jdk8-mips64-public/hotspot: src/share/vm/utilities/xmlstream.cpp@3582bf76420e (annotated)

src/share/vm/utilities/xmlstream.cpp@3582bf76420e (annotated)

src/share/vm/utilities/xmlstream.cpp

Thu, 27 Jan 2011 16:11:27 -0800

author: coleenp
date: Thu, 27 Jan 2011 16:11:27 -0800
changeset 2497: 3582bf76420e
parent 2314: f95d63e2154a
child 2708: 1d1603768966
permissions: -rw-r--r--

6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank

 /*
  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include "precompiled.hpp"
 #include "code/nmethod.hpp"
 #include "memory/allocation.hpp"
 #include "memory/allocation.inline.hpp"
 #include "oops/methodDataOop.hpp"
 #include "oops/methodOop.hpp"
 #include "oops/oop.inline.hpp"
 #include "runtime/deoptimization.hpp"
 #include "runtime/vmThread.hpp"
 #include "utilities/xmlstream.hpp"
 void xmlStream::initialize(outputStream* out) {
   _out = out;
   _last_flush = 0;
   _markup_state = BODY;
   _text_init._outer_xmlStream = this;
   _text = &_text_init;
 #ifdef ASSERT
   _element_depth = 0;
   int   init_len = 100;
   char* init_buf = NEW_C_HEAP_ARRAY(char, init_len);
   _element_close_stack_low  = init_buf;
   _element_close_stack_high = init_buf + init_len;
   _element_close_stack_ptr  = init_buf + init_len - 1;
   _element_close_stack_ptr[0] = '\0';
 #endif
   // Make sure each log uses the same base for time stamps.
   if (is_open()) {
     _out->time_stamp().update_to(1);
   }
 }
 #ifdef ASSERT
 xmlStream::~xmlStream() {
   FREE_C_HEAP_ARRAY(char, _element_close_stack_low);
 }
 #endif
 // Pass the given chars directly to _out.
 void xmlStream::write(const char* s, size_t len) {
   if (!is_open())  return;
   out()->write(s, len);
   update_position(s, len);
 }
 // Pass the given chars directly to _out, except that
 // we watch for special "<&>" chars.
 // This is suitable for either attribute text or for body text.
 // We don't fool with "<![CDATA[" quotes, just single-character entities.
 // This makes it easier for dumb tools to parse the output.
 void xmlStream::write_text(const char* s, size_t len) {
   if (!is_open())  return;
   size_t written = 0;
   // All normally printed material goes inside XML quotes.
   // This leaves the output free to include markup also.
   // Scan the string looking for inadvertant "<&>" chars
   for (size_t i = 0; i < len; i++) {
     char ch = s[i];
     // Escape special chars.
     const char* esc = NULL;
     switch (ch) {
       // These are important only in attrs, but we do them always:
     case '\'': esc = "&apos;"; break;
     case '"':  esc = "&quot;"; break;
     case '<':  esc = "&lt;";   break;
     case '&':  esc = "&amp;";  break;
       // This is a freebie.
     case '>':  esc = "&gt;";   break;
     }
     if (esc != NULL) {
       if (written < i) {
         out()->write(&s[written], i - written);
         written = i;
       }
       out()->print_raw(esc);
       written++;
     }
   }
   // Print the clean remainder.  Usually, it is all of s.
   if (written < len) {
     out()->write(&s[written], len - written);
   }
 }
 // ------------------------------------------------------------------
 // Outputs XML text, with special characters quoted.
 void xmlStream::text(const char* format, ...) {
   va_list ap;
   va_start(ap, format);
   va_text(format, ap);
   va_end(ap);
 }
 #define BUFLEN 2*K   /* max size of output of individual print methods */
 // ------------------------------------------------------------------
 void xmlStream::va_tag(bool push, const char* format, va_list ap) {
   assert_if_no_error(!inside_attrs(), "cannot print tag inside attrs");
   char buffer[BUFLEN];
   size_t len;
   const char* kind = do_vsnprintf(buffer, BUFLEN, format, ap, false, len);
   see_tag(kind, push);
