1 /* 2 * Copyright (C) 2020 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "base/time_utils.h" 18 #include "base/utils.h" 19 #include "jni/jni_env_ext.h" 20 #include "jni/jni_internal.h" 21 22 #include "jni.h" 23 24 #include <stdio.h> 25 26 namespace art { 27 MaybePrintTime()28static void MaybePrintTime() { 29 constexpr bool kPrintTime = false; 30 if (kPrintTime) { 31 printf("At %u msecs:", static_cast<int>(MilliTime())); 32 } 33 } 34 35 Java_Main_monitorShutdown(JNIEnv * env,jclass klass ATTRIBUTE_UNUSED)36extern "C" [[noreturn]] JNIEXPORT void JNICALL Java_Main_monitorShutdown( 37 JNIEnv* env, jclass klass ATTRIBUTE_UNUSED) { 38 bool found_shutdown = false; 39 bool found_runtime_deleted = false; 40 JNIEnvExt* const extEnv = down_cast<JNIEnvExt*>(env); 41 while (true) { 42 if (!found_shutdown && env->functions == GetRuntimeShutdownNativeInterface()) { 43 found_shutdown = true; 44 MaybePrintTime(); 45 printf("Saw RuntimeShutdownFunctions\n"); 46 fflush(stdout); 47 } 48 if (!found_runtime_deleted && extEnv->IsRuntimeDeleted()) { 49 found_runtime_deleted = true; 50 MaybePrintTime(); 51 printf("Saw RuntimeDeleted\n"); 52 fflush(stdout); 53 } 54 if (found_shutdown && found_runtime_deleted) { 55 // All JNI calls should now get rerouted to SleepForever(); 56 (void) env->NewByteArray(17); 57 printf("Unexpectedly returned from JNI call\n"); 58 fflush(stdout); 59 SleepForever(); 60 } 61 } 62 } 63 64 } // namespace art 65 66 67