1 /*
2 * Copyright (c) 1997, 2014, 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 #include "precompiled.hpp"
26 #include "code/codeBlob.hpp"
27 #include "code/codeCache.hpp"
28 #include "code/compiledIC.hpp"
29 #include "code/dependencies.hpp"
30 #include "code/icBuffer.hpp"
31 #include "code/nmethod.hpp"
32 #include "code/pcDesc.hpp"
33 #include "compiler/compileBroker.hpp"
34 #include "gc_implementation/shared/markSweep.hpp"
35 #include "memory/allocation.inline.hpp"
36 #include "memory/gcLocker.hpp"
37 #include "memory/iterator.hpp"
38 #include "memory/resourceArea.hpp"
39 #include "oops/method.hpp"
40 #include "oops/objArrayOop.hpp"
41 #include "oops/oop.inline.hpp"
42 #include "runtime/handles.inline.hpp"
43 #include "runtime/arguments.hpp"
44 #include "runtime/icache.hpp"
45 #include "runtime/java.hpp"
46 #include "runtime/mutexLocker.hpp"
47 #include "runtime/compilationPolicy.hpp"
48 #include "services/memoryService.hpp"
49 #include "trace/tracing.hpp"
50 #include "utilities/xmlstream.hpp"
51 #ifdef COMPILER1
52 #include "c1/c1_Compilation.hpp"
53 #include "c1/c1_Compiler.hpp"
54 #endif
55 #ifdef COMPILER2
56 #include "opto/c2compiler.hpp"
57 #include "opto/compile.hpp"
58 #include "opto/node.hpp"
59 #endif
60
61 // Helper class for printing in CodeCache
62 class CodeBlob_sizes {
63 private:
64 int count;
65 int total_size;
66 int header_size;
67 int code_size;
68 int stub_size;
69 int relocation_size;
70 int scopes_oop_size;
71 int scopes_metadata_size;
72 int scopes_data_size;
73 int scopes_pcs_size;
74
75 public:
76 CodeBlob_sizes() {
77 count = 0;
78 total_size = 0;
79 header_size = 0;
80 code_size = 0;
81 stub_size = 0;
82 relocation_size = 0;
83 scopes_oop_size = 0;
84 scopes_metadata_size = 0;
85 scopes_data_size = 0;
86 scopes_pcs_size = 0;
87 }
88
89 int total() { return total_size; }
90 bool is_empty() { return count == 0; }
91
92 void print(const char* title) {
93 tty->print_cr(" #%d %s = %dK (hdr %d%%, loc %d%%, code %d%%, stub %d%%, [oops %d%%, metadata %d%%, data %d%%, pcs %d%%])",
94 count,
95 title,
96 (int)(total() / K),
97 header_size * 100 / total_size,
98 relocation_size * 100 / total_size,
99 code_size * 100 / total_size,
100 stub_size * 100 / total_size,
101 scopes_oop_size * 100 / total_size,
102 scopes_metadata_size * 100 / total_size,
103 scopes_data_size * 100 / total_size,
104 scopes_pcs_size * 100 / total_size);
105 }
106
107 void add(CodeBlob* cb) {
108 count++;
109 total_size += cb->size();
110 header_size += cb->header_size();
111 relocation_size += cb->relocation_size();
112 if (cb->is_nmethod()) {
113 nmethod* nm = cb->as_nmethod_or_null();
114 code_size += nm->insts_size();
115 stub_size += nm->stub_size();
116
117 scopes_oop_size += nm->oops_size();
118 scopes_metadata_size += nm->metadata_size();
119 scopes_data_size += nm->scopes_data_size();
120 scopes_pcs_size += nm->scopes_pcs_size();
121 } else {
122 code_size += cb->code_size();
123 }
124 }
125 };
126
127 // Iterate over all CodeHeaps
128 #define FOR_ALL_HEAPS(heap) for (GrowableArrayIterator<CodeHeap*> heap = _heaps->begin(); heap != _heaps->end(); ++heap)
129 // Iterate over all CodeBlobs (cb) on the given CodeHeap
130 #define FOR_ALL_BLOBS(cb, heap) for (CodeBlob* cb = first_blob(heap); cb != NULL; cb = next_blob(heap, cb))
131
132 address CodeCache::_low_bound = 0;
133 address CodeCache::_high_bound = 0;
134 int CodeCache::_number_of_blobs = 0;
135 int CodeCache::_number_of_adapters = 0;
136 int CodeCache::_number_of_nmethods = 0;
137 int CodeCache::_number_of_nmethods_with_dependencies = 0;
138 bool CodeCache::_needs_cache_clean = false;
139 nmethod* CodeCache::_scavenge_root_nmethods = NULL;
140 int CodeCache::_codemem_full_count = 0;
141
142 // Initialize array of CodeHeaps
143 GrowableArray<CodeHeap*>* CodeCache::_heaps = new(ResourceObj::C_HEAP, mtCode) GrowableArray<CodeHeap*> (CodeBlobType::All, true);
144
145 void CodeCache::initialize_heaps() {
146 // Determine size of compiler buffers
147 size_t code_buffers_size = 0;
148 #ifdef COMPILER1
149 // C1 temporary code buffers (see Compiler::init_buffer_blob())
150 const int c1_count = CompilationPolicy::policy()->compiler_count(CompLevel_simple);
151 code_buffers_size += c1_count * Compiler::code_buffer_size();
152 #endif
153 #ifdef COMPILER2
154 // C2 scratch buffers (see Compile::init_scratch_buffer_blob())
155 const int c2_count = CompilationPolicy::policy()->compiler_count(CompLevel_full_optimization);
156 // Initial size of constant table (this may be increased if a compiled method needs more space)
157 code_buffers_size += c2_count * C2Compiler::initial_code_buffer_size();
158 #endif
159
160 // Calculate default CodeHeap sizes if not set by user
161 if (!FLAG_IS_CMDLINE(NonNMethodCodeHeapSize) && !FLAG_IS_CMDLINE(ProfiledCodeHeapSize)
162 && !FLAG_IS_CMDLINE(NonProfiledCodeHeapSize)) {
163 // Increase default NonNMethodCodeHeapSize to account for compiler buffers
164 FLAG_SET_ERGO(uintx, NonNMethodCodeHeapSize, NonNMethodCodeHeapSize + code_buffers_size);
165
166 // Check if we have enough space for the non-nmethod code heap
167 if (ReservedCodeCacheSize > NonNMethodCodeHeapSize) {
