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 <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

2 files changed, 5 insertions, 0 deletions

diff --git a/BaseTools/Source/Python/AutoGen/AutoGen.py b/BaseTools/Source/Python/AutoGen/AutoGen.py
index b0801c7..d100648 100644
--- a/BaseTools/Source/Python/AutoGen/AutoGen.py
+++ b/BaseTools/Source/Python/AutoGen/AutoGen.py
@@ -4309,11 +4309,14 @@ class ModuleAutoGen(AutoGen):
     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 @@ class ModuleAutoGen(AutoGen):
                     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
index afb3d8f..fac7cde 100644
--- a/BaseTools/Source/Python/Common/GlobalData.py
+++ b/BaseTools/Source/Python/Common/GlobalData.py
@@ -113,3 +113,4 @@ gPlatformHash = None
 gPackageHash = {}

 gModuleHash = {}

 gEnableGenfdsMultiThread = False

+gSikpAutoGenCache = set()