Thu, 27 May 2010 19:08:38 -0700
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
duke@435 | 1 | /* |
trims@1907 | 2 | * Copyright (c) 2001, 2008, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | inline void CMSBitMap::clear_all() { |
duke@435 | 26 | assert_locked(); |
duke@435 | 27 | // CMS bitmaps are usually cover large memory regions |
duke@435 | 28 | _bm.clear_large(); |
duke@435 | 29 | return; |
duke@435 | 30 | } |
duke@435 | 31 | |
duke@435 | 32 | inline size_t CMSBitMap::heapWordToOffset(HeapWord* addr) const { |
duke@435 | 33 | return (pointer_delta(addr, _bmStartWord)) >> _shifter; |
duke@435 | 34 | } |
duke@435 | 35 | |
duke@435 | 36 | inline HeapWord* CMSBitMap::offsetToHeapWord(size_t offset) const { |
duke@435 | 37 | return _bmStartWord + (offset << _shifter); |
duke@435 | 38 | } |
duke@435 | 39 | |
duke@435 | 40 | inline size_t CMSBitMap::heapWordDiffToOffsetDiff(size_t diff) const { |
duke@435 | 41 | assert((diff & ((1 << _shifter) - 1)) == 0, "argument check"); |
duke@435 | 42 | return diff >> _shifter; |
duke@435 | 43 | } |
duke@435 | 44 | |
duke@435 | 45 | inline void CMSBitMap::mark(HeapWord* addr) { |
duke@435 | 46 | assert_locked(); |
duke@435 | 47 | assert(_bmStartWord <= addr && addr < (_bmStartWord + _bmWordSize), |
duke@435 | 48 | "outside underlying space?"); |
duke@435 | 49 | _bm.set_bit(heapWordToOffset(addr)); |
duke@435 | 50 | } |
duke@435 | 51 | |
duke@435 | 52 | inline bool CMSBitMap::par_mark(HeapWord* addr) { |
duke@435 | 53 | assert_locked(); |
duke@435 | 54 | assert(_bmStartWord <= addr && addr < (_bmStartWord + _bmWordSize), |
duke@435 | 55 | "outside underlying space?"); |
duke@435 | 56 | return _bm.par_at_put(heapWordToOffset(addr), true); |
duke@435 | 57 | } |
duke@435 | 58 | |
duke@435 | 59 | inline void CMSBitMap::par_clear(HeapWord* addr) { |
duke@435 | 60 | assert_locked(); |
duke@435 | 61 | assert(_bmStartWord <= addr && addr < (_bmStartWord + _bmWordSize), |
duke@435 | 62 | "outside underlying space?"); |
duke@435 | 63 | _bm.par_at_put(heapWordToOffset(addr), false); |
duke@435 | 64 | } |
duke@435 | 65 | |
duke@435 | 66 | inline void CMSBitMap::mark_range(MemRegion mr) { |
duke@435 | 67 | NOT_PRODUCT(region_invariant(mr)); |
duke@435 | 68 | // Range size is usually just 1 bit. |
duke@435 | 69 | _bm.set_range(heapWordToOffset(mr.start()), heapWordToOffset(mr.end()), |
duke@435 | 70 | BitMap::small_range); |
duke@435 | 71 | } |
duke@435 | 72 | |
duke@435 | 73 | inline void CMSBitMap::clear_range(MemRegion mr) { |
duke@435 | 74 | NOT_PRODUCT(region_invariant(mr)); |
duke@435 | 75 | // Range size is usually just 1 bit. |
duke@435 | 76 | _bm.clear_range(heapWordToOffset(mr.start()), heapWordToOffset(mr.end()), |
duke@435 | 77 | BitMap::small_range); |
duke@435 | 78 | } |
duke@435 | 79 | |
duke@435 | 80 | inline void CMSBitMap::par_mark_range(MemRegion mr) { |
duke@435 | 81 | NOT_PRODUCT(region_invariant(mr)); |
duke@435 | 82 | // Range size is usually just 1 bit. |
