Call DeleteLocalRef on callObjectMethod's returned value

CallObjectMethod returns a local reference that's causing memory
leakage. We need to make sure all these local refs are deleted.

Bug: 214967397
Test: manual
Change-Id: I7462bd9293b214d75df5196ae42b4da1da904e1a

services/core/jni/gnss/GnssAntennaInfoCallback.cpp

@@ -226,17 +226,18 @@ jobject GnssAntennaInfoCallback::translateSingleGnssAntennaInfo(
             env->NewObject(class_gnssAntennaInfoBuilder, method_gnssAntennaInfoBuilderCtor);
 
     // Set fields
-    env->CallObjectMethod(gnssAntennaInfoBuilderObject,
-                          method_gnssAntennaInfoBuilderSetCarrierFrequencyMHz,
-                          gnssAntennaInfo.carrierFrequencyMHz);
-    env->CallObjectMethod(gnssAntennaInfoBuilderObject,
-                          method_gnssAntennaInfoBuilderSetPhaseCenterOffset, phaseCenterOffset);
-    env->CallObjectMethod(gnssAntennaInfoBuilderObject,
-                          method_gnssAntennaInfoBuilderSetPhaseCenterVariationCorrections,
-                          phaseCenterVariationCorrections);
-    env->CallObjectMethod(gnssAntennaInfoBuilderObject,
-                          method_gnssAntennaInfoBuilderSetSignalGainCorrections,
-                          signalGainCorrections);
+    callObjectMethodIgnoringResult(env, gnssAntennaInfoBuilderObject,
+                                   method_gnssAntennaInfoBuilderSetCarrierFrequencyMHz,
+                                   gnssAntennaInfo.carrierFrequencyMHz);
+    callObjectMethodIgnoringResult(env, gnssAntennaInfoBuilderObject,
+                                   method_gnssAntennaInfoBuilderSetPhaseCenterOffset,
+                                   phaseCenterOffset);
+    callObjectMethodIgnoringResult(env, gnssAntennaInfoBuilderObject,
+                                   method_gnssAntennaInfoBuilderSetPhaseCenterVariationCorrections,
+                                   phaseCenterVariationCorrections);
+    callObjectMethodIgnoringResult(env, gnssAntennaInfoBuilderObject,
+                                   method_gnssAntennaInfoBuilderSetSignalGainCorrections,
+                                   signalGainCorrections);
 
     // build
     jobject gnssAntennaInfoObject =

services/core/jni/gnss/GnssMeasurementCallback.cpp

@@ -212,13 +212,14 @@ void setMeasurementData(JNIEnv* env, jobject& callbacksObj, jobject clock,
     jobject gnssMeasurementsEventBuilderObject =
             env->NewObject(class_gnssMeasurementsEventBuilder,
                            method_gnssMeasurementsEventBuilderCtor);
-    env->CallObjectMethod(gnssMeasurementsEventBuilderObject,
-                          method_gnssMeasurementsEventBuilderSetClock, clock);
-    env->CallObjectMethod(gnssMeasurementsEventBuilderObject,
-                          method_gnssMeasurementsEventBuilderSetMeasurements, measurementArray);
-    env->CallObjectMethod(gnssMeasurementsEventBuilderObject,
-                          method_gnssMeasurementsEventBuilderSetGnssAutomaticGainControls,
-                          gnssAgcArray);
+    callObjectMethodIgnoringResult(env, gnssMeasurementsEventBuilderObject,
+                                   method_gnssMeasurementsEventBuilderSetClock, clock);
+    callObjectMethodIgnoringResult(env, gnssMeasurementsEventBuilderObject,
+                                   method_gnssMeasurementsEventBuilderSetMeasurements,
+                                   measurementArray);
+    callObjectMethodIgnoringResult(env, gnssMeasurementsEventBuilderObject,
+                                   method_gnssMeasurementsEventBuilderSetGnssAutomaticGainControls,
+                                   gnssAgcArray);
     jobject gnssMeasurementsEventObject =
             env->CallObjectMethod(gnssMeasurementsEventBuilderObject,
                                   method_gnssMeasurementsEventBuilderBuild);
@@ -408,24 +409,24 @@ void GnssMeasurementCallbackAidl::translateSingleGnssMeasurement(JNIEnv* env,
                                        satellitePvt.satClockInfo.satHardwareCodeBiasMeters,
                                        satellitePvt.satClockInfo.satTimeCorrectionMeters,
                                        satellitePvt.satClockInfo.satClkDriftMps);
-            env->CallObjectMethod(satellitePvtBuilderObject,
-                                  method_satellitePvtBuilderSetPositionEcef, positionEcef);
-            env->CallObjectMethod(satellitePvtBuilderObject,
-                                  method_satellitePvtBuilderSetVelocityEcef, velocityEcef);
-            env->CallObjectMethod(satellitePvtBuilderObject, method_satellitePvtBuilderSetClockInfo,
-                                  clockInfo);
+            callObjectMethodIgnoringResult(env, satellitePvtBuilderObject,
+                                           method_satellitePvtBuilderSetPositionEcef, positionEcef);
+            callObjectMethodIgnoringResult(env, satellitePvtBuilderObject,
+                                           method_satellitePvtBuilderSetVelocityEcef, velocityEcef);
+            callObjectMethodIgnoringResult(env, satellitePvtBuilderObject,
+                                           method_satellitePvtBuilderSetClockInfo, clockInfo);
         }
 
