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annotate src/share/vm/services/diagnosticArgument.cpp @ 10405:f2110083203d

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8005849: JEP 167: Event-Based JVM Tracing Reviewed-by: acorn, coleenp, sla Contributed-by: Karen Kinnear <karen.kinnear@oracle.com>, Bengt Rutisson <bengt.rutisson@oracle.com>, Calvin Cheung <calvin.cheung@oracle.com>, Erik Gahlin <erik.gahlin@oracle.com>, Erik Helin <erik.helin@oracle.com>, Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>, Keith McGuigan <keith.mcguigan@oracle.com>, Mattias Tobiasson <mattias.tobiasson@oracle.com>, Markus Gronlund <markus.gronlund@oracle.com>, Mikael Auno <mikael.auno@oracle.com>, Nils Eliasson <nils.eliasson@oracle.com>, Nils Loodin <nils.loodin@oracle.com>, Rickard Backman <rickard.backman@oracle.com>, Staffan Larsen <staffan.larsen@oracle.com>, Stefan Karlsson <stefan.karlsson@oracle.com>, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>
author sla
date Mon, 10 Jun 2013 11:30:51 +0200
parents b0301c02f38e
children ef57c43512d6
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1 /*
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2 * Copyright (c) 2011, 2013, 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 "memory/allocation.inline.hpp"
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27 #include "memory/resourceArea.hpp"
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28 #include "runtime/thread.hpp"
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29 #include "services/diagnosticArgument.hpp"
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30
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31 void GenDCmdArgument::read_value(const char* str, size_t len, TRAPS) {
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32 /* NOTE:Some argument types doesn't require a value,
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33 * for instance boolean arguments: "enableFeatureX". is
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34 * equivalent to "enableFeatureX=true". In these cases,
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35 * str will be null. This is perfectly valid.
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36 * All argument types must perform null checks on str.
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37 */
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38
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39 if (is_set() && !allow_multiple()) {
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40 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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41 "Duplicates in diagnostic command arguments\n");
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42 }
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43 parse_value(str, len, CHECK);
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44 set_is_set(true);
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45 }
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46
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47 void GenDCmdArgument::to_string(jlong l, char* buf, size_t len) {
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48 jio_snprintf(buf, len, INT64_FORMAT, l);
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49 }
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50
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51 void GenDCmdArgument::to_string(bool b, char* buf, size_t len) {
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52 jio_snprintf(buf, len, b ? "true" : "false");
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53 }
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54
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55 void GenDCmdArgument::to_string(NanoTimeArgument n, char* buf, size_t len) {
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56 jio_snprintf(buf, len, INT64_FORMAT, n._nanotime);
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57 }
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58
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59 void GenDCmdArgument::to_string(MemorySizeArgument m, char* buf, size_t len) {
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60 jio_snprintf(buf, len, INT64_FORMAT, m._size);
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61 }
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62
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63 void GenDCmdArgument::to_string(char* c, char* buf, size_t len) {
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64 jio_snprintf(buf, len, "%s", c);
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65 }
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66
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67 void GenDCmdArgument::to_string(StringArrayArgument* f, char* buf, size_t len) {
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68 int length = f->array()->length();
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69 size_t written = 0;
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70 buf[0] = 0;
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71 for (int i = 0; i < length; i++) {
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72 char* next_str = f->array()->at(i);
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73 size_t next_size = strlen(next_str);
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74 //Check if there's room left to write next element
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75 if (written + next_size > len) {
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76 return;
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77 }
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78 //Actually write element
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79 strcat(buf, next_str);
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80 written += next_size;
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81 //Check if there's room left for the comma
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82 if (i < length-1 && len - written > 0) {
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83 strcat(buf, ",");
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84 }
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85 }
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86 }
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87
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88 template <> void DCmdArgument<jlong>::parse_value(const char* str,
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89 size_t len, TRAPS) {
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90 int scanned = -1;
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91 if (str == NULL
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92 || sscanf(str, JLONG_FORMAT"%n", &_value, &scanned) != 1
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93 || (size_t)scanned != len)
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94 {
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95 ResourceMark rm;
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96
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97 char* buf = NEW_RESOURCE_ARRAY(char, len + 1);
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98 strncpy(buf, str, len);
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99 buf[len] = '\0';
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100 Exceptions::fthrow(THREAD_AND_LOCATION, vmSymbols::java_lang_IllegalArgumentException(),
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101 "Integer parsing error in command argument '%s'. Could not parse: %s.", _name, buf);
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102 }
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103 }
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104
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105 template <> void DCmdArgument<jlong>::init_value(TRAPS) {
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106 if (has_default()) {
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107 this->parse_value(_default_string, strlen(_default_string), THREAD);
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108 if (HAS_PENDING_EXCEPTION) {
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109 fatal("Default string must be parseable");
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110 }
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111 } else {
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112 set_value(0);
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113 }
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114 }
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115
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116 template <> void DCmdArgument<jlong>::destroy_value() { }
