763 range(min_intx, max_intx) \
764 \
765 product(bool, EagerXrunInit, false, \
766 "Eagerly initialize -Xrun libraries; allows startup profiling, " \
767 "but not all -Xrun libraries may support the state of the VM " \
768 "at this time") \
769 \
770 product(bool, PreserveAllAnnotations, false, \
771 "Preserve RuntimeInvisibleAnnotations as well " \
772 "as RuntimeVisibleAnnotations") \
773 \
774 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \
775 "Number of OutOfMemoryErrors preallocated with backtrace") \
776 \
777 product(bool, UseXMMForArrayCopy, false, \
778 "Use SSE2 MOVQ instruction for Arraycopy") \
779 \
780 notproduct(bool, PrintFieldLayout, false, \
781 "Print field layout for each class") \
782 \
783 /* Need to limit the extent of the padding to reasonable size. */\
784 /* 8K is well beyond the reasonable HW cache line size, even with */\
785 /* aggressive prefetching, while still leaving the room for segregating */\
786 /* among the distinct pages. */\
787 product(intx, ContendedPaddingWidth, 128, \
788 "How many bytes to pad the fields/classes marked @Contended with")\
789 range(0, 8192) \
790 constraint(ContendedPaddingWidthConstraintFunc,AfterErgo) \
791 \
792 product(bool, EnableContended, true, \
793 "Enable @Contended annotation support") \
794 \
795 product(bool, RestrictContended, true, \
796 "Restrict @Contended to trusted classes") \
797 \
798 product(intx, DiagnoseSyncOnValueBasedClasses, 0, DIAGNOSTIC, \
799 "Detect and take action upon identifying synchronization on " \
800 "value based classes. Modes: " \
801 "0: off; " \
802 "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, UseEmptySlotsInSupers, true, \
2037 "Allow allocating fields in empty slots of super-classes") \
2038 \
2039 product(bool, DeoptimizeNMethodBarriersALot, false, DIAGNOSTIC, \
2040 "Make nmethod barriers deoptimise a lot.") \
2041 \
2042 develop(bool, VerifyCrossModifyFence, \
2043 false AARCH64_ONLY(DEBUG_ONLY(||true)), \
2044 "Mark all threads after a safepoint, and clear on a modify " \
2045 "fence. Add cleanliness checks.") \
2046 \
2047 develop(bool, TraceOptimizedUpcallStubs, false, \
2048 "Trace optimized upcall stub generation") \
2049
2050 // end of RUNTIME_FLAGS
2051
2052 DECLARE_FLAGS(LP64_RUNTIME_FLAGS)
2053 DECLARE_ARCH_FLAGS(ARCH_FLAGS)
2054 DECLARE_FLAGS(RUNTIME_FLAGS)
2055 DECLARE_FLAGS(RUNTIME_OS_FLAGS)
|
763 range(min_intx, max_intx) \
764 \
765 product(bool, EagerXrunInit, false, \
766 "Eagerly initialize -Xrun libraries; allows startup profiling, " \
767 "but not all -Xrun libraries may support the state of the VM " \
768 "at this time") \
769 \
770 product(bool, PreserveAllAnnotations, false, \
771 "Preserve RuntimeInvisibleAnnotations as well " \
772 "as RuntimeVisibleAnnotations") \
773 \
774 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \
775 "Number of OutOfMemoryErrors preallocated with backtrace") \
776 \
777 product(bool, UseXMMForArrayCopy, false, \
778 "Use SSE2 MOVQ instruction for Arraycopy") \
779 \
780 notproduct(bool, PrintFieldLayout, false, \
781 "Print field layout for each class") \
782 \
783 notproduct(bool, PrintInlineLayout, false, \
784 "Print field layout for each inline type") \
785 \
786 notproduct(bool, PrintFlatArrayLayout, false, \
787 "Print array layout for each inline type array") \
788 \
789 product(intx, FlatArrayElementMaxSize, -1, \
790 "Max size for flattening inline array elements, <0 no limit") \
791 \
792 product(intx, InlineFieldMaxFlatSize, 128, \
793 "Max size for flattening inline type fields, <0 no limit") \
