Wed, 09 Apr 2008 15:10:22 -0700
Merge
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | # include "incls/_precompiled.incl" |
duke@435 | 26 | # include "incls/_jvmtiCodeBlobEvents.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | // Support class to collect a list of the non-nmethod CodeBlobs in |
duke@435 | 29 | // the CodeCache. |
duke@435 | 30 | // |
duke@435 | 31 | // This class actually creates a list of JvmtiCodeBlobDesc - each JvmtiCodeBlobDesc |
duke@435 | 32 | // describes a single CodeBlob in the CodeCache. Note that collection is |
duke@435 | 33 | // done to a static list - this is because CodeCache::blobs_do is defined |
duke@435 | 34 | // as void CodeCache::blobs_do(void f(CodeBlob* nm)) and hence requires |
duke@435 | 35 | // a C or static method. |
duke@435 | 36 | // |
duke@435 | 37 | // Usage :- |
duke@435 | 38 | // |
duke@435 | 39 | // CodeBlobCollector collector; |
duke@435 | 40 | // |
duke@435 | 41 | // collector.collect(); |
duke@435 | 42 | // JvmtiCodeBlobDesc* blob = collector.first(); |
duke@435 | 43 | // while (blob != NULL) { |
duke@435 | 44 | // : |
duke@435 | 45 | // blob = collector.next(); |
duke@435 | 46 | // } |
duke@435 | 47 | // |
duke@435 | 48 | |
duke@435 | 49 | class CodeBlobCollector : StackObj { |
duke@435 | 50 | private: |
duke@435 | 51 | GrowableArray<JvmtiCodeBlobDesc*>* _code_blobs; // collected blobs |
duke@435 | 52 | int _pos; // iterator position |
duke@435 | 53 | |
duke@435 | 54 | // used during a collection |
duke@435 | 55 | static GrowableArray<JvmtiCodeBlobDesc*>* _global_code_blobs; |
duke@435 | 56 | static void do_blob(CodeBlob* cb); |
duke@435 | 57 | public: |
duke@435 | 58 | CodeBlobCollector() { |
duke@435 | 59 | _code_blobs = NULL; |
duke@435 | 60 | _pos = -1; |
duke@435 | 61 | } |
duke@435 | 62 | ~CodeBlobCollector() { |
duke@435 | 63 | if (_code_blobs != NULL) { |
duke@435 | 64 | for (int i=0; i<_code_blobs->length(); i++) { |
duke@435 | 65 | FreeHeap(_code_blobs->at(i)); |
duke@435 | 66 | } |
duke@435 | 67 | delete _code_blobs; |
duke@435 | 68 | } |
duke@435 | 69 | } |
duke@435 | 70 | |
duke@435 | 71 | // collect list of code blobs in the cache |
duke@435 | 72 | void collect(); |
duke@435 | 73 | |
duke@435 | 74 | // iteration support - return first code blob |
duke@435 | 75 | JvmtiCodeBlobDesc* first() { |
duke@435 | 76 | assert(_code_blobs != NULL, "not collected"); |
duke@435 | 77 | if (_code_blobs->length() == 0) { |
duke@435 | 78 | return NULL; |
duke@435 | 79 | } |
duke@435 | 80 | _pos = 0; |
duke@435 | 81 | return _code_blobs->at(0); |
duke@435 | 82 | } |
duke@435 | 83 | |
duke@435 | 84 | // iteration support - return next code blob |
duke@435 | 85 | JvmtiCodeBlobDesc* next() { |
duke@435 | 86 | assert(_pos >= 0, "iteration not started"); |
duke@435 | 87 | if (_pos+1 >= _code_blobs->length()) { |
duke@435 | 88 | return NULL; |
duke@435 | 89 | } |
duke@435 | 90 | return _code_blobs->at(++_pos); |
duke@435 | 91 | } |
duke@435 | 92 | |
duke@435 | 93 | }; |
duke@435 | 94 | |
duke@435 | 95 | // used during collection |
