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*
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/*
* @test
* @bug 8013120
* @summary Release committed memory and make sure NMT handles it correctly
* @key nmt regression
* @library /testlibrary /testlibrary/whitebox
* @build ReleaseCommittedMemory
* @run main ClassFileInstaller sun.hotspot.WhiteBox
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail ReleaseCommittedMemory
*/
import sun.hotspot.WhiteBox;
public class ReleaseCommittedMemory {
public static void main(String args[]) throws Exception {
WhiteBox wb = WhiteBox.getWhiteBox();
long reserveSize = 256 * 1024;
long addr;
addr = wb.NMTReserveMemory(reserveSize);
wb.NMTCommitMemory(addr, 128*1024);
wb.NMTReleaseMemory(addr, reserveSize);
wb.NMTWaitForDataMerge();
}
}