X-Git-Url: https://mop.ddnsfree.com/gitweb/?a=blobdiff_plain;f=web%2Fbriskin5%2Findex_rd.php;h=0a66fc8cf9e5abecd8c3de77629fda995343ba41;hb=0b1e5521bd8d1c7b6f349038fe4daa819da11d0e;hp=58280659dbb904f8d547752417ccd449ffd612dd;hpb=71ce428520a8650430f38327a5d443c7222f89a6;p=brisk.git

diff --git a/web/briskin5/index_rd.php b/web/briskin5/index_rd.php
index 5828065..0a66fc8 100644
--- a/web/briskin5/index_rd.php
+++ b/web/briskin5/index_rd.php
@@ -1,8 +1,8 @@
 <?php
 /*
- *  brisk - index_rd.php
+ *  brisk - briskin5/index_rd.php
  *
- *  Copyright (C) 2006-2011 Matteo Nastasi
+ *  Copyright (C) 2006-2012 Matteo Nastasi
  *                          mailto: nastasi@alternativeoutput.it 
  *                                  matteo.nastasi@milug.org
  *                          web: http://www.alternativeoutput.it
@@ -28,6 +28,13 @@ require_once("../Obj/brisk.phh");
 // require_once("../Obj/proxyscan.phh");
 require_once("Obj/briskin5.phh");
 
+$S_load_stat = array( 'rU_heavy'      => 0,
+                      'lL_laccgarb'   => 0,
+                      'wU_lacc_upd'   => 0,
+                      'wR_garbage'    => 0,
+                      'wR_minusone'   => 0,
+                      'wR_the_end'    => 0 );
+
 // Use of proxies isn't allowed.
 // if (is_proxy()) {
 //   sleep(5);
@@ -36,7 +43,7 @@ require_once("Obj/briskin5.phh");
 
 log_load("LOAD: bin5/index_rd.php ".$QUERY_STRING);
 
-$first_loop = TRUE;
+// $first_loop = TRUE;
 $the_end = FALSE;
 
 if (DEBUGGING == "local" && $_SERVER['REMOTE_ADDR'] != '127.0.0.1') {
@@ -46,19 +53,18 @@ if (DEBUGGING == "local" && $_SERVER['REMOTE_ADDR'] != '127.0.0.1') {
 
 function shutta()
 {
-  log_rd2("bin5 SHUTTA!".connection_status());
+  log_rd2("bin5 SHUTTA [".connection_status()."] !");
 }
 
-
 register_shutdown_function(shutta);
 
-function unrecerror()
+function blocking_error($is_unrecoverable)
 {
   GLOBAL $is_page_streaming;
 
   $is_page_streaming = TRUE;
-  log_rd2("UNREC_ERROR");
-  return (sprintf('the_end=true; window.onbeforeunload = null; window.onunload = null; document.location.assign("../index.php");'));
+  log_rd2("BLOCKING_ERROR UNREC: ".($is_unrecoverable ? "TRUE" : "FALSE"));
+  return (sprintf(($is_unrecoverable ? 'xstm.stop(); ' : '').'window.onbeforeunload = null; window.onunload = null; document.location.assign("../index.php");'));
 }
 
 function page_sync($sess, $page)
@@ -67,219 +73,312 @@ function page_sync($sess, $page)
 
   $is_page_streaming = TRUE;
   log_rd2("PAGE_SYNC");
-  return (sprintf('the_end=true; window.onbeforeunload = null; window.onunload = null; document.location.assign("%s");', $page));
+  return (sprintf('xstm.stop(); window.onbeforeunload = null; window.onunload = null; document.location.assign("%s");', $page));
 }
 
-
-
-
 function maincheck($sess, $cur_stat, $cur_subst, $cur_step, &$new_stat, &$new_subst, &$new_step, $table_idx, $table_token)
 {
-  GLOBAL $is_page_streaming, $first_loop;
-  
-  $ret = FALSE;
-  $bri = FALSE;
+    GLOBAL $is_page_streaming, $S_load_stat;
+    // GLOBAL $first_loop;
 
-  // log_rd2("M");
-  /* Sync check (read only without modifications */
-  ignore_user_abort(TRUE);
-  if (($sem = Briskin5::lock_data($table_idx)) != FALSE) { 
-    // Aggiorna l'expire time lato server
-    if  ($first_loop == TRUE) {
-      log_only("F");
+    $ret = FALSE;
+    $bri = FALSE;
+    $user = FALSE;
+    $curtime = time();
 
