Add system call at monitor_enter

[Feng Xian]

 Hi,

 Sorry I used a wrong subject in my last post. So I re-post it again.

  I am doing a project which needs to make a system call at
 monitor_enter bytecode and monitor_exit bytecode. The system call is
 made by myself, which is used to inform the kernel of monitor events.
 Currently, I inserted the system call at
 ObjectSynchronizer::fast_enter(). Will it cause any problem since the
 code comments say that the implementation is extremely sensitive to
 race condition?
  Thanks!

 Feng




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