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