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// Copyright 2011 Google Inc. All Rights Reserved.
#ifndef ART_SRC_SPACE_H_
#define ART_SRC_SPACE_H_
#include "globals.h"
#include "macros.h"
#include "mem_map.h"
#include "scoped_ptr.h"
namespace art {
class Object;
// A space contains memory allocated for managed objects.
class Space {
static Space* Create(size_t startup_size, size_t maximum_size);
Object* AllocWithGrowth(size_t num_bytes);
Object* AllocWithoutGrowth(size_t num_bytes);
size_t Free(void* ptr);
void Trim();
size_t MaxAllowedFootprint();
void Grow(size_t num_bytes);
byte* GetBase() const {
return base_;
byte* GetLimit() const {
return limit_;
size_t Size() const {
return limit_ - base_;
size_t AllocationSize(const Object* obj);
bool IsCondemned() const {
return true; // TODO
// The boundary tag overhead.
static const size_t kChunkOverhead = kWordSize;
Space(size_t startup_size, size_t maximum_size) :
maximum_size_(maximum_size) {
// Initializes the space and underlying storage.
bool Init();
void* CreateMallocSpace(void* base, size_t startup_size,
size_t maximum_size);
static void DontNeed(void* start, void* end, void* num_bytes);
void* mspace_;
scoped_ptr<MemMap> mem_map_;
byte* base_;
byte* limit_;
size_t startup_size_;
size_t maximum_size_;
bool is_condemned_;
} // namespace art
#endif // ART_SRC_SPACE_H_