168 // Use the default value for NonNMethodCodeHeapSize and one half of the
169 // remaining size for non-profiled methods and one half for profiled methods
170 size_t remaining_size = ReservedCodeCacheSize - NonNMethodCodeHeapSize;
171 size_t profiled_size = remaining_size / 2;
172 size_t non_profiled_size = remaining_size - profiled_size;
173 FLAG_SET_ERGO(uintx, ProfiledCodeHeapSize, profiled_size);
174 FLAG_SET_ERGO(uintx, NonProfiledCodeHeapSize, non_profiled_size);
175 } else {
176 // Use all space for the non-nmethod heap and set other heaps to minimal size
177 FLAG_SET_ERGO(uintx, NonNMethodCodeHeapSize, ReservedCodeCacheSize - os::vm_page_size() * 2);
178 FLAG_SET_ERGO(uintx, ProfiledCodeHeapSize, os::vm_page_size());
179 FLAG_SET_ERGO(uintx, NonProfiledCodeHeapSize, os::vm_page_size());
180 }
181 }
182
183 // We do not need the profiled CodeHeap, use all space for the non-profiled CodeHeap
184 if(!heap_available(CodeBlobType::MethodProfiled)) {
185 FLAG_SET_ERGO(uintx, NonProfiledCodeHeapSize, NonProfiledCodeHeapSize + ProfiledCodeHeapSize);
186 FLAG_SET_ERGO(uintx, ProfiledCodeHeapSize, 0);
187 }
188 // We do not need the non-profiled CodeHeap, use all space for the non-nmethod CodeHeap
189 if(!heap_available(CodeBlobType::MethodNonProfiled)) {
190 FLAG_SET_ERGO(uintx, NonNMethodCodeHeapSize, NonNMethodCodeHeapSize + NonProfiledCodeHeapSize);
191 FLAG_SET_ERGO(uintx, NonProfiledCodeHeapSize, 0);
192 }
193
194 // Make sure we have enough space for VM internal code
195 uint min_code_cache_size = (CodeCacheMinimumUseSpace DEBUG_ONLY(* 3)) + CodeCacheMinimumFreeSpace;
196 if (NonNMethodCodeHeapSize < (min_code_cache_size + code_buffers_size)) {
197 vm_exit_during_initialization("Not enough space in non-nmethod code heap to run VM.");
198 }
199 guarantee(NonProfiledCodeHeapSize + ProfiledCodeHeapSize + NonNMethodCodeHeapSize <= ReservedCodeCacheSize, "Size check");
200
201 // Align reserved sizes of CodeHeaps
202 size_t non_method_size = ReservedCodeSpace::allocation_align_size_up(NonNMethodCodeHeapSize);
203 size_t profiled_size = ReservedCodeSpace::allocation_align_size_up(ProfiledCodeHeapSize);
204 size_t non_profiled_size = ReservedCodeSpace::allocation_align_size_up(NonProfiledCodeHeapSize);
205
206 // Compute initial sizes of CodeHeaps
207 size_t init_non_method_size = MIN2(InitialCodeCacheSize, non_method_size);
208 size_t init_profiled_size = MIN2(InitialCodeCacheSize, profiled_size);
209 size_t init_non_profiled_size = MIN2(InitialCodeCacheSize, non_profiled_size);
210
211 // Reserve one continuous chunk of memory for CodeHeaps and split it into
212 // parts for the individual heaps. The memory layout looks like this:
213 // ---------- high -----------
214 // Non-profiled nmethods
215 // Profiled nmethods
216 // Non-nmethods
217 // ---------- low ------------
218 ReservedCodeSpace rs = reserve_heap_memory(non_profiled_size + profiled_size + non_method_size);
219 ReservedSpace non_method_space = rs.first_part(non_method_size);
220 ReservedSpace rest = rs.last_part(non_method_size);
221 ReservedSpace profiled_space = rest.first_part(profiled_size);
222 ReservedSpace non_profiled_space = rest.last_part(profiled_size);
223
224 // Non-nmethods (stubs, adapters, ...)
225 add_heap(non_method_space, "CodeHeap 'non-nmethods'", init_non_method_size, CodeBlobType::NonNMethod);
226 // Tier 2 and tier 3 (profiled) methods
227 add_heap(profiled_space, "CodeHeap 'profiled nmethods'", init_profiled_size, CodeBlobType::MethodProfiled);
228 // Tier 1 and tier 4 (non-profiled) methods and native methods
229 add_heap(non_profiled_space, "CodeHeap 'non-profiled nmethods'", init_non_profiled_size, CodeBlobType::MethodNonProfiled);
230 }
231
232 ReservedCodeSpace CodeCache::reserve_heap_memory(size_t size) {
233 // Determine alignment
234 const size_t page_size = os::can_execute_large_page_memory() ?
235 MIN2(os::page_size_for_region(InitialCodeCacheSize, 8),
236 os::page_size_for_region(size, 8)) :
237 os::vm_page_size();
238 const size_t granularity = os::vm_allocation_granularity();
239 const size_t r_align = MAX2(page_size, granularity);
240 const size_t r_size = align_size_up(size, r_align);
241 const size_t rs_align = page_size == (size_t) os::vm_page_size() ? 0 :
242 MAX2(page_size, granularity);
243
244 ReservedCodeSpace rs(r_size, rs_align, rs_align > 0);
245
246 // Initialize bounds
247 _low_bound = (address)rs.base();
248 _high_bound = _low_bound + rs.size();
249
250 return rs;
251 }
252
253 bool CodeCache::heap_available(int code_blob_type) {
254 if (!SegmentedCodeCache) {
255 // No segmentation: use a single code heap
256 return (code_blob_type == CodeBlobType::All);
257 } else if (Arguments::mode() == Arguments::_int) {
258 // Interpreter only: we don't need any method code heaps
259 return (code_blob_type == CodeBlobType::NonNMethod);
260 } else if (TieredCompilation && (TieredStopAtLevel > CompLevel_simple)) {
261 // Tiered compilation: use all code heaps
262 return (code_blob_type < CodeBlobType::All);
263 } else {
264 // No TieredCompilation: we only need the non-nmethod and non-profiled code heap