794 \
795 product(intx, FlatArrayElementMaxOops, 4, \
796 "Max nof embedded object references in an inline type to flatten, <0 no limit") \
797 \
798 product(bool, InlineArrayAtomicAccess, false, \
799 "Atomic inline array accesses by-default, for all inline arrays") \
800 \
801 /* Need to limit the extent of the padding to reasonable size. */\
802 /* 8K is well beyond the reasonable HW cache line size, even with */\
803 /* aggressive prefetching, while still leaving the room for segregating */\
804 /* among the distinct pages. */\
805 product(intx, ContendedPaddingWidth, 128, \
806 "How many bytes to pad the fields/classes marked @Contended with")\
807 range(0, 8192) \
808 constraint(ContendedPaddingWidthConstraintFunc,AfterErgo) \
809 \
810 product(bool, EnableContended, true, \
811 "Enable @Contended annotation support") \
812 \
813 product(bool, RestrictContended, true, \
814 "Restrict @Contended to trusted classes") \
815 \
816 product(intx, DiagnoseSyncOnValueBasedClasses, 0, DIAGNOSTIC, \
817 "Detect and take action upon identifying synchronization on " \
818 "value based classes. Modes: " \
819 "0: off; " \
820 "1: exit with fatal error; " \
2034 "On internal errors, include registers in error report.") \
2035 \
2036 product(bool, UseSwitchProfiling, true, DIAGNOSTIC, \
2037 "leverage profiling for table/lookup switch") \
2038 \
2039 develop(bool, TraceMemoryWriteback, false, \
2040 "Trace memory writeback operations") \
2041 \
2042 JFR_ONLY(product(bool, FlightRecorder, false, \
2043 "(Deprecated) Enable Flight Recorder")) \
2044 \
2045 JFR_ONLY(product(ccstr, FlightRecorderOptions, NULL, \
2046 "Flight Recorder options")) \
2047 \
2048 JFR_ONLY(product(ccstr, StartFlightRecording, NULL, \
2049 "Start flight recording with options")) \
2050 \
2051 product(bool, UseFastUnorderedTimeStamps, false, EXPERIMENTAL, \
2052 "Use platform unstable time where supported for timestamps only") \
2053 \
2054 product(bool, EnableValhalla, true, \
2055 "Enable experimental Valhalla features") \
2056 \
2057 product_pd(bool, InlineTypePassFieldsAsArgs, \
2058 "Pass each inline type field as an argument at calls") \
2059 \
2060 product_pd(bool, InlineTypeReturnedAsFields, \
2061 "Return fields instead of an inline type reference") \
2062 \
2063 develop(bool, StressInlineTypeReturnedAsFields, false, \
2064 "Stress return of fields instead of an inline type reference") \
2065 \
2066 product(bool, UseArrayMarkWordCheck, NOT_LP64(false) LP64_ONLY(true), \
2067 "Use bits in the mark word to check for flat/null-free arrays") \
2068 \
2069 product(ccstrlist, ForceNonTearable, "", DIAGNOSTIC, \
2070 "List of inline classes which are forced to be atomic " \
2071 "(whitespace and commas separate names, " \
2072 "and leading and trailing stars '*' are wildcards)") \
2073 \
2074 product(bool, UseEmptySlotsInSupers, true, \
2075 "Allow allocating fields in empty slots of super-classes") \
2076 \
2077 product(bool, DeoptimizeNMethodBarriersALot, false, DIAGNOSTIC, \
2078 "Make nmethod barriers deoptimise a lot.") \
2079 \
2080 develop(bool, VerifyCrossModifyFence, \
2081 false AARCH64_ONLY(DEBUG_ONLY(||true)), \
2082 "Mark all threads after a safepoint, and clear on a modify " \
2083 "fence. Add cleanliness checks.") \
2084 \
2085 develop(bool, TraceOptimizedUpcallStubs, false, \
2086 "Trace optimized upcall stub generation") \
2087
2088 // end of RUNTIME_FLAGS
2089
2090 DECLARE_FLAGS(LP64_RUNTIME_FLAGS)
2091 DECLARE_ARCH_FLAGS(ARCH_FLAGS)
2092 DECLARE_FLAGS(RUNTIME_FLAGS)
2093 DECLARE_FLAGS(RUNTIME_OS_FLAGS)
|