Mercurial > hg > graal-jvmci-8
annotate src/share/vm/gc_implementation/parallelScavenge/psVirtualspace.hpp @ 6197:d2a62e0f25eb
6995781: Native Memory Tracking (Phase 1)
7151532: DCmd for hotspot native memory tracking
Summary: Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd
Reviewed-by: acorn, coleenp, fparain
| author | zgu |
|---|---|
| date | Thu, 28 Jun 2012 17:03:16 -0400 |
| parents | f95d63e2154a |
| children | b9a9ed0f8eeb |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
579
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
579
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
579
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSVIRTUALSPACE_HPP |
| 26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSVIRTUALSPACE_HPP | |
| 27 | |
| 28 #include "runtime/virtualspace.hpp" | |
| 29 | |
| 0 | 30 // VirtualSpace for the parallel scavenge collector. |
| 31 // | |
| 32 // VirtualSpace is data structure for committing a previously reserved address | |
| 33 // range in smaller chunks. | |
| 34 | |
| 6197 | 35 class PSVirtualSpace : public CHeapObj<mtGC> { |
| 0 | 36 friend class VMStructs; |
| 37 protected: | |
| 38 // The space is committed/uncommited in chunks of size _alignment. The | |
| 39 // ReservedSpace passed to initialize() must be aligned to this value. | |
| 40 const size_t _alignment; | |
| 41 | |
| 42 // Reserved area | |
| 43 char* _reserved_low_addr; | |
| 44 char* _reserved_high_addr; | |
| 45 | |
| 46 // Committed area | |
| 47 char* _committed_low_addr; | |
| 48 char* _committed_high_addr; | |
| 49 | |
| 50 // The entire space has been committed and pinned in memory, no | |
| 51 // os::commit_memory() or os::uncommit_memory(). | |
| 52 bool _special; | |
| 53 | |
| 54 // Convenience wrapper. | |
| 55 inline static size_t pointer_delta(const char* left, const char* right); | |
| 56 | |
| 57 public: | |
| 58 PSVirtualSpace(ReservedSpace rs, size_t alignment); | |
| 59 PSVirtualSpace(ReservedSpace rs); | |
| 60 | |
| 61 ~PSVirtualSpace(); | |
| 62 | |
| 63 // Eventually all instances should be created with the above 1- or 2-arg | |
| 64 // constructors. Then the 1st constructor below should become protected and | |
| 65 // the 2nd ctor and initialize() removed. | |
| 66 PSVirtualSpace(size_t alignment): _alignment(alignment) { } | |
| 67 PSVirtualSpace(); | |
| 68 bool initialize(ReservedSpace rs, size_t commit_size); | |
| 69 | |
| 70 bool contains(void* p) const; | |
| 71 | |
| 72 // Accessors (all sizes are bytes). | |
| 73 size_t alignment() const { return _alignment; } | |
| 74 char* reserved_low_addr() const { return _reserved_low_addr; } | |
| 75 char* reserved_high_addr() const { return _reserved_high_addr; } | |
| 76 char* committed_low_addr() const { return _committed_low_addr; } | |
| 77 char* committed_high_addr() const { return _committed_high_addr; } | |
| 78 bool special() const { return _special; } | |
| 79 | |
| 80 inline size_t committed_size() const; | |
| 81 inline size_t reserved_size() const; | |
| 82 inline size_t uncommitted_size() const; | |
| 83 | |
| 84 // Operations. | |
| 85 inline void set_reserved(char* low_addr, char* high_addr, bool special); | |
| 86 inline void set_reserved(ReservedSpace rs); | |
| 87 inline void set_committed(char* low_addr, char* high_addr); | |
|
535
4e400c36026f
6783381: NUMA allocator: don't pretouch eden space with UseNUMA
iveresov
parents:
0
diff
changeset
|
88 virtual bool expand_by(size_t bytes); |
| 0 | 89 virtual bool shrink_by(size_t bytes); |
| 90 virtual size_t expand_into(PSVirtualSpace* space, size_t bytes); | |
| 91 void release(); | |
