Android: Speed up game settings saving

Previously would take several seconds to save, sometimes causing ANRs, which
was made worse when adding all the controller values. Now we only load/save
each section instead of doing it for each setting. Also added a method
to save an individual setting.

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/NativeLibrary.java

@@ -244,6 +244,10 @@ public final class NativeLibrary
     Rumble.checkRumble(padID, state);
   }
 
+  public static native void LoadGameIniFile(String gameId);
+
+  public static native void SaveGameIniFile(String gameId);
+
   public static native String GetUserSetting(String gameID, String Section, String Key);
 
   public static native void SetUserSetting(String gameID, String Section, String Key, String Value);

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/utils/SettingsFile.java

@@ -443,13 +443,27 @@ public final class SettingsFile
       HashMap<String, Setting> settings = section.getSettings();
       Set<String> sortedKeySet = new TreeSet<>(settings.keySet());
 
+      // Profile options(wii extension) are not saved, only used to properly display values
+      if (sectionKey.contains(Settings.SECTION_PROFILE))
+      {
+        continue;
+      }
+      else
+      {
+        NativeLibrary.LoadGameIniFile(gameId);
+      }
       for (String settingKey : sortedKeySet)
       {
         Setting setting = settings.get(settingKey);
         // Special case. Extension gets saved into a controller profile
         if (settingKey.contains(SettingsFile.KEY_WIIMOTE_EXTENSION))
         {
-          saveCustomWiimoteSetting(gameId, setting);
+          String padId =
+                  setting.getKey()
+                          .substring(setting.getKey().length() - 1, setting.getKey().length());
+
+          saveCustomWiimoteSetting(gameId, KEY_WIIMOTE_EXTENSION, setting.getValueAsString(),
+                  padId);
         }
         else
         {
@@ -457,30 +471,42 @@ public final class SettingsFile
                   setting.getKey(), setting.getValueAsString());
         }
       }
+      NativeLibrary.SaveGameIniFile(gameId);
     }
   }
 
+  public static void saveSingleCustomSetting(final String gameId, final String section,
+          final String key,
+          final String value)
+  {
+    NativeLibrary.LoadGameIniFile(gameId);
+    NativeLibrary.SetUserSetting(gameId, section,
+            key, value);
+    NativeLibrary.SaveGameIniFile(gameId);
+  }
+
   /**
-   * Saves the extension value in a profile and enables that profile. Extension is the only
+   * Saves the wiimote setting in a profile and enables that profile.
-   * controller setting that is not saved in the main config.
    *
    * @param gameId
-   * @param setting
+   * @param key
+   * @param value
+   * @param padId
    */
-  public static void saveCustomWiimoteSetting(final String gameId, final Setting setting)
+  public static void saveCustomWiimoteSetting(final String gameId, final String key,
+          final String value,
+          final String padId)
   {
-    if (setting.getSection().equals(Settings.SECTION_PROFILE))
-      return;
-    String padId =
-            setting.getKey().substring(setting.getKey().length() - 1, setting.getKey().length());
     String profile = gameId + "_Wii" + padId;
 
-    NativeLibrary.SetProfileSetting(profile, Settings.SECTION_PROFILE, KEY_WIIMOTE_EXTENSION,
+    NativeLibrary.SetProfileSetting(profile, Settings.SECTION_PROFILE, key,
-            setting.getValueAsString());
+            value);
 
     // Enable the profile
+    NativeLibrary.LoadGameIniFile(gameId);
     NativeLibrary.SetUserSetting(gameId, Settings.SECTION_CONTROLS,
             KEY_WIIMOTE_PROFILE + (Integer.valueOf(padId) + 1), profile);
+    NativeLibrary.SaveGameIniFile(gameId);
   }
 
   private static String mapSectionNameFromIni(String generalSectionName)

Source/Android/jni/MainAndroid.cpp

@@ -3,6 +3,7 @@
 // Refer to the license.txt file included.
 
 #include <EGL/egl.h>
+#include <UICommon/GameFile.h>
 #include <android/log.h>
 #include <android/native_window_jni.h>
 #include <cinttypes>
@@ -15,7 +16,6 @@
 #include <string>
 #include <thread>
 #include <utility>
-#include <UICommon/GameFile.h>
 
 #include "Common/AndroidAnalytics.h"
 #include "Common/CPUDetect.h"
@@ -61,6 +61,7 @@ namespace
 static constexpr char DOLPHIN_TAG[] = "DolphinEmuNative";
 
 ANativeWindow* s_surf;
+IniFile s_ini;
 
 // The Core only supports using a single Host thread.
 // If multiple threads want to call host functions then they need to queue
@@ -361,27 +362,38 @@ JNIEXPORT jstring JNICALL Java_org_dolphinemu_dolphinemu_NativeLibrary_GetUserSe
   return ToJString(env, value.c_str());
 }
 
+JNIEXPORT void JNICALL Java_org_dolphinemu_dolphinemu_NativeLibrary_LoadGameIniFile(JNIEnv* env,
+                                                                                    jobject obj,
+                                                                                    jstring jGameID)
+{
+  std::string gameid = GetJString(env, jGameID);
+  s_ini.Load(File::GetUserPath(D_GAMESETTINGS_IDX) + gameid + ".ini");
+}
+
+JNIEXPORT void JNICALL Java_org_dolphinemu_dolphinemu_NativeLibrary_SaveGameIniFile(JNIEnv* env,
+                                                                                    jobject obj,
+                                                                                    jstring jGameID)
+{
+  std::string gameid = GetJString(env, jGameID);
+  s_ini.Save(File::GetUserPath(D_GAMESETTINGS_IDX) + gameid + ".ini");
+}
+
 JNIEXPORT void JNICALL Java_org_dolphinemu_dolphinemu_NativeLibrary_SetUserSetting(
     JNIEnv* env, jobject obj, jstring jGameID, jstring jSection, jstring jKey, jstring jValue)
 {
-  IniFile ini;
   std::string gameid = GetJString(env, jGameID);
   std::string section = GetJString(env, jSection);
   std::string key = GetJString(env, jKey);
   std::string val = GetJString(env, jValue);
 
-  ini.Load(File::GetUserPath(D_GAMESETTINGS_IDX) + gameid + ".ini");
-
   if (val != "-1")
   {
-    ini.GetOrCreateSection(section)->Set(key, val);
+    s_ini.GetOrCreateSection(section)->Set(key, val);
   }
   else
   {
-    ini.GetOrCreateSection(section)->Delete(key);
+    s_ini.GetOrCreateSection(section)->Delete(key);
   }
-
-  ini.Save(File::GetUserPath(D_GAMESETTINGS_IDX) + gameid + ".ini");
 }
 
 JNIEXPORT void JNICALL Java_org_dolphinemu_dolphinemu_NativeLibrary_SetProfileSetting(