265 return (code_blob_type == CodeBlobType::NonNMethod) ||
266 (code_blob_type == CodeBlobType::MethodNonProfiled);
267 }
268 }
269
270 void CodeCache::add_heap(ReservedSpace rs, const char* name, size_t size_initial, int code_blob_type) {
271 // Check if heap is needed
272 if (!heap_available(code_blob_type)) {
273 return;
274 }
275
276 // Create CodeHeap
277 CodeHeap* heap = new CodeHeap(name, code_blob_type);
278 _heaps->append(heap);
279
280 // Reserve Space
281 size_initial = round_to(size_initial, os::vm_page_size());
282
283 if (!heap->reserve(rs, size_initial, CodeCacheSegmentSize)) {
284 vm_exit_during_initialization("Could not reserve enough space for code cache");
285 }
286
287 // Register the CodeHeap
288 MemoryService::add_code_heap_memory_pool(heap, name);
289 }
290
291 CodeHeap* CodeCache::get_code_heap(CodeBlob* cb) {
292 assert(cb != NULL, "CodeBlob is null");
293 FOR_ALL_HEAPS(heap) {
294 if ((*heap)->contains(cb)) {
295 return *heap;
296 }
297 }
298 ShouldNotReachHere();
299 return NULL;
300 }
301
302 CodeHeap* CodeCache::get_code_heap(int code_blob_type) {
303 FOR_ALL_HEAPS(heap) {
304 if ((*heap)->accepts(code_blob_type)) {
305 return *heap;
306 }
307 }
308 return NULL;
309 }
310
311 CodeBlob* CodeCache::first_blob(CodeHeap* heap) {
312 assert_locked_or_safepoint(CodeCache_lock);
313 assert(heap != NULL, "heap is null");
314 return (CodeBlob*)heap->first();
315 }
316
317 CodeBlob* CodeCache::first_blob(int code_blob_type) {
318 if (heap_available(code_blob_type)) {
319 return first_blob(get_code_heap(code_blob_type));
320 } else {
321 return NULL;
322 }
323 }
324
325 CodeBlob* CodeCache::next_blob(CodeHeap* heap, CodeBlob* cb) {
326 assert_locked_or_safepoint(CodeCache_lock);
327 assert(heap != NULL, "heap is null");
328 return (CodeBlob*)heap->next(cb);
329 }
330
331 CodeBlob* CodeCache::next_blob(CodeBlob* cb) {
332 return next_blob(get_code_heap(cb), cb);
333 }
334
335 CodeBlob* CodeCache::allocate(int size, int code_blob_type, bool is_critical) {
336 // Do not seize the CodeCache lock here--if the caller has not
337 // already done so, we are going to lose bigtime, since the code
338 // cache will contain a garbage CodeBlob until the caller can
339 // run the constructor for the CodeBlob subclass he is busy
340 // instantiating.
341 assert_locked_or_safepoint(CodeCache_lock);
342 assert(size > 0, "allocation request must be reasonable");
343 if (size <= 0) {
344 return NULL;
345 }
346 CodeBlob* cb = NULL;
347
348 // Get CodeHeap for the given CodeBlobType
349 CodeHeap* heap = get_code_heap(code_blob_type);
350 assert(heap != NULL, "heap is null");
351
352 while (true) {
353 cb = (CodeBlob*)heap->allocate(size, is_critical);
354 if (cb != NULL) break;
355 if (!heap->expand_by(CodeCacheExpansionSize)) {
356 // Expansion failed
357 if (SegmentedCodeCache && (code_blob_type == CodeBlobType::NonNMethod)) {
358 // Fallback solution: Store non-nmethod code in the non-profiled code heap
359 return allocate(size, CodeBlobType::MethodNonProfiled, is_critical);
360 }
361 return NULL;
362 }
363 if (PrintCodeCacheExtension) {
364 ResourceMark rm;
365 if (SegmentedCodeCache) {
366 tty->print("%s", heap->name());
367 } else {
368 tty->print("CodeCache");
369 }
370 tty->print_cr(" extended to [" INTPTR_FORMAT ", " INTPTR_FORMAT "] (" SSIZE_FORMAT " bytes)",
371 (intptr_t)heap->low_boundary(), (intptr_t)heap->high(),
372 (address)heap->high() - (address)heap->low_boundary());
373 }
374 }
375 print_trace("allocation", cb, size);
376 _number_of_blobs++;
377 return cb;
378 }
379
380 void CodeCache::free(CodeBlob* cb) {
381 assert_locked_or_safepoint(CodeCache_lock);
382
383 print_trace("free", cb);
384 if (cb->is_nmethod()) {
385 _number_of_nmethods--;
386 if (((nmethod *)cb)->has_dependencies()) {
387 _number_of_nmethods_with_dependencies--;
388 }
389 }
390 if (cb->is_adapter_blob()) {
391 _number_of_adapters--;
392 }
393 _number_of_blobs--;
394
395 // Get heap for given CodeBlob and deallocate
396 get_code_heap(cb)->deallocate(cb);
397
398 assert(_number_of_blobs >= 0, "sanity check");
399 }
400
401 void CodeCache::commit(CodeBlob* cb) {
402 // this is called by nmethod::nmethod, which must already own CodeCache_lock
403 assert_locked_or_safepoint(CodeCache_lock);
404 if (cb->is_nmethod()) {
405 _number_of_nmethods++;
406 if (((nmethod *)cb)->has_dependencies()) {
407 _number_of_nmethods_with_dependencies++;
408 }
409 }
410 if (cb->is_adapter_blob()) {
411 _number_of_adapters++;
412 }
413
414 // flush the hardware I-cache
415 ICache::invalidate_range(cb->content_begin(), cb->content_size());
416 }
417
418 bool CodeCache::contains(void *p) {
419 // It should be ok to call contains without holding a lock
420 FOR_ALL_HEAPS(heap) {
421 if ((*heap)->contains(p)) {
422 return true;
423 }
424 }
425 return false;
426 }
427
428 // This method is safe to call without holding the CodeCache_lock, as long as a dead CodeBlob is not
429 // looked up (i.e., one that has been marked for deletion). It only depends on the _segmap to contain
430 // valid indices, which it will always do, as long as the CodeBlob is not in the process of being recycled.
