mirror of
https://gitee.com/js-yhsec/energy_storage.git
synced 2026-05-28 03:09:24 +08:00
84 lines
3.3 KiB
C++
84 lines
3.3 KiB
C++
/***************************************************************************
|
|
rldataacquisition.h - description
|
|
-------------------
|
|
begin : Mon Sep 03 2007
|
|
copyright : (C) 2007 by pvbrowser
|
|
email : lehrig@t-online.de
|
|
***************************************************************************/
|
|
|
|
/***************************************************************************
|
|
* *
|
|
* This library is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU LESSER GENERAL PUBLIC LICENSE as *
|
|
* published by the Free Software Foundation *
|
|
* *
|
|
***************************************************************************/
|
|
#ifndef _RL_DAQ_H_
|
|
#define _RL_DAQ_H_
|
|
|
|
#include "rldefine.h"
|
|
#include "rlmailbox.h"
|
|
#include "rlsharedmemory.h"
|
|
|
|
/*! <pre>
|
|
This class is for data acquisition within pvserver according to the pvbrowser principle.
|
|
It communicates by the means of a shared memory and a mailbox.
|
|
Use it together with rlDataAcquisitionProvider.
|
|
</pre> */
|
|
class rlDataAcquisition
|
|
{
|
|
public:
|
|
// shared memory header
|
|
typedef struct
|
|
{
|
|
char ident[4]; // must be "daq"
|
|
int maxItemNameLength; // maximum length of an item name
|
|
int maxNameLength; // maximum length of the item value
|
|
int numItems; // number of items in shared memory
|
|
int readErrorCount; // 0...65536 incremented by each read error
|
|
int writeErrorCount; // 0...65536 incremented by each write error
|
|
int lifeCounter; // 0...65536 incremented on each cycle
|
|
int spare[7]; // for future use
|
|
char cspare[32]; // for future use
|
|
}SHM_HEADER;
|
|
|
|
enum DAQ_ENUM
|
|
{
|
|
DAQ_ERROR = 256*256*128
|
|
};
|
|
|
|
#ifdef RLWIN32
|
|
rlDataAcquisition(const char *mailbox="c:\\automation\\mbx\\dataacquisition.mbx", const char *shared_memory="c:\\automation\\shm\\dataacquisition.shm", long shared_memory_size=65536);
|
|
#else
|
|
rlDataAcquisition(const char *mailbox="/srv/automation/mbx/dataacquisition.mbx", const char *shared_memory="/srv/automation/shm/dataacquisition.shm", long shared_memory_size=65536);
|
|
#endif
|
|
virtual ~rlDataAcquisition();
|
|
const char *stringValue(const char *variable);
|
|
int intValue(const char *variable);
|
|
float floatValue(const char *variable);
|
|
int writeStringValue(const char *variable, const char *value);
|
|
int writeIntValue(const char *variable, int value);
|
|
int writeFloatValue(const char *variable, float value);
|
|
/*! Incremented by the daemon on each read error */
|
|
int readErrorCount();
|
|
/*! Incremented by the daemon on each write error */
|
|
int writeErrorCount();
|
|
/*! Incremented by the daemon in each cycle */
|
|
int lifeCounter();
|
|
const char *firstVariable();
|
|
const char *nextVariable();
|
|
int shmStatus(); // 0 if shared memory is ok | DAQ_ERROR if shared memory is not ok
|
|
int shmKey(); // key of shared memory
|
|
int shmId(); // id of shared memory
|
|
|
|
private:
|
|
SHM_HEADER *shmheader;
|
|
const char *shmvalues;
|
|
rlMailbox *mbx;
|
|
rlSharedMemory *shm;
|
|
int iCurrent;
|
|
};
|
|
|
|
#endif
|
|
|