duke@435 | 83 | _bm.par_set_range(heapWordToOffset(mr.start()), heapWordToOffset(mr.end()), |
duke@435 | 84 | BitMap::small_range); |
duke@435 | 85 | } |
duke@435 | 86 | |
duke@435 | 87 | inline void CMSBitMap::par_clear_range(MemRegion mr) { |
duke@435 | 88 | NOT_PRODUCT(region_invariant(mr)); |
duke@435 | 89 | // Range size is usually just 1 bit. |
duke@435 | 90 | _bm.par_clear_range(heapWordToOffset(mr.start()), heapWordToOffset(mr.end()), |
duke@435 | 91 | BitMap::small_range); |
duke@435 | 92 | } |
duke@435 | 93 | |
duke@435 | 94 | inline void CMSBitMap::mark_large_range(MemRegion mr) { |
duke@435 | 95 | NOT_PRODUCT(region_invariant(mr)); |
duke@435 | 96 | // Range size must be greater than 32 bytes. |
duke@435 | 97 | _bm.set_range(heapWordToOffset(mr.start()), heapWordToOffset(mr.end()), |
duke@435 | 98 | BitMap::large_range); |
duke@435 | 99 | } |
duke@435 | 100 | |
duke@435 | 101 | inline void CMSBitMap::clear_large_range(MemRegion mr) { |
duke@435 | 102 | NOT_PRODUCT(region_invariant(mr)); |
duke@435 | 103 | // Range size must be greater than 32 bytes. |
duke@435 | 104 | _bm.clear_range(heapWordToOffset(mr.start()), heapWordToOffset(mr.end()), |
duke@435 | 105 | BitMap::large_range); |
duke@435 | 106 | } |
duke@435 | 107 | |
duke@435 | 108 | inline void CMSBitMap::par_mark_large_range(MemRegion mr) { |
duke@435 | 109 | NOT_PRODUCT(region_invariant(mr)); |
duke@435 | 110 | // Range size must be greater than 32 bytes. |
duke@435 | 111 | _bm.par_set_range(heapWordToOffset(mr.start()), heapWordToOffset(mr.end()), |
duke@435 | 112 | BitMap::large_range); |
duke@435 | 113 | } |
duke@435 | 114 | |
duke@435 | 115 | inline void CMSBitMap::par_clear_large_range(MemRegion mr) { |
duke@435 | 116 | NOT_PRODUCT(region_invariant(mr)); |
duke@435 | 117 | // Range size must be greater than 32 bytes. |
duke@435 | 118 | _bm.par_clear_range(heapWordToOffset(mr.start()), heapWordToOffset(mr.end()), |
duke@435 | 119 | BitMap::large_range); |
duke@435 | 120 | } |
duke@435 | 121 | |
duke@435 | 122 | // Starting at "addr" (inclusive) return a memory region |
duke@435 | 123 | // corresponding to the first maximally contiguous marked ("1") region. |
duke@435 | 124 | inline MemRegion CMSBitMap::getAndClearMarkedRegion(HeapWord* addr) { |
duke@435 | 125 | return getAndClearMarkedRegion(addr, endWord()); |
duke@435 | 126 | } |
duke@435 | 127 | |
duke@435 | 128 | // Starting at "start_addr" (inclusive) return a memory region |
duke@435 | 129 | // corresponding to the first maximal contiguous marked ("1") region |
duke@435 | 130 | // strictly less than end_addr. |
duke@435 | 131 | inline MemRegion CMSBitMap::getAndClearMarkedRegion(HeapWord* start_addr, |
duke@435 | 132 | HeapWord* end_addr) { |
duke@435 | 133 | HeapWord *start, *end; |
duke@435 | 134 | assert_locked(); |
duke@435 | 135 | start = getNextMarkedWordAddress (start_addr, end_addr); |
duke@435 | 136 | end = getNextUnmarkedWordAddress(start, end_addr); |
