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1 /*
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2 * Copyright 2003-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 # include "incls/_precompiled.incl"
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26 # include "incls/_runtimeService.cpp.incl"
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27
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28 HS_DTRACE_PROBE_DECL(hs_private, safepoint__begin);
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29 HS_DTRACE_PROBE_DECL(hs_private, safepoint__end);
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30
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31 TimeStamp RuntimeService::_app_timer;
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32 TimeStamp RuntimeService::_safepoint_timer;
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33 PerfCounter* RuntimeService::_sync_time_ticks = NULL;
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34 PerfCounter* RuntimeService::_total_safepoints = NULL;
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35 PerfCounter* RuntimeService::_safepoint_time_ticks = NULL;
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36 PerfCounter* RuntimeService::_application_time_ticks = NULL;
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37 PerfCounter* RuntimeService::_thread_interrupt_signaled_count = NULL;
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38 PerfCounter* RuntimeService::_interrupted_before_count = NULL;
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39 PerfCounter* RuntimeService::_interrupted_during_count = NULL;
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40
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41 void RuntimeService::init() {
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42 // Make sure the VM version is initialized
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43 Abstract_VM_Version::initialize();
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44
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45 if (UsePerfData) {
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46 EXCEPTION_MARK;
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47
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48 _sync_time_ticks =
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49 PerfDataManager::create_counter(SUN_RT, "safepointSyncTime",
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50 PerfData::U_Ticks, CHECK);
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51
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52 _total_safepoints =
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53 PerfDataManager::create_counter(SUN_RT, "safepoints",
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54 PerfData::U_Events, CHECK);
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55
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56 _safepoint_time_ticks =
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57 PerfDataManager::create_counter(SUN_RT, "safepointTime",
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58 PerfData::U_Ticks, CHECK);
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59
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60 _application_time_ticks =
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61 PerfDataManager::create_counter(SUN_RT, "applicationTime",
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62 PerfData::U_Ticks, CHECK);
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63
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64
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65 // create performance counters for jvm_version and its capabilities
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66 PerfDataManager::create_constant(SUN_RT, "jvmVersion", PerfData::U_None,
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67 (jlong) Abstract_VM_Version::jvm_version(), CHECK);
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68
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69 // I/O interruption related counters
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70
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71 // thread signaling via os::interrupt()
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72
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73 _thread_interrupt_signaled_count =
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74 PerfDataManager::create_counter(SUN_RT,
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75 "threadInterruptSignaled", PerfData::U_Events, CHECK);
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76
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77 // OS_INTRPT via "check before" in _INTERRUPTIBLE
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78
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79 _interrupted_before_count =
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80 PerfDataManager::create_counter(SUN_RT, "interruptedBeforeIO",
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81 PerfData::U_Events, CHECK);
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82
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83 // OS_INTRPT via "check during" in _INTERRUPTIBLE
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84
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85 _interrupted_during_count =
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86 PerfDataManager::create_counter(SUN_RT, "interruptedDuringIO",
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87 PerfData::U_Events, CHECK);
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88
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89 // The capabilities counter is a binary representation of the VM capabilities in string.
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90 // This string respresentation simplifies the implementation of the client side
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91 // to parse the value.
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92 char capabilities[65];
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93 size_t len = sizeof(capabilities);
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94 memset((void*) capabilities, '0', len);
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95 capabilities[len-1] = '\0';
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96 capabilities[0] = AttachListener::is_attach_supported() ? '1' : '0';
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97 #ifdef KERNEL
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98 capabilities[1] = '1';
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99 #endif // KERNEL
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100 PerfDataManager::create_string_constant(SUN_RT, "jvmCapabilities",
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101 capabilities, CHECK);
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102 }
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103 }
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104
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105 void RuntimeService::record_safepoint_begin() {
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106 HS_DTRACE_PROBE(hs_private, safepoint__begin);
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107 // update the time stamp to begin recording safepoint time
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108 _safepoint_timer.update();
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109 if (UsePerfData) {
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110 _total_safepoints->inc();
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111 if (_app_timer.is_updated()) {
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112 _application_time_ticks->inc(_app_timer.ticks_since_update());
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113 }
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114 }
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115 }
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116
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117 void RuntimeService::record_safepoint_synchronized() {
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118 if (UsePerfData) {
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119 _sync_time_ticks->inc(_safepoint_timer.ticks_since_update());
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120 }
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121 }
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122
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123 void RuntimeService::record_safepoint_end() {
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124 HS_DTRACE_PROBE(hs_private, safepoint__end);
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125 // update the time stamp to begin recording app time
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126 _app_timer.update();
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127 if (UsePerfData) {
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128 _safepoint_time_ticks->inc(_safepoint_timer.ticks_since_update());
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129 }
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130 }
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131
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132 void RuntimeService::record_application_start() {
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133 // update the time stamp to begin recording app time
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134 _app_timer.update();
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135 }
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136
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137 // Don't need to record application end because we currently
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138 // exit at a safepoint and record_safepoint_begin() handles updating
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139 // the application time counter at VM exit.
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140
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141 jlong RuntimeService::safepoint_sync_time_ms() {
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142 return UsePerfData ?
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143 Management::ticks_to_ms(_sync_time_ticks->get_value()) : -1;
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144 }
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145
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146 jlong RuntimeService::safepoint_count() {
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147 return UsePerfData ?
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148 _total_safepoints->get_value() : -1;
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149 }
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150 jlong RuntimeService::safepoint_time_ms() {
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151 return UsePerfData ?
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152 Management::ticks_to_ms(_safepoint_time_ticks->get_value()) : -1;
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153 }
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154
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155 jlong RuntimeService::application_time_ms() {
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156 return UsePerfData ?
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157 Management::ticks_to_ms(_application_time_ticks->get_value()) : -1;
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158 }
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159
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160 void RuntimeService::record_interrupted_before_count() {
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161 if (UsePerfData) {
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162 _interrupted_before_count->inc();
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163 }
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164 }
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165
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166 void RuntimeService::record_interrupted_during_count() {
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167 if (UsePerfData) {
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168 _interrupted_during_count->inc();
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169 }
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170 }
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171
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172 void RuntimeService::record_thread_interrupt_signaled_count() {
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173 if (UsePerfData) {
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174 _thread_interrupt_signaled_count->inc();
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175 }
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176 }
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