1 /* 2 * Copyright (c) 2015, 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 #include <stdio.h> 27 #include <jni.h> 28 #include "jni_util.h" 29 #include "jvm.h" 30 #include "management_ext.h" 31 32 #define ERR_MSG_SIZE 128 33 34 const JmmInterface* jmm_interface = NULL; 35 JavaVM* jvm = NULL; 36 jint jmm_version = 0; 37 38 JNIEXPORT jint JNICALL 39 DEF_JNI_OnLoad(JavaVM *vm, void *reserved) { 40 JNIEnv* env; 41 42 jvm = vm; 43 if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_2) != JNI_OK) { 44 return JNI_ERR; 45 } 46 47 jmm_interface = (JmmInterface*) JVM_GetManagement(JMM_VERSION_1_0); 48 if (jmm_interface == NULL) { 49 JNU_ThrowInternalError(env, "Unsupported Management version"); 50 return JNI_ERR; 51 } 52 53 jmm_version = jmm_interface->GetVersion(env); 54 return (*env)->GetVersion(env); 55 } 56 57 void throw_internal_error(JNIEnv* env, const char* msg) { 58 char errmsg[128]; 59 60 sprintf(errmsg, "errno: %d error: %s\n", errno, msg); 61 JNU_ThrowInternalError(env, errmsg); 62 }