0
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1 /*
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2 * Copyright 1997-2007 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/_debug.cpp.incl"
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27
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28 #ifndef ASSERT
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29 # ifdef _DEBUG
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30 // NOTE: don't turn the lines below into a comment -- if you're getting
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31 // a compile error here, change the settings to define ASSERT
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32 ASSERT should be defined when _DEBUG is defined. It is not intended to be used for debugging
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33 functions that do not slow down the system too much and thus can be left in optimized code.
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34 On the other hand, the code should not be included in a production version.
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35 # endif // _DEBUG
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36 #endif // ASSERT
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37
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38
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39 #ifdef _DEBUG
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40 # ifndef ASSERT
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41 configuration error: ASSERT must be defined in debug version
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42 # endif // ASSERT
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43 #endif // _DEBUG
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44
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45
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46 #ifdef PRODUCT
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47 # if -defined _DEBUG || -defined ASSERT
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48 configuration error: ASSERT et al. must not be defined in PRODUCT version
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49 # endif
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50 #endif // PRODUCT
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51
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52
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53 void warning(const char* format, ...) {
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54 // In case error happens before init or during shutdown
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55 if (tty == NULL) ostream_init();
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56
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57 tty->print("%s warning: ", VM_Version::vm_name());
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58 va_list ap;
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59 va_start(ap, format);
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60 tty->vprint_cr(format, ap);
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61 va_end(ap);
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62 if (BreakAtWarning) BREAKPOINT;
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63 }
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64
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65 #ifndef PRODUCT
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66
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67 #define is_token_break(ch) (isspace(ch) || (ch) == ',')
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68
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69 static const char* last_file_name = NULL;
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70 static int last_line_no = -1;
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71
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72 // assert/guarantee/... may happen very early during VM initialization.
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73 // Don't rely on anything that is initialized by Threads::create_vm(). For
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74 // example, don't use tty.
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75 bool assert_is_suppressed(const char* file_name, int line_no) {
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76 // The following 1-element cache requires that passed-in
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77 // file names are always only constant literals.
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78 if (file_name == last_file_name && line_no == last_line_no) return true;
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79
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80 int file_name_len = (int)strlen(file_name);
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81 char separator = os::file_separator()[0];
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82 const char* base_name = strrchr(file_name, separator);
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83 if (base_name == NULL)
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84 base_name = file_name;
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85
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86 // scan the SuppressErrorAt option
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87 const char* cp = SuppressErrorAt;
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88 for (;;) {
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89 const char* sfile;
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90 int sfile_len;
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91 int sline;
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92 bool noisy;
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93 while ((*cp) != '\0' && is_token_break(*cp)) cp++;
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94 if ((*cp) == '\0') break;
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95 sfile = cp;
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96 while ((*cp) != '\0' && !is_token_break(*cp) && (*cp) != ':') cp++;
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97 sfile_len = cp - sfile;
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98 if ((*cp) == ':') cp++;
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99 sline = 0;
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100 while ((*cp) != '\0' && isdigit(*cp)) {
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101 sline *= 10;
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102 sline += (*cp) - '0';
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103 cp++;
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104 }
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105 // "file:line!" means the assert suppression is not silent
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106 noisy = ((*cp) == '!');
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107 while ((*cp) != '\0' && !is_token_break(*cp)) cp++;
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108 // match the line
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109 if (sline != 0) {
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110 if (sline != line_no) continue;
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111 }
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112 // match the file
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113 if (sfile_len > 0) {
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114 const char* look = file_name;
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115 const char* look_max = file_name + file_name_len - sfile_len;
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116 const char* foundp;
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117 bool match = false;
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118 while (!match
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119 && (foundp = strchr(look, sfile[0])) != NULL
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120 && foundp <= look_max) {
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121 match = true;
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122 for (int i = 1; i < sfile_len; i++) {
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123 if (sfile[i] != foundp[i]) {
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124 match = false;
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125 break;
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126 }
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127 }
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128 look = foundp + 1;
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129 }
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130 if (!match) continue;
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131 }
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132 // got a match!
