src/share/vm/utilities/globalDefinitions.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

*** 368,377 ****
--- 368,392 ----
  // Klass encoding metaspace max size
  const uint64_t KlassEncodingMetaspaceMax = (uint64_t(max_juint) + 1) << LogKlassAlignmentInBytes;
  
  // Machine dependent stuff
  
+ #if defined(X86) && defined(COMPILER2) && !defined(JAVASE_EMBEDDED)
+ // Include Restricted Transactional Memory lock eliding optimization
+ #define INCLUDE_RTM_OPT 1
+ #define RTM_OPT_ONLY(code) code
+ #else
+ #define INCLUDE_RTM_OPT 0
+ #define RTM_OPT_ONLY(code)
+ #endif
+ // States of Restricted Transactional Memory usage.
+ enum RTMState {
+   NoRTM      = 0x2, // Don't use RTM
+   UseRTM     = 0x1, // Use RTM
+   ProfileRTM = 0x0  // Use RTM with abort ratio calculation
+ };
+ 
  #ifdef TARGET_ARCH_x86
  # include "globalDefinitions_x86.hpp"
  #endif
  #ifdef TARGET_ARCH_sparc
  # include "globalDefinitions_sparc.hpp"