0
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1 /*
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2 * Copyright 2001-2005 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/_perfData.cpp.incl"
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27
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28 PerfDataList* PerfDataManager::_all = NULL;
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29 PerfDataList* PerfDataManager::_sampled = NULL;
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30 PerfDataList* PerfDataManager::_constants = NULL;
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31
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32 /*
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33 * The jvmstat global and subsysem jvmstat counter name spaces. The top
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34 * level name spaces imply the interface stability level of the counter,
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35 * which generally follows the Java package, class, and property naming
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36 * conventions. The CounterNS enumeration values should be used to index
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37 * into this array.
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38 */
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39 const char* PerfDataManager::_name_spaces[] = {
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40 // top level name spaces
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41 "java", // stable and supported name space
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42 "com.sun", // unstable but supported name space
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43 "sun", // unstable and unsupported name space
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44 // subsystem name spaces
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45 "java.gc", // Garbage Collection name spaces
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46 "com.sun.gc",
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47 "sun.gc",
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48 "java.ci", // Compiler name spaces
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49 "com.sun.ci",
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50 "sun.ci",
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51 "java.cls", // Class Loader name spaces
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52 "com.sun.cls",
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53 "sun.cls",
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54 "java.rt", // Runtime name spaces
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55 "com.sun.rt",
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56 "sun.rt",
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57 "java.os", // Operating System name spaces
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58 "com.sun.os",
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59 "sun.os",
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60 "java.threads", // Threads System name spaces
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61 "com.sun.threads",
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62 "sun.threads",
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63 "java.property", // Java Property name spaces
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64 "com.sun.property",
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65 "sun.property",
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66 "",
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67 };
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68
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69 PerfData::PerfData(CounterNS ns, const char* name, Units u, Variability v)
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70 : _name(NULL), _u(u), _v(v), _valuep(NULL),
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71 _on_c_heap(false) {
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72
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73 const char* prefix = PerfDataManager::ns_to_string(ns);
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74
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75 _name = NEW_C_HEAP_ARRAY(char, strlen(name) + strlen(prefix) + 2);
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76 assert(_name != NULL && strlen(name) != 0, "invalid name");
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77
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78 if (ns == NULL_NS) {
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79 // No prefix is added to counters with the NULL_NS namespace.
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80 strcpy(_name, name);
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81 // set the F_Supported flag based on the counter name prefix.
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82 if (PerfDataManager::is_stable_supported(_name) ||
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83 PerfDataManager::is_unstable_supported(_name)) {
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84 _flags = F_Supported;
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85 }
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86 else {
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87 _flags = F_None;
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88 }
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89 }
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90 else {
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91 sprintf(_name, "%s.%s", prefix, name);
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92 // set the F_Supported flag based on the given namespace.
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93 if (PerfDataManager::is_stable_supported(ns) ||
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94 PerfDataManager::is_unstable_supported(ns)) {
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95 _flags = F_Supported;
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96 }
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97 else {
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98 _flags = F_None;
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99 }
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100 }
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101 }
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102
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103 PerfData::~PerfData() {
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104 if (_name != NULL) {
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105 FREE_C_HEAP_ARRAY(char, _name);
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106 }
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107 if (is_on_c_heap()) {
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108 FREE_C_HEAP_ARRAY(PerfDataEntry, _pdep);
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109 }
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110 }
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111
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112 void PerfData::create_entry(BasicType dtype, size_t dsize, size_t vlen) {
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113
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114 size_t dlen = vlen==0 ? 1 : vlen;
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115
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116 size_t namelen = strlen(name()) + 1; // include null terminator
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117 size_t size = sizeof(PerfDataEntry) + namelen;
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118 size_t pad_length = ((size % dsize) == 0) ? 0 : dsize - (size % dsize);
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119 size += pad_length;
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120 size_t data_start = size;
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121 size += (dsize * dlen);
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122
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123 // align size to assure allocation in units of 8 bytes
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124 int align = sizeof(jlong) - 1;
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125 size = ((size + align) & ~align);
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126 char* psmp = PerfMemory::alloc(size);
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127
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128 if (psmp == NULL) {
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129 // out of PerfMemory memory resources. allocate on the C heap
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130 // to avoid vm termination.