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133 if (noisy) {
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134 fdStream out(defaultStream::output_fd());
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135 out.print_raw("[error suppressed at ");
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136 out.print_raw(base_name);
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137 char buf[16];
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138 jio_snprintf(buf, sizeof(buf), ":%d]", line_no);
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139 out.print_raw_cr(buf);
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140 } else {
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141 // update 1-element cache for fast silent matches
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142 last_file_name = file_name;
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143 last_line_no = line_no;
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144 }
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145 return true;
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146 }
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147
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148 if (!is_error_reported()) {
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149 // print a friendly hint:
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150 fdStream out(defaultStream::output_fd());
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151 out.print_raw_cr("# To suppress the following error report, specify this argument");
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152 out.print_raw ("# after -XX: or in .hotspotrc: SuppressErrorAt=");
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153 out.print_raw (base_name);
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154 char buf[16];
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155 jio_snprintf(buf, sizeof(buf), ":%d", line_no);
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156 out.print_raw_cr(buf);
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157 }
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158 return false;
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159 }
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160
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161 #undef is_token_break
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162
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163 #else
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164
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165 // Place-holder for non-existent suppression check:
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166 #define assert_is_suppressed(file_name, line_no) (false)
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167
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168 #endif //PRODUCT
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169
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170 void report_assertion_failure(const char* file_name, int line_no, const char* message) {
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171 if (Debugging || assert_is_suppressed(file_name, line_no)) return;
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172 VMError err(ThreadLocalStorage::get_thread_slow(), message, file_name, line_no);
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173 err.report_and_die();
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174 }
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175
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176 void report_fatal(const char* file_name, int line_no, const char* message) {
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177 if (Debugging || assert_is_suppressed(file_name, line_no)) return;
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178 VMError err(ThreadLocalStorage::get_thread_slow(), message, file_name, line_no);
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179 err.report_and_die();
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180 }
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181
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182 void report_fatal_vararg(const char* file_name, int line_no, const char* format, ...) {
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183 char buffer[256];
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184 va_list ap;
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185 va_start(ap, format);
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186 jio_vsnprintf(buffer, sizeof(buffer), format, ap);
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187 va_end(ap);
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188 report_fatal(file_name, line_no, buffer);
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189 }
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190
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191
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192 // Used by report_vm_out_of_memory to detect recursion.
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193 static jint _exiting_out_of_mem = 0;
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194
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195 // Just passing the flow to VMError to handle error
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196 void report_vm_out_of_memory(const char* file_name, int line_no, size_t size, const char* message) {
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197 if (Debugging || assert_is_suppressed(file_name, line_no)) return;
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198
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199 // We try to gather additional information for the first out of memory
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200 // error only; gathering additional data might cause an allocation and a
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201 // recursive out_of_memory condition.
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202
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203 const jint exiting = 1;
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204 // If we succeed in changing the value, we're the first one in.
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205 bool first_time_here = Atomic::xchg(exiting, &_exiting_out_of_mem) != exiting;
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206
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207 if (first_time_here) {
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208 Thread* thread = ThreadLocalStorage::get_thread_slow();
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209 VMError(thread, size, message, file_name, line_no).report_and_die();
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210 }
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211 vm_abort();
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212 }
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213
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214 void report_vm_out_of_memory_vararg(const char* file_name, int line_no, size_t size, const char* format, ...) {
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215 char buffer[256];
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216 va_list ap;
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217 va_start(ap, format);
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218 jio_vsnprintf(buffer, sizeof(buffer), format, ap);
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219 va_end(ap);
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220 report_vm_out_of_memory(file_name, line_no, size, buffer);
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221 }
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222
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223 void report_should_not_call(const char* file_name, int line_no) {
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224 if (Debugging || assert_is_suppressed(file_name, line_no)) return;
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225 VMError err(ThreadLocalStorage::get_thread_slow(), "ShouldNotCall()", file_name, line_no);
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226 err.report_and_die();
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227 }
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228
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229
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230 void report_should_not_reach_here(const char* file_name, int line_no) {
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231 if (Debugging || assert_is_suppressed(file_name, line_no)) return;
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232 VMError err(ThreadLocalStorage::get_thread_slow(), "ShouldNotReachHere()", file_name, line_no);
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233 err.report_and_die();
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234 }
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235
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236
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237 void report_unimplemented(const char* file_name, int line_no) {
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238 if (Debugging || assert_is_suppressed(file_name, line_no)) return;
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239 VMError err(ThreadLocalStorage::get_thread_slow(), "Unimplemented()", file_name, line_no);
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240 err.report_and_die();
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241 }
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242
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243
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244 void report_untested(const char* file_name, int line_no, const char* msg) {
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245 #ifndef PRODUCT
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246 warning("Untested: %s in %s: %d\n", msg, file_name, line_no);
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247 #endif // PRODUCT
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248 }
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249
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250 void report_java_out_of_memory(const char* message) {
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251 static jint out_of_memory_reported = 0;
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252
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253 // A number of threads may attempt to report OutOfMemoryError at around the
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254 // same time. To avoid dumping the heap or executing the data collection
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255 // commands multiple times we just do it once when the first threads reports
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256 // the error.
