Mercurial > hg > graal-compiler
annotate src/share/vm/prims/jvmtiCodeBlobEvents.cpp @ 1257:7b4415a18c8a
Merge
author | kvn |
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date | Fri, 12 Feb 2010 15:27:36 -0800 |
parents | f70b0d9ab095 |
children | c18cbe5936b8 |
rev | line source |
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0 | 1 /* |
931
72088be4b386
6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents:
0
diff
changeset
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2 * Copyright 2003-2009 Sun Microsystems, Inc. All Rights Reserved. |
0 | 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_jvmtiCodeBlobEvents.cpp.incl" | |
27 | |
28 // Support class to collect a list of the non-nmethod CodeBlobs in | |
29 // the CodeCache. | |
30 // | |
31 // This class actually creates a list of JvmtiCodeBlobDesc - each JvmtiCodeBlobDesc | |
32 // describes a single CodeBlob in the CodeCache. Note that collection is | |
33 // done to a static list - this is because CodeCache::blobs_do is defined | |
34 // as void CodeCache::blobs_do(void f(CodeBlob* nm)) and hence requires | |
35 // a C or static method. | |
36 // | |
37 // Usage :- | |
38 // | |
39 // CodeBlobCollector collector; | |
40 // | |
41 // collector.collect(); | |
42 // JvmtiCodeBlobDesc* blob = collector.first(); | |
43 // while (blob != NULL) { | |
44 // : | |
45 // blob = collector.next(); | |
46 // } | |
47 // | |
48 | |
49 class CodeBlobCollector : StackObj { | |
50 private: | |
51 GrowableArray<JvmtiCodeBlobDesc*>* _code_blobs; // collected blobs | |
52 int _pos; // iterator position | |
53 | |
54 // used during a collection | |
55 static GrowableArray<JvmtiCodeBlobDesc*>* _global_code_blobs; | |
56 static void do_blob(CodeBlob* cb); | |
57 public: | |
58 CodeBlobCollector() { | |
59 _code_blobs = NULL; | |
60 _pos = -1; | |
61 } | |
62 ~CodeBlobCollector() { | |
63 if (_code_blobs != NULL) { | |
64 for (int i=0; i<_code_blobs->length(); i++) { | |
65 FreeHeap(_code_blobs->at(i)); | |
66 } | |
67 delete _code_blobs; | |
68 } | |
69 } | |
70 | |
71 // collect list of code blobs in the cache | |
72 void collect(); | |
73 | |
74 // iteration support - return first code blob | |
75 JvmtiCodeBlobDesc* first() { | |
76 assert(_code_blobs != NULL, "not collected"); | |
77 if (_code_blobs->length() == 0) { | |
78 return NULL; | |
79 } | |
80 _pos = 0; | |
81 return _code_blobs->at(0); | |
82 } | |
83 | |
84 // iteration support - return next code blob | |
85 JvmtiCodeBlobDesc* next() { | |
86 assert(_pos >= 0, "iteration not started"); | |
87 if (_pos+1 >= _code_blobs->length()) { | |
88 return NULL; | |
89 } | |
90 return _code_blobs->at(++_pos); | |
91 } | |
92 | |
93 }; | |
94 | |
95 // used during collection | |
96 GrowableArray<JvmtiCodeBlobDesc*>* CodeBlobCollector::_global_code_blobs; | |
97 | |
98 | |
99 // called for each CodeBlob in the CodeCache | |
100 // | |
101 // This function filters out nmethods as it is only interested in | |
102 // other CodeBlobs. This function also filters out CodeBlobs that have | |
103 // a duplicate starting address as previous blobs. This is needed to | |
104 // handle the case where multiple stubs are generated into a single | |
105 // BufferBlob. | |
106 | |
107 void CodeBlobCollector::do_blob(CodeBlob* cb) { | |
108 | |
109 // ignore nmethods | |
110 if (cb->is_nmethod()) { | |
111 return; | |
112 } | |
113 | |
114 // check if this starting address has been seen already - the | |
115 // assumption is that stubs are inserted into the list before the | |
116 // enclosing BufferBlobs. | |
117 address addr = cb->instructions_begin(); | |
118 for (int i=0; i<_global_code_blobs->length(); i++) { | |
