From: Richard Purdie <richard.pur...@linuxfoundation.org>

With hashequiv the get_taskhash function is called much more regularly
and contains expensive operations. This these don't change based upon
hash in a given build, improve the caching within the function to
reduce overhead.

(From OE-Core rev: de98cfe3cde4b8d5f4b163b5fba3f129651ef06a)

Signed-off-by: Richard Purdie <richard.pur...@linuxfoundation.org>
Signed-off-by: Mark Hatle <mark.ha...@kernel.crashing.org>
---
 meta/lib/oe/sstatesig.py | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/meta/lib/oe/sstatesig.py b/meta/lib/oe/sstatesig.py
index b2316b12b8..f1abff0c45 100644
--- a/meta/lib/oe/sstatesig.py
+++ b/meta/lib/oe/sstatesig.py
@@ -151,6 +151,13 @@ class SignatureGeneratorOEBasicHashMixIn(object):
 
     def get_taskhash(self, tid, deps, dataCache):
         h = super(bb.siggen.SignatureGeneratorBasicHash, 
self).get_taskhash(tid, deps, dataCache)
+        if tid in self.lockedhashes:
+            if self.lockedhashes[tid]:
+                return self.lockedhashes[tid]
+            else:
+                return h
+
+        h = super(bb.siggen.SignatureGeneratorBasicHash, 
self).get_taskhash(tid, deps, dataCache)
 
         (mc, _, task, fn) = bb.runqueue.split_tid_mcfn(tid)
 
@@ -187,17 +194,19 @@ class SignatureGeneratorOEBasicHashMixIn(object):
                                           % (recipename, task, h, h_locked, 
var))
 
                 return h_locked
+
+        self.lockedhashes[tid] = False
         #bb.warn("%s %s %s" % (recipename, task, h))
         return h
 
     def get_unihash(self, tid):
-        if tid in self.lockedhashes:
+        if tid in self.lockedhashes and self.lockedhashes[tid]:
             return self.lockedhashes[tid]
         return super().get_unihash(tid)
 
     def dump_sigtask(self, fn, task, stampbase, runtime):
         tid = fn + ":" + task
-        if tid in self.lockedhashes:
+        if tid in self.lockedhashes and self.lockedhashes[tid]:
             return
         super(bb.siggen.SignatureGeneratorBasicHash, self).dump_sigtask(fn, 
task, stampbase, runtime)
 
-- 
2.17.1

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