1/*
2 * Copyright (c) 2003, 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#ifndef SHARE_SERVICES_MANAGEMENT_HPP
26#define SHARE_SERVICES_MANAGEMENT_HPP
27
28#include "jmm.h"
29#include "memory/allocation.hpp"
30#include "runtime/handles.hpp"
31#include "runtime/timer.hpp"
32
33class OopClosure;
34class ThreadSnapshot;
35
36class Management : public AllStatic {
37private:
38 static PerfVariable* _begin_vm_creation_time;
39 static PerfVariable* _end_vm_creation_time;
40 static PerfVariable* _vm_init_done_time;
41 static jmmOptionalSupport _optional_support;
42 static TimeStamp _stamp; // Timestamp since vm init done time
43
44 // Management klasses
45 static InstanceKlass* _diagnosticCommandImpl_klass;
46 static InstanceKlass* _garbageCollectorExtImpl_klass;
47 static InstanceKlass* _garbageCollectorMXBean_klass;
48 static InstanceKlass* _gcInfo_klass;
49 static InstanceKlass* _managementFactoryHelper_klass;
50 static InstanceKlass* _memoryManagerMXBean_klass;
51 static InstanceKlass* _memoryPoolMXBean_klass;
52 static InstanceKlass* _memoryUsage_klass;
53 static InstanceKlass* _sensor_klass;
54 static InstanceKlass* _threadInfo_klass;
55 static InstanceKlass* load_and_initialize_klass(Symbol* sh, TRAPS);
56 static InstanceKlass* load_and_initialize_klass_or_null(Symbol* sh, TRAPS);
57 static InstanceKlass* initialize_klass(Klass* k, TRAPS);
58
59public:
60 static void init();
61 static void initialize(TRAPS);
62
63 static jlong ticks_to_ms(jlong ticks) NOT_MANAGEMENT_RETURN_(0L);
64 static jlong timestamp() NOT_MANAGEMENT_RETURN_(0L);
65
66 static void oops_do(OopClosure* f) NOT_MANAGEMENT_RETURN;
67 static void* get_jmm_interface(int version);
68 static void get_optional_support(jmmOptionalSupport* support);
69
70 static void get_loaded_classes(JavaThread* cur_thread, GrowableArray<Klass*>* klass_array);
71
72 static void record_vm_startup_time(jlong begin, jlong duration)
73 NOT_MANAGEMENT_RETURN;
74 static void record_vm_init_completed() {
75 // Initialize the timestamp to get the current time
76 _vm_init_done_time->set_value(os::javaTimeMillis());
77
78 // Update the timestamp to the vm init done time
79 _stamp.update();
80 }
81
82 static jlong begin_vm_creation_time() {
83 return _begin_vm_creation_time->get_value();
84 }
85 static jlong vm_init_done_time() {
86 return _vm_init_done_time->get_value();
87 }
88
89 // methods to return a Klass*.
90 static InstanceKlass* java_lang_management_ThreadInfo_klass(TRAPS);
91 static InstanceKlass* java_lang_management_MemoryUsage_klass(TRAPS)
92 NOT_MANAGEMENT_RETURN_(NULL);
93 static InstanceKlass* java_lang_management_MemoryPoolMXBean_klass(TRAPS);
94 static InstanceKlass* java_lang_management_MemoryManagerMXBean_klass(TRAPS);
95 static InstanceKlass* java_lang_management_GarbageCollectorMXBean_klass(TRAPS);
96 static InstanceKlass* sun_management_ManagementFactoryHelper_klass(TRAPS)
97 NOT_MANAGEMENT_RETURN_(NULL);
98 static InstanceKlass* sun_management_Sensor_klass(TRAPS)
99 NOT_MANAGEMENT_RETURN_(NULL);
100 static InstanceKlass* com_sun_management_internal_GarbageCollectorExtImpl_klass(TRAPS)
101 NOT_MANAGEMENT_RETURN_(NULL);
102 static InstanceKlass* com_sun_management_GcInfo_klass(TRAPS)
103 NOT_MANAGEMENT_RETURN_(NULL);
104 static InstanceKlass* com_sun_management_internal_DiagnosticCommandImpl_klass(TRAPS)
105 NOT_MANAGEMENT_RETURN_(NULL);
106
107 static instanceOop create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS);
108 static instanceOop create_thread_info_instance(ThreadSnapshot* snapshot, objArrayHandle monitors_array, typeArrayHandle depths_array, objArrayHandle synchronizers_array, TRAPS);
109};
110
111class TraceVmCreationTime : public StackObj {
112private:
113 TimeStamp _timer;
114 jlong _begin_time;
115
116public:
117 TraceVmCreationTime() {}
118 ~TraceVmCreationTime() {}
119
120 void start()
121 { _timer.update_to(0); _begin_time = os::javaTimeMillis(); }
122
123 jlong begin_time() const {
124 return _begin_time;
125 }
126
127 /**
128 * Only call this if initialization completes successfully; it will
129 * crash if PerfMemory_exit() has already been called (usually by
130 * os::shutdown() when there was an initialization failure).
131 */
132 void end()
133 { Management::record_vm_startup_time(_begin_time, _timer.milliseconds()); }
134
135};
136
137#endif // SHARE_SERVICES_MANAGEMENT_HPP
138