Mercurial > hg > truffle
annotate src/share/vm/services/virtualMemoryTracker.hpp @ 20553:417e3b8d04c5
8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
Summary: Disallow increasing native memory tracking level
Reviewed-by: hseigel, ctornqvi, gtriantafill
| author | coleenp |
|---|---|
| date | Fri, 10 Oct 2014 19:36:12 +0000 |
| parents | c6211b707068 |
| children |
| rev | line source |
|---|---|
| 20360 | 1 /* |
| 2 * Copyright (c) 2013, 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_SERVICES_VIRTUAL_MEMORY_TRACKER_HPP | |
| 26 #define SHARE_VM_SERVICES_VIRTUAL_MEMORY_TRACKER_HPP | |
| 27 | |
| 28 #if INCLUDE_NMT | |
| 29 | |
| 30 #include "memory/allocation.hpp" | |
| 31 #include "services/allocationSite.hpp" | |
| 32 #include "services/nmtCommon.hpp" | |
| 33 #include "utilities/linkedlist.hpp" | |
| 34 #include "utilities/nativeCallStack.hpp" | |
| 35 #include "utilities/ostream.hpp" | |
| 36 | |
| 37 | |
| 38 /* | |
| 39 * Virtual memory counter | |
| 40 */ | |
| 41 class VirtualMemory VALUE_OBJ_CLASS_SPEC { | |
| 42 private: | |
| 43 size_t _reserved; | |
| 44 size_t _committed; | |
| 45 | |
| 46 public: | |
| 47 VirtualMemory() : _reserved(0), _committed(0) { } | |
| 48 | |
| 49 inline void reserve_memory(size_t sz) { _reserved += sz; } | |
| 50 inline void commit_memory (size_t sz) { | |
| 51 _committed += sz; | |
| 52 assert(_committed <= _reserved, "Sanity check"); | |
| 53 } | |
| 54 | |
| 55 inline void release_memory (size_t sz) { | |
| 56 assert(_reserved >= sz, "Negative amount"); | |
| 57 _reserved -= sz; | |
| 58 } | |
| 59 | |
| 60 inline void uncommit_memory(size_t sz) { | |
| 61 assert(_committed >= sz, "Negative amount"); | |
| 62 _committed -= sz; | |
| 63 } | |
| 64 | |
| 65 inline size_t reserved() const { return _reserved; } | |
| 66 inline size_t committed() const { return _committed; } | |
| 67 }; | |
| 68 | |
| 69 // Virtual memory allocation site, keeps track where the virtual memory is reserved. | |
| 70 class VirtualMemoryAllocationSite : public AllocationSite<VirtualMemory> { | |
| 71 public: | |
| 72 VirtualMemoryAllocationSite(const NativeCallStack& stack) : | |
| 73 AllocationSite<VirtualMemory>(stack) { } | |
| 74 | |
| 75 inline void reserve_memory(size_t sz) { data()->reserve_memory(sz); } | |
| 76 inline void commit_memory (size_t sz) { data()->commit_memory(sz); } | |
| 77 inline void uncommit_memory(size_t sz) { data()->uncommit_memory(sz); } | |
| 78 inline void release_memory(size_t sz) { data()->release_memory(sz); } | |
| 79 inline size_t reserved() const { return peek()->reserved(); } | |
| 80 inline size_t committed() const { return peek()->committed(); } | |
| 81 }; | |
| 82 | |
| 83 class VirtualMemorySummary; | |
| 84 | |
| 85 // This class represents a snapshot of virtual memory at a given time. | |
| 86 // The latest snapshot is saved in a static area. | |
| 87 class VirtualMemorySnapshot : public ResourceObj { | |
| 88 friend class VirtualMemorySummary; | |
| 89 | |
| 90 private: | |
| 91 VirtualMemory _virtual_memory[mt_number_of_types]; | |
| 92 | |
| 93 public: | |
| 94 inline VirtualMemory* by_type(MEMFLAGS flag) { | |
| 95 int index = NMTUtil::flag_to_index(flag); | |
