src/hotspot/share/gc/g1/g1MemoryPool.cpp

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#include "gc/g1/g1CollectedHeap.hpp"
#include "gc/g1/g1HeapRegion.hpp"
#include "gc/g1/g1MemoryPool.hpp"
#include "gc/shared/gc_globals.hpp"

G1MemoryPoolSuper::G1MemoryPoolSuper(G1CollectedHeap* g1h,
                                     const char* name,
                                     size_t init_size,
                                     size_t max_size,
                                     bool support_usage_threshold) :
  CollectedMemoryPool(name,
                      init_size,
                      max_size,
                      support_usage_threshold),
  _g1mm(g1h->monitoring_support()) {
  assert(UseG1GC, "sanity");
}

G1EdenPool::G1EdenPool(G1CollectedHeap* g1h, size_t initial_size) :
  G1MemoryPoolSuper(g1h,
                    "G1 Eden Space",
                    initial_size,
                    MemoryUsage::undefined_size(),
                    false /* support_usage_threshold */) { }

MemoryUsage G1EdenPool::get_memory_usage() {
  return _g1mm->eden_space_memory_usage(initial_size(), max_size());
}

G1SurvivorPool::G1SurvivorPool(G1CollectedHeap* g1h, size_t initial_size) :
  G1MemoryPoolSuper(g1h,
                    "G1 Survivor Space",
                    initial_size,
                    MemoryUsage::undefined_size(),
                    false /* support_usage_threshold */) { }

MemoryUsage G1SurvivorPool::get_memory_usage() {
  return _g1mm->survivor_space_memory_usage(initial_size(), max_size());
}

G1OldGenPool::G1OldGenPool(G1CollectedHeap* g1h, size_t initial_size, size_t max_size) :
  G1MemoryPoolSuper(g1h,
                    "G1 Old Gen",
                    initial_size,
                    max_size,
                    true /* support_usage_threshold */) { }

MemoryUsage G1OldGenPool::get_memory_usage() {
  return _g1mm->old_gen_memory_usage(initial_size(), max_size());
}