Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/perfData.cpp @ 23614:32b682649973 jdk8u75-b04
8132051: Better byte behavior
Reviewed-by: coleenp, roland
author | kevinw |
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date | Fri, 15 Jan 2016 22:33:15 +0000 |
parents | 78bbf4d43a14 |
children | 52b4284cb496 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2001, 2014, Oracle and/or its affiliates. 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/vmSymbols.hpp" | |
27 #include "oops/oop.inline.hpp" | |
28 #include "runtime/handles.inline.hpp" | |
29 #include "runtime/java.hpp" | |
30 #include "runtime/mutex.hpp" | |
31 #include "runtime/mutexLocker.hpp" | |
32 #include "runtime/os.hpp" | |
33 #include "runtime/perfData.hpp" | |
34 #include "utilities/exceptions.hpp" | |
35 #include "utilities/globalDefinitions.hpp" | |
0 | 36 |
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37 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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38 |
0 | 39 PerfDataList* PerfDataManager::_all = NULL; |
40 PerfDataList* PerfDataManager::_sampled = NULL; | |
41 PerfDataList* PerfDataManager::_constants = NULL; | |
42 | |
43 /* | |
44 * The jvmstat global and subsysem jvmstat counter name spaces. The top | |
45 * level name spaces imply the interface stability level of the counter, | |
46 * which generally follows the Java package, class, and property naming | |
47 * conventions. The CounterNS enumeration values should be used to index | |
48 * into this array. | |
49 */ | |
50 const char* PerfDataManager::_name_spaces[] = { | |
51 // top level name spaces | |
52 "java", // stable and supported name space | |
53 "com.sun", // unstable but supported name space | |
54 "sun", // unstable and unsupported name space | |
55 // subsystem name spaces | |
56 "java.gc", // Garbage Collection name spaces | |
57 "com.sun.gc", | |
58 "sun.gc", | |
59 "java.ci", // Compiler name spaces | |
60 "com.sun.ci", | |
61 "sun.ci", | |
62 "java.cls", // Class Loader name spaces | |
63 "com.sun.cls", | |
64 "sun.cls", | |
65 "java.rt", // Runtime name spaces | |
66 "com.sun.rt", | |
67 "sun.rt", | |
68 "java.os", // Operating System name spaces | |
69 "com.sun.os", | |
70 "sun.os", | |
71 "java.threads", // Threads System name spaces | |
72 "com.sun.threads", | |
73 "sun.threads", | |
74 "java.property", // Java Property name spaces | |
75 "com.sun.property", | |
76 "sun.property", | |
77 "", | |
78 }; | |
79 | |
80 PerfData::PerfData(CounterNS ns, const char* name, Units u, Variability v) | |
81 : _name(NULL), _u(u), _v(v), _valuep(NULL), | |
82 _on_c_heap(false) { | |
83 | |
84 const char* prefix = PerfDataManager::ns_to_string(ns); | |
85 | |
6197 | 86 _name = NEW_C_HEAP_ARRAY(char, strlen(name) + strlen(prefix) + 2, mtInternal); |
0 | 87 assert(_name != NULL && strlen(name) != 0, "invalid name"); |
88 | |
89 if (ns == NULL_NS) { | |
90 // No prefix is added to counters with the NULL_NS namespace. | |
91 strcpy(_name, name); | |
92 // set the F_Supported flag based on the counter name prefix. | |
93 if (PerfDataManager::is_stable_supported(_name) || | |
94 PerfDataManager::is_unstable_supported(_name)) { | |
95 _flags = F_Supported; | |
96 } | |
97 else { | |
98 _flags = F_None; | |
99 } | |
100 } | |
101 else { | |
102 sprintf(_name, "%s.%s", prefix, name); | |
103 // set the F_Supported flag based on the given namespace. | |
104 if (PerfDataManager::is_stable_supported(ns) || | |
105 PerfDataManager::is_unstable_supported(ns)) { | |
106 _flags = F_Supported; | |
107 } | |
108 else { | |
109 _flags = F_None; | |
110 } | |
111 } | |
112 } | |
113 | |
114 PerfData::~PerfData() { | |
115 if (_name != NULL) { | |
6197 | 116 FREE_C_HEAP_ARRAY(char, _name, mtInternal); |
0 | 117 } |
118 if (is_on_c_heap()) { | |
6197 | 119 FREE_C_HEAP_ARRAY(PerfDataEntry, _pdep, mtInternal); |
