0
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1 /*
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2 * Copyright 2002-2007 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/_xmlstream.cpp.incl"
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27
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28 void xmlStream::initialize(outputStream* out) {
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29 _out = out;
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30 _last_flush = 0;
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31 _markup_state = BODY;
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32 _text_init._outer_xmlStream = this;
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33 _text = &_text_init;
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34
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35 #ifdef ASSERT
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36 _element_depth = 0;
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37 int init_len = 100;
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38 char* init_buf = NEW_C_HEAP_ARRAY(char, init_len);
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39 _element_close_stack_low = init_buf;
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40 _element_close_stack_high = init_buf + init_len;
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41 _element_close_stack_ptr = init_buf + init_len - 1;
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42 _element_close_stack_ptr[0] = '\0';
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43 #endif
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44
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45 // Make sure each log uses the same base for time stamps.
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46 if (is_open()) {
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47 _out->time_stamp().update_to(1);
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48 }
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49 }
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50
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51 #ifdef ASSERT
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52 xmlStream::~xmlStream() {
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53 FREE_C_HEAP_ARRAY(char, _element_close_stack_low);
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54 }
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55 #endif
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56
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57 // Pass the given chars directly to _out.
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58 void xmlStream::write(const char* s, size_t len) {
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59 if (!is_open()) return;
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60
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61 out()->write(s, len);
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62 update_position(s, len);
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63 }
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64
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65
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66 // Pass the given chars directly to _out, except that
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67 // we watch for special "<&>" chars.
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68 // This is suitable for either attribute text or for body text.
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69 // We don't fool with "<![CDATA[" quotes, just single-character entities.
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70 // This makes it easier for dumb tools to parse the output.
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71 void xmlStream::write_text(const char* s, size_t len) {
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72 if (!is_open()) return;
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73
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74 size_t written = 0;
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75 // All normally printed material goes inside XML quotes.
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76 // This leaves the output free to include markup also.
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77 // Scan the string looking for inadvertant "<&>" chars
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78 for (size_t i = 0; i < len; i++) {
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79 char ch = s[i];
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80 // Escape special chars.
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81 const char* esc = NULL;
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82 switch (ch) {
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83 // These are important only in attrs, but we do them always:
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84 case '\'': esc = "'"; break;
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85 case '"': esc = """; break;
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86 case '<': esc = "<"; break;
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87 case '&': esc = "&"; break;
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88 // This is a freebie.
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89 case '>': esc = ">"; break;
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90 }
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91 if (esc != NULL) {
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92 if (written < i) {
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93 out()->write(&s[written], i - written);
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94 written = i;
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95 }
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96 out()->print_raw(esc);
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97 written++;
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98 }
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99 }
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100
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101 // Print the clean remainder. Usually, it is all of s.
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102 if (written < len) {
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103 out()->write(&s[written], len - written);
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104 }
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105 }
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106
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107 // ------------------------------------------------------------------
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108 // Outputs XML text, with special characters quoted.
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109 void xmlStream::text(const char* format, ...) {
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110 va_list ap;
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111 va_start(ap, format);
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112 va_text(format, ap);
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113 va_end(ap);
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114 }
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115
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116 #define BUFLEN 2*K /* max size of output of individual print methods */
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117
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118 // ------------------------------------------------------------------
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119 void xmlStream::va_tag(bool push, const char* format, va_list ap) {
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120 assert_if_no_error(!inside_attrs(), "cannot print tag inside attrs");
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121 char buffer[BUFLEN];
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122 size_t len;
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123 const char* kind = do_vsnprintf(buffer, BUFLEN, format, ap, false, len);
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124 see_tag(kind, push);
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125 print_raw("<");
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126 write(kind, len);
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127 _markup_state = (push ? HEAD : ELEM);
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128 }
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129
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130 #ifdef ASSERT
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131 /// Debugging goo to make sure element tags nest properly.
