1 /* 2 * Copyright (c) 2018, 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 25 #include "jni.h" 26 #include "stdio.h" 27 #include "stdlib.h" 28 29 int main(int argc, char** args) { 30 JavaVMInitArgs vm_args; 31 JNIEnv *env; 32 JavaVM *vm; 33 int i =0; 34 jint result; 35 36 vm_args.version = JNI_VERSION_1_2; 37 vm_args.ignoreUnrecognized = JNI_FALSE; 38 39 JavaVMOption option1[2]; 40 option1[0].optionString="-XX:+PrintCommandLineFlags"; 41 option1[1].optionString="-Xrs"; 42 43 vm_args.options=option1; 44 vm_args.nOptions=2; 45 46 // Print the VM options in use 47 printf("initVM: numOptions = %d\n", vm_args.nOptions); 48 for (i = 0; i < vm_args.nOptions; i++) 49 { 50 printf("\tvm_args.options[%d].optionString = %s\n", i, vm_args.options[i].optionString); 51 } 52 53 // Initialize VM with given options 54 result = JNI_CreateJavaVM( &vm, (void **) &env, &vm_args ); 55 if (result != 0) { 56 printf("ERROR: cannot create JAVA VM.\n"); 57 exit(-1); 58 } 59 60 (*vm)->DestroyJavaVM(vm); 61 } 62