-      // VERIFICARE TUTTE LE LOAD_DATA E PRENDERE CONTROMISURE NEL CASO FALLISCANO //
+    if (($proxy_step = Bin5_user::load_step($table_idx, $sess)) == FALSE) {
+        log_only2("R");
+        ignore_user_abort(FALSE);
+        return (blocking_error(TRUE));
+    }
+    
+    // log_rd2("M");
+    /* Sync check (read only without modifications */
+    ignore_user_abort(TRUE);
 
-      if (($bri = &Briskin5::load_data($table_idx, $table_token)) == FALSE) {
-	Briskin5::unlock_data($sem);
+    // shared locking to load info
+    if (($sem = Bin5::lock_data(FALSE, $table_idx)) == FALSE) { 
+        // wait 20 secs, then restart the xhr 
         ignore_user_abort(FALSE);
-	return (unrecerror());
-      }
-      if (($user = &$bri->get_user($sess, $idx)) == FALSE) {
-	Briskin5::unlock_data($sem);
+        return ("sleep(gst,20000);|xstm.xhr_abort();");
+    }
+
+    if (($user = Bin5_user::load_data($table_idx, $proxy_step['i'], $sess)) == FALSE) {
+        Bin5::unlock_data($sem);
         ignore_user_abort(FALSE);
-	return (unrecerror());
-      }
-      log_auth($sess, "bin5::update lacc");
-      $user->lacc = time();
-
-      $bri->garbage_manager(FALSE);
-      
-      Briskin5::save_data($bri);
-      $first_loop = FALSE;
+        return (blocking_error(TRUE));
     }
 
-    log_lock("U");
-    Briskin5::unlock_data($sem);
+    /* if lacc time great than STREAM_TIMEOUT or the room garbage_time is expired 
+        switch to exclusive locking and verify again the conditions */
+
+    if ((($curtime - $user->lacc) > STREAM_TIMEOUT) || Bin5::garbage_time_is_expired($table_idx, $curtime)) {
+        Bin5::unlock_data($sem);
+        
+        // exclusive locking to modify info
+        if (($sem = Bin5::lock_data(TRUE, $table_idx)) == FALSE) { 
+            // wait 20 secs, then restart the xhr 
+            ignore_user_abort(FALSE);
+            return ("sleep(gst,20000);|xstm.xhr_abort();");
+        }
+        $S_load_stat['lL_laccgarb']++;
+
+        unset($user);
+        // load again the user data after new lock
+        if (($user = Bin5_user::load_data($table_idx, $proxy_step['i'], $sess)) == FALSE) {
+            Bin5::unlock_data($sem);
+            ignore_user_abort(FALSE);
+            return (blocking_error(TRUE));
+        }
+
+        if (($curtime - $user->lacc) > STREAM_TIMEOUT) {
+            $S_load_stat['wU_lacc_upd']++;
+            $user->lacc = $curtime;
+            // lacc field updated
+            Bin5_user::save_data($user, $table_idx, $user->idx);            
+        }
+
+        if (Bin5::garbage_time_is_expired($table_idx, $curtime)) {
+            log_only("F");
+                
+            $S_load_stat['wR_garbage']++;
+            if (($bri = Bin5::load_data($table_idx, $table_token)) == FALSE) {
+                Bin5::unlock_data($sem);
+                ignore_user_abort(FALSE);
+                return (blocking_error(TRUE));
+            }
+                
+            $bri->garbage_manager(FALSE);
+                
+            Bin5::save_data($bri);
+            unset($bri);
+        }
+    }
+    log_main("infolock: U");
+    Bin5::unlock_data($sem);
     ignore_user_abort(FALSE);
-  }
-  else {
-    return (FALSE);
-  }
-  
-  if (($proxy_step = User::step_get($sess)) != FALSE) {
-    // log_rd2("Postget".$proxy_step."zizi");
+
+
+//     if  ($first_loop == TRUE) {
+
+//         if (($sem = Bin5::lock_data(TRUE, $table_idx)) != FALSE) { 
+//             // Aggiorna l'expire time lato server
+//             $S_load_stat['rU_first_loop']++;
+
+//             if (($user = Bin5_user::load_data($table_idx, $proxy_step['i'], $sess)) == FALSE) {
+//                 Bin5::unlock_data($sem);
+//                 ignore_user_abort(FALSE);
+//                 return (blocking_error(TRUE));
+//             }
+//             $user->lacc = $curtime;
+
+//             Bin5_user::save_data($user, $table_idx, $user->idx);
+            
+//             if (Bin5::garbage_time_is_expired($table_idx, $curtime)) {
+//                 log_only("F");
+                
+//                 $S_load_stat['wR_garbage']++;
+//                 if (($bri = Bin5::load_data($table_idx, $table_token)) == FALSE) {
+//                     Bin5::unlock_data($sem);
+//                     ignore_user_abort(FALSE);
+//                     return (blocking_error(TRUE));
+//                 }
+                
+//                 $bri->garbage_manager(FALSE);
+                
+//                 Bin5::save_data($bri);
+//                 unset($bri);
+//             }
+//             log_main("infolock: U");
+//             Bin5::unlock_data($sem);
+//             ignore_user_abort(FALSE);
+//         } // if (($sem = Bin5::lock_data(TRUE, $table ...
+//         else {
+//             ignore_user_abort(FALSE);
+            
+//             return ("sleep(gst,20000);|xstm.xhr_abort();");
+//         }
+        
+//         $first_loop = FALSE;
+//     } // if  ($first_loop == TRUE) {
     
