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proc/5276/root/usr/local/src/mysql-5.5.28/mysql-test/lib/_[ Not.Writable ]

File://proc/5276/root/usr/local/src/mysql-5.5.28/mysql-test/lib/mtr_process.pl

# -*- cperl -*-
# Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
# 
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

# This is a library file used by the Perl version of mysql-test-run,
# and is part of the translation of the Bourne shell script with the
# same name.

use strict;
use Socket;
use Errno;
use My::Platform;
use if IS_WINDOWS, "Net::Ping";

# Ancient perl might not have port_number method for Net::Ping.
# Check it and use fallback to connect() if it is not present.
BEGIN 
{
  my $use_netping= 0;
  if (IS_WINDOWS)
  {
    my $ping = Net::Ping->new();
    if ($ping->can("port_number"))
    {
      $use_netping= 1;
    }
  }
  eval 'sub USE_NETPING { $use_netping }';
}
  
sub sleep_until_file_created ($$$);
sub mtr_ping_port ($);

sub mtr_ping_port ($) {
  my $port= shift;

  mtr_verbose("mtr_ping_port: $port");

  if (IS_WINDOWS && USE_NETPING)
  {
    # Under Windows, connect to a port that is not open is slow
    # It takes ~1sec. Net::Ping with small timeout is much faster.
    my $ping = Net::Ping->new();
    $ping->port_number($port);
    if ($ping->ping("localhost",0.1))
    {
      mtr_verbose("USED");
      return 1;
    }
    else
    {
      mtr_verbose("FREE");
      return 0;
    }
  }
  
  my $remote= "localhost";
  my $iaddr=  inet_aton($remote);
  if ( ! $iaddr )
  {
    mtr_error("can't find IP number for $remote");
  }
  my $paddr=  sockaddr_in($port, $iaddr);
  my $proto=  getprotobyname('tcp');
  if ( ! socket(SOCK, PF_INET, SOCK_STREAM, $proto) )
  {
    mtr_error("can't create socket: $!");
  }

  mtr_debug("Pinging server (port: $port)...");

  if ( connect(SOCK, $paddr) )
  {
    close(SOCK);                        # FIXME check error?
    mtr_verbose("USED");
    return 1;
  }
  else
  {
    mtr_verbose("FREE");
    return 0;
  }
}

##############################################################################
#
#  Wait for a file to be created
#
##############################################################################

# FIXME check that the pidfile contains the expected pid!

sub sleep_until_file_created ($$$) {
  my $pidfile= shift;
  my $timeout= shift;
  my $proc=     shift;
  my $sleeptime= 100; # Milliseconds
  my $loops= ($timeout * 1000) / $sleeptime;

  for ( my $loop= 1; $loop <= $loops; $loop++ )
  {
    if ( -r $pidfile )
    {
      return 1;
    }

    my $seconds= ($loop * $sleeptime) / 1000;

    # Check if it died after the fork() was successful
    if ( defined $proc and ! $proc->wait_one(0) )
    {
      mtr_warning("Process $proc died after mysql-test-run waited $seconds " .
		  "seconds for $pidfile to be created.");
      return 0;
    }

    mtr_debug("Sleep $sleeptime milliseconds waiting for $pidfile");

    # Print extra message every 60 seconds
    if ( $seconds > 1 && int($seconds * 10) % 600 == 0 && $seconds < $timeout )
    {
      my $left= $timeout - $seconds;
      mtr_warning("Waited $seconds seconds for $pidfile to be created, " .
                  "still waiting for $left seconds...");
    }

    mtr_milli_sleep($sleeptime);

  }

  mtr_warning("Timeout after mysql-test-run waited $timeout seconds " .
	      "for the process $proc to create a pid file.");
  return 0;
}


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