Mercurial > hg > truffle
view src/share/vm/gc_implementation/g1/g1StringDedupStat.hpp @ 20504:6948da6d7c13
8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
Summary: Remove -XX:-G1DeferredRSUpdate functionality as it is racy. During evacuation failure handling, threads where evacuation failure handling occurred may try to add remembered sets to regions which remembered sets are currently being scanned. The iterator to handle the remembered set scan does not support addition of entries during scan and so may skip valid references.
Reviewed-by: iveresov, brutisso, mgerdin
author | tschatzl |
---|---|
date | Tue, 30 Sep 2014 09:44:36 +0200 |
parents | 595c0f60d50d |
children |
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/* * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1STRINGDEDUPSTAT_HPP #define SHARE_VM_GC_IMPLEMENTATION_G1_G1STRINGDEDUPSTAT_HPP #include "memory/allocation.hpp" #include "runtime/os.hpp" // Macros for GC log output formating #define G1_STRDEDUP_OBJECTS_FORMAT UINTX_FORMAT_W(12) #define G1_STRDEDUP_TIME_FORMAT "%1.7lf secs" #define G1_STRDEDUP_PERCENT_FORMAT "%5.1lf%%" #define G1_STRDEDUP_PERCENT_FORMAT_NS "%.1lf%%" #define G1_STRDEDUP_BYTES_FORMAT "%8.1lf%s" #define G1_STRDEDUP_BYTES_FORMAT_NS "%.1lf%s" #define G1_STRDEDUP_BYTES_PARAM(bytes) byte_size_in_proper_unit((double)(bytes)), proper_unit_for_byte_size((bytes)) // // Statistics gathered by the deduplication thread. // class G1StringDedupStat : public StackObj { private: // Counters uintx _inspected; uintx _skipped; uintx _hashed; uintx _known; uintx _new; uintx _new_bytes; uintx _deduped; uintx _deduped_bytes; uintx _deduped_young; uintx _deduped_young_bytes; uintx _deduped_old; uintx _deduped_old_bytes; uintx _idle; uintx _exec; uintx _block; // Time spent by the deduplication thread in different phases double _start; double _idle_elapsed; double _exec_elapsed; double _block_elapsed; public: G1StringDedupStat(); void inc_inspected() { _inspected++; } void inc_skipped() { _skipped++; } void inc_hashed() { _hashed++; } void inc_known() { _known++; } void inc_new(uintx bytes) { _new++; _new_bytes += bytes; } void inc_deduped_young(uintx bytes) { _deduped++; _deduped_bytes += bytes; _deduped_young++; _deduped_young_bytes += bytes; } void inc_deduped_old(uintx bytes) { _deduped++; _deduped_bytes += bytes; _deduped_old++; _deduped_old_bytes += bytes; } void mark_idle() { _start = os::elapsedTime(); _idle++; } void mark_exec() { double now = os::elapsedTime(); _idle_elapsed = now - _start; _start = now; _exec++; } void mark_block() { double now = os::elapsedTime(); _exec_elapsed += now - _start; _start = now; _block++; } void mark_unblock() { double now = os::elapsedTime(); _block_elapsed += now - _start; _start = now; } void mark_done() { double now = os::elapsedTime(); _exec_elapsed += now - _start; } void add(const G1StringDedupStat& stat); static void print_summary(outputStream* st, const G1StringDedupStat& last_stat, const G1StringDedupStat& total_stat); static void print_statistics(outputStream* st, const G1StringDedupStat& stat, bool total); }; #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1STRINGDEDUPSTAT_HPP