Mercurial > hg > graal-compiler
annotate src/share/vm/services/memTracker.hpp @ 6983:070d523b96a7
8001471: Klass::cast() does nothing
Summary: Remove function Klass::cast() and calls to it.
Reviewed-by: dholmes, coleenp
author | hseigel |
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date | Mon, 12 Nov 2012 16:15:05 -0500 |
parents | fb3190e77d3c |
children | f34d701e952e |
rev | line source |
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6197 | 1 /* |
2 * Copyright (c) 2012, 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_MEM_TRACKER_HPP | |
26 #define SHARE_VM_SERVICES_MEM_TRACKER_HPP | |
27 | |
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28 #include "utilities/macros.hpp" |
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29 |
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30 #if !INCLUDE_NMT |
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31 |
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32 #include "utilities/ostream.hpp" |
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33 |
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34 class BaselineOutputer : public StackObj { |
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35 |
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36 }; |
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37 |
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38 class BaselineTTYOutputer : public BaselineOutputer { |
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39 public: |
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40 BaselineTTYOutputer(outputStream* st) { } |
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41 }; |
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42 |
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43 class MemTracker : AllStatic { |
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44 public: |
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45 enum ShutdownReason { |
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46 NMT_shutdown_none, // no shutdown requested |
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47 NMT_shutdown_user, // user requested shutdown |
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48 NMT_normal, // normal shutdown, process exit |
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49 NMT_out_of_memory, // shutdown due to out of memory |
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50 NMT_initialization, // shutdown due to initialization failure |
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51 NMT_use_malloc_only, // can not combine NMT with UseMallocOnly flag |
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52 NMT_error_reporting, // shutdown by vmError::report_and_die() |
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53 NMT_out_of_generation, // running out of generation queue |
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54 NMT_sequence_overflow // overflow the sequence number |
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55 }; |
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56 |
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57 |
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58 public: |
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59 static inline void init_tracking_options(const char* option_line) { } |
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60 static inline bool is_on() { return false; } |
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61 static const char* reason() { return "Native memory tracking is not implemented"; } |
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62 static inline bool can_walk_stack() { return false; } |
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63 |
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64 static inline void bootstrap_single_thread() { } |
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65 static inline void bootstrap_multi_thread() { } |
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66 static inline void start() { } |
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67 |
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68 static inline void record_malloc(address addr, size_t size, MEMFLAGS flags, |
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69 address pc = 0, Thread* thread = NULL) { } |
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70 static inline void record_free(address addr, MEMFLAGS flags, Thread* thread = NULL) { } |
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71 static inline void record_realloc(address old_addr, address new_addr, size_t size, |
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72 MEMFLAGS flags, address pc = 0, Thread* thread = NULL) { } |
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73 static inline void record_arena_size(address addr, size_t size) { } |
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74 static inline void record_virtual_memory_reserve(address addr, size_t size, |
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75 address pc = 0, Thread* thread = NULL) { } |
