Initial Source Code commit
Initial commit of original Tiberian Dawn and Red Alert source code converted to build as DLLs, and compatible with the release version of Command & Conquer Remastered.
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REDALERT/COMQUEUE.H
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REDALERT/COMQUEUE.H
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//
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// Copyright 2020 Electronic Arts Inc.
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//
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is free
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// software: you can redistribute it and/or modify it under the terms of
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// the GNU General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed
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// in the hope that it will be useful, but with permitted additional restrictions
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// under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT
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// distributed with this program. You should have received a copy of the
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// GNU General Public License along with permitted additional restrictions
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// with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
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/* $Header: F:\projects\c&c0\vcs\code\comqueue.h_v 4.1 11 Apr 1996 18:26:02 JOE_BOSTIC $ */
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/***************************************************************************
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** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S **
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***************************************************************************
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* *
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* Project Name : Command & Conquer *
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* *
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* File Name : COMQUEUE.H *
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* *
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* Programmer : Bill Randolph *
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* *
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* Start Date : December 19, 1994 *
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* *
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* Last Update : April 1, 1995 [BR] *
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* *
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*-------------------------------------------------------------------------*
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* *
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* This class's job is to queue up outgoing messages & incoming messages, *
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* and serves as a storage area for various flags for ACK & Retry logic. *
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* It allows the application to keep track of how many messages have *
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* passed through this queue, in & out, so packets can use this as a *
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* unique ID. (If packets have a unique ID, the application can use this *
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* to detect re-sends.) *
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* *
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* The queues act as FIFO buffers (First-In, First-Out). The first entry *
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* placed in a queue is the first one read from it, and so on. The *
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* controlling application must ensure it places the entries on the queue *
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* in the order it wants to access them. *
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* *
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* The queue is implemented as an array of Queue Entries. Index 0 is the *
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* first element placed on the queue, and is the first retrieved. Index *
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* 1 is the next, and so on. When Index 0 is retrieved, the next-available*
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* entry becomes Index 1. The array is circular; when the end is reached, *
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* the indices wrap around to the beginning. *
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* *
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* The class also contains routines to maintain a cumulative response time *
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* for this queue. It's up to the caller to call Add_Delay() whenever *
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* it detects that an outgoing message has been ACK'd; this class adds *
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* that delay into a computed average delay over the last few message *
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* delays. *
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* *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#ifndef COMQUEUE_H
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#define COMQUEUE_H
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/*---------------------------------------------------------------------------
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This is one output queue entry
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---------------------------------------------------------------------------*/
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typedef struct {
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unsigned int IsActive : 1; // 1 = this entry is ready to be processed
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unsigned int IsACK : 1; // 1 = ACK received for this packet
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unsigned long FirstTime; // time this packet was first sent
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unsigned long LastTime; // time this packet was last sent
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unsigned long SendCount; // # of times this packet has been sent
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int BufLen; // size of the packet stored in this entry
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char *Buffer; // the data packet
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} SendQueueType;
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/*---------------------------------------------------------------------------
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This is one input queue entry
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---------------------------------------------------------------------------*/
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typedef struct {
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unsigned int IsActive : 1; // 1 = this entry is ready to be processed
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unsigned int IsRead : 1; // 1 = caller has read this entry
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unsigned int IsACK : 1; // 1 = ACK sent for this packet
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int BufLen; // size of the packet stored in this entry
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char *Buffer; // the data packet
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} ReceiveQueueType;
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/*
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***************************** Class Declaration *****************************
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*/
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class CommQueueClass
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{
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/*
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---------------------------- Public Interface ----------------------------
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*/
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public:
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/*
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....................... Constructor/Destructor ........................
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*/
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CommQueueClass(int numsend, int numrecieve, int maxlen);
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virtual ~CommQueueClass();
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void Init(void);
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/*
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......................... Send Queue routines .........................
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*/
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int Queue_Send(void *buf, int buflen); // add to Send queue
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int UnQueue_Send(void *buf, int *buflen); // remove from Send queue
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SendQueueType * Next_Send(void); // ptr to next avail entry
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int Num_Send(void) {return (SendCount);} // # entries in queue
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int Max_Send(void) { return (MaxSend);} // max # send queue entries
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SendQueueType * Get_Send(int index); // random access to queue
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unsigned long Send_Total(void) {return (SendTotal);}
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/*
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....................... Receive Queue routines ........................
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*/
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int Queue_Receive(void *buf, int buflen); // add to Receive queue
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int UnQueue_Receive(void *buf, int *buflen); // remove from Receive queue
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ReceiveQueueType * Next_Receive(void); // ptr to next avail entry
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int Num_Receive(void) {return (ReceiveCount);} // # entries in queue
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int Max_Receive(void) { return (MaxReceive); } // max # recv queue entries
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ReceiveQueueType * Get_Receive(int index); // random access to queue
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unsigned long Receive_Total(void) {return (ReceiveTotal);}
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/*
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....................... Response time routines ........................
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*/
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void Add_Delay(unsigned long delay); // accumulates response time
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unsigned long Avg_Response_Time(void); // gets mean response time
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unsigned long Max_Response_Time(void); // gets max response time
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void Reset_Response_Time(void); // resets computations
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/*
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........................ Debug output routines ........................
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*/
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void Configure_Debug(int offset, int size, char **names, int maxnames);
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void Mono_Debug_Print(int refresh = 0);
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void Mono_Debug_Print2(int refresh = 0);
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/*
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--------------------------- Private Interface ----------------------------
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*/
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private:
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/*
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.......................... Limiting variables .........................
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*/
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int MaxSend; // max # send queue entries
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int MaxReceive; // max # receive queue entries
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int MaxPacketSize; // max size of a packet, in bytes
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/*
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....................... Response time variables .......................
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*/
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unsigned long DelaySum; // sum of last 4 delay times
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unsigned long NumDelay; // current # delay times summed
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unsigned long MeanDelay; // current average delay time
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unsigned long MaxDelay; // max delay ever for this queue
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/*
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........................ Send Queue variables .........................
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*/
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SendQueueType * SendQueue; // incoming packets
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int SendCount; // # packets in the queue
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int SendNext; // next entry read from queue
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int SendEmpty; // next empty spot in queue
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unsigned long SendTotal; // total # added to send queue
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/*
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....................... Receive Queue variables .......................
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*/
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ReceiveQueueType * ReceiveQueue; // outgoing packets
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int ReceiveCount; // # packets in the queue
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int ReceiveNext; // next entry read from queue
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int ReceiveEmpty; // next empty spot in queue
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unsigned long ReceiveTotal; // total # added to receive queue
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/*
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......................... Debugging Variables .........................
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*/
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int DebugOffset; // offset into app's packet for ID
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int DebugSize; // size of app's ID
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char **DebugNames; // ptr to array of app-specific names
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int DebugMaxNames; // max # of names in array
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};
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#endif
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/*************************** end of comqueue.h *****************************/
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