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1 /* |
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2 * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #include "precompiled.hpp" |
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26 #include "classfile/classLoader.hpp" |
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27 #include "logging/log.hpp" |
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28 #include "runtime/vm_version.hpp" |
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29 #include "services/attachListener.hpp" |
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30 #include "services/management.hpp" |
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31 #include "services/runtimeService.hpp" |
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32 #include "utilities/dtrace.hpp" |
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33 #include "utilities/exceptions.hpp" |
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34 #include "utilities/macros.hpp" |
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35 |
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36 #if INCLUDE_MANAGEMENT |
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37 TimeStamp RuntimeService::_app_timer; |
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38 TimeStamp RuntimeService::_safepoint_timer; |
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39 PerfCounter* RuntimeService::_sync_time_ticks = NULL; |
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40 PerfCounter* RuntimeService::_total_safepoints = NULL; |
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41 PerfCounter* RuntimeService::_safepoint_time_ticks = NULL; |
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42 PerfCounter* RuntimeService::_application_time_ticks = NULL; |
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43 double RuntimeService::_last_safepoint_sync_time_sec = 0.0; |
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44 |
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45 void RuntimeService::init() { |
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46 |
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47 if (UsePerfData) { |
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48 EXCEPTION_MARK; |
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49 |
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50 _sync_time_ticks = |
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51 PerfDataManager::create_counter(SUN_RT, "safepointSyncTime", |
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52 PerfData::U_Ticks, CHECK); |
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53 |
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54 _total_safepoints = |
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55 PerfDataManager::create_counter(SUN_RT, "safepoints", |
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56 PerfData::U_Events, CHECK); |
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57 |
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58 _safepoint_time_ticks = |
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59 PerfDataManager::create_counter(SUN_RT, "safepointTime", |
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60 PerfData::U_Ticks, CHECK); |
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61 |
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62 _application_time_ticks = |
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63 PerfDataManager::create_counter(SUN_RT, "applicationTime", |
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64 PerfData::U_Ticks, CHECK); |
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65 |
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66 |
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67 // create performance counters for jvm_version and its capabilities |
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68 PerfDataManager::create_constant(SUN_RT, "jvmVersion", PerfData::U_None, |
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69 (jlong) Abstract_VM_Version::jvm_version(), CHECK); |
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70 |
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71 // The capabilities counter is a binary representation of the VM capabilities in string. |
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72 // This string respresentation simplifies the implementation of the client side |
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73 // to parse the value. |
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74 char capabilities[65]; |
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75 size_t len = sizeof(capabilities); |
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76 memset((void*) capabilities, '0', len); |
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77 capabilities[len-1] = '\0'; |
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78 capabilities[0] = AttachListener::is_attach_supported() ? '1' : '0'; |
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79 #if INCLUDE_SERVICES |
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80 capabilities[1] = '1'; |
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81 #endif // INCLUDE_SERVICES |
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82 PerfDataManager::create_string_constant(SUN_RT, "jvmCapabilities", |
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83 capabilities, CHECK); |
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84 } |
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85 } |
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86 |
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87 void RuntimeService::record_safepoint_begin() { |
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88 HS_PRIVATE_SAFEPOINT_BEGIN(); |
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89 |
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90 // Print the time interval in which the app was executing |
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91 if (_app_timer.is_updated()) { |
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92 log_info(safepoint)("Application time: %3.7f seconds", last_application_time_sec()); |
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93 } |
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94 |
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95 // update the time stamp to begin recording safepoint time |
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96 _safepoint_timer.update(); |
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97 _last_safepoint_sync_time_sec = 0.0; |
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98 if (UsePerfData) { |
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99 _total_safepoints->inc(); |
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100 if (_app_timer.is_updated()) { |
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101 _application_time_ticks->inc(_app_timer.ticks_since_update()); |
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102 } |
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103 } |
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104 } |
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105 |
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106 void RuntimeService::record_safepoint_synchronized() { |
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107 if (UsePerfData) { |
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108 _sync_time_ticks->inc(_safepoint_timer.ticks_since_update()); |
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109 } |
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110 if (log_is_enabled(Info, safepoint)) { |
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111 _last_safepoint_sync_time_sec = last_safepoint_time_sec(); |
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112 } |
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113 } |
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114 |
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115 void RuntimeService::record_safepoint_end() { |
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116 HS_PRIVATE_SAFEPOINT_END(); |
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117 |
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118 // Print the time interval for which the app was stopped |
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119 // during the current safepoint operation. |
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120 log_info(safepoint)("Total time for which application threads were stopped: %3.7f seconds, Stopping threads took: %3.7f seconds", |
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121 last_safepoint_time_sec(), _last_safepoint_sync_time_sec); |
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122 |
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123 // update the time stamp to begin recording app time |
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124 _app_timer.update(); |
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125 if (UsePerfData) { |
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126 _safepoint_time_ticks->inc(_safepoint_timer.ticks_since_update()); |
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127 } |
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128 } |
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129 |
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130 void RuntimeService::record_application_start() { |
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131 // update the time stamp to begin recording app time |
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132 _app_timer.update(); |
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133 } |
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134 |
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135 // Don't need to record application end because we currently |
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136 // exit at a safepoint and record_safepoint_begin() handles updating |
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137 // the application time counter at VM exit. |
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138 |
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139 jlong RuntimeService::safepoint_sync_time_ms() { |
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140 return UsePerfData ? |
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141 Management::ticks_to_ms(_sync_time_ticks->get_value()) : -1; |
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142 } |
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143 |
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144 jlong RuntimeService::safepoint_count() { |
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145 return UsePerfData ? |
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146 _total_safepoints->get_value() : -1; |
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147 } |
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148 jlong RuntimeService::safepoint_time_ms() { |
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149 return UsePerfData ? |
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150 Management::ticks_to_ms(_safepoint_time_ticks->get_value()) : -1; |
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151 } |
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152 |
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153 jlong RuntimeService::application_time_ms() { |
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154 return UsePerfData ? |
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155 Management::ticks_to_ms(_application_time_ticks->get_value()) : -1; |
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156 } |
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157 |
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158 #endif // INCLUDE_MANAGEMENT |