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257 if (Atomic::cmpxchg(1, &out_of_memory_reported, 0) == 0) {
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258 // create heap dump before OnOutOfMemoryError commands are executed
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259 if (HeapDumpOnOutOfMemoryError) {
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260 tty->print_cr("java.lang.OutOfMemoryError: %s", message);
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261 HeapDumper::dump_heap();
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262 }
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263
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264 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
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265 VMError err(message);
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266 err.report_java_out_of_memory();
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267 }
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268 }
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269 }
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270
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271
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272 extern "C" void ps();
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273
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274 static bool error_reported = false;
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275
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276 // call this when the VM is dying--it might loosen some asserts
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277 void set_error_reported() {
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278 error_reported = true;
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279 }
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280
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281 bool is_error_reported() {
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282 return error_reported;
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283 }
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284
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285 // ------ helper functions for debugging go here ------------
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286
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287 #ifndef PRODUCT
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288 // All debug entries should be wrapped with a stack allocated
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289 // Command object. It makes sure a resource mark is set and
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290 // flushes the logfile to prevent file sharing problems.
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291
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292 class Command : public StackObj {
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293 private:
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294 ResourceMark rm;
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295 ResetNoHandleMark rnhm;
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296 HandleMark hm;
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297 bool debug_save;
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298 public:
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299 static int level;
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300 Command(const char* str) {
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301 debug_save = Debugging;
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302 Debugging = true;
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303 if (level++ > 0) return;
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304 tty->cr();
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305 tty->print_cr("\"Executing %s\"", str);
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306 }
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307
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308 ~Command() { tty->flush(); Debugging = debug_save; level--; }
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309 };
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310
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311 int Command::level = 0;
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312
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313 extern "C" void blob(CodeBlob* cb) {
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314 Command c("blob");
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315 cb->print();
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316 }
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317
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318
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319 extern "C" void dump_vtable(address p) {
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320 Command c("dump_vtable");
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321 klassOop k = (klassOop)p;
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322 instanceKlass::cast(k)->vtable()->print();
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323 }
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324
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325
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326 extern "C" void nm(intptr_t p) {
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327 // Actually we look through all CodeBlobs (the nm name has been kept for backwards compatability)
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328 Command c("nm");
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329 CodeBlob* cb = CodeCache::find_blob((address)p);
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330 if (cb == NULL) {
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331 tty->print_cr("NULL");
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332 } else {
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333 cb->print();
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334 }
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335 }
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336
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337
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338 extern "C" void disnm(intptr_t p) {
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339 Command c("disnm");
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340 CodeBlob* cb = CodeCache::find_blob((address) p);
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341 cb->print();
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342 Disassembler::decode(cb);
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343 }
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344
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345
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346 extern "C" void printnm(intptr_t p) {
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347 char buffer[256];
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348 sprintf(buffer, "printnm: " INTPTR_FORMAT, p);
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349 Command c(buffer);
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350 CodeBlob* cb = CodeCache::find_blob((address) p);
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351 if (cb->is_nmethod()) {
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352 nmethod* nm = (nmethod*)cb;
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353 nm->print_nmethod(true);
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354 }
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355 }
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356
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357
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358 extern "C" void universe() {
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359 Command c("universe");
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360 Universe::print();
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361 }
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362
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363
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364 extern "C" void verify() {
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365 // try to run a verify on the entire system
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366 // note: this may not be safe if we're not at a safepoint; for debugging,
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367 // this manipulates the safepoint settings to avoid assertion failures
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368 Command c("universe verify");
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369 bool safe = SafepointSynchronize::is_at_safepoint();
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370 if (!safe) {
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371 tty->print_cr("warning: not at safepoint -- verify may fail");
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372 SafepointSynchronize::set_is_at_safepoint();
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373 }
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374 // Ensure Eden top is correct before verification
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375 Universe::heap()->prepare_for_verify();
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376 Universe::verify(true);
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377 if (!safe) SafepointSynchronize::set_is_not_at_safepoint();
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378 }
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379
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380
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381 extern "C" void pp(void* p) {
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382 Command c("pp");
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383 FlagSetting fl(PrintVMMessages, true);
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384 if (Universe::heap()->is_in(p)) {
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385 oop obj = oop(p);
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386 obj->print();
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387 } else {
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388 tty->print("%#p", p);
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389 }
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390 }
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391
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392
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393 // pv: print vm-printable object
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394 extern "C" void pa(intptr_t p) { ((AllocatedObj*) p)->print(); }
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395 extern "C" void findpc(intptr_t x);
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396
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397 extern "C" void ps() { // print stack
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398 Command c("ps");
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399
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400
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401 // Prints the stack of the current Java thread
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402 JavaThread* p = JavaThread::active();
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403 tty->print(" for thread: ");
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404 p->print();
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405 tty->cr();
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406
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407 if (p->has_last_Java_frame()) {
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408 // If the last_Java_fp is set we are in C land and
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409 // can call the standard stack_trace function.