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117
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118 template <> void DCmdArgument<bool>::parse_value(const char* str,
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119 size_t len, TRAPS) {
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120 // len is the length of the current token starting at str
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121 if (len == 0) {
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122 set_value(true);
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123 } else {
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124 if (len == strlen("true") && strncasecmp(str, "true", len) == 0) {
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125 set_value(true);
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126 } else if (len == strlen("false") && strncasecmp(str, "false", len) == 0) {
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127 set_value(false);
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128 } else {
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129 ResourceMark rm;
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130
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131 char* buf = NEW_RESOURCE_ARRAY(char, len + 1);
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132 strncpy(buf, str, len);
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133 buf[len] = '\0';
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134 Exceptions::fthrow(THREAD_AND_LOCATION, vmSymbols::java_lang_IllegalArgumentException(),
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135 "Boolean parsing error in command argument '%s'. Could not parse: %s.", _name, buf);
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136 }
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137 }
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138 }
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139
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140 template <> void DCmdArgument<bool>::init_value(TRAPS) {
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141 if (has_default()) {
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142 this->parse_value(_default_string, strlen(_default_string), THREAD);
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143 if (HAS_PENDING_EXCEPTION) {
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144 fatal("Default string must be parsable");
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145 }
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146 } else {
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147 set_value(false);
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148 }
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149 }
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150
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151 template <> void DCmdArgument<bool>::destroy_value() { }
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152
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153 template <> void DCmdArgument<char*>::parse_value(const char* str,
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154 size_t len, TRAPS) {
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155 if (str == NULL) {
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156 _value = NULL;
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157 } else {
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diff changeset
158 _value = NEW_C_HEAP_ARRAY(char, len+1, mtInternal);
4932
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159 strncpy(_value, str, len);
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diff changeset
160 _value[len] = 0;
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diff changeset
161 }
4133
3b688d6ff3d0 7104647: Adding a diagnostic command framework
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parents:
diff changeset
162 }
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163
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diff changeset
164 template <> void DCmdArgument<char*>::init_value(TRAPS) {
4932
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165 if (has_default() && _default_string != NULL) {
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166 this->parse_value(_default_string, strlen(_default_string), THREAD);
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167 if (HAS_PENDING_EXCEPTION) {
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168 fatal("Default string must be parsable");
4133
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169 }
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170 } else {
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171 set_value(NULL);
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parents:
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172 }
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parents:
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173 }
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174
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175 template <> void DCmdArgument<char*>::destroy_value() {
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176 if (_value != NULL) {
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177 FREE_C_HEAP_ARRAY(char, _value, mtInternal);
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178 set_value(NULL);
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179 }
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180 }
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181
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182 template <> void DCmdArgument<NanoTimeArgument>::parse_value(const char* str,
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183 size_t len, TRAPS) {
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184 if (str == NULL) {
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185 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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f2110083203d 8005849: JEP 167: Event-Based JVM Tracing
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186 "Integer parsing error nanotime value: syntax error, value is null");
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187 }
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188
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189 int argc = sscanf(str, JLONG_FORMAT, &_value._time);
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190 if (argc != 1) {
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191 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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192 "Integer parsing error nanotime value: syntax error");
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193 }
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194 size_t idx = 0;
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195 while(idx < len && isdigit(str[idx])) {
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196 idx++;
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197 }
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198 if (idx == len) {
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199 // only accept missing unit if the value is 0
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200 if (_value._time != 0) {
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201 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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202 "Integer parsing error nanotime value: unit required");
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203 } else {
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204 _value._nanotime = 0;
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205 strcpy(_value._unit, "ns");
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206 return;
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207 }
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208 } else if(len - idx > 2) {
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209 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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210 "Integer parsing error nanotime value: illegal unit");
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211 } else {
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212 strncpy(_value._unit, &str[idx], len - idx);
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213 /*Write an extra null termination. This is safe because _value._unit
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214 * is declared as char[3], and length is checked to be not larger than
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215 * two above. Also, this is necessary, since length might be 1, and the
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216 * default value already in the string is ns, which is two chars.
