FastJNI_java_lang_System.cpp

/*******************************************************************************
 * Copyright IBM Corp. and others 2001
 *
 * This program and the accompanying materials are made available under
 * the terms of the Eclipse Public License 2.0 which accompanies this
 * distribution and is available at https://www.eclipse.org/legal/epl-2.0/
 * or the Apache License, Version 2.0 which accompanies this distribution and
 * is available at https://www.apache.org/licenses/LICENSE-2.0.
 *
 * This Source Code may also be made available under the following
 * Secondary Licenses when the conditions for such availability set
 * forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
 * General Public License, version 2 with the GNU Classpath
 * Exception [1] and GNU General Public License, version 2 with the
 * OpenJDK Assembly Exception [2].
 *
 * [1] https://www.gnu.org/software/classpath/license.html
 * [2] https://openjdk.org/legal/assembly-exception.html
 *
 * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
 *******************************************************************************/

#include "fastJNI.h"

#include "j9protos.h"
#include "j9consts.h"
#include "BytecodeAction.hpp"
#include "VMHelpers.hpp"

extern "C" {

/* java.lang.System: public static native long currentTimeMillis(); */
jlong JNICALL
Fast_java_lang_System_currentTimeMillis(J9VMThread *currentThread)
{
	PORT_ACCESS_FROM_VMC(currentThread);
	return j9time_current_time_millis();
}

/* java.lang.System: public static native long nanoTime(); */
jlong JNICALL
Fast_java_lang_System_nanoTime(J9VMThread *currentThread)
{
	PORT_ACCESS_FROM_VMC(currentThread);
	return j9time_nano_time();
}

J9_FAST_JNI_METHOD_TABLE(java_lang_System)
	J9_FAST_JNI_METHOD("currentTimeMillis", "()J", Fast_java_lang_System_currentTimeMillis,
		J9_FAST_JNI_RETAIN_VM_ACCESS | J9_FAST_JNI_NOT_GC_POINT | J9_FAST_JNI_NO_NATIVE_METHOD_FRAME | J9_FAST_JNI_NO_EXCEPTION_THROW |
		J9_FAST_JNI_NO_SPECIAL_TEAR_DOWN | J9_FAST_JNI_DO_NOT_WRAP_OBJECTS | J9_FAST_JNI_DO_NOT_PASS_RECEIVER)
	J9_FAST_JNI_METHOD("nanoTime", "()J", Fast_java_lang_System_nanoTime,
		J9_FAST_JNI_RETAIN_VM_ACCESS | J9_FAST_JNI_NOT_GC_POINT | J9_FAST_JNI_NO_NATIVE_METHOD_FRAME | J9_FAST_JNI_NO_EXCEPTION_THROW |
		J9_FAST_JNI_NO_SPECIAL_TEAR_DOWN | J9_FAST_JNI_DO_NOT_WRAP_OBJECTS | J9_FAST_JNI_DO_NOT_PASS_RECEIVER)
J9_FAST_JNI_METHOD_TABLE_END

}