1 /*
   2  * Copyright (c) 2004, 2018, 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 "jni.h"
  27 #include "jni_util.h"
  28 #include "jvm.h"
  29 #include "jdk_util.h"
  30 
  31 #include "jdk_internal_misc_VM.h"
  32 
  33 /* Only register the performance-critical methods */
  34 static JNINativeMethod methods[] = {
  35     {"getNanoTimeAdjustment", "(J)J", (void *)&JVM_GetNanoTimeAdjustment}
  36 };
  37 
  38 JNIEXPORT jobject JNICALL
  39 Java_jdk_internal_misc_VM_latestUserDefinedLoader0(JNIEnv *env, jclass cls) {
  40     return JVM_LatestUserDefinedLoader(env);
  41 }
  42 
  43 JNIEXPORT void JNICALL
  44 Java_jdk_internal_misc_VM_initialize(JNIEnv *env, jclass cls) {
  45     // Registers implementations of native methods described in methods[]
  46     // above.
  47     // In particular, registers JVM_GetNanoTimeAdjustment as the implementation
  48     // of the native VM.getNanoTimeAdjustment - avoiding the cost of
  49     // introducing a Java_jdk_internal_misc_VM_getNanoTimeAdjustment wrapper
  50     (*env)->RegisterNatives(env, cls,
  51                             methods, sizeof(methods)/sizeof(methods[0]));
  52 }
  53 
  54 JNIEXPORT jobjectArray JNICALL
  55 Java_jdk_internal_misc_VM_getRuntimeArguments(JNIEnv *env, jclass cls) {
  56     return JVM_GetVmArguments(env);
  57 }
  58 
  59 JNIEXPORT void JNICALL
  60 Java_jdk_internal_misc_VM_initializeFromArchive(JNIEnv *env, jclass ignore,
  61                                                 jclass c) {
  62     JVM_InitializeFromArchive(env, c);
  63 }
  64 
  65 JNIEXPORT void JNICALL
  66 Java_jdk_internal_misc_VM_linkClassesForCDS(JNIEnv *env, jclass ignore) {
  67     JVM_LinkClassesForCDS(env);
  68 }