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410 p->trace_stack();
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411 } else {
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412 frame f = os::current_frame();
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413 RegisterMap reg_map(p);
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414 f = f.sender(®_map);
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415 tty->print("(guessing starting frame id=%#p based on current fp)\n", f.id());
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416 p->trace_stack_from(vframe::new_vframe(&f, ®_map, p));
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417 pd_ps(f);
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418 }
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419
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420 }
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421
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422
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423 extern "C" void psf() { // print stack frames
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424 {
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425 Command c("psf");
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426 JavaThread* p = JavaThread::active();
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427 tty->print(" for thread: ");
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428 p->print();
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429 tty->cr();
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430 if (p->has_last_Java_frame()) {
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431 p->trace_frames();
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432 }
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433 }
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434 }
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435
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436
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437 extern "C" void threads() {
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438 Command c("threads");
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439 Threads::print(false, true);
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440 }
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441
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442
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443 extern "C" void psd() {
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444 Command c("psd");
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445 SystemDictionary::print();
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446 }
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447
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448
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449 extern "C" void safepoints() {
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450 Command c("safepoints");
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451 SafepointSynchronize::print_state();
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452 }
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453
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454
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455 extern "C" void pss() { // print all stacks
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456 Command c("pss");
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457 Threads::print(true, true);
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458 }
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459
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460
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461 extern "C" void debug() { // to set things up for compiler debugging
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462 Command c("debug");
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463 WizardMode = true;
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464 PrintVMMessages = PrintCompilation = true;
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465 PrintInlining = PrintAssembly = true;
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466 tty->flush();
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467 }
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468
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469
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470 extern "C" void ndebug() { // undo debug()
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471 Command c("ndebug");
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472 PrintCompilation = false;
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473 PrintInlining = PrintAssembly = false;
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474 tty->flush();
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475 }
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476
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477
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478 extern "C" void flush() {
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479 Command c("flush");
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480 tty->flush();
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481 }
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482
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483
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484 extern "C" void events() {
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485 Command c("events");
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486 Events::print_last(tty, 50);
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487 }