     if ($cur_step == $proxy_step['s']) {
-      log_lock("P");
-      return (FALSE);
+        log_main("infolock: P");
+        return (FALSE);
     }
     else {
-      log_only2("R");
+        log_only2("R");
     }
-  }
-  else {
-    log_only2("R");
-  }
-  
-  if ($bri == FALSE) {
-    do {
-      ignore_user_abort(TRUE);
-      if (($sem = Briskin5::lock_data($table_idx)) == FALSE) 
-	break;
-      
-      log_lock("P");
-      if (($bri = &Briskin5::load_data($table_idx, $table_token)) == FALSE) 
-	break;
-    } while (0);
     
-    if ($sem != FALSE)
-      Briskin5::unlock_data($sem);
+    $S_load_stat['rU_heavy']++;
+    if ($user == FALSE) {
+        do {
+            ignore_user_abort(TRUE);
+            if (($sem = Bin5::lock_data(TRUE, $table_idx)) == FALSE) 
+                break;
+            
+            log_main("infolock: P");
+            if (($user = Bin5_user::load_data($table_idx, $proxy_step['i'], $sess)) == FALSE) {
+                break;
+            }
+        } while (0);
+        
+        if ($sem != FALSE)
+            Bin5::unlock_data($sem);
+        
+        ignore_user_abort(FALSE);
+        if ($user == FALSE) 
+            return (blocking_error(TRUE));
+    }
     