431 CodeBlob* CodeCache::find_blob(void* start) {
432 CodeBlob* result = find_blob_unsafe(start);
433 // We could potentially look up non_entrant methods
434 guarantee(result == NULL || !result->is_zombie() || result->is_locked_by_vm() || is_error_reported(), "unsafe access to zombie method");
435 return result;
436 }
437
438 // Lookup that does not fail if you lookup a zombie method (if you call this, be sure to know
439 // what you are doing)
440 CodeBlob* CodeCache::find_blob_unsafe(void* start) {
441 // NMT can walk the stack before code cache is created
442 if (_heaps == NULL || _heaps->is_empty()) return NULL;
443
444 FOR_ALL_HEAPS(heap) {
445 CodeBlob* result = (CodeBlob*) (*heap)->find_start(start);
446 if (result != NULL && result->blob_contains((address)start)) {
447 return result;
448 }
449 }
450 return NULL;
451 }
452
453 nmethod* CodeCache::find_nmethod(void* start) {
454 CodeBlob* cb = find_blob(start);
455 assert(cb->is_nmethod(), "did not find an nmethod");
456 return (nmethod*)cb;
457 }
458
459 void CodeCache::blobs_do(void f(CodeBlob* nm)) {
460 assert_locked_or_safepoint(CodeCache_lock);
461 FOR_ALL_HEAPS(heap) {
462 FOR_ALL_BLOBS(cb, *heap) {
463 f(cb);
464 }
465 }
466 }
467
468 void CodeCache::nmethods_do(void f(nmethod* nm)) {
469 assert_locked_or_safepoint(CodeCache_lock);
470 NMethodIterator iter;
471 while(iter.next()) {
472 f(iter.method());
473 }
474 }
475
476 void CodeCache::alive_nmethods_do(void f(nmethod* nm)) {
477 assert_locked_or_safepoint(CodeCache_lock);
478 NMethodIterator iter;
479 while(iter.next_alive()) {
480 f(iter.method());
481 }
482 }
483
484 int CodeCache::alignment_unit() {
485 return (int)_heaps->first()->alignment_unit();
486 }
487
488 int CodeCache::alignment_offset() {
489 return (int)_heaps->first()->alignment_offset();
490 }
491
492 // Mark nmethods for unloading if they contain otherwise unreachable oops.
493 void CodeCache::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) {
494 assert_locked_or_safepoint(CodeCache_lock);
495 NMethodIterator iter;
496 while(iter.next_alive()) {
497 iter.method()->do_unloading(is_alive, unloading_occurred);
498 }
499 }
500
501 void CodeCache::blobs_do(CodeBlobClosure* f) {
502 assert_locked_or_safepoint(CodeCache_lock);
503 FOR_ALL_HEAPS(heap) {
504 FOR_ALL_BLOBS(cb, *heap) {
505 if (cb->is_alive()) {
506 f->do_code_blob(cb);
507
508 #ifdef ASSERT
509 if (cb->is_nmethod())
510 ((nmethod*)cb)->verify_scavenge_root_oops();
511 #endif //ASSERT
512 }
513 }
514 }
515 }
516
517 // Walk the list of methods which might contain non-perm oops.
518 void CodeCache::scavenge_root_nmethods_do(CodeBlobClosure* f) {
519 assert_locked_or_safepoint(CodeCache_lock);
520
521 if (UseG1GC) {
522 return;
523 }
524
525 debug_only(mark_scavenge_root_nmethods());
526
527 for (nmethod* cur = scavenge_root_nmethods(); cur != NULL; cur = cur->scavenge_root_link()) {
528 debug_only(cur->clear_scavenge_root_marked());
529 assert(cur->scavenge_root_not_marked(), "");
530 assert(cur->on_scavenge_root_list(), "else shouldn't be on this list");
531
532 bool is_live = (!cur->is_zombie() && !cur->is_unloaded());
533 #ifndef PRODUCT
534 if (TraceScavenge) {
535 cur->print_on(tty, is_live ? "scavenge root" : "dead scavenge root"); tty->cr();
536 }
537 #endif //PRODUCT
538 if (is_live) {
539 // Perform cur->oops_do(f), maybe just once per nmethod.
540 f->do_code_blob(cur);
541 }
542 }
543
544 // Check for stray marks.
545 debug_only(verify_perm_nmethods(NULL));
546 }
547
548 void CodeCache::add_scavenge_root_nmethod(nmethod* nm) {
549 assert_locked_or_safepoint(CodeCache_lock);
550
551 if (UseG1GC) {
552 return;
553 }
554
555 nm->set_on_scavenge_root_list();
556 nm->set_scavenge_root_link(_scavenge_root_nmethods);
557 set_scavenge_root_nmethods(nm);
558 print_trace("add_scavenge_root", nm);
559 }
560
561 void CodeCache::drop_scavenge_root_nmethod(nmethod* nm) {
562 assert_locked_or_safepoint(CodeCache_lock);
563
564 if (UseG1GC) {
565 return;
566 }
567
568 print_trace("drop_scavenge_root", nm);
569 nmethod* last = NULL;
570 nmethod* cur = scavenge_root_nmethods();
571 while (cur != NULL) {
572 nmethod* next = cur->scavenge_root_link();
573 if (cur == nm) {
574 if (last != NULL)
575 last->set_scavenge_root_link(next);
576 else set_scavenge_root_nmethods(next);
577 nm->set_scavenge_root_link(NULL);
578 nm->clear_on_scavenge_root_list();
579 return;
580 }
581 last = cur;
582 cur = next;
583 }
584 assert(false, "should have been on list");
585 }
586
587 void CodeCache::prune_scavenge_root_nmethods() {
588 assert_locked_or_safepoint(CodeCache_lock);
589
590 if (UseG1GC) {
591 return;
592 }
593
594 debug_only(mark_scavenge_root_nmethods());
595
596 nmethod* last = NULL;
597 nmethod* cur = scavenge_root_nmethods();
598 while (cur != NULL) {
599 nmethod* next = cur->scavenge_root_link();
600 debug_only(cur->clear_scavenge_root_marked());
601 assert(cur->scavenge_root_not_marked(), "");
602 assert(cur->on_scavenge_root_list(), "else shouldn't be on this list");
603
604 if (!cur->is_zombie() && !cur->is_unloaded()
605 && cur->detect_scavenge_root_oops()) {
606 // Keep it. Advance 'last' to prevent deletion.
607 last = cur;
608 } else {
609 // Prune it from the list, so we don't have to look at it any more.
610 print_trace("prune_scavenge_root", cur);
611 cur->set_scavenge_root_link(NULL);
612 cur->clear_on_scavenge_root_list();
613 if (last != NULL)
614 last->set_scavenge_root_link(next);
615 else set_scavenge_root_nmethods(next);
616 }
617 cur = next;
618 }
619
620 // Check for stray marks.
621 debug_only(verify_perm_nmethods(NULL));
622 }
623
624 #ifndef PRODUCT
625 void CodeCache::asserted_non_scavengable_nmethods_do(CodeBlobClosure* f) {
626 if (UseG1GC) {
627 return;
628 }
629
630 // While we are here, verify the integrity of the list.
631 mark_scavenge_root_nmethods();
632 for (nmethod* cur = scavenge_root_nmethods(); cur != NULL; cur = cur->scavenge_root_link()) {
633 assert(cur->on_scavenge_root_list(), "else shouldn't be on this list");
634 cur->clear_scavenge_root_marked();
635 }
636 verify_perm_nmethods(f);
637 }
638
639 // Temporarily mark nmethods that are claimed to be on the non-perm list.