119 JvmtiCodeBlobDesc* scb = _global_code_blobs->at(i); | |
120 if (addr == scb->code_begin()) { | |
121 return; | |
122 } | |
123 } | |
124 | |
125 // we must name the CodeBlob - some CodeBlobs already have names :- | |
126 // - stubs used by compiled code to call a (static) C++ runtime routine | |
127 // - non-relocatable machine code such as the interpreter, stubroutines, etc. | |
128 // - various singleton blobs | |
129 // | |
130 // others are unnamed so we create a name :- | |
131 // - OSR adapter (interpreter frame that has been on-stack replaced) | |
132 // - I2C and C2I adapters | |
133 const char* name = NULL; | |
134 if (cb->is_runtime_stub()) { | |
135 name = ((RuntimeStub*)cb)->name(); | |
136 } | |
137 if (cb->is_buffer_blob()) { | |
138 name = ((BufferBlob*)cb)->name(); | |
139 } | |
140 if (cb->is_deoptimization_stub() || cb->is_safepoint_stub()) { | |
141 name = ((SingletonBlob*)cb)->name(); | |
142 } | |
143 if (cb->is_uncommon_trap_stub() || cb->is_exception_stub()) { | |
144 name = ((SingletonBlob*)cb)->name(); | |
145 } | |
146 | |
147 // record the CodeBlob details as a JvmtiCodeBlobDesc | |
148 JvmtiCodeBlobDesc* scb = new JvmtiCodeBlobDesc(name, cb->instructions_begin(), | |
149 cb->instructions_end()); | |
150 _global_code_blobs->append(scb); | |
151 } | |
152 | |
153 | |
154 // collects a list of CodeBlobs in the CodeCache. | |
155 // | |
156 // The created list is growable array of JvmtiCodeBlobDesc - each one describes | |
157 // a CodeBlob. Note that the list is static - this is because CodeBlob::blobs_do | |
158 // requires a a C or static function so we can't use an instance function. This | |
159 // isn't a problem as the iteration is serial anyway as we need the CodeCache_lock | |
160 // to iterate over the code cache. | |
161 // | |
162 // Note that the CodeBlobs in the CodeCache will include BufferBlobs that may | |
163 // contain multiple stubs. As a profiler is interested in the stubs rather than | |
164 // the enclosing container we first iterate over the stub code descriptors so | |
165 // that the stubs go into the list first. do_blob will then filter out the | |
166 // enclosing blobs if the starting address of the enclosing blobs matches the | |
167 // starting address of first stub generated in the enclosing blob. | |
168 | |
169 void CodeBlobCollector::collect() { | |
170 assert_locked_or_safepoint(CodeCache_lock); | |
171 assert(_global_code_blobs == NULL, "checking"); | |
172 | |
173 // create the global list | |
174 _global_code_blobs = new (ResourceObj::C_HEAP) GrowableArray<JvmtiCodeBlobDesc*>(50,true); | |
175 | |
176 // iterate over the stub code descriptors and put them in the list first. | |
177 int index = 0; | |
178 StubCodeDesc* desc; | |
179 while ((desc = StubCodeDesc::desc_for_index(++index)) != NULL) { | |
180 _global_code_blobs->append(new JvmtiCodeBlobDesc(desc->name(), desc->begin(), desc->end())); | |
181 } | |
182 | |
183 // next iterate over all the non-nmethod code blobs and add them to | |
184 // the list - as noted above this will filter out duplicates and | |
185 // enclosing blobs. | |
186 CodeCache::blobs_do(do_blob); | |
187 | |
188 // make the global list the instance list so that it can be used | |
189 // for other iterations. | |
190 _code_blobs = _global_code_blobs; | |
191 _global_code_blobs = NULL; | |
192 } | |
193 | |
194 | |
195 // Generate a DYNAMIC_CODE_GENERATED event for each non-nmethod code blob. | |
196 | |
197 jvmtiError JvmtiCodeBlobEvents::generate_dynamic_code_events(JvmtiEnv* env) { | |
198 CodeBlobCollector collector; | |
199 | |
200 // first collect all the code blobs | |
