Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/statSampler.hpp @ 1782:f353275af40e
6981773: incorrect fill value with OptimizeFill
Reviewed-by: kvn, twisti
author | never |
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date | Thu, 02 Sep 2010 11:40:02 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
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0 | 1 /* |
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2 * Copyright (c) 2001, 2002, 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 | |
25 class StatSamplerTask; | |
26 | |
27 /* | |
28 * The StatSampler class is responsible for periodically updating | |
29 * sampled PerfData instances and writing the sampled values to the | |
30 * PerfData memory region. | |
31 * | |
32 * In addition it is also responsible for providing a home for | |
33 * PerfData instances that otherwise have no better home. | |
34 */ | |
35 class StatSampler : AllStatic { | |
36 | |
37 friend class StatSamplerTask; | |
38 | |
39 private: | |
40 | |
41 static StatSamplerTask* _task; | |
42 static PerfDataList* _sampled; | |
43 | |
44 static void collect_sample(); | |
45 static void create_misc_perfdata(); | |
46 static void create_sampled_perfdata(); | |
47 static void sample_data(PerfDataList* list); | |
48 static const char* get_system_property(const char* name, TRAPS); | |
49 static void create_system_property_instrumentation(TRAPS); | |
50 | |
51 public: | |
52 // Start/stop the sampler | |
53 static void engage(); | |
54 static void disengage(); | |
55 | |
56 static bool is_active() { return _task != NULL; } | |
57 | |
58 static void initialize(); | |
59 static void destroy(); | |
60 }; | |
61 | |
62 void statSampler_exit(); |