xmlstream.cpp revision 1472:c18cbe5936b8
1/* 2 * Copyright (c) 2002, 2007, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25#include "incls/_precompiled.incl" 26#include "incls/_xmlstream.cpp.incl" 27 28void xmlStream::initialize(outputStream* out) { 29 _out = out; 30 _last_flush = 0; 31 _markup_state = BODY; 32 _text_init._outer_xmlStream = this; 33 _text = &_text_init; 34 35#ifdef ASSERT 36 _element_depth = 0; 37 int init_len = 100; 38 char* init_buf = NEW_C_HEAP_ARRAY(char, init_len); 39 _element_close_stack_low = init_buf; 40 _element_close_stack_high = init_buf + init_len; 41 _element_close_stack_ptr = init_buf + init_len - 1; 42 _element_close_stack_ptr[0] = '\0'; 43#endif 44 45 // Make sure each log uses the same base for time stamps. 46 if (is_open()) { 47 _out->time_stamp().update_to(1); 48 } 49} 50 51#ifdef ASSERT 52xmlStream::~xmlStream() { 53 FREE_C_HEAP_ARRAY(char, _element_close_stack_low); 54} 55#endif 56 57// Pass the given chars directly to _out. 58void xmlStream::write(const char* s, size_t len) { 59 if (!is_open()) return; 60 61 out()->write(s, len); 62 update_position(s, len); 63} 64 65 66// Pass the given chars directly to _out, except that 67// we watch for special "<&>" chars. 68// This is suitable for either attribute text or for body text. 69// We don't fool with "<![CDATA[" quotes, just single-character entities. 70// This makes it easier for dumb tools to parse the output. 71void xmlStream::write_text(const char* s, size_t len) { 72 if (!is_open()) return; 73 74 size_t written = 0; 75 // All normally printed material goes inside XML quotes. 76 // This leaves the output free to include markup also. 77 // Scan the string looking for inadvertant "<&>" chars 78 for (size_t i = 0; i < len; i++) { 79 char ch = s[i]; 80 // Escape special chars. 81 const char* esc = NULL; 82 switch (ch) { 83 // These are important only in attrs, but we do them always: 84 case '\'': esc = "'"; break; 85 case '"': esc = """; break; 86 case '<': esc = "<"; break; 87 case '&': esc = "&"; break; 88 // This is a freebie. 89 case '>': esc = ">"; break; 90 } 91 if (esc != NULL) { 92 if (written < i) { 93 out()->write(&s[written], i - written); 94 written = i; 95 } 96 out()->print_raw(esc); 97 written++; 98 } 99 } 100 101 // Print the clean remainder. Usually, it is all of s. 102 if (written < len) { 103 out()->write(&s[written], len - written); 104 } 105} 106 107// ------------------------------------------------------------------ 108// Outputs XML text, with special characters quoted. 109void xmlStream::text(const char* format, ...) { 110 va_list ap; 111 va_start(ap, format); 112 va_text(format, ap); 113 va_end(ap); 114} 115 116#define BUFLEN 2*K /* max size of output of individual print methods */ 117 118// ------------------------------------------------------------------ 119void xmlStream::va_tag(bool push, const char* format, va_list ap) { 120 assert_if_no_error(!inside_attrs(), "cannot print tag inside attrs"); 121 char buffer[BUFLEN]; 122 size_t len; 123 const char* kind = do_vsnprintf(buffer, BUFLEN, format, ap, false, len); 124 see_tag(kind, push); 125 print_raw("<"); 126 write(kind, len); 127 _markup_state = (push ? HEAD : ELEM); 128} 129 130#ifdef ASSERT 131/// Debugging goo to make sure element tags nest properly. 