view src/share/vm/interpreter/templateInterpreterGenerator.hpp @ 452:00b023ae2d78

6722113: CMS: Incorrect overflow handling during precleaning of Reference lists Summary: When we encounter marking stack overflow during precleaning of Reference lists, we were using the overflow list mechanism, which can cause problems on account of mutating the mark word of the header because of conflicts with mutator accesses and updates of that field. Instead we should use the usual mechanism for overflow handling in concurrent phases, namely dirtying of the card on which the overflowed object lies. Since precleaning effectively does a form of discovered list processing, albeit with discovery enabled, we needed to adjust some code to be correct in the face of interleaved processing and discovery. Reviewed-by: apetrusenko, jcoomes
author ysr
date Thu, 20 Nov 2008 12:27:41 -0800
parents a61af66fc99e
children 98cb887364d3
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/*
 * Copyright 1997-2007 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 */

// This file contains the platform-independant parts
// of the template interpreter generator.

#ifndef CC_INTERP

class TemplateInterpreterGenerator: public AbstractInterpreterGenerator {
 protected:

  // entry points for shared code sequence
  address _unimplemented_bytecode;
  address _illegal_bytecode_sequence;

  // shared code sequences
  // Converter for native abi result to tosca result
  address generate_result_handler_for(BasicType type);
  address generate_slow_signature_handler();
  address generate_error_exit(const char* msg);
  address generate_StackOverflowError_handler();
  address generate_exception_handler(const char* name, const char* message) {
    return generate_exception_handler_common(name, message, false);
  }
  address generate_klass_exception_handler(const char* name) {
    return generate_exception_handler_common(name, NULL, true);
  }
  address generate_exception_handler_common(const char* name, const char* message, bool pass_oop);
  address generate_ClassCastException_handler();
  address generate_ArrayIndexOutOfBounds_handler(const char* name);
  address generate_continuation_for(TosState state);
  address generate_return_entry_for(TosState state, int step);
  address generate_earlyret_entry_for(TosState state);
  address generate_deopt_entry_for(TosState state, int step);
  address generate_safept_entry_for(TosState state, address runtime_entry);
  void    generate_throw_exception();

  // entry point generator
//   address generate_method_entry(AbstractInterpreter::MethodKind kind);

  // Instruction generation
  void generate_and_dispatch (Template* t, TosState tos_out = ilgl);
  void set_vtos_entry_points (Template* t, address& bep, address& cep, address& sep, address& aep, address& iep, address& lep, address& fep, address& dep, address& vep);
  void set_short_entry_points(Template* t, address& bep, address& cep, address& sep, address& aep, address& iep, address& lep, address& fep, address& dep, address& vep);
  void set_wide_entry_point  (Template* t, address& wep);

  void set_entry_points(Bytecodes::Code code);
  void set_unimplemented(int i);
  void set_entry_points_for_all_bytes();
  void set_safepoints_for_all_bytes();

  // Helpers for generate_and_dispatch
  address generate_trace_code(TosState state)   PRODUCT_RETURN0;
  void count_bytecode()                         PRODUCT_RETURN;
  void histogram_bytecode(Template* t)          PRODUCT_RETURN;
  void histogram_bytecode_pair(Template* t)     PRODUCT_RETURN;
  void trace_bytecode(Template* t)              PRODUCT_RETURN;
  void stop_interpreter_at()                    PRODUCT_RETURN;

  void generate_all();

 public:
  TemplateInterpreterGenerator(StubQueue* _code);

  #include "incls/_templateInterpreterGenerator_pd.hpp.incl"

};

#endif // !CC_INTERP