TestTenantMemoryMTSafe.java

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/*
 * @test
 * @summary TestTenantMemoryMTSafe
 * @library /testlibrary /testlibrary/whitebox
 * @build TestTenantMemoryMTSafe sun.hotspot.WhiteBox
 * @run main ClassFileInstaller sun.hotspot.WhiteBox
 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
 * -XX:+MultiTenant -XX:+TenantHeapThrottling -XX:+WhiteBoxAPI -XX:+UseG1GC -Xmx1g -Xms1g
 * -XX:G1HeapRegionSize=1M -XX:+PrintGCDetails -XX:+PrintGCDateStamps TestTenantMemoryMTSafe
 */

import static com.oracle.java.testlibrary.Asserts.*;
import com.alibaba.tenant.TenantConfiguration;
import com.alibaba.tenant.TenantContainer;
import com.alibaba.tenant.TenantException;
import com.oracle.java.testlibrary.OutputAnalyzer;
import com.oracle.java.testlibrary.Platform;
import com.oracle.java.testlibrary.ProcessTools;
import sun.hotspot.WhiteBox;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;

public class TestTenantMemoryMTSafe {

    private static final WhiteBox WB = WhiteBox.getWhiteBox();

    private static final int HEAP_REGION_SIZE = WB.g1RegionSize();

    public static void main(String[] args) throws Exception {
        TenantConfiguration config = new TenantConfiguration().limitHeap(HEAP_REGION_SIZE * 1024);
        TenantContainer tenant = TenantContainer.create(config);

        System.gc();

        try {
            tenant.run(()->{
                try {
                    Object[] array = new Object[3000];
                    for (int i = 0; i < 3000; i++) {
                        array[i] = new byte[100*1024];
                    }
                    WB.fullGC();
                    for (int i = 0; i < 3000; i++) {
                        array[i] = null;
                    }
                    WB.g1StartConcMarkCycle();
                    while (WB.g1InConcurrentMark()) {
                        Thread.sleep(100);
                    }
                    WB.youngGC();
                    WB.youngGC();
                    WB.youngGC();
                    WB.youngGC();
                    WB.youngGC();
                    assertTrue(tenant.getOccupiedMemory() < 1024*1024*5,"Must be less than 5m");
                } catch (Exception e) {
                    System.out.println("Error: " + e.getMessage());
                    fail();
                }
            });
        } catch (TenantException e) {
            fail();
        }
    }

    private static void fail() {
        assertTrue(false, "Failed!");
    }
}