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105 lines
2.5 KiB
C++
105 lines
2.5 KiB
C++
// -*- C++ -*-
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//==========================================================================
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/**
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* @file SV_Message_Queue.h
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*
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* $Id: SV_Message_Queue.h 80826 2008-03-04 14:51:23Z wotte $
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*
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* @author Douglas C. Schmidt <schmidt@uci.edu>
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*/
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//===========================================================================
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#ifndef ACE_SV_MESSAGE_QUEUE_H
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#define ACE_SV_MESSAGE_QUEUE_H
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#include /**/ "ace/pre.h"
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#include /**/ "ace/config-all.h"
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#if !defined (ACE_LACKS_PRAGMA_ONCE)
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# pragma once
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#endif /* ACE_LACKS_PRAGMA_ONCE */
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#include "ace/SV_Message.h"
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#include "ace/os_include/sys/os_stat.h"
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#include "ace/os_include/sys/os_ipc.h"
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#include "ace/Default_Constants.h"
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ACE_BEGIN_VERSIONED_NAMESPACE_DECL
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/**
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* @class ACE_SV_Message_Queue
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*
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* @brief Defines the header file for the C++ wrapper for System V IPC
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* message queues.
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*/
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class ACE_Export ACE_SV_Message_Queue
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{
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public:
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// = Useful symbolic constants.
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enum
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{
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ACE_CREATE = IPC_CREAT,
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ACE_OPEN = 0,
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ACE_NOWAIT = IPC_NOWAIT
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};
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// = Initialization and termination methods.
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/// Open a message queue using the <external_id>.
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ACE_SV_Message_Queue (void);
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ACE_SV_Message_Queue (key_t external_id,
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int create = ACE_SV_Message_Queue::ACE_OPEN,
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int perms = ACE_DEFAULT_FILE_PERMS);
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int open (key_t external_id,
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int create = ACE_SV_Message_Queue::ACE_OPEN,
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int perms = ACE_DEFAULT_FILE_PERMS);
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~ACE_SV_Message_Queue (void);
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/// Close down this instance of the message queue without removing it
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/// from the system.
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int close (void);
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/// Close down and remove the message queue from the system.
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int remove (void);
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// = Message transfer methods.
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ssize_t recv (ACE_SV_Message &mb,
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int length,
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long mtype = 0,
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int mflags = 0);
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int send (const ACE_SV_Message &mb,
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int length,
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int mflags = 0);
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/// Access the underlying control operations.
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int control (int option, void *arg = 0);
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/// Get the underly internal id.
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int get_id (void) const;
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/// Set the underly internal id.
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void set_id (int);
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/// Dump the state of an object.
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void dump (void) const;
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/// Declare the dynamic allocation hooks.
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ACE_ALLOC_HOOK_DECLARE;
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protected:
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/// Returned from the underlying <msgget> system call.
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int internal_id_;
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};
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ACE_END_VERSIONED_NAMESPACE_DECL
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#if defined (__ACE_INLINE__)
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#include "ace/SV_Message_Queue.inl"
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#endif /* __ACE_INLINE__ */
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#include /**/ "ace/post.h"
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#endif /* ACE_SV_MESSAGE_QUEUE_H */
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