0 | 120 } |
121 } | |
122 | |
123 void PerfData::create_entry(BasicType dtype, size_t dsize, size_t vlen) { | |
124 | |
125 size_t dlen = vlen==0 ? 1 : vlen; | |
126 | |
127 size_t namelen = strlen(name()) + 1; // include null terminator | |
128 size_t size = sizeof(PerfDataEntry) + namelen; | |
129 size_t pad_length = ((size % dsize) == 0) ? 0 : dsize - (size % dsize); | |
130 size += pad_length; | |
131 size_t data_start = size; | |
132 size += (dsize * dlen); | |
133 | |
134 // align size to assure allocation in units of 8 bytes | |
135 int align = sizeof(jlong) - 1; | |
136 size = ((size + align) & ~align); | |
137 char* psmp = PerfMemory::alloc(size); | |
138 | |
139 if (psmp == NULL) { | |
140 // out of PerfMemory memory resources. allocate on the C heap | |
141 // to avoid vm termination. | |
6197 | 142 psmp = NEW_C_HEAP_ARRAY(char, size, mtInternal); |
0 | 143 _on_c_heap = true; |
144 } | |
145 | |
146 // compute the addresses for the name and data | |
147 char* cname = psmp + sizeof(PerfDataEntry); | |
148 | |
149 // data is in the last dsize*dlen bytes of the entry | |
150 void* valuep = (void*) (psmp + data_start); | |
151 | |
152 assert(is_on_c_heap() || PerfMemory::contains(cname), "just checking"); | |
153 assert(is_on_c_heap() || PerfMemory::contains((char*)valuep), "just checking"); | |
154 | |
155 // copy the name, including null terminator, into PerfData memory | |
156 strcpy(cname, name()); | |
157 | |
158 | |
159 // set the header values in PerfData memory | |
160 PerfDataEntry* pdep = (PerfDataEntry*)psmp; | |
161 pdep->entry_length = (jint)size; | |
162 pdep->name_offset = (jint) ((uintptr_t) cname - (uintptr_t) psmp); | |
163 pdep->vector_length = (jint)vlen; | |
164 pdep->data_type = (jbyte) type2char(dtype); | |
165 pdep->data_units = units(); | |
166 pdep->data_variability = variability(); | |
167 pdep->flags = (jbyte)flags(); | |
168 pdep->data_offset = (jint) data_start; | |
169 | |
170 if (PerfTraceDataCreation) { | |
171 tty->print("name = %s, dtype = %d, variability = %d," | |
172 " units = %d, dsize = %d, vlen = %d," | |
173 " pad_length = %d, size = %d, on_c_heap = %s," | |
174 " address = " INTPTR_FORMAT "," | |
175 " data address = " INTPTR_FORMAT "\n", | |
176 cname, dtype, variability(), | |
177 units(), dsize, vlen, | |
178 pad_length, size, is_on_c_heap() ? "TRUE":"FALSE", | |
179 psmp, valuep); | |
180 } | |
181 | |
182 // record the start of the entry and the location of the data field. | |
183 _pdep = pdep; | |
184 _valuep = valuep; | |
185 | |
186 // mark the PerfData memory region as having been updated. | |
187 PerfMemory::mark_updated(); | |
188 } | |
189 | |
190 PerfLong::PerfLong(CounterNS ns, const char* namep, Units u, Variability v) | |
191 : PerfData(ns, namep, u, v) { | |
192 | |
193 create_entry(T_LONG, sizeof(jlong)); | |
194 } | |
195 | |
196 int PerfLong::format(char* buffer, int length) { | |
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197 return jio_snprintf(buffer, length, JLONG_FORMAT, *(jlong*)_valuep); |
0 | 198 } |
199 | |
200 PerfLongVariant::PerfLongVariant(CounterNS ns, const char* namep, Units u, | |
201 Variability v, jlong* sampled) | |
202 : PerfLong(ns, namep, u, v), | |
203 _sampled(sampled), _sample_helper(NULL) { | |
204 | |
205 sample(); | |
206 } | |
207 | |
208 PerfLongVariant::PerfLongVariant(CounterNS ns, const char* namep, Units u, | |
209 Variability v, PerfLongSampleHelper* helper) | |
210 : PerfLong(ns, namep, u, v), | |
211 _sampled(NULL), _sample_helper(helper) { | |
212 | |
213 sample(); | |
214 } | |
215 | |
216 void PerfLongVariant::sample() { | |
217 | |
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218 // JJJ - This should not happen. Maybe the first sample is taken |
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219 // while the _sample_helper is being null'ed out. |
