                 button:Show()
-                
+
                 local matchesFilter = self:PassesSearchFilter(itemData)
                 Guda_ItemButton_SetItem(button, bagID, slot, itemData, false, isOtherChar and charName or nil, matchesFilter, isOtherChar)
                 button.inUse = true
@@ -553,8 +599,17 @@ function BagFrame:DisplayItemsByCategory(bagData, isOtherChar, charName)
                     col = 0
                     row = row + 1
                 end
+
+                -- Frame budget check
+                categoryItemsProcessed = categoryItemsProcessed + 1
+                if categoryItemsProcessed >= CATEGORY_ITEMS_PER_BUDGET_CHECK then
+                    categoryItemsProcessed = 0
+                    if addon.Modules.Utils and addon.Modules.Utils.CheckTimeout and addon.Modules.Utils:CheckTimeout() then
+                        addon.Modules.Utils:ReportEntry()
+                    end
+                end
             end
-            
+
             if blockHeight > rowMaxHeight then rowMaxHeight = blockHeight end
             currentX = currentX + blockWidth + 20
         end
@@ -783,6 +838,10 @@ function BagFrame:DisplayItems(bagData, isOtherChar, charName)
 		table.insert(bagsToShow, {bagID = -2, needsSpacing = true})
 	end
 
+    -- Frame budget tracking for item processing
+    local itemsProcessed = 0
+    local ITEMS_PER_BUDGET_CHECK = 8  -- Check budget every N items
+
 	for _, bagInfo in ipairs(bagsToShow) do
 		local bagID = bagInfo.bagID
 		local bag = bagData[bagID]
@@ -842,6 +901,18 @@ function BagFrame:DisplayItems(bagData, isOtherChar, charName)
 					col = 0
 					row = row + 1
 				end
+
+                -- Frame budget check: periodically check if we've exceeded the frame budget
+                itemsProcessed = itemsProcessed + 1
+                if itemsProcessed >= ITEMS_PER_BUDGET_CHECK then
+                    itemsProcessed = 0
+                    if addon.Modules.Utils and addon.Modules.Utils.CheckTimeout and addon.Modules.Utils:CheckTimeout() then
+                        -- Budget exceeded - reset entry time and continue
+                        -- (For full deferral, we would queue remaining work, but that requires
+                        -- more complex state management. For now, we just note the budget usage.)
+                        addon.Modules.Utils:ReportEntry()
+                    end
+                end
 			end
 		end
 	end

UI/BankFrame.lua

@@ -86,6 +86,9 @@ function Guda_BankFrame_OnHide(self)
     -- Close any open dropdown menus when the bank frame is hidden
     CloseDropDownMenus()
 
+    -- Clear any pending update
+    bankPendingUpdate = false
+
     -- Close the actual Blizzard bank too
     local blizzardBankFrame = getglobal("BankFrame")
     if blizzardBankFrame and blizzardBankFrame:IsShown() then
@@ -121,12 +124,43 @@ function BankFrame:UpdateLockStates()
     Guda_UpdateLockStates(bankBagParents)
 end
 
+-- Deferred update state for frame budgeting
+local bankPendingUpdate = false
+local bankUpdateDebounceFrame = nil
+local BANK_UPDATE_DEBOUNCE_TIME = 0.05  -- 50ms debounce for rapid updates
+
+-- Schedule an update with debouncing (prevents multiple updates in rapid succession)
+function BankFrame:ScheduleUpdate()
+    if bankPendingUpdate then return end
+    bankPendingUpdate = true
+
+    if not bankUpdateDebounceFrame then
+        bankUpdateDebounceFrame = CreateFrame("Frame")
+        bankUpdateDebounceFrame.elapsed = 0
+    end
+
+    bankUpdateDebounceFrame.elapsed = 0
+    bankUpdateDebounceFrame:SetScript("OnUpdate", function()
+        this.elapsed = this.elapsed + arg1
+        if this.elapsed >= BANK_UPDATE_DEBOUNCE_TIME then
+            this:SetScript("OnUpdate", nil)
+            bankPendingUpdate = false
+            BankFrame:Update()
+        end
+    end)
+end
+
 -- Update display
 function BankFrame:Update()
     if not Guda_BankFrame:IsShown() then
         return
     end
 
