php cron jobs重叠

时间:2011-06-29 07:19:03

标签: php perl translation

您好我几个月前在perl写了一个用于检查作业重叠的脚本

use Fcntl ':flock';
INIT {
    my $waitcount=12; # possible attemtps to run script
    my $waitseconds=300; # wait for $waitseconds each attempt
    my $lockstatus=0;#no lock was attained
    while ($waitcount > 0){
          if (open LH, $0){
                while ($waitcount > 0){
                   if (flock LH, LOCK_EX|LOCK_NB){
                       $waitcount=0;#signal end of waiting
                       $lockstatus=1;#lock was attained
                   }
                   else{
                       --$waitcount;#decrement waitcount
                       print "waiting to be able to lock $0\n";
                       sleep $waitseconds;
                   }#end else
                }#end while
          }#end if
          else{
              --$waitcount;#decrement waitcount
              print "waiting to be able to open $0\n";
              sleep $waitseconds;
          }#end else
    }#end while
    if ($lockstatus == 0){
         die "no lock was attained\n";
    }#end if
}

我想知道我们是否可以在php中做类似的事情。

如何与运行部分php作业的当前php代码集成?

1 个答案:

答案 0 :(得分:0)

当然可以。您使用的唯一特定功能是“flock”,也可以在php中使用(参见flock doc)。

其他步骤非常相似:

  • 将“my”替换为“$”
  • 带有while(1)循环的init块
  • 死于退出
  • 和if case to php representation