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src/hotspot/share/memory/virtualspace.hpp
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*** 35,44 ****
--- 35,45 ----
char* _base;
size_t _size;
size_t _noaccess_prefix;
size_t _alignment;
bool _special;
+ int _fd_for_heap;
private:
bool _executable;
// ReservedSpace
ReservedSpace(char* base, size_t size, size_t alignment, bool special,
*** 113,123 ****
void initialize_compressed_heap(const size_t size, size_t alignment, bool large);
// Create protection page at the beginning of the space.
void establish_noaccess_prefix();
public:
// Constructor. Tries to find a heap that is good for compressed oops.
! ReservedHeapSpace(size_t size, size_t forced_base_alignment, bool large);
// Returns the base to be used for compression, i.e. so that null can be
// encoded safely and implicit null checks can work.
char *compressed_oop_base() { return _base - _noaccess_prefix; }
};
--- 114,126 ----
void initialize_compressed_heap(const size_t size, size_t alignment, bool large);
// Create protection page at the beginning of the space.
void establish_noaccess_prefix();
public:
// Constructor. Tries to find a heap that is good for compressed oops.
! // heap_allocation_directory is the path to the backing memory for Java heap. When set, Java heap will be allocated
! // on the device which is managed by the file system where the directory resides.
! ReservedHeapSpace(size_t size, size_t forced_base_alignment, bool large, const char* heap_allocation_directory = NULL);
// Returns the base to be used for compression, i.e. so that null can be
// encoded safely and implicit null checks can work.
char *compressed_oop_base() { return _base - _noaccess_prefix; }
};
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