duke@435 | 96 | GrowableArray<JvmtiCodeBlobDesc*>* CodeBlobCollector::_global_code_blobs; |
duke@435 | 97 | |
duke@435 | 98 | |
duke@435 | 99 | // called for each CodeBlob in the CodeCache |
duke@435 | 100 | // |
duke@435 | 101 | // This function filters out nmethods as it is only interested in |
duke@435 | 102 | // other CodeBlobs. This function also filters out CodeBlobs that have |
duke@435 | 103 | // a duplicate starting address as previous blobs. This is needed to |
duke@435 | 104 | // handle the case where multiple stubs are generated into a single |
duke@435 | 105 | // BufferBlob. |
duke@435 | 106 | |
duke@435 | 107 | void CodeBlobCollector::do_blob(CodeBlob* cb) { |
duke@435 | 108 | |
duke@435 | 109 | // ignore nmethods |
duke@435 | 110 | if (cb->is_nmethod()) { |
duke@435 | 111 | return; |
duke@435 | 112 | } |
duke@435 | 113 | |
duke@435 | 114 | // check if this starting address has been seen already - the |
duke@435 | 115 | // assumption is that stubs are inserted into the list before the |
duke@435 | 116 | // enclosing BufferBlobs. |
duke@435 | 117 | address addr = cb->instructions_begin(); |
duke@435 | 118 | for (int i=0; i<_global_code_blobs->length(); i++) { |
duke@435 | 119 | JvmtiCodeBlobDesc* scb = _global_code_blobs->at(i); |
duke@435 | 120 | if (addr == scb->code_begin()) { |
duke@435 | 121 | return; |
duke@435 | 122 | } |
duke@435 | 123 | } |
duke@435 | 124 | |
duke@435 | 125 | // we must name the CodeBlob - some CodeBlobs already have names :- |
duke@435 | 126 | // - stubs used by compiled code to call a (static) C++ runtime routine |
duke@435 | 127 | // - non-relocatable machine code such as the interpreter, stubroutines, etc. |
duke@435 | 128 | // - various singleton blobs |
duke@435 | 129 | // |
duke@435 | 130 | // others are unnamed so we create a name :- |
duke@435 | 131 | // - OSR adapter (interpreter frame that has been on-stack replaced) |
duke@435 | 132 | // - I2C and C2I adapters |
duke@435 | 133 | const char* name = NULL; |
duke@435 | 134 | if (cb->is_runtime_stub()) { |
duke@435 | 135 | name = ((RuntimeStub*)cb)->name(); |
duke@435 | 136 | } |
duke@435 | 137 | if (cb->is_buffer_blob()) { |
duke@435 | 138 | name = ((BufferBlob*)cb)->name(); |
duke@435 | 139 | } |
duke@435 | 140 | if (cb->is_deoptimization_stub() || cb->is_safepoint_stub()) { |
duke@435 | 141 | name = ((SingletonBlob*)cb)->name(); |
duke@435 | 142 | } |
duke@435 | 143 | if (cb->is_uncommon_trap_stub() || cb->is_exception_stub()) { |
duke@435 | 144 | name = ((SingletonBlob*)cb)->name(); |
duke@435 | 145 | } |
duke@435 | 146 | |
duke@435 | 147 | // record the CodeBlob details as a JvmtiCodeBlobDesc |
duke@435 | 148 | JvmtiCodeBlobDesc* scb = new JvmtiCodeBlobDesc(name, cb->instructions_begin(), |
duke@435 | 149 | cb->instructions_end()); |
duke@435 | 150 | _global_code_blobs->append(scb); |
duke@435 | 151 | } |
duke@435 | 152 | |
duke@435 | 153 | |
duke@435 | 154 | // collects a list of CodeBlobs in the CodeCache. |
duke@435 | 155 | // |
duke@435 | 156 | // The created list is growable array of JvmtiCodeBlobDesc - each one describes |
