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 #include "precompiled.hpp" 26 #include "classfile/classLoader.hpp" 27 #include "logging/log.hpp" 28 #include "runtime/vm_version.hpp" 29 #include "services/attachListener.hpp" 30 #include "services/management.hpp" 31 #include "services/runtimeService.hpp" 32 #include "utilities/dtrace.hpp" 33 #include "utilities/exceptions.hpp" 34 #include "utilities/macros.hpp" 35 36 #if INCLUDE_MANAGEMENT 37 TimeStamp RuntimeService::_app_timer; 38 TimeStamp RuntimeService::_safepoint_timer; 39 PerfCounter* RuntimeService::_sync_time_ticks = NULL; 40 PerfCounter* RuntimeService::_total_safepoints = NULL; 41 PerfCounter* RuntimeService::_safepoint_time_ticks = NULL; 42 PerfCounter* RuntimeService::_application_time_ticks = NULL; 43 double RuntimeService::_last_safepoint_sync_time_sec = 0.0; 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 // The capabilities counter is a binary representation of the VM capabilities in string. 74 // This string respresentation simplifies the implementation of the client side 75 // to parse the value. 76 char capabilities[65]; 77 size_t len = sizeof(capabilities); 78 memset((void*) capabilities, '0', len); 79 capabilities[len-1] = '\0'; 80 capabilities[0] = AttachListener::is_attach_supported() ? '1' : '0'; 81 #if INCLUDE_SERVICES 82 capabilities[1] = '1'; 83 #endif // INCLUDE_SERVICES 84 PerfDataManager::create_string_constant(SUN_RT, "jvmCapabilities", 85 capabilities, CHECK); 86 } 87 } 88 89 void RuntimeService::record_safepoint_begin() { 90 HS_PRIVATE_SAFEPOINT_BEGIN(); 91 92 // Print the time interval in which the app was executing 93 if (_app_timer.is_updated()) { 94 log_info(safepoint)("Application time: %3.7f seconds", last_application_time_sec()); 95 } 96 97 // update the time stamp to begin recording safepoint time 98 _safepoint_timer.update(); 99 _last_safepoint_sync_time_sec = 0.0; 100 if (UsePerfData) { 101 _total_safepoints->inc(); 102 if (_app_timer.is_updated()) { 103 _application_time_ticks->inc(_app_timer.ticks_since_update()); 104 } 105 } 106 } 107 108 void RuntimeService::record_safepoint_synchronized() { 109 if (UsePerfData) { 110 _sync_time_ticks->inc(_safepoint_timer.ticks_since_update()); 111 } 112 if (log_is_enabled(Info, safepoint)) { 113 _last_safepoint_sync_time_sec = last_safepoint_time_sec(); 114 } 115 } 116 117 void RuntimeService::record_safepoint_end() { 118 HS_PRIVATE_SAFEPOINT_END(); 119 120 // Print the time interval for which the app was stopped 121 // during the current safepoint operation. 122 log_info(safepoint)("Total time for which application threads were stopped: %3.7f seconds, Stopping threads took: %3.7f seconds", 123 last_safepoint_time_sec(), 124 _last_safepoint_sync_time_sec); 125 126 // update the time stamp to begin recording app time 127 _app_timer.update(); 128 if (UsePerfData) { 129 _safepoint_time_ticks->inc(_safepoint_timer.ticks_since_update()); 130 } 131 } 132 133 void RuntimeService::record_application_start() { 134 // update the time stamp to begin recording app time 135 _app_timer.update(); 136 } 137 138 // Don't need to record application end because we currently 139 // exit at a safepoint and record_safepoint_begin() handles updating 140 // the application time counter at VM exit. 141 142 jlong RuntimeService::safepoint_sync_time_ms() { 143 return UsePerfData ? 144 Management::ticks_to_ms(_sync_time_ticks->get_value()) : -1; 145 } 146 147 jlong RuntimeService::safepoint_count() { 148 return UsePerfData ? 149 _total_safepoints->get_value() : -1; 150 } 151 jlong RuntimeService::safepoint_time_ms() { 152 return UsePerfData ? 153 Management::ticks_to_ms(_safepoint_time_ticks->get_value()) : -1; 154 } 155 156 jlong RuntimeService::application_time_ms() { 157 return UsePerfData ? 158 Management::ticks_to_ms(_application_time_ticks->get_value()) : -1; 159 } 160 161 #endif // INCLUDE_MANAGEMENT