   print_raw("<");
   write(kind, len);
   _markup_state = (push ? HEAD : ELEM);
 }
 #ifdef ASSERT
 /// Debugging goo to make sure element tags nest properly.
 // ------------------------------------------------------------------
 void xmlStream::see_tag(const char* tag, bool push) {
   assert_if_no_error(!inside_attrs(), "cannot start new element inside attrs");
   if (!push)  return;
   // tag goes up until either null or space:
   const char* tag_end = strchr(tag, ' ');
   size_t tag_len = (tag_end == NULL) ? strlen(tag) : tag_end - tag;
   assert(tag_len > 0, "tag must not be empty");
   // push the tag onto the stack, pulling down the pointer
   char* old_ptr  = _element_close_stack_ptr;
   char* old_low  = _element_close_stack_low;
   char* push_ptr = old_ptr - (tag_len+1);
   if (push_ptr < old_low) {
     int old_len = _element_close_stack_high - old_ptr;
     int new_len = old_len * 2;
     if (new_len < 100)  new_len = 100;
     char* new_low  = NEW_C_HEAP_ARRAY(char, new_len);
     char* new_high = new_low + new_len;
     char* new_ptr  = new_high - old_len;
     memcpy(new_ptr, old_ptr, old_len);
     _element_close_stack_high = new_high;
     _element_close_stack_low  = new_low;
     _element_close_stack_ptr  = new_ptr;
     FREE_C_HEAP_ARRAY(char, old_low);
     push_ptr = new_ptr - (tag_len+1);
   }
   assert(push_ptr >= _element_close_stack_low, "in range");
   memcpy(push_ptr, tag, tag_len);
   push_ptr[tag_len] = 0;
   _element_close_stack_ptr = push_ptr;
   _element_depth += 1;
 }
 // ------------------------------------------------------------------
 void xmlStream::pop_tag(const char* tag) {
   assert_if_no_error(!inside_attrs(), "cannot close element inside attrs");
   assert(_element_depth > 0, "must be in an element to close");
   assert(*tag != 0, "tag must not be empty");
   char* cur_tag = _element_close_stack_ptr;
   bool  bad_tag = false;
   while (*cur_tag != 0 && strcmp(cur_tag, tag) != 0) {
     this->print_cr("</%s> <!-- missing closing tag -->", cur_tag);
     _element_close_stack_ptr = (cur_tag += strlen(cur_tag) + 1);
     _element_depth -= 1;
     bad_tag = true;
   }
   if (*cur_tag == 0) {
     bad_tag = true;
   } else {
     // Pop the stack, by skipping over the tag and its null.
     _element_close_stack_ptr = cur_tag + strlen(cur_tag) + 1;
     _element_depth -= 1;
   }
   if (bad_tag && !VMThread::should_terminate() && !is_error_reported())
     assert(false, "bad tag in log");
 }
 #endif
 // ------------------------------------------------------------------
 // First word in formatted string is element kind, and any subsequent
 // words must be XML attributes.  Outputs "<kind .../>".
 void xmlStream::elem(const char* format, ...) {
   va_list ap;
   va_start(ap, format);
   va_elem(format, ap);
   va_end(ap);
 }
 // ------------------------------------------------------------------
 void xmlStream::va_elem(const char* format, va_list ap) {
   va_begin_elem(format, ap);
   end_elem();
 }
 // ------------------------------------------------------------------
 // First word in formatted string is element kind, and any subsequent
 // words must be XML attributes.  Outputs "<kind ...", not including "/>".
 void xmlStream::begin_elem(const char* format, ...) {
   va_list ap;
   va_start(ap, format);
   va_tag(false, format, ap);
   va_end(ap);
 }
 // ------------------------------------------------------------------
 void xmlStream::va_begin_elem(const char* format, va_list ap) {
   va_tag(false, format, ap);
 }
 // ------------------------------------------------------------------
 // Outputs "/>".
 void xmlStream::end_elem() {
   assert(_markup_state == ELEM, "misplaced end_elem");
   print_raw("/>\n");
   _markup_state = BODY;
 }
