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src/hotspot/share/gc/shared/threadLocalAllocBuffer.cpp

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rev 52072 : 8211955: GC abstraction for LAB reserve


   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 "gc/shared/threadLocalAllocBuffer.inline.hpp"
  27 #include "logging/log.hpp"
  28 #include "memory/resourceArea.hpp"
  29 #include "memory/universe.hpp"
  30 #include "oops/oop.inline.hpp"
  31 #include "runtime/thread.inline.hpp"
  32 #include "runtime/threadSMR.hpp"
  33 #include "utilities/copy.hpp"
  34 
  35 size_t       ThreadLocalAllocBuffer::_max_size = 0;
  36 int          ThreadLocalAllocBuffer::_reserve_for_allocation_prefetch = 0;
  37 unsigned int ThreadLocalAllocBuffer::_target_refills = 0;
  38 
  39 size_t ThreadLocalAllocBuffer::remaining() {
  40   if (end() == NULL) {
  41     return 0;
  42   }
  43 
  44   return pointer_delta(hard_end(), top());
  45 }


 443                       _allocating_threads, _total_refills, _max_refills,
 444                       _total_slow_allocations, _max_slow_allocations, waste_percent,
 445                       _total_gc_waste * HeapWordSize, _max_gc_waste * HeapWordSize,
 446                       _total_slow_refill_waste * HeapWordSize, _max_slow_refill_waste * HeapWordSize,
 447                       _total_fast_refill_waste * HeapWordSize, _max_fast_refill_waste * HeapWordSize);
 448 
 449   if (UsePerfData) {
 450     _perf_allocating_threads      ->set_value(_allocating_threads);
 451     _perf_total_refills           ->set_value(_total_refills);
 452     _perf_max_refills             ->set_value(_max_refills);
 453     _perf_total_allocations       ->set_value(_total_allocations);
 454     _perf_total_gc_waste          ->set_value(_total_gc_waste);
 455     _perf_max_gc_waste            ->set_value(_max_gc_waste);
 456     _perf_total_slow_refill_waste ->set_value(_total_slow_refill_waste);
 457     _perf_max_slow_refill_waste   ->set_value(_max_slow_refill_waste);
 458     _perf_total_fast_refill_waste ->set_value(_total_fast_refill_waste);
 459     _perf_max_fast_refill_waste   ->set_value(_max_fast_refill_waste);
 460     _perf_total_slow_allocations  ->set_value(_total_slow_allocations);
 461     _perf_max_slow_allocations    ->set_value(_max_slow_allocations);
 462   }





 463 }


   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 "gc/shared/collectedHeap.hpp"
  27 #include "gc/shared/threadLocalAllocBuffer.inline.hpp"
  28 #include "logging/log.hpp"
  29 #include "memory/resourceArea.hpp"
  30 #include "memory/universe.hpp"
  31 #include "oops/oop.inline.hpp"
  32 #include "runtime/thread.inline.hpp"
  33 #include "runtime/threadSMR.hpp"
  34 #include "utilities/copy.hpp"
  35 
  36 size_t       ThreadLocalAllocBuffer::_max_size = 0;
  37 int          ThreadLocalAllocBuffer::_reserve_for_allocation_prefetch = 0;
  38 unsigned int ThreadLocalAllocBuffer::_target_refills = 0;
  39 
  40 size_t ThreadLocalAllocBuffer::remaining() {
  41   if (end() == NULL) {
  42     return 0;
  43   }
  44 
  45   return pointer_delta(hard_end(), top());
  46 }


 444                       _allocating_threads, _total_refills, _max_refills,
 445                       _total_slow_allocations, _max_slow_allocations, waste_percent,
 446                       _total_gc_waste * HeapWordSize, _max_gc_waste * HeapWordSize,
 447                       _total_slow_refill_waste * HeapWordSize, _max_slow_refill_waste * HeapWordSize,
 448                       _total_fast_refill_waste * HeapWordSize, _max_fast_refill_waste * HeapWordSize);
 449 
 450   if (UsePerfData) {
 451     _perf_allocating_threads      ->set_value(_allocating_threads);
 452     _perf_total_refills           ->set_value(_total_refills);
 453     _perf_max_refills             ->set_value(_max_refills);
 454     _perf_total_allocations       ->set_value(_total_allocations);
 455     _perf_total_gc_waste          ->set_value(_total_gc_waste);
 456     _perf_max_gc_waste            ->set_value(_max_gc_waste);
 457     _perf_total_slow_refill_waste ->set_value(_total_slow_refill_waste);
 458     _perf_max_slow_refill_waste   ->set_value(_max_slow_refill_waste);
 459     _perf_total_fast_refill_waste ->set_value(_total_fast_refill_waste);
 460     _perf_max_fast_refill_waste   ->set_value(_max_fast_refill_waste);
 461     _perf_total_slow_allocations  ->set_value(_total_slow_allocations);
 462     _perf_max_slow_allocations    ->set_value(_max_slow_allocations);
 463   }
 464 }
 465 
 466 size_t ThreadLocalAllocBuffer::end_reserve() {
 467   size_t reserve_size = Universe::heap()->tlab_alloc_reserve();
 468   return MAX2(reserve_size, (size_t)_reserve_for_allocation_prefetch);
 469 }
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