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220 // assert(_sample_helper != NULL || _sampled != NULL, "unexpected state"); |
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221 if (_sample_helper == NULL) return; |
0 | 222 |
223 if (_sample_helper != NULL) { | |
224 *(jlong*)_valuep = _sample_helper->take_sample(); | |
225 } | |
226 else if (_sampled != NULL) { | |
227 *(jlong*)_valuep = *_sampled; | |
228 } | |
229 } | |
230 | |
231 PerfByteArray::PerfByteArray(CounterNS ns, const char* namep, Units u, | |
232 Variability v, jint length) | |
233 : PerfData(ns, namep, u, v), _length(length) { | |
234 | |
235 create_entry(T_BYTE, sizeof(jbyte), (size_t)_length); | |
236 } | |
237 | |
238 void PerfString::set_string(const char* s2) { | |
239 | |
240 // copy n bytes of the string, assuring the null string is | |
241 // copied if s2 == NULL. | |
242 strncpy((char *)_valuep, s2 == NULL ? "" : s2, _length); | |
243 | |
244 // assure the string is null terminated when strlen(s2) >= _length | |
245 ((char*)_valuep)[_length-1] = '\0'; | |
246 } | |
247 | |
248 int PerfString::format(char* buffer, int length) { | |
249 return jio_snprintf(buffer, length, "%s", (char*)_valuep); | |
250 } | |
251 | |
252 PerfStringConstant::PerfStringConstant(CounterNS ns, const char* namep, | |
253 const char* initial_value) | |
254 : PerfString(ns, namep, V_Constant, | |
255 initial_value == NULL ? 1 : | |
256 MIN2((jint)(strlen((char*)initial_value)+1), | |
257 (jint)(PerfMaxStringConstLength+1)), | |
258 initial_value) { | |
259 | |
260 if (PrintMiscellaneous && Verbose) { | |
261 if (is_valid() && initial_value != NULL && | |
262 ((jint)strlen(initial_value) > (jint)PerfMaxStringConstLength)) { | |
263 | |
264 warning("Truncating PerfStringConstant: name = %s," | |
265 " length = " INT32_FORMAT "," | |
266 " PerfMaxStringConstLength = " INT32_FORMAT "\n", | |
267 namep, | |
268 (jint)strlen(initial_value), | |
269 (jint)PerfMaxStringConstLength); | |
270 } | |
271 } | |
272 } | |
273 | |
274 | |
275 | |
276 | |
277 | |
278 | |
279 void PerfDataManager::destroy() { | |
280 | |
281 if (_all == NULL) | |
282 // destroy already called, or initialization never happened | |
283 return; | |
284 | |
285 for (int index = 0; index < _all->length(); index++) { | |
286 PerfData* p = _all->at(index); | |
287 delete p; | |
288 } | |
289 | |
290 delete(_all); | |
291 delete(_sampled); | |
292 delete(_constants); | |
293 | |
294 _all = NULL; | |
295 _sampled = NULL; | |
296 _constants = NULL; | |
297 } | |
298 | |
299 void PerfDataManager::add_item(PerfData* p, bool sampled) { | |
300 | |
301 MutexLocker ml(PerfDataManager_lock); | |
302 | |
303 if (_all == NULL) { | |
304 _all = new PerfDataList(100); | |
305 } | |
306 | |
307 assert(!_all->contains(p->name()), "duplicate name added"); | |
308 | |
309 // add to the list of all perf data items | |
310 _all->append(p); | |
311 | |
312 if (p->variability() == PerfData::V_Constant) { | |
313 if (_constants == NULL) { | |
314 _constants = new PerfDataList(25); | |
315 } | |
316 _constants->append(p); | |
317 return; | |
318 } | |
319 | |
320 if (sampled) { | |
321 if (_sampled == NULL) { | |
322 _sampled = new PerfDataList(25); | |
323 } | |
324 _sampled->append(p); | |
325 } | |
326 } | |
327 | |
10405 | 328 PerfData* PerfDataManager::find_by_name(const char* name) { |
329 return _all->find_by_name(name); | |
330 } | |
331 | |
0 | 332 PerfDataList* PerfDataManager::all() { |
333 | |
334 MutexLocker ml(PerfDataManager_lock); | |
335 | |
336 if (_all == NULL) | |
337 return NULL; | |
338 | |
339 PerfDataList* clone = _all->clone(); | |
340 return clone; | |
341 } | |
342 | |
343 PerfDataList* PerfDataManager::sampled() { | |
344 | |
345 MutexLocker ml(PerfDataManager_lock); | |
346 | |
347 if (_sampled == NULL) | |
348 return NULL; | |
349 | |
350 PerfDataList* clone = _sampled->clone(); | |
