src/share/vm/runtime/arguments.cpp

*** 1783,1792 ****
--- 1783,1805 ----
      set_client_compilation_mode();
    }
  }
  #endif //TIERED
  
+ void Arguments::set_heap_base_min_address() {
+ #if defined(SOLARIS)
+   // can safely use 1g of c heap for Direct Memory Buffer,
+   // rest can be used by java needs, 1g on amd64, 5g on sparcv9
+   // only when HeapBaseMinAddress is not set manually
+   if (UseCompressedOops && FLAG_IS_CMDLINE(MaxDirectMemorySize) && !FLAG_IS_CMDLINE(HeapBaseMinAddress)) {
+     if (MaxDirectMemorySize > 1 * G) {
+       FLAG_SET_ERGO(size_t, HeapBaseMinAddress, MaxDirectMemorySize + HeapBaseMinAddress - 1 * G);
+     }
+   }
+ #endif
+ }
+ 
  void Arguments::select_gc_ergonomically() {
  #if INCLUDE_ALL_GCS
    if (os::is_server_class_machine()) {
      FLAG_SET_ERGO_IF_DEFAULT(bool, UseG1GC, true);
    } else {
*** 1871,1880 ****
--- 1884,1897 ----
  
    // set_use_compressed_klass_ptrs() must be called after calling
    // set_use_compressed_oops().
    set_use_compressed_klass_ptrs();
  
+   // check that HeapBaseMinAddress doesn't limit memory allocations for
+   // direct memory buffer on solaris
+   set_heap_base_min_address();
+ 
    // Also checks that certain machines are slower with compressed oops
    // in vm_version initialization code.
  #endif // _LP64
  #endif // !ZERO