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8362482: [TESTBUG] serviceability/HeapDump/UnmountedVThreadNativeMethodAtTop.java: System.gc() does not provide full GC #26363

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8362482: [TESTBUG] serviceability/HeapDump/UnmountedVThreadNativeMethodAtTop.java: System.gc() does not provide full GC #26363

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a86765c
Use WhiteBox::fullGC instead of System::gc
reinrich Jul 17, 2025
6c71666
Use /native option
reinrich Jul 17, 2025
6235383
Merge branch 'master'
reinrich Jul 23, 2025
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9 changes: 7 additions & 2 deletions test/hotspot/jtreg/serviceability/HeapDump/UnmountedVThreadNativeMethodAtTop.java
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Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,9 @@
* @requires vm.continuations
* @modules jdk.management
* @library /test/lib
* @run junit/othervm/native --enable-native-access=ALL-UNNAMED UnmountedVThreadNativeMethodAtTop
* @build jdk.test.whitebox.WhiteBox
* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
* @run junit/othervm/native -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI --enable-native-access=ALL-UNNAMED UnmountedVThreadNativeMethodAtTop
*/

import java.lang.management.ManagementFactory;
Expand All @@ -45,9 +47,12 @@
import jdk.test.lib.hprof.model.Snapshot;
import jdk.test.lib.hprof.model.ThreadObject;
import jdk.test.lib.hprof.parser.Reader;
import jdk.test.whitebox.WhiteBox;

public class UnmountedVThreadNativeMethodAtTop {

static WhiteBox wb = WhiteBox.getWhiteBox();

boolean done;

/**
Expand All @@ -56,7 +61,7 @@ public class UnmountedVThreadNativeMethodAtTop {
*/
@BeforeEach
void doGC() {
System.gc();
wb.fullGC();
}

/**
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