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76 static inline void record_virtual_memory_commit(address addr, size_t size, |
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77 address pc = 0, Thread* thread = NULL) { } |
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78 static inline void record_virtual_memory_uncommit(address addr, size_t size, |
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79 Thread* thread = NULL) { } |
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80 static inline void record_virtual_memory_release(address addr, size_t size, |
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81 Thread* thread = NULL) { } |
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82 static inline void record_virtual_memory_type(address base, MEMFLAGS flags, |
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83 Thread* thread = NULL) { } |
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84 static inline bool baseline() { return false; } |
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85 static inline bool has_baseline() { return false; } |
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86 |
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87 static void shutdown(ShutdownReason reason) { } |
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88 static inline bool shutdown_in_progress() { } |
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89 static bool print_memory_usage(BaselineOutputer& out, size_t unit, |
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90 bool summary_only = true) { } |
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91 static bool compare_memory_usage(BaselineOutputer& out, size_t unit, |
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92 bool summary_only = true) { } |
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93 |
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94 static inline void sync() { } |
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95 static inline void thread_exiting(JavaThread* thread) { } |
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96 |
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97 }; |
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98 |
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99 |
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100 #else // !INCLUDE_NMT |
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101 |
6197 | 102 #include "memory/allocation.hpp" |
103 #include "runtime/globals.hpp" | |
104 #include "runtime/mutex.hpp" | |
105 #include "runtime/os.hpp" | |
106 #include "runtime/thread.hpp" | |
107 #include "services/memPtr.hpp" | |
108 #include "services/memRecorder.hpp" | |
109 #include "services/memSnapshot.hpp" | |
110 #include "services/memTrackWorker.hpp" | |
111 | |
112 #ifdef SOLARIS | |
113 #include "thread_solaris.inline.hpp" | |
114 #endif | |
115 | |
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116 extern bool NMT_track_callsite; |
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117 |
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118 #ifdef ASSERT |
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119 #define DEBUG_CALLER_PC (NMT_track_callsite ? os::get_caller_pc(2) : 0) |
6197 | 120 #else |
121 #define DEBUG_CALLER_PC 0 | |
122 #endif | |
123 | |
124 // The thread closure walks threads to collect per-thread | |
125 // memory recorders at NMT sync point | |
126 class SyncThreadRecorderClosure : public ThreadClosure { | |
127 private: | |
128 int _thread_count; | |
129 | |
130 public: | |
131 SyncThreadRecorderClosure() { | |
132 _thread_count =0; | |
133 } | |
134 | |
135 void do_thread(Thread* thread); | |
136 int get_thread_count() const { | |
137 return _thread_count; | |
138 } | |
139 }; | |
140 | |
141 class BaselineOutputer; | |
142 class MemSnapshot; | |
143 class MemTrackWorker; | |
144 class Thread; | |
145 /* | |
146 * MemTracker is the 'gate' class to native memory tracking runtime. | |
147 */ | |
148 class MemTracker : AllStatic { | |
149 friend class MemTrackWorker; | |
150 friend class MemSnapshot; | |
151 friend class SyncThreadRecorderClosure; | |
152 | |
153 // NMT state | |
154 enum NMTStates { | |
155 NMT_uninited, // not yet initialized | |
156 NMT_bootstrapping_single_thread, // bootstrapping, VM is in single thread mode | |
157 NMT_bootstrapping_multi_thread, // bootstrapping, VM is about to enter multi-thread mode | |
158 NMT_started, // NMT fully started | |
159 NMT_shutdown_pending, // shutdown pending | |
160 NMT_final_shutdown, // in final phase of shutdown | |
161 NMT_shutdown // shutdown | |
162 }; | |
163 | |
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164 public: |
6197 | 165 // native memory tracking level |
166 enum NMTLevel { | |
167 NMT_off, // native memory tracking is off | |
168 NMT_summary, // don't track callsite | |
169 NMT_detail // track callsite also | |
170 }; | |
171 | |
172 enum ShutdownReason { | |
173 NMT_shutdown_none, // no shutdown requested | |
174 NMT_shutdown_user, // user requested shutdown | |
175 NMT_normal, // normal shutdown, process exit | |
176 NMT_out_of_memory, // shutdown due to out of memory | |
