Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/psVirtualspace.hpp @ 535:4e400c36026f
6783381: NUMA allocator: don't pretouch eden space with UseNUMA
Summary: Moved pretouching to MutableSpace. Also MutableSpace now turns on page interleaving for the region it covers.
Reviewed-by: jmasa, jcoomes
| author | iveresov |
|---|---|
| date | Tue, 27 Jan 2009 18:13:59 -0800 |
| parents | a61af66fc99e |
| children | 0fbdb4381b99 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 2003-2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 // VirtualSpace for the parallel scavenge collector. | |
| 26 // | |
| 27 // VirtualSpace is data structure for committing a previously reserved address | |
| 28 // range in smaller chunks. | |
| 29 | |
| 30 class PSVirtualSpace : public CHeapObj { | |
| 31 friend class VMStructs; | |
| 32 protected: | |
| 33 // The space is committed/uncommited in chunks of size _alignment. The | |
| 34 // ReservedSpace passed to initialize() must be aligned to this value. | |
| 35 const size_t _alignment; | |
| 36 | |
| 37 // Reserved area | |
| 38 char* _reserved_low_addr; | |
| 39 char* _reserved_high_addr; | |
| 40 | |
| 41 // Committed area | |
| 42 char* _committed_low_addr; | |
| 43 char* _committed_high_addr; | |
| 44 | |
| 45 // The entire space has been committed and pinned in memory, no | |
| 46 // os::commit_memory() or os::uncommit_memory(). | |
| 47 bool _special; | |
| 48 | |
| 49 // Convenience wrapper. | |
| 50 inline static size_t pointer_delta(const char* left, const char* right); | |
| 51 | |
| 52 public: | |
| 53 PSVirtualSpace(ReservedSpace rs, size_t alignment); | |
| 54 PSVirtualSpace(ReservedSpace rs); | |
| 55 | |
| 56 ~PSVirtualSpace(); | |
| 57 | |
| 58 // Eventually all instances should be created with the above 1- or 2-arg | |
| 59 // constructors. Then the 1st constructor below should become protected and | |
| 60 // the 2nd ctor and initialize() removed. | |
| 61 PSVirtualSpace(size_t alignment): _alignment(alignment) { } | |
| 62 PSVirtualSpace(); | |
| 63 bool initialize(ReservedSpace rs, size_t commit_size); | |
| 64 | |
| 65 bool contains(void* p) const; | |
| 66 | |
| 67 // Accessors (all sizes are bytes). | |
| 68 size_t alignment() const { return _alignment; } | |
| 69 char* reserved_low_addr() const { return _reserved_low_addr; } | |
| 70 char* reserved_high_addr() const { return _reserved_high_addr; } | |
| 71 char* committed_low_addr() const { return _committed_low_addr; } | |
| 72 char* committed_high_addr() const { return _committed_high_addr; } | |
| 73 bool special() const { return _special; } | |
| 74 | |
| 75 inline size_t committed_size() const; | |
| 76 inline size_t reserved_size() const; | |
| 77 inline size_t uncommitted_size() const; | |
| 78 | |
| 79 // Operations. | |
| 80 inline void set_reserved(char* low_addr, char* high_addr, bool special); | |
| 81 inline void set_reserved(ReservedSpace rs); | |
| 82 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
|
83 virtual bool expand_by(size_t bytes); |
| 0 | 84 virtual bool shrink_by(size_t bytes); |
| 85 virtual size_t expand_into(PSVirtualSpace* space, size_t bytes); | |
| 86 void release(); | |
| 87 | |
| 88 #ifndef PRODUCT | |
| 89 // Debugging | |
| 90 static bool is_aligned(size_t val, size_t align); | |
| 91 bool is_aligned(size_t val) const; | |
