Mercurial > hg > truffle
diff src/cpu/x86/vm/globals_x86.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 | 8a8ff6b577ed |
| children | 62c54fcc0a35 |
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--- a/src/cpu/x86/vm/globals_x86.hpp Sat Mar 22 00:26:48 2014 +0400 +++ b/src/cpu/x86/vm/globals_x86.hpp Thu Mar 20 17:49:27 2014 -0700 @@ -128,6 +128,42 @@ 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") \