177 NMT_initialization, // shutdown due to initialization failure | |
178 NMT_use_malloc_only, // can not combine NMT with UseMallocOnly flag | |
179 NMT_error_reporting, // shutdown by vmError::report_and_die() | |
180 NMT_out_of_generation, // running out of generation queue | |
181 NMT_sequence_overflow // overflow the sequence number | |
182 }; | |
183 | |
184 public: | |
185 // initialize NMT tracking level from command line options, called | |
186 // from VM command line parsing code | |
187 static void init_tracking_options(const char* option_line); | |
188 | |
189 // if NMT is enabled to record memory activities | |
190 static inline bool is_on() { | |
191 return (_tracking_level >= NMT_summary && | |
192 _state >= NMT_bootstrapping_single_thread); | |
193 } | |
194 | |
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195 static inline enum NMTLevel tracking_level() { |
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196 return _tracking_level; |
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197 } |
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198 |
6197 | 199 // user readable reason for shutting down NMT |
200 static const char* reason() { | |
201 switch(_reason) { | |
202 case NMT_shutdown_none: | |
203 return "Native memory tracking is not enabled"; | |
204 case NMT_shutdown_user: | |
205 return "Native memory tracking has been shutdown by user"; | |
206 case NMT_normal: | |
207 return "Native memory tracking has been shutdown due to process exiting"; | |
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208 case NMT_out_of_memory: |
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209 return "Native memory tracking has been shutdown due to out of native memory"; |
6197 | 210 case NMT_initialization: |
211 return "Native memory tracking failed to initialize"; | |
212 case NMT_error_reporting: | |
213 return "Native memory tracking has been shutdown due to error reporting"; | |
214 case NMT_out_of_generation: | |
215 return "Native memory tracking has been shutdown due to running out of generation buffer"; | |
216 case NMT_sequence_overflow: | |
217 return "Native memory tracking has been shutdown due to overflow the sequence number"; | |
218 case NMT_use_malloc_only: | |
219 return "Native memory tracking is not supported when UseMallocOnly is on"; | |
220 default: | |
221 ShouldNotReachHere(); | |
222 return NULL; | |
223 } | |
224 } | |
225 | |
226 // test if we can walk native stack | |
227 static bool can_walk_stack() { | |
228 // native stack is not walkable during bootstrapping on sparc | |
229 #if defined(SPARC) | |
230 return (_state == NMT_started); | |
231 #else | |
232 return (_state >= NMT_bootstrapping_single_thread && _state <= NMT_started); | |
233 #endif | |
234 } | |
235 | |
236 // if native memory tracking tracks callsite | |
237 static inline bool track_callsite() { return _tracking_level == NMT_detail; } | |
238 | |
239 // shutdown native memory tracking capability. Native memory tracking | |
240 // can be shutdown by VM when it encounters low memory scenarios. | |
241 // Memory tracker should gracefully shutdown itself, and preserve the | |
242 // latest memory statistics for post morten diagnosis. | |
243 static void shutdown(ShutdownReason reason); | |
244 | |
245 // if there is shutdown requested | |
246 static inline bool shutdown_in_progress() { | |
247 return (_state >= NMT_shutdown_pending); | |
248 } | |
249 | |
250 // bootstrap native memory tracking, so it can start to collect raw data | |
251 // before worker thread can start | |
252 | |
253 // the first phase of bootstrapping, when VM still in single-threaded mode | |
254 static void bootstrap_single_thread(); | |
255 // the second phase of bootstrapping, VM is about or already in multi-threaded mode | |
256 static void bootstrap_multi_thread(); | |
257 | |
258 | |
259 // start() has to be called when VM still in single thread mode, but after | |
260 // command line option parsing is done. | |
261 static void start(); | |
262 | |
263 // record a 'malloc' call | |
264 static inline void record_malloc(address addr, size_t size, MEMFLAGS flags, | |
265 address pc = 0, Thread* thread = NULL) { | |
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266 if (is_on() && NMT_CAN_TRACK(flags)) { |
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267 assert(size > 0, "Sanity check"); |
6197 | 268 create_memory_record(addr, (flags|MemPointerRecord::malloc_tag()), size, pc, thread); |
269 } | |
270 } | |
271 // record a 'free' call | |
272 static inline void record_free(address addr, MEMFLAGS flags, Thread* thread = NULL) { | |
273 if (is_on() && NMT_CAN_TRACK(flags)) { | |
274 create_memory_record(addr, MemPointerRecord::free_tag(), 0, 0, thread); | |
275 } | |
276 } | |
277 // record a 'realloc' call | |
278 static inline void record_realloc(address old_addr, address new_addr, size_t size, | |
279 MEMFLAGS flags, address pc = 0, Thread* thread = NULL) { | |
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280 if (is_on() && NMT_CAN_TRACK(flags)) { |
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281 assert(size > 0, "Sanity check"); |
