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annotate src/share/vm/utilities/debug.hpp @ 2177:3582bf76420e

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6990754: Use native memory and reference counting to implement SymbolTable Summary: move symbols from permgen into C heap and reference count them Reviewed-by: never, acorn, jmasa, stefank
author coleenp
date Thu, 27 Jan 2011 16:11:27 -0800
parents 0fa27f37d4d4
children 1216415d8e35
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1 /*
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2 * Copyright (c) 1997, 2010, 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 #ifndef SHARE_VM_UTILITIES_DEBUG_HPP
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26 #define SHARE_VM_UTILITIES_DEBUG_HPP
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27
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28 #include "utilities/globalDefinitions.hpp"
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29
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30 #include <stdarg.h>
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31
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32 // Simple class to format the ctor arguments into a fixed-sized buffer.
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33 template <size_t bufsz = 256>
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34 class FormatBuffer {
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35 public:
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36 inline FormatBuffer(const char * format, ...);
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37 inline void append(const char* format, ...);
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38 operator const char *() const { return _buf; }
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39
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40 private:
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41 FormatBuffer(const FormatBuffer &); // prevent copies
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42
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43 private:
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44 char _buf[bufsz];
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45 };
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46
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47 template <size_t bufsz>
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48 FormatBuffer<bufsz>::FormatBuffer(const char * format, ...) {
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49 va_list argp;
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50 va_start(argp, format);
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51 vsnprintf(_buf, bufsz, format, argp);
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52 va_end(argp);
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53 }
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54
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55 template <size_t bufsz>
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56 void FormatBuffer<bufsz>::append(const char* format, ...) {
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57 // Given that the constructor does a vsnprintf we can assume that
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58 // _buf is already initialized.
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59 size_t len = strlen(_buf);
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60 char* buf_end = _buf + len;
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61
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62 va_list argp;
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63 va_start(argp, format);
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64 vsnprintf(buf_end, bufsz - len, format, argp);
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65 va_end(argp);
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66 }
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67
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68 // Used to format messages for assert(), guarantee(), fatal(), etc.
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69 typedef FormatBuffer<> err_msg;
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70
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71 // assertions
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72 #ifdef ASSERT
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73 #ifndef USE_REPEATED_ASSERTS
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74 #define assert(p, msg) \
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75 do { \
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76 if (!(p)) { \
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77 report_vm_error(__FILE__, __LINE__, "assert(" #p ") failed", msg); \
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78 BREAKPOINT; \
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79 } \
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80 } while (0)
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81 #else // #ifndef USE_REPEATED_ASSERTS
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82 #define assert(p, msg)
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83 do { \
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84 for (int __i = 0; __i < AssertRepeat; __i++) { \
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85 if (!(p)) { \
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86 report_vm_error(__FILE__, __LINE__, "assert(" #p ") failed", msg); \
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87 BREAKPOINT; \
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88 } \
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89 } \
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90 } while (0)
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91 #endif // #ifndef USE_REPEATED_ASSERTS
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92
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93 // This version of assert is for use with checking return status from
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94 // library calls that return actual error values eg. EINVAL,
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95 // ENOMEM etc, rather than returning -1 and setting errno.
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96 // When the status is not what is expected it is very useful to know
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97 // what status was actually returned, so we pass the status variable as
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98 // an extra arg and use strerror to convert it to a meaningful string
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99 // like "Invalid argument", "out of memory" etc
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100 #define assert_status(p, status, msg) \
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101 do { \
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102 if (!(p)) { \
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103 report_vm_error(__FILE__, __LINE__, "assert(" #p ") failed", \
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104 err_msg("error %s(%d) %s", strerror(status), \
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105 status, msg)); \
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106 BREAKPOINT; \
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107 } \
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108 } while (0)
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109
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110 // Do not assert this condition if there's already another error reported.
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111 #define assert_if_no_error(cond,msg) assert((cond) || is_error_reported(), msg)
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112 #else // #ifdef ASSERT
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113 #define assert(p,msg)
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114 #define assert_status(p,status,msg)
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115 #define assert_if_no_error(cond,msg)
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116 #endif // #ifdef ASSERT
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117
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118 // guarantee is like assert except it's always executed -- use it for
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119 // cheap tests that catch errors that would otherwise be hard to find.
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120 // guarantee is also used for Verify options.
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121 #define guarantee(p, msg) \
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122 do { \
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123 if (!(p)) { \
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124 report_vm_error(__FILE__, __LINE__, "guarantee(" #p ") failed", msg); \
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125 BREAKPOINT; \
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126 } \
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127 } while (0)
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128
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129 #define fatal(msg) \
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130 do { \
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131 report_fatal(__FILE__, __LINE__, msg); \
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132 BREAKPOINT; \
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133 } while (0)
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134
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135 // out of memory
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136 #define vm_exit_out_of_memory(size, msg) \
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137 do { \
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138 report_vm_out_of_memory(__FILE__, __LINE__, size, msg); \
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139 BREAKPOINT; \
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140 } while (0)
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141
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142 #define ShouldNotCallThis() \
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143 do { \
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144 report_should_not_call(__FILE__, __LINE__); \
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145 BREAKPOINT; \
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146 } while (0)
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147
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148 #define ShouldNotReachHere() \
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149 do { \
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150 report_should_not_reach_here(__FILE__, __LINE__); \
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151 BREAKPOINT; \
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152 } while (0)
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153
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154 #define Unimplemented() \
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155 do { \
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156 report_unimplemented(__FILE__, __LINE__); \
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157 BREAKPOINT; \
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158 } while (0)
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159
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160 #define Untested(msg) \
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161 do { \
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162 report_untested(__FILE__, __LINE__, msg); \
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163 BREAKPOINT; \
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164 } while (0);
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165
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166 // error reporting helper functions
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167 void report_vm_error(const char* file, int line, const char* error_msg,
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168 const char* detail_msg = NULL);
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169 void report_fatal(const char* file, int line, const char* message);
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170 void report_vm_out_of_memory(const char* file, int line, size_t size,
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171 const char* message);
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172 void report_should_not_call(const char* file, int line);
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173 void report_should_not_reach_here(const char* file, int line);
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174 void report_unimplemented(const char* file, int line);
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175 void report_untested(const char* file, int line, const char* message);
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176
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177 void warning(const char* format, ...);
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178
2177
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179 // out of shared space reporting
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180 enum SharedSpaceType {
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181 SharedPermGen,
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182 SharedReadOnly,
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183 SharedReadWrite,
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184 SharedMiscData
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185 };
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186
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187 void report_out_of_shared_space(SharedSpaceType space_type);
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188
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189 // out of memory reporting
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190 void report_java_out_of_memory(const char* message);
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191
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192 // Support for self-destruct
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193 bool is_error_reported();
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194 void set_error_reported();
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195
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196 /* Test assert(), fatal(), guarantee(), etc. */
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197 NOT_PRODUCT(void test_error_handler(size_t test_num);)
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198
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199 void pd_ps(frame f);
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200 void pd_obfuscate_location(char *buf, size_t buflen);
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201
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202 #endif // SHARE_VM_UTILITIES_DEBUG_HPP