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Diffstat (limited to 'nxcomp/src/SequenceQueue.h')
| -rw-r--r-- | nxcomp/src/SequenceQueue.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/nxcomp/src/SequenceQueue.h b/nxcomp/src/SequenceQueue.h new file mode 100644 index 000000000..2a72bc3fe --- /dev/null +++ b/nxcomp/src/SequenceQueue.h @@ -0,0 +1,91 @@ +/**************************************************************************/ +/* */ +/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */ +/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */ +/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de> */ +/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de> */ +/* Copyright (c) 2011-2016 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 */ |