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/g1/g1CollectedHeap.inline.hpp"
  27 #include "gc/g1/g1OopClosures.inline.hpp"
  28 #include "gc/g1/g1ParScanThreadState.hpp"
  29 #include "gc/g1/g1_specialized_oop_closures.hpp"
  30 #include "memory/iterator.inline.hpp"
  31 #include "utilities/stack.inline.hpp"
  32 
  33 G1ParCopyHelper::G1ParCopyHelper(G1CollectedHeap* g1,  G1ParScanThreadState* par_scan_state) :
  34   _g1(g1),
  35   _par_scan_state(par_scan_state),
  36   _worker_id(par_scan_state->worker_id()),
  37   _scanned_klass(NULL),
  38   _cm(_g1->concurrent_mark())
  39 { }
  40 
  41 G1ScanClosureBase::G1ScanClosureBase(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) :
  42   _g1(g1), _par_scan_state(par_scan_state), _from(NULL)
  43 { }
  44 
  45 void G1KlassScanClosure::do_klass(Klass* klass) {
  46   // If the klass has not been dirtied we know that there's
  47   // no references into  the young gen and we can skip it.
  48   if (!_process_only_dirty || klass->has_modified_oops()) {
  49     // Clean the klass since we're going to scavenge all the metadata.
  50     klass->clear_modified_oops();
  51 
  52     // Tell the closure that this klass is the Klass to scavenge
  53     // and is the one to dirty if oops are left pointing into the young gen.
  54     _closure->set_scanned_klass(klass);
  55 
  56     klass->oops_do(_closure);


  57 
  58     _closure->set_scanned_klass(NULL);
  59   }
  60   _count++;
  61 }
  62 
  63 // Generate G1 specialized oop_oop_iterate functions.
  64 SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_G1(ALL_KLASS_OOP_OOP_ITERATE_DEFN)

  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/g1/g1CollectedHeap.inline.hpp"
  27 #include "gc/g1/g1OopClosures.inline.hpp"
  28 #include "gc/g1/g1ParScanThreadState.hpp"
  29 #include "gc/g1/g1_specialized_oop_closures.hpp"
  30 #include "memory/iterator.inline.hpp"
  31 #include "utilities/stack.inline.hpp"
  32 
  33 G1ParCopyHelper::G1ParCopyHelper(G1CollectedHeap* g1,  G1ParScanThreadState* par_scan_state) :
  34   _g1(g1),
  35   _par_scan_state(par_scan_state),
  36   _worker_id(par_scan_state->worker_id()),
  37   _scanned_cld(NULL),
  38   _cm(_g1->concurrent_mark())
  39 { }
  40 
  41 G1ScanClosureBase::G1ScanClosureBase(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) :
  42   _g1(g1), _par_scan_state(par_scan_state), _from(NULL)
  43 { }
  44 
  45 void G1CLDScanClosure::do_cld(ClassLoaderData* cld) {
  46   // If the class loader data has not been dirtied we know that there's
  47   // no references into  the young gen and we can skip it.
  48   if (!_process_only_dirty || cld->has_modified_oops()) {


  49 
  50     // Tell the closure that this class loader data is the CLD to scavenge
  51     // and is the one to dirty if oops are left pointing into the young gen.
  52     _closure->set_scanned_cld(cld);
  53 
  54     // Clean the cld since we're going to scavenge all the metadata.
  55     // Clear modified oops only if this cld is claimed.
  56     cld->oops_do(_closure, _must_claim, /*clear_modified_oops*/true);
  57 
  58     _closure->set_scanned_cld(NULL);
  59   }
  60   _count++;
  61 }
  62 
  63 // Generate G1 specialized oop_oop_iterate functions.
  64 SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_G1(ALL_KLASS_OOP_OOP_ITERATE_DEFN)