756 range(min_intx, max_intx) \
757 \
758 product(bool, EagerXrunInit, false, \
759 "Eagerly initialize -Xrun libraries; allows startup profiling, " \
760 "but not all -Xrun libraries may support the state of the VM " \
761 "at this time") \
762 \
763 product(bool, PreserveAllAnnotations, false, \
764 "Preserve RuntimeInvisibleAnnotations as well " \
765 "as RuntimeVisibleAnnotations") \
766 \
767 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \
768 "Number of OutOfMemoryErrors preallocated with backtrace") \
769 \
770 product(bool, UseXMMForArrayCopy, false, \
771 "Use SSE2 MOVQ instruction for Arraycopy") \
772 \
773 notproduct(bool, PrintFieldLayout, false, \
774 "Print field layout for each class") \
775 \
776 /* Need to limit the extent of the padding to reasonable size. */\
777 /* 8K is well beyond the reasonable HW cache line size, even with */\
778 /* aggressive prefetching, while still leaving the room for segregating */\
779 /* among the distinct pages. */\
780 product(intx, ContendedPaddingWidth, 128, \
781 "How many bytes to pad the fields/classes marked @Contended with")\
782 range(0, 8192) \
783 constraint(ContendedPaddingWidthConstraintFunc,AfterErgo) \
784 \
785 product(bool, EnableContended, true, \
786 "Enable @Contended annotation support") \
787 \
788 product(bool, RestrictContended, true, \
789 "Restrict @Contended to trusted classes") \
790 \
791 product(intx, DiagnoseSyncOnValueBasedClasses, 0, DIAGNOSTIC, \
792 "Detect and take action upon identifying synchronization on " \
793 "value based classes. Modes: " \
794 "0: off; " \
795 "1: exit with fatal error; " \
1998 "On internal errors, include registers in error report.") \
1999 \
2000 product(bool, UseSwitchProfiling, true, DIAGNOSTIC, \
2001 "leverage profiling for table/lookup switch") \
2002 \
2003 develop(bool, TraceMemoryWriteback, false, \
2004 "Trace memory writeback operations") \
2005 \
2006 JFR_ONLY(product(bool, FlightRecorder, false, \
2007 "(Deprecated) Enable Flight Recorder")) \
2008 \
2009 JFR_ONLY(product(ccstr, FlightRecorderOptions, NULL, \
2010 "Flight Recorder options")) \
2011 \
2012 JFR_ONLY(product(ccstr, StartFlightRecording, NULL, \
2013 "Start flight recording with options")) \
2014 \
2015 product(bool, UseFastUnorderedTimeStamps, false, EXPERIMENTAL, \
2016 "Use platform unstable time where supported for timestamps only") \
2017 \
2018 product(bool, UseEmptySlotsInSupers, true, \
2019 "Allow allocating fields in empty slots of super-classes") \
2020 \
2021 product(bool, DeoptimizeNMethodBarriersALot, false, DIAGNOSTIC, \
2022 "Make nmethod barriers deoptimise a lot.") \
2023 \
2024 develop(bool, VerifyCrossModifyFence, \
2025 false AARCH64_ONLY(DEBUG_ONLY(||true)), \
2026 "Mark all threads after a safepoint, and clear on a modify " \
2027 "fence. Add cleanliness checks.") \
2028 \
2029 develop(bool, TraceOptimizedUpcallStubs, false, \
2030 "Trace optimized upcall stub generation") \
2031
2032 // end of RUNTIME_FLAGS
2033
2034 DECLARE_FLAGS(LP64_RUNTIME_FLAGS)
2035 DECLARE_ARCH_FLAGS(ARCH_FLAGS)
2036 DECLARE_FLAGS(RUNTIME_FLAGS)
2037 DECLARE_FLAGS(RUNTIME_OS_FLAGS)
|
756 range(min_intx, max_intx) \
757 \
758 product(bool, EagerXrunInit, false, \
759 "Eagerly initialize -Xrun libraries; allows startup profiling, " \
760 "but not all -Xrun libraries may support the state of the VM " \
761 "at this time") \
762 \
763 product(bool, PreserveAllAnnotations, false, \
764 "Preserve RuntimeInvisibleAnnotations as well " \
765 "as RuntimeVisibleAnnotations") \
766 \
767 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \
768 "Number of OutOfMemoryErrors preallocated with backtrace") \
769 \
770 product(bool, UseXMMForArrayCopy, false, \
771 "Use SSE2 MOVQ instruction for Arraycopy") \
772 \
773 notproduct(bool, PrintFieldLayout, false, \
774 "Print field layout for each class") \
775 \
776 notproduct(bool, PrintInlineLayout, false, \
777 "Print field layout for each inline type") \
