49     CollectedMemoryPool(name, space->capacity(), max_size, support_usage_threshold),
  50     _space(space) {
  51   }
  52 
  53   MemoryUsage get_memory_usage() {
  54     size_t max_heap_size   = (available_for_allocation() ? max_size() : 0);
  55     size_t used      = used_in_bytes();
  56     size_t committed = _space->capacity();
  57 
  58     return MemoryUsage(initial_size(), used, committed, max_heap_size);
  59   }
  60 
  61   size_t used_in_bytes() {
  62     return _space->used();
  63   }
  64 };
  65 
  66 CMSHeap::CMSHeap(GenCollectorPolicy *policy) :
  67     GenCollectedHeap(policy,
  68                      Generation::ParNew,
  69                      Generation::ConcurrentMarkSweep),

  70     _eden_pool(NULL),
  71     _survivor_pool(NULL),
  72     _old_pool(NULL) {
  73   _workers = new WorkGang("GC Thread", ParallelGCThreads,
  74                           /* are_GC_task_threads */true,
  75                           /* are_ConcurrentGC_threads */false);
  76   _workers->initialize_workers();
  77 }
  78 
  79 jint CMSHeap::initialize() {
  80   jint status = GenCollectedHeap::initialize();
  81   if (status != JNI_OK) return status;
  82 
  83   // If we are running CMS, create the collector responsible
  84   // for collecting the CMS generations.
  85   if (!create_cms_collector()) {
  86     return JNI_ENOMEM;
  87   }
  88 
  89   return JNI_OK;

  49     CollectedMemoryPool(name, space->capacity(), max_size, support_usage_threshold),
  50     _space(space) {
  51   }
  52 
  53   MemoryUsage get_memory_usage() {
  54     size_t max_heap_size   = (available_for_allocation() ? max_size() : 0);
  55     size_t used      = used_in_bytes();
  56     size_t committed = _space->capacity();
  57 
  58     return MemoryUsage(initial_size(), used, committed, max_heap_size);
  59   }
  60 
  61   size_t used_in_bytes() {
  62     return _space->used();
  63   }
  64 };
  65 
  66 CMSHeap::CMSHeap(GenCollectorPolicy *policy) :
  67     GenCollectedHeap(policy,
  68                      Generation::ParNew,
  69                      Generation::ConcurrentMarkSweep,
  70                      "ParNew::CMS"),
  71     _eden_pool(NULL),
  72     _survivor_pool(NULL),
  73     _old_pool(NULL) {
  74   _workers = new WorkGang("GC Thread", ParallelGCThreads,
  75                           /* are_GC_task_threads */true,
  76                           /* are_ConcurrentGC_threads */false);
  77   _workers->initialize_workers();
  78 }
  79 
  80 jint CMSHeap::initialize() {
  81   jint status = GenCollectedHeap::initialize();
  82   if (status != JNI_OK) return status;
  83 
  84   // If we are running CMS, create the collector responsible
  85   // for collecting the CMS generations.
  86   if (!create_cms_collector()) {
  87     return JNI_ENOMEM;
  88   }
  89 
  90   return JNI_OK;