| 92 | |
| 93 #ifndef PRODUCT | |
| 94 // Debugging | |
| 95 static bool is_aligned(size_t val, size_t align); | |
| 96 bool is_aligned(size_t val) const; | |
| 97 bool is_aligned(char* val) const; | |
| 98 void verify() const; | |
| 99 void print() const; | |
| 100 virtual bool grows_up() const { return true; } | |
| 101 bool grows_down() const { return !grows_up(); } | |
| 102 | |
| 103 // Helper class to verify a space when entering/leaving a block. | |
| 104 class PSVirtualSpaceVerifier: public StackObj { | |
| 105 private: | |
| 106 const PSVirtualSpace* const _space; | |
| 107 public: | |
| 108 PSVirtualSpaceVerifier(PSVirtualSpace* space): _space(space) { | |
| 109 _space->verify(); | |
| 110 } | |
| 111 ~PSVirtualSpaceVerifier() { _space->verify(); } | |
| 112 }; | |
| 113 #endif | |
| 114 | |
| 115 virtual void print_space_boundaries_on(outputStream* st) const; | |
| 116 | |
| 117 // Included for compatibility with the original VirtualSpace. | |
| 118 public: | |
| 119 // Committed area | |
| 120 char* low() const { return committed_low_addr(); } | |
| 121 char* high() const { return committed_high_addr(); } | |
| 122 | |
| 123 // Reserved area | |
| 124 char* low_boundary() const { return reserved_low_addr(); } | |
| 125 char* high_boundary() const { return reserved_high_addr(); } | |
| 126 }; | |
| 127 | |
| 128 // A virtual space that grows from high addresses to low addresses. | |
| 129 class PSVirtualSpaceHighToLow : public PSVirtualSpace { | |
| 130 friend class VMStructs; | |
| 131 public: | |
| 132 PSVirtualSpaceHighToLow(ReservedSpace rs, size_t alignment); | |
| 133 PSVirtualSpaceHighToLow(ReservedSpace rs); | |
| 134 | |
|
535
4e400c36026f
6783381: NUMA allocator: don't pretouch eden space with UseNUMA
iveresov
parents:
0
diff
changeset
|
135 virtual bool expand_by(size_t bytes); |
| 0 | 136 virtual bool shrink_by(size_t bytes); |
| 137 virtual size_t expand_into(PSVirtualSpace* space, size_t bytes); | |
| 138 | |
| 139 virtual void print_space_boundaries_on(outputStream* st) const; | |
| 140 | |
| 141 #ifndef PRODUCT | |
| 142 // Debugging | |
| 143 virtual bool grows_up() const { return false; } | |
| 144 #endif | |
| 145 }; | |
| 146 | |
| 147 // | |
| 148 // PSVirtualSpace inlines. | |
| 149 // | |
| 150 inline size_t | |
| 151 PSVirtualSpace::pointer_delta(const char* left, const char* right) { | |
| 152 return ::pointer_delta((void *)left, (void*)right, sizeof(char)); | |
| 153 } | |
| 154 | |
| 155 inline size_t PSVirtualSpace::committed_size() const { | |
| 156 return pointer_delta(committed_high_addr(), committed_low_addr()); | |
| 157 } | |
| 158 | |
| 159 inline size_t PSVirtualSpace::reserved_size() const { | |
| 160 return pointer_delta(reserved_high_addr(), reserved_low_addr()); | |
| 161 } | |
| 162 | |
| 163 inline size_t PSVirtualSpace::uncommitted_size() const { | |
| 164 return reserved_size() - committed_size(); | |
| 165 } | |
| 166 | |
| 167 inline void PSVirtualSpace::set_reserved(char* low_addr, char* high_addr, bool special) { | |
| 168 _reserved_low_addr = low_addr; | |
| 169 _reserved_high_addr = high_addr; | |
| 170 _special = special; | |
| 171 } | |
| 172 | |
| 173 inline void PSVirtualSpace::set_reserved(ReservedSpace rs) { | |
| 174 set_reserved(rs.base(), rs.base() + rs.size(), rs.special()); | |
| 175 } | |
| 176 | |
| 177 inline void PSVirtualSpace::set_committed(char* low_addr, char* high_addr) { | |
| 178 _committed_low_addr = low_addr; | |
| 179 _committed_high_addr = high_addr; | |
| 180 } | |
| 1972 | 181 |
| 182 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSVIRTUALSPACE_HPP |