351 return clone; | |
352 } | |
353 | |
354 PerfDataList* PerfDataManager::constants() { | |
355 | |
356 MutexLocker ml(PerfDataManager_lock); | |
357 | |
358 if (_constants == NULL) | |
359 return NULL; | |
360 | |
361 PerfDataList* clone = _constants->clone(); | |
362 return clone; | |
363 } | |
364 | |
365 char* PerfDataManager::counter_name(const char* ns, const char* name) { | |
366 assert(ns != NULL, "ns string required"); | |
367 assert(name != NULL, "name string required"); | |
368 | |
369 size_t len = strlen(ns) + strlen(name) + 2; | |
370 char* result = NEW_RESOURCE_ARRAY(char, len); | |
371 sprintf(result, "%s.%s", ns, name); | |
372 return result; | |
373 } | |
374 | |
375 char* PerfDataManager::name_space(const char* ns, const char* sub, | |
376 int instance) { | |
377 char intbuf[40]; | |
378 jio_snprintf(intbuf, 40, UINT32_FORMAT, instance); | |
379 return name_space(ns, name_space(sub, intbuf)); | |
380 } | |
381 | |
382 char *PerfDataManager::name_space(const char* ns, int instance) { | |
383 char intbuf[40]; | |
384 jio_snprintf(intbuf, 40, UINT32_FORMAT, instance); | |
385 return name_space(ns, intbuf); | |
386 } | |
387 | |
388 PerfStringConstant* PerfDataManager::create_string_constant(CounterNS ns, | |
389 const char* name, | |
390 const char* s, | |
391 TRAPS) { | |
392 | |
393 PerfStringConstant* p = new PerfStringConstant(ns, name, s); | |
394 | |
395 if (!p->is_valid()) { | |
396 // allocation of native resources failed. | |
397 delete p; | |
398 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); | |
399 } | |
400 | |
401 add_item(p, false); | |
402 | |
403 return p; | |
404 } | |
405 | |
406 PerfLongConstant* PerfDataManager::create_long_constant(CounterNS ns, | |
407 const char* name, | |
408 PerfData::Units u, | |
409 jlong val, TRAPS) { | |
410 | |
411 PerfLongConstant* p = new PerfLongConstant(ns, name, u, val); | |
412 | |
413 if (!p->is_valid()) { | |
414 // allocation of native resources failed. | |
415 delete p; | |
416 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); | |
417 } | |
418 | |
419 add_item(p, false); | |
420 | |
421 return p; | |
422 } | |
423 | |
424 PerfStringVariable* PerfDataManager::create_string_variable(CounterNS ns, | |
425 const char* name, | |
426 jint max_length, | |
427 const char* s, | |
428 TRAPS) { | |
429 | |
430 if (max_length == 0 && s != NULL) max_length = (jint)strlen(s); | |
431 | |
432 assert(max_length != 0, "PerfStringVariable with length 0"); | |
433 | |
434 PerfStringVariable* p = new PerfStringVariable(ns, name, max_length, s); | |
435 | |
436 if (!p->is_valid()) { | |
437 // allocation of native resources failed. | |
438 delete p; | |
439 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); | |
440 } | |
441 | |
442 add_item(p, false); | |
443 | |
444 return p; | |
445 } | |
446 | |
447 PerfLongVariable* PerfDataManager::create_long_variable(CounterNS ns, | |
448 const char* name, | |
449 PerfData::Units u, | |
450 jlong ival, TRAPS) { | |
451 | |
452 PerfLongVariable* p = new PerfLongVariable(ns, name, u, ival); | |
453 | |
454 if (!p->is_valid()) { | |
455 // allocation of native resources failed. | |
456 delete p; | |
457 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); | |
458 } | |
459 | |
460 add_item(p, false); | |
461 | |
462 return p; | |
463 } | |
464 | |
465 PerfLongVariable* PerfDataManager::create_long_variable(CounterNS ns, | |
466 const char* name, | |
467 PerfData::Units u, | |
468 jlong* sp, TRAPS) { | |
469 | |
470 // Sampled counters not supported if UsePerfData is false | |
471 if (!UsePerfData) return NULL; | |
472 | |
473 PerfLongVariable* p = new PerfLongVariable(ns, name, u, sp); | |
474 | |
475 if (!p->is_valid()) { | |
476 // allocation of native resources failed. | |
477 delete p; | |
478 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); | |
479 } | |
480 | |
481 add_item(p, true); | |
