src/hotspot/os_cpu/linux_x86/gc/z/zBackingFile_linux_x86.hpp

*** 24,39 ****
  #ifndef OS_CPU_LINUX_X86_GC_Z_ZBACKINGFILE_LINUX_X86_HPP
  #define OS_CPU_LINUX_X86_GC_Z_ZBACKINGFILE_LINUX_X86_HPP
  
  #include "memory/allocation.hpp"
  
  class ZBackingFile {
  private:
-   static bool _hugetlbfs_mmap_retry;
- 
    int      _fd;
    uint64_t _filesystem;
    size_t   _available;
    bool     _initialized;
  
    int create_mem_fd(const char* name) const;
    int create_file_fd(const char* name) const;
--- 24,41 ----
  #ifndef OS_CPU_LINUX_X86_GC_Z_ZBACKINGFILE_LINUX_X86_HPP
  #define OS_CPU_LINUX_X86_GC_Z_ZBACKINGFILE_LINUX_X86_HPP
  
  #include "memory/allocation.hpp"
  
+ class ZErrno;
+ 
  class ZBackingFile {
  private:
    int      _fd;
+   size_t   _size;
    uint64_t _filesystem;
+   size_t   _block_size;
    size_t   _available;
    bool     _initialized;
  
    int create_mem_fd(const char* name) const;
    int create_file_fd(const char* name) const;
*** 41,63 ****
  
    bool is_tmpfs() const;
    bool is_hugetlbfs() const;
    bool tmpfs_supports_transparent_huge_pages() const;
  
!   bool try_split_and_expand_tmpfs(size_t offset, size_t length, size_t alignment) const;
!   bool try_expand_tmpfs(size_t offset, size_t length, size_t alignment) const;
!   bool try_expand_tmpfs(size_t offset, size_t length) const;
!   bool try_expand_hugetlbfs(size_t offset, size_t length) const;
!   bool try_expand_tmpfs_or_hugetlbfs(size_t offset, size_t length, size_t alignment) const;
  
  public:
    ZBackingFile();
  
    bool is_initialized() const;
  
    int fd() const;
    size_t available() const;
  
!   size_t try_expand(size_t offset, size_t length, size_t alignment) const;
  };
  
  #endif // OS_CPU_LINUX_X86_GC_Z_ZBACKINGFILE_LINUX_X86_HPP
--- 43,73 ----
  
    bool is_tmpfs() const;
    bool is_hugetlbfs() const;
    bool tmpfs_supports_transparent_huge_pages() const;
  
!   ZErrno fallocate_compat_ftruncate(size_t size) const;
!   ZErrno fallocate_compat_mmap(size_t offset, size_t length, bool reserve_only) const;
!   ZErrno fallocate_compat_pwrite(size_t offset, size_t length) const;
!   ZErrno fallocate_fill_hole_compat(size_t offset, size_t length);
!   ZErrno fallocate_fill_hole_syscall(size_t offset, size_t length);
!   ZErrno fallocate_fill_hole(size_t offset, size_t length);
!   ZErrno fallocate_punch_hole(size_t offset, size_t length);
!   ZErrno split_and_fallocate(bool punch_hole, size_t offset, size_t length);
!   ZErrno fallocate(bool punch_hole, size_t offset, size_t length);
! 
!   bool commit_inner(size_t offset, size_t length);
  
  public:
    ZBackingFile();
  
    bool is_initialized() const;
  
    int fd() const;
+   size_t size() const;
    size_t available() const;
  
!   size_t commit(size_t offset, size_t length);
!   size_t uncommit(size_t offset, size_t length);
  };
  
  #endif // OS_CPU_LINUX_X86_GC_Z_ZBACKINGFILE_LINUX_X86_HPP