1 /*
 2  * Copyright (c) 2002, 2019, 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/serial/cSpaceCounters.hpp"
27 #include "memory/allocation.inline.hpp"
28 #include "memory/metaspace.hpp"
29 #include "memory/resourceArea.hpp"
30 
31 CSpaceCounters::CSpaceCounters(const char* name, int ordinal, size_t max_size,
32                                ContiguousSpace* s, GenerationCounters* gc) :
33    _space(s) {
34 
35   if (UsePerfData) {
36     EXCEPTION_MARK;
37     ResourceMark rm;
38 
39     const char* cns = PerfDataManager::name_space(gc->name_space(), "space",
40                                                   ordinal);
41 
42     _name_space = NEW_C_HEAP_ARRAY(char, strlen(cns)+1, mtGC);
43     strcpy(_name_space, cns);
44 
45     const char* cname = PerfDataManager::counter_name(_name_space, "name");
46     PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK);
47 
48     cname = PerfDataManager::counter_name(_name_space, "maxCapacity");
49     _max_capacity = PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
50                                      (jlong)max_size, CHECK);
51 
52     cname = PerfDataManager::counter_name(_name_space, "capacity");
53     _capacity = PerfDataManager::create_variable(SUN_GC, cname,
54                                                  PerfData::U_Bytes,
55                                                  _space->capacity(), CHECK);
56 
57     cname = PerfDataManager::counter_name(_name_space, "used");
58     _used = PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
59                                     new ContiguousSpaceUsedHelper(_space),
60                                     CHECK);
61 
62     cname = PerfDataManager::counter_name(_name_space, "initCapacity");
63     PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes,
64                                      _space->capacity(), CHECK);
65   }
66 }
67 
68 CSpaceCounters::~CSpaceCounters() {
69   FREE_C_HEAP_ARRAY(char, _name_space);
70 }
71 
72 void CSpaceCounters::update_capacity() {
73   _capacity->set_value(_space->capacity());
74 }
75 
76 void CSpaceCounters::update_used() {
77   _used->set_value(_space->used());
78 }
79 
80 void CSpaceCounters::update_all() {
81   update_used();
82   update_capacity();
83 }
84 
85 jlong ContiguousSpaceUsedHelper::take_sample(){
86   return _space->used();
87 }
--- EOF ---