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Full Discussion: Perl program to simulate Least Recently Loaded paging
Top Forums Shell Programming and Scripting Perl program to simulate Least Recently Loaded paging Post 302559517 by Skrynesaver on Tuesday 27th of September 2011 09:34:47 AM
Old 09-27-2011
oops I forgot to generalise the frame length when setting the values.
Code:
#!/usr/bin/perl
use strict;


# In a production system these should be validated before progessing, but for now...
print "Page access: ";
chomp(my @pa=split(/,\s+/,<STDIN>)); # assumes separated by comma and spaces as in your example
print "Frames: ";
chomp(my $frames=<STDIN>);


my @frames; # set up an array to hold an array for each frame. 
for (my$count=0;$count<$frames;$count++){ #Process the array of arrays (see perldoc perlref for details of using array references)
        for (my $index=0;$index<@pa;$index++){ #Deep copying the elements of the Page access into each frame array
                ${$frames[$count]}[$index]=$pa[$index];
        }
        @{$frames[$count]}[0 .. ($count - 1)]=split('',"-"x$count) if $count; #Set the leading irrellevant values to '-'
        for (my $index=$count;$index<@{$frames[$count]};$index+=$frames){ # go through the frame array by whatever frame size we set
                for my $x (1..($frames -1)){ #set $frame size elements
                        ${$frames[$count]}[$index + $x] =$pa[$index];
                }
        }
        #truncate the array at the size of @pa
        @{$frames[$count]}=@{$frames[$count]}[0..(@pa - 1)];
}
#Print out your results
my $count=1;
print "PA:\t",join(' ', @pa),"\n";
for my $frame_array_ref (@frames){
        print " F$count:\t",join(' ', @{$frame_array_ref}),"\n";
        $count++;
}

This User Gave Thanks to Skrynesaver For This Post:
guidely
 

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LEARN ABOUT DEBIAN

pfsoutffmpeg

pfsoutffmpeg(1) 					      General Commands Manual						   pfsoutffmpeg(1)

NAME

       pfsoutffmpeg - Read pfs frames from stdin and forward them to ffmpeg program

SYNOPSIS

       pfsoutffmpeg [--help] <ffmpeg options> output_file

DESCRIPTION

       This command is a wrapper for ffmpeg program and can be used to write pfs frames to a compressed video.

       Check the examples section to for sample usage and see manual of ffmpeg for further information.

       Note  that  the	usage  of '-f' switch (input format specifier) and '-i' switch (input file specifier) of the ffmpeg program is implemented
       inside the script and is therefore not allowed.

EXAMPLES

       pfsinrgbe frame%04d.hdr --frames 100:2:200 | pfstmo_reinhard02 -s
	      | pfsgamma -g 1.7 | pfsoutffmpeg -qscale 4 test.avi

	      1. Read HDR frames in RGBE format with the following names:
		 frame0100.hdr, frame0102.hdr, frame0104.hdr,... frame0200.hdr

	      2. Apply local tone mapping operator to each frame (Reinhard2002
		 model, part of the PFSTMO package)

	      3. Apply gamma correction to each tone mapped frame

	      4. Compress frames to test.avi animation

SEE ALSO

       ffmpeg(1) pfsin(1) pfstmo_reinhard02(1) pfsgamma(1)

BUGS

       Frames smaller than 512x384 can cause broken pipe error, due to bug in ppm pipe reading routine in ffmpeg.

       Please report bugs and comments to Rafal Mantiuk <mantiuk@mpi-sb.mpg.de> or Grzegorz Krawczyk <krawczyk@mpi-sb.mpg.de>.

																   pfsoutffmpeg(1)
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