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