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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def process_input_buffer():
 """Send the content of the input buffer to all remote processes, this must be called in the main thread"""

    from polysh.control_commands_helpers import handle_control_command
    data = the_stdin_thread.input_buffer.get()
    remote_dispatcher.log(b'> ' + data)

    if data.startswith(b':'):
        try:
            handle_control_command(data[1:-1].decode())
        except UnicodeDecodeError as e:
            console_output(b'Could not decode command.')
        return

    if data.startswith(b'!'):
        try:
            retcode = subprocess.call(data[1:], shell=True)
        except OSError as e:
            if e.errno == errno.EINTR:
                console_output(b'Child was interrupted\n')
                retcode = 0
            else:
                raise
        if retcode > 128 and retcode <= 192:
            retcode = 128 - retcode
        if retcode > 0:
            console_output('Child returned {:d}\n'.format(retcode).encode())
        elif retcode < 0:
            console_output('Child was terminated by signal {:d}\n'.format(
                -retcode).encode())
        return

    for r in dispatchers.all_instances():
        try:
            r.dispatch_command(data)
        except asyncore.ExitNow as e:
            raise e
        except Exception as msg:
            raise msg
            console_output('{} for {}, disconnecting\n'.format(
                str(msg), r.display_name).encode())
            r.disconnect()
        else:
            if r.enabled and r.state is remote_dispatcher.STATE_IDLE:
                r.change_state(remote_dispatcher.STATE_RUNNING)