duke@435 | 137 | assert(start <= end, "Consistency check"); |
duke@435 | 138 | MemRegion mr(start, end); |
duke@435 | 139 | if (!mr.is_empty()) { |
duke@435 | 140 | clear_range(mr); |
duke@435 | 141 | } |
duke@435 | 142 | return mr; |
duke@435 | 143 | } |
duke@435 | 144 | |
duke@435 | 145 | inline bool CMSBitMap::isMarked(HeapWord* addr) const { |
duke@435 | 146 | assert_locked(); |
duke@435 | 147 | assert(_bmStartWord <= addr && addr < (_bmStartWord + _bmWordSize), |
duke@435 | 148 | "outside underlying space?"); |
duke@435 | 149 | return _bm.at(heapWordToOffset(addr)); |
duke@435 | 150 | } |
duke@435 | 151 | |
duke@435 | 152 | // The same as isMarked() but without a lock check. |
duke@435 | 153 | inline bool CMSBitMap::par_isMarked(HeapWord* addr) const { |
duke@435 | 154 | assert(_bmStartWord <= addr && addr < (_bmStartWord + _bmWordSize), |
duke@435 | 155 | "outside underlying space?"); |
duke@435 | 156 | return _bm.at(heapWordToOffset(addr)); |
duke@435 | 157 | } |
duke@435 | 158 | |
duke@435 | 159 | |
duke@435 | 160 | inline bool CMSBitMap::isUnmarked(HeapWord* addr) const { |
duke@435 | 161 | assert_locked(); |
duke@435 | 162 | assert(_bmStartWord <= addr && addr < (_bmStartWord + _bmWordSize), |
duke@435 | 163 | "outside underlying space?"); |
duke@435 | 164 | return !_bm.at(heapWordToOffset(addr)); |
duke@435 | 165 | } |
duke@435 | 166 | |
duke@435 | 167 | // Return the HeapWord address corresponding to next "1" bit |
duke@435 | 168 | // (inclusive). |
duke@435 | 169 | inline HeapWord* CMSBitMap::getNextMarkedWordAddress(HeapWord* addr) const { |
duke@435 | 170 | return getNextMarkedWordAddress(addr, endWord()); |
duke@435 | 171 | } |
duke@435 | 172 | |
duke@435 | 173 | // Return the least HeapWord address corresponding to next "1" bit |
duke@435 | 174 | // starting at start_addr (inclusive) but strictly less than end_addr. |
duke@435 | 175 | inline HeapWord* CMSBitMap::getNextMarkedWordAddress( |
duke@435 | 176 | HeapWord* start_addr, HeapWord* end_addr) const { |
duke@435 | 177 | assert_locked(); |
duke@435 | 178 | size_t nextOffset = _bm.get_next_one_offset( |
duke@435 | 179 | heapWordToOffset(start_addr), |
duke@435 | 180 | heapWordToOffset(end_addr)); |
duke@435 | 181 | HeapWord* nextAddr = offsetToHeapWord(nextOffset); |
duke@435 | 182 | assert(nextAddr >= start_addr && |
duke@435 | 183 | nextAddr <= end_addr, "get_next_one postcondition"); |
duke@435 | 184 | assert((nextAddr == end_addr) || |
duke@435 | 185 | isMarked(nextAddr), "get_next_one postcondition"); |
duke@435 | 186 | return nextAddr; |
duke@435 | 187 | } |
duke@435 | 188 | |
duke@435 | 189 | |
duke@435 | 190 | // Return the HeapWord address corrsponding to the next "0" bit |
duke@435 | 191 | // (inclusive). |
duke@435 | 192 | inline HeapWord* CMSBitMap::getNextUnmarkedWordAddress(HeapWord* addr) const { |
duke@435 | 193 | return getNextUnmarkedWordAddress(addr, endWord()); |
duke@435 | 194 | } |
