| /* |
| * Copyright (c) 2006, 2007, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * A minature launcher for use by CustomLauncherTest.sh. It sets |
| * up the absolute minimal execution environment. |
| */ |
| #include <stdlib.h> |
| #include <strings.h> |
| #include <dlfcn.h> |
| |
| #include "jni.h" |
| |
| typedef jint (*create_vm_func)(JavaVM **, void**, void*); |
| |
| void *JNU_FindCreateJavaVM(char *vmlibpath) { |
| void *libVM = dlopen(vmlibpath, RTLD_LAZY); |
| if (libVM == NULL) { |
| return NULL; |
| } |
| return dlsym(libVM, "JNI_CreateJavaVM"); |
| } |
| |
| #define CP_PROP "-Djava.class.path=" |
| |
| int main(int argc, char**argv) { |
| JNIEnv *env; |
| JavaVM *jvm; |
| jint res; |
| jclass cls; |
| jmethodID mid; |
| jstring jstr; |
| jclass stringClass; |
| jobjectArray args; |
| create_vm_func create_vm; |
| JavaVMInitArgs vm_args; |
| char* cp_prop; |
| JavaVMOption options[1]; |
| |
| if (argc < 4) { |
| fprintf(stderr, "Usage: %s jvm-path classpath class\n", argv[0]); |
| return -1; |
| } |
| cp_prop = (char*)malloc(strlen(CP_PROP)+strlen(argv[2]) +1); |
| sprintf(cp_prop, "%s%s", CP_PROP, argv[2]); |
| |
| options[0].optionString = cp_prop; |
| vm_args.version = 0x00010002; |
| vm_args.options = options; |
| vm_args.nOptions = 1; |
| vm_args.ignoreUnrecognized = JNI_TRUE; |
| |
| create_vm = (create_vm_func)JNU_FindCreateJavaVM(argv[1]); |
| if (create_vm == NULL) { |
| fprintf(stderr, "can't get address of JNI_CreateJavaVM\n"); |
| return -1; |
| } |
| |
| res = (*create_vm)(&jvm, (void**)&env, &vm_args); |
| if (res < 0) { |
| fprintf(stderr, "Can't create Java VM\n"); |
| return -1; |
| } |
| cls = (*env)->FindClass(env, argv[3]); |
| if (cls == NULL) { |
| goto destroy; |
| } |
| |
| mid = (*env)->GetStaticMethodID(env, cls, "main", |
| "([Ljava/lang/String;)V"); |
| if (mid == NULL) { |
| goto destroy; |
| } |
| jstr = (*env)->NewStringUTF(env, " from C!"); |
| if (jstr == NULL) { |
| goto destroy; |
| } |
| stringClass = (*env)->FindClass(env, "java/lang/String"); |
| args = (*env)->NewObjectArray(env, 1, stringClass, jstr); |
| if (args == NULL) { |
| goto destroy; |
| } |
| (*env)->CallStaticVoidMethod(env, cls, mid, args); |
| |
| destroy: |
| if ((*env)->ExceptionOccurred(env)) { |
| (*env)->ExceptionDescribe(env); |
| } |
| (*jvm)->DestroyJavaVM(jvm); |
| |
| return 0; |
| } |