7903d5b170
* src/macro/macro.yyc
* src/macro/macro.y
* src/macro/macrolex.c
* src/rtl/gtwvt/gtwvt.h
* doc/en-EN/hb_apigt.txt
* doc/en-EN/hb_api.txt
* doc/en-EN/hb_vm.txt
* doc/en-EN/hb_apiln.txt
* doc/en-EN/hb_macro.txt
* doc/en-EN/hb_apiit.txt
* doc/en-EN/hb_apifs.txt
* doc/codestyl.txt
* include/hbthread.h
* include/hbxvm.h
* include/hbdefs.h
* include/hbvm.h
* include/hbcomp.h
* include/hbcompdf.h
* include/hbwmain.c
* include/hbexpra.c
* include/hbfloat.h
* include/hbapicls.h
* include/hbexprb.c
* contrib/hbtpathy/tpos2.c
* contrib/hbtpathy/tpunix.c
* contrib/hbnf/prtscr.c
* contrib/hbnf/proper.c
* contrib/hbnf/fttext.c
* contrib/hbnf/dispc.c
* contrib/hbnf/ontick.c
* contrib/hbnf/poke.c
* contrib/hbpgsql/postgres.c
* contrib/rddads/rddads.h
* contrib/hbmisc/strfmt.c
* contrib/hbmisc/ffind.c
* contrib/hbwin/wapi_winbase.c
* contrib/hbwin/axcore.c
* contrib/hbwin/win_dll.c
* examples/hbdoc/examples/core_es/hb_vm.txt
* examples/hbdoc/examples/core_es/hb_apiln.txt
* examples/rddado/adordd.prg
* BOOL -> HB_BOOL
* TRUE -> HB_TRUE
* FALSE -> HB_FALSE
; Final touches after verification of whole codebase.
GTWVG still needs changes.
! Fixed FT_FBOF() returning random value after FT_USE().
! Fixed some bool values stored in int types.
144 lines
2.9 KiB
C
144 lines
2.9 KiB
C
/*
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* $Id$
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*/
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/*
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* File......: ontick.c
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* Author....: Ted Means
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* CIS ID....: 73067,3332
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*
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* This function is an original work by Ted Means and is placed in the
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* public domain.
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*
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* Modification history:
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* ---------------------
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*
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* Rev 1.0 01 Jan 1995 03:01:00 TED
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* Initial release
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*/
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/* $DOC$
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* $FUNCNAME$
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* FT_OnTick()
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* $CATEGORY$
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* Event
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* $ONELINER$
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* Evaluate a designated code block at a designated interval.
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* $SYNTAX$
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* FT_OnTick( bCode, nInterval )
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* $ARGUMENTS$
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* <bCode> is the code block to evaluate.
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* <nInterval> is the number of clock ticks to wait between
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* evaluations of the code block.
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* $RETURNS$
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* NIL
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* $DESCRIPTION$
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* This function effectively allows you to run tasks in the background
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* by transparently and periodically calling a designated routine.
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*
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* To halt the execution of the background function, call FT_OnTick()
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* with no arguments.
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*
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* This function makes heavy use of several undocumented internal
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* routines. If this fact makes you uncomfortable then don't use
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* this function, you quivering sack of cowardly slime.
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* $EXAMPLES$
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*
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* // Set up a self-updating on-screen clock
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*
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* FT_OnTick( "CLOCK", 9 )
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*
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* procedure Clock
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*
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* local nRow := Row()
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* local nCol := Col()
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*
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* @ 0, 0 say Time()
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*
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* SetPos( nRow, nCol )
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*
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* return
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*
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* $SEEALSO$
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* $END$
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*/
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#include "hbapi.h"
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#include "hbapiitm.h"
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#include "cpmi.h"
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typedef union
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{
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long far * Address;
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struct
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{
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unsigned int Offset;
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unsigned int Segment;
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} Pointer;
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} LONGPTR;
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void cdecl _evLow( unsigned int, void *, unsigned int );
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static long far Ticks = 0;
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static long far Interval = 1;
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static PHB_ITEM far codeBlock;
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static char inProgress = 0;
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static void cdecl TickTock( void )
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{
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auto unsigned int ProtMode = cpmiIsProtected();
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auto LONGPTR Timer;
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auto HB_EVALINFO eval;
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if ( inProgress ) return;
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inProgress = 1;
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if ( ProtMode )
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{
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Timer.Pointer.Segment = cpmiProtectedPtr( ( long * ) ( 0x0000046C ), sizeof( long ) );
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Timer.Pointer.Offset = 0;
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if ( Timer.Pointer.Segment == 0 ) goto Exit;
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}
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else
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Timer.Address = ( long * ) ( 0x0000046C );
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if ( *Timer.Address >= ( Ticks + Interval ) ||
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( *Timer.Address < Ticks ) )
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{
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Ticks = *Timer.Address;
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hb_evalNew( &eval, codeBlock );
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hb_itemRelease( hb_evalLaunch( &eval ) );
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}
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if ( ProtMode ) cpmiFreeSelector( Timer.Pointer.Segment );
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Exit: inProgress = 0;
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return;
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}
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CLIPPER FT_OnTick( void )
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{
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if ( hb_itemType( codeBlock ) == BLOCK ) hb_itemRelease( codeBlock );
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codeBlock = hb_itemParam( 1 );
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if ( hb_itemType( codeBlock ) == BLOCK )
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{
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Interval = hb_parnl( 2 );
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_evLow( 5, TickTock, HB_TRUE );
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}
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else
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_evLow( 5, TickTock, HB_FALSE );
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return;
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}
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