-    ignore_user_abort(FALSE);
-    if ($bri == FALSE) 
-      return (unrecerror());
-  }
-  
-  if (($user = &$bri->get_user($sess, $idx)) == FALSE) {
-    return (unrecerror());
-  }
-
-  /* Nothing changed, return. */
-  if ($cur_step == $user->step) 
-    return;
-
-  log_rd2("do other ++".$cur_stat."++".$user->stat."++".$cur_step."++".$user->step);
-
-  if ($cur_step == -1) {
-    // FUNZIONE from_scratch DA QUI 
-    ignore_user_abort(TRUE);
-    $sem = Briskin5::lock_data($table_idx);
-    $bri = &Briskin5::load_data($table_idx, $table_token);
-    if (($user = &$bri->get_user($sess, $idx)) == FALSE) {
-      Briskin5::unlock_data($sem);
-      ignore_user_abort(FALSE);
-      return (unrecerror());
+    /* Nothing changed, return. */
+    if ($cur_step == $user->step) 
+        return (FALSE);
+    
+    log_rd2("do other cur_stat[".$cur_stat."] user->stat[".$user->stat."] cur_step[".$cur_step."] user_step[".$user->step."]");
+
+    if ($cur_step == -1) {
+        /*
+         *  if $cur_step == -1 load the current state from the main struct
+         */
+        
+        /* unset the $user var to reload it from main structure */
+        unset($user);
+
+        ignore_user_abort(TRUE);
+        $sem = Bin5::lock_data(TRUE, $table_idx);
+        if (($bri = Bin5::load_data($table_idx, $table_token)) == FALSE) {
+            Bin5::unlock_data($sem);
+            ignore_user_abort(FALSE);
+            return (blocking_error(TRUE));
+        }
+        $S_load_stat['wR_minusone']++;
+
+        if (($user = $bri->get_user($sess, $idx)) == FALSE) {
+            Bin5::unlock_data($sem);
+            ignore_user_abort(FALSE);
+            return (blocking_error(TRUE));
+        }
+        if ($user->the_end == TRUE) {
+            log_rd2("main_check: the end".var_export(debug_backtrace()));
+            $is_page_streaming = TRUE;
+        }
+        
+        if ($user->trans_step != -1) {
+            log_rd2("TRANS USATO ".$user->trans_step);
+            $cur_step = $user->trans_step;
+            $user->trans_step = -1;
+            
+            Bin5::save_data($bri);
+            Bin5::unlock_data($sem);
+            ignore_user_abort(FALSE);
+        }
+        else {
+            log_rd2("TRANS NON ATTIVATO");
+            
+            //       ARRAY_POP DISABLED
+            //       while (array_pop($user->comm) != NULL);
+            //       // $user->step_inc(COMM_N + 1);
+            //       Bin5::save_data($bri);
+            
+            Bin5::unlock_data($sem);
+            ignore_user_abort(FALSE);
+        }
     }
-    if ($user->the_end) 
-      $is_page_streaming = TRUE;
-
-
-    if ($user->trans_step != -1) {
-      log_rd2("TRANS USATO ".$user->trans_step);
-      $cur_step = $user->trans_step;
-      $user->trans_step = -1;
-
-
-      Briskin5::save_data($bri);
-      Briskin5::unlock_data($sem);
-      ignore_user_abort(FALSE);
+    
+    if ($cur_step == -1) {
+        log_rd2("PRE-NEWSTAT.");
+        
+        /***************
+         *             *
+         *    TABLE    *
+         *             *
+         ***************/
+        if ($user->stat == "table") {      
+            $ret = show_table(&$bri,&$user,$user->step,FALSE,FALSE);
+            
+            log_rd2("SENDED TO THE STREAM: ".$ret);
+        }
+        log_rd2("NEWSTAT: ".$user->stat);
+        
+        $new_stat =  $user->stat;
+        $new_subst = $user->subst;
+        $new_step =  $user->step;
     }
     else {
-      log_rd2("TRANS NON ATTIVATO");
-
-//       ARRAY_POP DISABLED
-//       while (array_pop($user->comm) != NULL);
-//       // $user->step_inc(COMM_N + 1);
-//       Briskin5::save_data($bri);
-
-      Briskin5::unlock_data($sem);
-      ignore_user_abort(FALSE);
-    }
-  }
-      
-  if ($cur_step == -1) {
-    log_rd2("PRE-NEWSTAT.");
-
-    /***************
-     *             *
-     *    TABLE    *
-     *             *
-     ***************/
-    if ($user->stat == "table") {      
-      $ret = show_table(&$bri,&$user,$user->step,FALSE,FALSE);
-
-      log_rd2("SENDED TO THE STREAM: ".$ret);
-    }
-    log_rd2("NEWSTAT: ".$user->stat);
-
-    $new_stat =  $user->stat;
-    $new_subst = $user->subst;
-    $new_step =  $user->step;
-  }
-  else {
-    ignore_user_abort(TRUE);
-    $sem = Briskin5::lock_data($table_idx);
-    if (($bri = &Briskin5::load_data($table_idx, $table_token)) == FALSE) {
-      Briskin5::unlock_data($sem);
