Merge "Cache Setting values" (23f498b9) · Commits · e / os / android_frameworks_opt_telephony

src/java/com/android/internal/telephony/SubscriptionController.java

+23 −0

Original line number	Diff line number	Diff line
		@@ -213,6 +213,9 @@ public class SubscriptionController extends ISub.Stub {
		// clear SLOT_INDEX for all subs
		clearSlotIndexForSubInfoRecords();

		// Cache Setting values
		cacheSettingValues();

		if (DBG) logdl("[SubscriptionController] init by Context");
		}

		@@ -248,6 +251,26 @@ public class SubscriptionController extends ISub.Stub {
		mContext.getContentResolver().update(SubscriptionManager.CONTENT_URI, value, null, null);
		}

		/**
		* Cache the Settings values by reading these values from Setting from disk to prevent disk I/O
		* access during the API calling. This is based on an assumption that the Settings system will
		* itself cache this value after the first read and thus only the first read after boot will
		* access the disk.
		*/
		private void cacheSettingValues() {
		Settings.Global.getInt(mContext.getContentResolver(),
		Settings.Global.MULTI_SIM_SMS_SUBSCRIPTION,
		SubscriptionManager.INVALID_SUBSCRIPTION_ID);

		Settings.Global.getInt(mContext.getContentResolver(),
		Settings.Global.MULTI_SIM_VOICE_CALL_SUBSCRIPTION,
		SubscriptionManager.INVALID_SUBSCRIPTION_ID);

		Settings.Global.getInt(mContext.getContentResolver(),
		Settings.Global.MULTI_SIM_DATA_CALL_SUBSCRIPTION,
		SubscriptionManager.INVALID_SUBSCRIPTION_ID);
		}

		@UnsupportedAppUsage
		protected void enforceModifyPhoneState(String message) {
		mContext.enforceCallingOrSelfPermission(