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annotate src/share/vm/services/virtualMemoryTracker.hpp @ 21183:565d7dbae77c
LIRGenerator: replace doBlockStart/doBlockEnd with an AutoCloseable.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Mon, 20 Apr 2015 11:16:15 +0200 |
parents | 417e3b8d04c5 |
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rev | line source |
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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 | |
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402 // Late phase initialization |
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403 static bool late_initialize(NMT_TrackingLevel level); |
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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: | |
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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 |