xmlstream.cpp revision 3602:da91efe96a93
1/* 2 * Copyright (c) 2002, 2012, 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 "precompiled.hpp" 26#include "code/nmethod.hpp" 27#include "memory/allocation.hpp" 28#include "memory/allocation.inline.hpp" 29#include "oops/methodData.hpp" 30#include "oops/method.hpp" 31#include "oops/oop.inline.hpp" 32#include "runtime/deoptimization.hpp" 33#include "runtime/vmThread.hpp" 34#include "utilities/xmlstream.hpp" 35 36void xmlStream::initialize(outputStream* out) { 37 _out = out; 38 _last_flush = 0; 39 _markup_state = BODY; 40 _text_init._outer_xmlStream = this; 41 _text = &_text_init; 42 43#ifdef ASSERT 44 _element_depth = 0; 45 int init_len = 100; 46 char* init_buf = NEW_C_HEAP_ARRAY(char, init_len, mtInternal); 47 _element_close_stack_low = init_buf; 48 _element_close_stack_high = init_buf + init_len; 49 _element_close_stack_ptr = init_buf + init_len - 1; 50 _element_close_stack_ptr[0] = '\0'; 51#endif 52 53 // Make sure each log uses the same base for time stamps. 54 if (is_open()) { 55 _out->time_stamp().update_to(1); 56 } 57} 58 59#ifdef ASSERT 60xmlStream::~xmlStream() { 61 FREE_C_HEAP_ARRAY(char, _element_close_stack_low, mtInternal); 62} 63#endif 64 65// Pass the given chars directly to _out. 66void xmlStream::write(const char* s, size_t len) { 67 if (!is_open()) return; 68 69 out()->write(s, len); 70 update_position(s, len); 71} 72 73 74// Pass the given chars directly to _out, except that 75// we watch for special "<&>" chars. 76// This is suitable for either attribute text or for body text. 77// We don't fool with "<![CDATA[" quotes, just single-character entities. 78// This makes it easier for dumb tools to parse the output. 79void xmlStream::write_text(const char* s, size_t len) { 80 if (!is_open()) return; 81 82 size_t written = 0; 83 // All normally printed material goes inside XML quotes. 84 // This leaves the output free to include markup also. 85 // Scan the string looking for inadvertant "<&>" chars 86 for (size_t i = 0; i < len; i++) { 87 char ch = s[i]; 88 // Escape special chars. 89 const char* esc = NULL; 90 switch (ch) { 91 // These are important only in attrs, but we do them always: 92 case '\'': esc = "'"; break; 93 case '"': esc = """; break; 94 case '<': esc = "<"; break; 95 case '&': esc = "&"; break; 96 // This is a freebie. 97 case '>': esc = ">"; break; 98 } 99 if (esc != NULL) { 100 if (written < i) { 101 out()->write(&s[written], i - written); 102 written = i; 103 } 104 out()->print_raw(esc); 105 written++; 106 } 107 } 108 109 // Print the clean remainder. Usually, it is all of s. 110 if (written < len) { 111 out()->write(&s[written], len - written); 112 } 113} 114 115// ------------------------------------------------------------------ 116// Outputs XML text, with special characters quoted. 117void xmlStream::text(const char* format, ...) { 118 va_list ap; 119 va_start(ap, format); 120 va_text(format, ap); 121 va_end(ap); 122} 123 124#define BUFLEN 2*K /* max size of output of individual print methods */ 125 126// ------------------------------------------------------------------ 127void xmlStream::va_tag(bool push, const char* format, va_list ap) { 128 assert_if_no_error(!inside_attrs(), "cannot print tag inside attrs"); 129 char buffer[BUFLEN]; 130 size_t len; 131 const char* kind = do_vsnprintf(buffer, BUFLEN, format, ap, false, len); 132 see_tag(kind, push); 133 print_raw("<"); 134 write(kind, len); 135 _markup_state = (push ? HEAD : ELEM); 136} 137 138#ifdef ASSERT 139/// Debugging goo to make sure element tags nest properly. 