I definitely have to work on shortening my script. Thanks for the tip, Scrutinizer! )
However, either way I run it, it doesn´t do what I need it to do. Back to the file:
Code:
USER PID PPID TID ST CP PRI SC WCHAN F TT BND COMMAND
root 1 0 - A 0 60 1 - 200003 - - /etc/init
- - - 4099 S 0 60 1 - 410410 - - -
root 61688 1 - A 0 60 1 117cf08 240001 - - /usr/ccs/bin/shlap64
- - - 86067 S 0 60 1 117cf08 400 - - -
I have a script that will be run beforehand to identify "problematic" transactions (definition of "problematic" is irrelevant for now). So, I will have a transaction id (TID) that I will use to grep this file with all master processes and their transactions, to find the master process the problematic transaction belongs to. Lets suppose the bad TID is 86067. The 2nd field in the file would identify the PID, but notice it has a '-'. The PID for this thread would be the PID number in the above line. Sometimes there´ll be many transactions (pid='-') for a master process.
Unless we can read "upwards" to the nearest pid number, I would like to format the file with all the processes, so that all transactions "inherit" the pid number in the second field instead of having a '-'.
Hope this is a little clearer. If you have a better idea for doing this rather than formating the file so I can grep by the transation id and then read the 2nd field, I am all ears! )
Teresa.
Last edited by pludi; 02-05-2010 at 10:27 AM..
Reason: code tags, please...
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LEARN ABOUT SUSE
gettid
GETTID(2) Linux Programmer's Manual GETTID(2)NAME
gettid - get thread identification
SYNOPSIS
#include <sys/types.h>
pid_t gettid(void);
DESCRIPTION
gettid() returns the caller's thread ID (TID). In a single-threaded process, the thread ID is equal to the process ID (PID, as returned by
getpid(2)). In a multithreaded process, all threads have the same PID, but each one has a unique TID. For further details, see the dis-
cussion of CLONE_THREAD in clone(2).
RETURN VALUE
On success, returns the thread ID of the calling process.
ERRORS
This call is always successful.
VERSIONS
The gettid() system call first appeared on Linux in kernel 2.4.11.
CONFORMING TO
gettid() is Linux-specific and should not be used in programs that are intended to be portable.
NOTES
Glibc does not provide a wrapper for this system call; call it using syscall(2).
The thread ID returned by this call is not the same thing as a POSIX thread ID (i.e., the opaque value returned by pthread_self(3)).
SEE ALSO clone(2), fork(2), getpid(2)COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2008-04-14 GETTID(2)
02-05-2010
)