Tue, 27 Nov 2012 14:20:21 +0100
8003935: Simplify the needed includes for using Thread::current()
Reviewed-by: dholmes, rbackman, coleenp
zgu@3900 | 1 | /* |
zgu@3900 | 2 | * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. |
zgu@3900 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
zgu@3900 | 4 | * |
zgu@3900 | 5 | * This code is free software; you can redistribute it and/or modify it |
zgu@3900 | 6 | * under the terms of the GNU General Public License version 2 only, as |
zgu@3900 | 7 | * published by the Free Software Foundation. |
zgu@3900 | 8 | * |
zgu@3900 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
zgu@3900 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
zgu@3900 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
zgu@3900 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
zgu@3900 | 13 | * accompanied this code). |
zgu@3900 | 14 | * |
zgu@3900 | 15 | * You should have received a copy of the GNU General Public License version |
zgu@3900 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
zgu@3900 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
zgu@3900 | 18 | * |
zgu@3900 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
zgu@3900 | 20 | * or visit www.oracle.com if you need additional information or have any |
zgu@3900 | 21 | * questions. |
zgu@3900 | 22 | * |
zgu@3900 | 23 | */ |
zgu@3900 | 24 | |
zgu@3900 | 25 | #ifndef SHARE_VM_SERVICES_MEM_TRACKER_HPP |
zgu@3900 | 26 | #define SHARE_VM_SERVICES_MEM_TRACKER_HPP |
zgu@3900 | 27 | |
jprovino@4165 | 28 | #include "utilities/macros.hpp" |
jprovino@4165 | 29 | |
jprovino@4165 | 30 | #if !INCLUDE_NMT |
jprovino@4165 | 31 | |
jprovino@4165 | 32 | #include "utilities/ostream.hpp" |
jprovino@4165 | 33 | |
jprovino@4165 | 34 | class BaselineOutputer : public StackObj { |
jprovino@4165 | 35 | |
jprovino@4165 | 36 | }; |
jprovino@4165 | 37 | |
jprovino@4165 | 38 | class BaselineTTYOutputer : public BaselineOutputer { |
jprovino@4165 | 39 | public: |
jprovino@4165 | 40 | BaselineTTYOutputer(outputStream* st) { } |
jprovino@4165 | 41 | }; |
jprovino@4165 | 42 | |
jprovino@4165 | 43 | class MemTracker : AllStatic { |
jprovino@4165 | 44 | public: |
jprovino@4165 | 45 | enum ShutdownReason { |
jprovino@4165 | 46 | NMT_shutdown_none, // no shutdown requested |
jprovino@4165 | 47 | NMT_shutdown_user, // user requested shutdown |
jprovino@4165 | 48 | NMT_normal, // normal shutdown, process exit |
jprovino@4165 | 49 | NMT_out_of_memory, // shutdown due to out of memory |
jprovino@4165 | 50 | NMT_initialization, // shutdown due to initialization failure |
jprovino@4165 | 51 | NMT_use_malloc_only, // can not combine NMT with UseMallocOnly flag |
jprovino@4165 | 52 | NMT_error_reporting, // shutdown by vmError::report_and_die() |
jprovino@4165 | 53 | NMT_out_of_generation, // running out of generation queue |
jprovino@4165 | 54 | NMT_sequence_overflow // overflow the sequence number |
jprovino@4165 | 55 | }; |
jprovino@4165 | 56 | |
jprovino@4165 | 57 | |
jprovino@4165 | 58 | public: |
jprovino@4165 | 59 | static inline void init_tracking_options(const char* option_line) { } |
jprovino@4165 | 60 | static inline bool is_on() { return false; } |
