CODEWITHSUNDEEP
perl
Maverick
Maverick

Reputation: 587

How to get the desired pid from the log file

I am trying to automate one task for my project there i have to parse one log file and search for specific pid. If that pid encounter more then 50 time then i have to print my message.

My code:

#!/usr/bin/perl -w
use strict; 

open(my $fh,"<","UIlogs.txt") or die "can not open the file $!";
my @lines = <$fh>;
close($fh);
 my $count=0;
for(my $i=0; $i<=$#lines;$i++)
{

  if($lines[$i] =~ m/Input event injection from pid (\d+) failed/gi)
  {
    #print"UI freez\n";
   print"$1\n"; 

  } 

}

Log:

07-10 16:36:43.632   784   784 W InputManager: Input event injection from pid 2019 failed.

07-10 16:36:43.632   784   795 W InputManager: Input event injection from pid 2019 failed.

07-10 16:36:45.114  2041  2041 D AndroidRuntime: 

07-10 16:36:45.114  2041  2041 D AndroidRuntime: >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<

07-10 16:36:45.114  2041  2041 D AndroidRuntime: CheckJNI is OFF

07-10 16:36:45.124  2041  2041 D dalvikvm: Trying to load lib libjavacore.so 0x0

07-10 16:36:45.124  2041  2041 D dalvikvm: Added shared lib libjavacore.so 0x0

07-10 16:36:45.134  2041  2041 D dalvikvm: Trying to load lib libnativehelper.so 0x0

07-10 16:36:45.134  2041  2041 D dalvikvm: Added shared lib libnativehelper.so 0x0

07-10 16:36:45.244  2041  2041 D AndroidRuntime: Calling main entry com.android.commands.input.Input

07-10 16:36:45.244  2041  2041 I Input   : injectKeyEvent: KeyEvent { action=ACTION_DOWN, keyCode=KEYCODE_DPAD_CENTER, scanCode=0, metaState=0, flags=0x0, repeatCount=0, eventTime=166218, downTime=166218, deviceId=-1, source=0x101 }

07-10 16:36:45.254   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:45.254  2041  2041 I Input   : injectKeyEvent: KeyEvent { action=ACTION_UP, keyCode=KEYCODE_DPAD_CENTER, scanCode=0, metaState=0, flags=0x0, repeatCount=0, eventTime=166218, downTime=166218, deviceId=-1, source=0x101 }

07-10 16:36:45.254   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:45.254  2041  2041 D AndroidRuntime: Shutting down VM

07-10 16:36:45.254  2041  2050 D dalvikvm: GC_CONCURRENT freed 94K, 17% free 479K/576K, paused 0ms+0ms, total 3ms

07-10 16:36:45.254   784  1016 W InputManager: Input event injection from pid 2041 failed.

07-10 16:36:45.254   784  1083 W InputManager: Input event injection from pid 2041 failed.

07-10 16:36:52.932  2061  2061 D AndroidRuntime: 

07-10 16:36:52.932  2061  2061 D AndroidRuntime: >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<

07-10 16:36:52.932  2061  2061 D AndroidRuntime: CheckJNI is OFF

07-10 16:36:52.942  2061  2061 D dalvikvm: Trying to load lib libjavacore.so 0x0

07-10 16:36:52.942  2061  2061 D dalvikvm: Added shared lib libjavacore.so 0x0

07-10 16:36:52.952  2061  2061 D dalvikvm: Trying to load lib libnativehelper.so 0x0

07-10 16:36:52.952  2061  2061 D dalvikvm: Added shared lib libnativehelper.so 0x0

07-10 16:36:53.082  2061  2061 D AndroidRuntime: Calling main entry com.android.commands.monkey.Monkey

07-10 16:36:53.092  2061  2061 D dalvikvm: Note: class Landroid/app/ActivityManagerNative; has 163 unimplemented (abstract) methods

07-10 16:36:53.112   784  1076 I ActivityManager: START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.android.contacts/.activities.PeopleActivity} from pid 2061

