Wed, 27 Aug 2014 08:19:12 -0400
8046598: Scalable Native memory tracking development
Summary: Enhance scalability of native memory tracking
Reviewed-by: coleenp, ctornqvi, gtriantafill
zgu@7074 | 1 | /* |
zgu@7074 | 2 | * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved. |
zgu@7074 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
zgu@7074 | 4 | * |
zgu@7074 | 5 | * This code is free software; you can redistribute it and/or modify it |
zgu@7074 | 6 | * under the terms of the GNU General Public License version 2 only, as |
zgu@7074 | 7 | * published by the Free Software Foundation. |
zgu@7074 | 8 | * |
zgu@7074 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
zgu@7074 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
zgu@7074 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
zgu@7074 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
zgu@7074 | 13 | * accompanied this code). |
zgu@7074 | 14 | * |
zgu@7074 | 15 | * You should have received a copy of the GNU General Public License version |
zgu@7074 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
zgu@7074 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
zgu@7074 | 18 | * |
zgu@7074 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
zgu@7074 | 20 | * or visit www.oracle.com if you need additional information or have any |
zgu@7074 | 21 | * questions. |
zgu@7074 | 22 | * |
zgu@7074 | 23 | */ |
zgu@7074 | 24 | |
zgu@7074 | 25 | #ifndef SHARE_VM_SERVICES_VIRTUAL_MEMORY_TRACKER_HPP |
zgu@7074 | 26 | #define SHARE_VM_SERVICES_VIRTUAL_MEMORY_TRACKER_HPP |
zgu@7074 | 27 | |
zgu@7074 | 28 | #if INCLUDE_NMT |
zgu@7074 | 29 | |
zgu@7074 | 30 | #include "memory/allocation.hpp" |
zgu@7074 | 31 | #include "services/allocationSite.hpp" |
zgu@7074 | 32 | #include "services/nmtCommon.hpp" |
zgu@7074 | 33 | #include "utilities/linkedlist.hpp" |
zgu@7074 | 34 | #include "utilities/nativeCallStack.hpp" |
zgu@7074 | 35 | #include "utilities/ostream.hpp" |
zgu@7074 | 36 | |
zgu@7074 | 37 | |
zgu@7074 | 38 | /* |
zgu@7074 | 39 | * Virtual memory counter |
zgu@7074 | 40 | */ |
zgu@7074 | 41 | class VirtualMemory VALUE_OBJ_CLASS_SPEC { |
zgu@7074 | 42 | private: |
zgu@7074 | 43 | size_t _reserved; |
zgu@7074 | 44 | size_t _committed; |
zgu@7074 | 45 | |
zgu@7074 | 46 | public: |
zgu@7074 | 47 | VirtualMemory() : _reserved(0), _committed(0) { } |
zgu@7074 | 48 | |
zgu@7074 | 49 | inline void reserve_memory(size_t sz) { _reserved += sz; } |
zgu@7074 | 50 | inline void commit_memory (size_t sz) { |
zgu@7074 | 51 | _committed += sz; |
zgu@7074 | 52 | assert(_committed <= _reserved, "Sanity check"); |
zgu@7074 | 53 | } |
zgu@7074 | 54 | |
zgu@7074 | 55 | inline void release_memory (size_t sz) { |
zgu@7074 | 56 | assert(_reserved >= sz, "Negative amount"); |
zgu@7074 | 57 | _reserved -= sz; |
zgu@7074 | 58 | } |
zgu@7074 | 59 | |
zgu@7074 | 60 | inline void uncommit_memory(size_t sz) { |