duke@435 | 195 | |
duke@435 | 196 | // Return the HeapWord address corrsponding to the next "0" bit |
duke@435 | 197 | // (inclusive). |
duke@435 | 198 | inline HeapWord* CMSBitMap::getNextUnmarkedWordAddress( |
duke@435 | 199 | HeapWord* start_addr, HeapWord* end_addr) const { |
duke@435 | 200 | assert_locked(); |
duke@435 | 201 | size_t nextOffset = _bm.get_next_zero_offset( |
duke@435 | 202 | heapWordToOffset(start_addr), |
duke@435 | 203 | heapWordToOffset(end_addr)); |
duke@435 | 204 | HeapWord* nextAddr = offsetToHeapWord(nextOffset); |
duke@435 | 205 | assert(nextAddr >= start_addr && |
duke@435 | 206 | nextAddr <= end_addr, "get_next_zero postcondition"); |
duke@435 | 207 | assert((nextAddr == end_addr) || |
duke@435 | 208 | isUnmarked(nextAddr), "get_next_zero postcondition"); |
duke@435 | 209 | return nextAddr; |
duke@435 | 210 | } |
duke@435 | 211 | |
duke@435 | 212 | inline bool CMSBitMap::isAllClear() const { |
duke@435 | 213 | assert_locked(); |
duke@435 | 214 | return getNextMarkedWordAddress(startWord()) >= endWord(); |
duke@435 | 215 | } |
duke@435 | 216 | |
duke@435 | 217 | inline void CMSBitMap::iterate(BitMapClosure* cl, HeapWord* left, |
duke@435 | 218 | HeapWord* right) { |
duke@435 | 219 | assert_locked(); |
duke@435 | 220 | left = MAX2(_bmStartWord, left); |
duke@435 | 221 | right = MIN2(_bmStartWord + _bmWordSize, right); |
duke@435 | 222 | if (right > left) { |
duke@435 | 223 | _bm.iterate(cl, heapWordToOffset(left), heapWordToOffset(right)); |
duke@435 | 224 | } |
duke@435 | 225 | } |
duke@435 | 226 | |
duke@435 | 227 | inline void CMSCollector::start_icms() { |
duke@435 | 228 | if (CMSIncrementalMode) { |
duke@435 | 229 | ConcurrentMarkSweepThread::start_icms(); |
duke@435 | 230 | } |
duke@435 | 231 | } |
duke@435 | 232 | |
duke@435 | 233 | inline void CMSCollector::stop_icms() { |
duke@435 | 234 | if (CMSIncrementalMode) { |
duke@435 | 235 | ConcurrentMarkSweepThread::stop_icms(); |
duke@435 | 236 | } |
duke@435 | 237 | } |
duke@435 | 238 | |
duke@435 | 239 | inline void CMSCollector::disable_icms() { |
duke@435 | 240 | if (CMSIncrementalMode) { |
duke@435 | 241 | ConcurrentMarkSweepThread::disable_icms(); |
duke@435 | 242 | } |
duke@435 | 243 | } |
duke@435 | 244 | |
duke@435 | 245 | inline void CMSCollector::enable_icms() { |
duke@435 | 246 | if (CMSIncrementalMode) { |
duke@435 | 247 | ConcurrentMarkSweepThread::enable_icms(); |
duke@435 | 248 | } |
duke@435 | 249 | } |
duke@435 | 250 | |
duke@435 | 251 | inline void CMSCollector::icms_wait() { |
duke@435 | 252 | if (CMSIncrementalMode) { |
duke@435 | 253 | cmsThread()->icms_wait(); |
duke@435 | 254 | } |
duke@435 | 255 | } |
duke@435 | 256 | |
duke@435 | 257 | inline void CMSCollector::save_sweep_limits() { |
duke@435 | 258 | _cmsGen->save_sweep_limit(); |
duke@435 | 259 | _permGen->save_sweep_limit(); |
duke@435 | 260 | } |
duke@435 | 261 | |
duke@435 | 262 | inline bool CMSCollector::is_dead_obj(oop obj) const { |
