Mercurial > hg > graal-jvmci-8
annotate src/share/vm/gc_interface/collectedHeap.inline.hpp @ 2100:b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
Summary: Track allocated bytes in Thread's, update on TLAB retirement and direct allocation in Eden and tenured, add JNI methods for ThreadMXBean.
Reviewed-by: coleenp, kvn, dholmes, ysr
| author | phh |
|---|---|
| date | Fri, 07 Jan 2011 10:42:32 -0500 |
| parents | f95d63e2154a |
| children | c9ca3f51cf41 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2001, 2011, 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 #ifndef SHARE_VM_GC_INTERFACE_COLLECTEDHEAP_INLINE_HPP |
| 26 #define SHARE_VM_GC_INTERFACE_COLLECTEDHEAP_INLINE_HPP | |
| 27 | |
| 28 #include "gc_interface/collectedHeap.hpp" | |
| 29 #include "memory/threadLocalAllocBuffer.inline.hpp" | |
| 30 #include "memory/universe.hpp" | |
| 31 #include "oops/arrayOop.hpp" | |
| 32 #include "prims/jvmtiExport.hpp" | |
| 33 #include "runtime/sharedRuntime.hpp" | |
| 34 #include "runtime/thread.hpp" | |
| 35 #include "services/lowMemoryDetector.hpp" | |
| 36 #include "utilities/copy.hpp" | |
| 37 #ifdef TARGET_OS_FAMILY_linux | |
| 38 # include "thread_linux.inline.hpp" | |
| 39 #endif | |
| 40 #ifdef TARGET_OS_FAMILY_solaris | |
| 41 # include "thread_solaris.inline.hpp" | |
| 42 #endif | |
| 43 #ifdef TARGET_OS_FAMILY_windows | |
| 44 # include "thread_windows.inline.hpp" | |
| 45 #endif | |
| 46 | |
| 0 | 47 // Inline allocation implementations. |
| 48 | |
| 49 void CollectedHeap::post_allocation_setup_common(KlassHandle klass, | |
| 50 HeapWord* obj, | |
| 51 size_t size) { | |
| 52 post_allocation_setup_no_klass_install(klass, obj, size); | |
| 53 post_allocation_install_obj_klass(klass, oop(obj), (int) size); | |
| 54 } | |
| 55 | |
| 56 void CollectedHeap::post_allocation_setup_no_klass_install(KlassHandle klass, | |
| 57 HeapWord* objPtr, | |
| 58 size_t size) { | |
| 59 oop obj = (oop)objPtr; | |
| 60 | |
| 61 assert(obj != NULL, "NULL object pointer"); | |
| 62 if (UseBiasedLocking && (klass() != NULL)) { | |
| 63 obj->set_mark(klass->prototype_header()); | |
| 64 } else { | |
| 65 // May be bootstrapping | |
| 66 obj->set_mark(markOopDesc::prototype()); | |
| 67 } | |
| 68 } | |
| 69 | |
| 70 void CollectedHeap::post_allocation_install_obj_klass(KlassHandle klass, | |
| 71 oop obj, | |
| 72 int size) { | |
| 73 // These asserts are kind of complicated because of klassKlass | |
| 74 // and the beginning of the world. | |
| 75 assert(klass() != NULL || !Universe::is_fully_initialized(), "NULL klass"); | |
| 76 assert(klass() == NULL || klass()->is_klass(), "not a klass"); | |
| 77 assert(klass() == NULL || klass()->klass_part() != NULL, "not a klass"); | |
| 78 assert(obj != NULL, "NULL object pointer"); | |
| 79 obj->set_klass(klass()); | |
| 80 assert(!Universe::is_fully_initialized() || obj->blueprint() != NULL, | |
| 81 "missing blueprint"); | |
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82 } |
| 0 | 83 |
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84 // Support for jvmti and dtrace |
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85 inline void post_allocation_notify(KlassHandle klass, oop obj) { |
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86 // support low memory notifications (no-op if not enabled) |
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87 LowMemoryDetector::detect_low_memory_for_collected_pools(); |
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88 |
