www.pudn.com > fxvmm210.zip > EXAMPLE1.C

/* 
    Example 1 
 
    This example just shows you how to allocate, reallocate and free 
    thru the FXúVM Manager's API. 
 
    WARNING: If you are running this example from within the Borland IDE 
    your computer _might_ crash. (the IDE does strange stuff with intr's) 
 
*/ 
 
#include  
#include  
#include  
 
#include "..\source.c\_fxapi.h" 
 
#define  BIGBUFFER 8096000L /* our _eight_ megabyte buffer */ 
 
//ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ[ Data ]ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ 
 
static char *windows[] = 
{ 
  "DOS", 
  "Windows/386 2.x", 
  "Windows 3.x in Enhanced mode", 
  "Windows 4.x in Enhanced mode", 
  "Windows/386 2.x", 
  "Windows 3.1+ in Standard mode", 
  "Windows 3.0 in Standard mode" 
  "Windows95" 
  "Windows NT" 
}; 
 
static char *protmode[] = 
{ 
  "Real Mode (V86)", 
  "Protected Mode", 
  "Protected mode via MS-Windows Enhanced" 
}; 
 
static char *cputypes[] = 
{ 
  "8086"  , 
  "80186" , 
  "80286" , 
  "80386" , 
  "80486" , 
  "80586" 
}; 
 
static char *fputypes[] = 
{ 
  "None"    , 
  "Unknown" , 
  "80287"   , 
  "80387" 
}; 
 
static char *dosextender[] = 
{ 
  "None (DOS RealMode)", 
  "ERGO OS286", 
  "ERGO OS386", 
  "PHARLAP|386" 
}; 
 
//ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ[ Code ]ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ 
 
int main( void ) 
{ 
    fxvmm_buffertype *bigbuf_handle = NULL ; 
 
    if( !_fxvmm_open_api() ) 
     { 
       fprintf( stderr , "\n\rFatal: Failed to initialize FXúVM Manager - aborting"); 
       exit( -1 ); 
     } 
 
    fprintf( stderr , FXVMM_BANNER "\n\r" , _fxvmm_vermajor() , _fxvmm_verminor() ); 
 
    switch( fxvmm_cputype ) 
     { 
       case FXVMM_8086_CPU   : 
       case FXVMM_80186_CPU  : 
       case FXVMM_80286_CPU  : 
                               fprintf( stderr , "\n\rSorry FXVMM requires a 386+ processor to run"); 
                               exit( -1 ); 
     } 
 
 
    fprintf( stderr , "\n\rþ Detected CPU : %s", cputypes[fxvmm_cputype]        ); 
    fprintf( stderr , "\n\rþ Detected FPU : %s", fputypes[fxvmm_fputype]        ); 
    fprintf( stderr , "\n\rþ Running in   : %s", protmode[fxvmm_protmode]       ); 
    fprintf( stderr , "\n\rþ Running On   : %s", windows[fxvmm_windows]         ); 
    fprintf( stderr , "\n\rþ DOS Extender : %s\n\r", dosextender[fxvmm_dosextender] ); 
 
    /* setup memory allocation strategy */ 
 
    _fxvmm_set_strategy( fxvmm_strat_xms_handle , FXVMM_PRIORITY1 ); 
    _fxvmm_set_strategy( fxvmm_strat_ems_handle , FXVMM_PRIORITY2 ); 
    _fxvmm_set_strategy( fxvmm_strat_vrt_handle , FXVMM_PRIORITY3 ); 
    _fxvmm_set_strategy( fxvmm_strat_dos_handle , FXVMM_PRIORITY4 ); 
 
    /* Allocate our memory pool */ 
 
    if( ( bigbuf_handle = _fxvmm_alloc( (long)BIGBUFFER ) ) == NULL ) 
            fprintf( stderr, "\n\rWarning: Failed to allocate a block of %lu bytes !" , (long)BIGBUFFER ); 
 
    fprintf( stderr , "\n\rJust allocated 8 Megabytes of free space ..."); 
    fprintf( stderr , "\n\rNow hit any key to reallocate it to 16 Megabytes, or [ESC] to abort"); 
 
    if( getch() == 0x1b ) 
     { 
       if( !_fxvmm_close_api() ) 
           fprintf( stderr , "\n\r*Warning* - Memory on this system has been corrupted !"); 
 
       exit( 0 ); 
     } 
 
    /* Re-allocate our memory pool */ 
 
    if( ( bigbuf_handle = _fxvmm_realloc( bigbuf_handle, (long)BIGBUFFER*2L ) ) == NULL ) 
            fprintf( stderr, "\n\rWarning: Failed to allocate a block of %lu bytes !" , (long)BIGBUFFER*2L ); 
 
    fprintf( stderr , "\n\rJust allocated 16 Megabytes of free space ..."); 
    fprintf( stderr , "\n\rNow hit any key to reallocate it to 1024 *bytes*"); 
 
    getch(); 
 
    /* Re-allocate our memory pool */ 
 
    if( ( bigbuf_handle = _fxvmm_realloc( bigbuf_handle, 1024L ) ) == NULL ) 
            fprintf( stderr, "\n\rWarning: Failed to allocate a block of %lu bytes !" , 1024L ); 
 
    /* Free our memory pool */ 
 
    _fxvmm_free( bigbuf_handle ); 
 
    if( !_fxvmm_close_api() ) 
       fprintf( stderr , "\n\r*Warning* - Memory on this system has been corrupted !"); 
    else 
       fprintf( stderr , "\n\rFXúVM Manager closed down properly\n\r"); 
 
 return( 0 ); 
 
}