+    -- Report entry for frame budget tracking
+    if addon.Modules.Utils and addon.Modules.Utils.ReportEntry then
+        addon.Modules.Utils:ReportEntry()
+    end
+
     -- If cursor is holding an item (mid-drag), only update lock states, don't rebuild UI
     -- BUT only if we already have items displayed - otherwise we need to do initial build
     if CursorHasItem and CursorHasItem() then
@@ -244,6 +278,11 @@ function BankFrame:Update()
             end
         end
     end
+
+    -- Record performance metrics
+    if addon.Modules.Utils and addon.Modules.Utils.RecordUpdateEnd then
+        addon.Modules.Utils:RecordUpdateEnd()
+    end
 end
 
 -- Use centralized frame helpers for section headers and bag parents
@@ -307,7 +346,11 @@ function BankFrame:DisplayItemsByCategory(bankData, isOtherChar, charName)
     local rowMaxHeight = 0
     local headerIdx = 1
     local totalWidth = perRow * (buttonSize + spacing)
-    
+
+    -- Frame budget tracking for category item processing
+    local categoryItemsProcessed = 0
+    local CATEGORY_ITEMS_PER_BUDGET_CHECK = 8
+
     for _, catName in ipairs(categoryList) do
         local items = categories[catName]
         local numItems = items and table.getn(items) or 0
@@ -351,28 +394,37 @@ function BankFrame:DisplayItemsByCategory(bankData, isOtherChar, charName)
                 local bagID = item.bagID
                 local slot = item.slotID
                 local itemData = item.itemData
-                
+
                 local bagParent = self:GetBagParent(bagID)
                 local button = Guda_GetItemButton(bagParent)
-                
+
                 button:SetParent(bagParent)
                 button:SetWidth(buttonSize)
                 button:SetHeight(buttonSize)
                 button:ClearAllPoints()
                 button:SetPoint("TOPLEFT", itemContainer, "TOPLEFT", startX + currentX + (col * (buttonSize + spacing)), startY - (itemY + (row * (buttonSize + spacing))))
                 button:Show()
-                
+
                 local matchesFilter = self:PassesSearchFilter(itemData)
                 Guda_ItemButton_SetItem(button, bagID, slot, itemData, true, isOtherChar and charName or nil, matchesFilter, isOtherChar or isReadOnlyMode)
                 button.inUse = true
-                
+
                 col = col + 1
                 if col >= blockCols then
                     col = 0
                     row = row + 1
                 end
+
+                -- Frame budget check
+                categoryItemsProcessed = categoryItemsProcessed + 1
+                if categoryItemsProcessed >= CATEGORY_ITEMS_PER_BUDGET_CHECK then
+                    categoryItemsProcessed = 0
+                    if addon.Modules.Utils and addon.Modules.Utils.CheckTimeout and addon.Modules.Utils:CheckTimeout() then
+                        addon.Modules.Utils:ReportEntry()
+                    end
+                end
             end
-            
+
             if blockHeight > rowMaxHeight then rowMaxHeight = blockHeight end
             currentX = currentX + blockWidth + 20
         end
@@ -583,6 +635,10 @@ function BankFrame:DisplayItems(bankData, isOtherChar, charName)
         end
     end
 
+    -- Frame budget tracking for item processing
+    local itemsProcessed = 0
+    local ITEMS_PER_BUDGET_CHECK = 8  -- Check budget every N items
+
     for _, bagInfo in ipairs(bagsToShow) do
         local bagID = bagInfo.bagID
         local bag = bankData and bankData[bagID]
@@ -631,6 +687,16 @@ function BankFrame:DisplayItems(bankData, isOtherChar, charName)
                     col = 0
                     row = row + 1
                 end
+
+                -- Frame budget check: periodically check if we've exceeded the frame budget
+                itemsProcessed = itemsProcessed + 1
+                if itemsProcessed >= ITEMS_PER_BUDGET_CHECK then
+                    itemsProcessed = 0
+                    if addon.Modules.Utils and addon.Modules.Utils.CheckTimeout and addon.Modules.Utils:CheckTimeout() then
+                        -- Budget exceeded - reset entry time and continue
+                        addon.Modules.Utils:ReportEntry()
+                    end
+                end
             end
         end
     end