duke@435 | 157 | // a CodeBlob. Note that the list is static - this is because CodeBlob::blobs_do |
duke@435 | 158 | // requires a a C or static function so we can't use an instance function. This |
duke@435 | 159 | // isn't a problem as the iteration is serial anyway as we need the CodeCache_lock |
duke@435 | 160 | // to iterate over the code cache. |
duke@435 | 161 | // |
duke@435 | 162 | // Note that the CodeBlobs in the CodeCache will include BufferBlobs that may |
duke@435 | 163 | // contain multiple stubs. As a profiler is interested in the stubs rather than |
duke@435 | 164 | // the enclosing container we first iterate over the stub code descriptors so |
duke@435 | 165 | // that the stubs go into the list first. do_blob will then filter out the |
duke@435 | 166 | // enclosing blobs if the starting address of the enclosing blobs matches the |
duke@435 | 167 | // starting address of first stub generated in the enclosing blob. |
duke@435 | 168 | |
duke@435 | 169 | void CodeBlobCollector::collect() { |
duke@435 | 170 | assert_locked_or_safepoint(CodeCache_lock); |
duke@435 | 171 | assert(_global_code_blobs == NULL, "checking"); |
duke@435 | 172 | |
duke@435 | 173 | // create the global list |
duke@435 | 174 | _global_code_blobs = new (ResourceObj::C_HEAP) GrowableArray<JvmtiCodeBlobDesc*>(50,true); |
duke@435 | 175 | |
duke@435 | 176 | // iterate over the stub code descriptors and put them in the list first. |
duke@435 | 177 | int index = 0; |
duke@435 | 178 | StubCodeDesc* desc; |
duke@435 | 179 | while ((desc = StubCodeDesc::desc_for_index(++index)) != NULL) { |
duke@435 | 180 | _global_code_blobs->append(new JvmtiCodeBlobDesc(desc->name(), desc->begin(), desc->end())); |
duke@435 | 181 | } |
duke@435 | 182 | |
duke@435 | 183 | // next iterate over all the non-nmethod code blobs and add them to |
duke@435 | 184 | // the list - as noted above this will filter out duplicates and |
duke@435 | 185 | // enclosing blobs. |
duke@435 | 186 | CodeCache::blobs_do(do_blob); |
duke@435 | 187 | |
duke@435 | 188 | // make the global list the instance list so that it can be used |
duke@435 | 189 | // for other iterations. |
duke@435 | 190 | _code_blobs = _global_code_blobs; |
duke@435 | 191 | _global_code_blobs = NULL; |
duke@435 | 192 | } |
duke@435 | 193 | |
duke@435 | 194 | |
duke@435 | 195 | // Generate a DYNAMIC_CODE_GENERATED event for each non-nmethod code blob. |
duke@435 | 196 | |
duke@435 | 197 | jvmtiError JvmtiCodeBlobEvents::generate_dynamic_code_events(JvmtiEnv* env) { |
duke@435 | 198 | CodeBlobCollector collector; |
duke@435 | 199 | |
duke@435 | 200 | // first collect all the code blobs |
duke@435 | 201 | { |
duke@435 | 202 | MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
duke@435 | 203 | collector.collect(); |
duke@435 | 204 | } |
duke@435 | 205 | |
duke@435 | 206 | // iterate over the collected list and post an event for each blob |
duke@435 | 207 | JvmtiCodeBlobDesc* blob = collector.first(); |
duke@435 | 208 | while (blob != NULL) { |