| 96 return &_virtual_memory[index]; | |
| 97 } | |
| 98 | |
| 99 inline VirtualMemory* by_index(int index) { | |
| 100 assert(index >= 0, "Index out of bound"); | |
| 101 assert(index < mt_number_of_types, "Index out of bound"); | |
| 102 return &_virtual_memory[index]; | |
| 103 } | |
| 104 | |
| 105 inline size_t total_reserved() const { | |
| 106 size_t amount = 0; | |
| 107 for (int index = 0; index < mt_number_of_types; index ++) { | |
| 108 amount += _virtual_memory[index].reserved(); | |
| 109 } | |
| 110 return amount; | |
| 111 } | |
| 112 | |
| 113 inline size_t total_committed() const { | |
| 114 size_t amount = 0; | |
| 115 for (int index = 0; index < mt_number_of_types; index ++) { | |
| 116 amount += _virtual_memory[index].committed(); | |
| 117 } | |
| 118 return amount; | |
| 119 } | |
| 120 | |
| 121 void copy_to(VirtualMemorySnapshot* s) { | |
| 122 for (int index = 0; index < mt_number_of_types; index ++) { | |
| 123 s->_virtual_memory[index] = _virtual_memory[index]; | |
| 124 } | |
| 125 } | |
| 126 }; | |
| 127 | |
| 128 class VirtualMemorySummary : AllStatic { | |
| 129 public: | |
| 130 static void initialize(); | |
| 131 | |
| 132 static inline void record_reserved_memory(size_t size, MEMFLAGS flag) { | |
| 133 as_snapshot()->by_type(flag)->reserve_memory(size); | |
| 134 } | |
| 135 | |
| 136 static inline void record_committed_memory(size_t size, MEMFLAGS flag) { | |
| 137 as_snapshot()->by_type(flag)->commit_memory(size); | |
| 138 } | |
| 139 | |
| 140 static inline void record_uncommitted_memory(size_t size, MEMFLAGS flag) { | |
| 141 as_snapshot()->by_type(flag)->uncommit_memory(size); | |
| 142 } | |
| 143 | |
| 144 static inline void record_released_memory(size_t size, MEMFLAGS flag) { | |
| 145 as_snapshot()->by_type(flag)->release_memory(size); | |
| 146 } | |
| 147 | |
| 148 // Move virtual memory from one memory type to another. | |
| 149 // Virtual memory can be reserved before it is associated with a memory type, and tagged | |
| 150 // as 'unknown'. Once the memory is tagged, the virtual memory will be moved from 'unknown' | |
| 151 // type to specified memory type. | |
| 152 static inline void move_reserved_memory(MEMFLAGS from, MEMFLAGS to, size_t size) { | |
| 153 as_snapshot()->by_type(from)->release_memory(size); | |
| 154 as_snapshot()->by_type(to)->reserve_memory(size); | |
| 155 } | |
| 156 | |
| 157 static inline void move_committed_memory(MEMFLAGS from, MEMFLAGS to, size_t size) { | |
| 158 as_snapshot()->by_type(from)->uncommit_memory(size); | |
| 159 as_snapshot()->by_type(to)->commit_memory(size); | |
| 160 } | |
| 161 | |
| 162 static inline void snapshot(VirtualMemorySnapshot* s) { | |
| 163 as_snapshot()->copy_to(s); | |
| 164 } | |
| 165 | |
| 166 static VirtualMemorySnapshot* as_snapshot() { | |
| 167 return (VirtualMemorySnapshot*)_snapshot; | |
| 168 } | |
| 169 | |
| 170 private: | |
| 171 static size_t _snapshot[CALC_OBJ_SIZE_IN_TYPE(VirtualMemorySnapshot, size_t)]; | |
| 172 }; | |
| 173 | |
| 174 | |
| 175 | |
| 176 /* | |
| 177 * A virtual memory region | |
| 178 */ | |
| 179 class VirtualMemoryRegion VALUE_OBJ_CLASS_SPEC { | |
| 180 private: | |
| 181 address _base_address; | |
| 182 size_t _size; | |
| 183 | |
