105 lines
5.1 KiB
C
105 lines
5.1 KiB
C
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/***************************************************************************
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Name : COMDEVI.H
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Comment : Controls Comm interface used by Fax Modem Driver. There are
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4 choices.
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(a) If UCOM is defined, it uses the WIN16 Comm API as exported
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by USER.EXE (though eventually it gets to COMM.DRV)
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(b) If UCOM is not defined and VC is defined, it uses the
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COMM.DRV-like interface exported by DLLSCHED.DLL (which
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merely serves as a front for VCOMM.386)
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(c) If neither UCOM nor VC are defined, it uses Win3.1 COMM.DRV
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export directly.
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(d) If WIN32 is defined (neither UCOM or VC should be defined at
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the same time), it uses the WIN32 Comm API
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Functions: (see Prototypes just below)
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Revision Log
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Date Name Description
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-------- ----- ---------------------------------------------------------
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***************************************************************************/
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#pragma optimize("e", off) // "e" is buggy
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// must be 8K or less, dues to DEADCOMMTIMEOUT. See fcom.c!!
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// maybe not...
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// #define COM_INBUFSIZE 16384
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// #define COM_OUTBUFSIZE 16384
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#define COM_INBUFSIZE 4096
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#define COM_OUTBUFSIZE 4096
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// #define COM_INBUFSIZE 256
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// #define COM_OUTBUFSIZE 256
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// #define COM_INBUFSIZE 1024
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// #define COM_OUTBUFSIZE 1024
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#define BETWEENCALL_THRESH 50
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#ifdef DEBUG
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# define CALLTHRESH_CONST 50
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# define CALLTHRESH_PERBYTE 1
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# define BEFORECALL static DWORD t1, t2; t1=GetTickCount();
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# define INTERCALL(sz)
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/*
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# define INTERCALL(sz) if((t1-t2) > BETWEENCALL_THRESH)\
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ERRMSG(("!!!Inter API %s delay %ld!!!\r\n", (LPSTR)(sz), (t1-t2)));
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*/
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# define AFTERCALL(sz,n) \
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t2=GetTickCount();\
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if((t2-t1) > (CALLTHRESH_CONST+((DWORD)n)*CALLTHRESH_PERBYTE)) \
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ERRMSG(("!!!API %s took %ld!!!\r\n", (LPSTR)(sz), (t2-t1)));
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#else
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# define BEFORECALL
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# define AFTERCALL
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# define INTERCALL
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#endif
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#if INVALID_HANDLE_VALUE >= 0 // must be <= 0
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#error INVALID_HANDLE_VALUE is >=0. This won't work....
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#endif
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#define My2ndOpenComm(sz, ph) \
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{ BEFORECALL; \
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if((*((LPHANDLE)(ph)) = CreateFile((LPCTSTR)(sz), GENERIC_READ|GENERIC_WRITE, \
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0, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL)) != INVALID_HANDLE_VALUE) \
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{ \
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if(!SetupComm(*((LPHANDLE)(ph)), COM_INBUFSIZE, COM_OUTBUFSIZE)) \
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{ \
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CloseHandle(*((LPHANDLE)(ph))); \
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*((LPHANDLE)(ph)) = INVALID_HANDLE_VALUE; \
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} \
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} \
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AFTERCALL("Open", 0); \
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} \
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#define My2ndCloseComm(h, pn) { BEFORECALL; *(pn) = (!CloseHandle((HANDLE)h)); AFTERCALL("Close",0); }
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#define MySetCommState(h,pdcb) (!SetCommState((HANDLE)(h), (pdcb)))
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#define MyGetCommState(h,pdcb) (!GetCommState((HANDLE)(h), (pdcb)))
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#define OVL_CLEAR(lpovl) \
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{ \
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if (lpovl) \
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{ \
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(lpovl)->Internal = (lpovl)->InternalHigh=\
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(lpovl)->Offset = (lpovl)->OffsetHigh=0; \
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if ((lpovl)->hEvent) ResetEvent((lpovl)->hEvent); \
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} \
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}
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#define MySetCommMask(h,mask) (!SetCommMask((HANDLE)(h), (mask)))
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#define MyFlushComm(h,q) (!PurgeComm((HANDLE)h, ((q)==0 ? PURGE_TXCLEAR : PURGE_RXCLEAR)))
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#define MySetXON(h) (!EscapeCommFunction((HANDLE)(h), SETXON))
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