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Full Discussion: Capturing PIDs of same process at different instances
Top Forums Shell Programming and Scripting Capturing PIDs of same process at different instances Post 302569840 by suryaemlinux on Tuesday 1st of November 2011 05:51:36 PM
Old 11-01-2011
Capturing PIDs of same process at different instances
Hi,
I'm gonna launch a process from my 'C' code. I'm gonna launch it a few times. I would like to capture the PID of that process each time I launch. I have to copy the each PIDs into a 'C' variable and I have to kill all of them when I exit from the 'C' code.

My requirement is


int pid_var1;
int pid_var2;
int pid_var3;


system(launch_pro); //Instance 1
pid_var1 = PID (launch_pro); // How do I do this???


I have to repeat this for all the instances.


Thanks,
 

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LEARN ABOUT SUSE

gst-launch-ext-0.8

gst-launch-ext-0.8(1)						   User Commands					     gst-launch-ext-0.8(1)

NAME

       gst-launch-ext-0.8, gst-launch-ext - run a predefined GStreamer pipeline

SYNOPSIS

       gst-launch-ext-0.8 filename [filename...] [gst-std-options]

       gst-launch-ext filename [filename...] [gst-std-options]

DESCRIPTION

       gst-launch-ext-0.8  runs  a  basic predefined GStreamer pipeline, and prints the name of the pipeline. gst-launch-ext-0.8 is only used as a
       quick test to ensure that codecs and GStreamer work properly. gst-launch-ext-0.8 does not handle more advanced features	such  as  synchro-
       nization.

OPTIONS

       The following options are supported by gst-launch-ext-0.8 and gst-launch-ext:

       gst-std-options		       Standard  options  available  for  use  with  most GStreamer applications.  See gst-std-options(5) for more
				       information.

       The following options are supported by gst-launch-ext only:

       --gst-list-mm   List found major/minor versions. This option displays the versions that are available.

       --gst-mm=string Force major/minor version. This option enables you to specify a specific version to run, if you do  not	want  to  run  the
		       default version.

       --print	       Print wrapped command line. This option displays the command that will be run, and then runs the command.

OPERANDS

       The following operands are supported:

       filename        The name of the GStreamer pipeline to run.

EXTENDED DESCRIPTION

       gst-launch-ext-0.8  can	be  configured by creating a .gst file in your home directory. This PERL-style configuration file can override the
       default values for audio and video output sinks.

       The following example .gst file implements the same defaults as those hard-coded in the script:

       AUDIOSINK = osssink
       VIDEOSINK = ffmpegcolorspace ! xvimagesink

       You can change osssink to esdsink, alsasink, or sunaudiosink, and you can change xvimagesink to ximagesink, aasink,  or	sdlvideosink.  You
       must have the appropriate plugin installed on the system to use the specified output sink. Other GStreamer plug-ins can also be used.

EXAMPLES

       Example 1: Launching a GStreamer Pipeline

       example% gst-launch-ext-0.8 filename

EXIT STATUS

       The following exit values are returned:

       0	Application exited successfully

       >0	Application exited with failure

FILES

       The following files are used by this application:

       /usr/bin/gst-launch-ext-Executable to run a predefined GStreamer pipeline

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWgnome-media		   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |External			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       Latest version of the GNOME Desktop User Guide for your platform.

       gst-complete(1),  gst-compprep(1),  gst-feedback(1),  gst-inspect(1), gst-launch(1), gst-md5sum(1), gst-register(1), gst-thumbnail(1), gst-
       typefind(1), gst-xmlinspect(1), gst-xmllaunch(1), gstreamer-properties(1), libgstreamer-0.8(3), libgstgetbits(3), gst-std-options(5)

NOTES

       Written by Brian Cameron, Sun Microsystems Inc., 2004.

SunOS 5.10							    14 Oct 2004 					     gst-launch-ext-0.8(1)
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