src/os/linux/vm/os_linux.hpp

*** 97,106 ****
--- 97,109 ----
    static char* reserve_memory_special_shm(size_t bytes, size_t alignment, char* req_addr, bool exec);
    static char* reserve_memory_special_huge_tlbfs(size_t bytes, size_t alignment, char* req_addr, bool exec);
    static char* reserve_memory_special_huge_tlbfs_only(size_t bytes, char* req_addr, bool exec);
    static char* reserve_memory_special_huge_tlbfs_mixed(size_t bytes, size_t alignment, char* req_addr, bool exec);
  
+   static char*  reserve_memory_with_backing_file(size_t bytes, char* requested_addr,
+                                                  size_t alignment_hint, const char* backingFileDir);
+ 
    static bool release_memory_special_impl(char* base, size_t bytes);
    static bool release_memory_special_shm(char* base, size_t bytes);
    static bool release_memory_special_huge_tlbfs(char* base, size_t bytes);
  
    static void print_full_memory_info(outputStream* st);
*** 247,256 ****
--- 250,265 ----
    static void set_numa_tonode_memory(numa_tonode_memory_func_t func) { _numa_tonode_memory = func; }
    static void set_numa_interleave_memory(numa_interleave_memory_func_t func) { _numa_interleave_memory = func; }
    static void set_numa_set_bind_policy(numa_set_bind_policy_func_t func) { _numa_set_bind_policy = func; }
    static void set_numa_all_nodes(unsigned long* ptr) { _numa_all_nodes = ptr; }
    static int sched_getcpu_syscall(void);
+ 
+   static int create_tmpfile(const char* dir, size_t size, bool exec);
+   static char* reserve_memory_with_backing_file_aligned(size_t size, size_t alignment, int fd);
+   static char* reserve_memory_with_backing_file_at(size_t bytes, char* requested_addr, int fd);
+ 
+ 
   public:
    static int sched_getcpu()  { return _sched_getcpu != NULL ? _sched_getcpu() : -1; }
    static int numa_node_to_cpus(int node, unsigned long *buffer, int bufferlen) {
      return _numa_node_to_cpus != NULL ? _numa_node_to_cpus(node, buffer, bufferlen) : -1;
    }