Mon, 19 Aug 2019 10:11:31 +0200
8229401: Fix JFR code cache test failures
8223689: Add JFR Thread Sampling Support
8223690: Add JFR BiasedLock Event Support
8223691: Add JFR G1 Region Type Change Event Support
8223692: Add JFR G1 Heap Summary Event Support
Summary: Backport JFR from JDK11, additional fixes
Reviewed-by: neugens, apetushkov
Contributed-by: denghui.ddh@alibaba-inc.com
tschatzl@7051 | 1 | /* |
azakharov@7835 | 2 | * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved. |
tschatzl@7051 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
tschatzl@7051 | 4 | * |
tschatzl@7051 | 5 | * This code is free software; you can redistribute it and/or modify it |
tschatzl@7051 | 6 | * under the terms of the GNU General Public License version 2 only, as |
tschatzl@7051 | 7 | * published by the Free Software Foundation. |
tschatzl@7051 | 8 | * |
tschatzl@7051 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
tschatzl@7051 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
tschatzl@7051 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
tschatzl@7051 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
tschatzl@7051 | 13 | * accompanied this code). |
tschatzl@7051 | 14 | * |
tschatzl@7051 | 15 | * You should have received a copy of the GNU General Public License version |
tschatzl@7051 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
tschatzl@7051 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
tschatzl@7051 | 18 | * |
tschatzl@7051 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
tschatzl@7051 | 20 | * or visit www.oracle.com if you need additional information or have any |
tschatzl@7051 | 21 | * questions. |
tschatzl@7051 | 22 | * |
tschatzl@7051 | 23 | */ |
tschatzl@7051 | 24 | |
tschatzl@7051 | 25 | #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1REGIONTOSPACEMAPPER_HPP |
tschatzl@7051 | 26 | #define SHARE_VM_GC_IMPLEMENTATION_G1_G1REGIONTOSPACEMAPPER_HPP |
tschatzl@7051 | 27 | |
tschatzl@7051 | 28 | #include "gc_implementation/g1/g1PageBasedVirtualSpace.hpp" |
tschatzl@7053 | 29 | #include "memory/allocation.hpp" |
tschatzl@7051 | 30 | #include "utilities/debug.hpp" |
tschatzl@7051 | 31 | |
tschatzl@7051 | 32 | class G1MappingChangedListener VALUE_OBJ_CLASS_SPEC { |
tschatzl@7051 | 33 | public: |
tschatzl@7051 | 34 | // Fired after commit of the memory, i.e. the memory this listener is registered |
tschatzl@7051 | 35 | // for can be accessed. |
tschatzl@7257 | 36 | // Zero_filled indicates that the memory can be considered as filled with zero bytes |
tschatzl@7257 | 37 | // when called. |
tschatzl@7257 | 38 | virtual void on_commit(uint start_idx, size_t num_regions, bool zero_filled) = 0; |
tschatzl@7051 | 39 | }; |
tschatzl@7051 | 40 | |
tschatzl@7051 | 41 | // Maps region based commit/uncommit requests to the underlying page sized virtual |
tschatzl@7051 | 42 | // space. |
tschatzl@7051 | 43 | class G1RegionToSpaceMapper : public CHeapObj<mtGC> { |
tschatzl@7051 | 44 | private: |
tschatzl@7051 | 45 | G1MappingChangedListener* _listener; |
tschatzl@7051 | 46 | protected: |
tschatzl@7051 | 47 | // Backing storage. |
tschatzl@7051 | 48 | G1PageBasedVirtualSpace _storage; |
tschatzl@7781 | 49 | |
tschatzl@7051 | 50 | size_t _region_granularity; |
tschatzl@7051 | 51 | // Mapping management |
tschatzl@7051 | 52 | BitMap _commit_map; |
tschatzl@7051 | 53 | |
tschatzl@7781 | 54 | G1RegionToSpaceMapper(ReservedSpace rs, size_t used_size, size_t page_size, size_t region_granularity, MemoryType type); |
tschatzl@7051 | 55 | |
tschatzl@7257 | 56 | void fire_on_commit(uint start_idx, size_t num_regions, bool zero_filled); |
tschatzl@7051 | 57 | public: |
tschatzl@7051 | 58 | MemRegion reserved() { return _storage.reserved(); } |
tschatzl@7051 | 59 | |
azakharov@7835 | 60 | size_t reserved_size() { return _storage.reserved_size(); } |
azakharov@7835 | 61 | size_t committed_size() { return _storage.committed_size(); } |
azakharov@7835 | 62 | |
tschatzl@7051 | 63 | void set_mapping_changed_listener(G1MappingChangedListener* listener) { _listener = listener; } |
tschatzl@7051 | 64 | |
tschatzl@7051 | 65 | virtual ~G1RegionToSpaceMapper() { |
tschatzl@7051 | 66 | _commit_map.resize(0, /* in_resource_area */ false); |
tschatzl@7051 | 67 | } |
tschatzl@7051 | 68 | |
tschatzl@7051 | 69 | bool is_committed(uintptr_t idx) const { |
tschatzl@7051 | 70 | return _commit_map.at(idx); |
tschatzl@7051 | 71 | } |
tschatzl@7051 | 72 | |
tschatzl@7781 | 73 | virtual void commit_regions(uint start_idx, size_t num_regions = 1) = 0; |
tschatzl@7781 | 74 | virtual void uncommit_regions(uint start_idx, size_t num_regions = 1) = 0; |
tschatzl@7051 | 75 | |
tschatzl@7051 | 76 | // Creates an appropriate G1RegionToSpaceMapper for the given parameters. |
tschatzl@7781 | 77 | // The actual space to be used within the given reservation is given by actual_size. |
tschatzl@7781 | 78 | // This is because some OSes need to round up the reservation size to guarantee |
tschatzl@7781 | 79 | // alignment of page_size. |
tschatzl@7051 | 80 | // The byte_translation_factor defines how many bytes in a region correspond to |
tschatzl@7051 | 81 | // a single byte in the data structure this mapper is for. |
tschatzl@7051 | 82 | // Eg. in the card table, this value corresponds to the size a single card |
tschatzl@7781 | 83 | // table entry corresponds to in the heap. |
tschatzl@7051 | 84 | static G1RegionToSpaceMapper* create_mapper(ReservedSpace rs, |
tschatzl@7781 | 85 | size_t actual_size, |
tschatzl@7781 | 86 | size_t page_size, |
tschatzl@7051 | 87 | size_t region_granularity, |
tschatzl@7051 | 88 | size_t byte_translation_factor, |
tschatzl@7051 | 89 | MemoryType type); |
tschatzl@7051 | 90 | }; |
tschatzl@7051 | 91 | |
tschatzl@7051 | 92 | #endif /* SHARE_VM_GC_IMPLEMENTATION_G1_G1REGIONTOSPACEMAPPER_HPP */ |