201 { | |
202 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
203 collector.collect(); | |
204 } | |
205 | |
206 // iterate over the collected list and post an event for each blob | |
207 JvmtiCodeBlobDesc* blob = collector.first(); | |
208 while (blob != NULL) { | |
209 JvmtiExport::post_dynamic_code_generated(env, blob->name(), blob->code_begin(), blob->code_end()); | |
210 blob = collector.next(); | |
211 } | |
212 return JVMTI_ERROR_NONE; | |
213 } | |
214 | |
215 | |
216 // Support class to describe a nmethod in the CodeCache | |
217 | |
218 class nmethodDesc: public CHeapObj { | |
219 private: | |
220 methodHandle _method; | |
221 address _code_begin; | |
222 address _code_end; | |
223 jvmtiAddrLocationMap* _map; | |
224 jint _map_length; | |
225 public: | |
226 nmethodDesc(methodHandle method, address code_begin, address code_end, | |
227 jvmtiAddrLocationMap* map, jint map_length) { | |
228 _method = method; | |
229 _code_begin = code_begin; | |
230 _code_end = code_end; | |
231 _map = map; | |
232 _map_length = map_length; | |
233 } | |
234 methodHandle method() const { return _method; } | |
235 address code_begin() const { return _code_begin; } | |
236 address code_end() const { return _code_end; } | |
237 jvmtiAddrLocationMap* map() const { return _map; } | |
238 jint map_length() const { return _map_length; } | |
239 }; | |
240 | |
241 | |
242 // Support class to collect a list of the nmethod CodeBlobs in | |
243 // the CodeCache. | |
244 // | |
245 // Usage :- | |
246 // | |
247 // nmethodCollector collector; | |
248 // | |
249 // collector.collect(); | |
250 // JvmtiCodeBlobDesc* blob = collector.first(); | |
251 // while (blob != NULL) { | |
252 // : | |
253 // blob = collector.next(); | |
254 // } | |
255 // | |
256 class nmethodCollector : StackObj { | |
257 private: | |
258 GrowableArray<nmethodDesc*>* _nmethods; // collect nmethods | |
259 int _pos; // iteration support | |
260 | |
261 // used during a collection | |
262 static GrowableArray<nmethodDesc*>* _global_nmethods; | |
263 static void do_nmethod(nmethod* nm); | |
264 public: | |
265 nmethodCollector() { | |
266 _nmethods = NULL; | |
267 _pos = -1; | |
268 } | |
269 ~nmethodCollector() { | |
270 if (_nmethods != NULL) { | |
271 for (int i=0; i<_nmethods->length(); i++) { | |
272 nmethodDesc* blob = _nmethods->at(i); | |
273 if (blob->map()!= NULL) { | |
274 FREE_C_HEAP_ARRAY(jvmtiAddrLocationMap, blob->map()); | |
275 } | |
276 } | |
277 delete _nmethods; | |
278 } | |
279 } | |
280 | |
281 // collect list of nmethods in the cache | |
282 void collect(); | |
283 | |
284 // iteration support - return first code blob | |
285 nmethodDesc* first() { | |
286 assert(_nmethods != NULL, "not collected"); | |
287 if (_nmethods->length() == 0) { | |
288 return NULL; | |
289 } | |
290 _pos = 0; | |
291 return _nmethods->at(0); | |
292 } | |
293 | |
294 // iteration support - return next code blob | |
295 nmethodDesc* next() { | |
296 assert(_pos >= 0, "iteration not started"); | |
297 if (_pos+1 >= _nmethods->length()) { | |
298 return NULL; | |
299 } | |
300 return _nmethods->at(++_pos); | |
301 } | |
302 }; | |
303 | |
304 // used during collection | |
305 GrowableArray<nmethodDesc*>* nmethodCollector::_global_nmethods; | |
306 | |
307 | |
308 // called for each nmethod in the CodeCache | |
309 // | |
310 // This function simply adds a descriptor for each nmethod to the global list. | |
311 | |
312 void nmethodCollector::do_nmethod(nmethod* nm) { | |
313 // ignore zombies | |
314 if (!nm->is_alive()) { | |
315 return; | |
316 } | |
317 | |
318 assert(nm->method() != NULL, "checking"); | |
319 | |
