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.

1 files changed, 21 insertions, 9 deletions

diff --git a/Source/Android/jni/MainAndroid.cpp b/Source/Android/jni/MainAndroid.cpp
index f74ae67788..f4692af117 100644
--- a/Source/Android/jni/MainAndroid.cpp
+++ b/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(
@@ -404,7 +416,7 @@ JNIEXPORT void JNICALL Java_org_dolphinemu_dolphinemu_NativeLibrary_SetProfileSe
     ini.GetOrCreateSection(section)->Delete(key);
   }
 
-  ini.Save(File::GetUserPath(D_CONFIG_IDX)  + "Profiles/Wiimote/" + profile + ".ini");
+  ini.Save(File::GetUserPath(D_CONFIG_IDX) + "Profiles/Wiimote/" + profile + ".ini");
 }
 
 JNIEXPORT jstring JNICALL Java_org_dolphinemu_dolphinemu_NativeLibrary_GetConfig(