includes/profiler/output/ProfilerOutputUdp.php

   1 <?php
   2 /**
   3  * Profiler sending messages over UDP.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Profiler
  22  */
  23
  24 /**
  25  * ProfilerSimpleUDP class, that sends out messages for 'udpprofile' daemon
  26  * (see http://git.wikimedia.org/tree/operations%2Fsoftware.git/master/udpprofile)
  27  *
  28  * @ingroup Profiler
  29  * @since 1.25
  30  */
  31 class ProfilerOutputUdp extends ProfilerOutput {
  32         public function canUse() {
  33                 # Sockets are not enabled
  34                 return function_exists( 'socket_create' );
  35         }
  36
  37         public function log( array $stats ) {
  38                 global $wgUDPProfilerHost, $wgUDPProfilerPort, $wgUDPProfilerFormatString;
  39
  40                 $sock = socket_create( AF_INET, SOCK_DGRAM, SOL_UDP );
  41                 $plength = 0;
  42                 $packet = "";
  43                 foreach ( $stats as $pfdata ) {
  44                         $pfline = sprintf( $wgUDPProfilerFormatString,
  45                                 $this->collector->getProfileID(),
  46                                 $pfdata['calls'],
  47                                 $pfdata['cpu'] / 1000, // ms => sec
  48                                 0.0, // sum of CPU^2 for each invocation (unused)
  49                                 $pfdata['real'] / 1000, // ms => sec
  50                                 0.0, // sum of real^2 for each invocation (unused)
  51                                 $pfdata['name'],
  52                                 $pfdata['memory']
  53                         );
  54                         $length = strlen( $pfline );
  55                         if ( $length + $plength > 1400 ) {
  56                                 socket_sendto( $sock, $packet, $plength, 0, $wgUDPProfilerHost, $wgUDPProfilerPort );
  57                                 $packet = "";
  58                                 $plength = 0;
  59                         }
  60                         $packet .= $pfline;
  61                         $plength += $length;
  62                 }
  63                 socket_sendto( $sock, $packet, $plength, 0x100, $wgUDPProfilerHost, $wgUDPProfilerPort );
  64         }
  65 }