Mercurial > hg > truffle
diff src/share/vm/oops/methodData.cpp @ 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 | 1a43981d86ea |
| children | 62c54fcc0a35 |
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--- a/src/share/vm/oops/methodData.cpp Sat Mar 22 00:26:48 2014 +0400 +++ b/src/share/vm/oops/methodData.cpp Thu Mar 20 17:49:27 2014 -0700 @@ -24,6 +24,7 @@ #include "precompiled.hpp" #include "classfile/systemDictionary.hpp" +#include "compiler/compilerOracle.hpp" #include "interpreter/bytecode.hpp" #include "interpreter/bytecodeStream.hpp" #include "interpreter/linkResolver.hpp" @@ -1148,6 +1149,21 @@ _highest_osr_comp_level = 0; _would_profile = true; +#if INCLUDE_RTM_OPT + _rtm_state = NoRTM; // No RTM lock eliding by default + if (UseRTMLocking && + !CompilerOracle::has_option_string(_method, "NoRTMLockEliding")) { + if (CompilerOracle::has_option_string(_method, "UseRTMLockEliding") || !UseRTMDeopt) { + // Generate RTM lock eliding code without abort ratio calculation code. + _rtm_state = UseRTM; + } else if (UseRTMDeopt) { + // Generate RTM lock eliding code and include abort ratio calculation + // code if UseRTMDeopt is on. + _rtm_state = ProfileRTM; + } + } +#endif + // Initialize flags and trap history. _nof_decompiles = 0; _nof_overflow_recompiles = 0;