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132
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133 // ------------------------------------------------------------------
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134 void xmlStream::see_tag(const char* tag, bool push) {
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135 assert_if_no_error(!inside_attrs(), "cannot start new element inside attrs");
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136 if (!push) return;
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137
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138 // tag goes up until either null or space:
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139 const char* tag_end = strchr(tag, ' ');
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140 size_t tag_len = (tag_end == NULL) ? strlen(tag) : tag_end - tag;
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141 assert(tag_len > 0, "tag must not be empty");
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142 // push the tag onto the stack, pulling down the pointer
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143 char* old_ptr = _element_close_stack_ptr;
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144 char* old_low = _element_close_stack_low;
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145 char* push_ptr = old_ptr - (tag_len+1);
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146 if (push_ptr < old_low) {
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147 int old_len = _element_close_stack_high - old_ptr;
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148 int new_len = old_len * 2;
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149 if (new_len < 100) new_len = 100;
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150 char* new_low = NEW_C_HEAP_ARRAY(char, new_len);
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151 char* new_high = new_low + new_len;
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152 char* new_ptr = new_high - old_len;
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153 memcpy(new_ptr, old_ptr, old_len);
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154 _element_close_stack_high = new_high;
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155 _element_close_stack_low = new_low;
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156 _element_close_stack_ptr = new_ptr;
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157 FREE_C_HEAP_ARRAY(char, old_low);
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158 push_ptr = new_ptr - (tag_len+1);
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159 }
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160 assert(push_ptr >= _element_close_stack_low, "in range");
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161 memcpy(push_ptr, tag, tag_len);
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162 push_ptr[tag_len] = 0;
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163 _element_close_stack_ptr = push_ptr;
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164 _element_depth += 1;
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165 }
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166
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167 // ------------------------------------------------------------------
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168 void xmlStream::pop_tag(const char* tag) {
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169 assert_if_no_error(!inside_attrs(), "cannot close element inside attrs");
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170 assert(_element_depth > 0, "must be in an element to close");
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171 assert(*tag != 0, "tag must not be empty");
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172 char* cur_tag = _element_close_stack_ptr;
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173 bool bad_tag = false;
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174 while (*cur_tag != 0 && strcmp(cur_tag, tag) != 0) {
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175 this->print_cr("</%s> <!-- missing closing tag -->", cur_tag);
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176 _element_close_stack_ptr = (cur_tag += strlen(cur_tag) + 1);
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177 _element_depth -= 1;
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178 bad_tag = true;
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179 }
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180 if (*cur_tag == 0) {
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181 bad_tag = true;
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182 } else {
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183 // Pop the stack, by skipping over the tag and its null.
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184 _element_close_stack_ptr = cur_tag + strlen(cur_tag) + 1;
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185 _element_depth -= 1;
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186 }
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187 if (bad_tag && !VMThread::should_terminate() && !is_error_reported())
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188 assert(false, "bad tag in log");
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189 }
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190 #endif
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191
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192
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193 // ------------------------------------------------------------------
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194 // First word in formatted string is element kind, and any subsequent
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195 // words must be XML attributes. Outputs "<kind .../>".
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196 void xmlStream::elem(const char* format, ...) {
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197 va_list ap;
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198 va_start(ap, format);
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199 va_elem(format, ap);
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200 va_end(ap);
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201 }
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202
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203 // ------------------------------------------------------------------
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204 void xmlStream::va_elem(const char* format, va_list ap) {
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205 va_begin_elem(format, ap);
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206 end_elem();
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207 }
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208
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209
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210 // ------------------------------------------------------------------
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211 // First word in formatted string is element kind, and any subsequent
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212 // words must be XML attributes. Outputs "<kind ...", not including "/>".
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213 void xmlStream::begin_elem(const char* format, ...) {
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214 va_list ap;
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215 va_start(ap, format);
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216 va_tag(false, format, ap);
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217 va_end(ap);
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218 }
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219
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220 // ------------------------------------------------------------------
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221 void xmlStream::va_begin_elem(const char* format, va_list ap) {
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222 va_tag(false, format, ap);
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223 }
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224
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225 // ------------------------------------------------------------------
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226 // Outputs "/>".
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227 void xmlStream::end_elem() {
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228 assert(_markup_state == ELEM, "misplaced end_elem");
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229 print_raw("/>\n");
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230 _markup_state = BODY;
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231 }
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232
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233 // ------------------------------------------------------------------
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234 // Outputs formatted text, followed by "/>".
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235 void xmlStream::end_elem(const char* format, ...) {
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236 va_list ap;
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237 va_start(ap, format);
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238 out()->vprint(format, ap);
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239 va_end(ap);
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240 end_elem();
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241 }
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242
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243
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244 // ------------------------------------------------------------------
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245 // First word in formatted string is element kind, and any subsequent
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246 // words must be XML attributes. Outputs "<kind ...>".
