Cleanups.

substratevm/src/com.oracle.svm.core.windows/src/com/oracle/svm/core/windows/WindowsSystemPropertiesSupport.java

@@ -246,7 +246,7 @@ public Pair<String, String> getOsNameAndVersion() {
                 break;
             }
 
-            VoidPointer versionInfo = NullableNativeMemory.malloc(WordFactory.unsigned(versionSize), NmtCategory.Other);
+            VoidPointer versionInfo = NullableNativeMemory.malloc(WordFactory.unsigned(versionSize), NmtCategory.Internal);
             if (versionInfo.isNull()) {
                 break;
             }

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

@@ -33,7 +33,6 @@
 import org.graalvm.nativeimage.Platform;
 import org.graalvm.nativeimage.Platform.WINDOWS;
 import org.graalvm.nativeimage.Platforms;
-import org.graalvm.nativeimage.impl.InternalPlatform;
 
 import com.oracle.svm.core.heap.dump.HeapDumping;
 import com.oracle.svm.core.jdk.management.ManagementAgentModule;
@@ -81,8 +80,7 @@ public final class VMInspectionOptions {
     @Option(help = "Dumps all runtime compiled methods on SIGUSR2.", type = OptionType.User) //
     public static final HostedOptionKey<Boolean> DumpRuntimeCompilationOnSignal = new HostedOptionKey<>(false);
 
-    // TEMP (chaeubl): change default to true.
-    @Option(help = "Print native memory tracking statistics on shutdown.", 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)
@@ -176,9 +174,7 @@ public static boolean hasThreadDumpSupport() {
 
     @Fold
     public static boolean hasNativeMemoryTrackingSupport() {
-        // TEMP (chaeubl): for testing in the CI.
-        return Platform.includedIn(InternalPlatform.NATIVE_ONLY.class);
-        // return hasAllOrKeywordMonitoringSupport(MONITORING_NMT_NAME);
+        return hasAllOrKeywordMonitoringSupport(MONITORING_NMT_NAME);
     }
 
     static class DeprecatedOptions {

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/c/function/IsolateSupportImpl.java

@@ -90,7 +90,7 @@ public static IsolateThread createIsolate(CreateIsolateParameters parameters, bo
                 // Internally, we use C-style arguments, i.e., the first argument is reserved for
                 // the name of the binary. We use null when isolates are created manually.
                 argc = isolateArgCount + 1;
-                argv = NativeMemory.malloc(SizeOf.unsigned(CCharPointerPointer.class).multiply(argc), NmtCategory.Other);
+                argv = NativeMemory.malloc(SizeOf.unsigned(CCharPointerPointer.class).multiply(argc), NmtCategory.Internal);
                 argv.write(0, WordFactory.nullPointer());
 
                 pointerHolders = new CTypeConversion.CCharPointerHolder[isolateArgCount];

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/memory/NullableNativeMemory.java

@@ -53,9 +53,9 @@ public class NullableNativeMemory {
      * This method returns a null pointer when allocation fails.
      */
     @Uninterruptible(reason = CALLED_FROM_UNINTERRUPTIBLE_CODE, mayBeInlined = true)
-    public static <T extends PointerBase> T malloc(UnsignedWord size, NmtCategory flag) {
+    public static <T extends PointerBase> T malloc(UnsignedWord size, NmtCategory category) {
         T outerPointer = UntrackedNullableNativeMemory.malloc(getAllocationSize(size));
-        return track(outerPointer, size, flag);
+        return track(outerPointer, size, category);
     }
 
     /**
@@ -64,9 +64,9 @@ public static <T extends PointerBase> T malloc(UnsignedWord size, NmtCategory fl
      * This method returns a null pointer when allocation fails.
      */
     @Uninterruptible(reason = CALLED_FROM_UNINTERRUPTIBLE_CODE, mayBeInlined = true)
-    public static <T extends PointerBase> T malloc(int size, NmtCategory flag) {
+    public static <T extends PointerBase> T malloc(int size, NmtCategory category) {
         assert size >= 0;
-        return malloc(WordFactory.unsigned(size), flag);
+        return malloc(WordFactory.unsigned(size), category);
     }
 