07-10 16:36:53.122   784  1076 I ActivityManager: Start proc com.android.contacts for activity com.android.contacts/.activities.PeopleActivity: pid=2077 uid=10000 gids={50000, 3003, 1015, 1028}

07-10 16:36:53.212  2077  2077 I ContactsIntentResolver: Called with action: android.intent.action.MAIN

07-10 16:36:53.232  2077  2092 I AccountTypeManager: Loaded meta-data for 1 account types, 0 accounts in 19ms(wall) 5ms(cpu)

07-10 16:36:53.272  2077  2077 I ContactPhotoManager: Cache adj: 1.0

07-10 16:36:53.463  2077  2077 D libEGL  : loaded /vendor/lib/egl/libEGL_adreno.so

07-10 16:36:53.463  2077  2077 D libEGL  : loaded /vendor/lib/egl/libGLESv1_CM_adreno.so

07-10 16:36:53.463  2077  2077 D libEGL  : loaded /vendor/lib/egl/libGLESv2_adreno.so

07-10 16:36:53.473  2077  2077 I Adreno-EGL: <qeglDrvAPI_eglInitialize:316>: EGL 1.4 QUALCOMM build: AU_LINUX_ANDROID_JB_2.6.04.02.02.109.046_msm8960_JB_2.6_CL3925444_release_AU (CL3925444)

07-10 16:36:53.473  2077  2077 I Adreno-EGL: OpenGL ES Shader Compiler Version: 17.01.08

07-10 16:36:53.473  2077  2077 I Adreno-EGL: Build Date: 07/09/13 Tue

07-10 16:36:53.473  2077  2077 I Adreno-EGL: Local Branch: mybranch1230998

07-10 16:36:53.473  2077  2077 I Adreno-EGL: Remote Branch: quic/jb_3.1

07-10 16:36:53.473  2077  2077 I Adreno-EGL: Local Patches: NONE

07-10 16:36:53.473  2077  2077 I Adreno-EGL: Reconstruct Branch: AU_LINUX_ANDROID_JB_2.6.04.02.02.109.046 + e363aa2 + 76767df +  NOTHING

07-10 16:36:53.523  2077  2077 D OpenGLRenderer: Enabling debug mode 0

07-10 16:36:53.623   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:53.623   784   857 I ActivityManager: Displayed com.android.contacts/.activities.PeopleActivity: +511ms

07-10 16:36:53.623   784  1016 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:53.633   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:53.633   784  1103 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:54.133   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:54.133   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:54.133   784  1083 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:54.133   784  1016 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:54.634   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:54.634   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:54.634   784   796 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:54.634   784   795 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:55.144   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:55.144   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:55.144   784  1103 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:55.144   784  1191 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:55.645   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:55.645   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:55.645   784  1016 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:55.655   784  1083 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:56.156   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:56.156   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:56.156   784   784 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:56.156   784   795 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:56.666   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:56.666   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:56.666   784   796 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:56.666   784  1076 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:57.167   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:57.167   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:57.167   784  1190 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:57.167   784  1191 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:57.677   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:57.677   784  1103 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:57.677   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:57.677   784  1083 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:58.188   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:58.188   784  1016 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:58.188   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:58.188   784   795 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:58.698   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:58.698   784   784 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:58.698   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:58.698   784   796 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:59.039   784   910 W QCNEJ   : |CORE| UNKOWN Unsolicited Event 6

07-10 16:36:59.209   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:59.209   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:59.209   784  1190 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:59.209   784  1103 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:59.719   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:59.719   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:36:59.719   784  1083 W InputManager: Input event injection from pid 2061 failed.

07-10 16:36:59.719   784   795 W InputManager: Input event injection from pid 2061 failed.

07-10 16:37:00.230   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:37:00.230   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:37:00.230   784  1191 W InputManager: Input event injection from pid 2061 failed.

07-10 16:37:00.230   784  1076 W InputManager: Input event injection from pid 2061 failed.

07-10 16:37:00.740   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:37:00.740   784  1103 W InputManager: Input event injection from pid 2061 failed.

