Mercurial > hg > graal-compiler
view src/share/vm/gc_implementation/parallelScavenge/adjoiningVirtualSpaces.cpp @ 11809:c7769440afd8
improve NodeUtil.cloneNode.
author | Andreas Woess <andreas.woess@jku.at> |
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date | Wed, 25 Sep 2013 17:34:01 +0200 |
parents | db8a7163c682 |
children |
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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. * */ #include "precompiled.hpp" #include "gc_implementation/parallelScavenge/adjoiningVirtualSpaces.hpp" #include "memory/allocation.inline.hpp" #include "runtime/java.hpp" AdjoiningVirtualSpaces::AdjoiningVirtualSpaces(ReservedSpace rs, size_t min_low_byte_size, size_t min_high_byte_size, size_t alignment) : _reserved_space(rs), _min_low_byte_size(min_low_byte_size), _min_high_byte_size(min_high_byte_size), _low(0), _high(0), _alignment(alignment) {} // The maximum byte sizes are for the initial layout of the // virtual spaces and are not the limit on the maximum bytes sizes. void AdjoiningVirtualSpaces::initialize(size_t max_low_byte_size, size_t init_low_byte_size, size_t init_high_byte_size) { // The reserved spaces for the two parts of the virtual space. ReservedSpace old_rs = _reserved_space.first_part(max_low_byte_size); ReservedSpace young_rs = _reserved_space.last_part(max_low_byte_size); _low = new PSVirtualSpace(old_rs, alignment()); if (!_low->expand_by(init_low_byte_size)) { vm_exit_during_initialization("Could not reserve enough space for " "object heap"); } _high = new PSVirtualSpaceHighToLow(young_rs, alignment()); if (!_high->expand_by(init_high_byte_size)) { vm_exit_during_initialization("Could not reserve enough space for " "object heap"); } } bool AdjoiningVirtualSpaces::adjust_boundary_up(size_t change_in_bytes) { assert(UseAdaptiveSizePolicy && UseAdaptiveGCBoundary, "runtime check"); size_t actual_change = low()->expand_into(high(), change_in_bytes); return actual_change != 0; } bool AdjoiningVirtualSpaces::adjust_boundary_down(size_t change_in_bytes) { assert(UseAdaptiveSizePolicy && UseAdaptiveGCBoundary, "runtime check"); size_t actual_change = high()->expand_into(low(), change_in_bytes); return actual_change != 0; }