| 184 public: | |
| 185 VirtualMemoryRegion(address addr, size_t size) : | |
| 186 _base_address(addr), _size(size) { | |
| 187 assert(addr != NULL, "Invalid address"); | |
| 188 assert(size > 0, "Invalid size"); | |
| 189 } | |
| 190 | |
| 191 inline address base() const { return _base_address; } | |
| 192 inline address end() const { return base() + size(); } | |
| 193 inline size_t size() const { return _size; } | |
| 194 | |
| 195 inline bool is_empty() const { return size() == 0; } | |
| 196 | |
| 197 inline bool contain_address(address addr) const { | |
| 198 return (addr >= base() && addr < end()); | |
| 199 } | |
| 200 | |
| 201 | |
| 202 inline bool contain_region(address addr, size_t size) const { | |
| 203 return contain_address(addr) && contain_address(addr + size - 1); | |
| 204 } | |
| 205 | |
| 206 inline bool same_region(address addr, size_t sz) const { | |
| 207 return (addr == base() && sz == size()); | |
| 208 } | |
| 209 | |
| 210 | |
| 211 inline bool overlap_region(address addr, size_t sz) const { | |
| 212 VirtualMemoryRegion rgn(addr, sz); | |
| 213 return contain_address(addr) || | |
| 214 contain_address(addr + sz - 1) || | |
| 215 rgn.contain_address(base()) || | |
| 216 rgn.contain_address(end() - 1); | |
| 217 } | |
| 218 | |
| 219 inline bool adjacent_to(address addr, size_t sz) const { | |
| 220 return (addr == end() || (addr + sz) == base()); | |
| 221 } | |
| 222 | |
| 223 void exclude_region(address addr, size_t sz) { | |
| 224 assert(contain_region(addr, sz), "Not containment"); | |
| 225 assert(addr == base() || addr + sz == end(), "Can not exclude from middle"); | |
| 226 size_t new_size = size() - sz; | |
| 227 | |
| 228 if (addr == base()) { | |
| 229 set_base(addr + sz); | |
| 230 } | |
| 231 set_size(new_size); | |
| 232 } | |
| 233 | |
| 234 void expand_region(address addr, size_t sz) { | |
| 235 assert(adjacent_to(addr, sz), "Not adjacent regions"); | |
| 236 if (base() == addr + sz) { | |
| 237 set_base(addr); | |
| 238 } | |
| 239 set_size(size() + sz); | |
| 240 } | |
| 241 | |
| 242 protected: | |
| 243 void set_base(address base) { | |
| 244 assert(base != NULL, "Sanity check"); | |
| 245 _base_address = base; | |
| 246 } | |
| 247 | |
| 248 void set_size(size_t size) { | |
| 249 assert(size > 0, "Sanity check"); | |
| 250 _size = size; | |
| 251 } | |
| 252 }; | |
| 253 | |
| 254 | |
| 255 class CommittedMemoryRegion : public VirtualMemoryRegion { | |
| 256 private: | |
| 257 NativeCallStack _stack; | |
| 258 | |
| 259 public: | |
| 260 CommittedMemoryRegion(address addr, size_t size, const NativeCallStack& stack) : | |
| 261 VirtualMemoryRegion(addr, size), _stack(stack) { } | |
| 262 | |
| 263 inline int compare(const CommittedMemoryRegion& rgn) const { | |
| 264 if (overlap_region(rgn.base(), rgn.size()) || | |
| 265 adjacent_to (rgn.base(), rgn.size())) { | |
| 266 return 0; | |
| 267 } else { | |
| 268 if (base() == rgn.base()) { | |
| 269 return 0; | |
| 270 } else if (base() > rgn.base()) { | |
| 271 return 1; | |
| 272 } else { | |
| 273 return -1; | |
| 274 } | |
| 275 } | |
| 276 } | |
| 277 | |
| 278 inline bool equals(const CommittedMemoryRegion& rgn) const { | |
| 279 return compare(rgn) == 0; | |
