On Fri, Dec 12, 2014 at 12:48 AM, Robert Clove <cloverob...@gmail.com> wrote:
> Hi All,
>
> I have the following python script that runs.
> I want is to run the subprocess to run for 60 sec and then send the SIGINT
> signal to subprocess and write the output in file.
>
> #!/usr/bin/python
> import os
> import subprocess
> PIPE = subprocess.PIPE
> import signal
> import time
>
> def handler(signum, frame):
> pass
>
> signal.signal(signal.SIGALRM, handler)
> signal.alarm(60)
> command = "strace -c ./server"
> os.chdir("/root/Desktop/")
> p = subprocess.Popen(command, stdout=PIPE, stderr=PIPE)
> time.sleep(60)
> p.send_signal(signal.SIGINT)
> signal.alarm(0)
> print p.communicate()[1]
Perhaps try something like:
#!/usr/bin/python
#import os
import subprocess
PIPE = subprocess.PIPE
import signal
import time
#def handler(signum, frame):
# pass
with open('output.txt', 'w') as out_file:
#signal.signal(signal.SIGALRM, handler)
#signal.alarm(60)
#command = "strace -c ./server"
command = "./test-script"
#os.chdir("/root/Desktop/")
p = subprocess.Popen(command, stdout=out_file, stderr=out_file, shell=True)
time.sleep(5)
p.send_signal(signal.SIGINT)
#signal.alarm(0)
#print p.communicate()[1]
with open('output.txt', 'r') as in_file:
output = in_file.read()
print(output)
BTW, killing an active strace may leave strace's subprocess stuck in
an unkillable state.
Also note that this will sleep for n seconds whether the subprocess
takes that long or not.
If you just want a program that does this, and it doesn't have to be
in Python, you might try
http://stromberg.dnsalias.org/~strombrg/maxtime.html
It's in C, and is the product of considerable real-world use. It
exits almost immediately after its subprocess exits, FWIW.
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