[GR-51479] Implement cgroup support in native code.

sdk/mx.sdk/suite.py

@@ -1382,10 +1382,24 @@ class UniversalDetector {
               "toolchain.cmake" : {
                 "source_type": "string",
                 "value": '''
-set(CMAKE_SYSTEM_NAME Linux)
 set(CMAKE_C_COMPILER   <path:MUSL_GCC_TOOLCHAIN>/x86_64-linux-musl-native/bin/gcc)
 set(CMAKE_CXX_COMPILER <path:MUSL_GCC_TOOLCHAIN>/x86_64-linux-musl-native/bin/g++)
 set(CMAKE_AR           <path:MUSL_GCC_TOOLCHAIN>/x86_64-linux-musl-native/bin/ar)
+'''
+              },
+            },
+            "dependencies": [
+              "MUSL_GCC_TOOLCHAIN",
+            ],
+          },
+          "aarch64": {
+            "layout" : {
+              "toolchain.cmake" : {
+                "source_type": "string",
+                "value": '''
+set(CMAKE_C_COMPILER   <path:MUSL_GCC_TOOLCHAIN>/aarch64-linux-musl-native/bin/gcc)
+set(CMAKE_CXX_COMPILER <path:MUSL_GCC_TOOLCHAIN>/aarch64-linux-musl-native/bin/g++)
+set(CMAKE_AR           <path:MUSL_GCC_TOOLCHAIN>/aarch64-linux-musl-native/bin/ar)
 '''
               },
             },

substratevm/CHANGELOG.md

@@ -33,6 +33,7 @@ This changelog summarizes major changes to GraalVM Native Image.
 * (GR-52844) Add `-Os`, a new optimization mode to configure the optimizer in a way to get the smallest code size.
 * (GR-49770) Add support for glob patterns in resource-config files in addition to regexp. The Tracing agent now prints entries in the glob format.
 * (GR-46386) Throw missing registration errors for JNI queries when the query was not included in the reachability metadata.
+* (GR-51479) Implement cgroup support in native code. See the [README](src/com.oracle.svm.native.libcontainer/README.md) and the [PR description](https://github.com/oracle/graal/pull/8989).
 
 ## GraalVM for JDK 22 (Internal Version 24.0.0)
 * (GR-48304) Red Hat added support for the JFR event ThreadAllocationStatistics.

substratevm/ci/ci.jsonnet

@@ -16,7 +16,7 @@
   local t(limit) = task_spec({timelimit: limit}),
 
   // mx gate build config
-  local mxgate(tags) = os_arch_jdk_mixin + sg.mxgate(tags, suite="substratevm", suite_short="svm"),
+  local mxgate(tags) = os_arch_jdk_mixin + sg.mxgate(tags, suite="substratevm", suite_short="svm") + task_spec(common.deps.svm),
 
   local eclipse = task_spec(common.deps.eclipse),
   local jdt = task_spec(common.deps.jdt),

substratevm/mx.substratevm/suite.py

@@ -850,6 +850,52 @@
             "jacoco" : "exclude",
         },
 
+        "com.oracle.svm.native.libcontainer": {
+            "subDir": "src",
+            "native": "static_lib",
+            "multitarget": {
+                "libc": ["glibc", "musl", "default"],
+            },
+            "deliverable" : "svm_container",
+            "os_arch": {
+                "linux": {
+                    "<others>": {
+                        "cflags": ["-O2", "-fno-rtti", "-fno-exceptions", "-fvisibility=hidden", "-fPIC",
+                                   # defines
+                                   "-DNATIVE_IMAGE", "-DLINUX", "-DINCLUDE_SUFFIX_COMPILER=_gcc",
+                                   # uncomment to enable debugging
+                                   # Note: -O0 might run into linker error because it does not purge unused symbols,
+                                   # e.g., '__cxa_pure_virtual'. -O1 or higher avoids the problem.
+                                   # "-DASSERT", "-DPRINT_WARNINGS", "-g", "-O1", "-DLOG_LEVEL=6",
+                                   # include dirs
+                                   "-I<path:com.oracle.svm.native.libcontainer>/src/java.base/share/native/include",
+                                   "-I<path:com.oracle.svm.native.libcontainer>/src/java.base/unix/native/include",
+                                   "-I<path:com.oracle.svm.native.libcontainer>/src/hotspot",
+                                   "-I<path:com.oracle.svm.native.libcontainer>/src/hotspot/share",
+                                   "-I<path:com.oracle.svm.native.libcontainer>/src/hotspot/os/linux",
+                                   "-I<path:com.oracle.svm.native.libcontainer>/src/hotspot/os/posix",
+                                   "-I<path:com.oracle.svm.native.libcontainer>/src/hotspot/os/posix/include",
+                                   "-I<path:com.oracle.svm.native.libcontainer>/src/svm",
+                                   "-I<path:com.oracle.svm.native.libcontainer>/src/svm/share",
+                                   # HotSpot standard flags
+                                   # See https://github.com/openjdk/jdk/blob/master/make/autoconf/flags-cflags.m4
+                                   # C++ standard
+                                   "-std=c++14",
+                                   # Always enable optional macros
+                                   "-D__STDC_FORMAT_MACROS", "-D__STDC_LIMIT_MACROS", "-D__STDC_CONSTANT_MACROS",
+                        ],
+                        "ldflags": ["-Wl,-z,noexecstack"],
+                    },
+                },
+                "<others>": {
+                    "<others>": {
+                        "ignore": "only needed on linux",
+                    },
+                },
+            },
+            "jacoco" : "exclude",
+        },
+
         "svm-jvmfuncs-fallback-builder": {
             "class" : "SubstrateJvmFuncsFallbacksBuilder",
         },
@@ -1798,6 +1844,7 @@
                         "./": [
                             "dependency:com.oracle.svm.native.libchelper/*",
                             "dependency:com.oracle.svm.native.jvm.posix/*",
+                            "dependency:com.oracle.svm.native.libcontainer/*",
                         ],
                     },
                 },

