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/**************************************************************************/
/* */
/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */
/* Copyright (c) 2008-2017 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */
/* Copyright (c) 2014-2022 Ulrich Sibiller <uli42@gmx.de> */
/* Copyright (c) 2014-2019 Mihai Moldovan <ionic@ionic.de> */
/* Copyright (c) 2011-2022 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */
/* */
/* NXCOMP, NX protocol compression and NX extensions to this software */
/* are copyright of the aforementioned persons and companies. */
/* */
/* Redistribution and use of the present software is allowed according */
/* to terms specified in the file LICENSE.nxcomp which comes in the */
/* source distribution. */
/* */
/* All rights reserved. */
/* */
/* NOTE: This software has received contributions from various other */
/* contributors, only the core maintainers and supporters are listed as */
/* copyright holders. Please contact us, if you feel you should be listed */
/* as copyright holder, as well. */
/* */
/**************************************************************************/
#ifndef SequenceQueue_H
#define SequenceQueue_H
//
// List of outstanding request messages which
// are waiting for a reply. This class is used
// in X client and server channels to correlate
// the replies sequence numbers to the original
// request type.
//
class SequenceQueue
{
public:
SequenceQueue();
virtual ~SequenceQueue();
void push(unsigned short int sequence, unsigned char opcode,
unsigned int data1 = 0, unsigned int data2 = 0,
unsigned int data3 = 0);
int peek(unsigned short int &sequence, unsigned char &opcode);
int peek(unsigned short int &sequence, unsigned char &opcode,
unsigned int &data1, unsigned int &data2,
unsigned int &data3);
int pop(unsigned short int &sequence, unsigned char &opcode,
unsigned int &data1, unsigned int &data2,
unsigned int &data3);
int pop(unsigned short int &sequence, unsigned char &opcode)
{
unsigned int data1, data2, data3;
return pop(sequence, opcode, data1, data2, data3);
}
int length()
{
return length_;
}
private:
struct RequestSequence
{
unsigned short int sequence;
unsigned char opcode;
unsigned int data1;
unsigned int data2;
unsigned int data3;
};
RequestSequence *queue_;
unsigned int size_;
unsigned int length_;
unsigned int start_;
unsigned int end_;
};
#endif /* SequenceQueue_H */
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