Re^3: Background process

Yes. It is very useful. I'm surprised that no one has thought to back port this to *nix.

The only fly in the ointment is that it truncates the potentially 32-bit return value from the executable to 8-bits.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

"Science is about questioning the status quo. Questioning authority".

In the absence of evidence, opinion is indistinguishable from prejudice.

Comment on Re^3: Background process

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Re^4: Background process by DeadPoet (Scribe) on Jan 11, 2011 at 19:40 UTC
Silly example, but might help. #! perl -slw use POSIX qw(:errno_h :sys_wait_h); use constant { RET_SUCCESS => 1, RET_FAILURE => 0, }; sub check_process_signal { my $sig = shift; if ( WIFEXITED($sig) ) { print q{process normal exit}; return RET_SUCCESS; } elsif ( WIFSIGNALED($sig) ) { print q{process terminated because of signal}; return RET_FAILURE; } elsif ( WIFSTOPPED($sig) ) { print q{process is stopped}; return RET_FAILURE; } return RET_SUCCESS; } my $pid = #run your command however.... waitpid( $pid, 0 ); if ( check_process_signal( $? ) ) { ## success... } else { ## failure ... } [download] Coded on the fly sorry if there are any errors. --Poet	[reply] [d/l]

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Re^4: Background process
by DeadPoet (Scribe) on Jan 11, 2011 at 19:40 UTC

#! perl -slw
use POSIX qw(:errno_h :sys_wait_h);

use constant {
  RET_SUCCESS => 1,
  RET_FAILURE => 0,
};

sub check_process_signal {
  my $sig = shift;
  if ( WIFEXITED($sig) ) {
    print q{process normal exit};
    return RET_SUCCESS;
  } elsif ( WIFSIGNALED($sig) ) {
    print q{process terminated because of signal};
    return RET_FAILURE;
  }  elsif ( WIFSTOPPED($sig) ) {
    print q{process is stopped};
    return RET_FAILURE;
  }
  return RET_SUCCESS;
}

my $pid = #run your command however....

waitpid( $pid, 0 );
if ( check_process_signal( $? ) ) {
  ## success...
} else {
  ## failure ...
}
[download]

Coded on the fly sorry if there are any errors.

[reply]
[d/l]