640 void CodeCache::mark_scavenge_root_nmethods() {
641 NMethodIterator iter;
642 while(iter.next_alive()) {
643 nmethod* nm = iter.method();
644 assert(nm->scavenge_root_not_marked(), "clean state");
645 if (nm->on_scavenge_root_list())
646 nm->set_scavenge_root_marked();
647 }
648 }
649
650 // If the closure is given, run it on the unlisted nmethods.
651 // Also make sure that the effects of mark_scavenge_root_nmethods is gone.
652 void CodeCache::verify_perm_nmethods(CodeBlobClosure* f_or_null) {
653 NMethodIterator iter;
654 while(iter.next_alive()) {
655 nmethod* nm = iter.method();
656 bool call_f = (f_or_null != NULL);
657 assert(nm->scavenge_root_not_marked(), "must be already processed");
658 if (nm->on_scavenge_root_list())
659 call_f = false; // don't show this one to the client
660 nm->verify_scavenge_root_oops();
661 if (call_f) f_or_null->do_code_blob(nm);
662 }
663 }
664 #endif //PRODUCT
665
666 void CodeCache::verify_clean_inline_caches() {
667 #ifdef ASSERT
668 NMethodIterator iter;
669 while(iter.next_alive()) {
670 nmethod* nm = iter.method();
671 assert(!nm->is_unloaded(), "Tautology");
672 nm->verify_clean_inline_caches();
673 nm->verify();
674 }
675 #endif
676 }
677
678 void CodeCache::verify_icholder_relocations() {
679 #ifdef ASSERT
680 // make sure that we aren't leaking icholders
681 int count = 0;
682 FOR_ALL_HEAPS(heap) {
683 FOR_ALL_BLOBS(cb, *heap) {
684 if (cb->is_nmethod()) {
685 nmethod* nm = (nmethod*)cb;
686 count += nm->verify_icholder_relocations();
687 }
688 }
689 }
690
691 assert(count + InlineCacheBuffer::pending_icholder_count() + CompiledICHolder::live_not_claimed_count() ==
692 CompiledICHolder::live_count(), "must agree");
693 #endif
694 }
695
696 void CodeCache::gc_prologue() {
697 }
698
699 void CodeCache::gc_epilogue() {
700 assert_locked_or_safepoint(CodeCache_lock);
701 NMethodIterator iter;
702 while(iter.next_alive()) {
703 nmethod* nm = iter.method();
704 assert(!nm->is_unloaded(), "Tautology");
705 if (needs_cache_clean()) {
706 nm->cleanup_inline_caches();
707 }
708 DEBUG_ONLY(nm->verify());
709 DEBUG_ONLY(nm->verify_oop_relocations());
710 }
711 set_needs_cache_clean(false);
712 prune_scavenge_root_nmethods();
713
714 verify_icholder_relocations();
715 }
716
717 void CodeCache::verify_oops() {
718 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
719 VerifyOopClosure voc;
720 NMethodIterator iter;
721 while(iter.next_alive()) {
722 nmethod* nm = iter.method();
723 nm->oops_do(&voc);
724 nm->verify_oop_relocations();
725 }
726 }
727
728 size_t CodeCache::capacity() {
729 size_t cap = 0;
730 FOR_ALL_HEAPS(heap) {
731 cap += (*heap)->capacity();
732 }
733 return cap;
734 }
735
736 size_t CodeCache::unallocated_capacity(int code_blob_type) {
737 CodeHeap* heap = get_code_heap(code_blob_type);
738 return (heap != NULL) ? heap->unallocated_capacity() : 0;
739 }
740
741 size_t CodeCache::unallocated_capacity() {
742 size_t unallocated_cap = 0;
743 FOR_ALL_HEAPS(heap) {
744 unallocated_cap += (*heap)->unallocated_capacity();
745 }
746 return unallocated_cap;
747 }
748
749 size_t CodeCache::max_capacity() {
750 size_t max_cap = 0;
751 FOR_ALL_HEAPS(heap) {
752 max_cap += (*heap)->max_capacity();
753 }
754 return max_cap;
755 }
756
757 /**
758 * Returns true if a CodeHeap is full and sets code_blob_type accordingly.
759 */
760 bool CodeCache::is_full(int* code_blob_type) {
761 FOR_ALL_HEAPS(heap_iterator) {
762 CodeHeap* heap = *heap_iterator;
763 // Do not check the non-nmethod code heap because we can store
764 // non-nmethod code in the non-profiled code heap (see comment
765 // 'fallback solution' in CodeCache::allocate).
766 if (heap->code_blob_type() != CodeBlobType::NonNMethod &&
767 heap->unallocated_capacity() < CodeCacheMinimumFreeSpace) {
768 *code_blob_type = heap->code_blob_type();
769 return true;
770 }
771 }
772 return false;
773 }
774
775 /**
776 * Returns the reverse free ratio. E.g., if 25% (1/4) of the code heap
777 * is free, reverse_free_ratio() returns 4.
778 */
779 double CodeCache::reverse_free_ratio(int code_blob_type) {
780 CodeHeap* heap = get_code_heap(code_blob_type);
781 if (heap == NULL) {
782 return 0;
783 }
784 double unallocated_capacity = (double)(heap->unallocated_capacity() - CodeCacheMinimumFreeSpace);
785 double max_capacity = (double)heap->max_capacity();
786 return max_capacity / unallocated_capacity;
787 }
788
789 size_t CodeCache::bytes_allocated_in_freelists() {
790 size_t allocated_bytes = 0;
791 FOR_ALL_HEAPS(heap) {
792 allocated_bytes += (*heap)->allocated_in_freelist();
793 }
794 return allocated_bytes;
795 }
796
797 int CodeCache::allocated_segments() {
798 int number_of_segments = 0;
799 FOR_ALL_HEAPS(heap) {
800 number_of_segments += (*heap)->allocated_segments();
801 }
802 return number_of_segments;
803 }
804
805 size_t CodeCache::freelists_length() {
806 size_t length = 0;
807 FOR_ALL_HEAPS(heap) {
808 length += (*heap)->freelist_length();
809 }
810 return length;
811 }
812
813 void icache_init();
814
815 void CodeCache::initialize() {
816 assert(CodeCacheSegmentSize >= (uintx)CodeEntryAlignment, "CodeCacheSegmentSize must be large enough to align entry points");
817 #ifdef COMPILER2
818 assert(CodeCacheSegmentSize >= (uintx)OptoLoopAlignment, "CodeCacheSegmentSize must be large enough to align inner loops");
819 #endif
820 assert(CodeCacheSegmentSize >= sizeof(jdouble), "CodeCacheSegmentSize must be large enough to align constants");
821 // This was originally just a check of the alignment, causing failure, instead, round
822 // the code cache to the page size. In particular, Solaris is moving to a larger
823 // default page size.
