--- a/hotspot/src/share/vm/runtime/deoptimization.cpp Wed Mar 19 11:37:58 2014 -0700
+++ b/hotspot/src/share/vm/runtime/deoptimization.cpp Thu Mar 20 17:49:27 2014 -0700
@@ -1288,7 +1288,8 @@
gather_statistics(reason, action, trap_bc);
// Ensure that we can record deopt. history:
- bool create_if_missing = ProfileTraps;
+ // Need MDO to record RTM code generation state.
+ bool create_if_missing = ProfileTraps RTM_OPT_ONLY( || UseRTMLocking );
MethodData* trap_mdo =
get_method_data(thread, trap_method, create_if_missing);
@@ -1569,6 +1570,17 @@
if (tstate1 != tstate0)
pdata->set_trap_state(tstate1);
}
+
+#if INCLUDE_RTM_OPT
+ // Restart collecting RTM locking abort statistic if the method
+ // is recompiled for a reason other than RTM state change.
+ // Assume that in new recompiled code the statistic could be different,
+ // for example, due to different inlining.
+ if ((reason != Reason_rtm_state_change) && (trap_mdo != NULL) &&
+ UseRTMDeopt && (nm->rtm_state() != ProfileRTM)) {
+ trap_mdo->atomic_set_rtm_state(ProfileRTM);
+ }
+#endif
}
if (inc_recompile_count) {
@@ -1826,7 +1838,8 @@
"age",
"predicate",
"loop_limit_check",
- "speculate_class_check"
+ "speculate_class_check",
+ "rtm_state_change"
};
const char* Deoptimization::_trap_action_name[Action_LIMIT] = {
// Note: Keep this in sync. with enum DeoptAction.