Q35904: How to Call OS/2 Function DosAllocHugeSeg and DosGetHugeShift

Article: Q35904
Product(s): See article
Version(s): 6.00 6.00b 7.00
Operating System(s): OS/2
Keyword(s): ENDUSER | | mspl13_basic
Last Modified: 1-FEB-1990

Below is a sample program that makes a call to the MS OS/2 functions
DosAlocHugeSeg, DosGetHugeShift, DosReallocHuge, and DosMemAvail. This
program can be compiled in Microsoft BASIC Compiler Versions 6.00 and
6.00b for MS OS/2 and Microsoft BASIC Professional Development System
(PDS) Version 7.00 for MS OS/2.

The following is code example:

DECLARE FUNCTION DosAllocHuge%(_
                 BYVAL P1 AS INTEGER,_
                 BYVAL P2 AS INTEGER,_
                 SEG P3 AS INTEGER,_
                 BYVAL P4 AS INTEGER,_
                 BYVAL P5 AS INTEGER)

DECLARE FUNCTION DosGetHugeShift%(SEG P1 AS INTEGER)

DECLARE FUNCTION DosReallocHuge%(_
                 BYVAL P1 AS INTEGER,_
                 BYVAL P2 AS INTEGER,_
                 BYVAL P3 AS INTEGER)

DECLARE FUNCTION DosMemAvail%(SEG P1 AS LONG)

DEFINT A-Z
DIM mem AS LONG

CLS
MEM=0
x=DosMemAvail%(mem)

IF (x) THEN
   PRINT "An error occurred.  The number is : ";x
ELSE
   PRINT "The amount of available memory is : ";mem
END IF

INPUT "Enter the number of Segments : ";NUMSEG

SIZE=0
SELECTOR=0
SHAREID=0
input "Enter the Number of MAXSEG for REALLOCATION: ";MAXNUMSEG
print
x=DosAllocHuge%(numseg,size,selector,shareid,maxnumseg)

IF (x) THEN
   Print "An error occurred.  The number is : ";x
ELSE
   PRINT "The selector is : ";selector
END IF
SHIFTCOUNT=0

x=DosGetHugeShift%(shiftcount)

IF (x) THEN
   Print "An error occurred.  The number is : ";x
ELSE
   PRINT "The Huge Shift Count is : ";shiftcount
END IF

print
INPUT "Enter the number of segments in reallocation : ";NUMSEG
SIZE=0
print
x=DosReAllocHuge%(numseg,size,selector)

IF (x) THEN
   Print "An error occurred.  The number is : ";x
ELSE
   PRINT "Memory was been reallocated"
END IF

end

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