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8031320: Use Intel RTM instructions for locks

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Use RTM for inflated locks and stack locks.

Reviewed-by: iveresov, twisti, roland, dcubed
This commit is contained in:
Vladimir Kozlov 2014-03-20 17:49:27 -07:00
parent 315e4838e9
commit 97a51c5c2a
46 changed files with 1251 additions and 87 deletions
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12
hotspot/src/share/vm/code/nmethod.hpp
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@ -193,6 +193,12 @@ class nmethod : public CodeBlob {
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 @@ class nmethod : public CodeBlob {
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