-      ignore_user_abort(FALSE);
-      return (unrecerror());
-    }
-    if (($user = &$bri->get_user($sess, $idx)) == FALSE) {
-      Briskin5::unlock_data($sem);
-      ignore_user_abort(FALSE);
-      return (unrecerror());
-    }
-    if ($cur_step < $user->step) {
-      do {
-	if ($cur_step + COMM_N < $user->step) {
-	  if (($cur_stat != $user->stat)) {
-	    $to_stat = $user->stat;
-	    Briskin5::unlock_data($sem);
-	    ignore_user_abort(FALSE);
-	    return (page_sync($user->sess, $to_stat == "table" ? "index.php" : "../index.php"));
-	  }
-	  log_rd2("lost history, refresh from scratch");
-	  $new_step = -1;
-	  break;
-	} 
-	for ($i = $cur_step ; $i < $user->step ; $i++) {
-	  $ii = $i % COMM_N;
-	  log_wr("TRY RET ".$i."  COMM_N ".COMM_N."  II ".$ii);
-	  $ret .= $user->comm[$ii];
-	}
-	$new_stat =  $user->stat;
-	$new_subst = $user->subst;
-	$new_step =  $user->step;
-      } while (0);
-
-      log_mop($user->step, 'bin::index_rd.php: after ret set');
-      
-      if ($user->the_end == TRUE) {
-	log_rd2("LOGOUT BYE BYE!!");
-	log_auth($user->sess, "Explicit logout.");
-	$tmp_sess = $user->sess;
-	$user->sess = "";
-	step_unproxy($tmp_sess);
-	
-	$user->name = "";
-	$user->the_end = FALSE;
-	
-	if ($user->subst == 'sitdown')
-	  $bri->room_wakeup(&$user);
-	else if ($user->subst == 'standup')
-	  $bri->room_outstandup(&$user);
-	else
-	  log_rd2("LOGOUT FROM WHAT ???");
-	  
-	Briskin5::save_data($bri);
-      }
-    }
-	  
-    Briskin5::unlock_data($sem);
-    ignore_user_abort(FALSE);
+        ignore_user_abort(TRUE);
+        $sem = Bin5::lock_data(TRUE, $table_idx);
+        // if (($user = &$bri->get_user($sess, $idx)) == FALSE) {
+        if (($user = Bin5_user::load_data($table_idx, $proxy_step['i'], $sess)) == FALSE) {
+            Bin5::unlock_data($sem);
+            ignore_user_abort(FALSE);
+            return (blocking_error(TRUE));
+        }
+        if ($cur_step < $user->step) {
+            do {
+                if ($cur_step + COMM_N < $user->step) {
+                    if (($cur_stat != $user->stat)) {
+                        $to_stat = $user->stat;
+                        Bin5::unlock_data($sem);
+                        ignore_user_abort(FALSE);
+                        return (page_sync($user->sess, $to_stat == "table" ? "index.php" : "../index.php"));
+                    }
+                    log_rd2("lost history, refresh from scratch");
+                    $new_step = -1;
+                    break;
+                } 
+                for ($i = $cur_step ; $i < $user->step ; $i++) {
+                    $ii = $i % COMM_N;
+                    log_wr("TRY RET ".$i."  COMM_N ".COMM_N."  II ".$ii);
+                    $ret .= $user->comm[$ii];
+                }
+                $new_stat =  $user->stat;
+                $new_subst = $user->subst;
+                $new_step =  $user->step;
+            } while (0);
+            
+            log_rd2($user->step, 'bin::index_rd.php: after ret set');
+            
+            if ($user->the_end == TRUE) {
+                log_rd2("LOGOUT BYE BYE!!");
+                log_auth($user->sess, "Explicit logout.");
+
+                unset($user);
+                
+                $S_load_stat['wR_the_end']++;
+                if (($bri = Bin5::load_data($table_idx, $table_token)) == FALSE) {
+                    Bin5::unlock_data($sem);
+                    ignore_user_abort(FALSE);
+                    return (blocking_error(TRUE));
+                }
+                if (($user = $bri->get_user($sess, $idx)) == FALSE) {
+                    Bin5::unlock_data($sem);
+                    ignore_user_abort(FALSE);
+                    return (blocking_error(TRUE));
+                }
+                
+                $tmp_sess = $user->sess;
+                $user->sess = "";
+                Bin5_user::unproxy_step($tmp_sess);
+                $user->name = "";
+                $user->the_end = FALSE;
+                
+                /* FIXME - and now ?? 
+                if ($user->subst == 'sitdown')
+                    $bri->room_wakeup($user);
+                else if ($user->subst == 'standup')
+                    $bri->room_outstandup($user);
+                else
+                    log_rd2("LOGOUT FROM WHAT ???");
+                */
+                Bin5::save_data($bri);
+            }
+        }
+        
+        Bin5::unlock_data($sem);
+        ignore_user_abort(FALSE);
   }
-
+  
   
