author | tschatzl |
Wed, 08 Aug 2018 15:31:07 +0200 | |
changeset 51334 | cc2c79d22508 |
parent 47216 | 71c04702a3d5 |
child 51809 | 61f62fb4d4bf |
permissions | -rw-r--r-- |
25051 | 1 |
/* |
2 |
* Copyright (c) 2014, 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 |
#ifndef SHARE_VM_CLASSFILE_CLASSLOADERSTATS_HPP |
|
26 |
#define SHARE_VM_CLASSFILE_CLASSLOADERSTATS_HPP |
|
27 |
||
28 |
||
29 |
#include "classfile/classLoaderData.hpp" |
|
30 |
#include "oops/klass.hpp" |
|
31 |
#include "oops/oopsHierarchy.hpp" |
|
32 |
#include "runtime/vm_operations.hpp" |
|
33 |
#include "services/diagnosticCommand.hpp" |
|
34 |
#include "utilities/resourceHash.hpp" |
|
35 |
||
36 |
||
37 |
class ClassLoaderStatsDCmd : public DCmd { |
|
38 |
public: |
|
39 |
ClassLoaderStatsDCmd(outputStream* output, bool heap) : |
|
40 |
DCmd(output, heap) { |
|
41 |
} |
|
42 |
||
43 |
static const char* name() { |
|
44 |
return "VM.classloader_stats"; |
|
45 |
} |
|
46 |
||
47 |
static const char* description() { |
|
48 |
return "Print statistics about all ClassLoaders."; |
|
49 |
} |
|
50 |
||
51 |
static const char* impact() { |
|
52 |
return "Low"; |
|
53 |
} |
|
54 |
||
55 |
virtual void execute(DCmdSource source, TRAPS); |
|
56 |
||
57 |
static int num_arguments() { |
|
58 |
return 0; |
|
59 |
} |
|
60 |
||
61 |
static const JavaPermission permission() { |
|
62 |
JavaPermission p = {"java.lang.management.ManagementPermission", |
|
63 |
"monitor", NULL}; |
|
64 |
return p; |
|
65 |
} |
|
66 |
}; |
|
67 |
||
68 |
||
69 |
class ClassLoaderStats : public ResourceObj { |
|
70 |
public: |
|
71 |
ClassLoaderData* _cld; |
|
72 |
oop _class_loader; |
|
73 |
oop _parent; |
|
74 |
||
75 |
size_t _chunk_sz; |
|
76 |
size_t _block_sz; |
|
77 |
uintx _classes_count; |
|
78 |
||
79 |
size_t _anon_chunk_sz; |
|
80 |
size_t _anon_block_sz; |
|
81 |
uintx _anon_classes_count; |
|
82 |
||
83 |
ClassLoaderStats() : |
|
84 |
_cld(0), |
|
85 |
_class_loader(0), |
|
86 |
_parent(0), |
|
87 |
_chunk_sz(0), |
|
88 |
_block_sz(0), |
|
89 |
_classes_count(0), |
|
51334
cc2c79d22508
8208671: Runtime, JFR, Serviceability changes to allow enabling -Wreorder
tschatzl
parents:
47216
diff
changeset
|
90 |
_anon_chunk_sz(0), |
25051 | 91 |
_anon_block_sz(0), |
92 |
_anon_classes_count(0) { |
|
93 |
} |
|
94 |
}; |
|
95 |
||
96 |
||
97 |
class ClassLoaderStatsClosure : public CLDClosure { |
|
98 |
protected: |
|
99 |
static bool oop_equals(oop const& s1, oop const& s2) { |
|
100 |
return s1 == s2; |
|
101 |
} |
|
102 |
||
103 |
static unsigned oop_hash(oop const& s1) { |
|
104 |
unsigned hash = (unsigned)((uintptr_t)&s1); |
|
105 |
return hash ^ (hash >> LogMinObjAlignment); |
|
106 |
} |
|
107 |
||
108 |
typedef ResourceHashtable<oop, ClassLoaderStats*, |
|
109 |
ClassLoaderStatsClosure::oop_hash, ClassLoaderStatsClosure::oop_equals> StatsTable; |
|
110 |
||
111 |
outputStream* _out; |
|
112 |
StatsTable* _stats; |
|
113 |
uintx _total_loaders; |
|
114 |
uintx _total_classes; |
|
115 |
size_t _total_chunk_sz; |
|
116 |
size_t _total_block_sz; |
|
117 |
||
118 |
public: |
|
119 |
ClassLoaderStatsClosure(outputStream* out) : |
|
120 |
_out(out), |
|
51334
cc2c79d22508
8208671: Runtime, JFR, Serviceability changes to allow enabling -Wreorder
tschatzl
parents:
47216
diff
changeset
|
121 |
_stats(new StatsTable()), |
25051 | 122 |
_total_loaders(0), |
51334
cc2c79d22508
8208671: Runtime, JFR, Serviceability changes to allow enabling -Wreorder
tschatzl
parents:
47216
diff
changeset
|
123 |
_total_classes(0), |
25051 | 124 |
_total_chunk_sz(0), |
51334
cc2c79d22508
8208671: Runtime, JFR, Serviceability changes to allow enabling -Wreorder
tschatzl
parents:
47216
diff
changeset
|
125 |
_total_block_sz(0) { |
25051 | 126 |
} |
127 |
||
128 |
virtual void do_cld(ClassLoaderData* cld); |
|
129 |
virtual bool do_entry(oop const& key, ClassLoaderStats* const& cls); |
|
130 |
void print(); |
|
131 |
||
132 |
private: |
|
133 |
void addEmptyParents(oop cl); |
|
134 |
}; |
|
135 |
||
136 |
||
137 |
class ClassLoaderStatsVMOperation : public VM_Operation { |
|
138 |
outputStream* _out; |
|
139 |
||
140 |
public: |
|
141 |
ClassLoaderStatsVMOperation(outputStream* out) : |
|
142 |
_out(out) { |
|
143 |
} |
|
144 |
||
145 |
VMOp_Type type() const { |
|
146 |
return VMOp_ClassLoaderStatsOperation; |
|
147 |
} |
|
148 |
||
149 |
void doit(); |
|
150 |
}; |
|
151 |
||
152 |
#endif // SHARE_VM_CLASSFILE_CLASSLOADERSTATS_HPP |