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488
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489
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490 extern "C" void nevents(int n) {
|
|
491 Command c("events");
|
|
492 Events::print_last(tty, n);
|
|
493 }
|
|
494
|
|
495
|
|
496 // Given a heap address that was valid before the most recent GC, if
|
|
497 // the oop that used to contain it is still live, prints the new
|
|
498 // location of the oop and the address. Useful for tracking down
|
|
499 // certain kinds of naked oop and oop map bugs.
|
|
500 extern "C" void pnl(intptr_t old_heap_addr) {
|
|
501 // Print New Location of old heap address
|
|
502 Command c("pnl");
|
|
503 #ifndef VALIDATE_MARK_SWEEP
|
|
504 tty->print_cr("Requires build with VALIDATE_MARK_SWEEP defined (debug build) and RecordMarkSweepCompaction enabled");
|
|
505 #else
|
|
506 MarkSweep::print_new_location_of_heap_address((HeapWord*) old_heap_addr);
|
|
507 #endif
|
|
508 }
|
|
509
|
|
510
|
|
511 extern "C" methodOop findm(intptr_t pc) {
|
|
512 Command c("findm");
|
|
513 nmethod* nm = CodeCache::find_nmethod((address)pc);
|
|
514 return (nm == NULL) ? (methodOop)NULL : nm->method();
|
|
515 }
|
|
516
|
|
517
|
|
518 extern "C" nmethod* findnm(intptr_t addr) {
|
|
519 Command c("findnm");
|
|
520 return CodeCache::find_nmethod((address)addr);
|
|
521 }
|
|
522
|
|
523 static address same_page(address x, address y) {
|
|
524 intptr_t page_bits = -os::vm_page_size();
|
|
525 if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits)) {
|
|
526 return x;
|
|
527 } else if (x > y) {
|
|
528 return (address)(intptr_t(y) | ~page_bits) + 1;
|
|
529 } else {
|
|
530 return (address)(intptr_t(y) & page_bits);
|
|
531 }
|
|
532 }
|
|
533
|
|
534
|
|
535 static void find(intptr_t x, bool print_pc) {
|
|
536 address addr = (address)x;
|
|
537
|
|
538 CodeBlob* b = CodeCache::find_blob_unsafe(addr);
|
|
539 if (b != NULL) {
|
|
540 if (b->is_buffer_blob()) {
|
|
541 // the interpreter is generated into a buffer blob
|
|
542 InterpreterCodelet* i = Interpreter::codelet_containing(addr);
|
|
543 if (i != NULL) {
|
|
544 i->print();
|
|
545 return;
|
|
546 }
|
|
547 if (Interpreter::contains(addr)) {
|
|
548 tty->print_cr(INTPTR_FORMAT " is pointing into interpreter code (not bytecode specific)", addr);
|
|
549 return;
|
|
550 }
|
|
551 //
|
|
552 if (AdapterHandlerLibrary::contains(b)) {
|
|
553 AdapterHandlerLibrary::print_handler(b);
|
|
554 }
|
|
555 // the stubroutines are generated into a buffer blob
|
|
556 StubCodeDesc* d = StubCodeDesc::desc_for(addr);
|
|
557 if (d != NULL) {
|
|
558 d->print();
|
|
559 if (print_pc) tty->cr();
|
|
560 return;
|
|
561 }
|
|
562 if (StubRoutines::contains(addr)) {
|
|
563 tty->print_cr(INTPTR_FORMAT " is pointing to an (unnamed) stub routine", addr);
|
|
564 return;
|
|
565 }
|
|
566 // the InlineCacheBuffer is using stubs generated into a buffer blob
|
|
567 if (InlineCacheBuffer::contains(addr)) {
|
|
568 tty->print_cr(INTPTR_FORMAT "is pointing into InlineCacheBuffer", addr);
|
|
569 return;
|
|
570 }
|
|
571 VtableStub* v = VtableStubs::stub_containing(addr);
|
|
572 if (v != NULL) {
|
|
573 v->print();
|
|
574 return;
|
|
575 }
|
|
576 }
|
|
577 if (print_pc && b->is_nmethod()) {
|
|
578 ResourceMark rm;
|
|
579 tty->print("%#p: Compiled ", addr);
|
|
580 ((nmethod*)b)->method()->print_value_on(tty);
|
|
581 tty->print(" = (CodeBlob*)" INTPTR_FORMAT, b);
|
|
582 tty->cr();
|
|
583 return;
|
|
584 }
|
|
585 if ( b->is_nmethod()) {
|
|
586 if (b->is_zombie()) {
|
|
587 tty->print_cr(INTPTR_FORMAT " is zombie nmethod", b);
|
|
588 } else if (b->is_not_entrant()) {
|
|
589 tty->print_cr(INTPTR_FORMAT " is non-entrant nmethod", b);
|
|
590 }
|
|
591 }
|
|
592 b->print();
|
|
593 return;
|
|
594 }
|
|
595
|
|
596 if (Universe::heap()->is_in_reserved(addr)) {
|
|
597 HeapWord* p = Universe::heap()->block_start(addr);
|
|
598 bool print = false;
|
|
599 // If we couldn't find it it just may mean that heap wasn't parseable
|
|
600 // See if we were just given an oop directly
|
|
601 if (p != NULL && Universe::heap()->block_is_obj(p)) {
|
|
602 print = true;
|
|
603 } else if (p == NULL && ((oopDesc*)addr)->is_oop()) {
|
|
604 p = (HeapWord*) addr;
|
|
605 print = true;
|
|
606 }
|
|
607 if (print) {
|
|
608 oop(p)->print();
|
|
609 if (p != (HeapWord*)x && oop(p)->is_constMethod() &&
|
|
610 constMethodOop(p)->contains(addr)) {
|
|
611 Thread *thread = Thread::current();
|
|
612 HandleMark hm(thread);
|
|
613 methodHandle mh (thread, constMethodOop(p)->method());
|
|
614 if (!mh->is_native()) {
|
|
615 tty->print_cr("bci_from(%p) = %d; print_codes():",
|
|
616 addr, mh->bci_from(address(x)));
|
|
617 mh->print_codes();
|
|
618 }
|
|
619 }
|
|
620 return;
|
|
621 }
|
|
622 }
|
|
623 if (JNIHandles::is_global_handle((jobject) addr)) {
|
|
624 tty->print_cr(INTPTR_FORMAT "is a global jni handle", addr);
|
|
625 return;
|
|
626 }
|
|
627 if (JNIHandles::is_weak_global_handle((jobject) addr)) {
|
|
628 tty->print_cr(INTPTR_FORMAT "is a weak global jni handle", addr);
|
|
629 return;
|
|
630 }
|
|
631 if (JNIHandleBlock::any_contains((jobject) addr)) {
|
|
632 tty->print_cr(INTPTR_FORMAT "is a local jni handle", addr);
|
|
633 return;
|
|
634 }
|
|
635
|
|
636 for(JavaThread *thread = Threads::first(); thread; thread = thread->next()) {
|
|
637 // Check for priviledge stack
|
|
638 if (thread->privileged_stack_top() != NULL && thread->privileged_stack_top()->contains(addr)) {
|
|
639 tty->print_cr(INTPTR_FORMAT "is pointing into the priviledge stack for thread: " INTPTR_FORMAT, addr, thread);
|
|
640 return;
|
|
641 }
|
|
642 // If the addr is a java thread print information about that.
