/*
* Copyright (c) 2002-2011 LWJGL Project
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*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
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* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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package org.lwjgl.test.mapped;
import org.lwjgl.MemoryUtil;
import org.lwjgl.PointerBuffer;
import org.lwjgl.opengl.Display;
import org.lwjgl.util.mapped.*;
import java.io.File;
import java.lang.reflect.Field;
import java.nio.ByteBuffer;
/** @author Riven */
@SuppressWarnings("static-access")
public class MappedObjectTests4 {
public static void testLWJGL() throws Exception {
System.out.println(new File(System.getProperty("java.library.path")).getCanonicalPath());
Display.create();
}
public static void testLocalView() {
MappedFloat mapped1 = MappedFloat.malloc(5);
MappedFloat mapped2 = MappedFloat.malloc(5);
testLocalView(mapped1);
testLocalView(mapped1, mapped2);
MappedSomething some = MappedSomething.malloc(5);
testLocalView(some);
}
private static void testLocalView(MappedFloat mapped1) {
final MappedFloat[] array = mapped1.asArray();
assert (array.length == 5);
int l = 10 * array.length;
for ( int localView1 = 0; localView1 < 5; localView1++ ) {
array[localView1].value = localView1 * 5;
array[localView1].value *= 2.0f;
}
System.out.println();
float x = 0.0f;
for ( int localView1 = 0; localView1 < 5; localView1++ ) {
System.out.println("[" + localView1 + "] =>" + array[localView1].value);
x += array[localView1].value;
}
System.out.println("x = " + x);
}
private static void testLocalView(MappedFloat mo1, MappedFloat mo2) {
final MappedFloat[] array1 = mo1.<MappedFloat>asArray();
for ( int v1 = 0; v1 < 5; v1++ ) {
array1[v1].value = (float)Math.random();
array1[v1].value *= 2.0f;
}
final MappedFloat[] array2 = mo2.<MappedFloat>asArray();
for ( int v2 = 0; v2 < 5; v2++ ) {
array2[v2].value = (float)Math.random();
array2[v2].value *= 2.0f;
}
System.out.println();
for ( int v1 = 0; v1 < 5; v1++ ) {
System.out.println("[" + v1 + "] =>" + array1[v1].value);
}
for ( int v2 = 0; v2 < 5; v2++ ) {
System.out.println("[" + v2 + "] =>" + array2[v2].value);
}
}
private static void testLocalView(MappedSomething some) {
final MappedSomething[] array = some.asArray();
assert (array.length == 5);
final long baseAddress = MemoryUtil.getAddress(some.backingByteBuffer());
for ( int i = 0; i < array.length; i++ ) {
ByteBuffer data = array[i].data;
assert (data.capacity() == (64 - 4));
assert (MemoryUtil.getAddress(data) == baseAddress + i * MappedSomething.SIZEOF + 4);
}
}
public static class MappedPointer extends MappedObject {
int foo;
@Pointer long pointer;
int bar;
}
public static void testPointer() {
MappedPointer data = MappedPointer.malloc(100);
assert (data.backingByteBuffer().capacity() == 100 * (4 + 4 + PointerBuffer.getPointerSize()));
for ( int i = 0; i < 100; i++ ) {
data.view = i;
data.foo = i;
data.pointer = i * 1000;
data.bar = i * 2;
}
for ( int i = 0; i < 100; i++ ) {
data.view = i;
assert (data.foo == i);
assert (data.pointer == i * 1000);
assert (data.bar == i * 2);
}
}
@MappedType(cacheLinePadding = true)
public static class MappedCacheLinePadded extends MappedObject {
int foo;
int bar;
}
public static void testCacheLineAlignment() {
MappedCacheLinePadded data = MappedCacheLinePadded.malloc(10);
assert (data.backingByteBuffer().capacity() == 10 * CacheUtil.getCacheLineSize());
assert (MemoryUtil.getAddress(data.backingByteBuffer()) % CacheUtil.getCacheLineSize() == 0);
for ( int i = 0; i < 10; i++ ) {
data.view = i;
data.foo = i;
data.bar = i * 2;
}
for ( int i = 0; i < 10; i++ ) {
data.view = i;
assert (data.foo == i);
assert (data.bar == i * 2);
}
}
public static class MappedFieldCacheLinePadded extends MappedObject {
// If we assume CacheUtil.getCacheLineSize() == 64
// 0 - 63
@CacheLinePad long longBar;
// 64 - 71
long longFoo;
// 72 - 75
int intFoo;
// 128 - 131
@CacheLinePad(before = true) int intBar;
// 192 - 195
int foo;
// 256 - 267
@CacheLinePad(before = true, after = false)
@MappedField(byteLength = 12)
ByteBuffer buffer;
// 268 - 271
int bar;
}
public static void testCacheLinePadding() {
MappedFieldCacheLinePadded data = MappedFieldCacheLinePadded.map(CacheUtil.createByteBuffer(10 * MappedFieldCacheLinePadded.SIZEOF));
final int sizeof =
CacheUtil.getCacheLineSize()
+ 8
+ (CacheUtil.getCacheLineSize() - 8)
+ CacheUtil.getCacheLineSize()
+ 4
+ (CacheUtil.getCacheLineSize() - 4)
+ 12
+ 4;
assert (MappedFieldCacheLinePadded.SIZEOF == sizeof);
assert (data.backingByteBuffer().capacity() == sizeof * 10);
for ( int i = 0; i < 10; i++ ) {
data.view = i;
data.longFoo = i * 1000000000L;
data.longBar = i * 2000000000L;
data.intFoo = i * 1000;
data.intBar = i * 2000;
data.foo = i;
}
for ( int i = 0; i < 10; i++ ) {
data.view = i;
assert (data.longFoo == i * 1000000000L);
assert (data.longBar == i * 2000000000L);
assert (data.intFoo == i * 1000);
assert (data.intBar == i * 2000);
assert (data.foo == i);
}
}
public static class POJOFieldCacheLinePadded {
@CacheLinePad long longBar;
long longFoo;
int intFoo;
@CacheLinePad(before = true) int intBar;
int foo;
@CacheLinePad boolean bool;
int bar;
}
public static void testCacheLinePaddingPOJO() {
Field[] fields = new POJOFieldCacheLinePadded().getClass().getDeclaredFields();
assert (fields.length == (1 + 7) + 1 + 1 + (15 + 1 + 15) + 1 + (1 + 63) + 1);
}
}