824 CodeCacheExpansionSize = round_to(CodeCacheExpansionSize, os::vm_page_size());
825
826 if (SegmentedCodeCache) {
827 // Use multiple code heaps
828 initialize_heaps();
829 } else {
830 // Use a single code heap
831 ReservedCodeSpace rs = reserve_heap_memory(ReservedCodeCacheSize);
832 add_heap(rs, "CodeCache", InitialCodeCacheSize, CodeBlobType::All);
833 }
834
835 // Initialize ICache flush mechanism
836 // This service is needed for os::register_code_area
837 icache_init();
838
839 // Give OS a chance to register generated code area.
840 // This is used on Windows 64 bit platforms to register
841 // Structured Exception Handlers for our generated code.
842 os::register_code_area((char*)low_bound(), (char*)high_bound());
843 }
844
845 void codeCache_init() {
846 CodeCache::initialize();
847 }
848
849 //------------------------------------------------------------------------------------------------
850
851 int CodeCache::number_of_nmethods_with_dependencies() {
852 return _number_of_nmethods_with_dependencies;
853 }
854
855 void CodeCache::clear_inline_caches() {
856 assert_locked_or_safepoint(CodeCache_lock);
857 NMethodIterator iter;
858 while(iter.next_alive()) {
859 iter.method()->clear_inline_caches();
860 }
861 }
862
863 // Keeps track of time spent for checking dependencies
864 NOT_PRODUCT(static elapsedTimer dependentCheckTime;)
865
866 int CodeCache::mark_for_deoptimization(DepChange& changes) {
867 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
868 int number_of_marked_CodeBlobs = 0;
869
870 // search the hierarchy looking for nmethods which are affected by the loading of this class
871
872 // then search the interfaces this class implements looking for nmethods
873 // which might be dependent of the fact that an interface only had one
874 // implementor.
875 // nmethod::check_all_dependencies works only correctly, if no safepoint
876 // can happen
877 No_Safepoint_Verifier nsv;
878 for (DepChange::ContextStream str(changes, nsv); str.next(); ) {
879 Klass* d = str.klass();
880 number_of_marked_CodeBlobs += InstanceKlass::cast(d)->mark_dependent_nmethods(changes);
881 }
882
883 #ifndef PRODUCT
884 if (VerifyDependencies) {
885 // Object pointers are used as unique identifiers for dependency arguments. This
886 // is only possible if no safepoint, i.e., GC occurs during the verification code.
887 dependentCheckTime.start();
888 nmethod::check_all_dependencies(changes);
889 dependentCheckTime.stop();
890 }
891 #endif
892
893 return number_of_marked_CodeBlobs;
894 }
895
896
897 #ifdef HOTSWAP
898 int CodeCache::mark_for_evol_deoptimization(instanceKlassHandle dependee) {
899 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
900 int number_of_marked_CodeBlobs = 0;
901
902 // Deoptimize all methods of the evolving class itself
903 Array<Method*>* old_methods = dependee->methods();
904 for (int i = 0; i < old_methods->length(); i++) {
905 ResourceMark rm;
906 Method* old_method = old_methods->at(i);
907 nmethod *nm = old_method->code();
908 if (nm != NULL) {
909 nm->mark_for_deoptimization();
910 number_of_marked_CodeBlobs++;
911 }
912 }
913
914 NMethodIterator iter;
915 while(iter.next_alive()) {
916 nmethod* nm = iter.method();
917 if (nm->is_marked_for_deoptimization()) {
918 // ...Already marked in the previous pass; don't count it again.
919 } else if (nm->is_evol_dependent_on(dependee())) {
920 ResourceMark rm;
921 nm->mark_for_deoptimization();
922 number_of_marked_CodeBlobs++;
923 } else {
924 // flush caches in case they refer to a redefined Method*
925 nm->clear_inline_caches();
926 }
927 }
928
929 return number_of_marked_CodeBlobs;
930 }
931 #endif // HOTSWAP
932
933
934 // Deoptimize all methods
935 void CodeCache::mark_all_nmethods_for_deoptimization() {
936 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
937 NMethodIterator iter;
938 while(iter.next_alive()) {
939 nmethod* nm = iter.method();
940 if (!nm->method()->is_method_handle_intrinsic()) {
941 nm->mark_for_deoptimization();
942 }
943 }
944 }
945
946 int CodeCache::mark_for_deoptimization(Method* dependee) {
947 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
948 int number_of_marked_CodeBlobs = 0;
949
950 NMethodIterator iter;
951 while(iter.next_alive()) {
952 nmethod* nm = iter.method();
953 if (nm->is_dependent_on_method(dependee)) {
954 ResourceMark rm;
955 nm->mark_for_deoptimization();
956 number_of_marked_CodeBlobs++;
957 }
958 }
959
960 return number_of_marked_CodeBlobs;
961 }
962
963 void CodeCache::make_marked_nmethods_zombies() {
964 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint");
965 NMethodIterator iter;
966 while(iter.next_alive()) {
967 nmethod* nm = iter.method();
968 if (nm->is_marked_for_deoptimization()) {
969
970 // If the nmethod has already been made non-entrant and it can be converted
971 // then zombie it now. Otherwise make it non-entrant and it will eventually
972 // be zombied when it is no longer seen on the stack. Note that the nmethod
973 // might be "entrant" and not on the stack and so could be zombied immediately
974 // but we can't tell because we don't track it on stack until it becomes
975 // non-entrant.
976
977 if (nm->is_not_entrant() && nm->can_not_entrant_be_converted()) {
978 nm->make_zombie();
979 } else {
980 nm->make_not_entrant();
981 }
982 }
983 }
984 }
985
986 void CodeCache::make_marked_nmethods_not_entrant() {
987 assert_locked_or_safepoint(CodeCache_lock);
988 NMethodIterator iter;
989 while(iter.next_alive()) {
990 nmethod* nm = iter.method();
991 if (nm->is_marked_for_deoptimization()) {
992 nm->make_not_entrant();
993 }
994 }
995 }
996
997 void CodeCache::verify() {
998 assert_locked_or_safepoint(CodeCache_lock);
999 FOR_ALL_HEAPS(heap) {
1000 (*heap)->verify();
1001 FOR_ALL_BLOBS(cb, *heap) {
1002 if (cb->is_alive()) {
1003 cb->verify();
1004 }
1005 }
1006 }
1007 }
1008
1009 // A CodeHeap is full. Print out warning and report event.