|
|
643 if (addr == (address)thread) {
|
|
644 thread->print();
|
|
645 return;
|
|
646 }
|
|
647 }
|
|
648
|
|
649 // Try an OS specific find
|
|
650 if (os::find(addr)) {
|
|
651 return;
|
|
652 }
|
|
653
|
|
654 if (print_pc) {
|
|
655 tty->print_cr(INTPTR_FORMAT ": probably in C++ code; check debugger", addr);
|
|
656 Disassembler::decode(same_page(addr-40,addr),same_page(addr+40,addr));
|
|
657 return;
|
|
658 }
|
|
659
|
|
660 tty->print_cr(INTPTR_FORMAT "is pointing to unknown location", addr);
|
|
661 }
|
|
662
|
|
663
|
|
664 class LookForRefInGenClosure : public OopsInGenClosure {
|
|
665 public:
|
|
666 oop target;
|
|
667 void do_oop(oop* o) {
|
|
668 if (o != NULL && *o == target) {
|
|
669 tty->print_cr("0x%08x", o);
|
|
670 }
|
|
671 }
|
|
672 };
|
|
673
|
|
674
|
|
675 class LookForRefInObjectClosure : public ObjectClosure {
|
|
676 private:
|
|
677 LookForRefInGenClosure look_in_object;
|
|
678 public:
|
|
679 LookForRefInObjectClosure(oop target) { look_in_object.target = target; }
|
|
680 void do_object(oop obj) {
|
|
681 obj->oop_iterate(&look_in_object);
|
|
682 }
|
|
683 };
|
|
684
|
|
685
|
|
686 static void findref(intptr_t x) {
|
|
687 GenCollectedHeap *gch = GenCollectedHeap::heap();
|
|
688 LookForRefInGenClosure lookFor;
|
|
689 lookFor.target = (oop) x;
|
|
690 LookForRefInObjectClosure look_in_object((oop) x);
|
|
691
|
|
692 tty->print_cr("Searching heap:");
|
|
693 gch->object_iterate(&look_in_object);
|
|
694
|
|
695 tty->print_cr("Searching strong roots:");
|
|
696 Universe::oops_do(&lookFor, false);
|
|
697 JNIHandles::oops_do(&lookFor); // Global (strong) JNI handles
|
|
698 Threads::oops_do(&lookFor);
|
|
699 ObjectSynchronizer::oops_do(&lookFor);
|
|
700 //FlatProfiler::oops_do(&lookFor);
|
|
701 SystemDictionary::oops_do(&lookFor);
|
|
702
|
|
703 tty->print_cr("Done.");
|
|
704 }
|
|
705
|
|
706 class FindClassObjectClosure: public ObjectClosure {
|
|
707 private:
|
|
708 const char* _target;
|
|
709 public:
|
|
710 FindClassObjectClosure(const char name[]) { _target = name; }
|
|
711
|
|
712 virtual void do_object(oop obj) {
|
|
713 if (obj->is_klass()) {
|
|
714 Klass* k = klassOop(obj)->klass_part();
|
|
715 if (k->name() != NULL) {
|
|
716 ResourceMark rm;
|
|
717 const char* ext = k->external_name();
|
|
718 if ( strcmp(_target, ext) == 0 ) {
|
|
719 tty->print_cr("Found " INTPTR_FORMAT, obj);
|
|
720 obj->print();
|
|
721 }
|
|
722 }
|
|
723 }
|
|
724 }
|
|
725 };
|
|
726
|
|
727 //
|
|
728 extern "C" void findclass(const char name[]) {
|
|
729 Command c("findclass");
|
|
730 if (name != NULL) {
|
|
731 tty->print_cr("Finding class %s -> ", name);
|
|
732 FindClassObjectClosure srch(name);
|
|
733 Universe::heap()->permanent_object_iterate(&srch);
|
|
734 }
|
|
735 }
|
|
736
|
|
737 // Another interface that isn't ambiguous in dbx.
