src/share/vm/runtime/arguments.cpp

@@ -1758,11 +1758,11 @@
                                           CollectorPolicy::compute_heap_alignment());
 }
 
 bool Arguments::gc_selected() {
 #if INCLUDE_ALL_GCS
-  return UseSerialGC || UseParallelGC || UseParallelOldGC || UseConcMarkSweepGC || UseG1GC;
+  return UseSerialGC || UseParallelGC || UseParallelOldGC || UseConcMarkSweepGC || UseG1GC || UseEpsilonGC;
 #else
   return UseSerialGC;
 #endif // INCLUDE_ALL_GCS
 }
 

@@ -1930,19 +1930,30 @@
   }
 
   log_trace(gc)("MarkStackSize: %uk  MarkStackSizeMax: %uk", (unsigned int) (MarkStackSize / K), (uint) (MarkStackSizeMax / K));
 }
 
+void Arguments::set_epsilon_flags() {
+  assert(UseEpsilonGC, "Error");
+
+  // Forcefully exit when OOME is detected. Nothing we can do at that point.
+  if (FLAG_IS_DEFAULT(ExitOnOutOfMemoryError)) {
+    FLAG_SET_DEFAULT(ExitOnOutOfMemoryError, true);
+  }
+}
+
 void Arguments::set_gc_specific_flags() {
 #if INCLUDE_ALL_GCS
   // Set per-collector flags
   if (UseParallelGC || UseParallelOldGC) {
     set_parallel_gc_flags();
   } else if (UseConcMarkSweepGC) {
     set_cms_and_parnew_gc_flags();
   } else if (UseG1GC) {
     set_g1_gc_flags();
+  } else if (UseEpsilonGC) {
+    set_epsilon_flags();
   }
   if (AssumeMP && !UseSerialGC) {
     if (FLAG_IS_DEFAULT(ParallelGCThreads) && ParallelGCThreads == 1) {
       warning("If the number of processors is expected to increase from one, then"
               " you should configure the number of parallel GC threads appropriately"

@@ -2302,10 +2313,11 @@
   uint i = 0;
   if (UseSerialGC)                       i++;
   if (UseConcMarkSweepGC)                i++;
   if (UseParallelGC || UseParallelOldGC) i++;
   if (UseG1GC)                           i++;
+  if (UseEpsilonGC)                      i++;
   if (i > 1) {
     jio_fprintf(defaultStream::error_stream(),
                 "Conflicting collector combinations in option list; "
                 "please refer to the release notes for the combinations "
                 "allowed\n");