320 // create the location map for the nmethod. | |
321 jvmtiAddrLocationMap* map; | |
322 jint map_length; | |
323 JvmtiCodeBlobEvents::build_jvmti_addr_location_map(nm, &map, &map_length); | |
324 | |
325 // record the nmethod details | |
326 methodHandle mh(nm->method()); | |
327 nmethodDesc* snm = new nmethodDesc(mh, | |
328 nm->code_begin(), | |
329 nm->code_end(), | |
330 map, | |
331 map_length); | |
332 _global_nmethods->append(snm); | |
333 } | |
334 | |
335 // collects a list of nmethod in the CodeCache. | |
336 // | |
337 // The created list is growable array of nmethodDesc - each one describes | |
338 // a nmethod and includs its JVMTI address location map. | |
339 | |
340 void nmethodCollector::collect() { | |
341 assert_locked_or_safepoint(CodeCache_lock); | |
342 assert(_global_nmethods == NULL, "checking"); | |
343 | |
344 // create the list | |
345 _global_nmethods = new (ResourceObj::C_HEAP) GrowableArray<nmethodDesc*>(100,true); | |
346 | |
347 // any a descriptor for each nmethod to the list. | |
348 CodeCache::nmethods_do(do_nmethod); | |
349 | |
350 // make the list the instance list | |
351 _nmethods = _global_nmethods; | |
352 _global_nmethods = NULL; | |
353 } | |
354 | |
355 // Generate a COMPILED_METHOD_LOAD event for each nnmethod | |
356 | |
357 jvmtiError JvmtiCodeBlobEvents::generate_compiled_method_load_events(JvmtiEnv* env) { | |
358 HandleMark hm; | |
359 nmethodCollector collector; | |
360 | |
361 // first collect all nmethods | |
362 { | |
363 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
364 collector.collect(); | |
365 } | |
366 | |
367 // iterate over the list and post an event for each nmethod | |
368 nmethodDesc* nm_desc = collector.first(); | |
369 while (nm_desc != NULL) { | |
370 methodOop method = nm_desc->method()(); | |
371 jmethodID mid = method->jmethod_id(); | |
372 assert(mid != NULL, "checking"); | |
373 JvmtiExport::post_compiled_method_load(env, mid, | |
374 (jint)(nm_desc->code_end() - nm_desc->code_begin()), | |
375 nm_desc->code_begin(), nm_desc->map_length(), | |
376 nm_desc->map()); | |
377 nm_desc = collector.next(); | |
378 } | |
379 return JVMTI_ERROR_NONE; | |
380 } | |
381 | |
382 | |
383 // create a C-heap allocated address location map for an nmethod | |
384 void JvmtiCodeBlobEvents::build_jvmti_addr_location_map(nmethod *nm, | |
385 jvmtiAddrLocationMap** map_ptr, | |
386 jint *map_length_ptr) | |
387 { | |
388 ResourceMark rm; | |
389 jvmtiAddrLocationMap* map = NULL; | |
390 jint map_length = 0; | |
391 | |
392 | |
393 // Generate line numbers using PcDesc and ScopeDesc info | |
394 methodHandle mh(nm->method()); | |
395 | |
396 if (!mh->is_native()) { | |
397 PcDesc *pcd; | |
398 int pcds_in_method; | |
399 | |
400 pcds_in_method = (nm->scopes_pcs_end() - nm->scopes_pcs_begin()); | |
401 map = NEW_C_HEAP_ARRAY(jvmtiAddrLocationMap, pcds_in_method); | |
402 | |
403 address scopes_data = nm->scopes_data_begin(); | |
404 for( pcd = nm->scopes_pcs_begin(); pcd < nm->scopes_pcs_end(); ++pcd ) { | |
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
931
diff
changeset
|
405 ScopeDesc sc0(nm, pcd->scope_decode_offset(), pcd->should_reexecute(), pcd->return_oop()); |
0 | 406 ScopeDesc *sd = &sc0; |
407 while( !sd->is_top() ) { sd = sd->sender(); } | |
408 int bci = sd->bci(); | |
409 if (bci != InvocationEntryBci) { | |
410 assert(map_length < pcds_in_method, "checking"); | |
411 map[map_length].start_address = (const void*)pcd->real_pc(nm); | |
412 map[map_length].location = bci; | |
413 ++map_length; | |
414 } | |
415 } | |
416 } | |
417 | |
418 *map_ptr = map; | |
419 *map_length_ptr = map_length; | |
420 } |