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131 psmp = NEW_C_HEAP_ARRAY(char, size);
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132 _on_c_heap = true;
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133 }
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134
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135 // compute the addresses for the name and data
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136 char* cname = psmp + sizeof(PerfDataEntry);
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137
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138 // data is in the last dsize*dlen bytes of the entry
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139 void* valuep = (void*) (psmp + data_start);
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140
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141 assert(is_on_c_heap() || PerfMemory::contains(cname), "just checking");
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142 assert(is_on_c_heap() || PerfMemory::contains((char*)valuep), "just checking");
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143
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144 // copy the name, including null terminator, into PerfData memory
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145 strcpy(cname, name());
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146
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147
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148 // set the header values in PerfData memory
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149 PerfDataEntry* pdep = (PerfDataEntry*)psmp;
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150 pdep->entry_length = (jint)size;
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151 pdep->name_offset = (jint) ((uintptr_t) cname - (uintptr_t) psmp);
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152 pdep->vector_length = (jint)vlen;
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153 pdep->data_type = (jbyte) type2char(dtype);
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154 pdep->data_units = units();
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155 pdep->data_variability = variability();
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156 pdep->flags = (jbyte)flags();
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157 pdep->data_offset = (jint) data_start;
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158
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159 if (PerfTraceDataCreation) {
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160 tty->print("name = %s, dtype = %d, variability = %d,"
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161 " units = %d, dsize = %d, vlen = %d,"
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162 " pad_length = %d, size = %d, on_c_heap = %s,"
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163 " address = " INTPTR_FORMAT ","
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164 " data address = " INTPTR_FORMAT "\n",
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165 cname, dtype, variability(),
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166 units(), dsize, vlen,
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167 pad_length, size, is_on_c_heap() ? "TRUE":"FALSE",
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168 psmp, valuep);
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169 }
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170
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171 // record the start of the entry and the location of the data field.
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172 _pdep = pdep;
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173 _valuep = valuep;
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174
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175 // mark the PerfData memory region as having been updated.
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176 PerfMemory::mark_updated();
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177 }
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178
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179 PerfLong::PerfLong(CounterNS ns, const char* namep, Units u, Variability v)
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180 : PerfData(ns, namep, u, v) {
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181
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182 create_entry(T_LONG, sizeof(jlong));
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183 }
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184
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185 int PerfLong::format(char* buffer, int length) {
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186 return jio_snprintf(buffer, length,"%lld", *(jlong*)_valuep);
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187 }
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188
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189 PerfLongVariant::PerfLongVariant(CounterNS ns, const char* namep, Units u,
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190 Variability v, jlong* sampled)
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191 : PerfLong(ns, namep, u, v),
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192 _sampled(sampled), _sample_helper(NULL) {
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193
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194 sample();
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195 }
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196
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197 PerfLongVariant::PerfLongVariant(CounterNS ns, const char* namep, Units u,
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198 Variability v, PerfLongSampleHelper* helper)
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199 : PerfLong(ns, namep, u, v),
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200 _sampled(NULL), _sample_helper(helper) {
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201
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202 sample();
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203 }
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204
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205 void PerfLongVariant::sample() {
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206
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207 assert(_sample_helper != NULL || _sampled != NULL, "unexpected state");
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208
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209 if (_sample_helper != NULL) {
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210 *(jlong*)_valuep = _sample_helper->take_sample();
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211 }
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212 else if (_sampled != NULL) {
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213 *(jlong*)_valuep = *_sampled;
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214 }
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215 }
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216
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217 PerfByteArray::PerfByteArray(CounterNS ns, const char* namep, Units u,
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218 Variability v, jint length)
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219 : PerfData(ns, namep, u, v), _length(length) {
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220
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221 create_entry(T_BYTE, sizeof(jbyte), (size_t)_length);
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222 }
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223
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224 void PerfString::set_string(const char* s2) {
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225
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226 // copy n bytes of the string, assuring the null string is
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227 // copied if s2 == NULL.
