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src/share/vm/runtime/os.hpp

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rev 7555 : imported patch 8067469-g1-ignores-alwayspretouch
rev 7556 : [mq]: david-erik-review

@@ -309,10 +309,14 @@
                                       size_t alignment_hint,
                                       bool executable, const char* mesg);
   static bool   uncommit_memory(char* addr, size_t bytes);
   static bool   release_memory(char* addr, size_t bytes);
 
+  // Touch memory pages that cover the memory range from start to end (exclusive)
+  // to make the OS back the memory range with actual memory.
+  // Current implementation may not touch the last page if unaligned addresses
+  // are passed.
   static void   pretouch_memory(char* start, char* end);
 
   enum ProtType { MEM_PROT_NONE, MEM_PROT_READ, MEM_PROT_RW, MEM_PROT_RWX };
   static bool   protect_memory(char* addr, size_t bytes, ProtType prot,
                                bool is_committed = true);
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