src/share/vm/runtime/os.hpp

@@ -309,10 +309,14 @@
                                size_t alignment_hint = 0);
   static char*  reserve_memory(size_t bytes, char* addr,
                                size_t alignment_hint, MEMFLAGS flags);
   static char*  reserve_memory_aligned(size_t size, size_t alignment);
   static char*  attempt_reserve_memory_at(size_t bytes, char* addr);
+
+  // Map the given address range to a temporary file created at the specified directory.
+  // The address range must already be reserved for guaranteed success. If it not reserved, their could be an error while mapping leading to JVM shutdown
+  static bool   map_memory_to_file(char* base, size_t size, const char* backing_filename);
   static void   split_reserved_memory(char *base, size_t size,
                                       size_t split, bool realloc);
   static bool   commit_memory(char* addr, size_t bytes, bool executable);
   static bool   commit_memory(char* addr, size_t size, size_t alignment_hint,
                               bool executable);