6197 | 282 record_free(old_addr, flags, thread); |
283 record_malloc(new_addr, size, flags, pc, thread); | |
284 } | |
285 } | |
286 | |
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287 // record arena memory size |
6197 | 288 static inline void record_arena_size(address addr, size_t size) { |
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289 // we add a positive offset to arena address, so we can have arena memory record |
6197 | 290 // sorted after arena record |
291 if (is_on() && !UseMallocOnly) { | |
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292 assert(addr != NULL, "Sanity check"); |
6197 | 293 create_memory_record((addr + sizeof(void*)), MemPointerRecord::arena_size_tag(), size, |
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294 DEBUG_CALLER_PC, NULL); |
6197 | 295 } |
296 } | |
297 | |
298 // record a virtual memory 'reserve' call | |
299 static inline void record_virtual_memory_reserve(address addr, size_t size, | |
300 address pc = 0, Thread* thread = NULL) { | |
301 if (is_on()) { | |
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302 assert(size > 0, "Sanity check"); |
6197 | 303 create_memory_record(addr, MemPointerRecord::virtual_memory_reserve_tag(), |
304 size, pc, thread); | |
305 } | |
306 } | |
307 | |
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308 static inline void record_thread_stack(address addr, size_t size, Thread* thr, |
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309 address pc = 0) { |
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310 if (is_on()) { |
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311 assert(size > 0 && thr != NULL, "Sanity check"); |
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312 create_memory_record(addr, MemPointerRecord::virtual_memory_reserve_tag() | mtThreadStack, |
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313 size, pc, thr); |
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314 create_memory_record(addr, MemPointerRecord::virtual_memory_commit_tag() | mtThreadStack, |
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315 size, pc, thr); |
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316 } |
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317 } |
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318 |
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319 static inline void release_thread_stack(address addr, size_t size, Thread* thr) { |
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320 if (is_on()) { |
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321 assert(size > 0 && thr != NULL, "Sanity check"); |
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322 assert(!thr->is_Java_thread(), "too early"); |
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323 create_memory_record(addr, MemPointerRecord::virtual_memory_uncommit_tag() | mtThreadStack, |
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324 size, DEBUG_CALLER_PC, thr); |
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325 create_memory_record(addr, MemPointerRecord::virtual_memory_release_tag() | mtThreadStack, |
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326 size, DEBUG_CALLER_PC, thr); |
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327 } |
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328 } |
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329 |
6197 | 330 // record a virtual memory 'commit' call |
331 static inline void record_virtual_memory_commit(address addr, size_t size, | |
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332 address pc, Thread* thread = NULL) { |
6197 | 333 if (is_on()) { |
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334 assert(size > 0, "Sanity check"); |
6197 | 335 create_memory_record(addr, MemPointerRecord::virtual_memory_commit_tag(), |
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336 size, pc, thread); |
6197 | 337 } |
338 } | |
339 | |
340 // record a virtual memory 'uncommit' call | |
341 static inline void record_virtual_memory_uncommit(address addr, size_t size, | |
342 Thread* thread = NULL) { | |
343 if (is_on()) { | |
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344 assert(size > 0, "Sanity check"); |
6197 | 345 create_memory_record(addr, MemPointerRecord::virtual_memory_uncommit_tag(), |
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346 size, DEBUG_CALLER_PC, thread); |
6197 | 347 } |
348 } | |
349 | |
350 // record a virtual memory 'release' call | |
351 static inline void record_virtual_memory_release(address addr, size_t size, | |
352 Thread* thread = NULL) { | |
353 if (is_on()) { | |
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354 assert(size > 0, "Sanity check"); |
6197 | 355 create_memory_record(addr, MemPointerRecord::virtual_memory_release_tag(), |
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356 size, DEBUG_CALLER_PC, thread); |
6197 | 357 } |
358 } | |
359 | |
360 // record memory type on virtual memory base address | |
361 static inline void record_virtual_memory_type(address base, MEMFLAGS flags, | |
362 Thread* thread = NULL) { | |
