Execute a function in background and then suspend it Post: 302660421

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Top Forums Shell Programming and Scripting Execute a function in background and then suspend it Post 302660421 by ryandavison on Friday 22nd of June 2012 12:35:38 PM

06-22-2012

Registered User

Execute a function in background and then suspend it

Here is some back ground on the script. The script is to poll an arbitrary number of DB's. To do this I am creating a function that takes the file_path to the DB and the min poll interval as arguments. The function will be called for each DB and then ran in the background. The function I was originally planning on creating would be in a while true loop and I would be able to kill -stop or kill -cont each instance of the function at will. I am unable to obtain the PID of the functions. I can see that they are there when I use the command top and I can kill each individual occurrence of the function. This proves it is possible but I am looking to do this in the script containing the function. So as to eliminate user input. This is my first post, so I am unsure if I have provided the necessary information. If not feel free to ask any additional questions. I am also not entirely sure I am approaching this problem the correct way. So if you have any alternative routes I would be interested in hearing.

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LEARN ABOUT OSX

kill.d

kill.d(1m)							   USER COMMANDS							kill.d(1m)

NAME

       kill.d - snoop process signals as they occur. Uses DTrace.

SYNOPSIS

       kill.d

DESCRIPTION

       kill.d is a simple DTrace program to print details of process signals as they are sent, such as the PID source and destination, signal num-
       ber and result.

       This program can be used to determine which process is sending signals to which other process.

       Since this uses DTrace, only users with root privileges can run this command.

EXAMPLES

       Default output, print process signals as they are sent.
	      # kill.d

FIELDS

       FROM   source PID

       COMMAND
	      source command name

       TO     destination PID

       SIG    destination signal ("9" for a kill -9)

       RESULT result of signal (-1 is for failure)

DOCUMENTATION

       See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
       bose descriptions explaining the output.

EXIT

       kill.d will run forever until Ctrl-C is hit.

AUTHOR

       Brendan Gregg [Sydney, Australia]

SEE ALSO

       dtrace(1M), truss(1)

version 0.90							   May 14, 2005 							kill.d(1m)