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/*
* 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;
}
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