cache_memory.py

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def add_cache(cache: list[dict], block: int, history: int, miss: int) -> tuple:
    address = block % 4
    if cache[address].get(block):
        cache[address][block] = history
        return cache, miss
    if len(cache[address]) < 2:
        cache[address][block] = history
        miss += 1
        return cache, miss
    assert len(cache[address]) < 3
    for data in cache[address]:
        # least recently used
        if cache[address][data] == min(cache[address].values()):
            del cache[address][data]
            cache[address][block] = history
            miss += 1
            return cache, miss
 
 
def direct_map_add_cache(cache: list[dict], block: int, history: int, miss: int) -> tuple:
    address = block % 8
    if cache[address].get(block):
        cache[address][block] = history
        return cache, miss
    else:
        cache[address] = {block: history}
        miss += 1
        return cache, miss
 
 
counter = 1
miss = 0
cache = [{}, {}, {}, {}, {}, {}, {}, {}]
for i in ['1', '2', '3', '5', '6', '2', '3', '4', '9', '10', '11', '6', '3', '6', '1', '7', '8', '4', '5', '9', '11',
          '1', '2', '4', '5', '12', '13', '14', '15', '13', '14']:
    cache, miss = direct_map_add_cache(cache, int(i), counter, miss)
    counter += 1
    print(i, cache, miss)
 
counter = 1
miss = 0
cache = [{}, {}, {}, {}]
for i in ['1', '2', '3', '5', '6', '2', '3', '4', '9', '10', '11', '6', '3', '6', '1', '7', '8', '4', '5', '9', '11',
          '1', '2', '4', '5', '12', '13', '14', '15', '13', '14']:
    cache, miss = add_cache(cache, int(i), counter, miss)
    counter += 1
    print(i, cache, miss)