jprovino@4165 | 61 | static const char* reason() { return "Native memory tracking is not implemented"; } |
jprovino@4165 | 62 | static inline bool can_walk_stack() { return false; } |
jprovino@4165 | 63 | |
jprovino@4165 | 64 | static inline void bootstrap_single_thread() { } |
jprovino@4165 | 65 | static inline void bootstrap_multi_thread() { } |
jprovino@4165 | 66 | static inline void start() { } |
jprovino@4165 | 67 | |
jprovino@4165 | 68 | static inline void record_malloc(address addr, size_t size, MEMFLAGS flags, |
jprovino@4165 | 69 | address pc = 0, Thread* thread = NULL) { } |
jprovino@4165 | 70 | static inline void record_free(address addr, MEMFLAGS flags, Thread* thread = NULL) { } |
jprovino@4165 | 71 | static inline void record_realloc(address old_addr, address new_addr, size_t size, |
jprovino@4165 | 72 | MEMFLAGS flags, address pc = 0, Thread* thread = NULL) { } |
jprovino@4165 | 73 | static inline void record_arena_size(address addr, size_t size) { } |
jprovino@4165 | 74 | static inline void record_virtual_memory_reserve(address addr, size_t size, |
jprovino@4165 | 75 | address pc = 0, Thread* thread = NULL) { } |
jprovino@4165 | 76 | static inline void record_virtual_memory_commit(address addr, size_t size, |
jprovino@4165 | 77 | address pc = 0, Thread* thread = NULL) { } |
jprovino@4165 | 78 | static inline void record_virtual_memory_uncommit(address addr, size_t size, |
jprovino@4165 | 79 | Thread* thread = NULL) { } |
jprovino@4165 | 80 | static inline void record_virtual_memory_release(address addr, size_t size, |
jprovino@4165 | 81 | Thread* thread = NULL) { } |
jprovino@4165 | 82 | static inline void record_virtual_memory_type(address base, MEMFLAGS flags, |
jprovino@4165 | 83 | Thread* thread = NULL) { } |
jprovino@4165 | 84 | static inline bool baseline() { return false; } |
jprovino@4165 | 85 | static inline bool has_baseline() { return false; } |
jprovino@4165 | 86 | |
jprovino@4165 | 87 | static void shutdown(ShutdownReason reason) { } |
jprovino@4165 | 88 | static inline bool shutdown_in_progress() { } |
jprovino@4165 | 89 | static bool print_memory_usage(BaselineOutputer& out, size_t unit, |
jprovino@4165 | 90 | bool summary_only = true) { } |
jprovino@4165 | 91 | static bool compare_memory_usage(BaselineOutputer& out, size_t unit, |
jprovino@4165 | 92 | bool summary_only = true) { } |
jprovino@4165 | 93 | |
jprovino@4165 | 94 | static inline void sync() { } |
jprovino@4165 | 95 | static inline void thread_exiting(JavaThread* thread) { } |
jprovino@4165 | 96 | |
jprovino@4165 | 97 | }; |
jprovino@4165 | 98 | |
jprovino@4165 | 99 | |
jprovino@4165 | 100 | #else // !INCLUDE_NMT |
jprovino@4165 | 101 | |
zgu@3900 | 102 | #include "memory/allocation.hpp" |
zgu@3900 | 103 | #include "runtime/globals.hpp" |
zgu@3900 | 104 | #include "runtime/mutex.hpp" |
zgu@3900 | 105 | #include "runtime/os.hpp" |
zgu@3900 | 106 | #include "runtime/thread.hpp" |
zgu@3900 | 107 | #include "services/memPtr.hpp" |
zgu@3900 | 108 | #include "services/memRecorder.hpp" |
zgu@3900 | 109 | #include "services/memSnapshot.hpp" |
zgu@3900 | 110 | #include "services/memTrackWorker.hpp" |
zgu@3900 | 111 | |
