Mercurial > hg > truffle
diff src/share/vm/code/nmethod.hpp @ 17780:606acabe7b5c
8031320: Use Intel RTM instructions for locks
Summary: Use RTM for inflated locks and stack locks.
Reviewed-by: iveresov, twisti, roland, dcubed
| author | kvn |
|---|---|
| date | Thu, 20 Mar 2014 17:49:27 -0700 |
| parents | df832bd8edb9 |
| children | 52b4284cb496 63e0c47ca943 |
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--- a/src/share/vm/code/nmethod.hpp Sat Mar 22 00:26:48 2014 +0400 +++ b/src/share/vm/code/nmethod.hpp Thu Mar 20 17:49:27 2014 -0700 @@ -193,6 +193,12 @@ jbyte _scavenge_root_state; +#if INCLUDE_RTM_OPT + // RTM state at compile time. Used during deoptimization to decide + // whether to restart collecting RTM locking abort statistic again. + RTMState _rtm_state; +#endif + // Nmethod Flushing lock. If non-zero, then the nmethod is not removed // and is not made into a zombie. However, once the nmethod is made into // a zombie, it will be locked one final time if CompiledMethodUnload @@ -414,6 +420,12 @@ bool is_zombie() const { return _state == zombie; } bool is_unloaded() const { return _state == unloaded; } +#if INCLUDE_RTM_OPT + // rtm state accessing and manipulating + RTMState rtm_state() const { return _rtm_state; } + void set_rtm_state(RTMState state) { _rtm_state = state; } +#endif + // Make the nmethod non entrant. The nmethod will continue to be // alive. It is used when an uncommon trap happens. Returns true // if this thread changed the state of the nmethod or false if