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247 void xmlStream::head(const char* format, ...) {
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248 va_list ap;
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249 va_start(ap, format);
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250 va_head(format, ap);
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251 va_end(ap);
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252 }
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253
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254 // ------------------------------------------------------------------
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255 void xmlStream::va_head(const char* format, va_list ap) {
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256 va_begin_head(format, ap);
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257 end_head();
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258 }
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259
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260 // ------------------------------------------------------------------
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261 // First word in formatted string is element kind, and any subsequent
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262 // words must be XML attributes. Outputs "<kind ...", not including ">".
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263 void xmlStream::begin_head(const char* format, ...) {
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264 va_list ap;
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265 va_start(ap, format);
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266 va_tag(true, format, ap);
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267 va_end(ap);
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268 }
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269
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270 // ------------------------------------------------------------------
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271 void xmlStream::va_begin_head(const char* format, va_list ap) {
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272 va_tag(true, format, ap);
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273 }
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274
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275 // ------------------------------------------------------------------
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276 // Outputs ">".
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277 void xmlStream::end_head() {
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278 assert(_markup_state == HEAD, "misplaced end_head");
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279 print_raw(">\n");
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280 _markup_state = BODY;
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281 }
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282
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283
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284 // ------------------------------------------------------------------
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285 // Outputs formatted text, followed by ">".
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286 void xmlStream::end_head(const char* format, ...) {
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287 va_list ap;
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288 va_start(ap, format);
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289 out()->vprint(format, ap);
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290 va_end(ap);
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291 end_head();
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292 }
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293
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294
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295 // ------------------------------------------------------------------
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296 // Outputs "</kind>".
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297 void xmlStream::tail(const char* kind) {
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298 pop_tag(kind);
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299 print_raw("</");
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300 print_raw(kind);
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301 print_raw(">\n");
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302 }
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303
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304 // ------------------------------------------------------------------
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305 // Outputs "<kind_done ... stamp='D.DD'/> </kind>".
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306 void xmlStream::done(const char* format, ...) {
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307 va_list ap;
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308 va_start(ap, format);
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309 va_done(format, ap);
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310 va_end(ap);
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311 }
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312
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313 // ------------------------------------------------------------------
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314 // Outputs "<kind_done stamp='D.DD'/> </kind>".
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315 // Because done_raw() doesn't need to format strings, it's simpler than
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316 // done(), and can be called safely by fatal error handler.
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317 void xmlStream::done_raw(const char* kind) {
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318 print_raw("<");
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319 print_raw(kind);
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320 print_raw("_done stamp='");
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321 out()->stamp();
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322 print_raw_cr("'/>");
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323 print_raw("</");
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324 print_raw(kind);
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325 print_raw_cr(">");
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326 }
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327
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328 // ------------------------------------------------------------------
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329 void xmlStream::va_done(const char* format, va_list ap) {
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330 char buffer[200];
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331 guarantee(strlen(format) + 10 < sizeof(buffer), "bigger format buffer")
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332 const char* kind = format;
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333 const char* kind_end = strchr(kind, ' ');
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334 size_t kind_len = (kind_end != NULL) ? (kind_end - kind) : strlen(kind);
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335 strncpy(buffer, kind, kind_len);
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336 strcpy(buffer + kind_len, "_done");
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337 strcat(buffer, format + kind_len);
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338 // Output the trailing event with the timestamp.
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339 va_begin_elem(buffer, ap);
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340 stamp();
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341 end_elem();
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342 // Output the tail-tag of the enclosing element.
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343 buffer[kind_len] = 0;
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344 tail(buffer);
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345 }
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346
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347 // Output a timestamp attribute.
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348 void xmlStream::stamp() {
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349 assert_if_no_error(inside_attrs(), "stamp must be an attribute");
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350 print_raw(" stamp='");
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351 out()->stamp();
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352 print_raw("'");
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353 }
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354
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355
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356 // ------------------------------------------------------------------
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357 // Output a method attribute, in the form " method='pkg/cls name sig'".
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358 // This is used only when there is no ciMethod available.
