Java程序
|
1109行
|
29.64 KB
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.util.ArrayList;
/**
* The matrix of tests includes the A-E axis for loop body contents and
* the 0-5 axis for iterator style.
*
* <ul>
* <li>A: empty body</li>
* <li>B: array element access and update</li>
* <li>C: instance field access and update</li>
* <li>D: method call to empty method</li>
* <li>E: synch and then method call to empty method</li>
* <li>F: 5 method calls to empty method</li>
* <li>G: one small object allocation (empty constructor)</li>
* <li>H: copy 8k of bytes from one array to another</li>
* </ul>
*
* <ul>
* <li>0: for() loop backward to 0</li>
* <li>1: for() loop forward to local variable</li>
* <li>2: for() loop forward to array length</li>
* <li>3: for(:) loop over array</li>
* <li>4: for() loop forward to instance variable</li>
* <li>5: for() loop forward to trivial method call</li>
* <li>6: for(:) loop over ArrayList</li>
* </ul>
*/
public class Main {
static public final int BODIES = 8;
static public final int LOOPS = 7;
static public void main(String[] args) throws Exception {
boolean timing = (args.length >= 1) && args[0].equals("--timing");
int iters = 100;
double probeSec;
for (;;) {
long t0 = System.nanoTime();
runAllTests(iters, false);
long t1 = System.nanoTime();
probeSec = (t1 - t0) / 1000000000.0;
if (probeSec > 0.25) {
break;
}
iters *= 2;
}
// Attempt to arrange for the real test to take 20 seconds.
iters = (int) ((iters / probeSec) * 20);
if (timing) {
System.out.println("iters = " + iters);
}
run(timing, iters);
}
static private enum Normalization {
NONE, PER_COLUMN, TOP_LEFT;
}
static public void printTimings(double[][] timings, Normalization norm) {
System.out.println();
System.out.printf("%-7s A B C D E" +
" F G H\n",
(norm == Normalization.NONE) ? "(usec)" : "(ratio)");
System.out.println(" -------- -------- -------- -------- " +
"-------- -------- -------- --------");
double bases[] = new double[BODIES];
for (int i = 0; i < BODIES; i++) {
double n;
switch (norm) {
case PER_COLUMN: n = timings[i][0]; break;
case TOP_LEFT: n = timings[0][0]; break;
default /*NONE*/: n = 1.0; break;
}
bases[i] = n;
}
for (int i = 0; i < LOOPS; i++) {
System.out.printf("%4d: %8.3g %8.3g %8.3g %8.3g %8.3g %8.3g " +
"%8.3g %8.3g\n",
i,
timings[0][i] / bases[0],
timings[1][i] / bases[1],
timings[2][i] / bases[2],
timings[3][i] / bases[3],
timings[4][i] / bases[4],
timings[5][i] / bases[5],
timings[6][i] / bases[6],
timings[7][i] / bases[7]);
}
}
static public void run(boolean timing, int iters) {
double[][] timings = null; // assign to avoid apparent javac bug
// Try up to 5 times to get good times.
for (int i = 0; i < 5; i++) {
double[][] newTimings = runAllTests(iters, timing || (i == 0));
if (timings == null) {
timings = newTimings;
} else {
combineTimings(timings, newTimings, i);
}
if (checkTimes(timings, timing)) {
break;
}
}
System.out.println("Done with runs.");
boolean goodTimes = checkTimes(timings, true);
if (! goodTimes) {
timing = true;
}
if (timing) {
printTimings(timings, Normalization.NONE);
printTimings(timings, Normalization.TOP_LEFT);
printTimings(timings, Normalization.PER_COLUMN);
} else {
System.out.println("\nAll times are within the expected ranges.");
}
}
static public void combineTimings(double[][] target, double[][] newTimes,
int oldWeight) {
for (int i = 0; i < target.length; i++) {
for (int j = 0; j < target[i].length; j++) {
target[i][j] =
((target[i][j] * oldWeight) + newTimes[i][j])
/ (oldWeight + 1);
}
}
}
static public boolean checkTimes(double[][] timings, boolean print) {
// expected increase over A1
double[][] expected = {
{ 1.0, 2.3, 2.4, 3.3, 6.5, 12.0, 57.0, 94.0 },
{ 1.2, 2.4, 2.5, 3.4, 6.6, 12.2, 60.0, 95.0 },
{ 1.5, 2.6, 2.9, 3.5, 6.7, 12.4, 63.0, 96.0 },
{ 1.6, 2.8, 2.9, 3.6, 6.8, 12.6, 63.5, 97.0 },
{ 1.7, 3.0, 2.9, 3.7, 6.9, 12.8, 64.0, 98.0 },
{ 6.0, 6.0, 6.0, 7.0, 10.0, 15.0, 64.5, 105.0 },
{ 31.0, 31.2, 31.5, 34.0, 41.0, 43.0, 91.0, 135.0 },
};
boolean good = true;
for (int x = 0; x < BODIES; x++) {
for (int y = 0; y < LOOPS; y++) {
double ratio = timings[x][y] / timings[0][0];
if (ratio > expected[y][x]) {
if (print) {
System.out.printf("%c%d is too slow: %.3g vs. %.3g\n",
(char) (x + 'A'), y, ratio, expected[y][x]);
}
good = false;
}
}
}
return good;
}
static public double[][] runAllTests(int iters, boolean print) {
// diters is used to get usec, not nanosec; hence the extra 1000.
