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101 lines
3.0 KiB
Python
101 lines
3.0 KiB
Python
#!/usr/bin/env python
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import sys, os
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import string
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class ProcInfo:
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dir_path = "/proc/" # Our cute Proc File System
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status_file = "status"
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stat_file = "stat"
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proc_list = [] # Our PID list :D
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proc_info = [] #
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def __init__(self):
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self.proc_list = self.Get_PID_List()
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# Returns Process List
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def Get_PID_List(self):
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list = []
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# Exists our procfs ?
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if os.path.isdir(self.dir_path):
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# around dir entries
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for f in os.listdir(self.dir_path):
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if os.path.isdir(self.dir_path+f) & str.isdigit(f):
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list.append(int(f))
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return list
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def MemoryInfo(self, pid):
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# Path
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pidfile = self.dir_path + str(pid) + "/stat"
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try:
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infile = open(pidfile, "r")
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except:
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print "Error trying " + pidfile
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return None
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# Parsing data , check 'man 5 proc' for details
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data = infile.read().split()
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infile.close()
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state_dic = {
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'R': 'Running',
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'S': 'Sleeping',
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'D': 'Disk sleep',
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'Z': 'Zombie',
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'T': 'Traced/Stopped',
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'W': 'Paging'
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}
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# user and group owners
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pidstat = os.stat(pidfile)
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info = {
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'pid': int(data[0]), # Process ID
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'name': data[1].strip('()'), # Process name
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'state': data[2], # Process State, ex: R|S|D|Z|T|W
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'state_name': state_dic[data[2]], # Process State name, ex: Running, sleeping, Zombie, etc
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'ppid': int(data[3]), # Parent process ID
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'utime': int(data[13]), # Used jiffies in user mode
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'stime': int(data[14]), # Used jiffies in kernel mode
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'start_time': int(data[21]), # Process time from system boot (jiffies)
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'vsize': int(data[22]), # Virtual memory size used (bytes)
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'rss': int(data[23])*4, # Resident Set Size (bytes)
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'user_id': pidstat.st_uid, # process owner
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'group_id': pidstat.st_gid # owner group
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}
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return info
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# Returns the CPU usage expressed in Jiffies
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def get_CPU_usage(self, cpu_hz, used_jiffies, start_time):
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# Uptime info
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uptime_file = self.dir_path + "/uptime"
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try:
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infile = file(uptime_file, "r")
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except:
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print "Error trying uptime file"
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return None
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uptime_line = infile.readline()
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uptime = string.split(uptime_line, " ",2)
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infile.close()
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# System uptime, from /proc/uptime
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uptime = float(uptime[0])
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# Jiffies
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avail_jiffies = (uptime * cpu_hz) - start_time
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cpu_usage = {'used_jiffies': used_jiffies, 'avail_jiffies': avail_jiffies}
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return cpu_usage
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