|
|
738 // Can we someday rename the other find to hsfind?
|
|
739 extern "C" void hsfind(intptr_t x) {
|
|
740 Command c("hsfind");
|
|
741 find(x, false);
|
|
742 }
|
|
743
|
|
744
|
|
745 extern "C" void hsfindref(intptr_t x) {
|
|
746 Command c("hsfindref");
|
|
747 findref(x);
|
|
748 }
|
|
749
|
|
750 extern "C" void find(intptr_t x) {
|
|
751 Command c("find");
|
|
752 find(x, false);
|
|
753 }
|
|
754
|
|
755
|
|
756 extern "C" void findpc(intptr_t x) {
|
|
757 Command c("findpc");
|
|
758 find(x, true);
|
|
759 }
|
|
760
|
|
761
|
|
762 // int versions of all methods to avoid having to type type casts in the debugger
|
|
763
|
|
764 void pp(intptr_t p) { pp((void*)p); }
|
|
765 void pp(oop p) { pp((void*)p); }
|
|
766
|
|
767 void help() {
|
|
768 Command c("help");
|
|
769 tty->print_cr("basic");
|
|
770 tty->print_cr(" pp(void* p) - try to make sense of p");
|
|
771 tty->print_cr(" pv(intptr_t p)- ((PrintableResourceObj*) p)->print()");
|
|
772 tty->print_cr(" ps() - print current thread stack");
|
|
773 tty->print_cr(" pss() - print all thread stacks");
|
|
774 tty->print_cr(" pm(int pc) - print methodOop given compiled PC");
|
|
775 tty->print_cr(" findm(intptr_t pc) - finds methodOop");
|
|
776 tty->print_cr(" find(intptr_t x) - finds & prints nmethod/stub/bytecode/oop based on pointer into it");
|
|
777
|
|
778 tty->print_cr("misc.");
|
|
779 tty->print_cr(" flush() - flushes the log file");
|
|
780 tty->print_cr(" events() - dump last 50 events");
|
|
781
|
|
782
|
|
783 tty->print_cr("compiler debugging");
|
|
784 tty->print_cr(" debug() - to set things up for compiler debugging");
|
|
785 tty->print_cr(" ndebug() - undo debug");
|
|
786 }
|
|
787
|
|
788 #if 0
|
|
789
|
|
790 // BobV's command parser for debugging on windows when nothing else works.
|
|
791
|
|
792 enum CommandID {
|
|
793 CMDID_HELP,
|
|
794 CMDID_QUIT,
|
|
795 CMDID_HSFIND,
|
|
796 CMDID_PSS,
|
|
797 CMDID_PS,
|
|
798 CMDID_PSF,
|
|
799 CMDID_FINDM,
|
|
800 CMDID_FINDNM,
|
|
801 CMDID_PP,
|
|
802 CMDID_BPT,
|
|
803 CMDID_EXIT,
|
|
804 CMDID_VERIFY,
|
|
805 CMDID_THREADS,
|
|
806 CMDID_ILLEGAL = 99
|
|
807 };
|
|
808
|
|
809 struct CommandParser {
|
|
810 char *name;
|
|
811 CommandID code;
|
|
812 char *description;
|
|
813 };
|
|
814
|
|
815 struct CommandParser CommandList[] = {
|
|
816 (char *)"help", CMDID_HELP, " Dump this list",
|
|
817 (char *)"quit", CMDID_QUIT, " Return from this routine",
|
|
818 (char *)"hsfind", CMDID_HSFIND, "Perform an hsfind on an address",
|
|
819 (char *)"ps", CMDID_PS, " Print Current Thread Stack Trace",
|
|
820 (char *)"pss", CMDID_PSS, " Print All Thread Stack Trace",
|
|
821 (char *)"psf", CMDID_PSF, " Print All Stack Frames",
|
|
822 (char *)"findm", CMDID_FINDM, " Find a methodOop from a PC",
|
|
823 (char *)"findnm", CMDID_FINDNM, "Find an nmethod from a PC",
|
|
824 (char *)"pp", CMDID_PP, " Find out something about a pointer",
|
|
825 (char *)"break", CMDID_BPT, " Execute a breakpoint",
|
|
826 (char *)"exitvm", CMDID_EXIT, "Exit the VM",
|
|
827 (char *)"verify", CMDID_VERIFY, "Perform a Heap Verify",
|
|
828 (char *)"thread", CMDID_THREADS, "Dump Info on all Threads",
|
|
829 (char *)0, CMDID_ILLEGAL
|
|
830 };
|
|
831
|
|
832
|
|
833 // get_debug_command()
|
|
834 //
|
|
835 // Read a command from standard input.
