Mercurial > hg > truffle
annotate src/share/vm/services/virtualMemoryTracker.hpp @ 20488:9c8439756c05
8052313: Backport CDS tests from JDK-9 to jdk8_u40
Summary: Copied CDS tests from jdk-9 to jdk8u40
Reviewed-by: ccheung, dholmes
author | mseledtsov |
---|---|
date | Fri, 19 Sep 2014 11:12:39 -0400 |
parents | c6211b707068 |
children | 417e3b8d04c5 |
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 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) : | |
20364 | 323 VirtualMemoryRegion(base, size), _stack(NativeCallStack::EMPTY_STACK), _flag(mtNone), |
20360 | 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 | |
20363
36c9011aaead
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
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417 // Late phase initialization |
36c9011aaead
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
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418 static bool late_initialize(NMT_TrackingLevel level); |
36c9011aaead
8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
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419 |
20360 | 420 static bool add_reserved_region (address base_addr, size_t size, const NativeCallStack& stack, |
421 MEMFLAGS flag = mtNone, bool all_committed = false); | |
422 | |
423 static bool add_committed_region (address base_addr, size_t size, const NativeCallStack& stack); | |
424 static bool remove_uncommitted_region (address base_addr, size_t size); | |
425 static bool remove_released_region (address base_addr, size_t size); | |
426 static void set_reserved_region_type (address addr, MEMFLAGS flag); | |
427 | |
428 // Walk virtual memory data structure for creating baseline, etc. | |
429 static bool walk_virtual_memory(VirtualMemoryWalker* walker); | |
430 | |
431 static bool transition(NMT_TrackingLevel from, NMT_TrackingLevel to); | |
432 | |
433 private: | |
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8054368: nsk/jdi/VirtualMachine/exit/exit002 crash with detail tracking on (NMT2)
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434 static SortedLinkedList<ReservedMemoryRegion, compare_reserved_region_base>* _reserved_regions; |
20360 | 435 }; |
436 | |
437 | |
438 #endif // INCLUDE_NMT | |
439 | |
440 #endif // SHARE_VM_SERVICES_VIRTUAL_MEMORY_TRACKER_HPP |