with DOS/4GW? - Open Watcom

DOS Programming Guide
}
int386x( DPMI INT, &regs, &regs, &sregs );
printf( "Largest available block (in bytes): %lu\n",
MemInfo.LargestBlockAvail );
printf( "Maximum unlocked page allocation: %lu\n",
MemInfo.MaxUnlockedPage );
printf( "Pages that can be allocated and locked: "
"%lu\n", MemInfo.LargestLockablePage );
printf( "Total linear address space including "
"allocated pages: %lu\n",
MemInfo.LinAddrSpace );
printf( "Number of free pages available: %lu\n",
MemInfo.NumFreePagesAvail );
printf( "Number of physical pages not in use: %lu\n",
MemInfo.NumPhysicalPagesFree );
printf( "Total physical pages managed by host: %lu\n",
MemInfo.TotalPhysicalPages );
printf( "Free linear address space (pages): %lu\n",
MemInfo.FreeLinAddrSpace );
printf( "Size of paging/file partition (pages): %lu\n",
MemInfo.SizeOfPageFile );
Please refer to the chapter entitled "Interrupt 31H DPMI Functions" on page 67 for more
information on DPMI services.
5.3.2 Getting Free Memory Information under the Phar Lap
386|DOS-Extender
Phar Lap provides memory statistics through 386|DOS-Extender System Call 0x2520. The
following example illustrates how to use this system call from a 32-bit program.
/*
MEMPLS40.C - This is an example of how to get the
amount of physical memory present under Phar Lap
386|DOS-Extender v4.0.
Compile & Link: wcl386 /l=pharlap MEMPLS40
*/
#include
#include
typedef struct {
unsigned data[25];
} pharlap mem status;
24 How do I get information about free memory in the 32-bit environment?