Mercurial > hg > truffle
comparison src/share/vm/services/nmtDCmd.cpp @ 6197:d2a62e0f25eb
6995781: Native Memory Tracking (Phase 1)
7151532: DCmd for hotspot native memory tracking
Summary: Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd
Reviewed-by: acorn, coleenp, fparain
author | zgu |
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date | Thu, 28 Jun 2012 17:03:16 -0400 |
parents | |
children | 3f84e17b6bca |
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6174:74533f63b116 | 6197:d2a62e0f25eb |
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1 /* | |
2 * Copyright (c) 2012, 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 #include "precompiled.hpp" | |
25 #include "services/nmtDCmd.hpp" | |
26 #include "services/memReporter.hpp" | |
27 #include "services/memTracker.hpp" | |
28 #include "utilities/globalDefinitions.hpp" | |
29 | |
30 NMTDCmd::NMTDCmd(outputStream* output, | |
31 bool heap): DCmdWithParser(output, heap), | |
32 _summary("summary", "request runtime to report current memory summary, " \ | |
33 "which includes total reserved and committed memory, along " \ | |
34 "with memory usage summary by each subsytem.", | |
35 "BOOLEAN", false, "false"), | |
36 _detail("detail", "request runtime to report memory allocation >= " | |
37 "1K by each callsite.", | |
38 "BOOLEAN", false, "false"), | |
39 _baseline("baseline", "request runtime to baseline current memory usage, " \ | |
40 "so it can be compared against in later time.", | |
41 "BOOLEAN", false, "false"), | |
42 _summary_diff("summary.diff", "request runtime to report memory summary " \ | |
43 "comparison against previous baseline.", | |
44 "BOOLEAN", false, "false"), | |
45 _detail_diff("detail.diff", "request runtime to report memory detail " \ | |
46 "comparison against previous baseline, which shows the memory " \ | |
47 "allocation activities at different callsites.", | |
48 "BOOLEAN", false, "false"), | |
49 _shutdown("shutdown", "request runtime to shutdown itself and free the " \ | |
50 "memory used by runtime.", | |
51 "BOOLEAN", false, "false"), | |
52 #ifndef PRODUCT | |
53 _debug("debug", "print tracker statistics. Debug only, not thread safe", \ | |
54 "BOOLEAN", false, "false"), | |
55 #endif | |
56 _scale("scale", "Memory usage in which scale, KB, MB or GB", | |
57 "STRING", false, "KB") { | |
58 _dcmdparser.add_dcmd_option(&_summary); | |
59 _dcmdparser.add_dcmd_option(&_detail); | |
60 _dcmdparser.add_dcmd_option(&_baseline); | |
61 _dcmdparser.add_dcmd_option(&_summary_diff); | |
62 _dcmdparser.add_dcmd_option(&_detail_diff); | |
63 _dcmdparser.add_dcmd_option(&_shutdown); | |
64 #ifndef PRODUCT | |
65 _dcmdparser.add_dcmd_option(&_debug); | |
66 #endif | |
67 _dcmdparser.add_dcmd_option(&_scale); | |
68 } | |
69 | |
70 void NMTDCmd::execute(TRAPS) { | |
71 const char* scale_value = _scale.value(); | |
72 size_t scale_unit; | |
73 if (strcmp(scale_value, "KB") == 0 || strcmp(scale_value, "kb") == 0) { | |
74 scale_unit = K; | |
75 } else if (strcmp(scale_value, "MB") == 0 || | |
76 strcmp(scale_value, "mb") == 0) { | |
77 scale_unit = M; | |
78 } else if (strcmp(scale_value, "GB") == 0 || | |
79 strcmp(scale_value, "gb") == 0) { | |
80 scale_unit = G; | |
81 } else { | |
82 output()->print_cr("Incorrect scale value: %s", scale_value); | |
83 return; | |
84 } | |
85 | |
86 int nopt = 0; | |
87 if(_summary.is_set()) { ++nopt; } | |
88 if(_detail.is_set()) { ++nopt; } | |
89 if(_baseline.is_set()) { ++nopt; } | |
90 if(_summary_diff.is_set()) { ++nopt; } | |
91 if(_detail_diff.is_set()) { ++nopt; } | |
92 if(_shutdown.is_set()) { ++nopt; } | |
93 #ifndef PRODUCT | |
94 if(_debug.is_set()) { ++nopt; } | |
95 #endif | |
96 | |
97 if(nopt > 1) { | |
98 output()->print_cr("At most one of the following option can be specified: " \ | |
99 "summary, detail, baseline, summary.diff, detail.diff, shutdown" | |
100 #ifndef PRODUCT | |
101 " ,debug" | |
102 #endif | |
103 ); | |
104 return; | |
105 } | |
106 | |
107 if(nopt == 0) { | |
108 _summary.set_value(true); | |
109 } | |
110 | |
111 #ifndef PRODUCT | |
112 if (_debug.value()) { | |
113 output()->print_cr("debug command is NOT thread-safe, may cause crash"); | |
114 MemTracker::print_tracker_stats(output()); | |
115 return; | |
116 } | |
117 #endif | |
118 | |
119 // native memory tracking has to be on | |
120 if (!MemTracker::is_on() || MemTracker::shutdown_in_progress()) { | |
121 // if it is not on, what's the reason? | |
122 output()->print_cr(MemTracker::reason()); | |
123 return; | |
124 } | |
125 | |
126 if (_summary.value()) { | |
127 BaselineTTYOutputer outputer(output()); | |
128 MemTracker::print_memory_usage(outputer, scale_unit, true); | |
129 } else if (_detail.value()) { | |
130 BaselineTTYOutputer outputer(output()); | |
131 MemTracker::print_memory_usage(outputer, scale_unit, false); | |
132 } else if (_baseline.value()) { | |
133 if (MemTracker::baseline()) { | |
134 output()->print_cr("Successfully baselined."); | |
135 } else { | |
136 output()->print_cr("Baseline failed."); | |
137 } | |
138 } else if (_summary_diff.value()) { | |
139 if (MemTracker::has_baseline()) { | |
140 BaselineTTYOutputer outputer(output()); | |
141 MemTracker::compare_memory_usage(outputer, scale_unit, true); | |
142 } else { | |
143 output()->print_cr("No baseline to compare, run 'baseline' command first"); | |
144 } | |
145 } else if (_detail_diff.value()) { | |
146 if (MemTracker::has_baseline()) { | |
147 BaselineTTYOutputer outputer(output()); | |
148 MemTracker::compare_memory_usage(outputer, scale_unit, false); | |
149 } else { | |
150 output()->print_cr("No baseline to compare to, run 'baseline' command first"); | |
151 } | |
152 } else if (_shutdown.value()) { | |
153 MemTracker::shutdown(MemTracker::NMT_shutdown_user); | |
154 output()->print_cr("Shutdown is in progress, it will take a few moments to " \ | |
155 "completely shutdown"); | |
156 } else { | |
157 ShouldNotReachHere(); | |
158 output()->print_cr("Unknown command"); | |
159 } | |
160 } | |
161 | |
162 int NMTDCmd::num_arguments() { | |
163 ResourceMark rm; | |
164 NMTDCmd* dcmd = new NMTDCmd(NULL, false); | |
165 if (dcmd != NULL) { | |
166 DCmdMark mark(dcmd); | |
167 return dcmd->_dcmdparser.num_arguments(); | |
168 } else { | |
169 return 0; | |
170 } | |
171 } | |
172 |