Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/shared/gcPolicyCounters.cpp @ 3766:c3f1170908be
7045330: G1: Simplify/fix the HeapRegionSeq class
7042285: G1: native memory leak during humongous object allocation
6804436: G1: heap region indices should be size_t
Summary: A series of fixes and improvements to the HeapRegionSeq class: a) replace the _regions growable array with a standard C array, b) avoid de-allocating / re-allocating HeapRegion instances when the heap shrinks / grows (fix for 7042285), c) introduce fast method to map address to HeapRegion via a "biased" array pointer, d) embed the _hrs object in G1CollectedHeap, instead of pointing to it via an indirection, e) assume that all the regions added to the HeapRegionSeq instance are contiguous, f) replace int's with size_t's for indexes (and expand that to HeapRegion as part of 6804436), g) remove unnecessary / unused methods, h) rename a couple of fields (_alloc_search_start and _seq_bottom), i) fix iterate_from() not to always start from index 0 irrespective of the region passed to it, j) add a verification method to check the HeapRegionSeq assumptions, k) always call the wrappers for _hrs.iterate(), _hrs_length(), and _hrs.at() from G1CollectedHeap, not those methods directly, and l) unify the code that expands the sequence (by either re-using or creating a new HeapRegion) and make it robust wrt to a HeapRegion allocation failing.
Reviewed-by: stefank, johnc, brutisso
author | tonyp |
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date | Fri, 10 Jun 2011 13:16:40 -0400 |
parents | f95d63e2154a |
children |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "gc_implementation/shared/gcPolicyCounters.hpp" | |
27 #include "memory/resourceArea.hpp" | |
0 | 28 |
29 GCPolicyCounters::GCPolicyCounters(const char* name, int collectors, | |
30 int generations) { | |
31 | |
32 if (UsePerfData) { | |
33 EXCEPTION_MARK; | |
34 ResourceMark rm; | |
35 | |
36 _name_space = "policy"; | |
37 | |
38 char* cname = PerfDataManager::counter_name(_name_space, "name"); | |
39 PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK); | |
40 | |
41 cname = PerfDataManager::counter_name(_name_space, "collectors"); | |
42 PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_None, | |
43 collectors, CHECK); | |
44 | |
45 cname = PerfDataManager::counter_name(_name_space, "generations"); | |
46 PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_None, | |
47 generations, CHECK); | |
48 | |
49 cname = PerfDataManager::counter_name(_name_space, "maxTenuringThreshold"); | |
50 PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_None, | |
51 MaxTenuringThreshold, CHECK); | |
52 | |
53 cname = PerfDataManager::counter_name(_name_space, "tenuringThreshold"); | |
54 _tenuring_threshold = | |
55 PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_None, | |
56 MaxTenuringThreshold, CHECK); | |
57 | |
58 cname = PerfDataManager::counter_name(_name_space, "desiredSurvivorSize"); | |
59 _desired_survivor_size = | |
60 PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes, | |
61 CHECK); | |
62 } | |
63 } |