 // ------------------------------------------------------------------
 // Outputs formatted text, followed by "/>".
 void xmlStream::end_elem(const char* format, ...) {
   va_list ap;
   va_start(ap, format);
   out()->vprint(format, ap);
   va_end(ap);
   end_elem();
 }
 // ------------------------------------------------------------------
 // First word in formatted string is element kind, and any subsequent
 // words must be XML attributes.  Outputs "<kind ...>".
 void xmlStream::head(const char* format, ...) {
   va_list ap;
   va_start(ap, format);
   va_head(format, ap);
   va_end(ap);
 }
 // ------------------------------------------------------------------
 void xmlStream::va_head(const char* format, va_list ap) {
   va_begin_head(format, ap);
   end_head();
 }
 // ------------------------------------------------------------------
 // First word in formatted string is element kind, and any subsequent
 // words must be XML attributes.  Outputs "<kind ...", not including ">".
 void xmlStream::begin_head(const char* format, ...) {
   va_list ap;
   va_start(ap, format);
   va_tag(true, format, ap);
   va_end(ap);
 }
 // ------------------------------------------------------------------
 void xmlStream::va_begin_head(const char* format, va_list ap) {
   va_tag(true, format, ap);
 }
 // ------------------------------------------------------------------
 // Outputs ">".
 void xmlStream::end_head() {
   assert(_markup_state == HEAD, "misplaced end_head");
   print_raw(">\n");
   _markup_state = BODY;
 }
 // ------------------------------------------------------------------
 // Outputs formatted text, followed by ">".
 void xmlStream::end_head(const char* format, ...) {
   va_list ap;
   va_start(ap, format);
   out()->vprint(format, ap);
   va_end(ap);
   end_head();
 }
 // ------------------------------------------------------------------
 // Outputs "</kind>".
 void xmlStream::tail(const char* kind) {
   pop_tag(kind);
   print_raw("</");
   print_raw(kind);
   print_raw(">\n");
 }
 // ------------------------------------------------------------------
 // Outputs "<kind_done ... stamp='D.DD'/> </kind>".
 void xmlStream::done(const char* format, ...) {
   va_list ap;
   va_start(ap, format);
   va_done(format, ap);
   va_end(ap);
 }
 // ------------------------------------------------------------------
 // Outputs "<kind_done stamp='D.DD'/> </kind>".
 // Because done_raw() doesn't need to format strings, it's simpler than
 // done(), and can be called safely by fatal error handler.
 void xmlStream::done_raw(const char* kind) {
   print_raw("<");
   print_raw(kind);
   print_raw("_done stamp='");
   out()->stamp();
   print_raw_cr("'/>");
   print_raw("</");
   print_raw(kind);
   print_raw_cr(">");
 }
 // ------------------------------------------------------------------
 void xmlStream::va_done(const char* format, va_list ap) {
   char buffer[200];
   guarantee(strlen(format) + 10 < sizeof(buffer), "bigger format buffer");
   const char* kind = format;
   const char* kind_end = strchr(kind, ' ');
   size_t kind_len = (kind_end != NULL) ? (kind_end - kind) : strlen(kind);
   strncpy(buffer, kind, kind_len);
   strcpy(buffer + kind_len, "_done");
   strcat(buffer, format + kind_len);
   // Output the trailing event with the timestamp.
   va_begin_elem(buffer, ap);
   stamp();
   end_elem();
   // Output the tail-tag of the enclosing element.
   buffer[kind_len] = 0;
   tail(buffer);
 }
 // Output a timestamp attribute.
 void xmlStream::stamp() {
   assert_if_no_error(inside_attrs(), "stamp must be an attribute");
   print_raw(" stamp='");
   out()->stamp();
   print_raw("'");
 }
 // ------------------------------------------------------------------
 // Output a method attribute, in the form " method='pkg/cls name sig'".