| 0 | 89 // support for JVMTI VMObjectAlloc event (no-op if not enabled) |
| 90 JvmtiExport::vm_object_alloc_event_collector(obj); | |
| 91 | |
| 92 if (DTraceAllocProbes) { | |
| 93 // support for Dtrace object alloc event (no-op most of the time) | |
| 94 if (klass() != NULL && klass()->klass_part()->name() != NULL) { | |
| 95 SharedRuntime::dtrace_object_alloc(obj); | |
| 96 } | |
| 97 } | |
| 98 } | |
| 99 | |
| 100 void CollectedHeap::post_allocation_setup_obj(KlassHandle klass, | |
| 101 HeapWord* obj, | |
| 102 size_t size) { | |
| 103 post_allocation_setup_common(klass, obj, size); | |
| 104 assert(Universe::is_bootstrapping() || | |
| 105 !((oop)obj)->blueprint()->oop_is_array(), "must not be an array"); | |
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106 // notify jvmti and dtrace |
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107 post_allocation_notify(klass, (oop)obj); |
| 0 | 108 } |
| 109 | |
| 110 void CollectedHeap::post_allocation_setup_array(KlassHandle klass, | |
| 111 HeapWord* obj, | |
| 112 size_t size, | |
| 113 int length) { | |
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114 // Set array length before setting the _klass field |
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115 // in post_allocation_setup_common() because the klass field |
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116 // indicates that the object is parsable by concurrent GC. |
| 0 | 117 assert(length >= 0, "length should be non-negative"); |
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118 ((arrayOop)obj)->set_length(length); |
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119 post_allocation_setup_common(klass, obj, size); |
| 0 | 120 assert(((oop)obj)->blueprint()->oop_is_array(), "must be an array"); |
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121 // notify jvmti and dtrace (must be after length is set for dtrace) |
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122 post_allocation_notify(klass, (oop)obj); |
| 0 | 123 } |
| 124 | |
| 125 HeapWord* CollectedHeap::common_mem_allocate_noinit(size_t size, bool is_noref, TRAPS) { | |
| 126 | |
| 127 // Clear unhandled oops for memory allocation. Memory allocation might | |
| 128 // not take out a lock if from tlab, so clear here. | |
| 129 CHECK_UNHANDLED_OOPS_ONLY(THREAD->clear_unhandled_oops();) | |
| 130 | |
| 131 if (HAS_PENDING_EXCEPTION) { | |
| 132 NOT_PRODUCT(guarantee(false, "Should not allocate with exception pending")); | |
| 133 return NULL; // caller does a CHECK_0 too | |
| 134 } | |
| 135 | |
| 136 // We may want to update this, is_noref objects might not be allocated in TLABs. | |
| 137 HeapWord* result = NULL; | |
| 138 if (UseTLAB) { | |
| 139 result = CollectedHeap::allocate_from_tlab(THREAD, size); | |
| 140 if (result != NULL) { | |
| 141 assert(!HAS_PENDING_EXCEPTION, | |
| 142 "Unexpected exception, will result in uninitialized storage"); | |
| 143 return result; | |
| 144 } | |
| 145 } | |
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146 bool gc_overhead_limit_was_exceeded = false; |
| 0 | 147 result = Universe::heap()->mem_allocate(size, |
| 148 is_noref, | |
| 149 false, | |
| 150 &gc_overhead_limit_was_exceeded); | |
| 151 if (result != NULL) { | |
| 152 NOT_PRODUCT(Universe::heap()-> | |
| 153 check_for_non_bad_heap_word_value(result, size)); | |
| 154 assert(!HAS_PENDING_EXCEPTION, | |
| 155 "Unexpected exception, will result in uninitialized storage"); | |