1010 void CodeCache::report_codemem_full(int code_blob_type, bool print) {
1011 // Get nmethod heap for the given CodeBlobType and build CodeCacheFull event
1012 CodeHeap* heap = get_code_heap(code_blob_type);
1013 assert(heap != NULL, "heap is null");
1014
1015 if (!heap->was_full() || print) {
1016 // Not yet reported for this heap, report
1017 heap->report_full();
1018 if (SegmentedCodeCache) {
1019 warning("%s is full. Compiler has been disabled.", CodeCache::get_code_heap_name(code_blob_type));
1020 warning("Try increasing the code heap size using -XX:%s=",
1021 (code_blob_type == CodeBlobType::MethodProfiled) ? "ProfiledCodeHeapSize" : "NonProfiledCodeHeapSize");
1022 } else {
1023 warning("CodeCache is full. Compiler has been disabled.");
1024 warning("Try increasing the code cache size using -XX:ReservedCodeCacheSize=");
1025 }
1026 ResourceMark rm;
1027 stringStream s;
1028 // Dump code cache into a buffer before locking the tty,
1029 {
1030 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1031 print_summary(&s);
1032 }
1033 ttyLocker ttyl;
1034 tty->print("%s", s.as_string());
1035 }
1036
1037 _codemem_full_count++;
1038 EventCodeCacheFull event;
1039 if (event.should_commit()) {
1040 event.set_codeBlobType((u1)code_blob_type);
1041 event.set_startAddress((u8)heap->low_boundary());
1042 event.set_commitedTopAddress((u8)heap->high());
1043 event.set_reservedTopAddress((u8)heap->high_boundary());
1044 event.set_entryCount(nof_blobs());
1045 event.set_methodCount(nof_nmethods());
1046 event.set_adaptorCount(nof_adapters());
1047 event.set_unallocatedCapacity(heap->unallocated_capacity()/K);
1048 event.set_fullCount(_codemem_full_count);
1049 event.commit();
1050 }
1051 }
1052
1053 void CodeCache::print_memory_overhead() {
1054 size_t wasted_bytes = 0;
1055 FOR_ALL_HEAPS(heap) {
1056 CodeHeap* curr_heap = *heap;
1057 for (CodeBlob* cb = (CodeBlob*)curr_heap->first(); cb != NULL; cb = (CodeBlob*)curr_heap->next(cb)) {
1058 HeapBlock* heap_block = ((HeapBlock*)cb) - 1;
1059 wasted_bytes += heap_block->length() * CodeCacheSegmentSize - cb->size();
1060 }
1061 }
1062 // Print bytes that are allocated in the freelist
1063 ttyLocker ttl;
1064 tty->print_cr("Number of elements in freelist: " SSIZE_FORMAT, freelists_length());
1065 tty->print_cr("Allocated in freelist: " SSIZE_FORMAT "kB", bytes_allocated_in_freelists()/K);
1066 tty->print_cr("Unused bytes in CodeBlobs: " SSIZE_FORMAT "kB", (wasted_bytes/K));
1067 tty->print_cr("Segment map size: " SSIZE_FORMAT "kB", allocated_segments()/K); // 1 byte per segment
1068 }
1069
1070 //------------------------------------------------------------------------------------------------
1071 // Non-product version
1072
1073 #ifndef PRODUCT
1074
1075 void CodeCache::print_trace(const char* event, CodeBlob* cb, int size) {
1076 if (PrintCodeCache2) { // Need to add a new flag
1077 ResourceMark rm;
1078 if (size == 0) size = cb->size();
1079 tty->print_cr("CodeCache %s: addr: " INTPTR_FORMAT ", size: 0x%x", event, p2i(cb), size);
1080 }
1081 }
1082
1083 void CodeCache::print_internals() {
1084 int nmethodCount = 0;
1085 int runtimeStubCount = 0;
1086 int adapterCount = 0;
1087 int deoptimizationStubCount = 0;
1088 int uncommonTrapStubCount = 0;
1089 int bufferBlobCount = 0;
1090 int total = 0;
1091 int nmethodAlive = 0;
1092 int nmethodNotEntrant = 0;
1093 int nmethodZombie = 0;
1094 int nmethodUnloaded = 0;
1095 int nmethodJava = 0;
1096 int nmethodNative = 0;
1097 int max_nm_size = 0;
1098 ResourceMark rm;
1099
1100 int i = 0;
1101 FOR_ALL_HEAPS(heap) {
1102 if (SegmentedCodeCache && Verbose) {
1103 tty->print_cr("-- %s --", (*heap)->name());
1104 }
1105 FOR_ALL_BLOBS(cb, *heap) {
1106 total++;
1107 if (cb->is_nmethod()) {
1108 nmethod* nm = (nmethod*)cb;
1109
1110 if (Verbose && nm->method() != NULL) {
1111 ResourceMark rm;
1112 char *method_name = nm->method()->name_and_sig_as_C_string();
1113 tty->print("%s", method_name);
1114 if(nm->is_alive()) { tty->print_cr(" alive"); }
1115 if(nm->is_not_entrant()) { tty->print_cr(" not-entrant"); }
1116 if(nm->is_zombie()) { tty->print_cr(" zombie"); }
1117 }
1118
1119 nmethodCount++;
1120
1121 if(nm->is_alive()) { nmethodAlive++; }
1122 if(nm->is_not_entrant()) { nmethodNotEntrant++; }
1123 if(nm->is_zombie()) { nmethodZombie++; }
1124 if(nm->is_unloaded()) { nmethodUnloaded++; }
1125 if(nm->method() != NULL && nm->is_native_method()) { nmethodNative++; }
1126
1127 if(nm->method() != NULL && nm->is_java_method()) {
1128 nmethodJava++;
1129 max_nm_size = MAX2(max_nm_size, nm->size());
1130 }
1131 } else if (cb->is_runtime_stub()) {
1132 runtimeStubCount++;
1133 } else if (cb->is_deoptimization_stub()) {
1134 deoptimizationStubCount++;
1135 } else if (cb->is_uncommon_trap_stub()) {
1136 uncommonTrapStubCount++;
1137 } else if (cb->is_adapter_blob()) {
1138 adapterCount++;
1139 } else if (cb->is_buffer_blob()) {
1140 bufferBlobCount++;
1141 }
1142 }
1143 }
1144
1145 int bucketSize = 512;
1146 int bucketLimit = max_nm_size / bucketSize + 1;
1147 int *buckets = NEW_C_HEAP_ARRAY(int, bucketLimit, mtCode);