     /**
@@ -75,9 +75,9 @@ public static <T extends PointerBase> T malloc(int size, NmtCategory flag) {
      * This method returns a null pointer when allocation fails.
      */
     @Uninterruptible(reason = CALLED_FROM_UNINTERRUPTIBLE_CODE, mayBeInlined = true)
-    public static <T extends PointerBase> T calloc(UnsignedWord size, NmtCategory flag) {
+    public static <T extends PointerBase> T calloc(UnsignedWord size, NmtCategory category) {
         T outerPointer = UntrackedNullableNativeMemory.calloc(getAllocationSize(size));
-        return track(outerPointer, size, flag);
+        return track(outerPointer, size, category);
     }
 
     /**
@@ -86,9 +86,9 @@ public static <T extends PointerBase> T calloc(UnsignedWord size, NmtCategory fl
      * This method returns a null pointer when allocation fails.
      */
     @Uninterruptible(reason = CALLED_FROM_UNINTERRUPTIBLE_CODE, mayBeInlined = true)
-    public static <T extends PointerBase> T calloc(int size, NmtCategory flag) {
+    public static <T extends PointerBase> T calloc(int size, NmtCategory category) {
         assert size >= 0;
-        return calloc(WordFactory.unsigned(size), flag);
+        return calloc(WordFactory.unsigned(size), category);
     }
 
     /**
@@ -100,9 +100,9 @@ public static <T extends PointerBase> T calloc(int size, NmtCategory flag) {
      */
     @SuppressWarnings("unchecked")
     @Uninterruptible(reason = CALLED_FROM_UNINTERRUPTIBLE_CODE, mayBeInlined = true)
-    public static <T extends PointerBase> T realloc(T ptr, UnsignedWord size, NmtCategory flag) {
+    public static <T extends PointerBase> T realloc(T ptr, UnsignedWord size, NmtCategory category) {
         if (ptr.isNull()) {
-            return malloc(size, flag);
+            return malloc(size, category);
         } else if (!VMInspectionOptions.hasNativeMemoryTrackingSupport()) {
             return UntrackedNullableNativeMemory.realloc(ptr, getAllocationSize(size));
         }
@@ -123,7 +123,7 @@ public static <T extends PointerBase> T realloc(T ptr, UnsignedWord size, NmtCat
 
         /* Only untrack the old block if the allocation was successful. */
         NativeMemoryTracking.singleton().untrack(oldSize, oldCategory);
-        return track(newOuterPointer, size, flag);
+        return track(newOuterPointer, size, category);
     }
 
     /**
@@ -134,9 +134,9 @@ public static <T extends PointerBase> T realloc(T ptr, UnsignedWord size, NmtCat
      * deallocated and remains unchanged.
      */
     @Uninterruptible(reason = CALLED_FROM_UNINTERRUPTIBLE_CODE, mayBeInlined = true)
-    public static <T extends PointerBase> T realloc(T ptr, int size, NmtCategory flag) {
+    public static <T extends PointerBase> T realloc(T ptr, int size, NmtCategory category) {
         assert size >= 0;
-        return realloc(ptr, WordFactory.unsigned(size), flag);
+        return realloc(ptr, WordFactory.unsigned(size), category);
     }
 
     /**
@@ -167,9 +167,9 @@ private static UnsignedWord getAllocationSize(UnsignedWord size) {
 
     @SuppressWarnings("unchecked")
     @Uninterruptible(reason = CALLED_FROM_UNINTERRUPTIBLE_CODE, mayBeInlined = true)
-    private static <T extends PointerBase> T track(T outerPtr, UnsignedWord size, NmtCategory flag) {
+    private static <T extends PointerBase> T track(T outerPtr, UnsignedWord size, NmtCategory category) {
         if (VMInspectionOptions.hasNativeMemoryTrackingSupport() && outerPtr.isNonNull()) {
-            return (T) NativeMemoryTracking.singleton().track(outerPtr, size, flag);
+            return (T) NativeMemoryTracking.singleton().track(outerPtr, size, category);
         }
         return outerPtr;
     }

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/nmt/NmtCategory.java

@@ -52,8 +52,8 @@ public enum NmtCategory {
     /** Memory allocated via Unsafe. */
     Unsafe("Unsafe"),
 
-    /** Some other VM internal reason - avoid if possible, better to add a new category. */
-    Other("Other");
+    /** Some other, VM internal reason - avoid if possible, better to add a new category. */
+    Internal("Internal");
 
     private final String name;