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156 THREAD->incr_allocated_bytes(size * HeapWordSize); |
| 0 | 157 return result; |
| 158 } | |
| 159 | |
| 160 | |
| 161 if (!gc_overhead_limit_was_exceeded) { | |
| 162 // -XX:+HeapDumpOnOutOfMemoryError and -XX:OnOutOfMemoryError support | |
| 163 report_java_out_of_memory("Java heap space"); | |
| 164 | |
| 165 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 166 JvmtiExport::post_resource_exhausted( | |
| 167 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_JAVA_HEAP, | |
| 168 "Java heap space"); | |
| 169 } | |
| 170 | |
| 171 THROW_OOP_0(Universe::out_of_memory_error_java_heap()); | |
| 172 } else { | |
| 173 // -XX:+HeapDumpOnOutOfMemoryError and -XX:OnOutOfMemoryError support | |
| 174 report_java_out_of_memory("GC overhead limit exceeded"); | |
| 175 | |
| 176 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 177 JvmtiExport::post_resource_exhausted( | |
| 178 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_JAVA_HEAP, | |
| 179 "GC overhead limit exceeded"); | |
| 180 } | |
| 181 | |
| 182 THROW_OOP_0(Universe::out_of_memory_error_gc_overhead_limit()); | |
| 183 } | |
| 184 } | |
| 185 | |
| 186 HeapWord* CollectedHeap::common_mem_allocate_init(size_t size, bool is_noref, TRAPS) { | |
| 187 HeapWord* obj = common_mem_allocate_noinit(size, is_noref, CHECK_NULL); | |
| 188 init_obj(obj, size); | |
| 189 return obj; | |
| 190 } | |
| 191 | |
| 192 // Need to investigate, do we really want to throw OOM exception here? | |
| 193 HeapWord* CollectedHeap::common_permanent_mem_allocate_noinit(size_t size, TRAPS) { | |
| 194 if (HAS_PENDING_EXCEPTION) { | |
| 195 NOT_PRODUCT(guarantee(false, "Should not allocate with exception pending")); | |
| 196 return NULL; // caller does a CHECK_NULL too | |
| 197 } | |
| 198 | |
| 199 #ifdef ASSERT | |
| 200 if (CIFireOOMAt > 0 && THREAD->is_Compiler_thread() && | |
| 201 ++_fire_out_of_memory_count >= CIFireOOMAt) { | |
| 202 // For testing of OOM handling in the CI throw an OOM and see how | |
| 203 // it does. Historically improper handling of these has resulted | |
| 204 // in crashes which we really don't want to have in the CI. | |
| 205 THROW_OOP_0(Universe::out_of_memory_error_perm_gen()); | |
| 206 } | |
| 207 #endif | |
| 208 | |
| 209 HeapWord* result = Universe::heap()->permanent_mem_allocate(size); | |
| 210 if (result != NULL) { | |
| 211 NOT_PRODUCT(Universe::heap()-> | |
| 212 check_for_non_bad_heap_word_value(result, size)); | |
| 213 assert(!HAS_PENDING_EXCEPTION, | |
| 214 "Unexpected exception, will result in uninitialized storage"); | |
| 215 return result; | |
| 216 } | |
| 217 // -XX:+HeapDumpOnOutOfMemoryError and -XX:OnOutOfMemoryError support | |
| 218 report_java_out_of_memory("PermGen space"); | |
| 219 | |
| 220 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 221 JvmtiExport::post_resource_exhausted( | |
| 222 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR, | |
| 223 "PermGen space"); | |
| 224 } | |
| 225 | |
| 226 THROW_OOP_0(Universe::out_of_memory_error_perm_gen()); | |
| 227 } | |
| 228 | |
| 229 HeapWord* CollectedHeap::common_permanent_mem_allocate_init(size_t size, TRAPS) { | |
| 230 HeapWord* obj = common_permanent_mem_allocate_noinit(size, CHECK_NULL); | |
| 231 init_obj(obj, size); | |
| 232 return obj; | |
| 233 } | |
| 234 | |
| 235 HeapWord* CollectedHeap::allocate_from_tlab(Thread* thread, size_t size) { | |
| 236 assert(UseTLAB, "should use UseTLAB"); | |
| 237 | |
| 238 HeapWord* obj = thread->tlab().allocate(size); | |
