1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/src/share/vm/jfr/leakprofiler/chains/bitset.hpp Mon Aug 12 18:30:40 2019 +0300 1.3 @@ -0,0 +1,79 @@ 1.4 +/* 1.5 + * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved. 1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 1.7 + * 1.8 + * This code is free software; you can redistribute it and/or modify it 1.9 + * under the terms of the GNU General Public License version 2 only, as 1.10 + * published by the Free Software Foundation. 1.11 + * 1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT 1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1.15 + * version 2 for more details (a copy is included in the LICENSE file that 1.16 + * accompanied this code). 1.17 + * 1.18 + * You should have received a copy of the GNU General Public License version 1.19 + * 2 along with this work; if not, write to the Free Software Foundation, 1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1.21 + * 1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 1.23 + * or visit www.oracle.com if you need additional information or have any 1.24 + * questions. 1.25 + * 1.26 + */ 1.27 + 1.28 +#ifndef SHARE_VM_JFR_LEAKPROFILER_CHAINS_BITSET_HPP 1.29 +#define SHARE_VM_JFR_LEAKPROFILER_CHAINS_BITSET_HPP 1.30 + 1.31 +#include "memory/allocation.hpp" 1.32 +#include "oops/oopsHierarchy.hpp" 1.33 +#include "utilities/bitMap.inline.hpp" 1.34 + 1.35 +class JfrVirtualMemory; 1.36 +class MemRegion; 1.37 + 1.38 +class BitSet : public CHeapObj<mtTracing> { 1.39 + private: 1.40 + JfrVirtualMemory* _vmm; 1.41 + const HeapWord* const _region_start; 1.42 + BitMap _bits; 1.43 + const size_t _region_size; 1.44 + 1.45 + public: 1.46 + BitSet(const MemRegion& covered_region); 1.47 + ~BitSet(); 1.48 + 1.49 + bool initialize(); 1.50 + 1.51 + BitMap::idx_t mark_obj(const HeapWord* addr) { 1.52 + const BitMap::idx_t bit = addr_to_bit(addr); 1.53 + _bits.par_set_bit(bit); 1.54 + return bit; 1.55 + } 1.56 + 1.57 + BitMap::idx_t mark_obj(oop obj) { 1.58 + return mark_obj((HeapWord*)obj); 1.59 + } 1.60 + 1.61 + bool is_marked(const HeapWord* addr) const { 1.62 + return is_marked(addr_to_bit(addr)); 1.63 + } 1.64 + 1.65 + bool is_marked(oop obj) const { 1.66 + return is_marked((HeapWord*)obj); 1.67 + } 1.68 + 1.69 + BitMap::idx_t size() const { 1.70 + return _bits.size(); 1.71 + } 1.72 + 1.73 + BitMap::idx_t addr_to_bit(const HeapWord* addr) const { 1.74 + return pointer_delta(addr, _region_start) >> LogMinObjAlignment; 1.75 + } 1.76 + 1.77 + bool is_marked(const BitMap::idx_t bit) const { 1.78 + return _bits.at(bit); 1.79 + } 1.80 +}; 1.81 + 1.82 +#endif // SHARE_VM_JFR_LEAKPROFILER_CHAINS_BITSET_HPP