132 133// ------------------------------------------------------------------ 134void xmlStream::see_tag(const char* tag, bool push) { 135 assert_if_no_error(!inside_attrs(), "cannot start new element inside attrs"); 136 if (!push) return; 137 138 // tag goes up until either null or space: 139 const char* tag_end = strchr(tag, ' '); 140 size_t tag_len = (tag_end == NULL) ? strlen(tag) : tag_end - tag; 141 assert(tag_len > 0, "tag must not be empty"); 142 // push the tag onto the stack, pulling down the pointer 143 char* old_ptr = _element_close_stack_ptr; 144 char* old_low = _element_close_stack_low; 145 char* push_ptr = old_ptr - (tag_len+1); 146 if (push_ptr < old_low) { 147 int old_len = _element_close_stack_high - old_ptr; 148 int new_len = old_len * 2; 149 if (new_len < 100) new_len = 100; 150 char* new_low = NEW_C_HEAP_ARRAY(char, new_len); 151 char* new_high = new_low + new_len; 152 char* new_ptr = new_high - old_len; 153 memcpy(new_ptr, old_ptr, old_len); 154 _element_close_stack_high = new_high; 155 _element_close_stack_low = new_low; 156 _element_close_stack_ptr = new_ptr; 157 FREE_C_HEAP_ARRAY(char, old_low); 158 push_ptr = new_ptr - (tag_len+1); 159 } 160 assert(push_ptr >= _element_close_stack_low, "in range"); 161 memcpy(push_ptr, tag, tag_len); 162 push_ptr[tag_len] = 0; 163 _element_close_stack_ptr = push_ptr; 164 _element_depth += 1; 165} 166 167// ------------------------------------------------------------------ 168void xmlStream::pop_tag(const char* tag) { 169 assert_if_no_error(!inside_attrs(), "cannot close element inside attrs"); 170 assert(_element_depth > 0, "must be in an element to close"); 171 assert(*tag != 0, "tag must not be empty"); 172 char* cur_tag = _element_close_stack_ptr; 173 bool bad_tag = false; 174 while (*cur_tag != 0 && strcmp(cur_tag, tag) != 0) { 175 this->print_cr("</%s> <!-- missing closing tag -->", cur_tag); 176 _element_close_stack_ptr = (cur_tag += strlen(cur_tag) + 1); 177 _element_depth -= 1; 178 bad_tag = true; 179 } 180 if (*cur_tag == 0) { 181 bad_tag = true; 182 } else { 183 // Pop the stack, by skipping over the tag and its null. 184 _element_close_stack_ptr = cur_tag + strlen(cur_tag) + 1; 185 _element_depth -= 1; 186 } 187 if (bad_tag && !VMThread::should_terminate() && !is_error_reported()) 188 assert(false, "bad tag in log"); 189} 190#endif 191 192 193// ------------------------------------------------------------------ 194// First word in formatted string is element kind, and any subsequent 195// words must be XML attributes. Outputs "<kind .../>". 196void xmlStream::elem(const char* format, ...) { 197 va_list ap; 198 va_start(ap, format); 199 va_elem(format, ap); 200 va_end(ap); 201} 202 203// ------------------------------------------------------------------ 204void xmlStream::va_elem(const char* format, va_list ap) { 205 va_begin_elem(format, ap); 206 end_elem(); 207} 208 209 210// ------------------------------------------------------------------ 211// First word in formatted string is element kind, and any subsequent 212// words must be XML attributes. Outputs "<kind ...", not including "/>". 213void xmlStream::begin_elem(const char* format, ...) { 214 va_list ap; 215 va_start(ap, format); 216 va_tag(false, format, ap); 217 va_end(ap); 218} 219 220// ------------------------------------------------------------------ 221void xmlStream::va_begin_elem(const char* format, va_list ap) { 222 va_tag(false, format, ap); 223} 224 225// ------------------------------------------------------------------ 226// Outputs "/>". 227void xmlStream::end_elem() { 228 assert(_markup_state == ELEM, "misplaced end_elem"); 229 print_raw("/>\n"); 230 _markup_state = BODY; 231} 232 233// ------------------------------------------------------------------ 234// Outputs formatted text, followed by "/>". 235void xmlStream::end_elem(const char* format, ...) { 236 va_list ap; 237 va_start(ap, format); 238 out()->vprint(format, ap); 239 va_end(ap); 240 end_elem(); 241} 242 243 244// ------------------------------------------------------------------ 245// First word in formatted string is element kind, and any subsequent 246// words must be XML attributes. Outputs "<kind ...