[common] replace Common:: stuffs with libstdc++ equivalents

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

src/common/common_funcs.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -129,19 +132,4 @@ namespace Common {
            u64(g) << 48 | u64(h) << 56;
 }
 
-// std::size() does not support zero-size C arrays. We're fixing that.
-template <class C>
-constexpr auto Size(const C& c) -> decltype(c.size()) {
-    return std::size(c);
-}
-
-template <class C>
-constexpr std::size_t Size(const C& c) {
-    if constexpr (sizeof(C) == 0) {
-        return 0;
-    } else {
-        return std::size(c);
-    }
-}
-
 } // namespace Common

src/common/concepts.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -12,24 +15,4 @@ namespace Common {
 template <typename T>
 concept IsContiguousContainer = std::contiguous_iterator<typename T::iterator>;
 
-// TODO: Replace with std::derived_from when the <concepts> header
-//       is available on all supported platforms.
-template <typename Derived, typename Base>
-concept DerivedFrom = requires {
-                          std::is_base_of_v<Base, Derived>;
-                          std::is_convertible_v<const volatile Derived*, const volatile Base*>;
-                      };
-
-// TODO: Replace with std::convertible_to when libc++ implements it.
-template <typename From, typename To>
-concept ConvertibleTo = std::is_convertible_v<From, To>;
-
-// No equivalents in the stdlib
-
-template <typename T>
-concept IsArithmetic = std::is_arithmetic_v<T>;
-
-template <typename T>
-concept IsIntegral = std::is_integral_v<T>;
-
 } // namespace Common

src/common/fixed_point.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2015 Evan Teran
 // SPDX-License-Identifier: MIT
 
@@ -16,6 +19,10 @@
 
 namespace Common {
 
+// No equivalent for "std::arithmetic" in the stdlib
+template <typename T>
+concept IsArithmetic = std::is_arithmetic_v<T>;
+
 template <size_t I, size_t F>
 class FixedPoint;
 
@@ -392,13 +399,13 @@ public: // binary math operators, effects underlying bit pattern since these
         return *this;
     }
 
-    template <IsIntegral Integer>
+    template <std::integral Integer>
     constexpr FixedPoint& operator>>=(Integer n) {
         data_ >>= n;
         return *this;
     }
 
-    template <IsIntegral Integer>
+    template <std::integral Integer>
     constexpr FixedPoint& operator<<=(Integer n) {
         data_ <<= n;
         return *this;
@@ -587,12 +594,12 @@ constexpr FixedPoint<I, F> operator/(Number lhs, FixedPoint<I, F> rhs) {
 }
 
 // shift operators
-template <size_t I, size_t F, IsIntegral Integer>
+template <size_t I, size_t F, std::integral Integer>
 constexpr FixedPoint<I, F> operator<<(FixedPoint<I, F> lhs, Integer rhs) {
     lhs <<= rhs;
     return lhs;
 }
-template <size_t I, size_t F, IsIntegral Integer>
+template <size_t I, size_t F, std::integral Integer>
 constexpr FixedPoint<I, F> operator>>(FixedPoint<I, F> lhs, Integer rhs) {
     lhs >>= rhs;
     return lhs;

src/core/file_sys/fs_path_utility.h

@@ -60,15 +60,15 @@ constexpr bool IsInvalidCharacterImpl(char c) {
 } // namespace impl
 
 constexpr bool IsInvalidCharacter(char c) {
-    return impl::IsInvalidCharacterImpl<InvalidCharacters, Common::Size(InvalidCharacters)>(c);
+    return impl::IsInvalidCharacterImpl<InvalidCharacters, std::size(InvalidCharacters)>(c);
 }
 constexpr bool IsInvalidCharacterForHostName(char c) {
     return impl::IsInvalidCharacterImpl<InvalidCharactersForHostName,
-                                        Common::Size(InvalidCharactersForHostName)>(c);
+                                        std::size(InvalidCharactersForHostName)>(c);
 }
 constexpr bool IsInvalidCharacterForMountName(char c) {
     return impl::IsInvalidCharacterImpl<InvalidCharactersForMountName,
-                                        Common::Size(InvalidCharactersForMountName)>(c);
+                                        std::size(InvalidCharactersForMountName)>(c);
 }
 
 } // namespace StringTraits

src/core/hle/kernel/k_priority_queue.h

@@ -15,7 +15,6 @@
 #include "common/alignment.h"
 #include "common/assert.h"
 #include "common/common_types.h"
-#include "common/concepts.h"
 
 namespace Kernel {
 
@@ -24,7 +23,7 @@ class KThread;
 template <typename T>
 concept KPriorityQueueAffinityMask = !
 std::is_reference_v<T>&& requires(T& t) {
-                             { t.GetAffinityMask() } -> Common::ConvertibleTo<u64>;
+                             { t.GetAffinityMask() } -> std::convertible_to<u64>;
                              { t.SetAffinityMask(0) };
 
                              { t.GetAffinity(0) } -> std::same_as<bool>;
@@ -50,9 +49,9 @@ std::is_reference_v<T>&& requires(T& t) {
                                  std::remove_cvref_t<decltype(t.GetAffinityMask())>()
                                  } -> KPriorityQueueAffinityMask;
 
-                             { t.GetActiveCore() } -> Common::ConvertibleTo<s32>;
-                             { t.GetPriority() } -> Common::ConvertibleTo<s32>;
-                             { t.IsDummyThread() } -> Common::ConvertibleTo<bool>;
+                             { t.GetActiveCore() } -> std::convertible_to<s32>;
+                             { t.GetPriority() } -> std::convertible_to<s32>;
+                             { t.IsDummyThread() } -> std::convertible_to<bool>;
                          };
 
 template <typename Member, size_t NumCores_, int LowestPriority, int HighestPriority>

src/core/hle/service/sm/sm.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -8,8 +11,8 @@
 #include <mutex>
 #include <string>
 #include <unordered_map>
+#include <concepts>
 
-#include "common/concepts.h"
 #include "core/hle/kernel/k_port.h"
 #include "core/hle/kernel/svc.h"
 #include "core/hle/result.h"
@@ -63,7 +66,7 @@ public:
     Result UnregisterService(const std::string& name);
     Result GetServicePort(Kernel::KClientPort** out_client_port, const std::string& name);
 
-    template <Common::DerivedFrom<SessionRequestHandler> T>
+    template <std::derived_from<SessionRequestHandler> T>
     std::shared_ptr<T> GetService(const std::string& service_name, bool block = false) const {
         auto service = registered_services.find(service_name);
         if (service == registered_services.end() && !block) {

src/video_core/gpu_thread.cpp

@@ -23,9 +23,7 @@ namespace VideoCommon::GPUThread {
 static void RunThread(std::stop_token stop_token, Core::System& system,
                       VideoCore::RendererBase& renderer, Core::Frontend::GraphicsContext& context,
                       Tegra::Control::Scheduler& scheduler, SynchState& state) {
-    std::string name = "GPU";
-
-    Common::SetCurrentThreadName(name.c_str());
+    Common::SetCurrentThreadName("GPU");
     Common::SetCurrentThreadPriority(Common::ThreadPriority::Critical);
     system.RegisterHostThread();