07-10 16:37:00.740   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:37:00.740   784  1190 W InputManager: Input event injection from pid 2061 failed.

07-10 16:37:01.251   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:37:01.251   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:37:01.251   784  1016 W InputManager: Input event injection from pid 2061 failed.

07-10 16:37:01.251   784   784 W InputManager: Input event injection from pid 2061 failed.

07-10 16:37:01.762   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:37:01.762   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:37:01.762   784   796 W InputManager: Input event injection from pid 2061 failed.

07-10 16:37:01.762   784  1076 W InputManager: Input event injection from pid 2061 failed.

07-10 16:37:02.272   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:37:02.272   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:37:02.272   784  1191 W InputManager: Input event injection from pid 2061 failed.

07-10 16:37:02.272   784  1103 W InputManager: Input event injection from pid 2061 failed.

07-10 16:37:02.773   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:37:02.773   784   886 I InputDispatcher: Dropped event because input dispatch is disabled.

07-10 16:37:02.773   784  1190 W InputManager: Input event injection from pid 2061 failed.

07-10 16:37:02.783   784   795 W InputManager: Input event injection from pid 2061 failed.

With my code i am not able to handle other pid i.e how to count only that pid which is there in the log for more then 50 time . Only one pid would be cross this count if UI freez will happen.

Upvotes: 1

Views: 365

Answers (2)

TLP
TLP

Reputation: 67900

This is really just a simple counting exercise. You capture a string with a regex, and you count its frequency with a hash:

perl -nlwe '$a{$1}++ if /Input event injection from pid (\d+)/ 
           END { for (keys %a) { print qq($_ -> $a{$_}) } }' inject.log

I get this output from your input:

2061 -> 38
2019 -> 2
2041 -> 2

As a program file, it would look like this:

while (<>) {
    $a{$1}++ if /Input event injection from pid (\d+)/;
}
for my $key (keys %a) {
    print "$key -> $a{$key}\n";
}

<> the diamond operator either reads STDIN, or treats the arguments as file names to be used for input. $a{$1}++ uses the string captured from the regex in a hash, and ++ increments its value.

Of course I chose a simple print for all elements, but you could simply add a check for values over 50:

next if $a{$key} < 50;

Some notes on your code:

  • Don't use C-style for loops unless you really need to know the index of the array you are looping over. Instead use the Perl style, often referred to as "foreach": for my $line (@lines)
  • Don't read the whole file into an array if you don't have to. You can simply iterate over the file handle like so: while (<$fh>) -- this will read one line per iteration into $_ (or the variable of your choice, e.g. while (my $foo = <$fh>)), until end of file eof.
  • It is really good to see that you are using use strict and warnings. Usually, use warnings is preferred to using -w on the shebang, since it is more readable, and also it is a lexical pragma, rather than global.

Upvotes: 1

PP.
PP.

Reputation: 10864

A hash is useful for keeping track of how many xxxxx appears.

e.g.

if($lines[$i] =~ m/Input event injection from pid (\d+) failed/gi)
{
    my $foundpid = $1;
    print "Found pid:$1\n"; 
    $pids{$foundpid} += 1;
    if ( $pids{$foundpid} > 100 ) {
        print "PID $foundpid is extra naughty today!\n";
    }
}

Usually you only want to print one warning message for each PID that exceeds your limit, however, so we would save the processing of the hash to the end, e.g.:

my %pids = (); # initialise hash

for ( ... )  { # process lines
    if ( ... ) { # match line
        $pids{$foundpid} += 1;
    }
}

# now scan our hash of pids and filter those that failed the condition
foreach my $pid ( sort { $a <=> $b keys %pids ) ) {
    if ( $pids{$pid} > 100 ) {
        print( "Bad PID $pid was seen " . $pids{$pid} . " times!\n" );
    }
}

Later if you want to make your code a little more terse you could re-write that last part as:

my @failedpids = grep { $pids{$_} > 100 } keys %pids;
print( "Failed PIDs were: " );
print( join( ", ", sort { $a <=> $b } @failedpids ) );
print( "\n" );

Upvotes: 3

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