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7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap

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Refactor G1's hot card cache and card counts table into their own files. Simplify the card counts table, including removing the encoding of the card index in each entry. The card counts table now has a 1:1 correspondence with the cards spanned by heap. Space for the card counts table is reserved from virtual memory (rather than C heap) during JVM startup and is committed/expanded when the heap is expanded. Changes were also reviewed-by Vitaly Davidovich.

Reviewed-by: tschatzl, jmasa
This commit is contained in:
John Cuthbertson 2013-05-09 11:16:39 -07:00
parent 3d6c526864
commit c38f8fc543
14 changed files with 816 additions and 841 deletions
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11
hotspot/src/share/vm/gc_implementation/g1/g1GCPhaseTimes.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2013, 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
@ -133,13 +133,6 @@ class G1GCPhaseTimes : public CHeapObj<mtGC> {
double _cur_ref_proc_time_ms;
double _cur_ref_enq_time_ms;
// Card Table Count Cache stats
double _min_clear_cc_time_ms; // min
double _max_clear_cc_time_ms; // max
double _cur_clear_cc_time_ms; // clearing time during current pause
double _cum_clear_cc_time_ms; // cummulative clearing time
jlong _num_cc_clears; // number of times the card count cache has been cleared
double _cur_collection_start_sec;
double _root_region_scan_wait_time_ms;
@ -227,8 +220,6 @@ class G1GCPhaseTimes : public CHeapObj<mtGC> {
_root_region_scan_wait_time_ms = time_ms;
}
void record_cc_clear_time_ms(double ms);
void record_young_free_cset_time_ms(double time_ms) {
_recorded_young_free_cset_time_ms = time_ms;
}