src/share/vm/prims/whitebox.cpp

rev 11625 : Initial change
rev 11626 : Added exception

@@ -348,10 +348,15 @@
 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
   size_t alignment = Universe::heap()->collector_policy()->space_alignment();
   return (jlong)alignment;
 WB_END
 
+WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
+  size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
+  return (jlong)alignment;
+WB_END
+
 #if INCLUDE_ALL_GCS
 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
   G1CollectedHeap* g1 = G1CollectedHeap::heap();
   oop result = JNIHandles::resolve(obj);
   const HeapRegion* hr = g1->heap_region_containing(result);

@@ -399,18 +404,25 @@
 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
   return (jint)HeapRegion::GrainBytes;
 WB_END
 
 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
-  ParallelScavengeHeap* ps = ParallelScavengeHeap::heap();
-  size_t alignment = ps->gens()->virtual_spaces()->alignment();
-  return (jlong)alignment;
+#if INCLUDE_ALL_GCS
+  if (UseParallelGC) {
+    return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
+  }
+#endif // INCLUDE_ALL_GCS
+  THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
 WB_END
 
 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
-  size_t alignment = ParallelScavengeHeap::heap()->generation_alignment();
-  return (jlong)alignment;
+#if INCLUDE_ALL_GCS
+  if (UseParallelGC) {
+    return ParallelScavengeHeap::heap()->generation_alignment();
+  }
+#endif // INCLUDE_ALL_GCS
+  THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
 WB_END
 
 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
   ResourceMark rm(THREAD);
   G1CollectedHeap* g1h = G1CollectedHeap::heap();

@@ -1691,10 +1703,11 @@
   {CC"getHeapOopSize",                   CC"()I",                   (void*)&WB_GetHeapOopSize    },
   {CC"getVMPageSize",                    CC"()I",                   (void*)&WB_GetVMPageSize     },
   {CC"getVMAllocationGranularity",       CC"()J",                   (void*)&WB_GetVMAllocationGranularity },
   {CC"getVMLargePageSize",               CC"()J",                   (void*)&WB_GetVMLargePageSize},
   {CC"getHeapSpaceAlignment",            CC"()J",                   (void*)&WB_GetHeapSpaceAlignment},
+  {CC"getHeapAlignment",                 CC"()J",                   (void*)&WB_GetHeapAlignment},
   {CC"isClassAlive0",                    CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive      },
   {CC"parseCommandLine0",
       CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
       (void*) &WB_ParseCommandLine
   },