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 void reset() {
|
|
66 _reserved = 0;
|
|
67 _committed = 0;
|
|
68 }
|
|
69
|
|
70 inline size_t reserved() const { return _reserved; }
|
|
71 inline size_t committed() const { return _committed; }
|
|
72 };
|
|
73
|
|
74 // Virtual memory allocation site, keeps track where the virtual memory is reserved.
|
|
75 class VirtualMemoryAllocationSite : public AllocationSite<VirtualMemory> {
|
|
76 public:
|
|
77 VirtualMemoryAllocationSite(const NativeCallStack& stack) :
|
|
78 AllocationSite<VirtualMemory>(stack) { }
|
|
79
|
|
80 inline void reserve_memory(size_t sz) { data()->reserve_memory(sz); }
|
|
81 inline void commit_memory (size_t sz) { data()->commit_memory(sz); }
|
|
82 inline void uncommit_memory(size_t sz) { data()->uncommit_memory(sz); }
|
|
83 inline void release_memory(size_t sz) { data()->release_memory(sz); }
|
|
84 inline size_t reserved() const { return peek()->reserved(); }
|
|
85 inline size_t committed() const { return peek()->committed(); }
|
|
86 };
|
|
87
|
|
88 class VirtualMemorySummary;
|
|
89
|
|
90 // This class represents a snapshot of virtual memory at a given time.
|
|
91 // The latest snapshot is saved in a static area.
|
|
92 class VirtualMemorySnapshot : public ResourceObj {
|
|
93 friend class VirtualMemorySummary;
|
|
94
|
|
95 private:
|
|
96 VirtualMemory _virtual_memory[mt_number_of_types];
|
|
97
|
|
98 public:
|
|
99 inline VirtualMemory* by_type(MEMFLAGS flag) {
|
|
100 int index = NMTUtil::flag_to_index(flag);
|
|
101 return &_virtual_memory[index];
|
|
102 }
|
|
103
|
|
104 inline VirtualMemory* by_index(int index) {
|
|
105 assert(index >= 0, "Index out of bound");
|
|
106 assert(index < mt_number_of_types, "Index out of bound");
|
|
107 return &_virtual_memory[index];
|
|
108 }
|
|
109
|
|
110 inline size_t total_reserved() const {
|
|
111 size_t amount = 0;
|
|
112 for (int index = 0; index < mt_number_of_types; index ++) {
|
|
113 amount += _virtual_memory[index].reserved();
|
|
114 }
|
|
115 return amount;
|
|
116 }
|
|
117
|
|
118 inline size_t total_committed() const {
|
|
119 size_t amount = 0;
|
|
120 for (int index = 0; index < mt_number_of_types; index ++) {
|
|
121 amount += _virtual_memory[index].committed();
|
|
122 }
|
|
123 return amount;
|
|
124 }
|
|
125
|
|
126 inline void reset() {
|
|
127 for (int index = 0; index < mt_number_of_types; index ++) {
|
|
128 _virtual_memory[index].reset();
|
|
129 }
|
|
130 }
|
|
131
|
|
132 void copy_to(VirtualMemorySnapshot* s) {
|
|
133 for (int index = 0; index < mt_number_of_types; index ++) {
|
|
134 s->_virtual_memory[index] = _virtual_memory[index];
|
|
135 }
|
|
136 }
|
|
137 };
|
|
138
|
|
139 class VirtualMemorySummary : AllStatic {
|
|
140 public:
|
|
141 static void initialize();
|
|
142
|
|
143 static inline void record_reserved_memory(size_t size, MEMFLAGS flag) {
|
|
144 as_snapshot()->by_type(flag)->reserve_memory(size);
|
|
145 }
|
|
146
|
|
147 static inline void record_committed_memory(size_t size, MEMFLAGS flag) {
|
|
148 as_snapshot()->by_type(flag)->commit_memory(size);
|
|
149 }
|
|
150
|
|
151 static inline void record_uncommitted_memory(size_t size, MEMFLAGS flag) {
|
|
152 as_snapshot()->by_type(flag)->uncommit_memory(size);
|
|
153 }
|
|
154
|
|
155 static inline void record_released_memory(size_t size, MEMFLAGS flag) {
|
|
156 as_snapshot()->by_type(flag)->release_memory(size);
|
|
157 }
|
|
158
|
|
159 // Move virtual memory from one memory type to another.
