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6484982: G1: process references during evacuation pauses Summary: G1 now uses two reference processors - one is used by concurrent marking and the other is used by STW GCs (both full and incremental evacuation pauses). In an evacuation pause, the reference processor is embedded into the closures used to scan objects. Doing so causes causes reference objects to be 'discovered' by the reference processor. At the end of the evacuation pause, these discovered reference objects are processed - preserving (and copying) referent objects (and their reachable graphs) as appropriate. Reviewed-by: ysr, jwilhelm, brutisso, stefank, tonyp
author johnc
date Thu, 22 Sep 2011 10:57:37 -0700
parents f95d63e2154a
children 763f01599ff4
line wrap: on
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/*
 * Copyright (c) 2003, 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.
 *
 */

#ifndef SHARE_VM_RUNTIME_GLOBALS_EXTENSION_HPP
#define SHARE_VM_RUNTIME_GLOBALS_EXTENSION_HPP

#include "runtime/globals.hpp"
#include "utilities/top.hpp"

// Construct enum of Flag_<cmdline-arg> constants.

// Parens left off in the following for the enum decl below.
#define FLAG_MEMBER(flag) Flag_##flag

#define RUNTIME_PRODUCT_FLAG_MEMBER(type, name, value, doc)    FLAG_MEMBER(name),
#define RUNTIME_PD_PRODUCT_FLAG_MEMBER(type, name, doc)        FLAG_MEMBER(name),
#define RUNTIME_DIAGNOSTIC_FLAG_MEMBER(type, name, value, doc) FLAG_MEMBER(name),
#define RUNTIME_EXPERIMENTAL_FLAG_MEMBER(type, name, value, doc) FLAG_MEMBER(name),
#define RUNTIME_MANAGEABLE_FLAG_MEMBER(type, name, value, doc) FLAG_MEMBER(name),
#define RUNTIME_PRODUCT_RW_FLAG_MEMBER(type, name, value, doc) FLAG_MEMBER(name),
#ifdef PRODUCT
  #define RUNTIME_DEVELOP_FLAG_MEMBER(type, name, value, doc)  /* flag is constant */
  #define RUNTIME_PD_DEVELOP_FLAG_MEMBER(type, name, doc)      /* flag is constant */
  #define RUNTIME_NOTPRODUCT_FLAG_MEMBER(type, name, value, doc)
#else
  #define RUNTIME_DEVELOP_FLAG_MEMBER(type, name, value, doc)  FLAG_MEMBER(name),
  #define RUNTIME_PD_DEVELOP_FLAG_MEMBER(type, name, doc)      FLAG_MEMBER(name),
  #define RUNTIME_NOTPRODUCT_FLAG_MEMBER(type, name, value, doc) FLAG_MEMBER(name),
#endif
#ifdef _LP64
#define RUNTIME_LP64_PRODUCT_FLAG_MEMBER(type, name, value, doc)    FLAG_MEMBER(name),
#else
#define RUNTIME_LP64_PRODUCT_FLAG_MEMBER(type, name, value, doc)    /* flag is constant */
#endif // _LP64

#define C1_PRODUCT_FLAG_MEMBER(type, name, value, doc)         FLAG_MEMBER(name),
#define C1_PD_PRODUCT_FLAG_MEMBER(type, name, doc)             FLAG_MEMBER(name),
#ifdef PRODUCT
  #define C1_DEVELOP_FLAG_MEMBER(type, name, value, doc)       /* flag is constant */
  #define C1_PD_DEVELOP_FLAG_MEMBER(type, name, doc)           /* flag is constant */
  #define C1_NOTPRODUCT_FLAG_MEMBER(type, name, value, doc)
#else
  #define C1_DEVELOP_FLAG_MEMBER(type, name, value, doc)       FLAG_MEMBER(name),
  #define C1_PD_DEVELOP_FLAG_MEMBER(type, name, doc)           FLAG_MEMBER(name),
  #define C1_NOTPRODUCT_FLAG_MEMBER(type, name, value, doc)    FLAG_MEMBER(name),
#endif


