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bitbake: data_smart: Small cache reuse optimization

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Currently the expand cache doesn't work for "parser" return types, which
is the main type used by the build_dependencies() call that we spend most
of the time in when parsing. Tweak the code to cache the unexpanded value
in the expand cache and hence allow reuse of the parser in other fast path
cases for small speed gains.

(Bitbake rev: b4a8e5071dbcba2217b79e83e08b275ffcbc0eef)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Richard Purdie 2022-11-28 23:42:30 +00:00
parent 70a7e7337b
commit 43ef392dc2
1 changed files with 7 additions and 3 deletions
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10
bitbake/lib/bb/data_smart.py
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@ -92,10 +92,11 @@ def infer_caller_details(loginfo, parent = False, varval = True):
loginfo['func'] = func
class VariableParse:
def __init__(self, varname, d, val = None):
def __init__(self, varname, d, unexpanded_value = None, val = None):
self.varname = varname
self.d = d
self.value = val
self.unexpanded_value = unexpanded_value
self.references = set()
self.execs = set()
@ -447,9 +448,9 @@ class DataSmart(MutableMapping):
def expandWithRefs(self, s, varname):
if not isinstance(s, str): # sanity check
return VariableParse(varname, self, s)
return VariableParse(varname, self, s, s)
varparse = VariableParse(varname, self)
varparse = VariableParse(varname, self, s)
while s.find('${') != -1:
olds = s
@ -775,6 +776,9 @@ class DataSmart(MutableMapping):
return None
cachename = var + "[" + flag + "]"
if not expand and retparser and cachename in self.expand_cache:
return self.expand_cache[cachename].unexpanded_value, self.expand_cache[cachename]
if expand and cachename in self.expand_cache:
return self.expand_cache[cachename].value