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217 */
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218 _value._unit[len-idx] = '\0';
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219 }
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220
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221 if (strcmp(_value._unit, "ns") == 0) {
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222 _value._nanotime = _value._time;
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223 } else if (strcmp(_value._unit, "us") == 0) {
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224 _value._nanotime = _value._time * 1000;
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225 } else if (strcmp(_value._unit, "ms") == 0) {
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226 _value._nanotime = _value._time * 1000 * 1000;
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227 } else if (strcmp(_value._unit, "s") == 0) {
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228 _value._nanotime = _value._time * 1000 * 1000 * 1000;
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229 } else if (strcmp(_value._unit, "m") == 0) {
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230 _value._nanotime = _value._time * 60 * 1000 * 1000 * 1000;
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231 } else if (strcmp(_value._unit, "h") == 0) {
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232 _value._nanotime = _value._time * 60 * 60 * 1000 * 1000 * 1000;
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233 } else if (strcmp(_value._unit, "d") == 0) {
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234 _value._nanotime = _value._time * 24 * 60 * 60 * 1000 * 1000 * 1000;
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235 } else {
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236 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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237 "Integer parsing error nanotime value: illegal unit");
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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238 }
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239 }
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240
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241 template <> void DCmdArgument<NanoTimeArgument>::init_value(TRAPS) {
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242 if (has_default()) {
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243 this->parse_value(_default_string, strlen(_default_string), THREAD);
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diff changeset
244 if (HAS_PENDING_EXCEPTION) {
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245 fatal("Default string must be parsable");
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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diff changeset
246 }
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247 } else {
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diff changeset
248 _value._time = 0;
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249 _value._nanotime = 0;
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250 strcmp(_value._unit, "ns");
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diff changeset
251 }
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diff changeset
252 }
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diff changeset
253
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diff changeset
254 template <> void DCmdArgument<NanoTimeArgument>::destroy_value() { }
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255
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256 // WARNING StringArrayArgument can only be used as an option, it cannot be
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diff changeset
257 // used as an argument with the DCmdParser
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258
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diff changeset
259 template <> void DCmdArgument<StringArrayArgument*>::parse_value(const char* str,
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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diff changeset
260 size_t len, TRAPS) {
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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diff changeset
261 _value->add(str,len);
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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diff changeset
262 }
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diff changeset
263
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diff changeset
264 template <> void DCmdArgument<StringArrayArgument*>::init_value(TRAPS) {
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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diff changeset
265 _value = new StringArrayArgument();
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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diff changeset
266 _allow_multiple = true;
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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diff changeset
267 if (has_default()) {
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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diff changeset
268 fatal("StringArrayArgument cannot have default value");
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parents: 4849
diff changeset
269 }
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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diff changeset
270 }
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diff changeset
271
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272 template <> void DCmdArgument<StringArrayArgument*>::destroy_value() {
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diff changeset
273 if (_value != NULL) {
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diff changeset
274 delete _value;
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275 set_value(NULL);
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diff changeset
276 }
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diff changeset
277 }
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diff changeset
278
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diff changeset
279 template <> void DCmdArgument<MemorySizeArgument>::parse_value(const char* str,
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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diff changeset
280 size_t len, TRAPS) {
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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diff changeset
281 if (str == NULL) {
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diff changeset
282 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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diff changeset
283 "Integer parsing error nanotime value: syntax error");
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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diff changeset
284 }
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285
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diff changeset
286 if (*str == '-') {
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diff changeset
287 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
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diff changeset
288 "Parsing error memory size value: negative values not allowed");
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289 }
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290 int res = sscanf(str, UINT64_FORMAT "%c", &_value._val, &_value._multiplier);
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diff changeset
291 if (res == 2) {
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diff changeset
292 switch (_value._multiplier) {
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diff changeset
293 case 'k': case 'K':
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diff changeset
294 _value._size = _value._val * 1024;
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diff changeset
295 break;
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diff changeset
296 case 'm': case 'M':
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diff changeset
297 _value._size = _value._val * 1024 * 1024;
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diff changeset
298 break;
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diff changeset
299 case 'g': case 'G':
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diff changeset
300 _value._size = _value._val * 1024 * 1024 * 1024;
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diff changeset
301 break;
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diff changeset
302 default:
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diff changeset
303 _value._size = _value._val;
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304 _value._multiplier = ' ';
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305 //default case should be to break with no error, since user
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306 //can write size in bytes, or might have a delimiter and next arg
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diff changeset
307 break;
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diff changeset
308 }
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diff changeset
309 } else if (res == 1) {
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diff changeset
310 _value._size = _value._val;
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diff changeset
311 } else {
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diff changeset
312 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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diff changeset
313 "Parsing error memory size value: invalid value");
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fparain
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diff changeset
314 }
f1cb6f9cfe21 7145243: Need additional specializations for argument parsing framework
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diff changeset
315 }
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diff changeset
316
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diff changeset
317 template <> void DCmdArgument<MemorySizeArgument>::init_value(TRAPS) {
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318 if (has_default()) {
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319 this->parse_value(_default_string, strlen(_default_string), THREAD);
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320 if (HAS_PENDING_EXCEPTION) {
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321 fatal("Default string must be parsable");
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322 }
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323 } else {
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324 _value._size = 0;
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325 _value._val = 0;
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326 _value._multiplier = ' ';
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327 }
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328 }
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329
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330 template <> void DCmdArgument<MemorySizeArgument>::destroy_value() { }