#define C2_PRODUCT_FLAG_MEMBER(type, name, value, doc)         FLAG_MEMBER(name),
#define C2_PD_PRODUCT_FLAG_MEMBER(type, name, doc)             FLAG_MEMBER(name),
#define C2_DIAGNOSTIC_FLAG_MEMBER(type, name, value, doc)      FLAG_MEMBER(name),
#define C2_EXPERIMENTAL_FLAG_MEMBER(type, name, value, doc)    FLAG_MEMBER(name),
#ifdef PRODUCT
  #define C2_DEVELOP_FLAG_MEMBER(type, name, value, doc)       /* flag is constant */
  #define C2_PD_DEVELOP_FLAG_MEMBER(type, name, doc)           /* flag is constant */
  #define C2_NOTPRODUCT_FLAG_MEMBER(type, name, value, doc)
#else
  #define C2_DEVELOP_FLAG_MEMBER(type, name, value, doc)       FLAG_MEMBER(name),
  #define C2_PD_DEVELOP_FLAG_MEMBER(type, name, doc)           FLAG_MEMBER(name),
  #define C2_NOTPRODUCT_FLAG_MEMBER(type, name, value, doc)    FLAG_MEMBER(name),
#endif

typedef enum {
 RUNTIME_FLAGS(RUNTIME_DEVELOP_FLAG_MEMBER, RUNTIME_PD_DEVELOP_FLAG_MEMBER, RUNTIME_PRODUCT_FLAG_MEMBER, RUNTIME_PD_PRODUCT_FLAG_MEMBER, RUNTIME_DIAGNOSTIC_FLAG_MEMBER, RUNTIME_EXPERIMENTAL_FLAG_MEMBER, RUNTIME_NOTPRODUCT_FLAG_MEMBER, RUNTIME_MANAGEABLE_FLAG_MEMBER, RUNTIME_PRODUCT_RW_FLAG_MEMBER, RUNTIME_LP64_PRODUCT_FLAG_MEMBER)
 RUNTIME_OS_FLAGS(RUNTIME_DEVELOP_FLAG_MEMBER, RUNTIME_PD_DEVELOP_FLAG_MEMBER, RUNTIME_PRODUCT_FLAG_MEMBER, RUNTIME_PD_PRODUCT_FLAG_MEMBER, RUNTIME_DIAGNOSTIC_FLAG_MEMBER, RUNTIME_NOTPRODUCT_FLAG_MEMBER)
#ifndef KERNEL
 G1_FLAGS(RUNTIME_DEVELOP_FLAG_MEMBER, RUNTIME_PD_DEVELOP_FLAG_MEMBER, RUNTIME_PRODUCT_FLAG_MEMBER, RUNTIME_PD_PRODUCT_FLAG_MEMBER, RUNTIME_DIAGNOSTIC_FLAG_MEMBER, RUNTIME_EXPERIMENTAL_FLAG_MEMBER, RUNTIME_NOTPRODUCT_FLAG_MEMBER, RUNTIME_MANAGEABLE_FLAG_MEMBER, RUNTIME_PRODUCT_RW_FLAG_MEMBER)
#endif
#ifdef COMPILER1
 C1_FLAGS(C1_DEVELOP_FLAG_MEMBER, C1_PD_DEVELOP_FLAG_MEMBER, C1_PRODUCT_FLAG_MEMBER, C1_PD_PRODUCT_FLAG_MEMBER, C1_NOTPRODUCT_FLAG_MEMBER)
#endif
#ifdef COMPILER2
 C2_FLAGS(C2_DEVELOP_FLAG_MEMBER, C2_PD_DEVELOP_FLAG_MEMBER, C2_PRODUCT_FLAG_MEMBER, C2_PD_PRODUCT_FLAG_MEMBER, C2_DIAGNOSTIC_FLAG_MEMBER, C2_EXPERIMENTAL_FLAG_MEMBER, C2_NOTPRODUCT_FLAG_MEMBER)
#endif
 NUM_CommandLineFlag
} CommandLineFlag;

// Construct enum of Flag_<cmdline-arg>_<type> constants.

