Mercurial > hg > truffle
comparison src/share/vm/gc_implementation/g1/g1ErgoVerbose.cpp @ 3914:20213c8a3c40
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
Summary: It introduces ergonomic decision logging in G1 for the following heuristics: heap sizing, collection set construction, concurrent cycle initiation, and partially-young GC start/end. The code has a bit of refactoring in a few places to make the decision logging possible. It also replaces alternative ad-hoc logging that we have under different parameters and switches (G1_DEBUG, G1PolicyVerbose).
Reviewed-by: johnc, ysr
author | tonyp |
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date | Wed, 07 Sep 2011 12:21:23 -0400 |
parents | |
children | 41406797186b |
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3913:27702f012017 | 3914:20213c8a3c40 |
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1 /* | |
2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. | |
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 * | |
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
20 * or visit www.oracle.com if you need additional information or have any | |
21 * questions. | |
22 * | |
23 */ | |
24 | |
25 #include "precompiled.hpp" | |
26 #include "gc_implementation/g1/g1ErgoVerbose.hpp" | |
27 #include "utilities/ostream.hpp" | |
28 | |
29 ErgoLevel G1ErgoVerbose::_level; | |
30 bool G1ErgoVerbose::_enabled[ErgoHeuristicNum]; | |
31 | |
32 void G1ErgoVerbose::initialize() { | |
33 set_level(ErgoLow); | |
34 set_enabled(false); | |
35 } | |
36 | |
37 void G1ErgoVerbose::set_level(ErgoLevel level) { | |
38 _level = level; | |
39 } | |
40 | |
41 void G1ErgoVerbose::set_enabled(ErgoHeuristic n, bool enabled) { | |
42 assert(0 <= n && n < ErgoHeuristicNum, "pre-condition"); | |
43 _enabled[n] = enabled; | |
44 } | |
45 | |
46 void G1ErgoVerbose::set_enabled(bool enabled) { | |
47 for (int n = 0; n < ErgoHeuristicNum; n += 1) { | |
48 set_enabled((ErgoHeuristic) n, enabled); | |
49 } | |
50 } | |
51 | |
52 const char* G1ErgoVerbose::to_string(int tag) { | |
53 ErgoHeuristic n = extract_heuristic(tag); | |
54 switch (n) { | |
55 case ErgoHeapSizing: return "Heap Sizing"; | |
56 case ErgoCSetConstruction: return "CSet Construction"; | |
57 case ErgoConcCycles: return "Concurrent Cycles"; | |
58 case ErgoPartiallyYoungGCs: return "Partially-Young GCs"; | |
59 default: | |
60 ShouldNotReachHere(); | |
61 // Keep the Windows compiler happy | |
62 return NULL; | |
63 } | |
64 } | |
65 |