   return ($ret);
 }
@@ -295,7 +394,7 @@ function maincheck($sess, $cur_stat, $cur_subst, $cur_step, &$new_stat, &$new_su
    step
 */
 
-$is_page_streaming =  (stristr($HTTP_USER_AGENT, "MSIE") || stristr($HTTP_USER_AGENT, "CHROME") ? TRUE : FALSE);
+$is_page_streaming =  (webservers_exceeded() || stristr($HTTP_USER_AGENT, "Mozilla/5.0 (Windows NT 6.1; rv:5.0)") || stristr($HTTP_USER_AGENT, "MSIE") || stristr($HTTP_USER_AGENT, "CHROME") ? TRUE : FALSE);
 
 header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
 header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); // Date in the past
@@ -303,11 +402,11 @@ header('Content-type: application/xml; charset="utf-8"',true);
 // header('Content-type: text/plain; charset="utf-8"',true);
 // header('Content-type: text/html; charset="utf-8"',true);
 
-if (!isset($myfrom))
-     $myfrom = "";
+if (!isset($from))
+     $from = "";
 if (!isset($subst))
      $subst = "";
-log_rd2("FROM OUTSIDE - STAT: ".$stat." SUBST: ".$subst." STEP: ".$step." MYFROM: ".$myfrom. "IS_PAGE:" . $is_page_streaming."USER_AGENT:".$HTTP_USER_AGENT);
+log_rd2("FROM OUTSIDE - STAT: ".$stat." SUBST: ".$subst." STEP: ".$step." FROM: ".$from. "IS_PAGE:" . $is_page_streaming."USER_AGENT:".$HTTP_USER_AGENT."  TABLE:".$table_idx);
 
 
 $endtime = time() + STREAM_TIMEOUT;
@@ -320,12 +419,12 @@ for ($i = 0 ; time() < $endtime ; $i++) {
   $pre_main = gettimeofday(TRUE);
   if (($ret = maincheck($sess, $old_stat, $old_subst, $old_step, &$stat, &$subst, &$step, $table_idx, $table_token)) != FALSE) {
     echo '@BEGIN@';
-    // log_rd2(sprintf("\nSESS: [%s]\nOLD_STAT: [%s] OLD_SUBST: [%s] OLD_STEP: [%s] \nSTAT: [%s] SUBST: [%s] STEP: [%s] \nCOMM: [%s]\n", $sess, $old_stat, $old_subst, $old_step, $stat, $subst, $step, $ret));
+    log_rd2(sprintf("\nSESS: [%s]\nOLD_STAT: [%s] OLD_SUBST: [%s] OLD_STEP: [%s] \nSTAT: [%s] SUBST: [%s] STEP: [%s] \nCOMM: [%s]\n", $sess, $old_stat, $old_subst, $old_step, $stat, $subst, $step, $ret));
     echo "$ret";
     echo ' @END@'; 
     log_send("EXT_STEP: ".$ext_step." ENDTIME: [".$endtime."] ".$ret);
-    flush();
-    log_mop(0, 'bin::index_rd.php: after flush (begin: '.sprintf("%f", $pre_main).')');
+    mop_flush();
+    log_rd2(0, 'bin::index_rd.php: after mop_flush (begin: '.sprintf("%f", $pre_main).')');
     if ($is_page_streaming)
       break;
   }
@@ -337,8 +436,21 @@ for ($i = 0 ; time() < $endtime ; $i++) {
   if (($i % 10) == 0) {
     // log_rd2("TIME: ".time());
     echo '_';
-    flush();
+    mop_flush();
   }
+ }
+
+$s = ""; 
+$tr = 0;
+$tw = 0;
+foreach ($S_load_stat as $key => $value) {
+    $s .= sprintf("%s: %d - ", $key, $value);
+    if (substr($key, 0, 1) == "w")
+        $tw += $value;
+    else if (substr($key, 0, 1) == "r")
+        $tr += $value;
 }
+$s = sprintf("briskin5/index_rd.php stats:  R: %d W: %d - %s", $tr, $tw, $s);
+log_crit($s);
 
 ?>