zgu@7074 | 61 | assert(_committed >= sz, "Negative amount"); |
zgu@7074 | 62 | _committed -= sz; |
zgu@7074 | 63 | } |
zgu@7074 | 64 | |
zgu@7074 | 65 | void reset() { |
zgu@7074 | 66 | _reserved = 0; |
zgu@7074 | 67 | _committed = 0; |
zgu@7074 | 68 | } |
zgu@7074 | 69 | |
zgu@7074 | 70 | inline size_t reserved() const { return _reserved; } |
zgu@7074 | 71 | inline size_t committed() const { return _committed; } |
zgu@7074 | 72 | }; |
zgu@7074 | 73 | |
zgu@7074 | 74 | // Virtual memory allocation site, keeps track where the virtual memory is reserved. |
zgu@7074 | 75 | class VirtualMemoryAllocationSite : public AllocationSite<VirtualMemory> { |
zgu@7074 | 76 | public: |
zgu@7074 | 77 | VirtualMemoryAllocationSite(const NativeCallStack& stack) : |
zgu@7074 | 78 | AllocationSite<VirtualMemory>(stack) { } |
zgu@7074 | 79 | |
zgu@7074 | 80 | inline void reserve_memory(size_t sz) { data()->reserve_memory(sz); } |
zgu@7074 | 81 | inline void commit_memory (size_t sz) { data()->commit_memory(sz); } |
zgu@7074 | 82 | inline void uncommit_memory(size_t sz) { data()->uncommit_memory(sz); } |
zgu@7074 | 83 | inline void release_memory(size_t sz) { data()->release_memory(sz); } |
zgu@7074 | 84 | inline size_t reserved() const { return peek()->reserved(); } |
zgu@7074 | 85 | inline size_t committed() const { return peek()->committed(); } |
zgu@7074 | 86 | }; |
zgu@7074 | 87 | |
zgu@7074 | 88 | class VirtualMemorySummary; |
zgu@7074 | 89 | |
zgu@7074 | 90 | // This class represents a snapshot of virtual memory at a given time. |
zgu@7074 | 91 | // The latest snapshot is saved in a static area. |
zgu@7074 | 92 | class VirtualMemorySnapshot : public ResourceObj { |
zgu@7074 | 93 | friend class VirtualMemorySummary; |
zgu@7074 | 94 | |
zgu@7074 | 95 | private: |
zgu@7074 | 96 | VirtualMemory _virtual_memory[mt_number_of_types]; |
zgu@7074 | 97 | |
zgu@7074 | 98 | public: |
zgu@7074 | 99 | inline VirtualMemory* by_type(MEMFLAGS flag) { |
zgu@7074 | 100 | int index = NMTUtil::flag_to_index(flag); |
zgu@7074 | 101 | return &_virtual_memory[index]; |
zgu@7074 | 102 | } |
zgu@7074 | 103 | |
zgu@7074 | 104 | inline VirtualMemory* by_index(int index) { |
zgu@7074 | 105 | assert(index >= 0, "Index out of bound"); |
zgu@7074 | 106 | assert(index < mt_number_of_types, "Index out of bound"); |
zgu@7074 | 107 | return &_virtual_memory[index]; |
zgu@7074 | 108 | } |
zgu@7074 | 109 | |
zgu@7074 | 110 | inline size_t total_reserved() const { |
zgu@7074 | 111 | size_t amount = 0; |
zgu@7074 | 112 | for (int index = 0; index < mt_number_of_types; index ++) { |
zgu@7074 | 113 | amount += _virtual_memory[index].reserved(); |
zgu@7074 | 114 | } |
zgu@7074 | 115 | return amount; |
zgu@7074 | 116 | } |
zgu@7074 | 117 | |
zgu@7074 | 118 | inline size_t total_committed() const { |
zgu@7074 | 119 | size_t amount = 0; |
zgu@7074 | 120 | for (int index = 0; index < mt_number_of_types; index ++) { |
