| Methods Summary |
|---|
| public static void | access_test()
Test2 a0 = new Test2(6767676);
Test2 a1 = new Test2(33);
Test2 a2 = new Test2(998);
Test2 a3 = new Test2(3333);
Test2 a4 = new Test2(12348765);
Test2 a5 = new Test2(9999);
Test2 a6 = new Test2(66665);
Test2 a7 = new Test2(1234);
Test2 a8 = new Test2(987654);
Test2 a9 = new Test2(3121219);
Object o1,o2,o3,o4,o5,o6,o7,o8,o9,o0;
long time = System.currentTimeMillis();
for (int i = 0; i < 1000000; i++)
{
o1 = plain_access(a0);
o2 = plain_access(a1);
o3 = plain_access(a2);
o4 = plain_access(a3);
o5 = plain_access(a4);
o6 = plain_access(a5);
o7 = plain_access(a6);
o8 = plain_access(a7);
o9 = plain_access(a8);
o0 = plain_access(a9);
}
System.out.println("plain access took " + (System.currentTimeMillis()-time));
time = System.currentTimeMillis();
for (int i = 0; i < 1000000; i++)
{
o1 = cached_access(a0);
o2 = cached_access(a1);
o3 = cached_access(a2);
o4 = cached_access(a3);
o5 = cached_access(a4);
o6 = cached_access(a5);
o7 = cached_access(a6);
o8 = cached_access(a7);
o9 = cached_access(a8);
o0 = cached_access(a9);
}
System.out.println("cached access took " + (System.currentTimeMillis()-time));
|
| public static java.lang.Object | cached_access(tuning.cache.Test2 i)
int access = i.cacheRef;
Object o;
if (access == -1)
{
o = hash.get(i);
//Wind round to the start of the cache if full up
if (freeIndex >= cache_keys.length)
freeIndex = 0;
//Get the next index;
access = i.cacheRef = freeIndex++;
//If there was already something there, set it uncached
if (cache_keys[access] != null)
{
System.out.println("Collsion between " + cache_keys[access] + " and " + i);
cache_keys[access].cacheRef = -1;
}
//And cache our new value.
cache_keys[access] = i;
cache_values[access] = o;
return o;
}
else
{
return cache_values[access];
}
|
| public boolean | equals(java.lang.Object obj)
if ((obj != null) && (obj instanceof Test2))
return value == ((Test2) obj).value;
else
return false;
|
| public int | hashCode()
return value;
|
| public static void | main(java.lang.String[] args)
try
{
System.out.println("started populating");
populate();
System.out.println("started accessing");
access_test();
}
catch(Exception e){e.printStackTrace();}
|
| public static java.lang.Object | plain_access(tuning.cache.Test2 i)
return hash.get(i);
|
| public static void | populate()
for (int i = 0; i < 100000; i++)
hash.put(new Test2(i), new Integer(i+5));
|
