RFR(T): 8251543: add mention of INFLATING() to share/oops/markWord.hpp header comment

[Daniel D. Daugherty]

Greetings,

I have a trivial comment addition to src/hotspot/share/oops/markWord.hpp.

Here's the bug:

     JDK-8251543 add mention of INFLATING() to share/oops/markWord.hpp 
header comment
     https://bugs.openjdk.java.net/browse/JDK-8251543

And here's the proposed fix:

$ hg diff
diff -r 73778bfbffe3 src/hotspot/share/oops/markWord.hpp
--- a/src/hotspot/share/oops/markWord.hpp    Thu Aug 13 10:02:35 2020 -0400
+++ b/src/hotspot/share/oops/markWord.hpp    Thu Aug 13 10:51:44 2020 -0400
@@ -86,6 +86,10 @@
  //    [ptr             | 11]  marked             used to mark an object
  //
  //    We assume that stack/thread pointers have the lowest two bits 
cleared.
+//
+//  - INFLATING() is a distinguished markword value that is used when
+//    inflating an existing stack lock into an ObjectMonitor. See below
+//    for is_being_inflated() and INFLATING().

  class BasicLock;
  class ObjectMonitor;
@@ -226,7 +230,7 @@
    bool is_being_inflated() const { return (value() == 0); }

    // Distinguished markword value - used when inflating over
-  // an existing stacklock.  0 indicates the markword is "BUSY".
+  // an existing stack lock.  0 indicates the markword is "BUSY".
    // Lockword mutators that use a LD...CAS idiom should always
    // check for and avoid overwriting a 0 value installed by some
    // other thread.  (They should spin or block instead.  The 0 value


Thanks, in advance, for any comments, questions or suggestions.

Dan