/*
* Copyright (c) 2007, 2012, 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.
*
* 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.
*/
package test.interactive;
import jtt.jni.*;
/**
* Simple program to measure the performance of JNI.
*/
public class MeasureJNI {
private static final int N = 10000000;
static {
System.loadLibrary("javatest");
}
public static void main(String[] args) {
warmup();
doit();
}
// Ensures the JNI_Identity*.test methods are resolved before doit() is compiled.
static void warmup() {
JNI_IdentityInt.test(10);
JNI_IdentityFloat.test(10f);
JNI_IdentityLong.test(10L);
JNI_IdentityObject.test("10");
final Object[] arguments = new Object[56 + 1];
for (int i = 0; i < N / 10; i++) {
JNI_ManyObjectParameters.manyObjectParameters(arguments,
arguments[0],
arguments[1],
arguments[2],
arguments[3],
arguments[4],
arguments[5],
arguments[6],
arguments[7],
arguments[8],
arguments[9],
arguments[10],
arguments[11],
arguments[12],
arguments[13],
arguments[14],
arguments[15],
arguments[16],
arguments[17],
arguments[18],
arguments[19],
arguments[20],
arguments[21],
arguments[22],
arguments[23],
arguments[24],
arguments[25],
arguments[26],
arguments[27],
arguments[28],
arguments[29],
arguments[30],
arguments[31],
arguments[32],
arguments[33],
arguments[34],
arguments[35],
arguments[36],
arguments[37],
arguments[38],
arguments[39],
arguments[40],
arguments[41],
arguments[42],
arguments[43],
arguments[44],
arguments[45],
arguments[46],
arguments[47],
arguments[48],
arguments[49],
arguments[50],
arguments[51],
arguments[52],
arguments[53],
arguments[54],
arguments[55]);
}
}
public static void doit() {
long start = System.currentTimeMillis();
for (int i = 0; i < N; i++) {
JNI_IdentityInt.test(10);
}
System.out.println("int " + (System.currentTimeMillis() - start) + "ms");
start = System.currentTimeMillis();
for (int i = 0; i < N; i++) {
JNI_IdentityFloat.test(10f);
}
System.out.println("float " + (System.currentTimeMillis() - start) + "ms");
start = System.currentTimeMillis();
for (int i = 0; i < N; i++) {
JNI_IdentityLong.test(10L);
}
System.out.println("long " + (System.currentTimeMillis() - start) + "ms");
start = System.currentTimeMillis();
for (int i = 0; i < N; i++) {
JNI_IdentityObject.test("10");
}
System.out.println("Object " + (System.currentTimeMillis() - start) + "ms");
start = System.currentTimeMillis();
final Object[] arguments = new Object[56 + 1];
for (int i = 0; i < N / 10; i++) {
JNI_ManyObjectParameters.manyObjectParameters(arguments,
arguments[0],
arguments[1],
arguments[2],
arguments[3],
arguments[4],
arguments[5],
arguments[6],
arguments[7],
arguments[8],
arguments[9],
arguments[10],
arguments[11],
arguments[12],
arguments[13],
arguments[14],
arguments[15],
arguments[16],
arguments[17],
arguments[18],
arguments[19],
arguments[20],
arguments[21],
arguments[22],
arguments[23],
arguments[24],
arguments[25],
arguments[26],
arguments[27],
arguments[28],
arguments[29],
arguments[30],
arguments[31],
arguments[32],
arguments[33],
arguments[34],
arguments[35],
arguments[36],
arguments[37],
arguments[38],
arguments[39],
arguments[40],
arguments[41],
arguments[42],
arguments[43],
arguments[44],
arguments[45],
arguments[46],
arguments[47],
arguments[48],
arguments[49],
arguments[50],
arguments[51],
arguments[52],
arguments[53],
arguments[54],
arguments[55]);
}
System.out.println("ManyObjects " + (System.currentTimeMillis() - start) + "ms");
}
}