From: Feng, Bob C <bob.c.feng@intel.com>
Date: Mon, 2 Jul 2018 01:15:47 +0000 (+0800)
Subject: BaseTool: Add cache for the result of SkipAutogen.
X-Git-Tag: edk2-stable201903~1436
X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=commitdiff_plain;h=18ef4e713f2fb5d2f84d179b9861b4afee212f65

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>
---

diff --git a/BaseTools/Source/Python/AutoGen/AutoGen.py b/BaseTools/Source/Python/AutoGen/AutoGen.py
index b0801c787a..d100648606 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 afb3d8f020..fac7cde708 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()