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Top Forums Programming parsing currently running processes Post 302092620 by blowtorch on Wednesday 11th of October 2006 06:56:13 AM
Old 10-11-2006
parsing currently running processes

Hey guys,
I'm writing a monitoring program that reads the pattern and the max and min number of instances of a process and then proceeds to parse the currently running processes for the pattern.

I just want to know how I should go about this. I'll give you an idea of the flow of the program:
1. daemonise /*this is yet to be implemented*/
2. read the process info file to build a list of the process pattern, min number and max number of instances and the rate of scanning for the pattern (in minutes).
3. loop forever and compare the processes in the list to the currently running processes and throw the appropriate alerts (or whatever)

It is point #3 that has me a bit confused. Should I read the /proc into another list, loop for each process pattern in the original list over the proc list? Or should I not read the /proc into a list at all, and just iterate over the list and read the /proc everytime (considering that /proc is in memory, that shouldn't take too much time either).

Currently the OSes that should work are Solaris and Linux as I have easy access to both, I will probably extend this to HP-UX later.
 

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tt_pattern_scope_add(library call)										tt_pattern_scope_add(library call)

NAME
tt_pattern_scope_add -- add a value to the scope field for a pattern SYNOPSIS
#include <Tt/tt_c.h> Tt_status tt_pattern_scope_add( Tt_pattern p, Tt_scope s); DESCRIPTION
The tt_pattern_scope_add function adds a value to the scope field for the specified pattern. The p argument is a unique handle for a message pattern. This handle is returned after tt_pattern_create(3) is called. The s argument specifies what processes are eligible to receive the message. The following values are defined: TT_SESSION All processes joined to the indicated session are eligible. TT_FILE All processes joined to the indicated file are eligible. TT_BOTH All processes joined to either indicated file or the indicated session are eligible. TT_FILE_IN_SESSION All processes joined to both the indicated file and the indicated session are eligible. RETURN VALUE
Upon successful completion, the tt_pattern_scope_add function returns the status of the operation as one of the following Tt_status values: TT_OK The operation completed successfully. TT_ERR_NOMP The ttsession(1) process is not running and the ToolTalk service cannot restart it. TT_ERR_POINTER The pointer passed does not point to an object of the correct type for this operation. SEE ALSO
Tt/tt_c.h - Tttt_c(5), tt_pattern_create(3). tt_pattern_scope_add(library call)
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