duke@435 | 209 | JvmtiExport::post_dynamic_code_generated(env, blob->name(), blob->code_begin(), blob->code_end()); |
duke@435 | 210 | blob = collector.next(); |
duke@435 | 211 | } |
duke@435 | 212 | return JVMTI_ERROR_NONE; |
duke@435 | 213 | } |
duke@435 | 214 | |
duke@435 | 215 | |
duke@435 | 216 | // Support class to describe a nmethod in the CodeCache |
duke@435 | 217 | |
duke@435 | 218 | class nmethodDesc: public CHeapObj { |
duke@435 | 219 | private: |
duke@435 | 220 | methodHandle _method; |
duke@435 | 221 | address _code_begin; |
duke@435 | 222 | address _code_end; |
duke@435 | 223 | jvmtiAddrLocationMap* _map; |
duke@435 | 224 | jint _map_length; |
duke@435 | 225 | public: |
duke@435 | 226 | nmethodDesc(methodHandle method, address code_begin, address code_end, |
duke@435 | 227 | jvmtiAddrLocationMap* map, jint map_length) { |
duke@435 | 228 | _method = method; |
duke@435 | 229 | _code_begin = code_begin; |
duke@435 | 230 | _code_end = code_end; |
duke@435 | 231 | _map = map; |
duke@435 | 232 | _map_length = map_length; |
duke@435 | 233 | } |
duke@435 | 234 | methodHandle method() const { return _method; } |
duke@435 | 235 | address code_begin() const { return _code_begin; } |
duke@435 | 236 | address code_end() const { return _code_end; } |
duke@435 | 237 | jvmtiAddrLocationMap* map() const { return _map; } |
duke@435 | 238 | jint map_length() const { return _map_length; } |
duke@435 | 239 | }; |
duke@435 | 240 | |
duke@435 | 241 | |
duke@435 | 242 | // Support class to collect a list of the nmethod CodeBlobs in |
duke@435 | 243 | // the CodeCache. |
duke@435 | 244 | // |
duke@435 | 245 | // Usage :- |
duke@435 | 246 | // |
duke@435 | 247 | // nmethodCollector collector; |
duke@435 | 248 | // |
duke@435 | 249 | // collector.collect(); |
duke@435 | 250 | // JvmtiCodeBlobDesc* blob = collector.first(); |
duke@435 | 251 | // while (blob != NULL) { |
duke@435 | 252 | // : |
duke@435 | 253 | // blob = collector.next(); |
duke@435 | 254 | // } |
duke@435 | 255 | // |
duke@435 | 256 | class nmethodCollector : StackObj { |
duke@435 | 257 | private: |
duke@435 | 258 | GrowableArray<nmethodDesc*>* _nmethods; // collect nmethods |
duke@435 | 259 | int _pos; // iteration support |
duke@435 | 260 | |
duke@435 | 261 | // used during a collection |
duke@435 | 262 | static GrowableArray<nmethodDesc*>* _global_nmethods; |
duke@435 | 263 | static void do_nmethod(nmethod* nm); |
duke@435 | 264 | public: |
duke@435 | 265 | nmethodCollector() { |
duke@435 | 266 | _nmethods = NULL; |
duke@435 | 267 | _pos = -1; |
duke@435 | 268 | } |
duke@435 | 269 | ~nmethodCollector() { |
duke@435 | 270 | if (_nmethods != NULL) { |
duke@435 | 271 | for (int i=0; i<_nmethods->length(); i++) { |
duke@435 | 272 | nmethodDesc* blob = _nmethods->at(i); |
duke@435 | 273 | if (blob->map()!= NULL) { |
duke@435 | 274 | FREE_C_HEAP_ARRAY(jvmtiAddrLocationMap, blob->map()); |
duke@435 | 275 | } |
duke@435 | 276 | } |
duke@435 | 277 | delete _nmethods; |
duke@435 | 278 | } |
duke@435 | 279 | } |
duke@435 | 280 | |
duke@435 | 281 | // collect list of nmethods in the cache |
