text: /* -*- C++ -*- */
  
  //=============================================================================
  /**
   *  @file    Shared_Memory_SV.h
   *
   *  Shared_Memory_SV.h,v 4.10 2000/11/01 22:17:03 coryan Exp
   *
   *  @author Doug Schmidt
   */
  //=============================================================================
  
  
  #ifndef ACE_SHARED_MALLOC_SV_H
  #define ACE_SHARED_MALLOC_SV_H
  #include "ace/pre.h"
  
  #include "ace/Shared_Memory.h"
  
  #if !defined (ACE_LACKS_PRAGMA_ONCE)
  # pragma once
  #endif /* ACE_LACKS_PRAGMA_ONCE */
  
  #include "ace/SV_Shared_Memory.h"
  
  /**
   * @class ACE_Shared_Memory_SV
   *
   * @brief Shared memory wrapper based on System V shared memory.
   *
   * This class provides a very simple-minded shared memory
   * manager.  For more a powerful memory allocator please see
   * <ACE_Malloc>.
   */
  class ACE_Export ACE_Shared_Memory_SV : public ACE_Shared_Memory
  {
  public:
    enum
      {
        ACE_CREATE = IPC_CREAT,
        ACE_OPEN = 0
      };
  
    // = Initialization and termination methods.
    ACE_Shared_Memory_SV (void);
    ACE_Shared_Memory_SV (key_t id,
                          int length,
                          int create = ACE_Shared_Memory_SV::ACE_OPEN,
                          int perms = ACE_DEFAULT_FILE_PERMS,
                          void *addr = 0,
                          int flags = 0);
  
    int open (key_t id,
              int length,
              int create = ACE_Shared_Memory_SV::ACE_OPEN,
              int perms = ACE_DEFAULT_FILE_PERMS,
              void *addr = 0,
              int flags = 0);
  
    /// Close down the shared memory segment.
    virtual int close (void);
  
    /// Remove the underlying shared memory segment.
    virtual int remove (void);
  
    // = Allocation and deallocation methods.
    /// Create a new chuck of memory containing <size> bytes.
    virtual void *malloc (size_t = 0);
  
    /// Free a chuck of memory allocated by <ACE_Shared_Memory_SV::malloc>.
    virtual int free (void *p);
  
    /// Return the size of the shared memory segment.
    virtual int get_segment_size (void) const;
  
    /// Return the ID of the shared memory segment (i.e., a System V
    /// shared memory internal id).
    virtual ACE_HANDLE get_id (void) const;
  
    /// Dump the state of an object.
    void dump (void) const;
  
    /// Declare the dynamic allocation hooks.
    ACE_ALLOC_HOOK_DECLARE;
  
  private:
     /// This version is implemented with System V shared memory
     /// segments.
     ACE_SV_Shared_Memory shared_memory_;
  };
  
  #if defined (__ACE_INLINE__)
  #include "ace/Shared_Memory_SV.i"
  #endif /* __ACE_INLINE__ */
  
  #include "ace/post.h"
  #endif /* ACE_SHARED_MALLOC_SV_H */
  