Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 2002, 2014, 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/methodData.hpp"

 #include "oops/method.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, mtInternal);

   _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, mtInternal);

 }

 #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 = "'"; break;

     case '"':  esc = """; break;

     case '<':  esc = "&lt;";   break;

     case '&':  esc = "&";  break;

       // This is a freebie.

     case '>':  esc = ">";   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, mtInternal);

     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, mtInternal);

     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() && !VM_Exit::vm_exited() &&

       !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(">");

 }

 PRAGMA_DIAG_PUSH

 PRAGMA_FORMAT_NONLITERAL_IGNORED

 // ------------------------------------------------------------------

 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);

 }

 PRAGMA_DIAG_POP

 // 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);

   MethodData* 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()->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 == 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 == NULL)  return;

   x->print_value_on(text());

 }

 void xmlStream::object(const char* attr, Metadata* x) {

   assert_if_no_error(inside_attrs(), "printing attributes");

   if (x == NULL)  return;

   print_raw(" ");

   print_raw(attr);

   print_raw("='");

   object_text(x);

   print_raw("'");

 }

 void xmlStream::object_text(Metadata* x) {

   assert_if_no_error(inside_attrs(), "printing attributes");

   if (x == NULL)  return;

   //x->print_value_on(text());

   if (x->is_method())

     method_text((Method*)x);

   else if (x->is_klass())

     klass_text((Klass*)x);

   else

     ShouldNotReachHere(); // Add impl if this is reached.

 }

 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);

 }