duke@435 | 263 | HeapWord* addr = (HeapWord*)obj; |
duke@435 | 264 | assert((_cmsGen->cmsSpace()->is_in_reserved(addr) |
duke@435 | 265 | && _cmsGen->cmsSpace()->block_is_obj(addr)) |
duke@435 | 266 | || |
duke@435 | 267 | (_permGen->cmsSpace()->is_in_reserved(addr) |
duke@435 | 268 | && _permGen->cmsSpace()->block_is_obj(addr)), |
duke@435 | 269 | "must be object"); |
ysr@529 | 270 | return should_unload_classes() && |
duke@435 | 271 | _collectorState == Sweeping && |
duke@435 | 272 | !_markBitMap.isMarked(addr); |
duke@435 | 273 | } |
duke@435 | 274 | |
duke@435 | 275 | inline bool CMSCollector::should_abort_preclean() const { |
duke@435 | 276 | // We are in the midst of an "abortable preclean" and either |
duke@435 | 277 | // scavenge is done or foreground GC wants to take over collection |
duke@435 | 278 | return _collectorState == AbortablePreclean && |
duke@435 | 279 | (_abort_preclean || _foregroundGCIsActive || |
duke@435 | 280 | GenCollectedHeap::heap()->incremental_collection_will_fail()); |
duke@435 | 281 | } |
duke@435 | 282 | |
duke@435 | 283 | inline size_t CMSCollector::get_eden_used() const { |
duke@435 | 284 | return _young_gen->as_DefNewGeneration()->eden()->used(); |
duke@435 | 285 | } |
duke@435 | 286 | |
duke@435 | 287 | inline size_t CMSCollector::get_eden_capacity() const { |
duke@435 | 288 | return _young_gen->as_DefNewGeneration()->eden()->capacity(); |
duke@435 | 289 | } |
duke@435 | 290 | |
duke@435 | 291 | inline bool CMSStats::valid() const { |
duke@435 | 292 | return _valid_bits == _ALL_VALID; |
duke@435 | 293 | } |
duke@435 | 294 | |
duke@435 | 295 | inline void CMSStats::record_gc0_begin() { |
duke@435 | 296 | if (_gc0_begin_time.is_updated()) { |
duke@435 | 297 | float last_gc0_period = _gc0_begin_time.seconds(); |
duke@435 | 298 | _gc0_period = AdaptiveWeightedAverage::exp_avg(_gc0_period, |
duke@435 | 299 | last_gc0_period, _gc0_alpha); |
duke@435 | 300 | _gc0_alpha = _saved_alpha; |
duke@435 | 301 | _valid_bits |= _GC0_VALID; |
duke@435 | 302 | } |
duke@435 | 303 | _cms_used_at_gc0_begin = _cms_gen->cmsSpace()->used(); |
duke@435 | 304 | |
duke@435 | 305 | _gc0_begin_time.update(); |
duke@435 | 306 | } |
duke@435 | 307 | |
duke@435 | 308 | inline void CMSStats::record_gc0_end(size_t cms_gen_bytes_used) { |
duke@435 | 309 | float last_gc0_duration = _gc0_begin_time.seconds(); |
duke@435 | 310 | _gc0_duration = AdaptiveWeightedAverage::exp_avg(_gc0_duration, |
duke@435 | 311 | last_gc0_duration, _gc0_alpha); |
duke@435 | 312 | |
duke@435 | 313 | // Amount promoted. |
duke@435 | 314 | _cms_used_at_gc0_end = cms_gen_bytes_used; |
duke@435 | 315 | |
duke@435 | 316 | size_t promoted_bytes = 0; |
duke@435 | 317 | if (_cms_used_at_gc0_end >= _cms_used_at_gc0_begin) { |
duke@435 | 318 | promoted_bytes = _cms_used_at_gc0_end - _cms_used_at_gc0_begin; |
duke@435 | 319 | } |
duke@435 | 320 | |
duke@435 | 321 | // If the younger gen collections were skipped, then the |
