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stats-process.count.py
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stats-process.count.py
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# -*- coding: utf-8 -*-
# Copyright (c) 2009 John Hobbs
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
import serial
from time import sleep
import re
import sys
import getopt
def usage ( error=None ):
if None != error:
print error
print
print "Usage:", sys.argv[0], "[OPTIONS]"
print
print "DESCRIPTION"
print "Displays the total active processes (threads) on your system."
print
print "OPTIONS"
print "-f, --file Path to loadavg file. Default: /proc/loadavg"
print "-i, --interval The refresh interval, in seconds. Default: 5"
print "-p, --port The port USB7 is on. Default: /dev/ttyACM0"
print "-h, --help Show this message."
exit()
loadavg_path = '/proc/loadavg'
port = '/dev/ttyACM0'
sleep_interval = 5
try:
options, remainder = getopt.getopt( sys.argv[1:], 'hf:i:p:', [ 'help', 'file=', 'interval=', 'port=' ] )
except:
usage( "Invalid option." )
for opt, arg in options:
if opt in ( '-h', '--help' ):
usage()
elif opt in ( '-i', '--interval' ):
try:
sleep_interval = float( arg )
except:
usage( opt + ' must be a floating point number.' )
elif opt in ( '-f', '--file' ):
loadavg_path = arg
elif opt in ( '-p', '--port' ):
port = arg
r = re.compile( "/([0-9]+)" )
ser = serial.Serial( port, 9600, timeout=0 )
try:
while True:
f = open( loadavg_path, 'r' )
t = f.read()
f.close()
g = r.search( t )
x = g.group( 1 )
ser.write( "%s\n" % x )
sleep( sleep_interval )
finally:
ser.close()