test/jdk/jdk/internal/platform/docker/TestDockerMemoryMetrics.java

o  rev 57733 : 8231111: Cgroups v2: Rework Metrics in java.base so as to recognize unified hierarchy
|  Reviewed-by: bobv, mchung
~
o  rev 56862 : 8231111: Cgroups v2: Rework Metrics in java.base so as to recognize unified hierarchy
|  Reviewed-by: bobv
~

*** 19,28 ****
--- 19,29 ----
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
+ import jdk.internal.platform.Metrics;
  import jdk.test.lib.Utils;
  import jdk.test.lib.containers.docker.Common;
  import jdk.test.lib.containers.docker.DockerRunOptions;
  import jdk.test.lib.containers.docker.DockerTestUtils;
  import jdk.test.lib.process.OutputAnalyzer;
*** 56,79 ****
--- 57,93 ----
              testMemoryLimit("1g");
  
              testMemoryAndSwapLimit("200m", "1g");
              testMemoryAndSwapLimit("100m", "200m");
  
+             Metrics m = Metrics.systemMetrics();
+             // kernel memory, '--kernel-memory' switch, and OOM killer,
+             // '--oom-kill-disable' switch, tests not supported by cgroupv2
+             // runtimes
+             if (m != null) {
+                 if ("cgroupv1".equals(m.getProvider())) {
                      testKernelMemoryLimit("100m");
                      testKernelMemoryLimit("1g");
  
                      testOomKillFlag("100m", false);
+                 } else {
+                     System.out.println("kernel memory tests and OOM Kill flag tests not " +
+                                        "possible with cgroupv2.");
+                 }
+             }
              testOomKillFlag("100m", true);
  
              testMemoryFailCount("64m");
  
              testMemorySoftLimit("500m","200m");
  
          } finally {
+             if (!DockerTestUtils.RETAIN_IMAGE_AFTER_TEST) {
                  DockerTestUtils.removeDockerImage(imageName);
              }
          }
+     }
  
      private static void testMemoryLimit(String value) throws Exception {
          Common.logNewTestCase("testMemoryLimit, value = " + value);
          DockerRunOptions opts =
                  new DockerRunOptions(imageName, "/jdk/bin/java", "MetricsMemoryTester");
*** 145,155 ****
              opts.addDockerOpts("--oom-kill-disable");
          }
          opts.addJavaOpts("-cp", "/test-classes/")
                  .addJavaOpts("--add-exports", "java.base/jdk.internal.platform=ALL-UNNAMED")
                  .addClassOptions("memory", value, oomKillFlag + "");
!         DockerTestUtils.dockerRunJava(opts).shouldHaveExitValue(0).shouldContain("TEST PASSED!!!");
      }
  
      private static void testMemorySoftLimit(String mem, String softLimit) throws Exception {
          Common.logNewTestCase("testMemorySoftLimit, memory = " + mem + ", soft limit = " + softLimit);
          DockerRunOptions opts =
--- 159,170 ----
              opts.addDockerOpts("--oom-kill-disable");
          }
          opts.addJavaOpts("-cp", "/test-classes/")
                  .addJavaOpts("--add-exports", "java.base/jdk.internal.platform=ALL-UNNAMED")
                  .addClassOptions("memory", value, oomKillFlag + "");
!         OutputAnalyzer oa = DockerTestUtils.dockerRunJava(opts);
!         oa.shouldHaveExitValue(0).shouldContain("TEST PASSED!!!");
      }
  
      private static void testMemorySoftLimit(String mem, String softLimit) throws Exception {
          Common.logNewTestCase("testMemorySoftLimit, memory = " + mem + ", soft limit = " + softLimit);
          DockerRunOptions opts =