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[*] change all std::unordered_map and std::unordered_set into ankerl::unordered_dense::map/set variants (#3442)

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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>
This commit is contained in:
lizzie 2026-02-10 03:34:07 +01:00 • committed by crueter
parent 0f8b35c4cd
commit a8093c2a3c
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GPG key ID: 425ACD2D4830EBC6
87 changed files with 368 additions and 254 deletions
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2
src/common/CMakeLists.txt
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@ -253,7 +253,7 @@ if (lz4_ADDED)
target_include_directories(common PRIVATE ${lz4_SOURCE_DIR}/lib)
endif()
target_link_libraries(common PUBLIC fmt::fmt stb::headers Threads::Threads)
target_link_libraries(common PUBLIC fmt::fmt stb::headers Threads::Threads unordered_dense::unordered_dense)
target_link_libraries(common PRIVATE lz4::lz4 LLVM::Demangle zstd::zstd)
if(ANDROID)

8
src/common/fs/path_util.cpp
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@ -1,4 +1,4 @@
// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
@ -7,7 +7,7 @@
#include <algorithm>
#include <iostream>
#include <sstream>
#include <unordered_map>
#include <ankerl/unordered_dense.h>
#include "common/assert.h"
#include "common/fs/fs.h"
@ -193,8 +193,8 @@ private:
SetLegacyPathImpl(legacy_path, new_path);
}
std::unordered_map<EdenPath, fs::path> eden_paths;
std::unordered_map<EmuPath, fs::path> legacy_paths;
ankerl::unordered_dense::map<EdenPath, fs::path> eden_paths;
ankerl::unordered_dense::map<EmuPath, fs::path> legacy_paths;
};
bool ValidatePath(const fs::path& path) {

6
src/common/host_memory.cpp
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@ -1,4 +1,4 @@
// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
@ -7,7 +7,7 @@
#ifdef _WIN32
#include <iterator>
#include <unordered_map>
#include <ankerl/unordered_dense.h>
#include <boost/icl/separate_interval_set.hpp>
#include <windows.h>
#include "common/dynamic_library.h"
@ -391,7 +391,7 @@ private:
std::mutex placeholder_mutex; ///< Mutex for placeholders
boost::icl::separate_interval_set<size_t> placeholders; ///< Mapped placeholders
std::unordered_map<size_t, size_t> placeholder_host_pointers; ///< Placeholder backing offset
ankerl::unordered_dense::map<size_t, size_t> placeholder_host_pointers; ///< Placeholder backing offset
};
#else // ^^^ Windows ^^^ vvv POSIX vvv

7
src/common/input.h
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@ -1,3 +1,6 @@
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: 2017 Citra Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
@ -6,7 +9,7 @@
#include <functional>
#include <memory>
#include <string>
#include <unordered_map>
#include <ankerl/unordered_dense.h>
#include <utility>
#include <vector>
#include "common/logging/log.h"
@ -409,7 +412,7 @@ public:
namespace Impl {
template <typename InputDeviceType>
using FactoryListType = std::unordered_map<std::string, std::shared_ptr<Factory<InputDeviceType>>>;
using FactoryListType = ankerl::unordered_dense::map<std::string, std::shared_ptr<Factory<InputDeviceType>>>;
template <typename InputDeviceType>
struct FactoryList {

7
src/common/param_package.h
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@ -1,3 +1,6 @@
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: 2017 Citra Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
@ -5,14 +8,14 @@
#include <initializer_list>
#include <string>
#include <unordered_map>
#include <ankerl/unordered_dense.h>
namespace Common {
/// A string-based key-value container supporting serializing to and deserializing from a string
class ParamPackage {
public:
using DataType = std::unordered_map<std::string, std::string>;
using DataType = ankerl::unordered_dense::map<std::string, std::string>;
ParamPackage() = default;
explicit ParamPackage(const std::string& serialized);