|
|
160 // Virtual memory can be reserved before it is associated with a memory type, and tagged
|
|
161 // as 'unknown'. Once the memory is tagged, the virtual memory will be moved from 'unknown'
|
|
162 // type to specified memory type.
|
|
163 static inline void move_reserved_memory(MEMFLAGS from, MEMFLAGS to, size_t size) {
|
|
164 as_snapshot()->by_type(from)->release_memory(size);
|
|
165 as_snapshot()->by_type(to)->reserve_memory(size);
|
|
166 }
|
|
167
|
|
168 static inline void move_committed_memory(MEMFLAGS from, MEMFLAGS to, size_t size) {
|
|
169 as_snapshot()->by_type(from)->uncommit_memory(size);
|
|
170 as_snapshot()->by_type(to)->commit_memory(size);
|
|
171 }
|
|
172
|
|
173 static inline void snapshot(VirtualMemorySnapshot* s) {
|
|
174 as_snapshot()->copy_to(s);
|
|
175 }
|
|
176
|
|
177 static inline void reset() {
|
|
178 as_snapshot()->reset();
|
|
179 }
|
|
180
|
|
181 static VirtualMemorySnapshot* as_snapshot() {
|
|
182 return (VirtualMemorySnapshot*)_snapshot;
|
|
183 }
|
|
184
|
|
185 private:
|
|
186 static size_t _snapshot[CALC_OBJ_SIZE_IN_TYPE(VirtualMemorySnapshot, size_t)];
|
|
187 };
|
|
188
|
|
189
|
|
190
|
|
191 /*
|
|
192 * A virtual memory region
|
|
193 */
|
|
194 class VirtualMemoryRegion VALUE_OBJ_CLASS_SPEC {
|
|
195 private:
|
|
196 address _base_address;
|
|
197 size_t _size;
|
|
198
|
|
199 public:
|
|
200 VirtualMemoryRegion(address addr, size_t size) :
|
|
201 _base_address(addr), _size(size) {
|
|
202 assert(addr != NULL, "Invalid address");
|
|
203 assert(size > 0, "Invalid size");
|
|
204 }
|
|
205
|
|
206 inline address base() const { return _base_address; }
|
|
207 inline address end() const { return base() + size(); }
|
|
208 inline size_t size() const { return _size; }
|
|
209
|
|
210 inline bool is_empty() const { return size() == 0; }
|
|
211
|
|
212 inline bool contain_address(address addr) const {
|
|
213 return (addr >= base() && addr < end());
|
|
214 }
|
|
215
|
|
216
|
|
217 inline bool contain_region(address addr, size_t size) const {
|
|
218 return contain_address(addr) && contain_address(addr + size - 1);
|
|
219 }
|
|
220
|
|
221 inline bool same_region(address addr, size_t sz) const {
|
|
222 return (addr == base() && sz == size());
|
|
223 }
|
|
224
|
|
225
|
|
226 inline bool overlap_region(address addr, size_t sz) const {
|
|
227 VirtualMemoryRegion rgn(addr, sz);
|
|
228 return contain_address(addr) ||
|
|
229 contain_address(addr + sz - 1) ||
|
|
230 rgn.contain_address(base()) ||
|
|
231 rgn.contain_address(end() - 1);
|
|
232 }
|
|
233
|
|
234 inline bool adjacent_to(address addr, size_t sz) const {
|
|
235 return (addr == end() || (addr + sz) == base());
|
|
236 }
|
|
237
|
|
238 void exclude_region(address addr, size_t sz) {
|
|
239 assert(contain_region(addr, sz), "Not containment");
|
|
240 assert(addr == base() || addr + sz == end(), "Can not exclude from middle");
|
|
241 size_t new_size = size() - sz;
|
|
242
|
|
243 if (addr == base()) {
|
|
244 set_base(addr + sz);
|
|
245 }
|
|
246 set_size(new_size);
|
|
247 }
|
|
248
|
|
249 void expand_region(address addr, size_t sz) {
|
|
250 assert(adjacent_to(addr, sz), "Not adjacent regions");
|
|
251 if (base() == addr + sz) {
|
|
252 set_base(addr);
|
|
253 }
|
|