duke@435 | 322 | // number of promoted bytes will be 0 and adding it to the |
duke@435 | 323 | // average will incorrectly lessen the average. It is, however, |
duke@435 | 324 | // also possible that no promotion was needed. |
duke@435 | 325 | // |
duke@435 | 326 | // _gc0_promoted used to be calculated as |
duke@435 | 327 | // _gc0_promoted = AdaptiveWeightedAverage::exp_avg(_gc0_promoted, |
duke@435 | 328 | // promoted_bytes, _gc0_alpha); |
duke@435 | 329 | _cms_gen->gc_stats()->avg_promoted()->sample(promoted_bytes); |
duke@435 | 330 | _gc0_promoted = (size_t) _cms_gen->gc_stats()->avg_promoted()->average(); |
duke@435 | 331 | |
duke@435 | 332 | // Amount directly allocated. |
duke@435 | 333 | size_t allocated_bytes = _cms_gen->direct_allocated_words() * HeapWordSize; |
duke@435 | 334 | _cms_gen->reset_direct_allocated_words(); |
duke@435 | 335 | _cms_allocated = AdaptiveWeightedAverage::exp_avg(_cms_allocated, |
duke@435 | 336 | allocated_bytes, _gc0_alpha); |
duke@435 | 337 | } |
duke@435 | 338 | |
duke@435 | 339 | inline void CMSStats::record_cms_begin() { |
duke@435 | 340 | _cms_timer.stop(); |
duke@435 | 341 | |
duke@435 | 342 | // This is just an approximate value, but is good enough. |
duke@435 | 343 | _cms_used_at_cms_begin = _cms_used_at_gc0_end; |
duke@435 | 344 | |
duke@435 | 345 | _cms_period = AdaptiveWeightedAverage::exp_avg((float)_cms_period, |
duke@435 | 346 | (float) _cms_timer.seconds(), _cms_alpha); |
duke@435 | 347 | _cms_begin_time.update(); |
duke@435 | 348 | |
duke@435 | 349 | _cms_timer.reset(); |
duke@435 | 350 | _cms_timer.start(); |
duke@435 | 351 | } |
duke@435 | 352 | |
duke@435 | 353 | inline void CMSStats::record_cms_end() { |
duke@435 | 354 | _cms_timer.stop(); |
duke@435 | 355 | |
duke@435 | 356 | float cur_duration = _cms_timer.seconds(); |
duke@435 | 357 | _cms_duration = AdaptiveWeightedAverage::exp_avg(_cms_duration, |
duke@435 | 358 | cur_duration, _cms_alpha); |
duke@435 | 359 | |
duke@435 | 360 | // Avoid division by 0. |
duke@435 | 361 | const size_t cms_used_mb = MAX2(_cms_used_at_cms_begin / M, (size_t)1); |
duke@435 | 362 | _cms_duration_per_mb = AdaptiveWeightedAverage::exp_avg(_cms_duration_per_mb, |
duke@435 | 363 | cur_duration / cms_used_mb, |
duke@435 | 364 | _cms_alpha); |
duke@435 | 365 | |
duke@435 | 366 | _cms_end_time.update(); |
duke@435 | 367 | _cms_alpha = _saved_alpha; |
duke@435 | 368 | _allow_duty_cycle_reduction = true; |
duke@435 | 369 | _valid_bits |= _CMS_VALID; |
duke@435 | 370 | |
duke@435 | 371 | _cms_timer.start(); |
duke@435 | 372 | } |
duke@435 | 373 | |
duke@435 | 374 | inline double CMSStats::cms_time_since_begin() const { |
duke@435 | 375 | return _cms_begin_time.seconds(); |
duke@435 | 376 | } |
duke@435 | 377 | |
duke@435 | 378 | inline double CMSStats::cms_time_since_end() const { |
duke@435 | 379 | return _cms_end_time.seconds(); |
duke@435 | 380 | } |
duke@435 | 381 | |