140 141// ------------------------------------------------------------------ 142void xmlStream::see_tag(const char* tag, bool push) { 143 assert_if_no_error(!inside_attrs(), "cannot start new element inside attrs"); 144 if (!push) return; 145 146 // tag goes up until either null or space: 147 const char* tag_end = strchr(tag, ' '); 148 size_t tag_len = (tag_end == NULL) ? strlen(tag) : tag_end - tag; 149 assert(tag_len > 0, "tag must not be empty"); 150 // push the tag onto the stack, pulling down the pointer 151 char* old_ptr = _element_close_stack_ptr; 152 char* old_low = _element_close_stack_low; 153 char* push_ptr = old_ptr - (tag_len+1); 154 if (push_ptr < old_low) { 155 int old_len = _element_close_stack_high - old_ptr; 156 int new_len = old_len * 2; 157 if (new_len < 100) new_len = 100; 158 char* new_low = NEW_C_HEAP_ARRAY(char, new_len, mtInternal); 159 char* new_high = new_low + new_len; 160 char* new_ptr = new_high - old_len; 161 memcpy(new_ptr, old_ptr, old_len); 162 _element_close_stack_high = new_high; 163 _element_close_stack_low = new_low; 164 _element_close_stack_ptr = new_ptr; 165 FREE_C_HEAP_ARRAY(char, old_low, mtInternal); 166 push_ptr = new_ptr - (tag_len+1); 167 } 168 assert(push_ptr >= _element_close_stack_low, "in range"); 169 memcpy(push_ptr, tag, tag_len); 170 push_ptr[tag_len] = 0; 171 _element_close_stack_ptr = push_ptr; 172 _element_depth += 1; 173} 174 175// ------------------------------------------------------------------ 176void xmlStream::pop_tag(const char* tag) { 177 assert_if_no_error(!inside_attrs(), "cannot close element inside attrs"); 178 assert(_element_depth > 0, "must be in an element to close"); 179 assert(*tag != 0, "tag must not be empty"); 180 char* cur_tag = _element_close_stack_ptr; 181 bool bad_tag = false; 182 while (*cur_tag != 0 && strcmp(cur_tag, tag) != 0) { 183 this->print_cr("</%s> <!-- missing closing tag -->", cur_tag); 184 _element_close_stack_ptr = (cur_tag += strlen(cur_tag) + 1); 185 _element_depth -= 1; 186 bad_tag = true; 187 } 188 if (*cur_tag == 0) { 189 bad_tag = true; 190 } else { 191 // Pop the stack, by skipping over the tag and its null. 192 _element_close_stack_ptr = cur_tag + strlen(cur_tag) + 1; 193 _element_depth -= 1; 194 } 195 if (bad_tag && !VMThread::should_terminate() && !VM_Exit::vm_exited() && 196 !is_error_reported()) 197 { 198 assert(false, "bad tag in log"); 199 } 200} 201#endif 202 203 204// ------------------------------------------------------------------ 205// First word in formatted string is element kind, and any subsequent 206// words must be XML attributes. Outputs "<kind .../>". 207void xmlStream::elem(const char* format, ...) { 208 va_list ap; 209 va_start(ap, format); 210 va_elem(format, ap); 211 va_end(ap); 212} 213 214// ------------------------------------------------------------------ 215void xmlStream::va_elem(const char* format, va_list ap) { 216 va_begin_elem(format, ap); 217 end_elem(); 218} 219 220 221// ------------------------------------------------------------------ 222// First word in formatted string is element kind, and any subsequent 223// words must be XML attributes. Outputs "<kind ...", not including "/>". 224void xmlStream::begin_elem(const char* format, ...) { 225 va_list ap; 226 va_start(ap, format); 227 va_tag(false, format, ap); 228 va_end(ap); 229} 230 231// ------------------------------------------------------------------ 232void xmlStream::va_begin_elem(const char* format, va_list ap) { 233 va_tag(false, format, ap); 234} 235 236// ------------------------------------------------------------------ 237// Outputs "/>". 238void xmlStream::end_elem() { 239 assert(_markup_state == ELEM, "misplaced end_elem"); 240 print_raw("/>\n"); 241 _markup_state = BODY; 242} 243 244// ------------------------------------------------------------------ 245// Outputs formatted text, followed by "/>". 246void xmlStream::end_elem(const char* format, ...) { 247 va_list ap; 248 va_start(ap, format); 249 out()->vprint(format, ap); 250 va_end(ap); 251 end_elem(); 252} 253 254 255// ------------------------------------------------------------------ 256// First word in formatted string is element kind, and any subsequent 257// words must be XML attributes. Outputs "<kind ...