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src/hotspot/share/gc/g1/g1StringDedupQueue.cpp

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  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 "classfile/javaClasses.inline.hpp"
  27 #include "gc/g1/g1CollectedHeap.hpp"
  28 #include "gc/g1/g1StringDedup.hpp"
  29 #include "gc/g1/g1StringDedupQueue.hpp"
  30 #include "gc/shared/gcLocker.hpp"
  31 #include "logging/log.hpp"
  32 #include "oops/oop.inline.hpp"
  33 #include "runtime/atomic.hpp"
  34 #include "runtime/mutexLocker.hpp"

  35 #include "utilities/stack.inline.hpp"
  36 
  37 G1StringDedupQueue* G1StringDedupQueue::_queue = NULL;
  38 const size_t        G1StringDedupQueue::_max_size = 1000000; // Max number of elements per queue
  39 const size_t        G1StringDedupQueue::_max_cache_size = 0; // Max cache size per queue
  40 
  41 G1StringDedupQueue::G1StringDedupQueue() :
  42   _cursor(0),
  43   _cancel(false),
  44   _empty(true),
  45   _dropped(0) {
  46   _nqueues = ParallelGCThreads;
  47   _queues = NEW_C_HEAP_ARRAY(G1StringDedupWorkerQueue, _nqueues, mtGC);
  48   for (size_t i = 0; i < _nqueues; i++) {
  49     new (_queues + i) G1StringDedupWorkerQueue(G1StringDedupWorkerQueue::default_segment_size(), _max_cache_size, _max_size);
  50   }
  51 }
  52 
  53 G1StringDedupQueue::~G1StringDedupQueue() {
  54   ShouldNotReachHere();




  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 "classfile/javaClasses.inline.hpp"
  27 #include "gc/g1/g1CollectedHeap.hpp"
  28 #include "gc/g1/g1StringDedup.hpp"
  29 #include "gc/g1/g1StringDedupQueue.hpp"

  30 #include "logging/log.hpp"
  31 #include "oops/oop.inline.hpp"
  32 #include "runtime/atomic.hpp"
  33 #include "runtime/mutexLocker.hpp"
  34 #include "runtime/safepointVerifiers.hpp"
  35 #include "utilities/stack.inline.hpp"
  36 
  37 G1StringDedupQueue* G1StringDedupQueue::_queue = NULL;
  38 const size_t        G1StringDedupQueue::_max_size = 1000000; // Max number of elements per queue
  39 const size_t        G1StringDedupQueue::_max_cache_size = 0; // Max cache size per queue
  40 
  41 G1StringDedupQueue::G1StringDedupQueue() :
  42   _cursor(0),
  43   _cancel(false),
  44   _empty(true),
  45   _dropped(0) {
  46   _nqueues = ParallelGCThreads;
  47   _queues = NEW_C_HEAP_ARRAY(G1StringDedupWorkerQueue, _nqueues, mtGC);
  48   for (size_t i = 0; i < _nqueues; i++) {
  49     new (_queues + i) G1StringDedupWorkerQueue(G1StringDedupWorkerQueue::default_segment_size(), _max_cache_size, _max_size);
  50   }
  51 }
  52 
  53 G1StringDedupQueue::~G1StringDedupQueue() {
  54   ShouldNotReachHere();


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