substratevm/src/com.oracle.svm.core.genscavenge/src/com/oracle/svm/core/genscavenge/HeapImpl.java

@@ -59,7 +59,6 @@
 import com.oracle.svm.core.heap.NoAllocationVerifier;
 import com.oracle.svm.core.heap.ObjectHeader;
 import com.oracle.svm.core.heap.ObjectVisitor;
-import com.oracle.svm.core.heap.PhysicalMemory;
 import com.oracle.svm.core.heap.ReferenceHandler;
 import com.oracle.svm.core.heap.ReferenceHandlerThread;
 import com.oracle.svm.core.heap.ReferenceInternals;
@@ -904,7 +903,6 @@ private long totalMemory() {
 
     @Substitute
     private long maxMemory() {
-        PhysicalMemory.size(); // ensure physical memory size is set correctly and not estimated
         GCImpl.getPolicy().updateSizeParameters();
         return GCImpl.getPolicy().getMaximumHeapSize().rawValue();
     }

substratevm/src/com.oracle.svm.core.genscavenge/src/com/oracle/svm/core/genscavenge/HeapParameters.java

@@ -24,8 +24,6 @@
  */
 package com.oracle.svm.core.genscavenge;
 
-import jdk.graal.compiler.api.replacements.Fold;
-import jdk.graal.compiler.word.Word;
 import org.graalvm.nativeimage.Platform;
 import org.graalvm.nativeimage.Platforms;
 import org.graalvm.word.UnsignedWord;
@@ -38,6 +36,9 @@
 import com.oracle.svm.core.util.UserError;
 import com.oracle.svm.core.util.VMError;
 
+import jdk.graal.compiler.api.replacements.Fold;
+import jdk.graal.compiler.word.Word;
+
 /** Constants and variables for the size and layout of the heap and behavior of the collector. */
 public final class HeapParameters {
     @Platforms(Platform.HOSTED_ONLY.class)
@@ -87,6 +88,13 @@ public static int getMaxSurvivorSpaces() {
      * Memory configuration
      */
 
+    /**
+     * Sets the {@link SubstrateGCOptions#MaxHeapSize} option value.
+     *
+     * Note that the value is used during VM initialization and stored in various places in the JDK
+     * in direct or derived form. These usages will <strong>not be updated!</strong> Thus, changing
+     * the maximum heap size at runtime is not recommended.
+     */
     public static void setMaximumHeapSize(UnsignedWord value) {
         SubstrateGCOptions.MaxHeapSize.update(value.rawValue());
     }

substratevm/src/com.oracle.svm.core.posix/src/com/oracle/svm/core/posix/darwin/PhysicalMemorySupportImpl.java → substratevm/src/com.oracle.svm.core.posix/src/com/oracle/svm/core/posix/darwin/DarwinPhysicalMemorySupportImpl.java

@@ -40,7 +40,7 @@
 import com.oracle.svm.core.util.VMError;
 
 @AutomaticallyRegisteredImageSingleton(PhysicalMemorySupport.class)
-class PhysicalMemorySupportImpl implements PhysicalMemorySupport {
+class DarwinPhysicalMemorySupportImpl implements PhysicalMemorySupport {
 
     @Override
     public UnsignedWord size() {