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101 lines
2.4 KiB
Python
Executable file
101 lines
2.4 KiB
Python
Executable file
#!/usr/bin/env python
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# coding:utf-8
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import os
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#Try to retrieve limits of memory for the current process' cgroup
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def getCgroupMemorySize():
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#first of all, get pid of process
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pid = os.getpid()
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#Get cgroup associated with pid
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filename = f"/proc/{pid}/cgroup"
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cgroup = None
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try:
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with open(filename, "r") as f :
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#cgroup file is a ':' separated table
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#lookup a line where the second field is "memory"
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lines = f.readlines()
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for line in lines:
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tokens = line.rstrip("\r\n").split(":")
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if len(tokens) < 3:
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continue
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if tokens[1] == "memory":
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cgroup = tokens[2]
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except IOError:
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pass
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if cgroup is None:
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return -1
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size = -1
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filename = f"/sys/fs/cgroup/memory/{cgroup}/memory.limit_in_bytes"
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try:
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with open(filename, "r") as f :
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value = f.read().rstrip("\r\n")
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if value.isnumeric():
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size = int(value)
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except IOError:
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pass
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return size
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def parseNumericList(str):
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nList = []
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for item in str.split(','):
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if '-' in item:
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start, end = item.split('-')
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start = int(start)
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end = int(end)
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nList.extend(range(start, end + 1))
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else:
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value = int(item)
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nList.append(value)
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return nList
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#Try to retrieve limits of cores for the current process' cgroup
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def getCgroupCpuCount():
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#first of all, get pid of process
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pid = os.getpid()
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#Get cgroup associated with pid
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filename = f"/proc/{pid}/cgroup"
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cgroup = None
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try:
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with open(filename, "r") as f :
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#cgroup file is a ':' separated table
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#lookup a line where the second field is "memory"
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lines = f.readlines()
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for line in lines:
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tokens = line.rstrip("\r\n").split(":")
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if len(tokens) < 3:
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continue
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if tokens[1] == "cpuset":
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cgroup = tokens[2]
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except IOError:
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pass
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if cgroup is None:
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return -1
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size = -1
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filename = f"/sys/fs/cgroup/cpuset/{cgroup}/cpuset.cpus"
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try:
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with open(filename, "r") as f :
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value = f.read().rstrip("\r\n")
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nlist = parseNumericList(value)
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size = len(nlist)
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except IOError:
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pass
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return size
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