53 #include "utilities/workgroup.hpp"
  54 #include "utilities/macros.hpp"
  55 #if INCLUDE_ALL_GCS
  56 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp"
  57 #include "gc_implementation/concurrentMarkSweep/vmCMSOperations.hpp"
  58 #endif // INCLUDE_ALL_GCS
  59 
  60 GenCollectedHeap* GenCollectedHeap::_gch;
  61 NOT_PRODUCT(size_t GenCollectedHeap::_skip_header_HeapWords = 0;)
  62 
  63 // The set of potentially parallel tasks in root scanning.
  64 enum GCH_strong_roots_tasks {
  65   // We probably want to parallelize both of these internally, but for now...
  66   GCH_PS_younger_gens,
  67   // Leave this one last.
  68   GCH_PS_NumElements
  69 };
  70 
  71 GenCollectedHeap::GenCollectedHeap(GenCollectorPolicy *policy) :
  72   SharedHeap(policy),

  73   _gen_policy(policy),
  74   _gen_process_roots_tasks(new SubTasksDone(GCH_PS_NumElements)),
  75   _full_collections_completed(0)
  76 {
  77   if (_gen_process_roots_tasks == NULL ||
  78       !_gen_process_roots_tasks->valid()) {
  79     vm_exit_during_initialization("Failed necessary allocation.");
  80   }
  81   assert(policy != NULL, "Sanity check");
  82 }
  83 
  84 jint GenCollectedHeap::initialize() {
  85   CollectedHeap::pre_initialize();
  86 
  87   int i;
  88   _n_gens = gen_policy()->number_of_generations();
  89 
  90   // While there are no constraints in the GC code that HeapWordSize
  91   // be any particular value, there are multiple other areas in the
  92   // system which believe this to be true (e.g. oop->object_size in some

  53 #include "utilities/workgroup.hpp"
  54 #include "utilities/macros.hpp"
  55 #if INCLUDE_ALL_GCS
  56 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp"
  57 #include "gc_implementation/concurrentMarkSweep/vmCMSOperations.hpp"
  58 #endif // INCLUDE_ALL_GCS
  59 
  60 GenCollectedHeap* GenCollectedHeap::_gch;
  61 NOT_PRODUCT(size_t GenCollectedHeap::_skip_header_HeapWords = 0;)
  62 
  63 // The set of potentially parallel tasks in root scanning.
  64 enum GCH_strong_roots_tasks {
  65   // We probably want to parallelize both of these internally, but for now...
  66   GCH_PS_younger_gens,
  67   // Leave this one last.
  68   GCH_PS_NumElements
  69 };
  70 
  71 GenCollectedHeap::GenCollectedHeap(GenCollectorPolicy *policy) :
  72   SharedHeap(policy),
  73   _rem_set(NULL),
  74   _gen_policy(policy),
  75   _gen_process_roots_tasks(new SubTasksDone(GCH_PS_NumElements)),
  76   _full_collections_completed(0)
  77 {
  78   if (_gen_process_roots_tasks == NULL ||
  79       !_gen_process_roots_tasks->valid()) {
  80     vm_exit_during_initialization("Failed necessary allocation.");
  81   }
  82   assert(policy != NULL, "Sanity check");
  83 }
  84 
  85 jint GenCollectedHeap::initialize() {
  86   CollectedHeap::pre_initialize();
  87 
  88   int i;
  89   _n_gens = gen_policy()->number_of_generations();
  90 
  91   // While there are no constraints in the GC code that HeapWordSize
  92   // be any particular value, there are multiple other areas in the
  93   // system which believe this to be true (e.g. oop->object_size in some