Mercurial > hg > graal-jvmci-8
view src/share/vm/gc_implementation/parallelScavenge/asPSYoungGen.hpp @ 615:c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
Summary: Call newly created CollectedHeap::dump_{pre,post}_full_gc before and after every stop-world full collection cycle on GenCollectedHeap and ParallelScavengeHeap. (Support for G1CollectedHeap forthcoming under CR 6810861.) Small modifications to existing heap dumping and class histogram implementation, especially to allow multiple on-the-fly histos/dumps by the VM thread during a single safepoint.
Reviewed-by: jmasa, alanb, mchung
author | ysr |
---|---|
date | Mon, 02 Mar 2009 16:37:04 -0800 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ class ASPSYoungGen : public PSYoungGen { friend class VMStructs; private: size_t _gen_size_limit; protected: virtual size_t available_to_live(); public: ASPSYoungGen(size_t initial_byte_size, size_t minimum_byte_size, size_t byte_size_limit); ASPSYoungGen(PSVirtualSpace* vs, size_t initial_byte_size, size_t minimum_byte_size, size_t byte_size_limit); void initialize(ReservedSpace rs, size_t alignment); void initialize_virtual_space(ReservedSpace rs, size_t alignment); size_t gen_size_limit() { return _gen_size_limit; } void set_gen_size_limit(size_t v) { _gen_size_limit = v; } bool resize_generation(size_t eden_size, size_t survivor_size); void resize_spaces(size_t eden_size, size_t survivor_size); // Adjust eden to be consistent with the virtual space. void reset_after_change(); // Adaptive size policy support // Return number of bytes that the generation can expand/contract. size_t available_for_expansion(); size_t available_for_contraction(); // Accessors void set_reserved(MemRegion v) { _reserved = v; } // Printing support virtual const char* short_name() const { return "ASPSYoungGen"; } };