1 /*
   2  * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 # include "incls/_precompiled.incl"
  26 # include "incls/_adjoiningVirtualSpaces.cpp.incl"

  27 
  28 AdjoiningVirtualSpaces::AdjoiningVirtualSpaces(ReservedSpace rs,
  29                                                size_t min_low_byte_size,
  30                                                size_t min_high_byte_size,
  31                                                size_t alignment) :
  32   _reserved_space(rs), _min_low_byte_size(min_low_byte_size),
  33   _min_high_byte_size(min_high_byte_size), _low(0), _high(0),
  34   _alignment(alignment) {}
  35 
  36 // The maximum byte sizes are for the initial layout of the
  37 // virtual spaces and are not the limit on the maximum bytes sizes.
  38 void AdjoiningVirtualSpaces::initialize(size_t max_low_byte_size,
  39                                         size_t init_low_byte_size,
  40                                         size_t init_high_byte_size) {
  41 
  42   // The reserved spaces for the two parts of the virtual space.
  43   ReservedSpace old_rs   = _reserved_space.first_part(max_low_byte_size);
  44   ReservedSpace young_rs = _reserved_space.last_part(max_low_byte_size);
  45 
  46   _low = new PSVirtualSpace(old_rs, alignment());

   1 /*
   2  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "gc_implementation/parallelScavenge/adjoiningVirtualSpaces.hpp"
  27 #include "runtime/java.hpp"
  28 
  29 AdjoiningVirtualSpaces::AdjoiningVirtualSpaces(ReservedSpace rs,
  30                                                size_t min_low_byte_size,
  31                                                size_t min_high_byte_size,
  32                                                size_t alignment) :
  33   _reserved_space(rs), _min_low_byte_size(min_low_byte_size),
  34   _min_high_byte_size(min_high_byte_size), _low(0), _high(0),
  35   _alignment(alignment) {}
  36 
  37 // The maximum byte sizes are for the initial layout of the
  38 // virtual spaces and are not the limit on the maximum bytes sizes.
  39 void AdjoiningVirtualSpaces::initialize(size_t max_low_byte_size,
  40                                         size_t init_low_byte_size,
  41                                         size_t init_high_byte_size) {
  42 
  43   // The reserved spaces for the two parts of the virtual space.
  44   ReservedSpace old_rs   = _reserved_space.first_part(max_low_byte_size);
  45   ReservedSpace young_rs = _reserved_space.last_part(max_low_byte_size);
  46 
  47   _low = new PSVirtualSpace(old_rs, alignment());