|
|
836 // This is useful when you have a debugger
|
|
837 // which doesn't support calling into functions.
|
|
838 //
|
|
839 void get_debug_command()
|
|
840 {
|
|
841 ssize_t count;
|
|
842 int i,j;
|
|
843 bool gotcommand;
|
|
844 intptr_t addr;
|
|
845 char buffer[256];
|
|
846 nmethod *nm;
|
|
847 methodOop m;
|
|
848
|
|
849 tty->print_cr("You have entered the diagnostic command interpreter");
|
|
850 tty->print("The supported commands are:\n");
|
|
851 for ( i=0; ; i++ ) {
|
|
852 if ( CommandList[i].code == CMDID_ILLEGAL )
|
|
853 break;
|
|
854 tty->print_cr(" %s \n", CommandList[i].name );
|
|
855 }
|
|
856
|
|
857 while ( 1 ) {
|
|
858 gotcommand = false;
|
|
859 tty->print("Please enter a command: ");
|
|
860 count = scanf("%s", buffer) ;
|
|
861 if ( count >=0 ) {
|
|
862 for ( i=0; ; i++ ) {
|
|
863 if ( CommandList[i].code == CMDID_ILLEGAL ) {
|
|
864 if (!gotcommand) tty->print("Invalid command, please try again\n");
|
|
865 break;
|
|
866 }
|
|
867 if ( strcmp(buffer, CommandList[i].name) == 0 ) {
|
|
868 gotcommand = true;
|
|
869 switch ( CommandList[i].code ) {
|
|
870 case CMDID_PS:
|
|
871 ps();
|
|
872 break;
|
|
873 case CMDID_PSS:
|
|
874 pss();
|
|
875 break;
|
|
876 case CMDID_PSF:
|
|
877 psf();
|
|
878 break;
|
|
879 case CMDID_FINDM:
|
|
880 tty->print("Please enter the hex addr to pass to findm: ");
|
|
881 scanf("%I64X", &addr);
|
|
882 m = (methodOop)findm(addr);
|
|
883 tty->print("findm(0x%I64X) returned 0x%I64X\n", addr, m);
|
|
884 break;
|
|
885 case CMDID_FINDNM:
|
|
886 tty->print("Please enter the hex addr to pass to findnm: ");
|
|
887 scanf("%I64X", &addr);
|
|
888 nm = (nmethod*)findnm(addr);
|
|
889 tty->print("findnm(0x%I64X) returned 0x%I64X\n", addr, nm);
|
|
890 break;
|
|
891 case CMDID_PP:
|
|
892 tty->print("Please enter the hex addr to pass to pp: ");
|
|
893 scanf("%I64X", &addr);
|
|
894 pp((void*)addr);
|
|
895 break;
|
|
896 case CMDID_EXIT:
|
|
897 exit(0);
|
|
898 case CMDID_HELP:
|
|
899 tty->print("Here are the supported commands: ");
|
|
900 for ( j=0; ; j++ ) {
|
|
901 if ( CommandList[j].code == CMDID_ILLEGAL )
|
|
902 break;
|
|
903 tty->print_cr(" %s -- %s\n", CommandList[j].name,
|
|
904 CommandList[j].description );
|
|
905 }
|
|
906 break;
|
|
907 case CMDID_QUIT:
|
|
908 return;
|
|
909 break;
|
|
910 case CMDID_BPT:
|
|
911 BREAKPOINT;
|
|
912 break;
|
|
913 case CMDID_VERIFY:
|
|
914 verify();;
|
|
915 break;
|
|
916 case CMDID_THREADS:
|
|
917 threads();;
|
|
918 break;
|
|
919 case CMDID_HSFIND:
|
|
920 tty->print("Please enter the hex addr to pass to hsfind: ");
|
|
921 scanf("%I64X", &addr);
|
|
922 tty->print("Calling hsfind(0x%I64X)\n", addr);
|
|
923 hsfind(addr);
|
|
924 break;
|
|
925 default:
|
|
926 case CMDID_ILLEGAL:
|
|
927 break;
|
|
928 }
|
|
929 }
|
|
930 }
|
|
931 }
|
|
932 }
|
|
933 }
|
|
934 #endif
|
|
935
|
|
936 #endif // PRODUCT
|