我究竟如何检查文件是否被锁定？我有这个功能,但无论我做什么,它都会返回1：
sub is_file_locked
{
my $theFile;
my $theRC;
($theFile) = @_;
$theRC = open(HANDLE,$theFile);
$theRC = flock(HANDLE,LOCK_EX|LOCK_NB);
close(HANDLE);
return !$theRC;
}
解决方法
您已在读取模式和LOCK_EX
isn’t meant to be used that way中打开$theFile.
Note that the fcntl(2) emulation of flock(3) requires that FILEHANDLE be open with read intent to use LOCK_SH and requires that it be open with write intent to use LOCK_EX.