duke@435 | 282 | void collect(); |
duke@435 | 283 | |
duke@435 | 284 | // iteration support - return first code blob |
duke@435 | 285 | nmethodDesc* first() { |
duke@435 | 286 | assert(_nmethods != NULL, "not collected"); |
duke@435 | 287 | if (_nmethods->length() == 0) { |
duke@435 | 288 | return NULL; |
duke@435 | 289 | } |
duke@435 | 290 | _pos = 0; |
duke@435 | 291 | return _nmethods->at(0); |
duke@435 | 292 | } |
duke@435 | 293 | |
duke@435 | 294 | // iteration support - return next code blob |
duke@435 | 295 | nmethodDesc* next() { |
duke@435 | 296 | assert(_pos >= 0, "iteration not started"); |
duke@435 | 297 | if (_pos+1 >= _nmethods->length()) { |
duke@435 | 298 | return NULL; |
duke@435 | 299 | } |
duke@435 | 300 | return _nmethods->at(++_pos); |
duke@435 | 301 | } |
duke@435 | 302 | }; |
duke@435 | 303 | |
duke@435 | 304 | // used during collection |
duke@435 | 305 | GrowableArray<nmethodDesc*>* nmethodCollector::_global_nmethods; |
duke@435 | 306 | |
duke@435 | 307 | |
duke@435 | 308 | // called for each nmethod in the CodeCache |
duke@435 | 309 | // |
duke@435 | 310 | // This function simply adds a descriptor for each nmethod to the global list. |
duke@435 | 311 | |
duke@435 | 312 | void nmethodCollector::do_nmethod(nmethod* nm) { |
duke@435 | 313 | // ignore zombies |
duke@435 | 314 | if (!nm->is_alive()) { |
duke@435 | 315 | return; |
duke@435 | 316 | } |
duke@435 | 317 | |
duke@435 | 318 | assert(nm->method() != NULL, "checking"); |
duke@435 | 319 | |
duke@435 | 320 | // create the location map for the nmethod. |
duke@435 | 321 | jvmtiAddrLocationMap* map; |
duke@435 | 322 | jint map_length; |
duke@435 | 323 | JvmtiCodeBlobEvents::build_jvmti_addr_location_map(nm, &map, &map_length); |
duke@435 | 324 | |
duke@435 | 325 | // record the nmethod details |
duke@435 | 326 | methodHandle mh(nm->method()); |
duke@435 | 327 | nmethodDesc* snm = new nmethodDesc(mh, |
duke@435 | 328 | nm->code_begin(), |
duke@435 | 329 | nm->code_end(), |
duke@435 | 330 | map, |
duke@435 | 331 | map_length); |
duke@435 | 332 | _global_nmethods->append(snm); |
duke@435 | 333 | } |
duke@435 | 334 | |
duke@435 | 335 | // collects a list of nmethod in the CodeCache. |
duke@435 | 336 | // |
duke@435 | 337 | // The created list is growable array of nmethodDesc - each one describes |
duke@435 | 338 | // a nmethod and includs its JVMTI address location map. |
duke@435 | 339 | |
duke@435 | 340 | void nmethodCollector::collect() { |
duke@435 | 341 | assert_locked_or_safepoint(CodeCache_lock); |
duke@435 | 342 | assert(_global_nmethods == NULL, "checking"); |
duke@435 | 343 | |
duke@435 | 344 | // create the list |
duke@435 | 345 | _global_nmethods = new (ResourceObj::C_HEAP) GrowableArray<nmethodDesc*>(100,true); |
duke@435 | 346 | |
duke@435 | 347 | // any a descriptor for each nmethod to the list. |
duke@435 | 348 | CodeCache::nmethods_do(do_nmethod); |
duke@435 | 349 | |
duke@435 | 350 | // make the list the instance list |
duke@435 | 351 | _nmethods = _global_nmethods; |
duke@435 | 352 | _global_nmethods = NULL; |
duke@435 | 353 | } |