zgu@4193 | 112 | extern bool NMT_track_callsite; |
zgu@4193 | 113 | |
zgu@4193 | 114 | #ifdef ASSERT |
zgu@4193 | 115 | #define DEBUG_CALLER_PC (NMT_track_callsite ? os::get_caller_pc(2) : 0) |
zgu@3900 | 116 | #else |
zgu@3900 | 117 | #define DEBUG_CALLER_PC 0 |
zgu@3900 | 118 | #endif |
zgu@3900 | 119 | |
zgu@3900 | 120 | // The thread closure walks threads to collect per-thread |
zgu@3900 | 121 | // memory recorders at NMT sync point |
zgu@3900 | 122 | class SyncThreadRecorderClosure : public ThreadClosure { |
zgu@3900 | 123 | private: |
zgu@3900 | 124 | int _thread_count; |
zgu@3900 | 125 | |
zgu@3900 | 126 | public: |
zgu@3900 | 127 | SyncThreadRecorderClosure() { |
zgu@3900 | 128 | _thread_count =0; |
zgu@3900 | 129 | } |
zgu@3900 | 130 | |
zgu@3900 | 131 | void do_thread(Thread* thread); |
zgu@3900 | 132 | int get_thread_count() const { |
zgu@3900 | 133 | return _thread_count; |
zgu@3900 | 134 | } |
zgu@3900 | 135 | }; |
zgu@3900 | 136 | |
zgu@3900 | 137 | class BaselineOutputer; |
zgu@3900 | 138 | class MemSnapshot; |
zgu@3900 | 139 | class MemTrackWorker; |
zgu@3900 | 140 | class Thread; |
zgu@3900 | 141 | /* |
zgu@3900 | 142 | * MemTracker is the 'gate' class to native memory tracking runtime. |
zgu@3900 | 143 | */ |
zgu@3900 | 144 | class MemTracker : AllStatic { |
zgu@3900 | 145 | friend class MemTrackWorker; |
zgu@3900 | 146 | friend class MemSnapshot; |
zgu@3900 | 147 | friend class SyncThreadRecorderClosure; |
zgu@3900 | 148 | |
zgu@3900 | 149 | // NMT state |
zgu@3900 | 150 | enum NMTStates { |
zgu@3900 | 151 | NMT_uninited, // not yet initialized |
zgu@3900 | 152 | NMT_bootstrapping_single_thread, // bootstrapping, VM is in single thread mode |
zgu@3900 | 153 | NMT_bootstrapping_multi_thread, // bootstrapping, VM is about to enter multi-thread mode |
zgu@3900 | 154 | NMT_started, // NMT fully started |
zgu@3900 | 155 | NMT_shutdown_pending, // shutdown pending |
zgu@3900 | 156 | NMT_final_shutdown, // in final phase of shutdown |
zgu@3900 | 157 | NMT_shutdown // shutdown |
zgu@3900 | 158 | }; |
zgu@3900 | 159 | |
zgu@4081 | 160 | public: |
zgu@3900 | 161 | // native memory tracking level |
zgu@3900 | 162 | enum NMTLevel { |
zgu@3900 | 163 | NMT_off, // native memory tracking is off |
zgu@3900 | 164 | NMT_summary, // don't track callsite |
zgu@3900 | 165 | NMT_detail // track callsite also |
zgu@3900 | 166 | }; |
zgu@3900 | 167 | |
zgu@3900 | 168 | enum ShutdownReason { |
zgu@3900 | 169 | NMT_shutdown_none, // no shutdown requested |
zgu@3900 | 170 | NMT_shutdown_user, // user requested shutdown |
zgu@3900 | 171 | NMT_normal, // normal shutdown, process exit |
zgu@3900 | 172 | NMT_out_of_memory, // shutdown due to out of memory |
zgu@3900 | 173 | NMT_initialization, // shutdown due to initialization failure |
zgu@3900 | 174 | NMT_use_malloc_only, // can not combine NMT with UseMallocOnly flag |
zgu@3900 | 175 | NMT_error_reporting, // shutdown by vmError::report_and_die() |
zgu@3900 | 176 | NMT_out_of_generation, // running out of generation queue |
zgu@3900 | 177 | NMT_sequence_overflow // overflow the sequence number |
zgu@3900 | 178 | }; |
zgu@3900 | 179 | |
zgu@3900 | 180 | public: |
