Fix app non responsive

changelog.d/8454.bugfix

@@ -0,0 +1 @@
+Fix several performance issues causing app non responsive issues.

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/read/SetReadMarkersTask.kt

@@ -18,6 +18,8 @@ package org.matrix.android.sdk.internal.session.room.read
 
 import com.zhuinden.monarchy.Monarchy
 import io.realm.Realm
+import kotlinx.coroutines.withContext
+import org.matrix.android.sdk.api.MatrixCoroutineDispatchers
 import org.matrix.android.sdk.api.session.events.model.LocalEcho
 import org.matrix.android.sdk.api.session.homeserver.HomeServerCapabilitiesService
 import org.matrix.android.sdk.internal.database.model.RoomSummaryEntity
@@ -64,9 +66,10 @@ internal class DefaultSetReadMarkersTask @Inject constructor(
         private val globalErrorReceiver: GlobalErrorReceiver,
         private val clock: Clock,
         private val homeServerCapabilitiesService: HomeServerCapabilitiesService,
+        private val coroutineDispatchers: MatrixCoroutineDispatchers,
 ) : SetReadMarkersTask {
 
-    override suspend fun execute(params: SetReadMarkersTask.Params) {
+    override suspend fun execute(params: SetReadMarkersTask.Params) = withContext(coroutineDispatchers.io) {
         val markers = mutableMapOf<String, String>()
         Timber.v("Execute set read marker with params: $params")
         val latestSyncedEventId = latestSyncedEventId(params.roomId)

vector/src/main/java/im/vector/app/core/session/clientinfo/DeleteUnusedClientInformationUseCase.kt

@@ -17,6 +17,7 @@
 package im.vector.app.core.session.clientinfo
 
 import im.vector.app.core.di.ActiveSessionHolder
+import kotlinx.coroutines.withContext
 import org.matrix.android.sdk.api.session.crypto.model.DeviceInfo
 import javax.inject.Inject
 
@@ -27,7 +28,9 @@ class DeleteUnusedClientInformationUseCase @Inject constructor(
     suspend fun execute(deviceInfoList: List<DeviceInfo>): Result<Unit> = runCatching {
         // A defensive approach against local storage reports an empty device list (although it is not a seen situation).
         if (deviceInfoList.isEmpty()) return Result.success(Unit)
-
+        val dispatcher = activeSessionHolder.getSafeActiveSession()?.coroutineDispatchers?.io
+                ?: return@runCatching
+        withContext(dispatcher) {
             val expectedClientInfoKeyList = deviceInfoList.map { MATRIX_CLIENT_INFO_KEY_PREFIX + it.deviceId }
             activeSessionHolder
                     .getSafeActiveSession()
@@ -40,3 +43,4 @@ class DeleteUnusedClientInformationUseCase @Inject constructor(
                     }
         }
     }
+}

vector/src/main/java/im/vector/app/features/home/room/list/RoomListViewModel.kt

@@ -322,11 +322,10 @@ class RoomListViewModel @AssistedInject constructor(
     }
 
     private fun handleDeleteLocalRooms() {
+        viewModelScope.launch(session.coroutineDispatchers.io) {
             val localRoomIds = session.roomService()
                     .getRoomSummaries(roomSummaryQueryParams { roomId = QueryStringValue.Contains(RoomLocalEcho.PREFIX) })
                     .map { it.roomId }
-
-        viewModelScope.launch {
             localRoomIds.forEach {
                 session.roomService().deleteLocalRoom(it)
             }

vector/src/main/java/im/vector/app/features/notifications/NotificationDrawerManager.kt

@@ -24,7 +24,9 @@ import im.vector.app.R
 import im.vector.app.core.resources.BuildMeta
 import im.vector.app.core.utils.FirstThrottler
 import im.vector.app.features.displayname.getBestName
+import im.vector.app.features.session.coroutineScope
 import im.vector.app.features.settings.VectorPreferences
+import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.content.ContentUrlResolver
 import org.matrix.android.sdk.api.session.getUserOrDefault
@@ -121,6 +123,9 @@ class NotificationDrawerManager @Inject constructor(
      * Used to ignore events related to that room (no need to display notification) and clean any existing notification on this room.
      */
     fun setCurrentRoom(roomId: String?) {
+        val dispatcher = currentSession?.coroutineDispatchers?.io ?: return
+        val scope = currentSession?.coroutineScope ?: return
+        scope.launch(dispatcher) {
             updateEvents {
                 val hasChanged = roomId != currentRoomId
                 currentRoomId = roomId
@@ -129,12 +134,16 @@ class NotificationDrawerManager @Inject constructor(
                 }
             }
         }
+    }
 
     /**
      * Should be called when the application is currently opened and showing timeline for the given threadId.
      * Used to ignore events related to that thread (no need to display notification) and clean any existing notification on this room.
      */
     fun setCurrentThread(threadId: String?) {
+        val dispatcher = currentSession?.coroutineDispatchers?.io ?: return
+        val scope = currentSession?.coroutineScope ?: return
+        scope.launch(dispatcher) {
             updateEvents {
                 val hasChanged = threadId != currentThreadId
                 currentThreadId = threadId
@@ -145,6 +154,7 @@ class NotificationDrawerManager @Inject constructor(
                 }
             }
         }
+    }
 
     fun notificationStyleChanged() {
         updateEvents {