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 37TimeStamp RuntimeService::_app_timer; 38TimeStamp RuntimeService::_safepoint_timer; 39PerfCounter* RuntimeService::_sync_time_ticks = NULL; 40PerfCounter* RuntimeService::_total_safepoints = NULL; 41PerfCounter* RuntimeService::_safepoint_time_ticks = NULL; 42PerfCounter* RuntimeService::_application_time_ticks = NULL; 43double RuntimeService::_last_safepoint_sync_time_sec = 0.0; 44 45void RuntimeService::init() { 46 47 if (UsePerfData) { 48 EXCEPTION_MARK; 49 50 _sync_time_ticks = 51 PerfDataManager::create_counter(SUN_RT, "safepointSyncTime", 52 PerfData::U_Ticks, CHECK); 53 54 _total_safepoints = 55 PerfDataManager::create_counter(SUN_RT, "safepoints", 56 PerfData::U_Events, CHECK); 57 58 _safepoint_time_ticks = 59 PerfDataManager::create_counter(SUN_RT, "safepointTime", 60 PerfData::U_Ticks, CHECK); 61 62 _application_time_ticks = 63 PerfDataManager::create_counter(SUN_RT, "applicationTime", 64 PerfData::U_Ticks, CHECK); 65 66 67 // create performance counters for jvm_version and its capabilities 68 PerfDataManager::create_constant(SUN_RT, "jvmVersion", PerfData::U_None, 69 (jlong) Abstract_VM_Version::jvm_version(), CHECK); 70 71 // The capabilities counter is a binary representation of the VM capabilities in string. 72 // This string respresentation simplifies the implementation of the client side 73 // to parse the value. 74 char capabilities[65]; 75 size_t len = sizeof(capabilities); 76 memset((void*) capabilities, '0', len); 77 capabilities[len-1] = '\0'; 78 capabilities[0] = AttachListener::is_attach_supported() ? '1' : '0'; 79#if INCLUDE_SERVICES 80 capabilities[1] = '1'; 81#endif // INCLUDE_SERVICES 82 PerfDataManager::create_string_constant(SUN_RT, "jvmCapabilities", 83 capabilities, CHECK); 84 } 85} 86 87void RuntimeService::record_safepoint_begin() { 88 HS_PRIVATE_SAFEPOINT_BEGIN(); 89 90 // Print the time interval in which the app was executing 91 if (_app_timer.is_updated()) { 92 log_info(safepoint)("Application time: %3.7f seconds", last_application_time_sec()); 93 } 94 95 // update the time stamp to begin recording safepoint time 96 _safepoint_timer.update(); 97 _last_safepoint_sync_time_sec = 0.0; 98 if (UsePerfData) { 99 _total_safepoints->inc(); 100 if (_app_timer.is_updated()) { 101 _application_time_ticks->inc(_app_timer.ticks_since_update()); 102 } 103 } 104} 105 106void RuntimeService::record_safepoint_synchronized() { 107 if (UsePerfData) { 108 _sync_time_ticks->inc(_safepoint_timer.ticks_since_update()); 109 } 110 if (log_is_enabled(Info, safepoint)) { 111 _last_safepoint_sync_time_sec = last_safepoint_time_sec(); 112 } 113} 114 115void RuntimeService::record_safepoint_end() { 116 HS_PRIVATE_SAFEPOINT_END(); 117 118 // Print the time interval for which the app was stopped 119 // during the current safepoint operation. 120 log_info(safepoint)("Total time for which application threads were stopped: %3.7f seconds, Stopping threads took: %3.7f seconds", 121 last_safepoint_time_sec(), _last_safepoint_sync_time_sec); 122 123 // update the time stamp to begin recording app time 124 _app_timer.update(); 125 if (UsePerfData) { 126 _safepoint_time_ticks->inc(_safepoint_timer.ticks_since_update()); 127 } 128} 129 130void RuntimeService::record_application_start() { 131 // update the time stamp to begin recording app time 132 _app_timer.update(); 133} 134 135// Don't need to record application end because we currently 136// exit at a safepoint and record_safepoint_begin() handles updating 137// the application time counter at VM exit. 138 139jlong RuntimeService::safepoint_sync_time_ms() { 140 return UsePerfData ? 141 Management::ticks_to_ms(_sync_time_ticks->get_value()) : -1; 142} 143 144jlong RuntimeService::safepoint_count() { 145 return UsePerfData ? 146 _total_safepoints->get_value() : -1; 147} 148jlong RuntimeService::safepoint_time_ms() { 149 return UsePerfData ? 150 Management::ticks_to_ms(_safepoint_time_ticks->get_value()) : -1; 151} 152 153jlong RuntimeService::application_time_ms() { 154 return UsePerfData ? 155 Management::ticks_to_ms(_application_time_ticks->get_value()) : -1; 156} 157 158#endif // INCLUDE_MANAGEMENT 159