zgu@3900 | 181 | // initialize NMT tracking level from command line options, called |
zgu@3900 | 182 | // from VM command line parsing code |
zgu@3900 | 183 | static void init_tracking_options(const char* option_line); |
zgu@3900 | 184 | |
zgu@3900 | 185 | // if NMT is enabled to record memory activities |
zgu@3900 | 186 | static inline bool is_on() { |
zgu@3900 | 187 | return (_tracking_level >= NMT_summary && |
zgu@3900 | 188 | _state >= NMT_bootstrapping_single_thread); |
zgu@3900 | 189 | } |
zgu@3900 | 190 | |
zgu@4081 | 191 | static inline enum NMTLevel tracking_level() { |
zgu@4081 | 192 | return _tracking_level; |
zgu@4081 | 193 | } |
zgu@4081 | 194 | |
zgu@3900 | 195 | // user readable reason for shutting down NMT |
zgu@3900 | 196 | static const char* reason() { |
zgu@3900 | 197 | switch(_reason) { |
zgu@3900 | 198 | case NMT_shutdown_none: |
zgu@3900 | 199 | return "Native memory tracking is not enabled"; |
zgu@3900 | 200 | case NMT_shutdown_user: |
zgu@3900 | 201 | return "Native memory tracking has been shutdown by user"; |
zgu@3900 | 202 | case NMT_normal: |
zgu@3900 | 203 | return "Native memory tracking has been shutdown due to process exiting"; |
zgu@3936 | 204 | case NMT_out_of_memory: |
zgu@3936 | 205 | return "Native memory tracking has been shutdown due to out of native memory"; |
zgu@3900 | 206 | case NMT_initialization: |
zgu@3900 | 207 | return "Native memory tracking failed to initialize"; |
zgu@3900 | 208 | case NMT_error_reporting: |
zgu@3900 | 209 | return "Native memory tracking has been shutdown due to error reporting"; |
zgu@3900 | 210 | case NMT_out_of_generation: |
zgu@3900 | 211 | return "Native memory tracking has been shutdown due to running out of generation buffer"; |
zgu@3900 | 212 | case NMT_sequence_overflow: |
zgu@3900 | 213 | return "Native memory tracking has been shutdown due to overflow the sequence number"; |
zgu@3900 | 214 | case NMT_use_malloc_only: |
zgu@3900 | 215 | return "Native memory tracking is not supported when UseMallocOnly is on"; |
zgu@3900 | 216 | default: |
zgu@3900 | 217 | ShouldNotReachHere(); |
zgu@3900 | 218 | return NULL; |
zgu@3900 | 219 | } |
zgu@3900 | 220 | } |
zgu@3900 | 221 | |
zgu@3900 | 222 | // test if we can walk native stack |
zgu@3900 | 223 | static bool can_walk_stack() { |
zgu@3900 | 224 | // native stack is not walkable during bootstrapping on sparc |
zgu@3900 | 225 | #if defined(SPARC) |
zgu@3900 | 226 | return (_state == NMT_started); |
zgu@3900 | 227 | #else |
zgu@3900 | 228 | return (_state >= NMT_bootstrapping_single_thread && _state <= NMT_started); |
zgu@3900 | 229 | #endif |
zgu@3900 | 230 | } |
zgu@3900 | 231 | |
zgu@3900 | 232 | // if native memory tracking tracks callsite |
zgu@3900 | 233 | static inline bool track_callsite() { return _tracking_level == NMT_detail; } |
zgu@3900 | 234 | |
zgu@3900 | 235 | // shutdown native memory tracking capability. Native memory tracking |
zgu@3900 | 236 | // can be shutdown by VM when it encounters low memory scenarios. |
zgu@3900 | 237 | // Memory tracker should gracefully shutdown itself, and preserve the |
zgu@3900 | 238 | // latest memory statistics for post morten diagnosis. |