zgu@7074 | 121 | amount += _virtual_memory[index].committed(); |
zgu@7074 | 122 | } |
zgu@7074 | 123 | return amount; |
zgu@7074 | 124 | } |
zgu@7074 | 125 | |
zgu@7074 | 126 | inline void reset() { |
zgu@7074 | 127 | for (int index = 0; index < mt_number_of_types; index ++) { |
zgu@7074 | 128 | _virtual_memory[index].reset(); |
zgu@7074 | 129 | } |
zgu@7074 | 130 | } |
zgu@7074 | 131 | |
zgu@7074 | 132 | void copy_to(VirtualMemorySnapshot* s) { |
zgu@7074 | 133 | for (int index = 0; index < mt_number_of_types; index ++) { |
zgu@7074 | 134 | s->_virtual_memory[index] = _virtual_memory[index]; |
zgu@7074 | 135 | } |
zgu@7074 | 136 | } |
zgu@7074 | 137 | }; |
zgu@7074 | 138 | |
zgu@7074 | 139 | class VirtualMemorySummary : AllStatic { |
zgu@7074 | 140 | public: |
zgu@7074 | 141 | static void initialize(); |
zgu@7074 | 142 | |
zgu@7074 | 143 | static inline void record_reserved_memory(size_t size, MEMFLAGS flag) { |
zgu@7074 | 144 | as_snapshot()->by_type(flag)->reserve_memory(size); |
zgu@7074 | 145 | } |
zgu@7074 | 146 | |
zgu@7074 | 147 | static inline void record_committed_memory(size_t size, MEMFLAGS flag) { |
zgu@7074 | 148 | as_snapshot()->by_type(flag)->commit_memory(size); |
zgu@7074 | 149 | } |
zgu@7074 | 150 | |
zgu@7074 | 151 | static inline void record_uncommitted_memory(size_t size, MEMFLAGS flag) { |
zgu@7074 | 152 | as_snapshot()->by_type(flag)->uncommit_memory(size); |
zgu@7074 | 153 | } |
zgu@7074 | 154 | |
zgu@7074 | 155 | static inline void record_released_memory(size_t size, MEMFLAGS flag) { |
zgu@7074 | 156 | as_snapshot()->by_type(flag)->release_memory(size); |
zgu@7074 | 157 | } |
zgu@7074 | 158 | |
zgu@7074 | 159 | // Move virtual memory from one memory type to another. |
zgu@7074 | 160 | // Virtual memory can be reserved before it is associated with a memory type, and tagged |
zgu@7074 | 161 | // as 'unknown'. Once the memory is tagged, the virtual memory will be moved from 'unknown' |
zgu@7074 | 162 | // type to specified memory type. |
zgu@7074 | 163 | static inline void move_reserved_memory(MEMFLAGS from, MEMFLAGS to, size_t size) { |
zgu@7074 | 164 | as_snapshot()->by_type(from)->release_memory(size); |
zgu@7074 | 165 | as_snapshot()->by_type(to)->reserve_memory(size); |
zgu@7074 | 166 | } |
zgu@7074 | 167 | |
zgu@7074 | 168 | static inline void move_committed_memory(MEMFLAGS from, MEMFLAGS to, size_t size) { |
zgu@7074 | 169 | as_snapshot()->by_type(from)->uncommit_memory(size); |
zgu@7074 | 170 | as_snapshot()->by_type(to)->commit_memory(size); |
zgu@7074 | 171 | } |
zgu@7074 | 172 | |
zgu@7074 | 173 | static inline void snapshot(VirtualMemorySnapshot* s) { |
zgu@7074 | 174 | as_snapshot()->copy_to(s); |
zgu@7074 | 175 | } |
zgu@7074 | 176 | |
zgu@7074 | 177 | static inline void reset() { |
zgu@7074 | 178 | as_snapshot()->reset(); |
zgu@7074 | 179 | } |
zgu@7074 | 180 | |
zgu@7074 | 181 | static VirtualMemorySnapshot* as_snapshot() { |
