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/* -*- C++ -*- */
// $Id$
// ============================================================================
//
// = LIBRARY
// ace
//
// = FILENAME
// SV_Message_Queue.h
//
// = AUTHOR
// Doug Schmidt
//
// ============================================================================
#ifndef ACE_MESSAGE_QUEUE_H
#define ACE_MESSAGE_QUEUE_H
#include "ace/ACE.h"
#include "ace/SV_Message.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
#pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
class ACE_Export ACE_SV_Message_Queue
{
// = TITLE
// Defines the header file for the C++ wrapper for System V IPC
// message queues.
public:
// = Useful symbolic constants.
enum
{
ACE_CREATE = IPC_CREAT,
ACE_OPEN = 0,
ACE_NOWAIT = IPC_NOWAIT
};
// = Initialization and termination methods.
ACE_SV_Message_Queue (void);
ACE_SV_Message_Queue (key_t external_id,
int create = ACE_SV_Message_Queue::ACE_OPEN,
int perms = ACE_DEFAULT_FILE_PERMS);
int open (key_t external_id,
int create = ACE_SV_Message_Queue::ACE_OPEN,
int perms = ACE_DEFAULT_FILE_PERMS);
// Open a message queue using the <external_id>.
~ACE_SV_Message_Queue (void);
int close (void);
// Close down this instance of the message queue without removing it
// from the system.
int remove (void);
// Close down and remove the message queue from the system.
// = Message transfer methods.
int recv (ACE_SV_Message &mb,
int length,
long mtype = 0,
int mflags = 0);
int send (const ACE_SV_Message &mb,
int length,
int mflags = 0);
int control (int option, void *arg = 0);
// Access the underlying control operations.
// = Get/set the underly internal id.
int get_id (void);
void set_id (int);
void dump (void) const;
// Dump the state of an object.
ACE_ALLOC_HOOK_DECLARE;
// Declare the dynamic allocation hooks.
protected:
int internal_id_;
// Returned from the underlying msgget() system call.
};
#if !defined (ACE_LACKS_INLINE_FUNCTIONS)
#include "ace/SV_Message_Queue.i"
#endif
#endif /* ACE_MESSAGE_QUEUE_H */
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