double diters = (double) iters * INNER_COUNT * 1000;
double[][] timings = new double[BODIES][LOOPS];
long t0, t1, t2, t3, t4, t5, t6, t7;
// Column A
if (print) {
System.out.println("Running A...");
}
t0 = System.nanoTime();
testA0(iters);
t1 = System.nanoTime();
testA1(iters);
t2 = System.nanoTime();
testA2(iters);
t3 = System.nanoTime();
testA3(iters);
t4 = System.nanoTime();
testA4(iters);
t5 = System.nanoTime();
testA5(iters);
t6 = System.nanoTime();
testA6(iters);
t7 = System.nanoTime();
timings[0][0] = (t1 - t0) / diters;
timings[0][1] = (t2 - t1) / diters;
timings[0][2] = (t3 - t2) / diters;
timings[0][3] = (t4 - t3) / diters;
timings[0][4] = (t5 - t4) / diters;
timings[0][5] = (t6 - t5) / diters;
timings[0][6] = (t7 - t6) / diters;
// Column B
if (print) {
System.out.println("Running B...");
}
t0 = System.nanoTime();
testB0(iters);
t1 = System.nanoTime();
testB1(iters);
t2 = System.nanoTime();
testB2(iters);
t3 = System.nanoTime();
testB3(iters);
t4 = System.nanoTime();
testB4(iters);
t5 = System.nanoTime();
testB5(iters);
t6 = System.nanoTime();
testB6(iters);
t7 = System.nanoTime();
timings[1][0] = (t1 - t0) / diters;
timings[1][1] = (t2 - t1) / diters;
timings[1][2] = (t3 - t2) / diters;
timings[1][3] = (t4 - t3) / diters;
timings[1][4] = (t5 - t4) / diters;
timings[1][5] = (t6 - t5) / diters;
timings[1][6] = (t7 - t6) / diters;
// Column C
if (print) {
System.out.println("Running C...");
}
t0 = System.nanoTime();
testC0(iters);
t1 = System.nanoTime();
testC1(iters);
t2 = System.nanoTime();
testC2(iters);
t3 = System.nanoTime();
testC3(iters);
t4 = System.nanoTime();
testC4(iters);
t5 = System.nanoTime();
testC5(iters);
t6 = System.nanoTime();
testC6(iters);
t7 = System.nanoTime();
timings[2][0] = (t1 - t0) / diters;
timings[2][1] = (t2 - t1) / diters;
timings[2][2] = (t3 - t2) / diters;
timings[2][3] = (t4 - t3) / diters;
timings[2][4] = (t5 - t4) / diters;
timings[2][5] = (t6 - t5) / diters;
timings[2][6] = (t7 - t6) / diters;
// Column D
if (print) {
System.out.println("Running D...");
}
t0 = System.nanoTime();
testD0(iters);
t1 = System.nanoTime();
testD1(iters);
t2 = System.nanoTime();
testD2(iters);
t3 = System.nanoTime();
testD3(iters);
t4 = System.nanoTime();
testD4(iters);
t5 = System.nanoTime();
testD5(iters);
t6 = System.nanoTime();
testD6(iters);
t7 = System.nanoTime();
timings[3][0] = (t1 - t0) / diters;
timings[3][1] = (t2 - t1) / diters;
timings[3][2] = (t3 - t2) / diters;
timings[3][3] = (t4 - t3) / diters;
timings[3][4] = (t5 - t4) / diters;
timings[3][5] = (t6 - t5) / diters;
timings[3][6] = (t7 - t6) / diters;
// Column E
if (print) {
System.out.println("Running E...");
}
t0 = System.nanoTime();
testE0(iters);
t1 = System.nanoTime();
testE1(iters);
t2 = System.nanoTime();
testE2(iters);
t3 = System.nanoTime();
testE3(iters);
t4 = System.nanoTime();
testE4(iters);
t5 = System.nanoTime();
testE5(iters);
t6 = System.nanoTime();
testE6(iters);
t7 = System.nanoTime();
timings[4][0] = (t1 - t0) / diters;
timings[4][1] = (t2 - t1) / diters;
timings[4][2] = (t3 - t2) / diters;
timings[4][3] = (t4 - t3) / diters;
timings[4][4] = (t5 - t4) / diters;
timings[4][5] = (t6 - t5) / diters;
timings[4][6] = (t7 - t6) / diters;
// Column F
if (print) {
System.out.println("Running F...");
}
t0 = System.nanoTime();
testF0(iters);
t1 = System.nanoTime();
testF1(iters);
t2 = System.nanoTime();
testF2(iters);
t3 = System.nanoTime();
testF3(iters);
t4 = System.nanoTime();
testF4(iters);
t5 = System.nanoTime();
testF5(iters);
t6 = System.nanoTime();
testF6(iters);
t7 = System.nanoTime();
timings[5][0] = (t1 - t0) / diters;
timings[5][1] = (t2 - t1) / diters;
timings[5][2] = (t3 - t2) / diters;
timings[5][3] = (t4 - t3) / diters;
timings[5][4] = (t5 - t4) / diters;
timings[5][5] = (t6 - t5) / diters;
timings[5][6] = (t7 - t6) / diters;
// Reduce the iters for the last two, since they're much slower.
iters /= 5;