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359 void xmlStream::method(methodHandle method) {
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360 assert_if_no_error(inside_attrs(), "printing attributes");
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361 if (method.is_null()) return;
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362 print_raw(" method='");
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363 method_text(method);
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364 print("' bytes='%d'", method->code_size());
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365 print(" count='%d'", method->invocation_count());
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366 int bec = method->backedge_count();
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367 if (bec != 0) print(" backedge_count='%d'", bec);
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368 print(" iicount='%d'", method->interpreter_invocation_count());
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369 int throwouts = method->interpreter_throwout_count();
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370 if (throwouts != 0) print(" throwouts='%d'", throwouts);
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371 methodDataOop mdo = method->method_data();
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372 if (mdo != NULL) {
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373 uint cnt;
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374 cnt = mdo->decompile_count();
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375 if (cnt != 0) print(" decompiles='%d'", cnt);
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376 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
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377 cnt = mdo->trap_count(reason);
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378 if (cnt != 0) print(" %s_traps='%d'", Deoptimization::trap_reason_name(reason), cnt);
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379 }
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380 cnt = mdo->overflow_trap_count();
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381 if (cnt != 0) print(" overflow_traps='%d'", cnt);
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382 cnt = mdo->overflow_recompile_count();
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383 if (cnt != 0) print(" overflow_recompiles='%d'", cnt);
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384 }
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385 }
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386
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387 void xmlStream::method_text(methodHandle method) {
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388 assert_if_no_error(inside_attrs(), "printing attributes");
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389 if (method.is_null()) return;
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390 //method->print_short_name(text());
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391 method->method_holder()->klass_part()->name()->print_symbol_on(text());
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392 print_raw(" "); // " " is easier for tools to parse than "::"
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393 method->name()->print_symbol_on(text());
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394 print_raw(" "); // separator
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395 method->signature()->print_symbol_on(text());
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396 }
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397
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398
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399 // ------------------------------------------------------------------
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400 // Output a klass attribute, in the form " klass='pkg/cls'".
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401 // This is used only when there is no ciKlass available.
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402 void xmlStream::klass(KlassHandle klass) {
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403 assert_if_no_error(inside_attrs(), "printing attributes");
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404 if (klass.is_null()) return;
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405 print_raw(" klass='");
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406 klass_text(klass);
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407 print_raw("'");
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408 }
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409
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410 void xmlStream::klass_text(KlassHandle klass) {
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411 assert_if_no_error(inside_attrs(), "printing attributes");
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412 if (klass.is_null()) return;
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413 //klass->print_short_name(log->out());
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414 klass->name()->print_symbol_on(out());
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415 }
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416
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417 void xmlStream::name(symbolHandle name) {
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418 assert_if_no_error(inside_attrs(), "printing attributes");
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419 if (name.is_null()) return;
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420 print_raw(" name='");
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421 name_text(name);
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422 print_raw("'");
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423 }
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424
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425 void xmlStream::name_text(symbolHandle name) {
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426 assert_if_no_error(inside_attrs(), "printing attributes");
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427 if (name.is_null()) return;
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428 //name->print_short_name(text());
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429 name->print_symbol_on(text());
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430 }
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431
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432 void xmlStream::object(const char* attr, Handle x) {
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433 assert_if_no_error(inside_attrs(), "printing attributes");
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434 if (x.is_null()) return;
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435 print_raw(" ");
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436 print_raw(attr);
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437 print_raw("='");
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438 object_text(x);
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439 print_raw("'");
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440 }
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441
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442 void xmlStream::object_text(Handle x) {
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443 assert_if_no_error(inside_attrs(), "printing attributes");
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444 if (x.is_null()) return;
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445 //x->print_value_on(text());
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446 if (x->is_method())
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447 method_text(methodOop(x()));
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448 else if (x->is_klass())
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449 klass_text(klassOop(x()));
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450 else if (x->is_symbol())
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451 name_text(symbolOop(x()));
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452 else
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453 x->print_value_on(text());
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454 }
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455
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456
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457 void xmlStream::flush() {
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458 out()->flush();
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459 _last_flush = count();
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460 }
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461
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462 void xmlTextStream::flush() {
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463 if (_outer_xmlStream == NULL) return;
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464 _outer_xmlStream->flush();
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465 }
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466
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467 void xmlTextStream::write(const char* str, size_t len) {
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468 if (_outer_xmlStream == NULL) return;
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469 _outer_xmlStream->write_text(str, len);
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470 update_position(str, len);
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471 }
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