zgu@7074 | 182 | return (VirtualMemorySnapshot*)_snapshot; |
zgu@7074 | 183 | } |
zgu@7074 | 184 | |
zgu@7074 | 185 | private: |
zgu@7074 | 186 | static size_t _snapshot[CALC_OBJ_SIZE_IN_TYPE(VirtualMemorySnapshot, size_t)]; |
zgu@7074 | 187 | }; |
zgu@7074 | 188 | |
zgu@7074 | 189 | |
zgu@7074 | 190 | |
zgu@7074 | 191 | /* |
zgu@7074 | 192 | * A virtual memory region |
zgu@7074 | 193 | */ |
zgu@7074 | 194 | class VirtualMemoryRegion VALUE_OBJ_CLASS_SPEC { |
zgu@7074 | 195 | private: |
zgu@7074 | 196 | address _base_address; |
zgu@7074 | 197 | size_t _size; |
zgu@7074 | 198 | |
zgu@7074 | 199 | public: |
zgu@7074 | 200 | VirtualMemoryRegion(address addr, size_t size) : |
zgu@7074 | 201 | _base_address(addr), _size(size) { |
zgu@7074 | 202 | assert(addr != NULL, "Invalid address"); |
zgu@7074 | 203 | assert(size > 0, "Invalid size"); |
zgu@7074 | 204 | } |
zgu@7074 | 205 | |
zgu@7074 | 206 | inline address base() const { return _base_address; } |
zgu@7074 | 207 | inline address end() const { return base() + size(); } |
zgu@7074 | 208 | inline size_t size() const { return _size; } |
zgu@7074 | 209 | |
zgu@7074 | 210 | inline bool is_empty() const { return size() == 0; } |
zgu@7074 | 211 | |
zgu@7074 | 212 | inline bool contain_address(address addr) const { |
zgu@7074 | 213 | return (addr >= base() && addr < end()); |
zgu@7074 | 214 | } |
zgu@7074 | 215 | |
zgu@7074 | 216 | |
zgu@7074 | 217 | inline bool contain_region(address addr, size_t size) const { |
zgu@7074 | 218 | return contain_address(addr) && contain_address(addr + size - 1); |
zgu@7074 | 219 | } |
zgu@7074 | 220 | |
zgu@7074 | 221 | inline bool same_region(address addr, size_t sz) const { |
zgu@7074 | 222 | return (addr == base() && sz == size()); |
zgu@7074 | 223 | } |
zgu@7074 | 224 | |
zgu@7074 | 225 | |
zgu@7074 | 226 | inline bool overlap_region(address addr, size_t sz) const { |
zgu@7074 | 227 | VirtualMemoryRegion rgn(addr, sz); |
zgu@7074 | 228 | return contain_address(addr) || |
zgu@7074 | 229 | contain_address(addr + sz - 1) || |
zgu@7074 | 230 | rgn.contain_address(base()) || |
zgu@7074 | 231 | rgn.contain_address(end() - 1); |
zgu@7074 | 232 | } |
zgu@7074 | 233 | |
zgu@7074 | 234 | inline bool adjacent_to(address addr, size_t sz) const { |
zgu@7074 | 235 | return (addr == end() || (addr + sz) == base()); |
zgu@7074 | 236 | } |
zgu@7074 | 237 | |
zgu@7074 | 238 | void exclude_region(address addr, size_t sz) { |
zgu@7074 | 239 | assert(contain_region(addr, sz), "Not containment"); |
zgu@7074 | 240 | assert(addr == base() || addr + sz == end(), "Can not exclude from middle"); |
zgu@7074 | 241 | size_t new_size = size() - sz; |
zgu@7074 | 242 | |
zgu@7074 | 243 | if (addr == base()) { |
zgu@7074 | 244 | set_base(addr + sz); |
zgu@7074 | 245 | } |
zgu@7074 | 246 | set_size(new_size); |
zgu@7074 | 247 | } |
zgu@7074 | 248 | |
zgu@7074 | 249 | void expand_region(address addr, size_t sz) { |