diters /= 5;
// Column G
if (print) {
System.out.println("Running G...");
}
t0 = System.nanoTime();
testG0(iters);
t1 = System.nanoTime();
testG1(iters);
t2 = System.nanoTime();
testG2(iters);
t3 = System.nanoTime();
testG3(iters);
t4 = System.nanoTime();
testG4(iters);
t5 = System.nanoTime();
testG5(iters);
t6 = System.nanoTime();
testG6(iters);
t7 = System.nanoTime();
timings[6][0] = (t1 - t0) / diters;
timings[6][1] = (t2 - t1) / diters;
timings[6][2] = (t3 - t2) / diters;
timings[6][3] = (t4 - t3) / diters;
timings[6][4] = (t5 - t4) / diters;
timings[6][5] = (t6 - t5) / diters;
timings[6][6] = (t7 - t6) / diters;
// Column H
if (print) {
System.out.println("Running H...");
}
t0 = System.nanoTime();
testH0(iters);
t1 = System.nanoTime();
testH1(iters);
t2 = System.nanoTime();
testH2(iters);
t3 = System.nanoTime();
testH3(iters);
t4 = System.nanoTime();
testH4(iters);
t5 = System.nanoTime();
testH5(iters);
t6 = System.nanoTime();
testH6(iters);
t7 = System.nanoTime();
timings[7][0] = (t1 - t0) / diters;
timings[7][1] = (t2 - t1) / diters;
timings[7][2] = (t3 - t2) / diters;
timings[7][3] = (t4 - t3) / diters;
timings[7][4] = (t5 - t4) / diters;
timings[7][5] = (t6 - t5) / diters;
timings[7][6] = (t7 - t6) / diters;
return timings;
}
// Helper bits and pieces
static private final int INNER_COUNT = 100;
static private final int[] INNER_ARRAY = new int[INNER_COUNT];
static private final ArrayList<Object> INNER_LIST =
new ArrayList<Object>(INNER_COUNT);
static private final Target TARGET = new Target();
static private final int ARRAY_BYTES = 8192;
static private final byte[] BYTES_1 = new byte[ARRAY_BYTES];
static private final byte[] BYTES_2 = new byte[ARRAY_BYTES];
static {
for (int i = 0; i < INNER_COUNT; i++) {
INNER_LIST.add(null);
}
}
public static class Target {
public int value;
public int size = INNER_COUNT;
public void simple() {
// empty
}
public int size() {
return size;
}
}
// The tests themselves
static public void testA0(int iters) {
for (int outer = iters; outer > 0; outer--) {
for (int i = INNER_COUNT; i > 0; i--) {
// empty
}
}
}
static public void testA1(int iters) {
int count = INNER_COUNT;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < count; i++) {
// empty
}
}
}
static public void testA2(int iters) {
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < array.length; i++) {
// empty
}
}
}
static public void testA3(int iters) {
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i : array) {
// empty
}
}
}
static public void testA4(int iters) {
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < target.size; i++) {
// empty
}
}
}
static public void testA5(int iters) {
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < target.size(); i++) {
// empty
}
}
}
static public void testA6(int iters) {
ArrayList<Object> list = INNER_LIST;
for (int outer = iters; outer > 0; outer--) {
for (Object o : list) {
// empty
}
}
}
static public void testB0(int iters) {
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = INNER_COUNT; i > 0; i--) {
target.value++;
}
}
}
static public void testB1(int iters) {
Target target = TARGET;
int count = INNER_COUNT;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < count; i++) {
target.value++;
}
}
}
static public void testB2(int iters) {
Target target = TARGET;
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < array.length; i++) {
target.value++;
}
}
}
static public void testB3(int iters) {
Target target = TARGET;
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i : array) {
target.value++;
}
}
}
static public void testB4(int iters) {
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < target.size; i++) {
target.value++;
}
}
}
static public void testB5(int iters) {
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < target.size(); i++) {
target.value++;
}
}
}
static public void testB6(int iters) {
Target target = TARGET;
ArrayList<Object> list = INNER_LIST;
