Handle Gnss Hal service death gracefully

Bug: 37460011
Fixes: 37460011
Test: adb shell
ps -A | grep 'gnss@1.0' | awk '{print $2}' | xargs kill

Change-Id: I6ff675fc198ab709d50637367f0b4648b55b021f
diff --git a/services/core/jni/com_android_server_location_GnssLocationProvider.cpp b/services/core/jni/com_android_server_location_GnssLocationProvider.cpp
index a3a7e1e..288f350 100644
--- a/services/core/jni/com_android_server_location_GnssLocationProvider.cpp
+++ b/services/core/jni/com_android_server_location_GnssLocationProvider.cpp
@@ -64,6 +64,7 @@
 static jmethodID method_reportMeasurementData;
 static jmethodID method_reportNavigationMessages;
 static jmethodID method_reportLocationBatch;
+static jmethodID method_reportGnssServiceDied;
 
 /*
  * Save a pointer to JavaVm to attach/detach threads executing
@@ -120,10 +121,10 @@
 {
     // hidl_death_recipient interface
     virtual void serviceDied(uint64_t cookie, const wp<IBase>& who) override {
-      // TODO(b/37460011): implement a better death recovery mechanism without
-      // crashing system server process as described in go//treble-gnss-death
-      LOG_ALWAYS_FATAL("Abort due to IGNSS hidl service failure,"
-            " restarting system server");
+        ALOGE("IGNSS hidl service failed, trying to recover...");
+
+        JNIEnv* env = android::AndroidRuntime::getJNIEnv();
+        env->CallVoidMethod(mCallbacksObj, method_reportGnssServiceDied);
     }
 };
 
@@ -1177,6 +1178,7 @@
             clazz,
             "reportLocationBatch",
             "([Landroid/location/Location;)V");
+    method_reportGnssServiceDied = env->GetMethodID(clazz, "reportGnssServiceDied", "()V");
 
     /*
      * Save a pointer to JVM.