src/cpu/x86/vm/globals_x86.hpp

rev 5968 : 8031320: Use Intel RTM instructions for locks
Summary: Use RTM for inflated locks and stack locks.
Reviewed-by: iveresov, twisti, roland, dcubed

*** 126,135 ****
--- 126,171 ----
            "Use SSE2 MOVDQU instruction for Arraycopy")                      \
                                                                              \
    product(bool, UseFastStosb, false,                                        \
            "Use fast-string operation for zeroing: rep stosb")               \
                                                                              \
+   /* Use Restricted Transactional Memory for lock eliding */                \
+   experimental(bool, UseRTMLocking, false,                                  \
+           "Enable RTM lock eliding for inflated locks in compiled code")    \
+                                                                             \
+   experimental(bool, UseRTMForStackLocks, false,                            \
+           "Enable RTM lock eliding for stack locks in compiled code")       \
+                                                                             \
+   experimental(bool, UseRTMDeopt, false,                                    \
+           "Perform deopt and recompilation based on RTM abort ratio")       \
+                                                                             \
+   experimental(uintx, RTMRetryCount, 5,                                     \
+           "Number of RTM retries on lock abort or busy")                    \
+                                                                             \
+   experimental(intx, RTMSpinLoopCount, 100,                                 \
+           "Spin count for lock to become free before RTM retry")            \
+                                                                             \
+   experimental(intx, RTMAbortThreshold, 1000,                               \
+           "Calculate abort ratio after this number of aborts")              \
+                                                                             \
+   experimental(intx, RTMLockingThreshold, 10000,                            \
+           "Lock count at which to do RTM lock eliding without "             \
+           "abort ratio calculation")                                        \
+                                                                             \
+   experimental(intx, RTMAbortRatio, 50,                                     \
+           "Lock abort ratio at which to stop use RTM lock eliding")         \
+                                                                             \
+   experimental(intx, RTMTotalCountIncrRate, 64,                             \
+           "Increment total RTM attempted lock count once every n times")    \
+                                                                             \
+   experimental(intx, RTMLockingCalculationDelay, 0,                         \
+           "Number of milliseconds to wait before start calculating aborts " \
+           "for RTM locking")                                                \
+                                                                             \
+   experimental(bool, UseRTMXendForLockBusy, false,                          \
+           "Use RTM Xend instead of Xabort when lock busy")                  \
+                                                                             \
    /* assembler */                                                           \
    product(bool, Use486InstrsOnly, false,                                    \
            "Use 80486 Compliant instruction subset")                         \
                                                                              \
    product(bool, UseCountLeadingZerosInstruction, false,                     \