| 280 } | |
| 281 | |
| 282 inline void set_call_stack(const NativeCallStack& stack) { _stack = stack; } | |
| 283 inline const NativeCallStack* call_stack() const { return &_stack; } | |
| 284 }; | |
| 285 | |
| 286 | |
| 287 typedef LinkedListIterator<CommittedMemoryRegion> CommittedRegionIterator; | |
| 288 | |
| 289 int compare_committed_region(const CommittedMemoryRegion&, const CommittedMemoryRegion&); | |
| 290 class ReservedMemoryRegion : public VirtualMemoryRegion { | |
| 291 private: | |
| 292 SortedLinkedList<CommittedMemoryRegion, compare_committed_region> | |
| 293 _committed_regions; | |
| 294 | |
| 295 NativeCallStack _stack; | |
| 296 MEMFLAGS _flag; | |
| 297 | |
| 298 bool _all_committed; | |
| 299 | |
| 300 public: | |
| 301 ReservedMemoryRegion(address base, size_t size, const NativeCallStack& stack, | |
| 302 MEMFLAGS flag = mtNone) : | |
| 303 VirtualMemoryRegion(base, size), _stack(stack), _flag(flag), | |
| 304 _all_committed(false) { } | |
| 305 | |
| 306 | |
| 307 ReservedMemoryRegion(address base, size_t size) : | |
| 20364 | 308 VirtualMemoryRegion(base, size), _stack(NativeCallStack::EMPTY_STACK), _flag(mtNone), |
| 20360 | 309 _all_committed(false) { } |
| 310 | |
| 311 // Copy constructor | |
| 312 ReservedMemoryRegion(const ReservedMemoryRegion& rr) : | |
| 313 VirtualMemoryRegion(rr.base(), rr.size()) { | |
| 314 *this = rr; | |
| 315 } | |
| 316 | |
| 317 inline void set_call_stack(const NativeCallStack& stack) { _stack = stack; } | |
| 318 inline const NativeCallStack* call_stack() const { return &_stack; } | |
| 319 | |
| 320 void set_flag(MEMFLAGS flag); | |
| 321 inline MEMFLAGS flag() const { return _flag; } | |
| 322 | |
| 323 inline int compare(const ReservedMemoryRegion& rgn) const { | |
| 324 if (overlap_region(rgn.base(), rgn.size())) { | |
| 325 return 0; | |
| 326 } else { | |
| 327 if (base() == rgn.base()) { | |
| 328 return 0; | |
| 329 } else if (base() > rgn.base()) { | |
| 330 return 1; | |
| 331 } else { | |
| 332 return -1; | |
| 333 } | |
| 334 } | |
| 335 } | |
| 336 | |
| 337 inline bool equals(const ReservedMemoryRegion& rgn) const { | |
| 338 return compare(rgn) == 0; | |
| 339 } | |
| 340 | |
| 341 bool add_committed_region(address addr, size_t size, const NativeCallStack& stack); | |
| 342 bool remove_uncommitted_region(address addr, size_t size); | |
| 343 | |
| 344 size_t committed_size() const; | |
| 345 | |
| 346 // move committed regions that higher than specified address to | |
| 347 // the new region | |
| 348 void move_committed_regions(address addr, ReservedMemoryRegion& rgn); | |
| 349 | |
| 350 inline bool all_committed() const { return _all_committed; } | |
| 351 void set_all_committed(bool b); | |
| 352 | |
| 353 CommittedRegionIterator iterate_committed_regions() const { | |
| 354 return CommittedRegionIterator(_committed_regions.head()); | |
| 355 } | |
| 356 | |
| 357 ReservedMemoryRegion& operator= (const ReservedMemoryRegion& other) { | |
| 358 set_base(other.base()); | |
| 359 set_size(other.size()); | |
| 360 | |
| 361 _stack = *other.call_stack(); | |
| 362 _flag = other.flag(); | |
| 363 _all_committed = other.all_committed(); | |
| 364 if (other.all_committed()) { | |
