Fix render thread CPU affinity lost on app resumed from background (#4588)

Solves https://mapbox.atlassian.net/browse/MAPSAND-2213:
> We lose CPU affinity when the activity goes to the background and
returns, or when another activity comes to the foreground.

cc @mapbox/core-sdk
cc @mapbox/gl-native
cc @mapbox/maps-android

---------

Co-authored-by: Changelog autocreator bot <[email protected]>
GitOrigin-RevId: 2d5343bbb5a6a8d7ec04626e91ed06a874b47601

Author: 2 people

maps-sdk/src/main/java/com/mapbox/maps/NativeMapImpl.kt

@@ -76,6 +76,12 @@ internal class NativeMapImpl(val map: Map) {
     map.render()
   }
 
+  @OptIn(com.mapbox.annotation.MapboxExperimental::class)
+  @MapboxExperimental
+  fun resetThreadServiceType() {
+    map.resetThreadServiceType()
+  }
+
   fun setCamera(cameraOptions: CameraOptions) {
     map.setCamera(cameraOptions)
   }

maps-sdk/src/main/java/com/mapbox/maps/renderer/MapboxRenderThread.kt

@@ -224,6 +224,16 @@ internal class MapboxRenderThread : Choreographer.FrameCallback {
     )
   }
 
+  /**
+   * Resets the renderer thread service type to Interactive.
+   * Must be called on the render thread.
+   */
+  @OptIn(MapboxExperimental::class)
+  @RenderThread
+  private fun resetThreadServiceType() {
+    mapboxRenderer.resetThreadServiceType()
+  }
+
   private fun setUpRenderThread(creatingSurface: Boolean): Boolean {
     surfaceProcessingLock.withLock {
       try {
@@ -717,6 +727,7 @@ internal class MapboxRenderThread : Choreographer.FrameCallback {
   fun resume() {
     paused = false
     logI(TAG, "Renderer resumed, renderThreadPrepared=$renderThreadPrepared, surface.isValid=${surface?.isValid}")
+    postNonRenderEvent(RenderEvent(::resetThreadServiceType, false))
     // schedule render if we resume not after first create (e.g. bring map back to front)
     renderPreparedGuardedRun(::postPrepareRenderFrame)
   }

maps-sdk/src/main/java/com/mapbox/maps/renderer/MapboxRenderer.kt

@@ -3,11 +3,20 @@ package com.mapbox.maps.renderer
 import android.graphics.Bitmap
 import android.graphics.Matrix
 import android.opengl.GLES20
-import androidx.annotation.*
+import androidx.annotation.AnyThread
+import androidx.annotation.MainThread
+import androidx.annotation.UiThread
+import androidx.annotation.VisibleForTesting
 import com.mapbox.common.Cancelable
-import com.mapbox.maps.*
+import com.mapbox.maps.DelegatingMapClient
 import com.mapbox.maps.MapView.OnSnapshotReady
+import com.mapbox.maps.MapboxExperimental
+import com.mapbox.maps.NativeMapImpl
+import com.mapbox.maps.RenderFrameFinishedCallback
+import com.mapbox.maps.RenderModeType
 import com.mapbox.maps.Size
+import com.mapbox.maps.logE
+import com.mapbox.maps.logW
 import com.mapbox.maps.renderer.gl.PixelReader
 import java.util.concurrent.TimeUnit
 import java.util.concurrent.atomic.AtomicBoolean
@@ -113,6 +122,16 @@ internal abstract class MapboxRenderer(mapName: String) : DelegatingMapClient {
     map?.render()
   }
 
+  /**
+   * Resets the renderer thread service type to Interactive.
+   * Must be called on the render thread.
+   */
+  @MapboxExperimental
+  @RenderThread
+  fun resetThreadServiceType() {
+    map?.resetThreadServiceType()
+  }
+
   @UiThread
   fun onStop() {
     renderThread.pause()