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228 strncpy((char *)_valuep, s2 == NULL ? "" : s2, _length);
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229
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230 // assure the string is null terminated when strlen(s2) >= _length
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231 ((char*)_valuep)[_length-1] = '\0';
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232 }
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233
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234 int PerfString::format(char* buffer, int length) {
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235 return jio_snprintf(buffer, length, "%s", (char*)_valuep);
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236 }
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237
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238 PerfStringConstant::PerfStringConstant(CounterNS ns, const char* namep,
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239 const char* initial_value)
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240 : PerfString(ns, namep, V_Constant,
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241 initial_value == NULL ? 1 :
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242 MIN2((jint)(strlen((char*)initial_value)+1),
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243 (jint)(PerfMaxStringConstLength+1)),
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244 initial_value) {
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245
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246 if (PrintMiscellaneous && Verbose) {
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247 if (is_valid() && initial_value != NULL &&
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248 ((jint)strlen(initial_value) > (jint)PerfMaxStringConstLength)) {
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249
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250 warning("Truncating PerfStringConstant: name = %s,"
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251 " length = " INT32_FORMAT ","
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252 " PerfMaxStringConstLength = " INT32_FORMAT "\n",
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253 namep,
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254 (jint)strlen(initial_value),
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255 (jint)PerfMaxStringConstLength);
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256 }
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257 }
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258 }
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259
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260
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261
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262
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263
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264
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265 void PerfDataManager::destroy() {
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266
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267 if (_all == NULL)
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268 // destroy already called, or initialization never happened
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269 return;
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270
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271 for (int index = 0; index < _all->length(); index++) {
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272 PerfData* p = _all->at(index);
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273 delete p;
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274 }
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275
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276 delete(_all);
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277 delete(_sampled);
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278 delete(_constants);
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279
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280 _all = NULL;
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281 _sampled = NULL;
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282 _constants = NULL;
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283 }
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284
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285 void PerfDataManager::add_item(PerfData* p, bool sampled) {
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286
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287 MutexLocker ml(PerfDataManager_lock);
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288
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289 if (_all == NULL) {
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290 _all = new PerfDataList(100);
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291 }
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292
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293 assert(!_all->contains(p->name()), "duplicate name added");
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294
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295 // add to the list of all perf data items
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296 _all->append(p);
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297
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298 if (p->variability() == PerfData::V_Constant) {
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299 if (_constants == NULL) {
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300 _constants = new PerfDataList(25);
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301 }
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302 _constants->append(p);
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303 return;
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304 }
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305
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306 if (sampled) {
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307 if (_sampled == NULL) {
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308 _sampled = new PerfDataList(25);
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309 }
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310 _sampled->append(p);
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311 }
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312 }
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313
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314 PerfDataList* PerfDataManager::all() {
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315
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316 MutexLocker ml(PerfDataManager_lock);
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317
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318 if (_all == NULL)
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319 return NULL;
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320
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321 PerfDataList* clone = _all->clone();
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322 return clone;
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323 }
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324
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325 PerfDataList* PerfDataManager::sampled() {
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326
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327 MutexLocker ml(PerfDataManager_lock);
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328
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329 if (_sampled == NULL)
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330 return NULL;
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331
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332 PerfDataList* clone = _sampled->clone();
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333 return clone;
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334 }
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335
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336 PerfDataList* PerfDataManager::constants() {
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337
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338 MutexLocker ml(PerfDataManager_lock);
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339
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340 if (_constants == NULL)
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341 return NULL;
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342
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343 PerfDataList* clone = _constants->clone();
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344 return clone;
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345 }
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346
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347 char* PerfDataManager::counter_name(const char* ns, const char* name) {
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348 assert(ns != NULL, "ns string required");
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349 assert(name != NULL, "name string required");
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350
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351 size_t len = strlen(ns) + strlen(name) + 2;
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352 char* result = NEW_RESOURCE_ARRAY(char, len);
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353 sprintf(result, "%s.%s", ns, name);
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354 return result;
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355 }
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356
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357 char* PerfDataManager::name_space(const char* ns, const char* sub,
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358 int instance) {
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359 char intbuf[40];
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360 jio_snprintf(intbuf, 40, UINT32_FORMAT, instance);
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361 return name_space(ns, name_space(sub, intbuf));
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362 }
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363
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364 char *PerfDataManager::name_space(const char* ns, int instance) {
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365 char intbuf[40];
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366 jio_snprintf(intbuf, 40, UINT32_FORMAT, instance);
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367 return name_space(ns, intbuf);
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368 }
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369
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370 PerfStringConstant* PerfDataManager::create_string_constant(CounterNS ns,
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371 const char* name,
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372 const char* s,
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373 TRAPS) {
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374
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375 PerfStringConstant* p = new PerfStringConstant(ns, name, s);
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376
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377 if (!p->is_valid()) {
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378 // allocation of native resources failed.
