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* version 2 for more details ( a copy is included in the LICENSE file that
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*
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* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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*/
/*
* @ test
* @ bug 5045582
* @ summary arrays larger than 1 < < 30
* @ author Martin Buchholz
*/
// A proper regression test for 5045582 requires too much memory.
// If you have a really big machine, run like this:
// java -Xms25g -Xmx25g Big 30
import java.util.*;
public class Big {
private static void realMain(String[] args) throws Throwable {
final int shift = intArg(args, 0 , 10 ); // "30" is real test
final int tasks = intArg(args, 1 , ~0 ); // all tasks
final int n = (1 <<shift) + 47 ;
// To test byte arrays larger than 1<<30, you need 1600MB. Run like:
// java -Xms1600m -Xmx1600m Big 30 1
if ((tasks & 0 x1) != 0 ) {
System.out.println("byte[]" );
System.gc();
byte [] a = new byte [n];
a[0 ] = (byte ) -44 ;
a[1 ] = (byte ) -43 ;
a[n-2 ] = (byte ) +43 ;
a[n-1 ] = (byte ) +44 ;
for (int i : new int [] { 0 , 1 , n-2 , n-1 })
try { equal(i, Arrays.binarySearch(a, a[i])); }
catch (Throwable t) { unexpected(t); }
for (int i : new int [] { n-2 , n-1 })
try { equal(i, Arrays.binarySearch(a, n-5 , n, a[i])); }
catch (Throwable t) { unexpected(t); }
a[n-19 ] = (byte ) 45 ;
try { Arrays.sort(a, n-29 , n); }
catch (Throwable t) { unexpected(t); }
equal(a[n-1 ], (byte ) 45 );
equal(a[n-2 ], (byte ) 44 );
equal(a[n-3 ], (byte ) 43 );
equal(a[n-4 ], (byte ) 0 );
}
// To test Object arrays larger than 1<<30, you need 13GB. Run like:
// java -Xms13g -Xmx13g Big 30 2
if ((tasks & 0 x2) != 0 ) {
System.out.println("Integer[]" );
System.gc();
Integer[] a = new Integer[n];
Integer ZERO = 0 ;
Arrays.fill(a, ZERO);
a[0 ] = -44 ;
a[1 ] = -43 ;
a[n-2 ] = +43 ;
a[n-1 ] = +44 ;
for (int i : new int [] { 0 , 1 , n-2 , n-1 })
try { equal(i, Arrays.binarySearch(a, a[i])); }
catch (Throwable t) { unexpected(t); }
for (int i : new int [] { n-2 , n-1 })
try { equal(i, Arrays.binarySearch(a, n-5 , n, a[i])); }
catch (Throwable t) { unexpected(t); }
a[n-19 ] = 45 ;
try { Arrays.sort(a, n-29 , n); }
catch (Throwable t) { unexpected(t); }
equal(a[n-1 ], 45 );
equal(a[n-2 ], 44 );
equal(a[n-3 ], 43 );
equal(a[n-4 ], 0 );
}
}
//--------------------- Infrastructure ---------------------------
static volatile int passed = 0 , failed = 0 ;
static void pass() {passed++;}
static void fail() {failed++; Thread .dumpStack();}
static void fail(String msg) {System.out.println(msg); fail();}
static void unexpected(Throwable t) {failed++; t.printStackTrace();}
static void check(boolean cond) {if (cond) pass(); else fail();}
static void equal(Object x, Object y) {
if (x == null ? y == null : x.equals(y)) pass();
else fail(x + " not equal to " + y);}
public static void main(String[] args) throws Throwable {
try {realMain(args);} catch (Throwable t) {unexpected(t);}
System.out.printf("%nPassed = %d, failed = %d%n%n" , passed, failed);
if (failed > 0 ) throw new AssertionError("Some tests failed" );}
static int intArg(String[] args, int i, int defaultValue) {
return args.length > i ? Integer.parseInt(args[i]) : defaultValue;}
}
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