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PerformanceTest.java
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PerformanceTest.java
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/* Copyright (c) 2009-2015 Timothy Wall, All Rights Reserved
*
* The contents of this file is dual-licensed under 2
* alternative Open Source/Free licenses: LGPL 2.1 or later and
* Apache License 2.0. (starting with JNA version 4.0.0).
*
* You can freely decide which license you want to apply to
* the project.
*
* You may obtain a copy of the LGPL License at:
*
* http://www.gnu.org/licenses/licenses.html
*
* A copy is also included in the downloadable source code package
* containing JNA, in file "LGPL2.1".
*
* You may obtain a copy of the Apache License at:
*
* http://www.apache.org/licenses/
*
* A copy is also included in the downloadable source code package
* containing JNA, in file "AL2.0".
*/
package com.sun.jna;
import junit.framework.*;
import java.io.File;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.Map;
import java.util.Collections;
import java.lang.reflect.Method;
import com.sun.jna.DirectTest.TestInterface;
import com.sun.jna.DirectTest.TestLibrary;
//@SuppressWarnings("unused")
public class PerformanceTest extends TestCase implements Paths {
public void testEmpty() { }
private static class JNILibrary {
static {
String path = TESTPATH + NativeLibrary.mapSharedLibraryName("testlib");;
if (!new File(path).isAbsolute()) {
path = new File(path).getAbsolutePath();
}
System.load(path);
}
private static native double cos(double x);
private static native int getpid();
}
public static void main(java.lang.String[] argList) {
checkPerformance();
}
static class MathLibrary {
public static native double cos(double x);
static {
Native.register(Platform.MATH_LIBRARY_NAME);
}
}
interface MathInterface extends Library {
double cos(double x);
}
static class CLibrary {
public static class size_t extends IntegerType {
private static final long serialVersionUID = 1L;
public size_t() {
super(Native.POINTER_SIZE);
}
public size_t(long value) {
super(Native.POINTER_SIZE, value);
}
}
public static native Pointer memset(Pointer p, int v, size_t len);
public static native Pointer memset(Pointer p, int v, int len);
public static native Pointer memset(Pointer p, int v, long len);
public static native long memset(long p, int v, long len);
public static native int memset(int p, int v, int len);
public static native int strlen(String s1);
public static native int strlen(Pointer p);
public static native int strlen(byte[] b);
public static native int strlen(Buffer b);
static {
Native.register(Platform.C_LIBRARY_NAME);
}
}
static class PIDLibrary {
public static native int getpid();
static {
Native.register(Platform.C_LIBRARY_NAME);
}
}
static class W32PIDLibrary {
public static native int _getpid();
static {
Native.register(Platform.C_LIBRARY_NAME);
}
}
static interface CInterface extends Library {
int getpid();
Pointer memset(Pointer p, int v, int len);
int strlen(String s);
}
// Requires java.library.path include testlib
public static void checkPerformance() {
if (!Platform.HAS_BUFFERS) return;
final int COUNT = 100000;
System.out.println("Checking performance of different access methods (" + COUNT + " iterations)");
final int SIZE = 8*1024;
ByteBuffer b = ByteBuffer.allocateDirect(SIZE);
// Native order is faster
b.order(ByteOrder.nativeOrder());
Pointer pb = Native.getDirectBufferPointer(b);
String mname = Platform.MATH_LIBRARY_NAME;
MathInterface mlib = Native.load(mname, MathInterface.class);
Function f = NativeLibrary.getInstance(mname).getFunction("cos");
///////////////////////////////////////////
// cos
Object[] args = { Double.valueOf(0) };
double dresult;
long start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
dresult = mlib.cos(0d);
}
long delta = System.currentTimeMillis() - start;
System.out.println("cos (JNA interface): " + delta + "ms");
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
dresult = f.invokeDouble(args);
