BaseTool: Add cache for the result of SkipAutogen.

Add a cache for the value of skip ModuleAutoGen process flag. This cache can improve build performance. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Bob Feng <[email protected]> Cc: Liming Gao <[email protected]> Reviewed-by: Liming Gao <[email protected]>
lersek · Jul 9, 2018 · 18ef4e7 · 18ef4e7
1 parent f7496d7
commit 18ef4e7
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diff --git a/BaseTools/Source/Python/AutoGen/AutoGen.py b/BaseTools/Source/Python/AutoGen/AutoGen.py
@@ -4309,11 +4309,14 @@ def GenModuleHash(self):
     def CanSkipbyHash(self):
         if GlobalData.gUseHashCache:
             return not self.GenModuleHash()
+        return False
 
     ## Decide whether we can skip the ModuleAutoGen process
     #  If any source file is newer than the module than we cannot skip
     #
     def CanSkip(self):
+        if self.MetaFile in GlobalData.gSikpAutoGenCache:
+            return True
         if not os.path.exists(self.GetTimeStampPath()):
             return False
         #last creation time of the module
@@ -4332,6 +4335,7 @@ def CanSkip(self):
                     ModuleAutoGen.TimeDict[source] = os.stat(source)[8]
                 if ModuleAutoGen.TimeDict[source] > DstTimeStamp:
                     return False
+        GlobalData.gSikpAutoGenCache.add(self.MetaFile)
         return True
 
     def GetTimeStampPath(self):

diff --git a/BaseTools/Source/Python/Common/GlobalData.py b/BaseTools/Source/Python/Common/GlobalData.py
@@ -113,3 +113,4 @@
 gPackageHash = {}
 gModuleHash = {}
 gEnableGenfdsMultiThread = False
+gSikpAutoGenCache = set()