minilib/arena.c


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#include "arena.h"
#include "minilib.h"
#include "io.h"

static char p[ARENA_SIZE];
static char *ptr = p;

void *allocate( int size )
{
	char *m;
		
	if( ptr - p + size < ARENA_SIZE ) {
		m = ptr;
		ptr = ptr + size;
		return m;
	}
	
	print( "OUT OF MEMORY" );

	halt( );
}

void deallocate( void **p )
{
	if( *p == 0 ) {
		print( "DEALLOCATING ALREADY FREED POINTER" );
		halt( );
	}
	
	*p = 0;
}