| 239 if (obj != NULL) { | |
| 240 return obj; | |
| 241 } | |
| 242 // Otherwise... | |
| 243 return allocate_from_tlab_slow(thread, size); | |
| 244 } | |
| 245 | |
| 246 void CollectedHeap::init_obj(HeapWord* obj, size_t size) { | |
| 247 assert(obj != NULL, "cannot initialize NULL object"); | |
| 248 const size_t hs = oopDesc::header_size(); | |
| 249 assert(size >= hs, "unexpected object size"); | |
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250 ((oop)obj)->set_klass_gap(0); |
| 0 | 251 Copy::fill_to_aligned_words(obj + hs, size - hs); |
| 252 } | |
| 253 | |
| 254 oop CollectedHeap::obj_allocate(KlassHandle klass, int size, TRAPS) { | |
| 255 debug_only(check_for_valid_allocation_state()); | |
| 256 assert(!Universe::heap()->is_gc_active(), "Allocation during gc not allowed"); | |
| 257 assert(size >= 0, "int won't convert to size_t"); | |
| 258 HeapWord* obj = common_mem_allocate_init(size, false, CHECK_NULL); | |
| 259 post_allocation_setup_obj(klass, obj, size); | |
| 260 NOT_PRODUCT(Universe::heap()->check_for_bad_heap_word_value(obj, size)); | |
| 261 return (oop)obj; | |
| 262 } | |
| 263 | |
| 264 oop CollectedHeap::array_allocate(KlassHandle klass, | |
| 265 int size, | |
| 266 int length, | |
| 267 TRAPS) { | |
| 268 debug_only(check_for_valid_allocation_state()); | |
| 269 assert(!Universe::heap()->is_gc_active(), "Allocation during gc not allowed"); | |
| 270 assert(size >= 0, "int won't convert to size_t"); | |
| 271 HeapWord* obj = common_mem_allocate_init(size, false, CHECK_NULL); | |
| 272 post_allocation_setup_array(klass, obj, size, length); | |
| 273 NOT_PRODUCT(Universe::heap()->check_for_bad_heap_word_value(obj, size)); | |
| 274 return (oop)obj; | |
| 275 } | |
| 276 | |
| 277 oop CollectedHeap::large_typearray_allocate(KlassHandle klass, | |
| 278 int size, | |
| 279 int length, | |
| 280 TRAPS) { | |
| 281 debug_only(check_for_valid_allocation_state()); | |
| 282 assert(!Universe::heap()->is_gc_active(), "Allocation during gc not allowed"); | |
| 283 assert(size >= 0, "int won't convert to size_t"); | |
| 284 HeapWord* obj = common_mem_allocate_init(size, true, CHECK_NULL); | |
| 285 post_allocation_setup_array(klass, obj, size, length); | |
| 286 NOT_PRODUCT(Universe::heap()->check_for_bad_heap_word_value(obj, size)); | |
| 287 return (oop)obj; | |
| 288 } | |
| 289 | |
| 290 oop CollectedHeap::permanent_obj_allocate(KlassHandle klass, int size, TRAPS) { | |
| 291 oop obj = permanent_obj_allocate_no_klass_install(klass, size, CHECK_NULL); | |
| 292 post_allocation_install_obj_klass(klass, obj, size); | |
| 293 NOT_PRODUCT(Universe::heap()->check_for_bad_heap_word_value((HeapWord*) obj, | |
| 294 size)); | |
| 295 return obj; | |
| 296 } | |
| 297 | |
| 298 oop CollectedHeap::permanent_obj_allocate_no_klass_install(KlassHandle klass, | |
| 299 int size, | |
| 300 TRAPS) { | |
| 301 debug_only(check_for_valid_allocation_state()); | |
| 302 assert(!Universe::heap()->is_gc_active(), "Allocation during gc not allowed"); | |
| 303 assert(size >= 0, "int won't convert to size_t"); | |
| 304 HeapWord* obj = common_permanent_mem_allocate_init(size, CHECK_NULL); | |
| 305 post_allocation_setup_no_klass_install(klass, obj, size); | |
| 306 NOT_PRODUCT(Universe::heap()->check_for_bad_heap_word_value(obj, size)); | |
| 307 return (oop)obj; | |
| 308 } | |
| 309 | |
| 310 oop CollectedHeap::permanent_array_allocate(KlassHandle klass, | |
| 311 int size, | |
| 312 int length, | |
| 313 TRAPS) { | |