 // This is used only when there is no ciMethod available.
 void xmlStream::method(methodHandle method) {
   assert_if_no_error(inside_attrs(), "printing attributes");
   if (method.is_null())  return;
   print_raw(" method='");
   method_text(method);
   print("' bytes='%d'", method->code_size());
   print(" count='%d'", method->invocation_count());
   int bec = method->backedge_count();
   if (bec != 0)  print(" backedge_count='%d'", bec);
   print(" iicount='%d'", method->interpreter_invocation_count());
   int throwouts = method->interpreter_throwout_count();
   if (throwouts != 0)  print(" throwouts='%d'", throwouts);
   methodDataOop mdo = method->method_data();
   if (mdo != NULL) {
     uint cnt;
     cnt = mdo->decompile_count();
     if (cnt != 0)  print(" decompiles='%d'", cnt);
     for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
       cnt = mdo->trap_count(reason);
       if (cnt != 0)  print(" %s_traps='%d'", Deoptimization::trap_reason_name(reason), cnt);
     }
     cnt = mdo->overflow_trap_count();
     if (cnt != 0)  print(" overflow_traps='%d'", cnt);
     cnt = mdo->overflow_recompile_count();
     if (cnt != 0)  print(" overflow_recompiles='%d'", cnt);
   }
 }
 void xmlStream::method_text(methodHandle method) {
   assert_if_no_error(inside_attrs(), "printing attributes");
   if (method.is_null())  return;
   //method->print_short_name(text());
   method->method_holder()->klass_part()->name()->print_symbol_on(text());
   print_raw(" ");  // " " is easier for tools to parse than "::"
   method->name()->print_symbol_on(text());
   print_raw(" ");  // separator
   method->signature()->print_symbol_on(text());
 }
 // ------------------------------------------------------------------
 // Output a klass attribute, in the form " klass='pkg/cls'".
 // This is used only when there is no ciKlass available.
 void xmlStream::klass(KlassHandle klass) {
   assert_if_no_error(inside_attrs(), "printing attributes");
   if (klass.is_null())  return;
   print_raw(" klass='");
   klass_text(klass);
   print_raw("'");
 }
 void xmlStream::klass_text(KlassHandle klass) {
   assert_if_no_error(inside_attrs(), "printing attributes");
   if (klass.is_null())  return;
   //klass->print_short_name(log->out());
   klass->name()->print_symbol_on(out());
 }
 void xmlStream::name(const Symbol* name) {
   assert_if_no_error(inside_attrs(), "printing attributes");
   if (name == NULL)  return;
   print_raw(" name='");
   name_text(name);
   print_raw("'");
 }
 void xmlStream::name_text(const Symbol* name) {
   assert_if_no_error(inside_attrs(), "printing attributes");
   if (name == NULL)  return;
   //name->print_short_name(text());
   name->print_symbol_on(text());
 }
 void xmlStream::object(const char* attr, Handle x) {
   assert_if_no_error(inside_attrs(), "printing attributes");
   if (x.is_null())  return;
   print_raw(" ");
   print_raw(attr);
   print_raw("='");
   object_text(x);
   print_raw("'");
 }
 void xmlStream::object_text(Handle x) {
   assert_if_no_error(inside_attrs(), "printing attributes");
   if (x.is_null())  return;
   //x->print_value_on(text());
   if (x->is_method())
     method_text(methodOop(x()));
   else if (x->is_klass())
     klass_text(klassOop(x()));
   else
     x->print_value_on(text());
 }
 void xmlStream::flush() {
   out()->flush();
   _last_flush = count();
 }
 void xmlTextStream::flush() {
   if (_outer_xmlStream == NULL)  return;
   _outer_xmlStream->flush();
 }
 void xmlTextStream::write(const char* str, size_t len) {
   if (_outer_xmlStream == NULL)  return;
   _outer_xmlStream->write_text(str, len);
   update_position(str, len);
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/utilities/xmlstream.cpp@3582bf76420e (annotated)

src/share/vm/utilities/xmlstream.cpp