         if (satFlags & SatellitePvt::HAS_IONO) {
-            env->CallObjectMethod(satellitePvtBuilderObject,
-                                  method_satellitePvtBuilderSetIonoDelayMeters,
-                                  satellitePvt.ionoDelayMeters);
+            callObjectMethodIgnoringResult(env, satellitePvtBuilderObject,
+                                           method_satellitePvtBuilderSetIonoDelayMeters,
+                                           satellitePvt.ionoDelayMeters);
         }
 
         if (satFlags & SatellitePvt::HAS_TROPO) {
-            env->CallObjectMethod(satellitePvtBuilderObject,
-                                  method_satellitePvtBuilderSetTropoDelayMeters,
-                                  satellitePvt.tropoDelayMeters);
+            callObjectMethodIgnoringResult(env, satellitePvtBuilderObject,
+                                           method_satellitePvtBuilderSetTropoDelayMeters,
+                                           satellitePvt.tropoDelayMeters);
         }
 
         jobject satellitePvtObject =
@@ -453,17 +454,19 @@ void GnssMeasurementCallbackAidl::translateSingleGnssMeasurement(JNIEnv* env,
             jobject correlationVectorBuilderObject =
                     env->NewObject(class_correlationVectorBuilder,
                                    method_correlationVectorBuilderCtor);
-            env->CallObjectMethod(correlationVectorBuilderObject,
-                                  method_correlationVectorBuilderSetMagnitude, magnitudeArray);
-            env->CallObjectMethod(correlationVectorBuilderObject,
-                                  method_correlationVectorBuilderSetFrequencyOffsetMetersPerSecond,
-                                  correlationVector.frequencyOffsetMps);
-            env->CallObjectMethod(correlationVectorBuilderObject,
-                                  method_correlationVectorBuilderSetSamplingStartMeters,
-                                  correlationVector.samplingStartM);
-            env->CallObjectMethod(correlationVectorBuilderObject,
-                                  method_correlationVectorBuilderSetSamplingWidthMeters,
-                                  correlationVector.samplingWidthM);
+            callObjectMethodIgnoringResult(env, correlationVectorBuilderObject,
+                                           method_correlationVectorBuilderSetMagnitude,
+                                           magnitudeArray);
+            callObjectMethodIgnoringResult(
+                    env, correlationVectorBuilderObject,
+                    method_correlationVectorBuilderSetFrequencyOffsetMetersPerSecond,
+                    correlationVector.frequencyOffsetMps);
+            callObjectMethodIgnoringResult(env, correlationVectorBuilderObject,
+                                           method_correlationVectorBuilderSetSamplingStartMeters,
+                                           correlationVector.samplingStartM);
+            callObjectMethodIgnoringResult(env, correlationVectorBuilderObject,
+                                           method_correlationVectorBuilderSetSamplingWidthMeters,
+                                           correlationVector.samplingWidthM);
             jobject correlationVectorObject =
                     env->CallObjectMethod(correlationVectorBuilderObject,
                                           method_correlationVectorBuilderBuild);
@@ -519,12 +522,14 @@ jobjectArray GnssMeasurementCallbackAidl::translateAllGnssAgcs(JNIEnv* env,
         const GnssAgc& gnssAgc = agcs[i];
 
         jobject agcBuilderObject = env->NewObject(class_gnssAgcBuilder, method_gnssAgcBuilderCtor);
-        env->CallObjectMethod(agcBuilderObject, method_gnssAgcBuilderSetLevelDb,
-                              gnssAgc.agcLevelDb);
-        env->CallObjectMethod(agcBuilderObject, method_gnssAgcBuilderSetConstellationType,
-                              (int)gnssAgc.constellation);
-        env->CallObjectMethod(agcBuilderObject, method_gnssAgcBuilderSetCarrierFrequencyHz,
-                              gnssAgc.carrierFrequencyHz);
+        callObjectMethodIgnoringResult(env, agcBuilderObject, method_gnssAgcBuilderSetLevelDb,
+                                       gnssAgc.agcLevelDb);
+        callObjectMethodIgnoringResult(env, agcBuilderObject,
+                                       method_gnssAgcBuilderSetConstellationType,
+                                       (int)gnssAgc.constellation);
+        callObjectMethodIgnoringResult(env, agcBuilderObject,
+                                       method_gnssAgcBuilderSetCarrierFrequencyHz,
+                                       gnssAgc.carrierFrequencyHz);
         jobject agcObject = env->CallObjectMethod(agcBuilderObject, method_gnssAgcBuilderBuild);
 
         env->SetObjectArrayElement(gnssAgcArray, i, agcObject);

services/core/jni/gnss/Utils.cpp

@@ -111,6 +111,13 @@ void checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) {
     }
 }
 
+void callObjectMethodIgnoringResult(JNIEnv* env, jobject obj, jmethodID mid, ...) {
+    va_list args;
+    va_start(args, mid);
+    env->DeleteLocalRef(env->CallObjectMethodV(obj, mid, args));
+    va_end(args);
+}
+
 JavaObject::JavaObject(JNIEnv* env, jclass clazz, jmethodID defaultCtor)
       : env_(env), clazz_(clazz) {
     object_ = env_->NewObject(clazz_, defaultCtor);

services/core/jni/gnss/Utils.h

@@ -56,6 +56,8 @@ jboolean checkAidlStatus(const android::binder::Status& status, const char* erro
 
 void checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName);
 
+void callObjectMethodIgnoringResult(JNIEnv* env, jobject obj, jmethodID mid, ...);
+
 template <class T>
 void logHidlError(hardware::Return<T>& result, const char* errorMessage) {
     ALOGE("%s HIDL transport error: %s", errorMessage, result.description().c_str());