J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2006-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * A minature launcher for use by CustomLauncherTest.sh. It sets |
| 26 | * up the absolute minimal execution environment. |
| 27 | */ |
| 28 | #include <stdlib.h> |
| 29 | #include <strings.h> |
| 30 | #include <dlfcn.h> |
| 31 | |
| 32 | #include "jni.h" |
| 33 | |
| 34 | typedef jint (*create_vm_func)(JavaVM **, void**, void*); |
| 35 | |
| 36 | void *JNU_FindCreateJavaVM(char *vmlibpath) { |
| 37 | void *libVM = dlopen(vmlibpath, RTLD_LAZY); |
| 38 | if (libVM == NULL) { |
| 39 | return NULL; |
| 40 | } |
| 41 | return dlsym(libVM, "JNI_CreateJavaVM"); |
| 42 | } |
| 43 | |
| 44 | #define CP_PROP "-Djava.class.path=" |
| 45 | |
| 46 | int main(int argc, char**argv) { |
| 47 | JNIEnv *env; |
| 48 | JavaVM *jvm; |
| 49 | jint res; |
| 50 | jclass cls; |
| 51 | jmethodID mid; |
| 52 | jstring jstr; |
| 53 | jclass stringClass; |
| 54 | jobjectArray args; |
| 55 | create_vm_func create_vm; |
| 56 | JavaVMInitArgs vm_args; |
| 57 | char* cp_prop; |
| 58 | JavaVMOption options[1]; |
| 59 | |
| 60 | if (argc < 4) { |
| 61 | fprintf(stderr, "Usage: %s jvm-path classpath class\n", argv[0]); |
| 62 | return -1; |
| 63 | } |
| 64 | cp_prop = (char*)malloc(strlen(CP_PROP)+strlen(argv[2]) +1); |
| 65 | sprintf(cp_prop, "%s%s", CP_PROP, argv[2]); |
| 66 | |
| 67 | options[0].optionString = cp_prop; |
| 68 | vm_args.version = 0x00010002; |
| 69 | vm_args.options = options; |
| 70 | vm_args.nOptions = 1; |
| 71 | vm_args.ignoreUnrecognized = JNI_TRUE; |
| 72 | |
| 73 | create_vm = (create_vm_func)JNU_FindCreateJavaVM(argv[1]); |
| 74 | if (create_vm == NULL) { |
| 75 | fprintf(stderr, "can't get address of JNI_CreateJavaVM\n"); |
| 76 | return -1; |
| 77 | } |
| 78 | |
| 79 | res = (*create_vm)(&jvm, (void**)&env, &vm_args); |
| 80 | if (res < 0) { |
| 81 | fprintf(stderr, "Can't create Java VM\n"); |
| 82 | return -1; |
| 83 | } |
| 84 | cls = (*env)->FindClass(env, argv[3]); |
| 85 | if (cls == NULL) { |
| 86 | goto destroy; |
| 87 | } |
| 88 | |
| 89 | mid = (*env)->GetStaticMethodID(env, cls, "main", |
| 90 | "([Ljava/lang/String;)V"); |
| 91 | if (mid == NULL) { |
| 92 | goto destroy; |
| 93 | } |
| 94 | jstr = (*env)->NewStringUTF(env, " from C!"); |
| 95 | if (jstr == NULL) { |
| 96 | goto destroy; |
| 97 | } |
| 98 | stringClass = (*env)->FindClass(env, "java/lang/String"); |
| 99 | args = (*env)->NewObjectArray(env, 1, stringClass, jstr); |
| 100 | if (args == NULL) { |
| 101 | goto destroy; |
| 102 | } |
| 103 | (*env)->CallStaticVoidMethod(env, cls, mid, args); |
| 104 | |
| 105 | destroy: |
| 106 | if ((*env)->ExceptionOccurred(env)) { |
| 107 | (*env)->ExceptionDescribe(env); |
| 108 | } |
| 109 | (*jvm)->DestroyJavaVM(jvm); |
| 110 | |
| 111 | return 0; |
| 112 | } |