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buildstats.py: close /proc/pressure/cpu file descriptor

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Use python 'with' symantics to ensure that the /proc/pressure/cpu file
descriptor used in SystemStats init is closed. Previously, this would
lead to a single file descriptor being leaked. For example:
   ResourceWarning: unclosed file <_io.BufferedReader name='/proc/pressure/cpu'>

(From OE-Core rev: 643653160cd77d346cdc9b9ec25c7212c7dfe176)

Signed-off-by: Aryaman Gupta <aryaman.gupta@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Aryaman Gupta
2022-06-29 16:08:20 -04:00
committed by Richard Purdie
parent a26721d83b
commit 4678581ea0
1 changed files with 2 additions and 2 deletions
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meta/lib/buildstats.py
+2 -2
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@@ -23,8 +23,8 @@ class SystemStats:
# and ensure that the reduce_proc_pressure directory is not created. # and ensure that the reduce_proc_pressure directory is not created.
if os.path.exists("/proc/pressure"): if os.path.exists("/proc/pressure"):
try: try:
source = open('/proc/pressure/cpu', 'rb') with open('/proc/pressure/cpu', 'rb') as source:
source.read() source.read()
pressuredir = os.path.join(bsdir, 'reduced_proc_pressure') pressuredir = os.path.join(bsdir, 'reduced_proc_pressure')
bb.utils.mkdirhier(pressuredir) bb.utils.mkdirhier(pressuredir)
file_handlers.extend([('pressure/cpu', self._reduce_pressure), file_handlers.extend([('pressure/cpu', self._reduce_pressure),