src/hotspot/share/gc/shared/gcArguments.cpp

rev 52613 : webrev.01

@@ -26,10 +26,11 @@
 #include "precompiled.hpp"
 #include "gc/shared/gcArguments.hpp"
 #include "runtime/arguments.hpp"
 #include "runtime/globals.hpp"
 #include "runtime/globals_extension.hpp"
+#include "utilities/defaultStream.hpp"
 #include "utilities/macros.hpp"
 
 void GCArguments::initialize() {
   if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) {
     MarkSweepAlwaysCompactCount = 1;  // Move objects every gc.

@@ -52,5 +53,20 @@
   if (!ClassUnloading) {
     // If class unloading is disabled, also disable concurrent class unloading.
     FLAG_SET_CMDLINE(bool, ClassUnloadingWithConcurrentMark, false);
   }
 }
+
+bool GCArguments::check_args_consistency() {
+  bool status = true;
+  if (!FLAG_IS_DEFAULT(AllocateHeapAt) && !FLAG_IS_DEFAULT(AllocateOldGenAt)) {
+    jio_fprintf(defaultStream::error_stream(),
+      "AllocateHeapAt and AllocateOldGenAt cannot be used together.\n");
+    status = false;
+  }
+  if (!FLAG_IS_DEFAULT(AllocateOldGenAt) && (UseSerialGC || UseConcMarkSweepGC || UseEpsilonGC || UseZGC)) {
+    jio_fprintf(defaultStream::error_stream(),
+      "AllocateOldGenAt not supported for selected GC.\n");
+    status = false;
+  }
+  return status;
+}