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379 delete p;
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380 THROW_0(vmSymbols::java_lang_OutOfMemoryError());
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381 }
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382
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383 add_item(p, false);
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384
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385 return p;
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386 }
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387
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388 PerfLongConstant* PerfDataManager::create_long_constant(CounterNS ns,
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389 const char* name,
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390 PerfData::Units u,
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391 jlong val, TRAPS) {
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392
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393 PerfLongConstant* p = new PerfLongConstant(ns, name, u, val);
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394
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395 if (!p->is_valid()) {
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396 // allocation of native resources failed.
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397 delete p;
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398 THROW_0(vmSymbols::java_lang_OutOfMemoryError());
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399 }
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400
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401 add_item(p, false);
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402
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403 return p;
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404 }
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405
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406 PerfStringVariable* PerfDataManager::create_string_variable(CounterNS ns,
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407 const char* name,
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408 jint max_length,
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409 const char* s,
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410 TRAPS) {
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411
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412 if (max_length == 0 && s != NULL) max_length = (jint)strlen(s);
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413
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414 assert(max_length != 0, "PerfStringVariable with length 0");
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415
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416 PerfStringVariable* p = new PerfStringVariable(ns, name, max_length, s);
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417
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418 if (!p->is_valid()) {
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419 // allocation of native resources failed.
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420 delete p;
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421 THROW_0(vmSymbols::java_lang_OutOfMemoryError());
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422 }
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423
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424 add_item(p, false);
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425
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426 return p;
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427 }
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428
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429 PerfLongVariable* PerfDataManager::create_long_variable(CounterNS ns,
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430 const char* name,
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431 PerfData::Units u,
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432 jlong ival, TRAPS) {
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433
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434 PerfLongVariable* p = new PerfLongVariable(ns, name, u, ival);
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435
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436 if (!p->is_valid()) {
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437 // allocation of native resources failed.
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438 delete p;
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439 THROW_0(vmSymbols::java_lang_OutOfMemoryError());
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440 }
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441
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442 add_item(p, false);
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443
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444 return p;
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445 }
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446
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447 PerfLongVariable* PerfDataManager::create_long_variable(CounterNS ns,
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448 const char* name,
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449 PerfData::Units u,
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450 jlong* sp, TRAPS) {
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451
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452 // Sampled counters not supported if UsePerfData is false
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453 if (!UsePerfData) return NULL;
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454
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455 PerfLongVariable* p = new PerfLongVariable(ns, name, u, sp);
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456
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457 if (!p->is_valid()) {
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458 // allocation of native resources failed.
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459 delete p;
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460 THROW_0(vmSymbols::java_lang_OutOfMemoryError());
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461 }
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462
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463 add_item(p, true);
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464
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465 return p;
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466 }
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467
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468 PerfLongVariable* PerfDataManager::create_long_variable(CounterNS ns,
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469 const char* name,
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470 PerfData::Units u,
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471 PerfSampleHelper* sh,
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472 TRAPS) {
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473
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474 // Sampled counters not supported if UsePerfData is false
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475 if (!UsePerfData) return NULL;
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476
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477 PerfLongVariable* p = new PerfLongVariable(ns, name, u, sh);
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478
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479 if (!p->is_valid()) {
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480 // allocation of native resources failed.
