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package driver;
import java.util.ArrayList;
import fileIO.ReadWrite;
public class ClearRam {
public static void main(String[] args){
for(int i=0; i<2; i++){
try {
System.gc();
attempt();
} catch(final java.lang.OutOfMemoryError e) {
// e.printStackTrace();
System.err.println("Out of memory at "+((current*8)/(1<<20))+" MB");
}
}
}
public static void attempt(){
ArrayList<long[]> list=new ArrayList<long[]>(8000);
current=0;
while(true){
long[] array=null;
array=new long[1<<20];
list.add(array);
// for(int i=0; i<array.length; i++){
// array[i]=current;
// current++;
// }
current+=array.length;
}
}
public static void writeJunk(int megs){
try {
long[] old=(long[]) ReadWrite.readObject("JUNK"+megs+".long", false);
for(int i=1; i<old.length; i++){
assert(old[i]==old[i-1]+1);
}
} catch (Exception e) {
}
long[] array=new long[megs*(1<<17)];
long current=System.nanoTime();
for(int i=0; i<array.length; i++){
array[i]=current+i;
}
ReadWrite.write(array, "JUNK"+megs+".long", false);
System.err.println("Wrote "+((8*array.length)/(1024000))+" MB junk");
}
private static long current=0;
}
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