zgu@3900 | 239 | static void shutdown(ShutdownReason reason); |
zgu@3900 | 240 | |
zgu@3900 | 241 | // if there is shutdown requested |
zgu@3900 | 242 | static inline bool shutdown_in_progress() { |
zgu@3900 | 243 | return (_state >= NMT_shutdown_pending); |
zgu@3900 | 244 | } |
zgu@3900 | 245 | |
zgu@3900 | 246 | // bootstrap native memory tracking, so it can start to collect raw data |
zgu@3900 | 247 | // before worker thread can start |
zgu@3900 | 248 | |
zgu@3900 | 249 | // the first phase of bootstrapping, when VM still in single-threaded mode |
zgu@3900 | 250 | static void bootstrap_single_thread(); |
zgu@3900 | 251 | // the second phase of bootstrapping, VM is about or already in multi-threaded mode |
zgu@3900 | 252 | static void bootstrap_multi_thread(); |
zgu@3900 | 253 | |
zgu@3900 | 254 | |
zgu@3900 | 255 | // start() has to be called when VM still in single thread mode, but after |
zgu@3900 | 256 | // command line option parsing is done. |
zgu@3900 | 257 | static void start(); |
zgu@3900 | 258 | |
zgu@3900 | 259 | // record a 'malloc' call |
zgu@3900 | 260 | static inline void record_malloc(address addr, size_t size, MEMFLAGS flags, |
zgu@3900 | 261 | address pc = 0, Thread* thread = NULL) { |
zgu@4193 | 262 | if (is_on() && NMT_CAN_TRACK(flags)) { |
zgu@4079 | 263 | assert(size > 0, "Sanity check"); |
zgu@3900 | 264 | create_memory_record(addr, (flags|MemPointerRecord::malloc_tag()), size, pc, thread); |
zgu@3900 | 265 | } |
zgu@3900 | 266 | } |
zgu@3900 | 267 | // record a 'free' call |
zgu@3900 | 268 | static inline void record_free(address addr, MEMFLAGS flags, Thread* thread = NULL) { |
zgu@3900 | 269 | if (is_on() && NMT_CAN_TRACK(flags)) { |
zgu@3900 | 270 | create_memory_record(addr, MemPointerRecord::free_tag(), 0, 0, thread); |
zgu@3900 | 271 | } |
zgu@3900 | 272 | } |
zgu@3900 | 273 | // record a 'realloc' call |
zgu@3900 | 274 | static inline void record_realloc(address old_addr, address new_addr, size_t size, |
zgu@3900 | 275 | MEMFLAGS flags, address pc = 0, Thread* thread = NULL) { |
zgu@4193 | 276 | if (is_on() && NMT_CAN_TRACK(flags)) { |
zgu@4079 | 277 | assert(size > 0, "Sanity check"); |
zgu@3900 | 278 | record_free(old_addr, flags, thread); |
zgu@3900 | 279 | record_malloc(new_addr, size, flags, pc, thread); |
zgu@3900 | 280 | } |
zgu@3900 | 281 | } |
zgu@3900 | 282 | |
zgu@4274 | 283 | // record arena memory size |
zgu@3900 | 284 | static inline void record_arena_size(address addr, size_t size) { |
zgu@4274 | 285 | // we add a positive offset to arena address, so we can have arena memory record |
zgu@3900 | 286 | // sorted after arena record |
zgu@3900 | 287 | if (is_on() && !UseMallocOnly) { |
zgu@4079 | 288 | assert(addr != NULL, "Sanity check"); |
zgu@3900 | 289 | create_memory_record((addr + sizeof(void*)), MemPointerRecord::arena_size_tag(), size, |
zgu@4274 | 290 | DEBUG_CALLER_PC, NULL); |
zgu@3900 | 291 | } |
zgu@3900 | 292 | } |
zgu@3900 | 293 | |
zgu@3900 | 294 | // record a virtual memory 'reserve' call |
zgu@3900 | 295 | static inline void record_virtual_memory_reserve(address addr, size_t size, |
zgu@3900 | 296 | address pc = 0, Thread* thread = NULL) { |
zgu@3900 | 297 | if (is_on()) { |