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481 delete p;
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482 THROW_0(vmSymbols::java_lang_OutOfMemoryError());
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483 }
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484
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485 add_item(p, true);
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486
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487 return p;
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488 }
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489
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490 PerfLongCounter* PerfDataManager::create_long_counter(CounterNS ns,
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491 const char* name,
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492 PerfData::Units u,
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493 jlong ival, TRAPS) {
|
|
494
|
|
495 PerfLongCounter* p = new PerfLongCounter(ns, name, u, ival);
|
|
496
|
|
497 if (!p->is_valid()) {
|
|
498 // allocation of native resources failed.
|
|
499 delete p;
|
|
500 THROW_0(vmSymbols::java_lang_OutOfMemoryError());
|
|
501 }
|
|
502
|
|
503 add_item(p, false);
|
|
504
|
|
505 return p;
|
|
506 }
|
|
507
|
|
508 PerfLongCounter* PerfDataManager::create_long_counter(CounterNS ns,
|
|
509 const char* name,
|
|
510 PerfData::Units u,
|
|
511 jlong* sp, TRAPS) {
|
|
512
|
|
513 // Sampled counters not supported if UsePerfData is false
|
|
514 if (!UsePerfData) return NULL;
|
|
515
|
|
516 PerfLongCounter* p = new PerfLongCounter(ns, name, u, sp);
|
|
517
|
|
518 if (!p->is_valid()) {
|
|
519 // allocation of native resources failed.
|
|
520 delete p;
|
|
521 THROW_0(vmSymbols::java_lang_OutOfMemoryError());
|
|
522 }
|
|
523
|
|
524 add_item(p, true);
|
|
525
|
|
526 return p;
|
|
527 }
|
|
528
|
|
529 PerfLongCounter* PerfDataManager::create_long_counter(CounterNS ns,
|
|
530 const char* name,
|
|
531 PerfData::Units u,
|
|
532 PerfSampleHelper* sh,
|
|
533 TRAPS) {
|
|
534
|
|
535 // Sampled counters not supported if UsePerfData is false
|
|
536 if (!UsePerfData) return NULL;
|
|
537
|
|
538 PerfLongCounter* p = new PerfLongCounter(ns, name, u, sh);
|
|
539
|
|
540 if (!p->is_valid()) {
|
|
541 // allocation of native resources failed.
|
|
542 delete p;
|
|
543 THROW_0(vmSymbols::java_lang_OutOfMemoryError());
|
|
544 }
|
|
545
|
|
546 add_item(p, true);
|
|
547
|
|
548 return p;
|
|
549 }
|
|
550
|
|
551 PerfDataList::PerfDataList(int length) {
|
|
552
|
|
553 _set = new(ResourceObj::C_HEAP) PerfDataArray(length, true);
|
|
554 }
|
|
555
|
|
556 PerfDataList::PerfDataList(PerfDataList* p) {
|
|
557
|
|
558 _set = new(ResourceObj::C_HEAP) PerfDataArray(p->length(), true);
|
|
559
|
|
560 _set->appendAll(p->get_impl());
|
|
561 }
|
|
562
|
|
563 PerfDataList::~PerfDataList() {
|
|
564
|
|
565 delete _set;
|
|
566
|
|
567 }
|
|
568
|
|
569 bool PerfDataList::by_name(void* name, PerfData* pd) {
|
|
570
|
|
571 if (pd == NULL)
|
|
572 return false;
|
|
573
|
|
574 return strcmp((const char*)name, pd->name()) == 0;
|
|
575 }
|
|
576
|
|
577 PerfData* PerfDataList::find_by_name(const char* name) {
|
|
578
|
|
579 int i = _set->find((void*)name, PerfDataList::by_name);
|
|
580
|
|
581 if (i >= 0 && i <= _set->length())
|
|
582 return _set->at(i);
|
|
583 else
|
|
584 return NULL;
|
|
585 }
|
|
586
|
|
587 PerfDataList* PerfDataList::clone() {
|
|
588
|
|
589 PerfDataList* copy = new PerfDataList(this);
|
|
590
|
|
591 assert(copy != NULL, "just checking");
|
|
592
|
|
593 return copy;
|
|
594 }
|