for (int outer = iters; outer > 0; outer--) {
for (Object o : list) {
target.value++;
}
}
}
static public void testC0(int iters) {
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i = INNER_COUNT - 1; i >= 0; i--) {
array[i]++;
}
}
}
static public void testC1(int iters) {
int[] array = INNER_ARRAY;
int count = INNER_COUNT;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < count; i++) {
array[i]++;
}
}
}
static public void testC2(int iters) {
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < array.length; i++) {
array[i]++;
}
}
}
static public void testC3(int iters) {
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i : array) {
array[0] = i + 1;
}
}
}
static public void testC4(int iters) {
Target target = TARGET;
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < target.size; i++) {
array[i]++;
}
}
}
static public void testC5(int iters) {
int[] array = INNER_ARRAY;
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < target.size(); i++) {
array[i]++;
}
}
}
static public void testC6(int iters) {
int[] array = INNER_ARRAY;
ArrayList<Object> list = INNER_LIST;
for (int outer = iters; outer > 0; outer--) {
for (Object o : list) {
array[0]++;
}
}
}
static public void testD0(int iters) {
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = INNER_COUNT; i > 0; i--) {
target.simple();
}
}
}
static public void testD1(int iters) {
Target target = TARGET;
int count = INNER_COUNT;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < count; i++) {
target.simple();
}
}
}
static public void testD2(int iters) {
Target target = TARGET;
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < array.length; i++) {
target.simple();
}
}
}
static public void testD3(int iters) {
Target target = TARGET;
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i : array) {
target.simple();
}
}
}
static public void testD4(int iters) {
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < target.size; i++) {
target.simple();
}
}
}
static public void testD5(int iters) {
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < target.size(); i++) {
target.simple();
}
}
}
static public void testD6(int iters) {
Target target = TARGET;
ArrayList<Object> list = INNER_LIST;
for (int outer = iters; outer > 0; outer--) {
for (Object o : list) {
target.simple();
}
}
}
static public void testE0(int iters) {
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = INNER_COUNT; i > 0; i--) {
synchronized (target) {
target.simple();
}
}
}
}
static public void testE1(int iters) {
Target target = TARGET;
int count = INNER_COUNT;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < count; i++) {
synchronized (target) {
target.simple();
}
}
}
}
static public void testE2(int iters) {
Target target = TARGET;
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < array.length; i++) {
synchronized (target) {
target.simple();
}
}
}
}
static public void testE3(int iters) {
Target target = TARGET;
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i : array) {
synchronized (target) {
target.simple();
}
}
}
}
static public void testE4(int iters) {
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < target.size; i++) {
synchronized (target) {
target.simple();
}
}
}
}
static public void testE5(int iters) {
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < target.size(); i++) {
synchronized (target) {
target.simple();
}
}
}
}
static public void testE6(int iters) {
Target target = TARGET;
ArrayList<Object> list = INNER_LIST;
for (int outer = iters; outer > 0; outer--) {
for (Object o : list) {
synchronized (target) {
target.simple();
}
}
}
}
static public void testF0(int iters) {
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = INNER_COUNT; i > 0; i--) {
target.simple();
target.simple();
target.simple();
target.simple();
target.simple();
}
}
}
static public void testF1(int iters) {
Target target = TARGET;