254 set_size(size() + sz);
|
|
255 }
|
|
256
|
|
257 protected:
|
|
258 void set_base(address base) {
|
|
259 assert(base != NULL, "Sanity check");
|
|
260 _base_address = base;
|
|
261 }
|
|
262
|
|
263 void set_size(size_t size) {
|
|
264 assert(size > 0, "Sanity check");
|
|
265 _size = size;
|
|
266 }
|
|
267 };
|
|
268
|
|
269
|
|
270 class CommittedMemoryRegion : public VirtualMemoryRegion {
|
|
271 private:
|
|
272 NativeCallStack _stack;
|
|
273
|
|
274 public:
|
|
275 CommittedMemoryRegion(address addr, size_t size, const NativeCallStack& stack) :
|
|
276 VirtualMemoryRegion(addr, size), _stack(stack) { }
|
|
277
|
|
278 inline int compare(const CommittedMemoryRegion& rgn) const {
|
|
279 if (overlap_region(rgn.base(), rgn.size()) ||
|
|
280 adjacent_to (rgn.base(), rgn.size())) {
|
|
281 return 0;
|
|
282 } else {
|
|
283 if (base() == rgn.base()) {
|
|
284 return 0;
|
|
285 } else if (base() > rgn.base()) {
|
|
286 return 1;
|
|
287 } else {
|
|
288 return -1;
|
|
289 }
|
|
290 }
|
|
291 }
|
|
292
|
|
293 inline bool equals(const CommittedMemoryRegion& rgn) const {
|
|
294 return compare(rgn) == 0;
|
|
295 }
|
|
296
|
|
297 inline void set_call_stack(const NativeCallStack& stack) { _stack = stack; }
|
|
298 inline const NativeCallStack* call_stack() const { return &_stack; }
|
|
299 };
|
|
300
|
|
301
|
|
302 typedef LinkedListIterator<CommittedMemoryRegion> CommittedRegionIterator;
|
|
303
|
|
304 int compare_committed_region(const CommittedMemoryRegion&, const CommittedMemoryRegion&);
|
|
305 class ReservedMemoryRegion : public VirtualMemoryRegion {
|
|
306 private:
|
|
307 SortedLinkedList<CommittedMemoryRegion, compare_committed_region>
|
|
308 _committed_regions;
|
|
309
|
|
310 NativeCallStack _stack;
|
|
311 MEMFLAGS _flag;
|
|
312
|
|
313 bool _all_committed;
|
|
314
|
|
315 public:
|
|
316 ReservedMemoryRegion(address base, size_t size, const NativeCallStack& stack,
|
|
317 MEMFLAGS flag = mtNone) :
|
|
318 VirtualMemoryRegion(base, size), _stack(stack), _flag(flag),
|
|
319 _all_committed(false) { }
|
|
320
|
|
321
|
|
322 ReservedMemoryRegion(address base, size_t size) :
|
|
323 VirtualMemoryRegion(base, size), _stack(emptyStack), _flag(mtNone),
|
|
324 _all_committed(false) { }
|
|
325
|
|
326 // Copy constructor
|
|
327 ReservedMemoryRegion(const ReservedMemoryRegion& rr) :
|
|
328 VirtualMemoryRegion(rr.base(), rr.size()) {
|
|
329 *this = rr;
|
|
330 }
|
|
331
|
|
332 inline void set_call_stack(const NativeCallStack& stack) { _stack = stack; }
|
|
333 inline const NativeCallStack* call_stack() const { return &_stack; }
|
|
334
|
|
335 void set_flag(MEMFLAGS flag);
|
|
336 inline MEMFLAGS flag() const { return _flag; }
|
|
337
|
|
338 inline int compare(const ReservedMemoryRegion& rgn) const {
|
|
339 if (overlap_region(rgn.base(), rgn.size())) {
|
|
340 return 0;
|
|
341 } else {
|
|
342 if (base() == rgn.base()) {
|
|
343 return 0;
|
|
344 } else if (base() > rgn.base()) {
|
|
345 return 1;
|
|
346 } else {
|
|
347 return -1;
|
|
348 }
|
|
349 }
|
|
350 }
|
|
351
|
|
352 inline bool equals(const ReservedMemoryRegion& rgn) const {
|
|
353 return compare(rgn) == 0;
|
|
354 }
|
|
355
|
|
356 bool add_committed_region(address addr, size_t size, const NativeCallStack& stack);
|
|
