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Cache Node signatures on the context level

This commit is contained in:
Thomas Nagy 2016-02-15 23:04:30 +01:00
parent c4bfce0fe7
commit 31381f9b63
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GPG Key ID: 67A565EDFDF90E64
1 changed files with 9 additions and 2 deletions
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11
waflib/Node.py
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@ -809,7 +809,6 @@ class Node(object):
def exists(self):
return os.path.exists(self.abspath())
@Utils.run_once
def get_bld_sig(self):
"""
Node signature. If there is a build directory or and the file is there,
@ -817,7 +816,15 @@ class Node(object):
signature is calculated automatically.
"""
# previous behaviour can be set by returning self.ctx.node_sigs[self] when a build node
return Utils.h_file(self.abspath())
try:
cache = self.ctx.cache_sig
except AttributeError:
cache = self.ctx.cache_sig = {}
try:
ret = cache[self]
except KeyError:
ret = cache[self] = Utils.h_file(self.abspath())
return ret
# --------------------------------------------
# TODO waf 2.0, remove the sig and cache_sig attributes