int count = INNER_COUNT;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < count; i++) {
target.simple();
target.simple();
target.simple();
target.simple();
target.simple();
}
}
}
static public void testF2(int iters) {
Target target = TARGET;
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < array.length; i++) {
target.simple();
target.simple();
target.simple();
target.simple();
target.simple();
}
}
}
static public void testF3(int iters) {
Target target = TARGET;
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i : array) {
target.simple();
target.simple();
target.simple();
target.simple();
target.simple();
}
}
}
static public void testF4(int iters) {
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < target.size; i++) {
target.simple();
target.simple();
target.simple();
target.simple();
target.simple();
}
}
}
static public void testF5(int iters) {
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < target.size(); i++) {
target.simple();
target.simple();
target.simple();
target.simple();
target.simple();
}
}
}
static public void testF6(int iters) {
Target target = TARGET;
ArrayList<Object> list = INNER_LIST;
for (int outer = iters; outer > 0; outer--) {
for (Object o : list) {
target.simple();
target.simple();
target.simple();
target.simple();
target.simple();
}
}
}
static public void testG0(int iters) {
for (int outer = iters; outer > 0; outer--) {
for (int i = INNER_COUNT; i > 0; i--) {
new Target();
}
}
}
static public void testG1(int iters) {
int count = INNER_COUNT;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < count; i++) {
new Target();
}
}
}
static public void testG2(int iters) {
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < array.length; i++) {
new Target();
}
}
}
static public void testG3(int iters) {
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i : array) {
new Target();
}
}
}
static public void testG4(int iters) {
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < target.size; i++) {
new Target();
}
}
}
static public void testG5(int iters) {
Target target = TARGET;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < target.size(); i++) {
new Target();
}
}
}
static public void testG6(int iters) {
ArrayList<Object> list = INNER_LIST;
for (int outer = iters; outer > 0; outer--) {
for (Object o : list) {
new Target();
}
}
}
static public void testH0(int iters) {
byte[] b1 = BYTES_1;
byte[] b2 = BYTES_2;
for (int outer = iters; outer > 0; outer--) {
for (int i = INNER_COUNT; i > 0; i--) {
System.arraycopy(b1, 0, b2, 0, ARRAY_BYTES);
}
}
}
static public void testH1(int iters) {
byte[] b1 = BYTES_1;
byte[] b2 = BYTES_2;
int count = INNER_COUNT;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < count; i++) {
System.arraycopy(b1, 0, b2, 0, ARRAY_BYTES);
}
}
}
static public void testH2(int iters) {
byte[] b1 = BYTES_1;
byte[] b2 = BYTES_2;
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < array.length; i++) {
System.arraycopy(b1, 0, b2, 0, ARRAY_BYTES);
}
}
}
static public void testH3(int iters) {
byte[] b1 = BYTES_1;
byte[] b2 = BYTES_2;
int[] array = INNER_ARRAY;
for (int outer = iters; outer > 0; outer--) {
for (int i : array) {
System.arraycopy(b1, 0, b2, 0, ARRAY_BYTES);
}
}
}
static public void testH4(int iters) {
Target target = TARGET;
byte[] b1 = BYTES_1;
byte[] b2 = BYTES_2;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < target.size; i++) {
System.arraycopy(b1, 0, b2, 0, ARRAY_BYTES);
}
}
}
static public void testH5(int iters) {
Target target = TARGET;
byte[] b1 = BYTES_1;
byte[] b2 = BYTES_2;
for (int outer = iters; outer > 0; outer--) {
for (int i = 0; i < target.size(); i++) {
System.arraycopy(b1, 0, b2, 0, ARRAY_BYTES);
}
}
}
static public void testH6(int iters) {
byte[] b1 = BYTES_1;
byte[] b2 = BYTES_2;
ArrayList<Object> list = INNER_LIST;
for (int outer = iters; outer > 0; outer--) {
for (Object o : list) {
System.arraycopy(b1, 0, b2, 0, ARRAY_BYTES);
}
}
}
}