363 if (is_on()) { | |
364 assert(base > 0, "wrong base address"); | |
365 assert((flags & (~mt_masks)) == 0, "memory type only"); | |
366 create_memory_record(base, (flags | MemPointerRecord::virtual_memory_type_tag()), | |
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367 0, DEBUG_CALLER_PC, thread); |
6197 | 368 } |
369 } | |
370 | |
371 | |
372 // create memory baseline of current memory snapshot | |
373 static bool baseline(); | |
374 // is there a memory baseline | |
375 static bool has_baseline() { | |
376 return _baseline.baselined(); | |
377 } | |
378 | |
379 // print memory usage from current snapshot | |
380 static bool print_memory_usage(BaselineOutputer& out, size_t unit, | |
381 bool summary_only = true); | |
382 // compare memory usage between current snapshot and baseline | |
383 static bool compare_memory_usage(BaselineOutputer& out, size_t unit, | |
384 bool summary_only = true); | |
385 | |
386 // sync is called within global safepoint to synchronize nmt data | |
387 static void sync(); | |
388 | |
389 // called when a thread is about to exit | |
390 static void thread_exiting(JavaThread* thread); | |
391 | |
392 // retrieve global snapshot | |
393 static MemSnapshot* get_snapshot() { | |
394 if (shutdown_in_progress()) { | |
395 return NULL; | |
396 } | |
397 return _snapshot; | |
398 } | |
399 | |
400 // print tracker stats | |
401 NOT_PRODUCT(static void print_tracker_stats(outputStream* st);) | |
402 NOT_PRODUCT(static void walk_stack(int toSkip, char* buf, int len);) | |
403 | |
404 private: | |
405 // start native memory tracking worker thread | |
406 static bool start_worker(); | |
407 | |
408 // called by worker thread to complete shutdown process | |
409 static void final_shutdown(); | |
410 | |
411 protected: | |
412 // retrieve per-thread recorder of the specified thread. | |
413 // if the recorder is full, it will be enqueued to overflow | |
414 // queue, a new recorder is acquired from recorder pool or a | |
415 // new instance is created. | |
416 // when thread == NULL, it means global recorder | |
417 static MemRecorder* get_thread_recorder(JavaThread* thread); | |
418 | |
419 // per-thread recorder pool | |
420 static void release_thread_recorder(MemRecorder* rec); | |
421 static void delete_all_pooled_recorders(); | |
422 | |
423 // pending recorder queue. Recorders are queued to pending queue | |
424 // when they are overflowed or collected at nmt sync point. | |
425 static void enqueue_pending_recorder(MemRecorder* rec); | |
426 static MemRecorder* get_pending_recorders(); | |
427 static void delete_all_pending_recorders(); | |
428 | |
429 private: | |
430 // retrieve a pooled memory record or create new one if there is not | |
431 // one available | |
432 static MemRecorder* get_new_or_pooled_instance(); | |
433 static void create_memory_record(address addr, MEMFLAGS type, | |
434 size_t size, address pc, Thread* thread); | |
435 static void create_record_in_recorder(address addr, MEMFLAGS type, | |
6231 | 436 size_t size, address pc, JavaThread* thread); |
6197 | 437 |
438 private: | |
439 // global memory snapshot | |
440 static MemSnapshot* _snapshot; | |
441 | |
442 // a memory baseline of snapshot | |
443 static MemBaseline _baseline; | |
444 | |
445 // query lock | |
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446 static Mutex* _query_lock; |
6197 | 447 |
448 // a thread can start to allocate memory before it is attached | |
449 // to VM 'Thread', those memory activities are recorded here. | |
450 // ThreadCritical is required to guard this global recorder. | |
451 static MemRecorder* _global_recorder; | |
452 | |
453 // main thread id | |
454 debug_only(static intx _main_thread_tid;) | |
455 | |
456 // pending recorders to be merged | |
457 static volatile MemRecorder* _merge_pending_queue; | |
458 | |
459 NOT_PRODUCT(static volatile jint _pending_recorder_count;) | |
460 | |
461 // pooled memory recorders | |
462 static volatile MemRecorder* _pooled_recorders; | |
463 | |
464 // memory recorder pool management, uses following | |
465 // counter to determine if a released memory recorder | |
466 // should be pooled | |
467 | |
468 // latest thread count | |
469 static int _thread_count; | |
470 // pooled recorder count | |
471 static volatile jint _pooled_recorder_count; | |
472 | |
473 | |
474 // worker thread to merge pending recorders into snapshot | |
475 static MemTrackWorker* _worker_thread; | |
476 | |
477 // how many safepoints we skipped without entering sync point | |
478 static int _sync_point_skip_count; | |
479 | |
480 // if the tracker is properly intialized | |
481 static bool _is_tracker_ready; | |
482 // tracking level (off, summary and detail) | |
483 static enum NMTLevel _tracking_level; | |
484 | |
485 // current nmt state | |
486 static volatile enum NMTStates _state; | |
487 // the reason for shutting down nmt | |
488 static enum ShutdownReason _reason; | |
489 }; | |
490 | |
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491 #endif // !INCLUDE_NMT |
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492 |
6197 | 493 #endif // SHARE_VM_SERVICES_MEM_TRACKER_HPP |