settings: Remove std::chrono usage

Alleviates the dependency on chrono for all files that include settings.h

src/common/settings.h

@@ -7,7 +7,6 @@
 #include <algorithm>
 #include <array>
 #include <atomic>
-#include <chrono>
 #include <map>
 #include <optional>
 #include <string>
@@ -487,9 +486,9 @@ struct Values {
     // System
     Setting<std::optional<u32>> rng_seed{std::optional<u32>(), "rng_seed"};
     // Measured in seconds since epoch
-    std::optional<std::chrono::seconds> custom_rtc;
+    std::optional<s64> custom_rtc;
     // Set on game boot, reset on stop. Seconds difference between current time and `custom_rtc`
-    std::chrono::seconds custom_rtc_differential;
+    s64 custom_rtc_differential;
 
     BasicSetting<s32> current_user{0, "current_user"};
     RangedSetting<s32> language_index{1, 0, 17, "language_index"};

src/core/core.cpp

@@ -196,8 +196,9 @@ struct System::Impl {
         cpu_manager.Initialize();
         core_timing.Initialize([&system]() { system.RegisterHostThread(); });
 
-        const auto current_time = std::chrono::duration_cast<std::chrono::seconds>(
-            std::chrono::system_clock::now().time_since_epoch());
+        const auto posix_time = std::chrono::system_clock::now().time_since_epoch();
+        const auto current_time =
+            std::chrono::duration_cast<std::chrono::seconds>(posix_time).count();
         Settings::values.custom_rtc_differential =
             Settings::values.custom_rtc.value_or(current_time) - current_time;
 

src/core/hle/service/time/time_manager.cpp

@@ -13,18 +13,19 @@
 #include "core/hle/service/time/time_manager.h"
 
 namespace Service::Time {
-
+namespace {
 constexpr Clock::TimeSpanType standard_network_clock_accuracy{0x0009356907420000ULL};
 
-static std::chrono::seconds GetSecondsSinceEpoch() {
-    return std::chrono::duration_cast<std::chrono::seconds>(
-               std::chrono::system_clock::now().time_since_epoch()) +
+s64 GetSecondsSinceEpoch() {
+    const auto time_since_epoch = std::chrono::system_clock::now().time_since_epoch();
+    return std::chrono::duration_cast<std::chrono::seconds>(time_since_epoch).count() +
            Settings::values.custom_rtc_differential;
 }
 
-static s64 GetExternalRtcValue() {
-    return GetSecondsSinceEpoch().count() + TimeManager::GetExternalTimeZoneOffset();
+s64 GetExternalRtcValue() {
+    return GetSecondsSinceEpoch() + TimeManager::GetExternalTimeZoneOffset();
 }
+} // Anonymous namespace
 
 struct TimeManager::Impl final {
     explicit Impl(Core::System& system)

src/video_core/renderer_opengl/gl_device.cpp

@@ -10,6 +10,7 @@
 #include <limits>
 #include <optional>
 #include <span>
+#include <stdexcept>
 #include <vector>
 
 #include <glad/glad.h>

src/yuzu/configuration/config.cpp

@@ -918,8 +918,7 @@ void Config::ReadSystemValues() {
         const auto custom_rtc_enabled =
             ReadSetting(QStringLiteral("custom_rtc_enabled"), false).toBool();
         if (custom_rtc_enabled) {
-            Settings::values.custom_rtc =
-                std::chrono::seconds(ReadSetting(QStringLiteral("custom_rtc"), 0).toULongLong());
+            Settings::values.custom_rtc = ReadSetting(QStringLiteral("custom_rtc"), 0).toLongLong();
         } else {
             Settings::values.custom_rtc = std::nullopt;
         }
@@ -1450,9 +1449,7 @@ void Config::SaveSystemValues() {
         WriteSetting(QStringLiteral("custom_rtc_enabled"), Settings::values.custom_rtc.has_value(),
                      false);
         WriteSetting(QStringLiteral("custom_rtc"),
-                     QVariant::fromValue<long long>(
-                         Settings::values.custom_rtc.value_or(std::chrono::seconds{}).count()),
-                     0);
+                     QVariant::fromValue<long long>(Settings::values.custom_rtc.value_or(0)), 0);
     }
 
     WriteGlobalSetting(Settings::values.sound_index);

src/yuzu/configuration/configure_system.cpp

@@ -65,8 +65,7 @@ void ConfigureSystem::SetConfiguration() {
         QStringLiteral("%1")
             .arg(Settings::values.rng_seed.GetValue().value_or(0), 8, 16, QLatin1Char{'0'})
             .toUpper();
-    const auto rtc_time = Settings::values.custom_rtc.value_or(
-        std::chrono::seconds(QDateTime::currentSecsSinceEpoch()));
+    const auto rtc_time = Settings::values.custom_rtc.value_or(QDateTime::currentSecsSinceEpoch());
 
     ui->rng_seed_checkbox->setChecked(Settings::values.rng_seed.GetValue().has_value());
     ui->rng_seed_edit->setEnabled(Settings::values.rng_seed.GetValue().has_value() &&
@@ -75,7 +74,7 @@ void ConfigureSystem::SetConfiguration() {
 
     ui->custom_rtc_checkbox->setChecked(Settings::values.custom_rtc.has_value());
     ui->custom_rtc_edit->setEnabled(Settings::values.custom_rtc.has_value());
-    ui->custom_rtc_edit->setDateTime(QDateTime::fromSecsSinceEpoch(rtc_time.count()));
+    ui->custom_rtc_edit->setDateTime(QDateTime::fromSecsSinceEpoch(rtc_time));
 
     if (Settings::IsConfiguringGlobal()) {
         ui->combo_language->setCurrentIndex(Settings::values.language_index.GetValue());
@@ -108,10 +107,9 @@ void ConfigureSystem::ApplyConfiguration() {
     // to allow in-game time to be fast forwarded
     if (Settings::IsConfiguringGlobal()) {
         if (ui->custom_rtc_checkbox->isChecked()) {
-            Settings::values.custom_rtc =
-                std::chrono::seconds(ui->custom_rtc_edit->dateTime().toSecsSinceEpoch());
+            Settings::values.custom_rtc = ui->custom_rtc_edit->dateTime().toSecsSinceEpoch();
             if (system.IsPoweredOn()) {
-                const s64 posix_time{Settings::values.custom_rtc->count() +
+                const s64 posix_time{*Settings::values.custom_rtc +
                                      Service::Time::TimeManager::GetExternalTimeZoneOffset()};
                 system.GetTimeManager().UpdateLocalSystemClockTime(posix_time);
             }

src/yuzu_cmd/config.cpp

@@ -412,8 +412,7 @@ void Config::ReadValues() {
 
     const auto custom_rtc_enabled = sdl2_config->GetBoolean("System", "custom_rtc_enabled", false);
     if (custom_rtc_enabled) {
-        Settings::values.custom_rtc =
-            std::chrono::seconds(sdl2_config->GetInteger("System", "custom_rtc", 0));
+        Settings::values.custom_rtc = sdl2_config->GetInteger("System", "custom_rtc", 0);
     } else {
         Settings::values.custom_rtc = std::nullopt;
     }