Support jvmstat on Windows if no memory-mapped file is needed.

Author: christianhaeubl

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/VMInspectionOptions.java

@@ -24,6 +24,8 @@
  */
 package com.oracle.svm.core;
 
+import static com.oracle.svm.core.jvmstat.PerfManager.Options.PerfDataMemoryMappedFile;
+
 import java.io.IOException;
 import java.util.HashSet;
 import java.util.List;
@@ -78,14 +80,14 @@ public final class VMInspectionOptions {
                     ", '" + MONITORING_JCMD_NAME + "' (experimental)" +
                     ", or '" + MONITORING_ALL_NAME + "' (deprecated behavior: defaults to '" + MONITORING_ALL_NAME + "' if no argument is provided)";
 
-    @APIOption(name = ENABLE_MONITORING_OPTION, defaultValue = MONITORING_DEFAULT_NAME) //
+    @APIOption(name = ENABLE_MONITORING_OPTION, defaultValue = MONITORING_DEFAULT_NAME)//
     @Option(help = "Enable monitoring features that allow the VM to be inspected at run time. Comma-separated list can contain " + MONITORING_ALLOWED_VALUES_TEXT + ". " +
-                    "For example: '--" + ENABLE_MONITORING_OPTION + "=" + MONITORING_HEAPDUMP_NAME + "," + MONITORING_JFR_NAME + "'.", type = OptionType.User) //
+                    "For example: '--" + ENABLE_MONITORING_OPTION + "=" + MONITORING_HEAPDUMP_NAME + "," + MONITORING_JFR_NAME + "'.", type = OptionType.User)//
     public static final HostedOptionKey<AccumulatingLocatableMultiOptionValue.Strings> EnableMonitoringFeatures = new HostedOptionKey<>(
                     AccumulatingLocatableMultiOptionValue.Strings.buildWithCommaDelimiter(),
                     VMInspectionOptions::validateEnableMonitoringFeatures);
 
-    @Option(help = "Dumps all runtime compiled methods on SIGUSR2.", type = OptionType.User) //
+    @Option(help = "Dumps all runtime compiled methods on SIGUSR2.", type = OptionType.User)//
     public static final HostedOptionKey<Boolean> DumpRuntimeCompilationOnSignal = new HostedOptionKey<>(false, VMInspectionOptions::notSupportedOnWindows);
 
     static {
@@ -100,7 +102,7 @@ private static void notSupportedOnWindows(HostedOptionKey<Boolean> optionKey) {
         }
     }
 
-    @Option(help = "Print native memory tracking statistics on shutdown if native memory tracking is enabled.", type = OptionType.User) //
+    @Option(help = "Print native memory tracking statistics on shutdown if native memory tracking is enabled.", type = OptionType.User)//
     public static final RuntimeOptionKey<Boolean> PrintNMTStatistics = new RuntimeOptionKey<>(false);
 
     @Platforms(Platform.HOSTED_ONLY.class)
@@ -122,6 +124,11 @@ public static void validateEnableMonitoringFeatures(@SuppressWarnings("unused")
         if (Platform.includedIn(WINDOWS_BASE.class)) {
             Set<String> notSupported = getEnabledMonitoringFeatures();
             notSupported.retainAll(NOT_SUPPORTED_ON_WINDOWS);
+            if (!PerfDataMemoryMappedFile.getValue()) {
+                /* Only not supported on Windows, if a memory-mapped file is needed. */
+                notSupported.remove(MONITORING_JVMSTAT_NAME);
+            }
+
             if (!notSupported.isEmpty()) {
                 String msg = String.format("the option '%s' contains value(s) that are not supported on Windows: %s. Those values will be ignored.", getDefaultMonitoringCommandArgument(),
                                 String.join(", ", notSupported));
@@ -191,7 +198,8 @@ public static boolean hasJfrSupport() {
 
     @Fold
     public static boolean hasJvmstatSupport() {
-        return hasAllOrKeywordMonitoringSupport(MONITORING_JVMSTAT_NAME) && !Platform.includedIn(WINDOWS_BASE.class);
+        /* Only not supported on Windows, if a memory-mapped file is needed. */
+        return hasAllOrKeywordMonitoringSupport(MONITORING_JVMSTAT_NAME) && (!Platform.includedIn(WINDOWS_BASE.class) || !PerfDataMemoryMappedFile.getValue());
     }
 
