Mercurial > hg > truffle

diff src/share/vm/opto/runtime.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: 469216acdb28
children: b20a35eae442
--- a/src/share/vm/opto/runtime.hpp	Sat Mar 22 00:26:48 2014 +0400
+++ b/src/share/vm/opto/runtime.hpp	Thu Mar 20 17:49:27 2014 -0700
@@ -29,6 +29,7 @@
 #include "opto/machnode.hpp"
 #include "opto/type.hpp"
 #include "runtime/biasedLocking.hpp"
+#include "runtime/rtmLocking.hpp"
 #include "runtime/deoptimization.hpp"
 #include "runtime/vframe.hpp"
 
@@ -61,7 +62,8 @@
     NoTag,
     LockCounter,
     EliminatedLockCounter,
-    BiasedLockingCounter
+    BiasedLockingCounter,
+    RTMLockingCounter
   };
 
 private:
@@ -85,7 +87,7 @@
 
   NamedCounter* next() const    { return _next; }
   void set_next(NamedCounter* next) {
-    assert(_next == NULL, "already set");
+    assert(_next == NULL || next == NULL, "already set");
     _next = next;
   }
 
@@ -102,6 +104,18 @@
   BiasedLockingCounters* counters() { return &_counters; }
 };
 
+
+class RTMLockingNamedCounter : public NamedCounter {
+ private:
+ RTMLockingCounters _counters;
+
+ public:
+  RTMLockingNamedCounter(const char *n) :
+    NamedCounter(n, RTMLockingCounter), _counters() {}
+
+  RTMLockingCounters* counters() { return &_counters; }
+};
+
 typedef const TypeFunc*(*TypeFunc_generator)();
 
 class OptoRuntime : public AllStatic {