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Datei: VM.c Sprache: C

/*
* Copyright (c) 2004, 2020, 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.  Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* 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.
*/

#include "jni.h"
#include "jni_util.h"
#include "jvm.h"
#include "jdk_util.h"

#include "jdk_internal_misc_VM.h"

/* Only register the performance-critical methods */
static JNINativeMethod methods[] = {
    {"getNanoTimeAdjustment", "(J)J", (void *)&JVM_GetNanoTimeAdjustment}
};

JNIEXPORT jobject JNICALL
Java_jdk_internal_misc_VM_latestUserDefinedLoader0(JNIEnv *env, jclass cls) {
    return JVM_LatestUserDefinedLoader(env);
}

JNIEXPORT void JNICALL
Java_jdk_internal_misc_VM_initialize(JNIEnv *env, jclass cls) {
    // Registers implementations of native methods described in methods[]
    // above.
    // In particular, registers JVM_GetNanoTimeAdjustment as the implementation
    // of the native VM.getNanoTimeAdjustment - avoiding the cost of
    // introducing a Java_jdk_internal_misc_VM_getNanoTimeAdjustment wrapper
    (*env)->RegisterNatives(env, cls,
                            methods, sizeof(methods)/sizeof(methods[0]));
}

JNIEXPORT jobjectArray JNICALL
Java_jdk_internal_misc_VM_getRuntimeArguments(JNIEnv *env, jclass cls) {
    return JVM_GetVmArguments(env);
}

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