| 365 set_all_committed(true); | |
| 366 } else { | |
| 367 CommittedRegionIterator itr = other.iterate_committed_regions(); | |
| 368 const CommittedMemoryRegion* rgn = itr.next(); | |
| 369 while (rgn != NULL) { | |
| 370 _committed_regions.add(*rgn); | |
| 371 rgn = itr.next(); | |
| 372 } | |
| 373 } | |
| 374 return *this; | |
| 375 } | |
| 376 | |
| 377 private: | |
| 378 // The committed region contains the uncommitted region, subtract the uncommitted | |
| 379 // region from this committed region | |
| 380 bool remove_uncommitted_region(LinkedListNode<CommittedMemoryRegion>* node, | |
| 381 address addr, size_t sz); | |
| 382 | |
| 383 bool add_committed_region(const CommittedMemoryRegion& rgn) { | |
| 384 assert(rgn.base() != NULL, "Invalid base address"); | |
| 385 assert(size() > 0, "Invalid size"); | |
| 386 return _committed_regions.add(rgn) != NULL; | |
| 387 } | |
| 388 }; | |
| 389 | |
| 390 int compare_reserved_region_base(const ReservedMemoryRegion& r1, const ReservedMemoryRegion& r2); | |
| 391 | |
| 392 class VirtualMemoryWalker : public StackObj { | |
| 393 public: | |
| 394 virtual bool do_allocation_site(const ReservedMemoryRegion* rgn) { return false; } | |
| 395 }; | |
| 396 | |
| 397 // Main class called from MemTracker to track virtual memory allocations, commits and releases. | |
| 398 class VirtualMemoryTracker : AllStatic { | |
| 399 public: | |
| 400 static bool initialize(NMT_TrackingLevel level); | |
| 401 | |
|
20363
36c9011aaead
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
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402 // Late phase initialization |
|
36c9011aaead
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
parents:
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403 static bool late_initialize(NMT_TrackingLevel level); |
|
36c9011aaead
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
parents:
20360
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changeset
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404 |
| 20360 | 405 static bool add_reserved_region (address base_addr, size_t size, const NativeCallStack& stack, |
| 406 MEMFLAGS flag = mtNone, bool all_committed = false); | |
| 407 | |
| 408 static bool add_committed_region (address base_addr, size_t size, const NativeCallStack& stack); | |
| 409 static bool remove_uncommitted_region (address base_addr, size_t size); | |
| 410 static bool remove_released_region (address base_addr, size_t size); | |
| 411 static void set_reserved_region_type (address addr, MEMFLAGS flag); | |
| 412 | |
| 413 // Walk virtual memory data structure for creating baseline, etc. | |
| 414 static bool walk_virtual_memory(VirtualMemoryWalker* walker); | |
| 415 | |
| 416 static bool transition(NMT_TrackingLevel from, NMT_TrackingLevel to); | |
| 417 | |
| 418 private: | |
|
20363
36c9011aaead
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
zgu
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419 static SortedLinkedList<ReservedMemoryRegion, compare_reserved_region_base>* _reserved_regions; |
| 20360 | 420 }; |
| 421 | |
| 422 | |
| 423 #endif // INCLUDE_NMT | |
| 424 | |
| 425 #endif // SHARE_VM_SERVICES_VIRTUAL_MEMORY_TRACKER_HPP |