| 314 debug_only(check_for_valid_allocation_state()); | |
| 315 assert(!Universe::heap()->is_gc_active(), "Allocation during gc not allowed"); | |
| 316 assert(size >= 0, "int won't convert to size_t"); | |
| 317 HeapWord* obj = common_permanent_mem_allocate_init(size, CHECK_NULL); | |
| 318 post_allocation_setup_array(klass, obj, size, length); | |
| 319 NOT_PRODUCT(Universe::heap()->check_for_bad_heap_word_value(obj, size)); | |
| 320 return (oop)obj; | |
| 321 } | |
| 322 | |
| 323 // Returns "TRUE" if "p" is a method oop in the | |
| 324 // current heap with high probability. NOTE: The main | |
| 325 // current consumers of this interface are Forte:: | |
| 326 // and ThreadProfiler::. In these cases, the | |
| 327 // interpreter frame from which "p" came, may be | |
| 328 // under construction when sampled asynchronously, so | |
| 329 // the clients want to check that it represents a | |
| 330 // valid method before using it. Nonetheless since | |
| 331 // the clients do not typically lock out GC, the | |
| 332 // predicate is_valid_method() is not stable, so | |
| 333 // it is possible that by the time "p" is used, it | |
| 334 // is no longer valid. | |
| 335 inline bool CollectedHeap::is_valid_method(oop p) const { | |
| 336 return | |
| 337 p != NULL && | |
| 338 | |
| 339 // Check whether it is aligned at a HeapWord boundary. | |
| 340 Space::is_aligned(p) && | |
| 341 | |
| 342 // Check whether "method" is in the allocated part of the | |
| 343 // permanent generation -- this needs to be checked before | |
| 344 // p->klass() below to avoid a SEGV (but see below | |
| 345 // for a potential window of vulnerability). | |
| 346 is_permanent((void*)p) && | |
| 347 | |
| 348 // See if GC is active; however, there is still an | |
| 349 // apparently unavoidable window after this call | |
| 350 // and before the client of this interface uses "p". | |
| 351 // If the client chooses not to lock out GC, then | |
| 352 // it's a risk the client must accept. | |
| 353 !is_gc_active() && | |
| 354 | |
| 355 // Check that p is a methodOop. | |
| 356 p->klass() == Universe::methodKlassObj(); | |
| 357 } | |
| 358 | |
| 359 | |
| 360 #ifndef PRODUCT | |
| 361 | |
| 362 inline bool | |
| 363 CollectedHeap::promotion_should_fail(volatile size_t* count) { | |
| 364 // Access to count is not atomic; the value does not have to be exact. | |
| 365 if (PromotionFailureALot) { | |
| 366 const size_t gc_num = total_collections(); | |
| 367 const size_t elapsed_gcs = gc_num - _promotion_failure_alot_gc_number; | |
| 368 if (elapsed_gcs >= PromotionFailureALotInterval) { | |
| 369 // Test for unsigned arithmetic wrap-around. | |
| 370 if (++*count >= PromotionFailureALotCount) { | |
| 371 *count = 0; | |
| 372 return true; | |
| 373 } | |
| 374 } | |
| 375 } | |
| 376 return false; | |
| 377 } | |
| 378 | |
| 379 inline bool CollectedHeap::promotion_should_fail() { | |
| 380 return promotion_should_fail(&_promotion_failure_alot_count); | |
| 381 } | |
| 382 | |
| 383 inline void CollectedHeap::reset_promotion_should_fail(volatile size_t* count) { | |
| 384 if (PromotionFailureALot) { | |
| 385 _promotion_failure_alot_gc_number = total_collections(); | |
| 386 *count = 0; | |
| 387 } | |
| 388 } | |
| 389 | |
| 390 inline void CollectedHeap::reset_promotion_should_fail() { | |
| 391 reset_promotion_should_fail(&_promotion_failure_alot_count); | |
| 392 } | |
| 393 #endif // #ifndef PRODUCT | |
| 1972 | 394 |
| 395 #endif // SHARE_VM_GC_INTERFACE_COLLECTEDHEAP_INLINE_HPP |