Mercurial > hg > truffle
view src/share/vm/gc_implementation/parNew/asParNewGeneration.hpp @ 15063:36e1a11a72b3
new StackIntrospection interface to allow access to stack contents
author | Lukas Stadler <lukas.stadler@oracle.com> |
---|---|
date | Fri, 11 Apr 2014 11:52:19 +0200 |
parents | f95d63e2154a |
children |
line wrap: on
line source
/* * Copyright (c) 2005, 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_GC_IMPLEMENTATION_PARNEW_ASPARNEWGENERATION_HPP #define SHARE_VM_GC_IMPLEMENTATION_PARNEW_ASPARNEWGENERATION_HPP #include "gc_implementation/parNew/parNewGeneration.hpp" #include "gc_implementation/shared/adaptiveSizePolicy.hpp" // A Generation that does parallel young-gen collection extended // for adaptive size policy. // Division of generation into spaces // done by DefNewGeneration::compute_space_boundaries() // +---------------+ // | uncommitted | // |---------------| // | ss0 | // |---------------| // | ss1 | // |---------------| // | | // | eden | // | | // +---------------+ <-- low end of VirtualSpace // class ASParNewGeneration: public ParNewGeneration { size_t _min_gen_size; // Resize the generation based on the desired sizes of // the constituent spaces. bool resize_generation(size_t eden_size, size_t survivor_size); // Resize the spaces based on their desired sizes but // respecting the maximum size of the generation. void resize_spaces(size_t eden_size, size_t survivor_size); // Return the byte size remaining to the minimum generation size. size_t available_to_min_gen(); // Return the byte size remaining to the live data in the generation. size_t available_to_live() const; // Return the byte size that the generation is allowed to shrink. size_t limit_gen_shrink(size_t bytes); // Reset the size of the spaces after a shrink of the generation. void reset_survivors_after_shrink(); // Accessor VirtualSpace* virtual_space() { return &_virtual_space; } virtual void adjust_desired_tenuring_threshold(); public: ASParNewGeneration(ReservedSpace rs, size_t initial_byte_size, size_t min_byte_size, int level); virtual const char* short_name() const { return "ASParNew"; } virtual const char* name() const; virtual Generation::Name kind() { return ASParNew; } // Change the sizes of eden and the survivor spaces in // the generation. The parameters are desired sizes // and are not guaranteed to be met. For example, if // the total is larger than the generation. void resize(size_t eden_size, size_t survivor_size); virtual void compute_new_size(); size_t max_gen_size() { return _reserved.byte_size(); } size_t min_gen_size() const { return _min_gen_size; } // Space boundary invariant checker void space_invariants() PRODUCT_RETURN; }; #endif // SHARE_VM_GC_IMPLEMENTATION_PARNEW_ASPARNEWGENERATION_HPP