Mercurial > hg > graal-compiler
comparison src/share/vm/runtime/globals.hpp @ 1166:7b0e9cba0307
6896647: card marks can be deferred too long
Summary: Deferred card marks are now flushed during the gc prologue. Parallel[Scavege,OldGC] and SerialGC no longer defer card marks generated by COMPILER2 as a result of ReduceInitialCardMarks. For these cases, introduced a diagnostic option to defer the card marks, only for the purposes of testing and diagnostics. CMS and G1 continue to defer card marks. Potential performance concern related to single-threaded flushing of deferred card marks in the gc prologue will be addressed in the future.
Reviewed-by: never, johnc
| author | ysr |
|---|---|
| date | Wed, 13 Jan 2010 15:26:39 -0800 |
| parents | 504830073409 |
| children | 22e27cceb7d8 |
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| 1165:2dd52dea6d28 | 1166:7b0e9cba0307 |
|---|---|
| 2013 "Verify memory system during GC (between phases)") \ | 2013 "Verify memory system during GC (between phases)") \ |
| 2014 \ | 2014 \ |
| 2015 diagnostic(bool, GCParallelVerificationEnabled, true, \ | 2015 diagnostic(bool, GCParallelVerificationEnabled, true, \ |
| 2016 "Enable parallel memory system verification") \ | 2016 "Enable parallel memory system verification") \ |
| 2017 \ | 2017 \ |
| 2018 diagnostic(bool, DeferInitialCardMark, false, \ | |
| 2019 "When +ReduceInitialCardMarks, explicitly defer any that " \ | |
| 2020 "may arise from new_pre_store_barrier") \ | |
| 2021 \ | |
| 2018 diagnostic(bool, VerifyRememberedSets, false, \ | 2022 diagnostic(bool, VerifyRememberedSets, false, \ |
| 2019 "Verify GC remembered sets") \ | 2023 "Verify GC remembered sets") \ |
| 2020 \ | 2024 \ |
| 2021 diagnostic(bool, VerifyObjectStartArray, true, \ | 2025 diagnostic(bool, VerifyObjectStartArray, true, \ |
| 2022 "Verify GC object start array if verify before/after") \ | 2026 "Verify GC object start array if verify before/after") \ |