[*] 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>

2 files changed, 8 insertions, 2 deletions

diff --git a/src/android/app/src/main/jni/game_metadata.cpp b/src/android/app/src/main/jni/game_metadata.cpp
index c33763b471..e9c03b6440 100644
--- a/src/android/app/src/main/jni/game_metadata.cpp
+++ b/src/android/app/src/main/jni/game_metadata.cpp
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -18,7 +21,7 @@ struct RomMetadata {
     bool isHomebrew;
 };
 
-std::unordered_map<std::string, RomMetadata> m_rom_metadata_cache;
+ankerl::unordered_dense::map<std::string, RomMetadata> m_rom_metadata_cache;
 
 RomMetadata CacheRomMetadata(const std::string& path) {
     const auto file =
diff --git a/src/android/app/src/main/jni/native_input.cpp b/src/android/app/src/main/jni/native_input.cpp
index 5b69826c75..730d4f0a27 100644
--- a/src/android/app/src/main/jni/native_input.cpp
+++ b/src/android/app/src/main/jni/native_input.cpp
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -18,7 +21,7 @@
 #include "input_common/drivers/virtual_gamepad.h"
 #include "native.h"
 
-std::unordered_map<std::string, std::unique_ptr<AndroidConfig>> map_profiles;
+ankerl::unordered_dense::map<std::string, std::unique_ptr<AndroidConfig>> map_profiles;
 
 bool IsHandheldOnly() {
     const auto npad_style_set =