>". 247void xmlStream::head(const char* format, ...) { 248 va_list ap; 249 va_start(ap, format); 250 va_head(format, ap); 251 va_end(ap); 252} 253 254// ------------------------------------------------------------------ 255void xmlStream::va_head(const char* format, va_list ap) { 256 va_begin_head(format, ap); 257 end_head(); 258} 259 260// ------------------------------------------------------------------ 261// First word in formatted string is element kind, and any subsequent 262// words must be XML attributes. Outputs "<kind ...", not including ">". 263void xmlStream::begin_head(const char* format, ...) { 264 va_list ap; 265 va_start(ap, format); 266 va_tag(true, format, ap); 267 va_end(ap); 268} 269 270// ------------------------------------------------------------------ 271void xmlStream::va_begin_head(const char* format, va_list ap) { 272 va_tag(true, format, ap); 273} 274 275// ------------------------------------------------------------------ 276// Outputs ">". 277void xmlStream::end_head() { 278 assert(_markup_state == HEAD, "misplaced end_head"); 279 print_raw(">\n"); 280 _markup_state = BODY; 281} 282 283 284// ------------------------------------------------------------------ 285// Outputs formatted text, followed by ">". 286void xmlStream::end_head(const char* format, ...) { 287 va_list ap; 288 va_start(ap, format); 289 out()->vprint(format, ap); 290 va_end(ap); 291 end_head(); 292} 293 294 295// ------------------------------------------------------------------ 296// Outputs "</kind>". 297void xmlStream::tail(const char* kind) { 298 pop_tag(kind); 299 print_raw("</"); 300 print_raw(kind); 301 print_raw(">\n"); 302} 303 304// ------------------------------------------------------------------ 305// Outputs "<kind_done ... stamp='D.DD'/> </kind>". 306void xmlStream::done(const char* format, ...) { 307 va_list ap; 308 va_start(ap, format); 309 va_done(format, ap); 310 va_end(ap); 311} 312 313// ------------------------------------------------------------------ 314// Outputs "<kind_done stamp='D.DD'/> </kind>". 315// Because done_raw() doesn't need to format strings, it's simpler than 316// done(), and can be called safely by fatal error handler. 317void xmlStream::done_raw(const char* kind) { 318 print_raw("<"); 319 print_raw(kind); 320 print_raw("_done stamp='"); 321 out()->stamp(); 322 print_raw_cr("'/>"); 323 print_raw("</"); 324 print_raw(kind); 325 print_raw_cr(">"); 326} 327 328// ------------------------------------------------------------------ 329void xmlStream::va_done(const char* format, va_list ap) { 330 char buffer[200]; 331 guarantee(strlen(format) + 10 < sizeof(buffer), "bigger format buffer"); 332 const char* kind = format; 333 const char* kind_end = strchr(kind, ' '); 334 size_t kind_len = (kind_end != NULL) ? (kind_end - kind) : strlen(kind); 335 strncpy(buffer, kind, kind_len); 336 strcpy(buffer + kind_len, "_done"); 337 strcat(buffer, format + kind_len); 338 // Output the trailing event with the timestamp. 339 va_begin_elem(buffer, ap); 340 stamp(); 341 end_elem(); 342 // Output the tail-tag of the enclosing element. 343 buffer[kind_len] = 0; 344 tail(buffer); 345} 346 347// Output a timestamp attribute. 348void xmlStream::stamp() { 349 assert_if_no_error(inside_attrs(), "stamp must be an attribute"); 350 print_raw(" stamp='"); 351 out()->stamp(); 352 print_raw("'"); 353} 354 355 356// ------------------------------------------------------------------ 357// Output a method attribute, in the form " method='pkg/cls name sig'". 358// This is used only when there is no ciMethod available. 