778 \
779 notproduct(bool, PrintFlatArrayLayout, false, \
780 "Print array layout for each inline type array") \
781 \
782 product(intx, FlatArrayElementMaxSize, -1, \
783 "Max size for flattening inline array elements, <0 no limit") \
784 \
785 product(intx, InlineFieldMaxFlatSize, 128, \
786 "Max size for flattening inline type fields, <0 no limit") \
787 \
788 product(intx, FlatArrayElementMaxOops, 4, \
789 "Max nof embedded object references in an inline type to flatten, <0 no limit") \
790 \
791 product(bool, InlineArrayAtomicAccess, false, \
792 "Atomic inline array accesses by-default, for all inline arrays") \
793 \
794 /* Need to limit the extent of the padding to reasonable size. */\
795 /* 8K is well beyond the reasonable HW cache line size, even with */\
796 /* aggressive prefetching, while still leaving the room for segregating */\
797 /* among the distinct pages. */\
798 product(intx, ContendedPaddingWidth, 128, \
799 "How many bytes to pad the fields/classes marked @Contended with")\
800 range(0, 8192) \
801 constraint(ContendedPaddingWidthConstraintFunc,AfterErgo) \
802 \
803 product(bool, EnableContended, true, \
804 "Enable @Contended annotation support") \
805 \
806 product(bool, RestrictContended, true, \
807 "Restrict @Contended to trusted classes") \
808 \
809 product(intx, DiagnoseSyncOnValueBasedClasses, 0, DIAGNOSTIC, \
810 "Detect and take action upon identifying synchronization on " \
811 "value based classes. Modes: " \
812 "0: off; " \
813 "1: exit with fatal error; " \
2016 "On internal errors, include registers in error report.") \
2017 \
2018 product(bool, UseSwitchProfiling, true, DIAGNOSTIC, \
2019 "leverage profiling for table/lookup switch") \
2020 \
2021 develop(bool, TraceMemoryWriteback, false, \
2022 "Trace memory writeback operations") \
2023 \
2024 JFR_ONLY(product(bool, FlightRecorder, false, \
2025 "(Deprecated) Enable Flight Recorder")) \
2026 \
2027 JFR_ONLY(product(ccstr, FlightRecorderOptions, NULL, \
2028 "Flight Recorder options")) \
2029 \
2030 JFR_ONLY(product(ccstr, StartFlightRecording, NULL, \
2031 "Start flight recording with options")) \
2032 \
2033 product(bool, UseFastUnorderedTimeStamps, false, EXPERIMENTAL, \
2034 "Use platform unstable time where supported for timestamps only") \
2035 \
2036 product(bool, EnableValhalla, true, \
2037 "Enable experimental Valhalla features") \
2038 \
2039 product_pd(bool, InlineTypePassFieldsAsArgs, \
2040 "Pass each inline type field as an argument at calls") \
2041 \
2042 product_pd(bool, InlineTypeReturnedAsFields, \
2043 "Return fields instead of an inline type reference") \
2044 \
2045 develop(bool, StressInlineTypeReturnedAsFields, false, \
2046 "Stress return of fields instead of an inline type reference") \
2047 \
2048 product(bool, UseArrayMarkWordCheck, NOT_LP64(false) LP64_ONLY(true), \
2049 "Use bits in the mark word to check for flat/null-free arrays") \
2050 \
2051 product(ccstrlist, ForceNonTearable, "", DIAGNOSTIC, \
2052 "List of inline classes which are forced to be atomic " \
2053 "(whitespace and commas separate names, " \
2054 "and leading and trailing stars '*' are wildcards)") \
2055 \
2056 product(bool, UseEmptySlotsInSupers, true, \
2057 "Allow allocating fields in empty slots of super-classes") \
2058 \
2059 product(bool, DeoptimizeNMethodBarriersALot, false, DIAGNOSTIC, \
2060 "Make nmethod barriers deoptimise a lot.") \
2061 \
2062 develop(bool, VerifyCrossModifyFence, \
2063 false AARCH64_ONLY(DEBUG_ONLY(||true)), \
2064 "Mark all threads after a safepoint, and clear on a modify " \
2065 "fence. Add cleanliness checks.") \
2066 \
2067 develop(bool, TraceOptimizedUpcallStubs, false, \
2068 "Trace optimized upcall stub generation") \
2069
2070 // end of RUNTIME_FLAGS
2071
2072 DECLARE_FLAGS(LP64_RUNTIME_FLAGS)
2073 DECLARE_ARCH_FLAGS(ARCH_FLAGS)
2074 DECLARE_FLAGS(RUNTIME_FLAGS)
2075 DECLARE_FLAGS(RUNTIME_OS_FLAGS)
|