1 /*
2 * Copyright (c) 2003, 2013, 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 "classfile/classLoader.hpp"
27 #include "services/attachListener.hpp"
28 #include "services/management.hpp"
29 #include "services/runtimeService.hpp"
30 #include "utilities/dtrace.hpp"
31 #include "utilities/exceptions.hpp"
32 #include "utilities/macros.hpp"
33
34 #if INCLUDE_MANAGEMENT
35 TimeStamp RuntimeService::_app_timer;
36 TimeStamp RuntimeService::_safepoint_timer;
37 PerfCounter* RuntimeService::_sync_time_ticks = NULL;
38 PerfCounter* RuntimeService::_total_safepoints = NULL;
39 PerfCounter* RuntimeService::_safepoint_time_ticks = NULL;
40 PerfCounter* RuntimeService::_application_time_ticks = NULL;
41 PerfCounter* RuntimeService::_thread_interrupt_signaled_count = NULL;
42 PerfCounter* RuntimeService::_interrupted_before_count = NULL;
43 PerfCounter* RuntimeService::_interrupted_during_count = NULL;
44
45 void RuntimeService::init() {
46 // Make sure the VM version is initialized
47 Abstract_VM_Version::initialize();
48
49 if (UsePerfData) {
50 EXCEPTION_MARK;
51
52 _sync_time_ticks =
53 PerfDataManager::create_counter(SUN_RT, "safepointSyncTime",
54 PerfData::U_Ticks, CHECK);
55
56 _total_safepoints =
57 PerfDataManager::create_counter(SUN_RT, "safepoints",
58 PerfData::U_Events, CHECK);
59
60 _safepoint_time_ticks =
61 PerfDataManager::create_counter(SUN_RT, "safepointTime",
62 PerfData::U_Ticks, CHECK);
63
64 _application_time_ticks =
65 PerfDataManager::create_counter(SUN_RT, "applicationTime",
66 PerfData::U_Ticks, CHECK);
67
68
69 // create performance counters for jvm_version and its capabilities
70 PerfDataManager::create_constant(SUN_RT, "jvmVersion", PerfData::U_None,
71 (jlong) Abstract_VM_Version::jvm_version(), CHECK);
72
73 // I/O interruption related counters
74
75 // thread signaling via os::interrupt()
76
77 _thread_interrupt_signaled_count =
78 PerfDataManager::create_counter(SUN_RT,
79 "threadInterruptSignaled", PerfData::U_Events, CHECK);
80
81 // OS_INTRPT via "check before" in _INTERRUPTIBLE
82
83 _interrupted_before_count =
84 PerfDataManager::create_counter(SUN_RT, "interruptedBeforeIO",
85 PerfData::U_Events, CHECK);
86
87 // OS_INTRPT via "check during" in _INTERRUPTIBLE
88
89 _interrupted_during_count =
90 PerfDataManager::create_counter(SUN_RT, "interruptedDuringIO",
91 PerfData::U_Events, CHECK);
92
93 // The capabilities counter is a binary representation of the VM capabilities in string.
94 // This string respresentation simplifies the implementation of the client side
95 // to parse the value.
96 char capabilities[65];
97 size_t len = sizeof(capabilities);
98 memset((void*) capabilities, '0', len);
99 capabilities[len-1] = '\0';
100 capabilities[0] = AttachListener::is_attach_supported() ? '1' : '0';
101 #if INCLUDE_SERVICES
102 capabilities[1] = '1';
103 #endif // INCLUDE_SERVICES
104 PerfDataManager::create_string_constant(SUN_RT, "jvmCapabilities",
105 capabilities, CHECK);
106 }
107 }
108
109 void RuntimeService::record_safepoint_begin() {
110 HS_PRIVATE_SAFEPOINT_BEGIN();
111
112 // Print the time interval in which the app was executing
113 if (PrintGCApplicationConcurrentTime && _app_timer.is_updated()) {
114 gclog_or_tty->date_stamp(PrintGCDateStamps);
115 gclog_or_tty->stamp(PrintGCTimeStamps);
116 gclog_or_tty->print_cr("Application time: %3.7f seconds",
117 last_application_time_sec());
118 }
119
120 // update the time stamp to begin recording safepoint time
121 _safepoint_timer.update();
122 if (UsePerfData) {
123 _total_safepoints->inc();
124 if (_app_timer.is_updated()) {
125 _application_time_ticks->inc(_app_timer.ticks_since_update());
126 }
127 }
128 }
129
130 void RuntimeService::record_safepoint_synchronized() {
131 if (UsePerfData) {
132 _sync_time_ticks->inc(_safepoint_timer.ticks_since_update());
133 }
134 }
135
136 void RuntimeService::record_safepoint_end() {
137 HS_PRIVATE_SAFEPOINT_END();
138
139 // Print the time interval for which the app was stopped
140 // during the current safepoint operation.
141 if (PrintGCApplicationStoppedTime) {
142 gclog_or_tty->date_stamp(PrintGCDateStamps);
143 gclog_or_tty->stamp(PrintGCTimeStamps);
144 gclog_or_tty->print_cr("Total time for which application threads "
145 "were stopped: %3.7f seconds",
146 last_safepoint_time_sec());
147 }
148
149 // update the time stamp to begin recording app time
150 _app_timer.update();
151 if (UsePerfData) {
152 _safepoint_time_ticks->inc(_safepoint_timer.ticks_since_update());
153 }
154 }
155
156 void RuntimeService::record_application_start() {
157 // update the time stamp to begin recording app time
158 _app_timer.update();
159 }
160
161 // Don't need to record application end because we currently
162 // exit at a safepoint and record_safepoint_begin() handles updating
163 // the application time counter at VM exit.
164
165 jlong RuntimeService::safepoint_sync_time_ms() {
166 return UsePerfData ?
167 Management::ticks_to_ms(_sync_time_ticks->get_value()) : -1;
168 }
169
170 jlong RuntimeService::safepoint_count() {
171 return UsePerfData ?
172 _total_safepoints->get_value() : -1;
173 }
174 jlong RuntimeService::safepoint_time_ms() {
175 return UsePerfData ?
176 Management::ticks_to_ms(_safepoint_time_ticks->get_value()) : -1;
177 }
178
179 jlong RuntimeService::application_time_ms() {
180 return UsePerfData ?
181 Management::ticks_to_ms(_application_time_ticks->get_value()) : -1;
182 }
183
184 void RuntimeService::record_interrupted_before_count() {
185 if (UsePerfData) {
186 _interrupted_before_count->inc();
187 }
188 }
189
190 void RuntimeService::record_interrupted_during_count() {
191 if (UsePerfData) {
192 _interrupted_during_count->inc();
193 }
194 }
195
196 void RuntimeService::record_thread_interrupt_signaled_count() {
197 if (UsePerfData) {
198 _thread_interrupt_signaled_count->inc();
199 }
200 }
201
202 #endif // INCLUDE_MANAGEMENT