zgu@7074 | 250 | assert(adjacent_to(addr, sz), "Not adjacent regions"); |
zgu@7074 | 251 | if (base() == addr + sz) { |
zgu@7074 | 252 | set_base(addr); |
zgu@7074 | 253 | } |
zgu@7074 | 254 | set_size(size() + sz); |
zgu@7074 | 255 | } |
zgu@7074 | 256 | |
zgu@7074 | 257 | protected: |
zgu@7074 | 258 | void set_base(address base) { |
zgu@7074 | 259 | assert(base != NULL, "Sanity check"); |
zgu@7074 | 260 | _base_address = base; |
zgu@7074 | 261 | } |
zgu@7074 | 262 | |
zgu@7074 | 263 | void set_size(size_t size) { |
zgu@7074 | 264 | assert(size > 0, "Sanity check"); |
zgu@7074 | 265 | _size = size; |
zgu@7074 | 266 | } |
zgu@7074 | 267 | }; |
zgu@7074 | 268 | |
zgu@7074 | 269 | |
zgu@7074 | 270 | class CommittedMemoryRegion : public VirtualMemoryRegion { |
zgu@7074 | 271 | private: |
zgu@7074 | 272 | NativeCallStack _stack; |
zgu@7074 | 273 | |
zgu@7074 | 274 | public: |
zgu@7074 | 275 | CommittedMemoryRegion(address addr, size_t size, const NativeCallStack& stack) : |
zgu@7074 | 276 | VirtualMemoryRegion(addr, size), _stack(stack) { } |
zgu@7074 | 277 | |
zgu@7074 | 278 | inline int compare(const CommittedMemoryRegion& rgn) const { |
zgu@7074 | 279 | if (overlap_region(rgn.base(), rgn.size()) || |
zgu@7074 | 280 | adjacent_to (rgn.base(), rgn.size())) { |
zgu@7074 | 281 | return 0; |
zgu@7074 | 282 | } else { |
zgu@7074 | 283 | if (base() == rgn.base()) { |
zgu@7074 | 284 | return 0; |
zgu@7074 | 285 | } else if (base() > rgn.base()) { |
zgu@7074 | 286 | return 1; |
zgu@7074 | 287 | } else { |
zgu@7074 | 288 | return -1; |
zgu@7074 | 289 | } |
zgu@7074 | 290 | } |
zgu@7074 | 291 | } |
zgu@7074 | 292 | |
zgu@7074 | 293 | inline bool equals(const CommittedMemoryRegion& rgn) const { |
zgu@7074 | 294 | return compare(rgn) == 0; |
zgu@7074 | 295 | } |
zgu@7074 | 296 | |
zgu@7074 | 297 | inline void set_call_stack(const NativeCallStack& stack) { _stack = stack; } |
zgu@7074 | 298 | inline const NativeCallStack* call_stack() const { return &_stack; } |
zgu@7074 | 299 | }; |
zgu@7074 | 300 | |
zgu@7074 | 301 | |
zgu@7074 | 302 | typedef LinkedListIterator<CommittedMemoryRegion> CommittedRegionIterator; |
zgu@7074 | 303 | |
zgu@7074 | 304 | int compare_committed_region(const CommittedMemoryRegion&, const CommittedMemoryRegion&); |
zgu@7074 | 305 | class ReservedMemoryRegion : public VirtualMemoryRegion { |
zgu@7074 | 306 | private: |
zgu@7074 | 307 | SortedLinkedList<CommittedMemoryRegion, compare_committed_region> |
zgu@7074 | 308 | _committed_regions; |
zgu@7074 | 309 | |
zgu@7074 | 310 | NativeCallStack _stack; |
zgu@7074 | 311 | MEMFLAGS _flag; |
zgu@7074 | 312 | |
zgu@7074 | 313 | bool _all_committed; |
zgu@7074 | 314 | |
zgu@7074 | 315 | public: |
zgu@7074 | 316 | ReservedMemoryRegion(address base, size_t size, const NativeCallStack& stack, |
zgu@7074 | 317 | MEMFLAGS flag = mtNone) : |
zgu@7074 | 318 | VirtualMemoryRegion(base, size), _stack(stack), _flag(flag), |