zgu@4079 | 298 | assert(size > 0, "Sanity check"); |
zgu@3900 | 299 | create_memory_record(addr, MemPointerRecord::virtual_memory_reserve_tag(), |
zgu@3900 | 300 | size, pc, thread); |
zgu@3900 | 301 | } |
zgu@3900 | 302 | } |
zgu@3900 | 303 | |
zgu@4053 | 304 | static inline void record_thread_stack(address addr, size_t size, Thread* thr, |
zgu@4053 | 305 | address pc = 0) { |
zgu@4053 | 306 | if (is_on()) { |
zgu@4053 | 307 | assert(size > 0 && thr != NULL, "Sanity check"); |
zgu@4053 | 308 | create_memory_record(addr, MemPointerRecord::virtual_memory_reserve_tag() | mtThreadStack, |
zgu@4053 | 309 | size, pc, thr); |
zgu@4053 | 310 | create_memory_record(addr, MemPointerRecord::virtual_memory_commit_tag() | mtThreadStack, |
zgu@4053 | 311 | size, pc, thr); |
zgu@4053 | 312 | } |
zgu@4053 | 313 | } |
zgu@4053 | 314 | |
zgu@4053 | 315 | static inline void release_thread_stack(address addr, size_t size, Thread* thr) { |
zgu@4053 | 316 | if (is_on()) { |
zgu@4053 | 317 | assert(size > 0 && thr != NULL, "Sanity check"); |
zgu@4193 | 318 | assert(!thr->is_Java_thread(), "too early"); |
zgu@4053 | 319 | create_memory_record(addr, MemPointerRecord::virtual_memory_uncommit_tag() | mtThreadStack, |
zgu@4053 | 320 | size, DEBUG_CALLER_PC, thr); |
zgu@4053 | 321 | create_memory_record(addr, MemPointerRecord::virtual_memory_release_tag() | mtThreadStack, |
zgu@4053 | 322 | size, DEBUG_CALLER_PC, thr); |
zgu@4053 | 323 | } |
zgu@4053 | 324 | } |
zgu@4053 | 325 | |
zgu@3900 | 326 | // record a virtual memory 'commit' call |
zgu@3900 | 327 | static inline void record_virtual_memory_commit(address addr, size_t size, |
zgu@4193 | 328 | address pc, Thread* thread = NULL) { |
zgu@3900 | 329 | if (is_on()) { |
zgu@4079 | 330 | assert(size > 0, "Sanity check"); |
zgu@3900 | 331 | create_memory_record(addr, MemPointerRecord::virtual_memory_commit_tag(), |
zgu@4193 | 332 | size, pc, thread); |
zgu@3900 | 333 | } |
zgu@3900 | 334 | } |
zgu@3900 | 335 | |
zgu@3900 | 336 | // record a virtual memory 'uncommit' call |
zgu@3900 | 337 | static inline void record_virtual_memory_uncommit(address addr, size_t size, |
zgu@3900 | 338 | Thread* thread = NULL) { |
zgu@3900 | 339 | if (is_on()) { |
zgu@4079 | 340 | assert(size > 0, "Sanity check"); |
zgu@3900 | 341 | create_memory_record(addr, MemPointerRecord::virtual_memory_uncommit_tag(), |
zgu@4053 | 342 | size, DEBUG_CALLER_PC, thread); |
zgu@3900 | 343 | } |
zgu@3900 | 344 | } |
zgu@3900 | 345 | |
zgu@3900 | 346 | // record a virtual memory 'release' call |
zgu@3900 | 347 | static inline void record_virtual_memory_release(address addr, size_t size, |
zgu@3900 | 348 | Thread* thread = NULL) { |
zgu@3900 | 349 | if (is_on()) { |
zgu@4079 | 350 | assert(size > 0, "Sanity check"); |
zgu@3900 | 351 | create_memory_record(addr, MemPointerRecord::virtual_memory_release_tag(), |
zgu@4053 | 352 | size, DEBUG_CALLER_PC, thread); |
zgu@3900 | 353 | } |
zgu@3900 | 354 | } |
zgu@3900 | 355 | |
zgu@3900 | 356 | // record memory type on virtual memory base address |
zgu@3900 | 357 | static inline void record_virtual_memory_type(address base, MEMFLAGS flags, |
zgu@3900 | 358 | Thread* thread = NULL) { |
zgu@3900 | 359 | if (is_on()) { |
