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