Mercurial > hg > graal-jvmci-8
view src/share/vm/gc_implementation/shared/ageTable.cpp @ 807:d44bdab1c03d
6843694: G1: assert(index < _vs.committed_size(),"bad index"), g1BlockOffsetTable.inline.hpp:55
Summary: For heaps larger than 32Gb, the number of heap regions overflows the data type used to hold the region index in the SparsePRT structure. Changed the region indexes, card indexes, and RSet hash table buckets to ints and added some size overflow guarantees.
Reviewed-by: ysr, tonyp
author | johnc |
---|---|
date | Thu, 11 Jun 2009 17:19:33 -0700 |
parents | 0fbdb4381b99 |
children | c18cbe5936b8 |
line wrap: on
line source
/* * Copyright 1997-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ /* Copyright 1992-2009 Sun Microsystems, Inc. and Stanford University. See the LICENSE file for license information. */ # include "incls/_precompiled.incl" # include "incls/_ageTable.cpp.incl" ageTable::ageTable(bool global) { clear(); if (UsePerfData && global) { ResourceMark rm; EXCEPTION_MARK; const char* agetable_ns = "generation.0.agetable"; const char* bytes_ns = PerfDataManager::name_space(agetable_ns, "bytes"); for(int age = 0; age < table_size; age ++) { char age_name[10]; jio_snprintf(age_name, sizeof(age_name), "%2.2d", age); const char* cname = PerfDataManager::counter_name(bytes_ns, age_name); _perf_sizes[age] = PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes, CHECK); } const char* cname = PerfDataManager::counter_name(agetable_ns, "size"); PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_None, table_size, CHECK); } } void ageTable::clear() { for (size_t* p = sizes; p < sizes + table_size; ++p) { *p = 0; } } void ageTable::merge(ageTable* subTable) { for (int i = 0; i < table_size; i++) { sizes[i]+= subTable->sizes[i]; } } void ageTable::merge_par(ageTable* subTable) { for (int i = 0; i < table_size; i++) { Atomic::add_ptr(subTable->sizes[i], &sizes[i]); } } int ageTable::compute_tenuring_threshold(size_t survivor_capacity) { size_t desired_survivor_size = (size_t)((((double) survivor_capacity)*TargetSurvivorRatio)/100); size_t total = 0; int age = 1; assert(sizes[0] == 0, "no objects with age zero should be recorded"); while (age < table_size) { total += sizes[age]; // check if including objects of age 'age' made us pass the desired // size, if so 'age' is the new threshold if (total > desired_survivor_size) break; age++; } int result = age < MaxTenuringThreshold ? age : MaxTenuringThreshold; if (PrintTenuringDistribution || UsePerfData) { if (PrintTenuringDistribution) { gclog_or_tty->cr(); gclog_or_tty->print_cr("Desired survivor size %ld bytes, new threshold %d (max %d)", desired_survivor_size*oopSize, result, MaxTenuringThreshold); } total = 0; age = 1; while (age < table_size) { total += sizes[age]; if (sizes[age] > 0) { if (PrintTenuringDistribution) { gclog_or_tty->print_cr("- age %3d: %10ld bytes, %10ld total", age, sizes[age]*oopSize, total*oopSize); } } if (UsePerfData) { _perf_sizes[age]->set_value(sizes[age]*oopSize); } age++; } if (UsePerfData) { SharedHeap* sh = SharedHeap::heap(); CollectorPolicy* policy = sh->collector_policy(); GCPolicyCounters* gc_counters = policy->counters(); gc_counters->tenuring_threshold()->set_value(result); gc_counters->desired_survivor_size()->set_value( desired_survivor_size*oopSize); } } return result; }