From a8093c2a3cf98ccccabeb1d6a2c1ccc5e191557f Mon Sep 17 00:00:00 2001
From: lizzie <lizzie@eden-emu.dev>
Date: Tue, 10 Feb 2026 03:34:07 +0100
Subject: [*] change all std::unordered_map and std::unordered_set into
 ankerl::unordered_dense::map/set variants (#3442)

mainly doing this to reduce memory footprint; we all know how nice ankerl::unordered_dense is

in theory 4x faster - in practice these maps arent that "hot" anyways so not likely to have much perf gained

i just want to reduce mem fragmentation to ease my porting process, plus it helps other platforms as well (ahem weak Mediatek devices) :)

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Co-authored-by: Caio Oliveira <caiooliveirafarias0@gmail.com>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3442
Reviewed-by: DraVee <dravee@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>
---
 src/input_common/input_engine.h | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

(limited to 'src/input_common/input_engine.h')

diff --git a/src/input_common/input_engine.h b/src/input_common/input_engine.h
index 3e328509b1..7ad40027e4 100644
--- a/src/input_common/input_engine.h
+++ b/src/input_common/input_engine.h
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -5,7 +8,7 @@
 
 #include <functional>
 #include <mutex>
-#include <unordered_map>
+#include <ankerl/unordered_dense.h>
 
 #include "common/common_types.h"
 #include "common/input.h"
@@ -267,10 +270,10 @@ protected:
 
 private:
     struct ControllerData {
-        std::unordered_map<int, bool> buttons;
-        std::unordered_map<int, u8> hat_buttons;
-        std::unordered_map<int, float> axes;
-        std::unordered_map<int, BasicMotion> motions;
+        ankerl::unordered_dense::map<int, bool> buttons;
+        ankerl::unordered_dense::map<int, u8> hat_buttons;
+        ankerl::unordered_dense::map<int, float> axes;
+        ankerl::unordered_dense::map<int, BasicMotion> motions;
         Common::Input::BatteryLevel battery{};
         Common::Input::BodyColorStatus color{};
         Common::Input::CameraStatus camera{};
@@ -298,8 +301,8 @@ private:
     bool configuring{false};
     const std::string input_engine;
     int last_callback_key = 0;
-    std::unordered_map<PadIdentifier, ControllerData> controller_list;
-    std::unordered_map<int, InputIdentifier> callback_list;
+    ankerl::unordered_dense::map<PadIdentifier, ControllerData> controller_list;
+    ankerl::unordered_dense::map<int, InputIdentifier> callback_list;
     MappingCallback mapping_callback;
 };
 
-- 
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