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scripts/machine-summary: improve layer_path

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As this can get called lots but the data doesn't change, cache
the responses.  Also return a pathlib.Path, as this is 2022.

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>
This commit is contained in:
Ross Burton
2022-01-26 15:25:38 +00:00
committed by Jon Mason
parent 72bb1adf3f
commit b1e4cff75d
1 changed files with 10 additions and 3 deletions
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scripts/machine-summary.py
+10 -3
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@@ -30,16 +30,23 @@ def safe_patches(patches):
return False
return True
def layer_path(layername, d):
def layer_path(layername: str, d) -> pathlib.Path:
"""
Return the path to the specified layer, or None if the layer isn't present.
"""
import re
if not hasattr(layer_path, "cache"):
# Don't use functools.lru_cache as we don't want d changing to invalidate the cache
layer_path.cache = {}
if layername in layer_path.cache:
return layer_path.cache[layername]
bbpath = d.getVar("BBPATH").split(":")
pattern = d.getVar('BBFILE_PATTERN_' + layername)
for path in reversed(sorted(bbpath)):
if re.match(pattern, path + "/"):
return path
layer_path.cache[layername] = pathlib.Path(path)
return layer_path.cache[layername]
return None
def extract_patch_info(src_uri, d):