duke@435 | 354 | |
duke@435 | 355 | // Generate a COMPILED_METHOD_LOAD event for each nnmethod |
duke@435 | 356 | |
duke@435 | 357 | jvmtiError JvmtiCodeBlobEvents::generate_compiled_method_load_events(JvmtiEnv* env) { |
duke@435 | 358 | HandleMark hm; |
duke@435 | 359 | nmethodCollector collector; |
duke@435 | 360 | |
duke@435 | 361 | // first collect all nmethods |
duke@435 | 362 | { |
duke@435 | 363 | MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
duke@435 | 364 | collector.collect(); |
duke@435 | 365 | } |
duke@435 | 366 | |
duke@435 | 367 | // iterate over the list and post an event for each nmethod |
duke@435 | 368 | nmethodDesc* nm_desc = collector.first(); |
duke@435 | 369 | while (nm_desc != NULL) { |
duke@435 | 370 | methodOop method = nm_desc->method()(); |
duke@435 | 371 | jmethodID mid = method->jmethod_id(); |
duke@435 | 372 | assert(mid != NULL, "checking"); |
duke@435 | 373 | JvmtiExport::post_compiled_method_load(env, mid, |
duke@435 | 374 | (jint)(nm_desc->code_end() - nm_desc->code_begin()), |
duke@435 | 375 | nm_desc->code_begin(), nm_desc->map_length(), |
duke@435 | 376 | nm_desc->map()); |
duke@435 | 377 | nm_desc = collector.next(); |
duke@435 | 378 | } |
duke@435 | 379 | return JVMTI_ERROR_NONE; |
duke@435 | 380 | } |
duke@435 | 381 | |
duke@435 | 382 | |
duke@435 | 383 | // create a C-heap allocated address location map for an nmethod |
duke@435 | 384 | void JvmtiCodeBlobEvents::build_jvmti_addr_location_map(nmethod *nm, |
duke@435 | 385 | jvmtiAddrLocationMap** map_ptr, |
duke@435 | 386 | jint *map_length_ptr) |
duke@435 | 387 | { |
duke@435 | 388 | ResourceMark rm; |
duke@435 | 389 | jvmtiAddrLocationMap* map = NULL; |
duke@435 | 390 | jint map_length = 0; |
duke@435 | 391 | |
duke@435 | 392 | |
duke@435 | 393 | // Generate line numbers using PcDesc and ScopeDesc info |
duke@435 | 394 | methodHandle mh(nm->method()); |
duke@435 | 395 | |
duke@435 | 396 | if (!mh->is_native()) { |
duke@435 | 397 | PcDesc *pcd; |
duke@435 | 398 | int pcds_in_method; |
duke@435 | 399 | |
duke@435 | 400 | pcds_in_method = (nm->scopes_pcs_end() - nm->scopes_pcs_begin()); |
duke@435 | 401 | map = NEW_C_HEAP_ARRAY(jvmtiAddrLocationMap, pcds_in_method); |
duke@435 | 402 | |
duke@435 | 403 | address scopes_data = nm->scopes_data_begin(); |
duke@435 | 404 | for( pcd = nm->scopes_pcs_begin(); pcd < nm->scopes_pcs_end(); ++pcd ) { |
duke@435 | 405 | ScopeDesc sc0(nm, pcd->scope_decode_offset()); |
duke@435 | 406 | ScopeDesc *sd = &sc0; |
duke@435 | 407 | while( !sd->is_top() ) { sd = sd->sender(); } |
duke@435 | 408 | int bci = sd->bci(); |
duke@435 | 409 | if (bci != InvocationEntryBci) { |
duke@435 | 410 | assert(map_length < pcds_in_method, "checking"); |
duke@435 | 411 | map[map_length].start_address = (const void*)pcd->real_pc(nm); |
duke@435 | 412 | map[map_length].location = bci; |
duke@435 | 413 | ++map_length; |
duke@435 | 414 | } |
duke@435 | 415 | } |
duke@435 | 416 | } |
duke@435 | 417 | |
duke@435 | 418 | *map_ptr = map; |
duke@435 | 419 | *map_length_ptr = map_length; |
duke@435 | 420 | } |