1 /*
2 * Copyright (c) 2003, 2015, 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_SERVICES_MANAGEMENT_HPP
26 #define SHARE_VM_SERVICES_MANAGEMENT_HPP
27
28 #include "memory/allocation.hpp"
29 #include "runtime/handles.hpp"
30 #include "runtime/timer.hpp"
31 #include "services/jmm.h"
32
33 class OopClosure;
34 class ThreadSnapshot;
35
36 class Management : public AllStatic {
37 private:
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 Klass* _diagnosticCommandImpl_klass;
46 static Klass* _garbageCollectorExtImpl_klass;
47 static Klass* _garbageCollectorMXBean_klass;
48 static Klass* _gcInfo_klass;
49 static Klass* _managementFactoryHelper_klass;
50 static Klass* _memoryManagerMXBean_klass;
51 static Klass* _memoryPoolMXBean_klass;
52 static Klass* _memoryUsage_klass;
53 static Klass* _sensor_klass;
54 static Klass* _threadInfo_klass;
55 static Klass* load_and_initialize_klass(Symbol* sh, TRAPS);
56
57 public:
58 static void init();
59 static void initialize(TRAPS);
60
61 static jlong ticks_to_ms(jlong ticks) NOT_MANAGEMENT_RETURN_(0L);
62 static jlong timestamp() NOT_MANAGEMENT_RETURN_(0L);
63
64 static void oops_do(OopClosure* f) NOT_MANAGEMENT_RETURN;
65 static void* get_jmm_interface(int version);
66 static void get_optional_support(jmmOptionalSupport* support);
67
68 static void get_loaded_classes(JavaThread* cur_thread, GrowableArray<KlassHandle>* klass_handle_array);
69
70 static void record_vm_startup_time(jlong begin, jlong duration)
71 NOT_MANAGEMENT_RETURN;
72 static void record_vm_init_completed() {
73 // Initialize the timestamp to get the current time
74 _vm_init_done_time->set_value(os::javaTimeMillis());
75
76 // Update the timestamp to the vm init done time
77 _stamp.update();
78 }
79
80 static jlong begin_vm_creation_time() {
81 return _begin_vm_creation_time->get_value();
82 }
83 static jlong vm_init_done_time() {
84 return _vm_init_done_time->get_value();
85 }
86
87 // methods to return a Klass*.
88 static Klass* java_lang_management_ThreadInfo_klass(TRAPS);
89 static Klass* java_lang_management_MemoryUsage_klass(TRAPS)
90 NOT_MANAGEMENT_RETURN_(NULL);
91 static Klass* java_lang_management_MemoryPoolMXBean_klass(TRAPS);
92 static Klass* java_lang_management_MemoryManagerMXBean_klass(TRAPS);
93 static Klass* java_lang_management_GarbageCollectorMXBean_klass(TRAPS);
94 static Klass* sun_management_ManagementFactoryHelper_klass(TRAPS)
95 NOT_MANAGEMENT_RETURN_(NULL);
96 static Klass* sun_management_Sensor_klass(TRAPS)
97 NOT_MANAGEMENT_RETURN_(NULL);
98 static Klass* com_sun_management_internal_GarbageCollectorExtImpl_klass(TRAPS)
99 NOT_MANAGEMENT_RETURN_(NULL);
100 static Klass* com_sun_management_GcInfo_klass(TRAPS)
101 NOT_MANAGEMENT_RETURN_(NULL);
102 static Klass* com_sun_management_internal_DiagnosticCommandImpl_klass(TRAPS)
103 NOT_MANAGEMENT_RETURN_(NULL);
104
105 static instanceOop create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS);
106 static instanceOop create_thread_info_instance(ThreadSnapshot* snapshot, objArrayHandle monitors_array, typeArrayHandle depths_array, objArrayHandle synchronizers_array, TRAPS);
107 };
108
109 class TraceVmCreationTime : public StackObj {
110 private:
111 TimeStamp _timer;
112 jlong _begin_time;
113
114 public:
115 TraceVmCreationTime() {}
116 ~TraceVmCreationTime() {}
117
118 void start()
119 { _timer.update_to(0); _begin_time = os::javaTimeMillis(); }
120
121 jlong begin_time() const {
122 return _begin_time;
123 }
124
125 /**
126 * Only call this if initialization completes successfully; it will
127 * crash if PerfMemory_exit() has already been called (usually by
128 * os::shutdown() when there was an initialization failure).
129 */
130 void end()
131 { Management::record_vm_startup_time(_begin_time, _timer.milliseconds()); }
132
133 };
134
135 #endif // SHARE_VM_SERVICES_MANAGEMENT_HPP