     @Fold
@@ -221,7 +229,7 @@ public static boolean hasJCmdSupport() {
 
     static class DeprecatedOptions {
         @Option(help = "Enables features that allow the VM to be inspected during run time.", type = OptionType.User, //
-                        deprecated = true, deprecationMessage = "Please use '--" + ENABLE_MONITORING_OPTION + "'") //
+                        deprecated = true, deprecationMessage = "Please use '--" + ENABLE_MONITORING_OPTION + "'")//
         static final HostedOptionKey<Boolean> AllowVMInspection = new HostedOptionKey<>(false) {
             @Override
             protected void onValueUpdate(EconomicMap<OptionKey<?>, Object> values, Boolean oldValue, Boolean newValue) {
@@ -232,7 +240,7 @@ protected void onValueUpdate(EconomicMap<OptionKey<?>, Object> values, Boolean o
         };
 
         @Option(help = "Dumps all thread stacktraces on SIGQUIT/SIGBREAK.", type = OptionType.User, //
-                        deprecated = true, deprecationMessage = "Please use '--" + ENABLE_MONITORING_OPTION + "=" + MONITORING_THREADDUMP_NAME + "'") //
+                        deprecated = true, deprecationMessage = "Please use '--" + ENABLE_MONITORING_OPTION + "=" + MONITORING_THREADDUMP_NAME + "'")//
         public static final HostedOptionKey<Boolean> DumpThreadStacksOnSignal = new HostedOptionKey<>(false);
     }
 

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jvmstat/PerfDataSupport.java

@@ -26,11 +26,19 @@
 
 import java.nio.ByteBuffer;
 
+import org.graalvm.nativeimage.ImageSingletons;
 import org.graalvm.nativeimage.Platform;
 import org.graalvm.nativeimage.Platforms;
 import org.graalvm.nativeimage.c.type.CLongPointer;
 
+import jdk.graal.compiler.api.replacements.Fold;
+
 public interface PerfDataSupport {
+    @Fold
+    static PerfDataSupport singleton() {
+        return ImageSingletons.lookup(PerfDataSupport.class);
+    }
+
     ByteBuffer attach(int lvmid);
 
     void detach(ByteBuffer bb);

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jvmstat/PerfManager.java

@@ -45,6 +45,7 @@
 import com.oracle.svm.core.option.HostedOptionKey;
 import com.oracle.svm.core.option.RuntimeOptionKey;
 import com.oracle.svm.core.thread.RecurringCallbackSupport;
+import com.oracle.svm.core.util.ImageHeapMap;
 import com.oracle.svm.core.util.VMError;
 
 import jdk.graal.compiler.options.Option;
@@ -65,7 +66,7 @@ public class PerfManager {
     public PerfManager() {
         perfDataHolders = new ArrayList<>();
         mutablePerfDataEntries = new ArrayList<>();
-        longEntries = EconomicMap.create();
+        longEntries = ImageHeapMap.createNonLayeredMap();
         perfDataThread = new PerfDataThread(this);
     }
 

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jvmstat/Target_jdk_internal_perf_Perf.java

@@ -26,8 +26,6 @@
 
 import java.nio.ByteBuffer;
 
-import org.graalvm.nativeimage.ImageSingletons;
-
 import com.oracle.svm.core.annotate.Substitute;
 import com.oracle.svm.core.annotate.TargetClass;
 
@@ -36,32 +34,32 @@
 public final class Target_jdk_internal_perf_Perf {
     @Substitute
     public ByteBuffer attach(int lvmid) {
-        return ImageSingletons.lookup(PerfDataSupport.class).attach(lvmid);
+        return PerfDataSupport.singleton().attach(lvmid);
     }
 
     @Substitute
     public void detach(ByteBuffer bb) {
-        ImageSingletons.lookup(PerfDataSupport.class).detach(bb);
+        PerfDataSupport.singleton().detach(bb);
     }
 
     @Substitute
     public long highResCounter() {
-        return ImageSingletons.lookup(PerfDataSupport.class).highResCounter();
+        return PerfDataSupport.singleton().highResCounter();
     }
 
     @Substitute
     public long highResFrequency() {
-        return ImageSingletons.lookup(PerfDataSupport.class).highResFrequency();
+        return PerfDataSupport.singleton().highResFrequency();
     }
 
     @Substitute
     public ByteBuffer createLong(String name, int variability, int units, long value) {
-        return ImageSingletons.lookup(PerfDataSupport.class).createLong(name, variability, units, value);
+        return PerfDataSupport.singleton().createLong(name, variability, units, value);
     }
 
     @Substitute
     public ByteBuffer createByteArray(String name, int variability, int units, byte[] value, int maxLength) {
-        return ImageSingletons.lookup(PerfDataSupport.class).createByteArray(name, variability, units, value, maxLength);
+        return PerfDataSupport.singleton().createByteArray(name, variability, units, value, maxLength);
     }
 
     @Substitute