| 92 bool is_aligned(char* val) const; | |
| 93 void verify() const; | |
| 94 void print() const; | |
| 95 virtual bool grows_up() const { return true; } | |
| 96 bool grows_down() const { return !grows_up(); } | |
| 97 | |
| 98 // Helper class to verify a space when entering/leaving a block. | |
| 99 class PSVirtualSpaceVerifier: public StackObj { | |
| 100 private: | |
| 101 const PSVirtualSpace* const _space; | |
| 102 public: | |
| 103 PSVirtualSpaceVerifier(PSVirtualSpace* space): _space(space) { | |
| 104 _space->verify(); | |
| 105 } | |
| 106 ~PSVirtualSpaceVerifier() { _space->verify(); } | |
| 107 }; | |
| 108 #endif | |
| 109 | |
| 110 virtual void print_space_boundaries_on(outputStream* st) const; | |
| 111 | |
| 112 // Included for compatibility with the original VirtualSpace. | |
| 113 public: | |
| 114 // Committed area | |
| 115 char* low() const { return committed_low_addr(); } | |
| 116 char* high() const { return committed_high_addr(); } | |
| 117 | |
| 118 // Reserved area | |
| 119 char* low_boundary() const { return reserved_low_addr(); } | |
| 120 char* high_boundary() const { return reserved_high_addr(); } | |
| 121 }; | |
| 122 | |
| 123 // A virtual space that grows from high addresses to low addresses. | |
| 124 class PSVirtualSpaceHighToLow : public PSVirtualSpace { | |
| 125 friend class VMStructs; | |
| 126 public: | |
| 127 PSVirtualSpaceHighToLow(ReservedSpace rs, size_t alignment); | |
| 128 PSVirtualSpaceHighToLow(ReservedSpace rs); | |
| 129 | |
|
535
4e400c36026f
6783381: NUMA allocator: don't pretouch eden space with UseNUMA
iveresov
parents:
0
diff
changeset
|
130 virtual bool expand_by(size_t bytes); |
| 0 | 131 virtual bool shrink_by(size_t bytes); |
| 132 virtual size_t expand_into(PSVirtualSpace* space, size_t bytes); | |
| 133 | |
| 134 virtual void print_space_boundaries_on(outputStream* st) const; | |
| 135 | |
| 136 #ifndef PRODUCT | |
| 137 // Debugging | |
| 138 virtual bool grows_up() const { return false; } | |
| 139 #endif | |
| 140 }; | |
| 141 | |
| 142 // | |
| 143 // PSVirtualSpace inlines. | |
| 144 // | |
| 145 inline size_t | |
| 146 PSVirtualSpace::pointer_delta(const char* left, const char* right) { | |
| 147 return ::pointer_delta((void *)left, (void*)right, sizeof(char)); | |
| 148 } | |
| 149 | |
| 150 inline size_t PSVirtualSpace::committed_size() const { | |
| 151 return pointer_delta(committed_high_addr(), committed_low_addr()); | |
| 152 } | |
| 153 | |
| 154 inline size_t PSVirtualSpace::reserved_size() const { | |
| 155 return pointer_delta(reserved_high_addr(), reserved_low_addr()); | |
| 156 } | |
| 157 | |
| 158 inline size_t PSVirtualSpace::uncommitted_size() const { | |
| 159 return reserved_size() - committed_size(); | |
| 160 } | |
| 161 | |
| 162 inline void PSVirtualSpace::set_reserved(char* low_addr, char* high_addr, bool special) { | |
| 163 _reserved_low_addr = low_addr; | |
| 164 _reserved_high_addr = high_addr; | |
| 165 _special = special; | |
| 166 } | |
| 167 | |
| 168 inline void PSVirtualSpace::set_reserved(ReservedSpace rs) { | |
| 169 set_reserved(rs.base(), rs.base() + rs.size(), rs.special()); | |
| 170 } | |
| 171 | |
| 172 inline void PSVirtualSpace::set_committed(char* low_addr, char* high_addr) { | |
| 173 _committed_low_addr = low_addr; | |
| 174 _committed_high_addr = high_addr; | |
| 175 } |