1148 memset(buckets, 0, sizeof(int) * bucketLimit);
1149
1150 NMethodIterator iter;
1151 while(iter.next()) {
1152 nmethod* nm = iter.method();
1153 if(nm->method() != NULL && nm->is_java_method()) {
1154 buckets[nm->size() / bucketSize]++;
1155 }
1156 }
1157
1158 tty->print_cr("Code Cache Entries (total of %d)",total);
1159 tty->print_cr("-------------------------------------------------");
1160 tty->print_cr("nmethods: %d",nmethodCount);
1161 tty->print_cr("\talive: %d",nmethodAlive);
1162 tty->print_cr("\tnot_entrant: %d",nmethodNotEntrant);
1163 tty->print_cr("\tzombie: %d",nmethodZombie);
1164 tty->print_cr("\tunloaded: %d",nmethodUnloaded);
1165 tty->print_cr("\tjava: %d",nmethodJava);
1166 tty->print_cr("\tnative: %d",nmethodNative);
1167 tty->print_cr("runtime_stubs: %d",runtimeStubCount);
1168 tty->print_cr("adapters: %d",adapterCount);
1169 tty->print_cr("buffer blobs: %d",bufferBlobCount);
1170 tty->print_cr("deoptimization_stubs: %d",deoptimizationStubCount);
1171 tty->print_cr("uncommon_traps: %d",uncommonTrapStubCount);
1172 tty->print_cr("\nnmethod size distribution (non-zombie java)");
1173 tty->print_cr("-------------------------------------------------");
1174
1175 for(int i=0; i<bucketLimit; i++) {
1176 if(buckets[i] != 0) {
1177 tty->print("%d - %d bytes",i*bucketSize,(i+1)*bucketSize);
1178 tty->fill_to(40);
1179 tty->print_cr("%d",buckets[i]);
1180 }
1181 }
1182
1183 FREE_C_HEAP_ARRAY(int, buckets, mtCode);
1184 print_memory_overhead();
1185 }
1186
1187 #endif // !PRODUCT
1188
1189 void CodeCache::print() {
1190 print_summary(tty);
1191
1192 #ifndef PRODUCT
1193 if (!Verbose) return;
1194
1195 CodeBlob_sizes live;
1196 CodeBlob_sizes dead;
1197
1198 FOR_ALL_HEAPS(heap) {
1199 FOR_ALL_BLOBS(cb, *heap) {
1200 if (!cb->is_alive()) {
1201 dead.add(cb);
1202 } else {
1203 live.add(cb);
1204 }
1205 }
1206 }
1207
1208 tty->print_cr("CodeCache:");
1209 tty->print_cr("nmethod dependency checking time %fs", dependentCheckTime.seconds());
1210
1211 if (!live.is_empty()) {
1212 live.print("live");
1213 }
1214 if (!dead.is_empty()) {
1215 dead.print("dead");
1216 }
1217
1218 if (WizardMode) {
1219 // print the oop_map usage
1220 int code_size = 0;
1221 int number_of_blobs = 0;
1222 int number_of_oop_maps = 0;
1223 int map_size = 0;
1224 FOR_ALL_HEAPS(heap) {
1225 FOR_ALL_BLOBS(cb, *heap) {
1226 if (cb->is_alive()) {
1227 number_of_blobs++;
1228 code_size += cb->code_size();
1229 OopMapSet* set = cb->oop_maps();
1230 if (set != NULL) {
1231 number_of_oop_maps += set->size();
1232 map_size += set->heap_size();
1233 }
1234 }
1235 }
1236 }
1237 tty->print_cr("OopMaps");
1238 tty->print_cr(" #blobs = %d", number_of_blobs);
1239 tty->print_cr(" code size = %d", code_size);
1240 tty->print_cr(" #oop_maps = %d", number_of_oop_maps);
1241 tty->print_cr(" map size = %d", map_size);
1242 }
1243
1244 #endif // !PRODUCT
1245 }
1246
1247 void CodeCache::print_summary(outputStream* st, bool detailed) {
1248 FOR_ALL_HEAPS(heap_iterator) {
1249 CodeHeap* heap = (*heap_iterator);
1250 size_t total = (heap->high_boundary() - heap->low_boundary());
1251 if (SegmentedCodeCache) {
1252 st->print("%s:", heap->name());
1253 } else {
1254 st->print("CodeCache:");
1255 }
1256 st->print_cr(" size=" SIZE_FORMAT "Kb used=" SIZE_FORMAT
1257 "Kb max_used=" SIZE_FORMAT "Kb free=" SIZE_FORMAT "Kb",
1258 total/K, (total - heap->unallocated_capacity())/K,
1259 heap->max_allocated_capacity()/K, heap->unallocated_capacity()/K);
1260
1261 if (detailed) {
1262 st->print_cr(" bounds [" INTPTR_FORMAT ", " INTPTR_FORMAT ", " INTPTR_FORMAT "]",
1263 p2i(heap->low_boundary()),
1264 p2i(heap->high()),
1265 p2i(heap->high_boundary()));
1266 }
1267 }
1268
1269 if (detailed) {
1270 st->print_cr(" total_blobs=" UINT32_FORMAT " nmethods=" UINT32_FORMAT
1271 " adapters=" UINT32_FORMAT,
1272 nof_blobs(), nof_nmethods(), nof_adapters());
1273 st->print_cr(" compilation: %s", CompileBroker::should_compile_new_jobs() ?
1274 "enabled" : Arguments::mode() == Arguments::_int ?
1275 "disabled (interpreter mode)" :
1276 "disabled (not enough contiguous free space left)");
1277 }
1278 }
1279
1280 void CodeCache::print_codelist(outputStream* st) {
1281 assert_locked_or_safepoint(CodeCache_lock);
1282
1283 NMethodIterator iter;
1284 while(iter.next_alive()) {
1285 nmethod* nm = iter.method();
1286 ResourceMark rm;
1287 char *method_name = nm->method()->name_and_sig_as_C_string();
1288 st->print_cr("%d %d %s ["INTPTR_FORMAT", "INTPTR_FORMAT" - "INTPTR_FORMAT"]",
1289 nm->compile_id(), nm->comp_level(), method_name, (intptr_t)nm->header_begin(),
1290 (intptr_t)nm->code_begin(), (intptr_t)nm->code_end());
1291 }
1292 }
1293
1294 void CodeCache::print_layout(outputStream* st) {
1295 assert_locked_or_safepoint(CodeCache_lock);
1296 ResourceMark rm;
1297
1298 print_summary(st, true);
1299 }
1300
1301 void CodeCache::log_state(outputStream* st) {
1302 st->print(" total_blobs='" UINT32_FORMAT "' nmethods='" UINT32_FORMAT "'"
1303 " adapters='" UINT32_FORMAT "' free_code_cache='" SIZE_FORMAT "'",
1304 nof_blobs(), nof_nmethods(), nof_adapters(),
1305 unallocated_capacity());
1306 }