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8153194: PreserveFPRegistersTest.java runs out of memory in the nightlies

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Fixed test by setting reference size using WhileBox.getHeapOopSize.

Reviewed-by: vlivanov
This commit is contained in:
Rahul Raghavan 2016-06-30 05:05:52 -07:00
parent 6a56a5f255
commit 77c3e19380
1 changed files with 30 additions and 9 deletions
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39
hotspot/test/compiler/gcbarriers/PreserveFPRegistersTest.java
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@ -25,15 +25,22 @@
/**
* @test
* @bug 8148175
* @ignore 8153194
* @run main/othervm/timeout=300 -Xbatch -Xmx128m PreserveFPRegistersTest
* @requires vm.gc=="G1" | vm.gc=="null"
* @library /testlibrary /test/lib
* @run main/bootclasspath/othervm -Xbatch -XX:+UnlockDiagnosticVMOptions
* -XX:+WhiteBoxAPI -Xmx300m -XX:+UseG1GC PreserveFPRegistersTest
*/
import sun.hotspot.WhiteBox;
public class PreserveFPRegistersTest {
public static void main(String... args) throws InterruptedException {
new PreserveFPRegistersTest().go();
}
private static WhiteBox wb = WhiteBox.getWhiteBox();
public final Object[][] storage;
/**
@ -52,18 +59,32 @@ public class PreserveFPRegistersTest {
public final int regionCount;
PreserveFPRegistersTest() {
long regionSize = 1_000_000; //WB.g1RegionSize();
long regionSize = wb.g1RegionSize();
Runtime rt = Runtime.getRuntime();
long used = rt.totalMemory() - rt.freeMemory();
long totalFree = rt.maxMemory() - used;
regionCount = (int) ( (totalFree / regionSize) * 0.9);
int refSize = 4;
int refSize = wb.getHeapOopSize();
N = (int) ((regionSize / K ) / refSize) - 5;
storage = new Object[regionCount * K][];
for (int i = 0; i < storage.length; i++) {
storage[i] = new Object[N];
System.out.println("%% Memory");
System.out.println("%% used : " + used / 1024 + "M");
System.out.println("%% available : " + totalFree / 1024 + "M");
System.out.println("%% G1 Region Size: " + regionSize / 1024 + "M");
System.out.println("%% region count : " + regionCount);
System.out.println("%% Objects storage");
System.out.println("%% N (array length) : " + N);
System.out.println("%% K (objects in regions): " + K);
System.out.println("%% Reference size : " + refSize);
try {
storage = new Object[regionCount * K][];
for (int i = 0; i < storage.length; i++) {
storage[i] = new Object[N];
}
} catch(OutOfMemoryError e) {
throw new AssertionError("Test Failed with unexpected OutOfMemoryError exception");
}
}