}
delta = System.currentTimeMillis() - start;
System.out.println("cos (JNA function): " + delta + "ms");
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
dresult = MathLibrary.cos(0d);
}
delta = System.currentTimeMillis() - start;
System.out.println("cos (JNA direct): " + delta + "ms");
long types = pb.peer;
long cif;
long resp;
long argv;
if (Native.POINTER_SIZE == 4) {
b.putInt(0, (int)Structure.FFIType.get(double.class).getPointer().peer);
cif = Native.ffi_prep_cif(0, 1, Structure.FFIType.get(double.class).getPointer().peer, types);
resp = pb.peer + 4;
argv = pb.peer + 12;
double INPUT = 42;
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
b.putInt(12, (int)pb.peer + 16);
b.putDouble(16, INPUT);
Native.ffi_call(cif, f.peer, resp, argv);
dresult = b.getDouble(4);
}
delta = System.currentTimeMillis() - start;
}
else {
b.putLong(0, Structure.FFIType.get(double.class).getPointer().peer);
cif = Native.ffi_prep_cif(0, 1, Structure.FFIType.get(double.class).getPointer().peer, types);
resp = pb.peer + 8;
argv = pb.peer + 16;
double INPUT = 42;
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
b.putLong(16, pb.peer + 24);
b.putDouble(24, INPUT);
Native.ffi_call(cif, f.peer, resp, argv);
dresult = b.getDouble(8);
}
delta = System.currentTimeMillis() - start;
}
System.out.println("cos (JNI ffi): " + delta + "ms");
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
dresult = JNILibrary.cos(0d);
}
delta = System.currentTimeMillis() - start;
System.out.println("cos (JNI): " + delta + "ms");
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
dresult = Math.cos(0d);
}
delta = System.currentTimeMillis() - start;
System.out.println("cos (pure java): " + delta + "ms");
String cname = Platform.C_LIBRARY_NAME;
Map<String, ?> options = Collections.<String, Object>emptyMap();
if (Platform.isWindows()) {
options = Collections.singletonMap(Library.OPTION_FUNCTION_MAPPER, new FunctionMapper() {
@Override
public String getFunctionName(NativeLibrary library, Method method) {
String name = method.getName();
if ("getpid".equals(name)) {
name = "_getpid";
}
return name;
}
});
}
CInterface clib = Native.load(cname, CInterface.class, options);
///////////////////////////////////////////
// getpid
int pid;
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
pid = clib.getpid();
}
delta = System.currentTimeMillis() - start;
System.out.println("getpid (JNA interface): " + delta + "ms");
start = System.currentTimeMillis();
if (Platform.isWindows()) {
for (int i=0;i < COUNT;i++) {
pid = W32PIDLibrary._getpid();
}
}
else {
for (int i=0;i < COUNT;i++) {
pid = PIDLibrary.getpid();
}
}
delta = System.currentTimeMillis() - start;
System.out.println("getpid (JNA direct): " + delta + "ms");
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
pid = JNILibrary.getpid();
}
delta = System.currentTimeMillis() - start;
System.out.println("getpid (JNI): " + delta + "ms");
///////////////////////////////////////////
// memset
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
Pointer presult = clib.memset(null, 0, 0);
}
delta = System.currentTimeMillis() - start;
System.out.println("memset (JNA interface): " + delta + "ms");
f = NativeLibrary.getInstance(cname).getFunction("memset");
args = new Object[] { null, Integer.valueOf(0), Integer.valueOf(0)};
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
Pointer presult = f.invokePointer(args);
}
delta = System.currentTimeMillis() - start;
System.out.println("memset (JNA function): " + delta + "ms");
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
Pointer presult = CLibrary.memset((Pointer)null, 0, new CLibrary.size_t(0));
}
delta = System.currentTimeMillis() - start;
System.out.println("memset (JNA direct Pointer/size_t): " + delta + "ms");
start = System.currentTimeMillis();
if (Native.POINTER_SIZE == 4) {
for (int i=0;i < COUNT;i++) {
Pointer presult = CLibrary.memset((Pointer)null, 0, 0);
}
} else {
for (int i=0;i < COUNT;i++) {
Pointer presult = CLibrary.memset((Pointer)null, 0, 0L);
