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