8012265: VM often crashes on solaris with a lot of memory

Summary: Increase HeapBaseMinAddress for G1 from 256m to 1g on Solaris x86
Reviewed-by: mgerdin, coleenp, kvn

src/share/vm/runtime/arguments.cpp

@@ -1566,6 +1566,15 @@ julong Arguments::limit_by_allocatable_memory(julong limit) {
   return result;
 }
 
+void Arguments::set_heap_base_min_address() {
+  if (FLAG_IS_DEFAULT(HeapBaseMinAddress) && UseG1GC && HeapBaseMinAddress < 1*G) {
+    // By default HeapBaseMinAddress is 2G on all platforms except Solaris x86.
+    // G1 currently needs a lot of C-heap, so on Solaris we have to give G1
+    // some extra space for the C-heap compared to other collectors.
+    FLAG_SET_ERGO(uintx, HeapBaseMinAddress, 1*G);
+  }
+}
+
 void Arguments::set_heap_size() {
   if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) {
     // Deprecated flag
@@ -3525,6 +3534,8 @@ jint Arguments::parse(const JavaVMInitArgs* args) {
     }
   }
 
+  set_heap_base_min_address();
+
   // Set heap size based on available physical memory
   set_heap_size();
 

src/share/vm/runtime/arguments.hpp

@@ -315,6 +315,8 @@ class Arguments : AllStatic {
   // limits the given memory size by the maximum amount of memory this process is
   // currently allowed to allocate or reserve.
   static julong limit_by_allocatable_memory(julong size);
+  // Setup HeapBaseMinAddress
+  static void set_heap_base_min_address();
   // Setup heap size
   static void set_heap_size();
   // Based on automatic selection criteria, should the