zgu@7074 | 319 | _all_committed(false) { } |
zgu@7074 | 320 | |
zgu@7074 | 321 | |
zgu@7074 | 322 | ReservedMemoryRegion(address base, size_t size) : |
zgu@7074 | 323 | VirtualMemoryRegion(base, size), _stack(emptyStack), _flag(mtNone), |
zgu@7074 | 324 | _all_committed(false) { } |
zgu@7074 | 325 | |
zgu@7074 | 326 | // Copy constructor |
zgu@7074 | 327 | ReservedMemoryRegion(const ReservedMemoryRegion& rr) : |
zgu@7074 | 328 | VirtualMemoryRegion(rr.base(), rr.size()) { |
zgu@7074 | 329 | *this = rr; |
zgu@7074 | 330 | } |
zgu@7074 | 331 | |
zgu@7074 | 332 | inline void set_call_stack(const NativeCallStack& stack) { _stack = stack; } |
zgu@7074 | 333 | inline const NativeCallStack* call_stack() const { return &_stack; } |
zgu@7074 | 334 | |
zgu@7074 | 335 | void set_flag(MEMFLAGS flag); |
zgu@7074 | 336 | inline MEMFLAGS flag() const { return _flag; } |
zgu@7074 | 337 | |
zgu@7074 | 338 | inline int compare(const ReservedMemoryRegion& rgn) const { |
zgu@7074 | 339 | if (overlap_region(rgn.base(), rgn.size())) { |
zgu@7074 | 340 | return 0; |
zgu@7074 | 341 | } else { |
zgu@7074 | 342 | if (base() == rgn.base()) { |
zgu@7074 | 343 | return 0; |
zgu@7074 | 344 | } else if (base() > rgn.base()) { |
zgu@7074 | 345 | return 1; |
zgu@7074 | 346 | } else { |
zgu@7074 | 347 | return -1; |
zgu@7074 | 348 | } |
zgu@7074 | 349 | } |
zgu@7074 | 350 | } |
zgu@7074 | 351 | |
zgu@7074 | 352 | inline bool equals(const ReservedMemoryRegion& rgn) const { |
zgu@7074 | 353 | return compare(rgn) == 0; |
zgu@7074 | 354 | } |
zgu@7074 | 355 | |
zgu@7074 | 356 | bool add_committed_region(address addr, size_t size, const NativeCallStack& stack); |
zgu@7074 | 357 | bool remove_uncommitted_region(address addr, size_t size); |
zgu@7074 | 358 | |
zgu@7074 | 359 | size_t committed_size() const; |
zgu@7074 | 360 | |
zgu@7074 | 361 | // move committed regions that higher than specified address to |
zgu@7074 | 362 | // the new region |
zgu@7074 | 363 | void move_committed_regions(address addr, ReservedMemoryRegion& rgn); |
zgu@7074 | 364 | |
zgu@7074 | 365 | inline bool all_committed() const { return _all_committed; } |
zgu@7074 | 366 | void set_all_committed(bool b); |
zgu@7074 | 367 | |
zgu@7074 | 368 | CommittedRegionIterator iterate_committed_regions() const { |
zgu@7074 | 369 | return CommittedRegionIterator(_committed_regions.head()); |
zgu@7074 | 370 | } |
zgu@7074 | 371 | |
zgu@7074 | 372 | ReservedMemoryRegion& operator= (const ReservedMemoryRegion& other) { |
zgu@7074 | 373 | set_base(other.base()); |
zgu@7074 | 374 | set_size(other.size()); |
zgu@7074 | 375 | |
zgu@7074 | 376 | _stack = *other.call_stack(); |
zgu@7074 | 377 | _flag = other.flag(); |
zgu@7074 | 378 | _all_committed = other.all_committed(); |
zgu@7074 | 379 | if (other.all_committed()) { |
zgu@7074 | 380 | set_all_committed(true); |
zgu@7074 | 381 | } else { |
zgu@7074 | 382 | CommittedRegionIterator itr = other.iterate_committed_regions(); |