duke@435 | 382 | inline double CMSStats::promotion_rate() const { |
duke@435 | 383 | assert(valid(), "statistics not valid yet"); |
duke@435 | 384 | return gc0_promoted() / gc0_period(); |
duke@435 | 385 | } |
duke@435 | 386 | |
duke@435 | 387 | inline double CMSStats::cms_allocation_rate() const { |
duke@435 | 388 | assert(valid(), "statistics not valid yet"); |
duke@435 | 389 | return cms_allocated() / gc0_period(); |
duke@435 | 390 | } |
duke@435 | 391 | |
duke@435 | 392 | inline double CMSStats::cms_consumption_rate() const { |
duke@435 | 393 | assert(valid(), "statistics not valid yet"); |
duke@435 | 394 | return (gc0_promoted() + cms_allocated()) / gc0_period(); |
duke@435 | 395 | } |
duke@435 | 396 | |
duke@435 | 397 | inline unsigned int CMSStats::icms_update_duty_cycle() { |
duke@435 | 398 | // Update the duty cycle only if pacing is enabled and the stats are valid |
duke@435 | 399 | // (after at least one young gen gc and one cms cycle have completed). |
duke@435 | 400 | if (CMSIncrementalPacing && valid()) { |
duke@435 | 401 | return icms_update_duty_cycle_impl(); |
duke@435 | 402 | } |
duke@435 | 403 | return _icms_duty_cycle; |
duke@435 | 404 | } |
duke@435 | 405 | |
duke@435 | 406 | inline void ConcurrentMarkSweepGeneration::save_sweep_limit() { |
duke@435 | 407 | cmsSpace()->save_sweep_limit(); |
duke@435 | 408 | } |
duke@435 | 409 | |
duke@435 | 410 | inline size_t ConcurrentMarkSweepGeneration::capacity() const { |
duke@435 | 411 | return _cmsSpace->capacity(); |
duke@435 | 412 | } |
duke@435 | 413 | |
duke@435 | 414 | inline size_t ConcurrentMarkSweepGeneration::used() const { |
duke@435 | 415 | return _cmsSpace->used(); |
duke@435 | 416 | } |
duke@435 | 417 | |
duke@435 | 418 | inline size_t ConcurrentMarkSweepGeneration::free() const { |
duke@435 | 419 | return _cmsSpace->free(); |
duke@435 | 420 | } |
duke@435 | 421 | |
duke@435 | 422 | inline MemRegion ConcurrentMarkSweepGeneration::used_region() const { |
duke@435 | 423 | return _cmsSpace->used_region(); |
duke@435 | 424 | } |
duke@435 | 425 | |
duke@435 | 426 | inline MemRegion ConcurrentMarkSweepGeneration::used_region_at_save_marks() const { |
duke@435 | 427 | return _cmsSpace->used_region_at_save_marks(); |
duke@435 | 428 | } |
duke@435 | 429 | |
duke@435 | 430 | inline void MarkFromRootsClosure::do_yield_check() { |
duke@435 | 431 | if (ConcurrentMarkSweepThread::should_yield() && |
duke@435 | 432 | !_collector->foregroundGCIsActive() && |
duke@435 | 433 | _yield) { |
duke@435 | 434 | do_yield_work(); |
duke@435 | 435 | } |
duke@435 | 436 | } |
duke@435 | 437 | |
duke@435 | 438 | inline void Par_MarkFromRootsClosure::do_yield_check() { |
duke@435 | 439 | if (ConcurrentMarkSweepThread::should_yield() && |
duke@435 | 440 | !_collector->foregroundGCIsActive() && |
duke@435 | 441 | _yield) { |
duke@435 | 442 | do_yield_work(); |
duke@435 | 443 | } |
duke@435 | 444 | } |
duke@435 | 445 | |
duke@435 | 446 | // Return value of "true" indicates that the on-going preclean |
