Mercurial > hg > graal-jvmci-8
annotate src/share/vm/gc_implementation/g1/g1RegionToSpaceMapper.hpp @ 22977:33e421924c67
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
Summary: Allow use of large pages for auxiliary data structures in G1. Clean up existing interfaces.
Reviewed-by: jmasa, pliden, stefank
| author | tschatzl |
|---|---|
| date | Tue, 07 Apr 2015 10:53:51 +0200 |
| parents | e7d0505c8a30 |
| children | e5406a79ae90 |
| rev | line source |
|---|---|
| 20337 | 1 /* |
| 2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1REGIONTOSPACEMAPPER_HPP | |
| 26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1REGIONTOSPACEMAPPER_HPP | |
| 27 | |
| 28 #include "gc_implementation/g1/g1PageBasedVirtualSpace.hpp" | |
|
20339
7b2fc3129653
8055635: Missing include in g1RegionToSpaceMapper.hpp results in unresolved symbol of fastdebug build without precompiled headers
tschatzl
parents:
20337
diff
changeset
|
29 #include "memory/allocation.hpp" |
| 20337 | 30 #include "utilities/debug.hpp" |
| 31 | |
| 32 class G1MappingChangedListener VALUE_OBJ_CLASS_SPEC { | |
| 33 public: | |
| 34 // Fired after commit of the memory, i.e. the memory this listener is registered | |
| 35 // for can be accessed. | |
| 20543 | 36 // Zero_filled indicates that the memory can be considered as filled with zero bytes |
| 37 // when called. | |
| 38 virtual void on_commit(uint start_idx, size_t num_regions, bool zero_filled) = 0; | |
| 20337 | 39 }; |
| 40 | |
| 41 // Maps region based commit/uncommit requests to the underlying page sized virtual | |
| 42 // space. | |
| 43 class G1RegionToSpaceMapper : public CHeapObj<mtGC> { | |
| 44 private: | |
| 45 G1MappingChangedListener* _listener; | |
| 46 protected: | |
| 47 // Backing storage. | |
| 48 G1PageBasedVirtualSpace _storage; | |
|
22977
33e421924c67
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
20543
diff
changeset
|
49 |
| 20337 | 50 size_t _region_granularity; |
| 51 // Mapping management | |
| 52 BitMap _commit_map; | |
| 53 | |
|
22977
33e421924c67
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
20543
diff
changeset
|
54 G1RegionToSpaceMapper(ReservedSpace rs, size_t used_size, size_t page_size, size_t region_granularity, MemoryType type); |
| 20337 | 55 |
| 20543 | 56 void fire_on_commit(uint start_idx, size_t num_regions, bool zero_filled); |
| 20337 | 57 public: |
| 58 MemRegion reserved() { return _storage.reserved(); } | |
| 59 | |
| 60 void set_mapping_changed_listener(G1MappingChangedListener* listener) { _listener = listener; } | |
| 61 | |
| 62 virtual ~G1RegionToSpaceMapper() { | |
| 63 _commit_map.resize(0, /* in_resource_area */ false); | |
| 64 } | |
| 65 | |
| 66 bool is_committed(uintptr_t idx) const { | |
| 67 return _commit_map.at(idx); | |
| 68 } | |
| 69 | |
|
22977
33e421924c67
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
20543
diff
changeset
|
70 virtual void commit_regions(uint start_idx, size_t num_regions = 1) = 0; |
|
33e421924c67
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
20543
diff
changeset
|
71 virtual void uncommit_regions(uint start_idx, size_t num_regions = 1) = 0; |
| 20337 | 72 |
| 73 // Creates an appropriate G1RegionToSpaceMapper for the given parameters. | |
|
22977
33e421924c67
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
20543
diff
changeset
|
74 // The actual space to be used within the given reservation is given by actual_size. |
|
33e421924c67
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
20543
diff
changeset
|
75 // This is because some OSes need to round up the reservation size to guarantee |
|
33e421924c67
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
20543
diff
changeset
|
76 // alignment of page_size. |
| 20337 | 77 // The byte_translation_factor defines how many bytes in a region correspond to |
| 78 // a single byte in the data structure this mapper is for. | |
| 79 // Eg. in the card table, this value corresponds to the size a single card | |
|
22977
33e421924c67
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
20543
diff
changeset
|
80 // table entry corresponds to in the heap. |
| 20337 | 81 static G1RegionToSpaceMapper* create_mapper(ReservedSpace rs, |
|
22977
33e421924c67
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
20543
diff
changeset
|
82 size_t actual_size, |
|
33e421924c67
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
20543
diff
changeset
|
83 size_t page_size, |
| 20337 | 84 size_t region_granularity, |
| 85 size_t byte_translation_factor, | |
| 86 MemoryType type); | |
| 87 }; | |
| 88 | |
| 89 #endif /* SHARE_VM_GC_IMPLEMENTATION_G1_G1REGIONTOSPACEMAPPER_HPP */ |