359void xmlStream::method(methodHandle method) { 360 assert_if_no_error(inside_attrs(), "printing attributes"); 361 if (method.is_null()) return; 362 print_raw(" method='"); 363 method_text(method); 364 print("' bytes='%d'", method->code_size()); 365 print(" count='%d'", method->invocation_count()); 366 int bec = method->backedge_count(); 367 if (bec != 0) print(" backedge_count='%d'", bec); 368 print(" iicount='%d'", method->interpreter_invocation_count()); 369 int throwouts = method->interpreter_throwout_count(); 370 if (throwouts != 0) print(" throwouts='%d'", throwouts); 371 methodDataOop mdo = method->method_data(); 372 if (mdo != NULL) { 373 uint cnt; 374 cnt = mdo->decompile_count(); 375 if (cnt != 0) print(" decompiles='%d'", cnt); 376 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) { 377 cnt = mdo->trap_count(reason); 378 if (cnt != 0) print(" %s_traps='%d'", Deoptimization::trap_reason_name(reason), cnt); 379 } 380 cnt = mdo->overflow_trap_count(); 381 if (cnt != 0) print(" overflow_traps='%d'", cnt); 382 cnt = mdo->overflow_recompile_count(); 383 if (cnt != 0) print(" overflow_recompiles='%d'", cnt); 384 } 385} 386 387void xmlStream::method_text(methodHandle method) { 388 assert_if_no_error(inside_attrs(), "printing attributes"); 389 if (method.is_null()) return; 390 //method->print_short_name(text()); 391 method->method_holder()->klass_part()->name()->print_symbol_on(text()); 392 print_raw(" "); // " " is easier for tools to parse than "::" 393 method->name()->print_symbol_on(text()); 394 print_raw(" "); // separator 395 method->signature()->print_symbol_on(text()); 396} 397 398 399// ------------------------------------------------------------------ 400// Output a klass attribute, in the form " klass='pkg/cls'". 401// This is used only when there is no ciKlass available. 402void xmlStream::klass(KlassHandle klass) { 403 assert_if_no_error(inside_attrs(), "printing attributes"); 404 if (klass.is_null()) return; 405 print_raw(" klass='"); 406 klass_text(klass); 407 print_raw("'"); 408} 409 410void xmlStream::klass_text(KlassHandle klass) { 411 assert_if_no_error(inside_attrs(), "printing attributes"); 412 if (klass.is_null()) return; 413 //klass->print_short_name(log->out()); 414 klass->name()->print_symbol_on(out()); 415} 416 417void xmlStream::name(symbolHandle name) { 418 assert_if_no_error(inside_attrs(), "printing attributes"); 419 if (name.is_null()) return; 420 print_raw(" name='"); 421 name_text(name); 422 print_raw("'"); 423} 424 425void xmlStream::name_text(symbolHandle name) { 426 assert_if_no_error(inside_attrs(), "printing attributes"); 427 if (name.is_null()) return; 428 //name->print_short_name(text()); 429 name->print_symbol_on(text()); 430} 431 432void xmlStream::object(const char* attr, Handle x) { 433 assert_if_no_error(inside_attrs(), "printing attributes"); 434 if (x.is_null()) return; 435 print_raw(" "); 436 print_raw(attr); 437 print_raw("='"); 438 object_text(x); 439 print_raw("'"); 440} 441 442void xmlStream::object_text(Handle x) { 443 assert_if_no_error(inside_attrs(), "printing attributes"); 444 if (x.is_null()) return; 445 //x->print_value_on(text()); 446 if (x->is_method()) 447 method_text(methodOop(x())); 448 else if (x->is_klass()) 449 klass_text(klassOop(x())); 450 else if (x->is_symbol()) 451 name_text(symbolOop(x())); 452 else 453 x->print_value_on(text()); 454} 455 456 457void xmlStream::flush() { 458 out()->flush(); 459 _last_flush = count(); 460} 461 462void xmlTextStream::flush() { 463 if (_outer_xmlStream == NULL) return; 464 _outer_xmlStream->flush(); 465} 466 467void xmlTextStream::write(const char* str, size_t len) { 468 if (_outer_xmlStream == NULL) return; 469 _outer_xmlStream->write_text(str, len); 470 update_position(str, len); 471} 472