[Misc] Remove unused vllm/block.py (#11336)

vllm/block.py

-"""Token blocks."""
-from typing import TYPE_CHECKING, Iterator, List, Optional
-
-from vllm.utils import Device
-
-DEFAULT_LAST_ACCESSED_TIME: float = -1
-
-
-class PhysicalTokenBlock:
-    """Represents the state of a block in the KV cache."""
-
-    def __init__(
-        self,
-        device: Device,
-        block_number: int,
-        block_size: int,
-        block_hash: int,
-        num_hashed_tokens: int,
-    ) -> None:
-        self.device = device
-        self.block_number = block_number
-        self.block_size = block_size
-        self.block_hash = block_hash
-        self.num_hashed_tokens = num_hashed_tokens
-
-        self.ref_count = 0
-        self.last_accessed = DEFAULT_LAST_ACCESSED_TIME
-
-        self.computed = False
-
-    def __repr__(self) -> str:
-        return (f'PhysicalTokenBlock(device={self.device}, '
-                f'block_number={self.block_number}, '
-                f'num_hashed_tokens={self.num_hashed_tokens}, '
-                f'ref_count={self.ref_count}, '
-                f'last_accessed={self.last_accessed}, '
-                f'computed={self.computed})')
-
-
-class BlockTable:
-    """Holds a list of blocks with caching of their associated block_ids 
-    """
-
-    def __init__(self, blocks: Optional[List[PhysicalTokenBlock]] = None):
-        self._blocks: List[PhysicalTokenBlock] = []
-        self._block_ids: List[int] = []
-
-        if blocks is not None:
-            for block in blocks:
-                self.append(block)
-
-    def append(self, block: PhysicalTokenBlock):
-        self._blocks.append(block)
-        self._block_ids.append(block.block_number)
-
-    def __len__(self) -> int:
-        return len(self._blocks)
-
-    def __getitem__(self, key):
-        return self._blocks[key]
-
-    if TYPE_CHECKING:
-
-        def __iter__(self) -> Iterator[PhysicalTokenBlock]:
-            raise RuntimeError("Method should be automatically generated")
-
-    def __setitem__(self, key, value):
-        if isinstance(key, slice):
-            blocks = value
-            self._blocks[key] = blocks
-            self._block_ids[key] = [b.block_number for b in blocks]
-        else:
-            block = value
-            self._blocks[key] = block
-            self._block_ids[key] = block.block_number
-
-    def reset(self):
-        self._blocks = []
-        self._block_ids = []
-
-    def copy(self) -> "BlockTable":
-        return BlockTable(self._blocks)
-
-    def list(self) -> List[PhysicalTokenBlock]:
-        return self._blocks
-
-    def ids(self) -> List[int]:
-        return self._block_ids

vllm/core/evictor.py

@@ -13,7 +13,7 @@ class EvictionPolicy(enum.Enum):
 
 class Evictor(ABC):
     """The Evictor subclasses should be used by the BlockAllocator class to
-    handle eviction of freed PhysicalTokenBlocks.
+    handle eviction of freed Blocks.
     """
 
     @abstractmethod
@@ -70,7 +70,7 @@ class BlockMetaData:
 
 class LRUEvictor(Evictor):
     """Evicts in a least-recently-used order using the last_accessed timestamp
-    that's recorded in the PhysicalTokenBlock. If there are multiple blocks with
+    that's recorded in the Block. If there are multiple blocks with
     the same last_accessed time, then the one with the largest num_hashed_tokens
     will be evicted. If two blocks each have the lowest last_accessed time and
     highest num_hashed_tokens value, then one will be chose arbitrarily