mirror of https://github.com/Icinga/icinga2.git
76 lines
2.8 KiB
C++
76 lines
2.8 KiB
C++
/******************************************************************************
|
|
* Icinga 2 *
|
|
* Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/) *
|
|
* *
|
|
* This program is free software; you can redistribute it and/or *
|
|
* modify it under the terms of the GNU General Public License *
|
|
* as published by the Free Software Foundation; either version 2 *
|
|
* of the License, or (at your option) any later version. *
|
|
* *
|
|
* This program is distributed in the hope that it will be useful, *
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
|
* GNU General Public License for more details. *
|
|
* *
|
|
* You should have received a copy of the GNU General Public License *
|
|
* along with this program; if not, write to the Free Software Foundation *
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
|
|
******************************************************************************/
|
|
|
|
#ifndef IOQUEUE_H
|
|
#define IOQUEUE_H
|
|
|
|
namespace icinga
|
|
{
|
|
|
|
/**
|
|
* An I/O queue.
|
|
*
|
|
* @ingroup base
|
|
*/
|
|
class IOQueue
|
|
{
|
|
public:
|
|
/**
|
|
* Retrieves the number of bytes available for reading.
|
|
*
|
|
* @returns The number of available bytes.
|
|
*/
|
|
virtual size_t GetAvailableBytes(void) const = 0;
|
|
|
|
/**
|
|
* Reads data from the queue without advancing the read pointer. Trying
|
|
* to read more data than is available in the queue is a programming error.
|
|
* Use GetBytesAvailable() to check how much data is available.
|
|
*
|
|
* @param buffer The buffer where data should be stored. May be NULL if
|
|
* you're not actually interested in the data.
|
|
* @param count The number of bytes to read from the queue.
|
|
*/
|
|
virtual void Peek(void *buffer, size_t count) = 0;
|
|
|
|
/**
|
|
* Reads data from the queue. Trying to read more data than is
|
|
* available in the queue is a programming error. Use GetBytesAvailable()
|
|
* to check how much data is available.
|
|
*
|
|
* @param buffer The buffer where data should be stored. May be NULL if you're
|
|
* not actually interested in the data.
|
|
* @param count The number of bytes to read from the queue.
|
|
*/
|
|
virtual void Read(void *buffer, size_t count) = 0;
|
|
|
|
/**
|
|
* Writes data to the queue.
|
|
*
|
|
* @param buffer The data that is to be written.
|
|
* @param count The number of bytes to write.
|
|
* @returns The number of bytes written
|
|
*/
|
|
virtual void Write(const void *buffer, size_t count) = 0;
|
|
};
|
|
|
|
}
|
|
|
|
#endif /* IOQUEUE_H */
|