1 /* 2 * Copyright (C) 2016 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 <jni.h> 18 #include <stdio.h> 19 20 #include <android-base/logging.h> 21 #include <android-base/macros.h> 22 23 #include "art_method-inl.h" 24 #include "java_vm_ext.h" 25 #include "runtime.h" 26 27 namespace art { 28 29 constexpr jint TEST_900_ENV_VERSION_NUMBER = 0x900FFFFF; 30 constexpr uintptr_t ENV_VALUE = 900; 31 32 // Allow this library to be used as a plugin too so we can test the stack. 33 static jint GetEnvHandler(JavaVMExt* vm ATTRIBUTE_UNUSED, void** new_env, jint version) { 34 printf("%s called in test 900\n", __func__); 35 if (version != TEST_900_ENV_VERSION_NUMBER) { 36 return JNI_EVERSION; 37 } 38 printf("GetEnvHandler called with version 0x%x\n", version); 39 *new_env = reinterpret_cast<void*>(ENV_VALUE); 40 return JNI_OK; 41 } 42 43 extern "C" bool ArtPlugin_Initialize() { 44 printf("%s called in test 900\n", __func__); 45 Runtime::Current()->GetJavaVM()->AddEnvironmentHook(GetEnvHandler); 46 return true; 47 } 48 49 extern "C" bool ArtPlugin_Deinitialize() { 50 printf("%s called in test 900\n", __func__); 51 return true; 52 } 53 54 extern "C" JNIEXPORT jint JNICALL Agent_OnLoad(JavaVM* vm, 55 char* options, 56 void* reserved ATTRIBUTE_UNUSED) { 57 printf("Agent_OnLoad called with options \"%s\"\n", options); 58 if (strcmp("test_900_round_2", options) == 0) { 59 return 0; 60 } 61 uintptr_t env = 0; 62 jint res = vm->GetEnv(reinterpret_cast<void**>(&env), TEST_900_ENV_VERSION_NUMBER); 63 if (res != JNI_OK) { 64 printf("GetEnv(TEST_900_ENV_VERSION_NUMBER) returned non-zero\n"); 65 } 66 printf("GetEnv returned '%" PRIdPTR "' environment!\n", env); 67 return 0; 68 } 69 70 extern "C" JNIEXPORT void JNICALL Agent_OnUnload(JavaVM* vm ATTRIBUTE_UNUSED) { 71 printf("Agent_OnUnload called\n"); 72 } 73 74 } // namespace art 75
