view src/cpu/sparc/vm/c1_MacroAssembler_sparc.hpp @ 2368:dde920245681

6896099: Integrate CMS heap ergo with default heap sizing ergo 6627787: CMS: JVM refuses to start up with -Xms16m -Xmx16m 7000125: CMS: Anti-monotone young gen sizing with respect to maximum whole heap size specification 7027529: CMS: retire CMSUseOldDefaults flag Summary: Simplify CMS heap sizing code, relying on ergonomic initial sizing consistent with other collectors for the most part, controlling only young gen sizing to rein in pause times. Make CMS young gen sizing default statically cpu-dependant. Remove inconsistencies wrt generation sizing and policy code, allowing for the fixing for 6627787 and 7000125. For 7027529, retire the flag CMSUseOldDefaults which had been introduced as a bridge from JDK 5 to JDK 6 a number of years ago. Reviewed-by: brutisso, poonam
author ysr
date Wed, 16 Mar 2011 10:37:08 -0700
parents b1a2afa37ec4
children
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/*
 * Copyright (c) 1999, 2011, 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 CPU_SPARC_VM_C1_MACROASSEMBLER_SPARC_HPP
#define CPU_SPARC_VM_C1_MACROASSEMBLER_SPARC_HPP

  void pd_init() { /* nothing to do */ }

 public:
   void try_allocate(
    Register obj,                      // result: pointer to object after successful allocation
    Register var_size_in_bytes,        // object size in bytes if unknown at compile time; invalid otherwise
    int      con_size_in_bytes,        // object size in bytes if   known at compile time
    Register t1,                       // temp register
    Register t2,                       // temp register
    Label&   slow_case                 // continuation point if fast allocation fails
  );

  void initialize_header(Register obj, Register klass, Register len, Register t1, Register t2);
  void initialize_body(Register base, Register index);

  // locking/unlocking
  void lock_object  (Register Rmark, Register Roop, Register Rbox, Register Rscratch, Label& slow_case);
  void unlock_object(Register Rmark, Register Roop, Register Rbox,                    Label& slow_case);

  void initialize_object(
    Register obj,                      // result: pointer to object after successful allocation
    Register klass,                    // object klass
    Register var_size_in_bytes,        // object size in bytes if unknown at compile time; invalid otherwise
    int      con_size_in_bytes,        // object size in bytes if   known at compile time
    Register t1,                       // temp register
    Register t2                        // temp register
  );

  // allocation of fixed-size objects
  // (can also be used to allocate fixed-size arrays, by setting
  // hdr_size correctly and storing the array length afterwards)
  void allocate_object(
    Register obj,                      // result: pointer to object after successful allocation
    Register t1,                       // temp register
    Register t2,                       // temp register
    Register t3,                       // temp register
    int      hdr_size,                 // object header size in words
    int      obj_size,                 // object size in words
    Register klass,                    // object klass
    Label&   slow_case                 // continuation point if fast allocation fails
  );

  enum {
    max_array_allocation_length = 0x01000000 // sparc friendly value, requires sethi only
  };

  // allocation of arrays
  void allocate_array(
    Register obj,                      // result: pointer to array after successful allocation
    Register len,                      // array length
    Register t1,                       // temp register
    Register t2,                       // temp register
    Register t3,                       // temp register
    int      hdr_size,                 // object header size in words
    int      elt_size,                 // element size in bytes
    Register klass,                    // object klass
    Label&   slow_case                 // continuation point if fast allocation fails
  );

  // invalidates registers in this window
  void invalidate_registers(bool iregisters, bool lregisters, bool oregisters,
                            Register preserve1 = noreg, Register preserve2 = noreg);

#endif // CPU_SPARC_VM_C1_MACROASSEMBLER_SPARC_HPP