zgu@3900 | 360 | assert(base > 0, "wrong base address"); |
zgu@3900 | 361 | assert((flags & (~mt_masks)) == 0, "memory type only"); |
zgu@3900 | 362 | create_memory_record(base, (flags | MemPointerRecord::virtual_memory_type_tag()), |
zgu@4053 | 363 | 0, DEBUG_CALLER_PC, thread); |
zgu@3900 | 364 | } |
zgu@3900 | 365 | } |
zgu@3900 | 366 | |
zgu@3900 | 367 | |
zgu@3900 | 368 | // create memory baseline of current memory snapshot |
zgu@3900 | 369 | static bool baseline(); |
zgu@3900 | 370 | // is there a memory baseline |
zgu@3900 | 371 | static bool has_baseline() { |
zgu@3900 | 372 | return _baseline.baselined(); |
zgu@3900 | 373 | } |
zgu@3900 | 374 | |
zgu@3900 | 375 | // print memory usage from current snapshot |
zgu@3900 | 376 | static bool print_memory_usage(BaselineOutputer& out, size_t unit, |
zgu@3900 | 377 | bool summary_only = true); |
zgu@3900 | 378 | // compare memory usage between current snapshot and baseline |
zgu@3900 | 379 | static bool compare_memory_usage(BaselineOutputer& out, size_t unit, |
zgu@3900 | 380 | bool summary_only = true); |
zgu@3900 | 381 | |
zgu@3900 | 382 | // sync is called within global safepoint to synchronize nmt data |
zgu@3900 | 383 | static void sync(); |
zgu@3900 | 384 | |
zgu@3900 | 385 | // called when a thread is about to exit |
zgu@3900 | 386 | static void thread_exiting(JavaThread* thread); |
zgu@3900 | 387 | |
zgu@3900 | 388 | // retrieve global snapshot |
zgu@3900 | 389 | static MemSnapshot* get_snapshot() { |
zgu@3900 | 390 | if (shutdown_in_progress()) { |
zgu@3900 | 391 | return NULL; |
zgu@3900 | 392 | } |
zgu@3900 | 393 | return _snapshot; |
zgu@3900 | 394 | } |
zgu@3900 | 395 | |
zgu@3900 | 396 | // print tracker stats |
zgu@3900 | 397 | NOT_PRODUCT(static void print_tracker_stats(outputStream* st);) |
zgu@3900 | 398 | NOT_PRODUCT(static void walk_stack(int toSkip, char* buf, int len);) |
zgu@3900 | 399 | |
zgu@3900 | 400 | private: |
zgu@3900 | 401 | // start native memory tracking worker thread |
zgu@3900 | 402 | static bool start_worker(); |
zgu@3900 | 403 | |
zgu@3900 | 404 | // called by worker thread to complete shutdown process |
zgu@3900 | 405 | static void final_shutdown(); |
zgu@3900 | 406 | |
zgu@3900 | 407 | protected: |
zgu@3900 | 408 | // retrieve per-thread recorder of the specified thread. |
zgu@3900 | 409 | // if the recorder is full, it will be enqueued to overflow |
zgu@3900 | 410 | // queue, a new recorder is acquired from recorder pool or a |
zgu@3900 | 411 | // new instance is created. |
zgu@3900 | 412 | // when thread == NULL, it means global recorder |
zgu@3900 | 413 | static MemRecorder* get_thread_recorder(JavaThread* thread); |
zgu@3900 | 414 | |
zgu@3900 | 415 | // per-thread recorder pool |
zgu@3900 | 416 | static void release_thread_recorder(MemRecorder* rec); |
zgu@3900 | 417 | static void delete_all_pooled_recorders(); |
zgu@3900 | 418 | |
zgu@3900 | 419 | // pending recorder queue. Recorders are queued to pending queue |
zgu@3900 | 420 | // when they are overflowed or collected at nmt sync point. |
zgu@3900 | 421 | static void enqueue_pending_recorder(MemRecorder* rec); |
zgu@3900 | 422 | static MemRecorder* get_pending_recorders(); |