>". 258void xmlStream::head(const char* format, ...) { 259 va_list ap; 260 va_start(ap, format); 261 va_head(format, ap); 262 va_end(ap); 263} 264 265// ------------------------------------------------------------------ 266void xmlStream::va_head(const char* format, va_list ap) { 267 va_begin_head(format, ap); 268 end_head(); 269} 270 271// ------------------------------------------------------------------ 272// First word in formatted string is element kind, and any subsequent 273// words must be XML attributes. Outputs "<kind ...", not including ">". 274void xmlStream::begin_head(const char* format, ...) { 275 va_list ap; 276 va_start(ap, format); 277 va_tag(true, format, ap); 278 va_end(ap); 279} 280 281// ------------------------------------------------------------------ 282void xmlStream::va_begin_head(const char* format, va_list ap) { 283 va_tag(true, format, ap); 284} 285 286// ------------------------------------------------------------------ 287// Outputs ">". 288void xmlStream::end_head() { 289 assert(_markup_state == HEAD, "misplaced end_head"); 290 print_raw(">\n"); 291 _markup_state = BODY; 292} 293 294 295// ------------------------------------------------------------------ 296// Outputs formatted text, followed by ">". 297void xmlStream::end_head(const char* format, ...) { 298 va_list ap; 299 va_start(ap, format); 300 out()->vprint(format, ap); 301 va_end(ap); 302 end_head(); 303} 304 305 306// ------------------------------------------------------------------ 307// Outputs "</kind>". 308void xmlStream::tail(const char* kind) { 309 pop_tag(kind); 310 print_raw("</"); 311 print_raw(kind); 312 print_raw(">\n"); 313} 314 315// ------------------------------------------------------------------ 316// Outputs "<kind_done ... stamp='D.DD'/> </kind>". 317void xmlStream::done(const char* format, ...) { 318 va_list ap; 319 va_start(ap, format); 320 va_done(format, ap); 321 va_end(ap); 322} 323 324// ------------------------------------------------------------------ 325// Outputs "<kind_done stamp='D.DD'/> </kind>". 326// Because done_raw() doesn't need to format strings, it's simpler than 327// done(), and can be called safely by fatal error handler. 328void xmlStream::done_raw(const char* kind) { 329 print_raw("<"); 330 print_raw(kind); 331 print_raw("_done stamp='"); 332 out()->stamp(); 333 print_raw_cr("'/>"); 334 print_raw("</"); 335 print_raw(kind); 336 print_raw_cr(">"); 337} 338 339// ------------------------------------------------------------------ 340void xmlStream::va_done(const char* format, va_list ap) { 341 char buffer[200]; 342 guarantee(strlen(format) + 10 < sizeof(buffer), "bigger format buffer"); 343 const char* kind = format; 344 const char* kind_end = strchr(kind, ' '); 345 size_t kind_len = (kind_end != NULL) ? (kind_end - kind) : strlen(kind); 346 strncpy(buffer, kind, kind_len); 347 strcpy(buffer + kind_len, "_done"); 348 strcat(buffer, format + kind_len); 349 // Output the trailing event with the timestamp. 350 va_begin_elem(buffer, ap); 351 stamp(); 352 end_elem(); 353 // Output the tail-tag of the enclosing element. 354 buffer[kind_len] = 0; 355 tail(buffer); 356} 357 358// Output a timestamp attribute. 359void xmlStream::stamp() { 360 assert_if_no_error(inside_attrs(), "stamp must be an attribute"); 361 print_raw(" stamp='"); 362 out()->stamp(); 363 print_raw("'"); 364} 365 366 367// ------------------------------------------------------------------ 368// Output a method attribute, in the form " method='pkg/cls name sig'". 369// This is used only when there is no ciMethod available. 