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/* -*- C++ -*- */
// $Id$
// ============================================================================
//
// = LIBRARY
// ACE
//
// = FILENAME
// ACE_Time_Request_Reply.h
//
// = DESCRIPTION
// Define the format used to exchange messages between the
// ACE_Time_Server and clerks.
//
// = AUTHOR
// Prashant Jain
//
// ============================================================================
#ifndef ACE_TIME_REQUEST_REPLY_H
#define ACE_TIME_REQUEST_REPLY_H
#include "ace/Time_Value.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ace/SString.h"
class ACE_Export ACE_Time_Request
{
// = TITLE
// Message format for delivering requests to the ACE_Time Server.
//
// = DESCRIPTION
// This class is implemented to minimize data copying.
// In particular, all marshaling is done in situ...
public:
enum Constants
{
// Request message types.
TIME_UPDATE = 01,
// Class-specific constant values.
MAX_TIME_LEN = MAXPATHLEN + 1
};
ACE_Time_Request (void);
// Default constructor.
ACE_Time_Request (ACE_INT32 msg_type, // Type of request.
const ACE_UINT32 time,
ACE_Time_Value *timeout = 0); // Max time waiting for request.
// Create a <ACE_Time_Request> message.
void init (void);
// Initialize length_ in order to ensure correct byte ordering
// before a request is sent.
// Get the fixed size of message
ssize_t size (void) const;
// = Set/get the type of the message.
ACE_INT32 msg_type (void) const;
void msg_type (ACE_INT32);
// = Set/get the time
ACE_UINT32 time (void) const;
void time (ACE_UINT32 t);
// = Set/get the blocking semantics.
ACE_UINT32 block_forever (void) const;
void block_forever (ACE_UINT32);
// = Set/get the timeout.
ACE_Time_Value timeout (void) const;
void timeout (const ACE_Time_Value timeout);
int encode (void *&);
// Encode the message before transmission.
int decode (void);
// Decode message after reception.
void dump (void) const;
// Print out the values of the message for debugging purposes.
private:
// = The 5 fields in the <Transfer> struct are transmitted to the server.
// The remaining 2 fields are not tranferred -- they are used only on
// the server-side to simplify lookups.
struct Transfer
{
ACE_INT32 msg_type_;
// Type of the request (i.e., <TIME_UPDATE>)
ACE_UINT32 block_forever_;
// Indicates if we should block forever. If 0, then <secTimeout_>
// and <usecTimeout_> indicates how long we should wait.
ACE_UINT32 sec_timeout_;
// Max seconds willing to wait for name if not blocking forever.
ACE_UINT32 usec_timeout_;
// Max micro seconds to wait for name if not blocking forever.
ACE_UINT32 time_;
// The data portion contains <time_>
};
Transfer transfer_;
// Transfer buffer.
ACE_UINT32 time_;
// Time
};
#endif /* ACE_TIME_REQUEST_REPLY_H */
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