zgu@3900 | 423 | static void delete_all_pending_recorders(); |
zgu@3900 | 424 | |
zgu@3900 | 425 | private: |
zgu@3900 | 426 | // retrieve a pooled memory record or create new one if there is not |
zgu@3900 | 427 | // one available |
zgu@3900 | 428 | static MemRecorder* get_new_or_pooled_instance(); |
zgu@3900 | 429 | static void create_memory_record(address addr, MEMFLAGS type, |
zgu@3900 | 430 | size_t size, address pc, Thread* thread); |
zgu@3900 | 431 | static void create_record_in_recorder(address addr, MEMFLAGS type, |
zgu@3935 | 432 | size_t size, address pc, JavaThread* thread); |
zgu@3900 | 433 | |
zgu@3900 | 434 | private: |
zgu@3900 | 435 | // global memory snapshot |
zgu@3900 | 436 | static MemSnapshot* _snapshot; |
zgu@3900 | 437 | |
zgu@3900 | 438 | // a memory baseline of snapshot |
zgu@3900 | 439 | static MemBaseline _baseline; |
zgu@3900 | 440 | |
zgu@3900 | 441 | // query lock |
zgu@3936 | 442 | static Mutex* _query_lock; |
zgu@3900 | 443 | |
zgu@3900 | 444 | // a thread can start to allocate memory before it is attached |
zgu@3900 | 445 | // to VM 'Thread', those memory activities are recorded here. |
zgu@3900 | 446 | // ThreadCritical is required to guard this global recorder. |
zgu@3900 | 447 | static MemRecorder* _global_recorder; |
zgu@3900 | 448 | |
zgu@3900 | 449 | // main thread id |
zgu@3900 | 450 | debug_only(static intx _main_thread_tid;) |
zgu@3900 | 451 | |
zgu@3900 | 452 | // pending recorders to be merged |
zgu@3900 | 453 | static volatile MemRecorder* _merge_pending_queue; |
zgu@3900 | 454 | |
zgu@3900 | 455 | NOT_PRODUCT(static volatile jint _pending_recorder_count;) |
zgu@3900 | 456 | |
zgu@3900 | 457 | // pooled memory recorders |
zgu@3900 | 458 | static volatile MemRecorder* _pooled_recorders; |
zgu@3900 | 459 | |
zgu@3900 | 460 | // memory recorder pool management, uses following |
zgu@3900 | 461 | // counter to determine if a released memory recorder |
zgu@3900 | 462 | // should be pooled |
zgu@3900 | 463 | |
zgu@3900 | 464 | // latest thread count |
zgu@3900 | 465 | static int _thread_count; |
zgu@3900 | 466 | // pooled recorder count |
zgu@3900 | 467 | static volatile jint _pooled_recorder_count; |
zgu@3900 | 468 | |
zgu@3900 | 469 | |
zgu@3900 | 470 | // worker thread to merge pending recorders into snapshot |
zgu@3900 | 471 | static MemTrackWorker* _worker_thread; |
zgu@3900 | 472 | |
zgu@3900 | 473 | // how many safepoints we skipped without entering sync point |
zgu@3900 | 474 | static int _sync_point_skip_count; |
zgu@3900 | 475 | |
zgu@3900 | 476 | // if the tracker is properly intialized |
zgu@3900 | 477 | static bool _is_tracker_ready; |
zgu@3900 | 478 | // tracking level (off, summary and detail) |
zgu@3900 | 479 | static enum NMTLevel _tracking_level; |
zgu@3900 | 480 | |
zgu@3900 | 481 | // current nmt state |
zgu@3900 | 482 | static volatile enum NMTStates _state; |
zgu@3900 | 483 | // the reason for shutting down nmt |
zgu@3900 | 484 | static enum ShutdownReason _reason; |
zgu@3900 | 485 | }; |
zgu@3900 | 486 | |
jprovino@4165 | 487 | #endif // !INCLUDE_NMT |
jprovino@4165 | 488 | |
zgu@3900 | 489 | #endif // SHARE_VM_SERVICES_MEM_TRACKER_HPP |