zgu@7074 | 383 | const CommittedMemoryRegion* rgn = itr.next(); |
zgu@7074 | 384 | while (rgn != NULL) { |
zgu@7074 | 385 | _committed_regions.add(*rgn); |
zgu@7074 | 386 | rgn = itr.next(); |
zgu@7074 | 387 | } |
zgu@7074 | 388 | } |
zgu@7074 | 389 | return *this; |
zgu@7074 | 390 | } |
zgu@7074 | 391 | |
zgu@7074 | 392 | private: |
zgu@7074 | 393 | // The committed region contains the uncommitted region, subtract the uncommitted |
zgu@7074 | 394 | // region from this committed region |
zgu@7074 | 395 | bool remove_uncommitted_region(LinkedListNode<CommittedMemoryRegion>* node, |
zgu@7074 | 396 | address addr, size_t sz); |
zgu@7074 | 397 | |
zgu@7074 | 398 | bool add_committed_region(const CommittedMemoryRegion& rgn) { |
zgu@7074 | 399 | assert(rgn.base() != NULL, "Invalid base address"); |
zgu@7074 | 400 | assert(size() > 0, "Invalid size"); |
zgu@7074 | 401 | return _committed_regions.add(rgn) != NULL; |
zgu@7074 | 402 | } |
zgu@7074 | 403 | }; |
zgu@7074 | 404 | |
zgu@7074 | 405 | int compare_reserved_region_base(const ReservedMemoryRegion& r1, const ReservedMemoryRegion& r2); |
zgu@7074 | 406 | |
zgu@7074 | 407 | class VirtualMemoryWalker : public StackObj { |
zgu@7074 | 408 | public: |
zgu@7074 | 409 | virtual bool do_allocation_site(const ReservedMemoryRegion* rgn) { return false; } |
zgu@7074 | 410 | }; |
zgu@7074 | 411 | |
zgu@7074 | 412 | // Main class called from MemTracker to track virtual memory allocations, commits and releases. |
zgu@7074 | 413 | class VirtualMemoryTracker : AllStatic { |
zgu@7074 | 414 | public: |
zgu@7074 | 415 | static bool initialize(NMT_TrackingLevel level); |
zgu@7074 | 416 | |
zgu@7074 | 417 | static bool add_reserved_region (address base_addr, size_t size, const NativeCallStack& stack, |
zgu@7074 | 418 | MEMFLAGS flag = mtNone, bool all_committed = false); |
zgu@7074 | 419 | |
zgu@7074 | 420 | static bool add_committed_region (address base_addr, size_t size, const NativeCallStack& stack); |
zgu@7074 | 421 | static bool remove_uncommitted_region (address base_addr, size_t size); |
zgu@7074 | 422 | static bool remove_released_region (address base_addr, size_t size); |
zgu@7074 | 423 | static void set_reserved_region_type (address addr, MEMFLAGS flag); |
zgu@7074 | 424 | |
zgu@7074 | 425 | // Walk virtual memory data structure for creating baseline, etc. |
zgu@7074 | 426 | static bool walk_virtual_memory(VirtualMemoryWalker* walker); |
zgu@7074 | 427 | |
zgu@7074 | 428 | static bool transition(NMT_TrackingLevel from, NMT_TrackingLevel to); |
zgu@7074 | 429 | |
zgu@7074 | 430 | private: |
zgu@7074 | 431 | static SortedLinkedList<ReservedMemoryRegion, compare_reserved_region_base> _reserved_regions; |
zgu@7074 | 432 | }; |
zgu@7074 | 433 | |
zgu@7074 | 434 | |
zgu@7074 | 435 | #endif // INCLUDE_NMT |
zgu@7074 | 436 | |
zgu@7074 | 437 | #endif // SHARE_VM_SERVICES_VIRTUAL_MEMORY_TRACKER_HPP |