ACE_SV_Shared_Memory3

#include <ace/SV_Shared_Memory.h>
class ACE_SV_Shared_Memory
{
  public:
    enum{ ACE_CREATE = IPC_CREAT, ACE_OPEN = 0 };
    ACE_SV_Shared_Memory (void);
    ACE_SV_Shared_Memory (
        key_t external_id,
        size_t size,
        int create,
        int perms = ACE_DEFAULT_FILE_PERMS,
        void *virtual_addr = 0,
        int flags = 0
        );
    ACE_SV_Shared_Memory (ACE_HANDLE internal_id, int flags = 0);
    int open (
        key_t external_id,
        size_t size,
        int create = ACE_SV_Shared_Memory::ACE_OPEN,
        int perms = ACE_DEFAULT_FILE_PERMS
        );
    int open_and_attach (
        key_t external_id,
        size_t size,
        int create = ACE_SV_Shared_Memory::ACE_OPEN,
        int perms = ACE_DEFAULT_FILE_PERMS,
        void *virtual_addr = 0,
        int flags = 0
        );
    int attach (void *virtual_addr = 0, int flags =0);
    int detach (void);
    int remove (void);
    int control (int cmd, void *buf);
    void *get_segment_ptr (void) const;
    int get_segment_size (void) const;
    ACE_HANDLE get_id (void) const;
    void dump (void) const;
    ACE_ALLOC_HOOK_DECLARE;
  protected:
    enum{ ALIGN_WORDB = 8 };
    ACE_HANDLE internal_id_;
    int size_;
    void *segment_ptr_;
    int round_up (size_t len);
};