duke@435 | 447 | // should be aborted. |
duke@435 | 448 | inline bool ScanMarkedObjectsAgainCarefullyClosure::do_yield_check() { |
duke@435 | 449 | if (ConcurrentMarkSweepThread::should_yield() && |
duke@435 | 450 | !_collector->foregroundGCIsActive() && |
duke@435 | 451 | _yield) { |
duke@435 | 452 | // Sample young gen size before and after yield |
duke@435 | 453 | _collector->sample_eden(); |
duke@435 | 454 | do_yield_work(); |
duke@435 | 455 | _collector->sample_eden(); |
duke@435 | 456 | return _collector->should_abort_preclean(); |
duke@435 | 457 | } |
duke@435 | 458 | return false; |
duke@435 | 459 | } |
duke@435 | 460 | |
duke@435 | 461 | inline void SurvivorSpacePrecleanClosure::do_yield_check() { |
duke@435 | 462 | if (ConcurrentMarkSweepThread::should_yield() && |
duke@435 | 463 | !_collector->foregroundGCIsActive() && |
duke@435 | 464 | _yield) { |
duke@435 | 465 | // Sample young gen size before and after yield |
duke@435 | 466 | _collector->sample_eden(); |
duke@435 | 467 | do_yield_work(); |
duke@435 | 468 | _collector->sample_eden(); |
duke@435 | 469 | } |
duke@435 | 470 | } |
duke@435 | 471 | |
duke@435 | 472 | inline void SweepClosure::do_yield_check(HeapWord* addr) { |
duke@435 | 473 | if (ConcurrentMarkSweepThread::should_yield() && |
duke@435 | 474 | !_collector->foregroundGCIsActive() && |
duke@435 | 475 | _yield) { |
duke@435 | 476 | do_yield_work(addr); |
duke@435 | 477 | } |
duke@435 | 478 | } |
duke@435 | 479 | |
duke@435 | 480 | inline void MarkRefsIntoAndScanClosure::do_yield_check() { |
duke@435 | 481 | // The conditions are ordered for the remarking phase |
duke@435 | 482 | // when _yield is false. |
duke@435 | 483 | if (_yield && |
duke@435 | 484 | !_collector->foregroundGCIsActive() && |
duke@435 | 485 | ConcurrentMarkSweepThread::should_yield()) { |
duke@435 | 486 | do_yield_work(); |
duke@435 | 487 | } |
duke@435 | 488 | } |
duke@435 | 489 | |
duke@435 | 490 | |
duke@435 | 491 | inline void ModUnionClosure::do_MemRegion(MemRegion mr) { |
duke@435 | 492 | // Align the end of mr so it's at a card boundary. |
duke@435 | 493 | // This is superfluous except at the end of the space; |
duke@435 | 494 | // we should do better than this XXX |
duke@435 | 495 | MemRegion mr2(mr.start(), (HeapWord*)round_to((intptr_t)mr.end(), |
duke@435 | 496 | CardTableModRefBS::card_size /* bytes */)); |
duke@435 | 497 | _t->mark_range(mr2); |
duke@435 | 498 | } |
duke@435 | 499 | |
duke@435 | 500 | inline void ModUnionClosurePar::do_MemRegion(MemRegion mr) { |
duke@435 | 501 | // Align the end of mr so it's at a card boundary. |
duke@435 | 502 | // This is superfluous except at the end of the space; |
duke@435 | 503 | // we should do better than this XXX |
duke@435 | 504 | MemRegion mr2(mr.start(), (HeapWord*)round_to((intptr_t)mr.end(), |
duke@435 | 505 | CardTableModRefBS::card_size /* bytes */)); |
duke@435 | 506 | _t->par_mark_range(mr2); |
duke@435 | 507 | } |