}
}
delta = System.currentTimeMillis() - start;
System.out.println("memset (JNA direct Pointer/primitive): " + delta + "ms");
start = System.currentTimeMillis();
if (Native.POINTER_SIZE == 4) {
for (int i=0;i < COUNT;i++) {
int iresult = CLibrary.memset(0, 0, 0);
}
} else {
for (int i=0;i < COUNT;i++) {
long jresult = CLibrary.memset(0L, 0, 0L);
}
}
delta = System.currentTimeMillis() - start;
System.out.println("memset (JNA direct primitives): " + delta + "ms");
if (Native.POINTER_SIZE == 4) {
b.putInt(0, (int)Structure.FFIType.get(Pointer.class).getPointer().peer);
b.putInt(4, (int)Structure.FFIType.get(int.class).getPointer().peer);
b.putInt(8, (int)Structure.FFIType.get(int.class).getPointer().peer);
cif = Native.ffi_prep_cif(0, 3, Structure.FFIType.get(Pointer.class).getPointer().peer, types);
resp = pb.peer + 12;
argv = pb.peer + 16;
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
b.putInt(16, (int)pb.peer + 28);
b.putInt(20, (int)pb.peer + 32);
b.putInt(24, (int)pb.peer + 36);
b.putInt(28, 0);
b.putInt(32, 0);
b.putInt(36, 0);
Native.ffi_call(cif, f.peer, resp, argv);
b.getInt(12);
}
delta = System.currentTimeMillis() - start;
}
else {
b.putLong(0, Structure.FFIType.get(Pointer.class).getPointer().peer);
b.putLong(8, Structure.FFIType.get(int.class).getPointer().peer);
b.putLong(16, Structure.FFIType.get(long.class).getPointer().peer);
cif = Native.ffi_prep_cif(0, 3, Structure.FFIType.get(Pointer.class).getPointer().peer, types);
resp = pb.peer + 24;
argv = pb.peer + 32;
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
b.putLong(32, pb.peer + 56);
b.putLong(40, pb.peer + 64);
b.putLong(48, pb.peer + 72);
b.putLong(56, 0);
b.putInt(64, 0);
b.putLong(72, 0);
Native.ffi_call(cif, f.peer, resp, argv);
b.getLong(24);
}
delta = System.currentTimeMillis() - start;
}
System.out.println("memset (JNI ffi): " + delta + "ms");
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
Native.setMemory(Pointer.NULL, 0L, 0L, 0L, (byte)0);
}
delta = System.currentTimeMillis() - start;
System.out.println("memset (JNI): " + delta + "ms");
///////////////////////////////////////////
// strlen
String str = "performance test";
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
int iresult = clib.strlen(str);
}
delta = System.currentTimeMillis() - start;
System.out.println("strlen (JNA interface): " + delta + "ms");
f = NativeLibrary.getInstance(cname).getFunction("strlen");
args = new Object[] { str };
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
int iresult = f.invokeInt(args);
}
delta = System.currentTimeMillis() - start;
System.out.println("strlen (JNA function): " + delta + "ms");
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
int iresult = CLibrary.strlen(str);
}
delta = System.currentTimeMillis() - start;
System.out.println("strlen (JNA direct - String): " + delta + "ms");
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
int iresult = CLibrary.strlen(new NativeString(str).getPointer());
}
delta = System.currentTimeMillis() - start;
System.out.println("strlen (JNA direct - Pointer): " + delta + "ms");
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
int iresult = CLibrary.strlen(Native.toByteArray(str));
}
delta = System.currentTimeMillis() - start;
System.out.println("strlen (JNA direct - byte[]): " + delta + "ms");
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
byte[] bytes = str.getBytes();
b.position(0);
b.put(bytes);
b.put((byte)0);
int iresult = CLibrary.strlen(b);
}
delta = System.currentTimeMillis() - start;
System.out.println("strlen (JNA direct - Buffer): " + delta + "ms");
if (Native.POINTER_SIZE == 4) {
b.putInt(0, (int)Structure.FFIType.get(Pointer.class).getPointer().peer);
cif = Native.ffi_prep_cif(0, 1, Structure.FFIType.get(int.class).getPointer().peer, types);
resp = pb.peer + 4;
argv = pb.peer + 8;
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
b.putInt(8, (int)pb.peer + 12);
b.putInt(12, (int)pb.peer + 16);
b.position(16);
// This operation is very expensive!
