57 lines
1.4 KiB
Python
57 lines
1.4 KiB
Python
from typing import List
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from cacheflow.utils import Device
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BLANK_TOKEN_ID = -1
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class LogicalTokenBlock:
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def __init__(
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self,
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block_number: int,
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block_size: int,
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) -> None:
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self.block_number = block_number
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self.block_size = block_size
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self.token_ids = [BLANK_TOKEN_ID] * block_size
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self.num_tokens = 0
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def is_empty(self) -> bool:
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return self.num_tokens == 0
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def get_num_empty_slots(self) -> int:
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return self.block_size - self.num_tokens
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def is_full(self) -> bool:
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return self.num_tokens == self.block_size
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def append(self, token_ids: List[int]) -> None:
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assert len(token_ids) <= self.get_num_empty_slots()
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self.token_ids[self.num_tokens:self.num_tokens + len(token_ids)] = token_ids
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self.num_tokens += len(token_ids)
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def get_token_ids(self) -> List[int]:
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return self.token_ids[:self.num_tokens]
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class PhysicalTokenBlock:
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def __init__(
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self,
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device: Device,
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block_number: int,
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block_size: int,
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) -> None:
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self.device = device
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self.block_number = block_number
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self.block_size = block_size
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self.ref_count = 0
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def __repr__(self) -> str:
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return (f'PhysicalTokenBlock(device={self.device}, '
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f'block_number={self.block_number}, '
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f'ref_count={self.ref_count})')
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