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changeset 18589:c640f804dbad

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Intrinsify Reflection.getClassAccessFlags
author Tom Rodriguez <tom.rodriguez@oracle.com>
date Mon, 01 Dec 2014 11:31:53 -0800
parents 3f63ea587d2b
children 15224d4c0347 caad1a70312d
files graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotVMConfig.java graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/HotSpotReplacementsUtil.java graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/ReflectionSubstitutions.java
diffstat 3 files changed, 22 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotVMConfig.java	Mon Dec 01 17:12:45 2014 +0100
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotVMConfig.java	Mon Dec 01 11:31:53 2014 -0800
@@ -896,6 +896,7 @@
     @HotSpotVMConstant(name = "JVM_ACC_FIELD_INTERNAL") @Stable public int jvmAccFieldInternal;
     @HotSpotVMConstant(name = "JVM_ACC_FIELD_STABLE") @Stable public int jvmAccFieldStable;
     @HotSpotVMConstant(name = "JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE") @Stable public int jvmAccFieldHasGenericSignature;
+    @HotSpotVMConstant(name = "JVM_ACC_WRITTEN_FLAGS") @Stable public int jvmAccWrittenFlags;
 
     @HotSpotVMField(name = "Thread::_tlab", type = "ThreadLocalAllocBuffer", get = HotSpotVMField.Type.OFFSET) @Stable public int threadTlabOffset;
 
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/HotSpotReplacementsUtil.java	Mon Dec 01 17:12:45 2014 +0100
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/HotSpotReplacementsUtil.java	Mon Dec 01 11:31:53 2014 -0800
@@ -290,6 +290,11 @@
         return config().klassAccessFlagsOffset;
     }
 
+    @Fold
+    public static int jvmAccWrittenFlags() {
+        return config().jvmAccWrittenFlags;
+    }
+
     public static final LocationIdentity KLASS_LAYOUT_HELPER_LOCATION = NamedLocationIdentity.immutable("Klass::_layout_helper");
 
     @Fold
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/ReflectionSubstitutions.java	Mon Dec 01 17:12:45 2014 +0100
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/ReflectionSubstitutions.java	Mon Dec 01 11:31:53 2014 -0800
@@ -22,7 +22,13 @@
  */
 package com.oracle.graal.hotspot.replacements;
 
+import static com.oracle.graal.hotspot.replacements.HotSpotReplacementsUtil.*;
+
+import java.lang.reflect.*;
+
 import com.oracle.graal.api.replacements.*;
+import com.oracle.graal.hotspot.word.*;
+import com.oracle.graal.nodes.*;
 import com.oracle.graal.nodes.spi.*;
 
 /**
@@ -34,4 +40,14 @@
     @MacroSubstitution(macro = ReflectionGetCallerClassNode.class, optional = true)
     public static native Class<?> getCallerClass();
 
+    @MethodSubstitution
+    public static int getClassAccessFlags(Class<?> aClass) {
+        KlassPointer klass = ClassGetHubNode.readClass(GuardingPiNode.guardingNonNull(aClass));
+        if (klass.isNull()) {
+            // Class for primitive type
+            return Modifier.ABSTRACT | Modifier.FINAL | Modifier.PUBLIC;
+        } else {
+            return klass.readInt(klassAccessFlagsOffset(), KLASS_ACCESS_FLAGS_LOCATION) & jvmAccWrittenFlags();
+        }
+    }
 }