b.put(str.getBytes());
b.put((byte)0);
Native.ffi_call(cif, f.peer, resp, argv);
int iresult = b.getInt(4);
}
delta = System.currentTimeMillis() - start;
}
else {
b.putLong(0, Structure.FFIType.get(Pointer.class).getPointer().peer);
cif = Native.ffi_prep_cif(0, 1, Structure.FFIType.get(long.class).getPointer().peer, types);
resp = pb.peer + 8;
argv = pb.peer + 16;
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
b.putLong(16, pb.peer + 24);
b.putLong(24, pb.peer + 32);
b.position(32);
// This operation is very expensive!
b.put(str.getBytes());
b.put((byte)0);
Native.ffi_call(cif, f.peer, resp, argv);
long jresult = b.getLong(8);
}
delta = System.currentTimeMillis() - start;
}
System.out.println("strlen (JNI ffi): " + delta + "ms");
///////////////////////////////////////////
// Direct buffer vs. Pointer methods
byte[] bulk = new byte[SIZE];
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
b.putInt(0, 0);
}
delta = System.currentTimeMillis() - start;
System.out.println("direct Buffer write: " + delta + "ms");
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
b.position(0);
b.put(bulk);
}
delta = System.currentTimeMillis() - start;
System.out.println("direct Buffer write (bulk): " + delta + "ms");
Pointer p = new Memory(SIZE);
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
p.setInt(0, 0);
}
delta = System.currentTimeMillis() - start;
System.out.println("Memory write: " + delta + "ms");
start = System.currentTimeMillis();
for (int i=0;i < COUNT;i++) {
p.write(0, bulk, 0, bulk.length);
}
delta = System.currentTimeMillis() - start;
System.out.println("Memory write (bulk): " + delta + "ms");
///////////////////////////////////////////
// Callbacks
TestInterface tlib = Native.load("testlib", TestInterface.class);
start = System.currentTimeMillis();
TestInterface.Int32Callback cb = new TestInterface.Int32Callback() {
@Override
public int invoke(int arg1, int arg2) {
return arg1 + arg2;
}
};
tlib.callInt32CallbackRepeatedly(cb, 1, 2, COUNT);
delta = System.currentTimeMillis() - start;
System.out.println("callback (JNA interface): " + delta + "ms");
tlib = new TestLibrary();
start = System.currentTimeMillis();
tlib.callInt32CallbackRepeatedly(cb, 1, 2, COUNT);
delta = System.currentTimeMillis() - start;
System.out.println("callback (JNA direct): " + delta + "ms");
start = System.currentTimeMillis();
TestInterface.NativeLongCallback nlcb = new TestInterface.NativeLongCallback() {
@Override
public NativeLong invoke(NativeLong arg1, NativeLong arg2) {
return new NativeLong(arg1.longValue() + arg2.longValue());
}
};
tlib.callLongCallbackRepeatedly(nlcb, new NativeLong(1), new NativeLong(2), COUNT);
delta = System.currentTimeMillis() - start;
System.out.println("callback w/NativeMapped (JNA interface): " + delta + "ms");
tlib = new TestLibrary();
start = System.currentTimeMillis();
tlib.callLongCallbackRepeatedly(nlcb, new NativeLong(1), new NativeLong(2), COUNT);
delta = System.currentTimeMillis() - start;
System.out.println("callback w/NativeMapped (JNA direct): " + delta + "ms");
}
}