#define FLAG_MEMBER_WITH_TYPE(flag,type) Flag_##flag##_##type

#define RUNTIME_PRODUCT_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)    FLAG_MEMBER_WITH_TYPE(name,type),
#define RUNTIME_PD_PRODUCT_FLAG_MEMBER_WITH_TYPE(type, name, doc)        FLAG_MEMBER_WITH_TYPE(name,type),
#define RUNTIME_DIAGNOSTIC_FLAG_MEMBER_WITH_TYPE(type, name, value, doc) FLAG_MEMBER_WITH_TYPE(name,type),
#define RUNTIME_EXPERIMENTAL_FLAG_MEMBER_WITH_TYPE(type, name, value, doc) FLAG_MEMBER_WITH_TYPE(name,type),
#define RUNTIME_MANAGEABLE_FLAG_MEMBER_WITH_TYPE(type, name, value, doc) FLAG_MEMBER_WITH_TYPE(name,type),
#define RUNTIME_PRODUCT_RW_FLAG_MEMBER_WITH_TYPE(type, name, value, doc) FLAG_MEMBER_WITH_TYPE(name,type),
#ifdef PRODUCT
  #define RUNTIME_DEVELOP_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)     /* flag is constant */
  #define RUNTIME_PD_DEVELOP_FLAG_MEMBER_WITH_TYPE(type, name, doc)         /* flag is constant */
  #define RUNTIME_NOTPRODUCT_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)
#else
  #define RUNTIME_DEVELOP_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)     FLAG_MEMBER_WITH_TYPE(name,type),
  #define RUNTIME_PD_DEVELOP_FLAG_MEMBER_WITH_TYPE(type, name, doc)         FLAG_MEMBER_WITH_TYPE(name,type),
  #define RUNTIME_NOTPRODUCT_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)  FLAG_MEMBER_WITH_TYPE(name,type),
#endif

#define C1_PRODUCT_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)         FLAG_MEMBER_WITH_TYPE(name,type),
#define C1_PD_PRODUCT_FLAG_MEMBER_WITH_TYPE(type, name, doc)             FLAG_MEMBER_WITH_TYPE(name,type),
#ifdef PRODUCT
  #define C1_DEVELOP_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)       /* flag is constant */
  #define C1_PD_DEVELOP_FLAG_MEMBER_WITH_TYPE(type, name, doc)           /* flag is constant */
  #define C1_NOTPRODUCT_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)
#else
  #define C1_DEVELOP_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)       FLAG_MEMBER_WITH_TYPE(name,type),
  #define C1_PD_DEVELOP_FLAG_MEMBER_WITH_TYPE(type, name, doc)           FLAG_MEMBER_WITH_TYPE(name,type),
  #define C1_NOTPRODUCT_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)    FLAG_MEMBER_WITH_TYPE(name,type),
#endif
#ifdef _LP64
#define RUNTIME_LP64_PRODUCT_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)    FLAG_MEMBER_WITH_TYPE(name,type),
#else
#define RUNTIME_LP64_PRODUCT_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)    /* flag is constant */
#endif // _LP64


#define C2_PRODUCT_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)         FLAG_MEMBER_WITH_TYPE(name,type),
#define C2_PD_PRODUCT_FLAG_MEMBER_WITH_TYPE(type, name, doc)             FLAG_MEMBER_WITH_TYPE(name,type),
#define C2_DIAGNOSTIC_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)      FLAG_MEMBER_WITH_TYPE(name,type),
#define C2_EXPERIMENTAL_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)      FLAG_MEMBER_WITH_TYPE(name,type),
#ifdef PRODUCT
  #define C2_DEVELOP_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)       /* flag is constant */
  #define C2_PD_DEVELOP_FLAG_MEMBER_WITH_TYPE(type, name, doc)           /* flag is constant */
  #define C2_NOTPRODUCT_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)
#else
  #define C2_DEVELOP_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)       FLAG_MEMBER_WITH_TYPE(name,type),
  #define C2_PD_DEVELOP_FLAG_MEMBER_WITH_TYPE(type, name, doc)           FLAG_MEMBER_WITH_TYPE(name,type),
  #define C2_NOTPRODUCT_FLAG_MEMBER_WITH_TYPE(type, name, value, doc)    FLAG_MEMBER_WITH_TYPE(name,type),
#endif