370void xmlStream::method(methodHandle method) { 371 assert_if_no_error(inside_attrs(), "printing attributes"); 372 if (method.is_null()) return; 373 print_raw(" method='"); 374 method_text(method); 375 print("' bytes='%d'", method->code_size()); 376 print(" count='%d'", method->invocation_count()); 377 int bec = method->backedge_count(); 378 if (bec != 0) print(" backedge_count='%d'", bec); 379 print(" iicount='%d'", method->interpreter_invocation_count()); 380 int throwouts = method->interpreter_throwout_count(); 381 if (throwouts != 0) print(" throwouts='%d'", throwouts); 382 MethodData* mdo = method->method_data(); 383 if (mdo != NULL) { 384 uint cnt; 385 cnt = mdo->decompile_count(); 386 if (cnt != 0) print(" decompiles='%d'", cnt); 387 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) { 388 cnt = mdo->trap_count(reason); 389 if (cnt != 0) print(" %s_traps='%d'", Deoptimization::trap_reason_name(reason), cnt); 390 } 391 cnt = mdo->overflow_trap_count(); 392 if (cnt != 0) print(" overflow_traps='%d'", cnt); 393 cnt = mdo->overflow_recompile_count(); 394 if (cnt != 0) print(" overflow_recompiles='%d'", cnt); 395 } 396} 397 398void xmlStream::method_text(methodHandle method) { 399 assert_if_no_error(inside_attrs(), "printing attributes"); 400 if (method.is_null()) return; 401 //method->print_short_name(text()); 402 method->method_holder()->name()->print_symbol_on(text()); 403 print_raw(" "); // " " is easier for tools to parse than "::" 404 method->name()->print_symbol_on(text()); 405 print_raw(" "); // separator 406 method->signature()->print_symbol_on(text()); 407} 408 409 410// ------------------------------------------------------------------ 411// Output a klass attribute, in the form " klass='pkg/cls'". 412// This is used only when there is no ciKlass available. 413void xmlStream::klass(KlassHandle klass) { 414 assert_if_no_error(inside_attrs(), "printing attributes"); 415 if (klass.is_null()) return; 416 print_raw(" klass='"); 417 klass_text(klass); 418 print_raw("'"); 419} 420 421void xmlStream::klass_text(KlassHandle klass) { 422 assert_if_no_error(inside_attrs(), "printing attributes"); 423 if (klass.is_null()) return; 424 //klass->print_short_name(log->out()); 425 klass->name()->print_symbol_on(out()); 426} 427 428void xmlStream::name(const Symbol* name) { 429 assert_if_no_error(inside_attrs(), "printing attributes"); 430 if (name == NULL) return; 431 print_raw(" name='"); 432 name_text(name); 433 print_raw("'"); 434} 435 436void xmlStream::name_text(const Symbol* name) { 437 assert_if_no_error(inside_attrs(), "printing attributes"); 438 if (name == NULL) return; 439 //name->print_short_name(text()); 440 name->print_symbol_on(text()); 441} 442 443void xmlStream::object(const char* attr, Handle x) { 444 assert_if_no_error(inside_attrs(), "printing attributes"); 445 if (x == NULL) return; 446 print_raw(" "); 447 print_raw(attr); 448 print_raw("='"); 449 object_text(x); 450 print_raw("'"); 451} 452 453void xmlStream::object_text(Handle x) { 454 assert_if_no_error(inside_attrs(), "printing attributes"); 455 if (x == NULL) return; 456 x->print_value_on(text()); 457} 458 459 460void xmlStream::object(const char* attr, Metadata* x) { 461 assert_if_no_error(inside_attrs(), "printing attributes"); 462 if (x == NULL) return; 463 print_raw(" "); 464 print_raw(attr); 465 print_raw("='"); 466 object_text(x); 467 print_raw("'"); 468} 469 470void xmlStream::object_text(Metadata* x) { 471 assert_if_no_error(inside_attrs(), "printing attributes"); 472 if (x == NULL) return; 473 //x->print_value_on(text()); 474 if (x->is_method()) 475 method_text((Method*)x); 476 else if (x->is_klass()) 477 klass_text((Klass*)x); 478 else 479 ShouldNotReachHere(); // Add impl if this is reached. 480} 481 482 483void xmlStream::flush() { 484 out()->flush(); 485 _last_flush = count(); 486} 487 488void xmlTextStream::flush() { 489 if (_outer_xmlStream == NULL) return; 490 _outer_xmlStream->flush(); 491} 492 493void xmlTextStream::write(const char* str, size_t len) { 494 if (_outer_xmlStream == NULL) return; 495 _outer_xmlStream->write_text(str, len); 496 update_position(str, len); 497} 498