482 | |
483 return p; | |
484 } | |
485 | |
486 PerfLongVariable* PerfDataManager::create_long_variable(CounterNS ns, | |
487 const char* name, | |
488 PerfData::Units u, | |
489 PerfSampleHelper* sh, | |
490 TRAPS) { | |
491 | |
492 // Sampled counters not supported if UsePerfData is false | |
493 if (!UsePerfData) return NULL; | |
494 | |
495 PerfLongVariable* p = new PerfLongVariable(ns, name, u, sh); | |
496 | |
497 if (!p->is_valid()) { | |
498 // allocation of native resources failed. | |
499 delete p; | |
500 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); | |
501 } | |
502 | |
503 add_item(p, true); | |
504 | |
505 return p; | |
506 } | |
507 | |
508 PerfLongCounter* PerfDataManager::create_long_counter(CounterNS ns, | |
509 const char* name, | |
510 PerfData::Units u, | |
511 jlong ival, TRAPS) { | |
512 | |
513 PerfLongCounter* p = new PerfLongCounter(ns, name, u, ival); | |
514 | |
515 if (!p->is_valid()) { | |
516 // allocation of native resources failed. | |
517 delete p; | |
518 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); | |
519 } | |
520 | |
521 add_item(p, false); | |
522 | |
523 return p; | |
524 } | |
525 | |
526 PerfLongCounter* PerfDataManager::create_long_counter(CounterNS ns, | |
527 const char* name, | |
528 PerfData::Units u, | |
529 jlong* sp, TRAPS) { | |
530 | |
531 // Sampled counters not supported if UsePerfData is false | |
532 if (!UsePerfData) return NULL; | |
533 | |
534 PerfLongCounter* p = new PerfLongCounter(ns, name, u, sp); | |
535 | |
536 if (!p->is_valid()) { | |
537 // allocation of native resources failed. | |
538 delete p; | |
539 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); | |
540 } | |
541 | |
542 add_item(p, true); | |
543 | |
544 return p; | |
545 } | |
546 | |
547 PerfLongCounter* PerfDataManager::create_long_counter(CounterNS ns, | |
548 const char* name, | |
549 PerfData::Units u, | |
550 PerfSampleHelper* sh, | |
551 TRAPS) { | |
552 | |
553 // Sampled counters not supported if UsePerfData is false | |
554 if (!UsePerfData) return NULL; | |
555 | |
556 PerfLongCounter* p = new PerfLongCounter(ns, name, u, sh); | |
557 | |
558 if (!p->is_valid()) { | |
559 // allocation of native resources failed. | |
560 delete p; | |
561 THROW_0(vmSymbols::java_lang_OutOfMemoryError()); | |
562 } | |
563 | |
564 add_item(p, true); | |
565 | |
566 return p; | |
567 } | |
568 | |
569 PerfDataList::PerfDataList(int length) { | |
570 | |
6197 | 571 _set = new(ResourceObj::C_HEAP, mtInternal) PerfDataArray(length, true); |
0 | 572 } |
573 | |
574 PerfDataList::PerfDataList(PerfDataList* p) { | |
575 | |
6197 | 576 _set = new(ResourceObj::C_HEAP, mtInternal) PerfDataArray(p->length(), true); |
0 | 577 |
578 _set->appendAll(p->get_impl()); | |
579 } | |
580 | |
581 PerfDataList::~PerfDataList() { | |
582 | |
583 delete _set; | |
584 | |
585 } | |
586 | |
587 bool PerfDataList::by_name(void* name, PerfData* pd) { | |
588 | |
589 if (pd == NULL) | |
590 return false; | |
591 | |
592 return strcmp((const char*)name, pd->name()) == 0; | |
593 } | |
594 | |
595 PerfData* PerfDataList::find_by_name(const char* name) { | |
596 | |
6854
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597 // if add_item hasn't been called the list won't be initialized |
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598 if (this == NULL) |
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599 return NULL; |
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600 |
0 | 601 int i = _set->find((void*)name, PerfDataList::by_name); |
602 | |
603 if (i >= 0 && i <= _set->length()) | |
604 return _set->at(i); | |
605 else | |
606 return NULL; | |
607 } | |
608 | |
609 PerfDataList* PerfDataList::clone() { | |
610 | |
611 PerfDataList* copy = new PerfDataList(this); | |
612 | |
613 assert(copy != NULL, "just checking"); | |
614 | |
615 return copy; | |
616 } |