1 /*
   2  * Copyright (c) 2004, 2014, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #include <string.h>
  27 
  28 #include "jni.h"
  29 #include "jni_util.h"
  30 #include "jlong.h"
  31 #include "jvm.h"
  32 #include "jdk_util.h"
  33 
  34 #include "sun_misc_VM.h"
  35 
  36 JNIEXPORT jobject JNICALL
  37 Java_sun_misc_VM_latestUserDefinedLoader(JNIEnv *env, jclass cls) {
  38     return JVM_LatestUserDefinedLoader(env);
  39 }
  40 
  41 typedef void (JNICALL *GetJvmVersionInfo_fp)(JNIEnv*, jvm_version_info*, size_t);
  42 
  43 JNIEXPORT void JNICALL
  44 Java_sun_misc_VM_initialize(JNIEnv *env, jclass cls) {
  45     GetJvmVersionInfo_fp func_p;
  46 
  47     if (!JDK_InitJvmHandle()) {
  48         JNU_ThrowInternalError(env, "Handle for JVM not found for symbol lookup");
  49         return;
  50     }
  51 
  52     func_p = (GetJvmVersionInfo_fp) JDK_FindJvmEntry("JVM_GetVersionInfo");
  53      if (func_p != NULL) {
  54         jvm_version_info info;
  55 
  56         memset(&info, 0, sizeof(info));
  57 
  58         /* obtain the JVM version info */
  59         (*func_p)(env, &info, sizeof(info));
  60     }
  61 }
  62