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8231264: Implementation of JEP 374: Disable biased-locking and deprecate all flags related to biased-locking

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Changed default value of UseBiasedLocking to false and deprecated related flags.

Reviewed-by: dholmes, dcubed
This commit is contained in:
Patricio Chilano Mateo 2020-05-13 15:47:10 +00:00
parent ca53ee2593
commit 398a2b3c37
5 changed files with 44 additions and 29 deletions
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8
src/hotspot/share/runtime/arguments.cpp
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@ -525,6 +525,14 @@ static SpecialFlag const special_jvm_flags[] = {
{ "PrintVMQWaitTime", JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
{ "UseNewFieldLayout", JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
{ "ForceNUMA", JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
{ "UseBiasedLocking", JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
{ "BiasedLockingStartupDelay", JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
{ "PrintBiasedLockingStatistics", JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
{ "BiasedLockingBulkRebiasThreshold", JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
{ "BiasedLockingBulkRevokeThreshold", JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
{ "BiasedLockingDecayTime", JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
{ "UseOptoBiasInlining", JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
{ "PrintPreciseBiasedLockingStatistics", JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
// --- Deprecated alias flags (see also aliased_jvm_flags) - sorted by obsolete_in then expired_in:
{ "DefaultMaxRAMFraction", JDK_Version::jdk(8), JDK_Version::undefined(), JDK_Version::undefined() },