357 bool remove_uncommitted_region(address addr, size_t size);
|
|
358
|
|
359 size_t committed_size() const;
|
|
360
|
|
361 // move committed regions that higher than specified address to
|
|
362 // the new region
|
|
363 void move_committed_regions(address addr, ReservedMemoryRegion& rgn);
|
|
364
|
|
365 inline bool all_committed() const { return _all_committed; }
|
|
366 void set_all_committed(bool b);
|
|
367
|
|
368 CommittedRegionIterator iterate_committed_regions() const {
|
|
369 return CommittedRegionIterator(_committed_regions.head());
|
|
370 }
|
|
371
|
|
372 ReservedMemoryRegion& operator= (const ReservedMemoryRegion& other) {
|
|
373 set_base(other.base());
|
|
374 set_size(other.size());
|
|
375
|
|
376 _stack = *other.call_stack();
|
|
377 _flag = other.flag();
|
|
378 _all_committed = other.all_committed();
|
|
379 if (other.all_committed()) {
|
|
380 set_all_committed(true);
|
|
381 } else {
|
|
382 CommittedRegionIterator itr = other.iterate_committed_regions();
|
|
383 const CommittedMemoryRegion* rgn = itr.next();
|
|
384 while (rgn != NULL) {
|
|
385 _committed_regions.add(*rgn);
|
|
386 rgn = itr.next();
|
|
387 }
|
|
388 }
|
|
389 return *this;
|
|
390 }
|
|
391
|
|
392 private:
|
|
393 // The committed region contains the uncommitted region, subtract the uncommitted
|
|
394 // region from this committed region
|
|
395 bool remove_uncommitted_region(LinkedListNode<CommittedMemoryRegion>* node,
|
|
396 address addr, size_t sz);
|
|
397
|
|
398 bool add_committed_region(const CommittedMemoryRegion& rgn) {
|
|
399 assert(rgn.base() != NULL, "Invalid base address");
|
|
400 assert(size() > 0, "Invalid size");
|
|
401 return _committed_regions.add(rgn) != NULL;
|
|
402 }
|
|
403 };
|
|
404
|
|
405 int compare_reserved_region_base(const ReservedMemoryRegion& r1, const ReservedMemoryRegion& r2);
|
|
406
|
|
407 class VirtualMemoryWalker : public StackObj {
|
|
408 public:
|
|
409 virtual bool do_allocation_site(const ReservedMemoryRegion* rgn) { return false; }
|
|
410 };
|
|
411
|
|
412 // Main class called from MemTracker to track virtual memory allocations, commits and releases.
|
|
413 class VirtualMemoryTracker : AllStatic {
|
|
414 public:
|
|
415 static bool initialize(NMT_TrackingLevel level);
|
|
416
|
|
417 static bool add_reserved_region (address base_addr, size_t size, const NativeCallStack& stack,
|
|
418 MEMFLAGS flag = mtNone, bool all_committed = false);
|
|
419
|
|
420 static bool add_committed_region (address base_addr, size_t size, const NativeCallStack& stack);
|
|
421 static bool remove_uncommitted_region (address base_addr, size_t size);
|
|
422 static bool remove_released_region (address base_addr, size_t size);
|
|
423 static void set_reserved_region_type (address addr, MEMFLAGS flag);
|
|
424
|
|
425 // Walk virtual memory data structure for creating baseline, etc.
|
|
426 static bool walk_virtual_memory(VirtualMemoryWalker* walker);
|
|
427
|
|
428 static bool transition(NMT_TrackingLevel from, NMT_TrackingLevel to);
|
|
429
|
|
430 private:
|
|
431 static SortedLinkedList<ReservedMemoryRegion, compare_reserved_region_base> _reserved_regions;
|
|
432 };
|
|
433
|
|
434
|
|
435 #endif // INCLUDE_NMT
|
|
436
|
|
437 #endif // SHARE_VM_SERVICES_VIRTUAL_MEMORY_TRACKER_HPP
|