1 /* 2 * Copyright (C) 2017 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 <stdio.h> 18 19 #include "android-base/macros.h" 20 #include "jni.h" 21 #include "jvmti.h" 22 #include "scoped_utf_chars.h" 23 24 // Test infrastructure 25 #include "jni_helper.h" 26 #include "jvmti_helper.h" 27 #include "test_env.h" 28 29 namespace art { 30 namespace Test922Properties { 31 32 extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Test922_getSystemProperties( 33 JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED) { 34 jint count; 35 char** properties; 36 jvmtiError result = jvmti_env->GetSystemProperties(&count, &properties); 37 if (JvmtiErrorToException(env, jvmti_env, result)) { 38 return nullptr; 39 } 40 41 auto callback = [&](jint i) -> jstring { 42 char* data = properties[i]; 43 if (data == nullptr) { 44 return nullptr; 45 } 46 jstring ret = env->NewStringUTF(data); 47 jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(data)); 48 return ret; 49 }; 50 jobjectArray ret = CreateObjectArray(env, count, "java/lang/String", callback); 51 52 jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(properties)); 53 54 return ret; 55 } 56 57 extern "C" JNIEXPORT jstring JNICALL Java_art_Test922_getSystemProperty( 58 JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jstring key) { 59 ScopedUtfChars string(env, key); 60 if (string.c_str() == nullptr) { 61 return nullptr; 62 } 63 64 char* value = nullptr; 65 jvmtiError result = jvmti_env->GetSystemProperty(string.c_str(), &value); 66 if (JvmtiErrorToException(env, jvmti_env, result)) { 67 return nullptr; 68 } 69 70 jstring ret = (value == nullptr) ? nullptr : env->NewStringUTF(value); 71 72 jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(value)); 73 74 return ret; 75 } 76 77 extern "C" JNIEXPORT void JNICALL Java_art_Test922_setSystemProperty( 78 JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jstring key, jstring value) { 79 ScopedUtfChars key_string(env, key); 80 if (key_string.c_str() == nullptr) { 81 return; 82 } 83 ScopedUtfChars value_string(env, value); 84 if (value_string.c_str() == nullptr) { 85 return; 86 } 87 88 jvmtiError result = jvmti_env->SetSystemProperty(key_string.c_str(), value_string.c_str()); 89 if (JvmtiErrorToException(env, jvmti_env, result)) { 90 return; 91 } 92 } 93 94 } // namespace Test922Properties 95 } // namespace art 96
