Hi Michael,
For the file operation, I would suggest to use with statement. with statement
will automatically close the file after the nested block of code. The advantage
of using a with statement is that it is guaranteed to close the file no matter
how the nested block exits.
For example
try:
with open(self._FilePath, "r", 0) as File
FileLinesList = File.readlines()
except BaseException:
EdkLogger.error("build", AUTOGEN_ERROR, 'File %s is opened
failed.' % self._FilePath)
Thanks,
Bob
-----Original Message-----
From: edk2-devel [mailto:[email protected]]
Sent: Friday, November 2, 2018 7:35 AM
To: [email protected]
Cc: Gao, Liming <[email protected]>
Subject: [edk2] [PATCH v1 1/1] BaseTools: Explicitly close files after readlines
From: mjohn4 <[email protected]>
Rework some file open().readlines to open, readlines, close.
This prevents excessive file handles being open at the same time, which may be
a problem with alternative python environments.
Cc: Liming Gao <[email protected]>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Michael Johnson <[email protected]>
---
BaseTools/Source/Python/AutoGen/InfSectionParser.py | 4 +++-
BaseTools/Source/Python/Workspace/MetaFileParser.py | 16 ++++++++++++----
2 files changed, 15 insertions(+), 5 deletions(-)
diff --git a/BaseTools/Source/Python/AutoGen/InfSectionParser.py
b/BaseTools/Source/Python/AutoGen/InfSectionParser.py
index d985089738..b186984101 100644
--- a/BaseTools/Source/Python/AutoGen/InfSectionParser.py
+++ b/BaseTools/Source/Python/AutoGen/InfSectionParser.py
@@ -34,7 +34,9 @@ class InfSectionParser():
SectionData = []
try:
- FileLinesList = open(self._FilePath, "r", 0).readlines()
+ File = open(self._FilePath, "r", 0)
+ FileLinesList = File.readlines()
+ File.close()
except BaseException:
EdkLogger.error("build", AUTOGEN_ERROR, 'File %s is opened
failed.' % self._FilePath)
diff --git a/BaseTools/Source/Python/Workspace/MetaFileParser.py
b/BaseTools/Source/Python/Workspace/MetaFileParser.py
index 804a4aa5cb..9a795315d1 100644
--- a/BaseTools/Source/Python/Workspace/MetaFileParser.py
+++ b/BaseTools/Source/Python/Workspace/MetaFileParser.py
@@ -537,7 +537,9 @@ class InfParser(MetaFileParser):
NmakeLine = ''
Content = ''
try:
- Content = open(str(self.MetaFile), 'r').readlines()
+ File = open(str(self.MetaFile), 'r')
+ Content = File.readlines()
+ File.close ()
except:
EdkLogger.error("Parser", FILE_READ_FAILURE,
ExtraData=self.MetaFile)
@@ -917,7 +919,9 @@ class DscParser(MetaFileParser):
def Start(self):
Content = ''
try:
- Content = open(str(self.MetaFile), 'r').readlines()
+ File = open(str(self.MetaFile), 'r')
+ Content = File.readlines()
+ File.close()
except:
EdkLogger.error("Parser", FILE_READ_FAILURE,
ExtraData=self.MetaFile)
@@ -1429,7 +1433,9 @@ class DscParser(MetaFileParser):
self._SubsectionType = MODEL_UNKNOWN
def __RetrievePcdValue(self):
- Content = open(str(self.MetaFile), 'r').readlines()
+ File = open(str(self.MetaFile), 'r')
+ Content = File.readlines()
+ File.close()
GlobalData.gPlatformOtherPcds['DSCFILE'] = str(self.MetaFile)
for PcdType in (MODEL_PCD_PATCHABLE_IN_MODULE,
MODEL_PCD_DYNAMIC_DEFAULT, MODEL_PCD_DYNAMIC_HII,
MODEL_PCD_DYNAMIC_VPD, MODEL_PCD_DYNAMIC_EX_DEFAULT,
MODEL_PCD_DYNAMIC_EX_HII, @@ -1727,7 +1733,9 @@ class DecParser(MetaFileParser):
def Start(self):
Content = ''
try:
- Content = open(str(self.MetaFile), 'r').readlines()
+ File = open(str(self.MetaFile), 'r')
+ Content = File.readlines()
+ File.close()
except:
EdkLogger.error("Parser", FILE_READ_FAILURE,
ExtraData=self.MetaFile)
--
2.18.0.windows.1
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