1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 #include <jni.h> 25 26 // Private interface methods call test 27 JNIEXPORT jint JNICALL 28 Java_PrivateInterfaceMethods_callIntVoid(JNIEnv *env, jclass unused, jobject impl, jstring defining_class_name, 29 jstring method_name, jboolean virtual) { 30 31 // Lookup int method_name() in defining_class_name, and if it exists call impl.method_name() 32 // using a virtual or non-virtual invocation as indicated 33 34 jmethodID m_id = NULL; 35 jclass clazz = NULL; 36 const char* name = NULL; 37 38 name = (*env)->GetStringUTFChars(env, defining_class_name, NULL); 39 if (name == NULL) return -1; 40 clazz = (*env)->FindClass(env, name); 41 (*env)->ReleaseStringUTFChars(env, defining_class_name, name); 42 if ((*env)->ExceptionCheck(env)) return -1; 43 44 name = (*env)->GetStringUTFChars(env, method_name, NULL); 45 if (name == NULL) return -1; 46 m_id = (*env)->GetMethodID(env, clazz, name, "()I"); 47 (*env)->ReleaseStringUTFChars(env, method_name, name); 48 if ((*env)->ExceptionCheck(env)) return -1; 49 50 if (!virtual) 51 return (*env)->CallNonvirtualIntMethod(env, impl, clazz, m_id); 52 else 53 return (*env)->CallIntMethod(env, impl, m_id); 54 }