8177845: Need a mechanism to load Graal

Reviewed-by: kvn, mchung

jdk/make/launcher/Launcher-jdk.aot.gmk

@@ -25,9 +25,25 @@
 
 include LauncherCommon.gmk
 
+# The JVMCI exports are needed since JVMCI is normally dynamically exported
+# (see jdk.vm.ci.services.internal.ReflectionAccessJDK::openJVMCITo).
+
 $(eval $(call SetupBuildLauncher, jaotc, \
     MAIN_CLASS := jdk.tools.jaotc.Main, \
     JAVA_ARGS := -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI \
+        --add-exports=jdk.internal.vm.ci/jdk.vm.ci.aarch64=$(call CommaList, jdk.internal.vm.compiler  jdk.aot) \
+        --add-exports=jdk.internal.vm.ci/jdk.vm.ci.amd64=$(call CommaList, jdk.internal.vm.compiler  jdk.aot) \
+        --add-exports=jdk.internal.vm.ci/jdk.vm.ci.code=$(call CommaList, jdk.internal.vm.compiler  jdk.aot) \
+        --add-exports=jdk.internal.vm.ci/jdk.vm.ci.code.site=$(call CommaList, jdk.internal.vm.compiler  jdk.aot) \
+        --add-exports=jdk.internal.vm.ci/jdk.vm.ci.code.stack=$(call CommaList, jdk.internal.vm.compiler  jdk.aot) \
+        --add-exports=jdk.internal.vm.ci/jdk.vm.ci.common=$(call CommaList, jdk.internal.vm.compiler  jdk.aot) \
+        --add-exports=jdk.internal.vm.ci/jdk.vm.ci.hotspot=$(call CommaList, jdk.internal.vm.compiler  jdk.aot) \
+        --add-exports=jdk.internal.vm.ci/jdk.vm.ci.hotspot.aarch64=$(call CommaList, jdk.internal.vm.compiler  jdk.aot) \
+        --add-exports=jdk.internal.vm.ci/jdk.vm.ci.hotspot.amd64=$(call CommaList, jdk.internal.vm.compiler  jdk.aot) \
+        --add-exports=jdk.internal.vm.ci/jdk.vm.ci.hotspot.sparc=$(call CommaList, jdk.internal.vm.compiler  jdk.aot) \
+        --add-exports=jdk.internal.vm.ci/jdk.vm.ci.meta=$(call CommaList, jdk.internal.vm.compiler  jdk.aot) \
+        --add-exports=jdk.internal.vm.ci/jdk.vm.ci.runtime=$(call CommaList, jdk.internal.vm.compiler  jdk.aot) \
+        --add-exports=jdk.internal.vm.ci/jdk.vm.ci.sparc=$(call CommaList, jdk.internal.vm.compiler  jdk.aot) \
         -XX:+UseAOT \
         -Djvmci.UseProfilingInformation=false \
         -Dgraal.UseExceptionProbability=false \

jdk/src/java.base/share/classes/jdk/internal/misc/VM.java

@@ -26,7 +26,10 @@
 package jdk.internal.misc;
 
 import static java.lang.Thread.State.*;
+import java.util.Map;
+import java.util.HashMap;
 import java.util.Properties;
+import java.util.Collections;
 
 public class VM {
 
@@ -132,25 +135,33 @@ public class VM {
      * Returns the system property of the specified key saved at
      * system initialization time.  This method should only be used
      * for the system properties that are not changed during runtime.
-     * It accesses a private copy of the system properties so
-     * that user's locking of the system properties object will not
-     * cause the library to deadlock.
      *
      * Note that the saved system properties do not include
-     * the ones set by sun.misc.Version.init().
+     * the ones set by java.lang.VersionProps.init().
-     *
      */
     public static String getSavedProperty(String key) {
-        if (savedProps.isEmpty())
+        if (savedProps == null)
-            throw new IllegalStateException("Should be non-empty if initialized");
+            throw new IllegalStateException("Not yet initialized");
 
-        return savedProps.getProperty(key);
+        return savedProps.get(key);
     }
 
-    // TODO: the Property Management needs to be refactored and
+    /**
-    // the appropriate prop keys need to be accessible to the
+     * Gets an unmodifiable view of the system properties saved at system
-    // calling classes to avoid duplication of keys.
+     * initialization time. This method should only be used
-    private static final Properties savedProps = new Properties();
+     * for the system properties that are not changed during runtime.
+     *
+     * Note that the saved system properties do not include
+     * the ones set by java.lang.VersionProps.init().
+     */
+    public static Map<String, String> getSavedProperties() {
+        if (savedProps == null)
+            throw new IllegalStateException("Not yet initialized");
+
+        return savedProps;
+    }
+
+    private static Map<String, String> savedProps;
 
     // Save a private copy of the system properties and remove
     // the system properties that are not intended for public access.
@@ -160,7 +171,12 @@ public class VM {
         if (initLevel() != 0)
             throw new IllegalStateException("Wrong init level");
 
-        savedProps.putAll(props);
+        @SuppressWarnings({"rawtypes", "unchecked"})
+        Map<String, String> sp =
+            Map.ofEntries(props.entrySet().toArray(new Map.Entry[0]));
+        // only main thread is running at this time, so savedProps and
+        // its content will be correctly published to threads started later
+        savedProps = sp;
 
         // Set the maximum amount of direct memory.  This value is controlled
         // by the vm option -XX:MaxDirectMemorySize=<size>.

jdk/src/java.base/unix/classes/module-info.java.extra

@@ -23,14 +23,5 @@
  * questions.
  */
 
-// jdk.internal.vm.compiler uses Unsafe and VM classes from jdk.internal.misc
-exports jdk.internal.misc to jdk.internal.vm.compiler;
-opens   jdk.internal.misc to jdk.internal.vm.compiler;
-
-// jdk.internal.vm.compiler uses com.sun.crypto.provider to generate crypto intrinsics
-opens com.sun.crypto.provider to jdk.internal.vm.compiler;
-
-exports jdk.internal.module to jdk.internal.vm.compiler;
-
 // AOT uses jdk.internal.misc.Unsafe
 exports jdk.internal.misc to jdk.aot;

jdk/test/tools/jimage/VerifyJimage.java

@@ -195,15 +195,19 @@ public class VerifyJimage {
                     .replaceAll("\\.class$", "").replace('/', '.');
     }
 
-    private static Set<String> DEPLOY_MODULES =
+    private static Set<String> EXCLUDED_MODULES =
-        Set.of("javafx.deploy", "jdk.deploy", "jdk.plugin", "jdk.javaws");
+        Set.of("javafx.deploy", "jdk.deploy", "jdk.plugin", "jdk.javaws",
+            // All JVMCI packages other than jdk.vm.ci.services are dynamically
+            // exported to jdk.internal.vm.compiler and jdk.aot
+            "jdk.internal.vm.compiler", "jdk.aot"
+        );
 
     private boolean accept(String entry) {
         int index = entry.indexOf('/', 1);
         String mn = index > 1 ? entry.substring(1, index) : "";
         // filter deployment modules
 
-        if (mn.isEmpty() || DEPLOY_MODULES.contains(mn)) {
+        if (mn.isEmpty() || EXCLUDED_MODULES.contains(mn)) {
             return false;
         }
         return entry.endsWith(".class") && !entry.endsWith(MODULE_INFO);