typedef enum {
 RUNTIME_FLAGS(RUNTIME_DEVELOP_FLAG_MEMBER_WITH_TYPE,
               RUNTIME_PD_DEVELOP_FLAG_MEMBER_WITH_TYPE,
               RUNTIME_PRODUCT_FLAG_MEMBER_WITH_TYPE,
               RUNTIME_PD_PRODUCT_FLAG_MEMBER_WITH_TYPE,
               RUNTIME_DIAGNOSTIC_FLAG_MEMBER_WITH_TYPE,
               RUNTIME_EXPERIMENTAL_FLAG_MEMBER_WITH_TYPE,
               RUNTIME_NOTPRODUCT_FLAG_MEMBER_WITH_TYPE,
               RUNTIME_MANAGEABLE_FLAG_MEMBER_WITH_TYPE,
               RUNTIME_PRODUCT_RW_FLAG_MEMBER_WITH_TYPE,
               RUNTIME_LP64_PRODUCT_FLAG_MEMBER_WITH_TYPE)
 RUNTIME_OS_FLAGS(RUNTIME_DEVELOP_FLAG_MEMBER_WITH_TYPE,
                  RUNTIME_PD_DEVELOP_FLAG_MEMBER_WITH_TYPE,
                  RUNTIME_PRODUCT_FLAG_MEMBER_WITH_TYPE,
                  RUNTIME_PD_PRODUCT_FLAG_MEMBER_WITH_TYPE,
                  RUNTIME_DIAGNOSTIC_FLAG_MEMBER_WITH_TYPE,
                  RUNTIME_NOTPRODUCT_FLAG_MEMBER_WITH_TYPE)
#ifndef KERNEL
 G1_FLAGS(RUNTIME_DEVELOP_FLAG_MEMBER_WITH_TYPE,
          RUNTIME_PD_DEVELOP_FLAG_MEMBER_WITH_TYPE,
          RUNTIME_PRODUCT_FLAG_MEMBER_WITH_TYPE,
          RUNTIME_PD_PRODUCT_FLAG_MEMBER_WITH_TYPE,
          RUNTIME_DIAGNOSTIC_FLAG_MEMBER_WITH_TYPE,
          RUNTIME_EXPERIMENTAL_FLAG_MEMBER_WITH_TYPE,
          RUNTIME_NOTPRODUCT_FLAG_MEMBER_WITH_TYPE,
          RUNTIME_MANAGEABLE_FLAG_MEMBER_WITH_TYPE,
          RUNTIME_PRODUCT_RW_FLAG_MEMBER_WITH_TYPE)
#endif // KERNEL
#ifdef COMPILER1
 C1_FLAGS(C1_DEVELOP_FLAG_MEMBER_WITH_TYPE,
          C1_PD_DEVELOP_FLAG_MEMBER_WITH_TYPE,
          C1_PRODUCT_FLAG_MEMBER_WITH_TYPE,
          C1_PD_PRODUCT_FLAG_MEMBER_WITH_TYPE,
          C1_NOTPRODUCT_FLAG_MEMBER_WITH_TYPE)
#endif
#ifdef COMPILER2
 C2_FLAGS(C2_DEVELOP_FLAG_MEMBER_WITH_TYPE,
          C2_PD_DEVELOP_FLAG_MEMBER_WITH_TYPE,
          C2_PRODUCT_FLAG_MEMBER_WITH_TYPE,
          C2_PD_PRODUCT_FLAG_MEMBER_WITH_TYPE,
          C2_DIAGNOSTIC_FLAG_MEMBER_WITH_TYPE,
          C2_EXPERIMENTAL_FLAG_MEMBER_WITH_TYPE,
          C2_NOTPRODUCT_FLAG_MEMBER_WITH_TYPE)
#endif
 NUM_CommandLineFlagWithType
} CommandLineFlagWithType;

#define FLAG_IS_DEFAULT(name)         (CommandLineFlagsEx::is_default(FLAG_MEMBER(name)))
#define FLAG_IS_ERGO(name)            (CommandLineFlagsEx::is_ergo(FLAG_MEMBER(name)))
#define FLAG_IS_CMDLINE(name)         (CommandLineFlagsEx::is_cmdline(FLAG_MEMBER(name)))

#define FLAG_SET_DEFAULT(name, value) ((name) = (value))

#define FLAG_SET_CMDLINE(type, name, value) (CommandLineFlagsEx::type##AtPut(FLAG_MEMBER_WITH_TYPE(name,type), (type)(value), COMMAND_LINE))
#define FLAG_SET_ERGO(type, name, value)    (CommandLineFlagsEx::type##AtPut(FLAG_MEMBER_WITH_TYPE(name,type), (type)(value), ERGONOMIC))

// Can't put the following in CommandLineFlags because
// of a circular dependency on the enum definition.
class CommandLineFlagsEx : CommandLineFlags {
 public:
  static void boolAtPut(CommandLineFlagWithType flag, bool value, FlagValueOrigin origin);
  static void intxAtPut(CommandLineFlagWithType flag, intx value, FlagValueOrigin origin);
  static void uintxAtPut(CommandLineFlagWithType flag, uintx value, FlagValueOrigin origin);
  static void uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, FlagValueOrigin origin);
  static void doubleAtPut(CommandLineFlagWithType flag, double value, FlagValueOrigin origin);
  static void ccstrAtPut(CommandLineFlagWithType flag, ccstr value, FlagValueOrigin origin);

  static bool is_default(CommandLineFlag flag);
  static bool is_ergo(CommandLineFlag flag);
  static bool is_cmdline(CommandLineFlag flag);
};

#endif // SHARE_VM_RUNTIME_GLOBALS_EXTENSION_HPP