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can: cache DBC parsing to speed up car interface tests #2888

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Merged
merged 6 commits into from
Nov 30, 2025
Merged

can: cache DBC parsing to speed up car interface tests #2888

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02c0e1e
can: cache DBC parsing to speed up car interface tests
logesh45 Nov 7, 2025
9bb91d7
Merge branch 'master' into perf/cache-dbc-parsing
logesh45 Nov 9, 2025
6d30886
can: refactor DBC caching to use explicit factory function
logesh45 Nov 9, 2025
7db1996
Merge remote-tracking branch 'upstream/master' into perf/cache-dbc-pa…
sshane Nov 30, 2025
29a8f76
revert
sshane Nov 30, 2025
d35e5ca
simple cache dbc
sshane Nov 30, 2025
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11 changes: 3 additions & 8 deletions opendbc/can/dbc.py
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Original file line number Diff line number Diff line change
@@ -1,7 +1,8 @@
import re
import os
from dataclasses import dataclass
from collections.abc import Callable
from dataclasses import dataclass
from functools import cache

from opendbc import DBC_PATH

Expand Down Expand Up @@ -73,14 +74,8 @@ class Val:
VAL_SPLIT_RE = re.compile(r'["]+')


@dataclass
@cache
class DBC:
name: str
msgs: dict[int, Msg]
addr_to_msg: dict[int, Msg]
name_to_msg: dict[str, Msg]
vals: list[Val]

def __init__(self, name: str):
dbc_path = name
if not os.path.exists(dbc_path):
Expand Down