public Cache(int size, int members) {
Test.check(members >= 1, "Cache members must be greater than 0");
Test.check(members <= 3, "Cache members must be less than 4");
cache_bits = (size < 32) ? 5 : Digits.closest_log2(size); // min size 32
cache_size = (1 << cache_bits);
cache_mask = cache_size - 1;
this.members = members;
numgrows = 0;
last_access = numaccess = 0;
possible_bins_count = 0;
numclears = numpartial_clears = 0;
entries = new CacheEntry[cache_size];
for (int i = 0; i < cache_size; i++) {
entries[i] = new CacheEntry();
}
}
/** testbench. do not call */
public static void internal_test() {
Test.start("SetEnumeration");
final BDDUniverse u = new BDDUniverse(dom);
final Set set = u.createEmptySet();
final int[] val = new int[dom.length];
int real_size = 0;
for (int i = 0; i < 200; i++) {
for (int j = 0; j < dom.length; j++) {
val[j] = (int) (Math.random() * dom[j]);
}
if (set.insert(val)) {
real_size++;
}
}
Test.checkEquality(
real_size, set.cardinality(), "# of elemnets inserted equals set cardinality");
final Set set2 = set.copy();
final SetEnumeration se = set.elements();
int had = 0;
while (se.hasMoreElements()) {
had++;
final int[] v = se.nextElement();
Test.check(set2.remove(v), " returned element really in set");
}
Test.checkEquality(
real_size, set.cardinality(), "# of elemnets inserted still equals set cardinality");
Test.checkEquality(had, set.cardinality(), "right number of elements in set");
Test.checkEquality(set2.cardinality(), 0, "right number of elements in set (Same as above)");
set2.free();
set.free();
se.free();
Test.end();
}
/** testbench. do not call */
public static void internal_test() {
Test.start("Cache");
// 3 elements
Cache cache = new Cache(200, 3);
cache.insert3((byte) 2, 1, 2, 3);
Test.check(cache.lookup3((byte) 2, 1, 2) == 3, "lookup 3");
cache.insert3((byte) 2, 1, 2, 5);
Test.check(cache.lookup3((byte) 2, 1, 2) == 5, "lookup overwritten with 5");
Test.check(cache.lookup3((byte) 1, 1, 2) == -1, "non-existing entry 1");
Test.check(cache.lookup3((byte) 2, 2, 2) == -1, "non-existing entry 2");
Test.check(cache.lookup3((byte) 2, 2, 1) == -1, "non-existing entry 3");
// 2 elements
cache = new Cache(200, 2);
cache.insert2((byte) 2, 1, 3);
Test.check(cache.lookup2((byte) 2, 1) == 3, "lookup 3");
cache.insert2((byte) 2, 1, 5);
Test.check(cache.lookup2((byte) 2, 1) == 5, "lookup overwritten with 5");
Test.check(cache.lookup2((byte) 1, 1) == -1, "non-existing entry 1");
Test.check(cache.lookup2((byte) 2, 2) == -1, "non-existing entry 2");
// 1 element
cache = new Cache(200, 1);
cache.insert1(1, 3);
Test.check(cache.lookup1(1) == 3, "lookup 3");
cache.insert1(1, 5);
Test.check(cache.lookup1(1) == 5, "lookup overwritten with 5");
Test.check(cache.lookup1(2) == -1, "non-existing entry 1");
Test.check(cache.lookup1(3) == -1, "non-existing entry 2");
Test.end();
}