1 /* 2 * Copyright (c) 2003, 2010, 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 "incls/_precompiled.incl" 26 # include "incls/_runtimeService.cpp.incl" 27 28 HS_DTRACE_PROBE_DECL(hs_private, safepoint__begin); 29 HS_DTRACE_PROBE_DECL(hs_private, safepoint__end); 30 31 TimeStamp RuntimeService::_app_timer; 32 TimeStamp RuntimeService::_safepoint_timer; 33 PerfCounter* RuntimeService::_sync_time_ticks = NULL; 34 PerfCounter* RuntimeService::_total_safepoints = NULL; 35 PerfCounter* RuntimeService::_safepoint_time_ticks = NULL; 36 PerfCounter* RuntimeService::_application_time_ticks = NULL; 37 PerfCounter* RuntimeService::_thread_interrupt_signaled_count = NULL; 38 PerfCounter* RuntimeService::_interrupted_before_count = NULL; 39 PerfCounter* RuntimeService::_interrupted_during_count = NULL; 40 41 void RuntimeService::init() { 42 // Make sure the VM version is initialized 43 Abstract_VM_Version::initialize(); 44 45 if (UsePerfData) { 46 EXCEPTION_MARK; 47 48 _sync_time_ticks = 49 PerfDataManager::create_counter(SUN_RT, "safepointSyncTime", 50 PerfData::U_Ticks, CHECK); 51 52 _total_safepoints = 53 PerfDataManager::create_counter(SUN_RT, "safepoints", 54 PerfData::U_Events, CHECK); 55 56 _safepoint_time_ticks = 57 PerfDataManager::create_counter(SUN_RT, "safepointTime", 58 PerfData::U_Ticks, CHECK); 59 60 _application_time_ticks = 61 PerfDataManager::create_counter(SUN_RT, "applicationTime", 62 PerfData::U_Ticks, CHECK); 63 64 65 // create performance counters for jvm_version and its capabilities 66 PerfDataManager::create_constant(SUN_RT, "jvmVersion", PerfData::U_None, 67 (jlong) Abstract_VM_Version::jvm_version(), CHECK); 68 69 // I/O interruption related counters 70 71 // thread signaling via os::interrupt() 72 73 _thread_interrupt_signaled_count = 74 PerfDataManager::create_counter(SUN_RT, 75 "threadInterruptSignaled", PerfData::U_Events, CHECK); 76 77 // OS_INTRPT via "check before" in _INTERRUPTIBLE 78 79 _interrupted_before_count = 80 PerfDataManager::create_counter(SUN_RT, "interruptedBeforeIO", 81 PerfData::U_Events, CHECK); 82 83 // OS_INTRPT via "check during" in _INTERRUPTIBLE 84 85 _interrupted_during_count = 86 PerfDataManager::create_counter(SUN_RT, "interruptedDuringIO", 87 PerfData::U_Events, CHECK); 88 89 // The capabilities counter is a binary representation of the VM capabilities in string. 90 // This string respresentation simplifies the implementation of the client side 91 // to parse the value. 92 char capabilities[65]; 93 size_t len = sizeof(capabilities); 94 memset((void*) capabilities, '0', len); 95 capabilities[len-1] = '\0'; 96 capabilities[0] = AttachListener::is_attach_supported() ? '1' : '0'; 97 #ifdef KERNEL 98 capabilities[1] = '1'; 99 #endif // KERNEL 100 PerfDataManager::create_string_constant(SUN_RT, "jvmCapabilities", 101 capabilities, CHECK); 102 } 103 } 104 105 void RuntimeService::record_safepoint_begin() { 106 HS_DTRACE_PROBE(hs_private, safepoint__begin); 107 108 // Print the time interval in which the app was executing 109 if (PrintGCApplicationConcurrentTime) { 110 gclog_or_tty->print_cr("Application time: %3.7f seconds", 111 last_application_time_sec()); 112 } 113 114 // update the time stamp to begin recording safepoint time 115 _safepoint_timer.update(); 116 if (UsePerfData) { 117 _total_safepoints->inc(); 118 if (_app_timer.is_updated()) { 119 _application_time_ticks->inc(_app_timer.ticks_since_update()); 120 } 121 } 122 } 123 124 void RuntimeService::record_safepoint_synchronized() { 125 if (UsePerfData) { 126 _sync_time_ticks->inc(_safepoint_timer.ticks_since_update()); 127 } 128 } 129 130 void RuntimeService::record_safepoint_end() { 131 HS_DTRACE_PROBE(hs_private, safepoint__end); 132 133 // Print the time interval for which the app was stopped 134 // during the current safepoint operation. 135 if (PrintGCApplicationStoppedTime) { 136 gclog_or_tty->print_cr("Total time for which application threads " 137 "were stopped: %3.7f seconds", 138 last_safepoint_time_sec()); 139 } 140 141 // update the time stamp to begin recording app time 142 _app_timer.update(); 143 if (UsePerfData) { 144 _safepoint_time_ticks->inc(_safepoint_timer.ticks_since_update()); 145 } 146 } 147 148 void RuntimeService::record_application_start() { 149 // update the time stamp to begin recording app time 150 _app_timer.update(); 151 } 152 153 // Don't need to record application end because we currently 154 // exit at a safepoint and record_safepoint_begin() handles updating 155 // the application time counter at VM exit. 156 157 jlong RuntimeService::safepoint_sync_time_ms() { 158 return UsePerfData ? 159 Management::ticks_to_ms(_sync_time_ticks->get_value()) : -1; 160 } 161 162 jlong RuntimeService::safepoint_count() { 163 return UsePerfData ? 164 _total_safepoints->get_value() : -1; 165 } 166 jlong RuntimeService::safepoint_time_ms() { 167 return UsePerfData ? 168 Management::ticks_to_ms(_safepoint_time_ticks->get_value()) : -1; 169 } 170 171 jlong RuntimeService::application_time_ms() { 172 return UsePerfData ? 173 Management::ticks_to_ms(_application_time_ticks->get_value()) : -1; 174 } 175 176 void RuntimeService::record_interrupted_before_count() { 177 if (UsePerfData) { 178 _interrupted_before_count->inc(); 179 } 180 } 181 182 void RuntimeService::record_interrupted_during_count() { 183 if (UsePerfData) { 184 _interrupted_during_count->inc(); 185 } 186 } 187 188 void RuntimeService::record_thread_interrupt_signaled_count() { 189 if (UsePerfData) { 190 _thread_interrupt_signaled_count->inc(); 191 } 192 }