jdk8-mips64-public/hotspot: src/share/vm/ci/ciSymbol.cpp@bd7a7ce2e264 (annotated)

src/share/vm/ci/ciSymbol.cpp@bd7a7ce2e264 (annotated)

src/share/vm/ci/ciSymbol.cpp

Mon, 12 Nov 2012 14:03:53 -0800

author: minqi
date: Mon, 12 Nov 2012 14:03:53 -0800
changeset 4267: bd7a7ce2e264
parent 4153: b9a9ed0f8eeb
child 6876: 710a3c8b516e
permissions: -rw-r--r--

6830717: replay of compilations would help with debugging
Summary: When java process crashed in compiler thread, repeat the compilation process will help finding root cause. This is done with using SA dump application class data and replay data from core dump, then use debug version of jvm to recompile the problematic java method.
Reviewed-by: kvn, twisti, sspitsyn
Contributed-by: yumin.qi@oracle.com

 /*
  * Copyright (c) 1999, 2012, 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 "ci/ciSymbol.hpp"
 #include "ci/ciUtilities.hpp"
 #include "memory/oopFactory.hpp"
 // ------------------------------------------------------------------
 // ciSymbol::ciSymbol
 //
 // Preallocated symbol variant.  Used with symbols from vmSymbols.
 ciSymbol::ciSymbol(Symbol* s, vmSymbols::SID sid)
   : _symbol(s), _sid(sid)
 {
   assert(_symbol != NULL, "adding null symbol");
   _symbol->increment_refcount();  // increment ref count
   assert(sid_ok(), "must be in vmSymbols");
 }
 // Normal case for non-famous symbols.
 ciSymbol::ciSymbol(Symbol* s)
   : _symbol(s), _sid(vmSymbols::NO_SID)
 {
   assert(_symbol != NULL, "adding null symbol");
   _symbol->increment_refcount();  // increment ref count
   assert(sid_ok(), "must not be in vmSymbols");
 }
 // ciSymbol
 //
 // This class represents a Symbol* in the HotSpot virtual
 // machine.
 // ------------------------------------------------------------------
 // ciSymbol::as_utf8
 //
 // The text of the symbol as a null-terminated C string.
 const char* ciSymbol::as_utf8() {
   VM_QUICK_ENTRY_MARK;
   Symbol* s = get_symbol();
   return s->as_utf8();
 }
 // The text of the symbol as a null-terminated C string.
 const char* ciSymbol::as_quoted_ascii() {
   GUARDED_VM_QUICK_ENTRY(return get_symbol()->as_quoted_ascii();)
 }
 // ------------------------------------------------------------------
 // ciSymbol::base
 const jbyte* ciSymbol::base() {
   GUARDED_VM_ENTRY(return get_symbol()->base();)
 }
 // ------------------------------------------------------------------
 // ciSymbol::byte_at
 int ciSymbol::byte_at(int i) {
   GUARDED_VM_ENTRY(return get_symbol()->byte_at(i);)
 }
 // ------------------------------------------------------------------
 // ciSymbol::starts_with
 //
 // Tests if the symbol starts with the given prefix.
 bool ciSymbol::starts_with(const char* prefix, int len) const {
   GUARDED_VM_ENTRY(return get_symbol()->starts_with(prefix, len);)
 }
 bool ciSymbol::is_signature_polymorphic_name()  const {
   GUARDED_VM_ENTRY(return MethodHandles::is_signature_polymorphic_name(get_symbol());)
 }
 // ------------------------------------------------------------------
 // ciSymbol::index_of
 //
 // Determines where the symbol contains the given substring.
 int ciSymbol::index_of_at(int i, const char* str, int len) const {
   GUARDED_VM_ENTRY(return get_symbol()->index_of_at(i, str, len);)
 }
 // ------------------------------------------------------------------
 // ciSymbol::utf8_length
 int ciSymbol::utf8_length() {
   GUARDED_VM_ENTRY(return get_symbol()->utf8_length();)
 }
 // ------------------------------------------------------------------
 // ciSymbol::print_impl
 //
 // Implementation of the print method
 void ciSymbol::print_impl(outputStream* st) {
   st->print(" value=");
   print_symbol_on(st);
 }
 // ------------------------------------------------------------------
 // ciSymbol::print_symbol_on
 //
 // Print the value of this symbol on an outputStream
 void ciSymbol::print_symbol_on(outputStream *st) {
   GUARDED_VM_ENTRY(get_symbol()->print_symbol_on(st);)
 }
 // ------------------------------------------------------------------
 // ciSymbol::make_impl
 //
 // Make a ciSymbol from a C string (implementation).
 ciSymbol* ciSymbol::make_impl(const char* s) {
   EXCEPTION_CONTEXT;
   TempNewSymbol sym = SymbolTable::new_symbol(s, THREAD);
   if (HAS_PENDING_EXCEPTION) {
     CLEAR_PENDING_EXCEPTION;
     CURRENT_THREAD_ENV->record_out_of_memory_failure();
     return ciEnv::_unloaded_cisymbol;
   }
   return CURRENT_THREAD_ENV->get_symbol(sym);
 }
 // ------------------------------------------------------------------
 // ciSymbol::make
 //
 // Make a ciSymbol from a C string.
 ciSymbol* ciSymbol::make(const char* s) {
   GUARDED_VM_ENTRY(return make_impl(s);)
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/ci/ciSymbol.cpp@bd7a7ce2e264 (annotated)

src/share/vm/ci/ciSymbol.cpp