[ViewVC] Diff of: cvs/IO-AIO/AIO.pm

Comparing IO-AIO/AIO.pm (file contents):
Revision 1.100 by root, Sun Jan 7 21:36:58 2007 UTC vs.
Revision 1.106 by root, Fri Jun 1 05:51:21 2007 UTC

 use strict 'vars';
 use base 'Exporter';
 BEGIN {
-   our $VERSION = '2.32';
+   our $VERSION = '2.4';
    our @AIO_REQ = qw(aio_sendfile aio_read aio_write aio_open aio_close aio_stat
                      aio_lstat aio_unlink aio_rmdir aio_readdir aio_scandir aio_symlink
                      aio_readlink aio_fsync aio_fdatasync aio_readahead aio_rename aio_link
-                     aio_move aio_copy aio_group aio_nop aio_mknod aio_load aio_rmtree);
+                     aio_move aio_copy aio_group aio_nop aio_mknod aio_load aio_rmtree aio_mkdir
+                     aio_chown aio_chmod aio_utime);
    our @EXPORT = (@AIO_REQ, qw(aioreq_pri aioreq_nice aio_block));
    our @EXPORT_OK = qw(poll_fileno poll_cb poll_wait flush
                        min_parallel max_parallel max_idle
                        nreqs nready npending nthreads
                        max_poll_time max_poll_reqs);
       aio_read $_[0], ..., sub {
          ...
       };
    };
 =item aioreq_nice $pri_adjust
 Similar to C<aioreq_pri>, but subtracts the given value from the current
 priority, so the effect is cumulative.
 =item aio_open $pathname, $flags, $mode, $callback->($fh)
 Asynchronously open or create a file and call the callback with a newly
 created filehandle for the file.
 list. They are the same as used by C<sysopen>.
 Likewise, C<$mode> specifies the mode of the newly created file, if it
 didn't exist and C<O_CREAT> has been given, just like perl's C<sysopen>,
 except that it is mandatory (i.e. use C<0> if you don't create new files,
-and C<0666> or C<0777> if you do).
+and C<0666> or C<0777> if you do). Note that the C<$mode> will be modified
+by the umask in effect then the request is being executed, so better never
+change the umask.
 Example:
    aio_open "/etc/passwd", O_RDONLY, 0, sub {
       if ($_[0]) {
       } else {
          die "open failed: $!\n";
       }
    };
 =item aio_close $fh, $callback->($status)
 Asynchronously close a file and call the callback with the result
 code. I<WARNING:> although accepted, you should not pass in a perl
 filehandle here, as perl will likely close the file descriptor another
 C<close> or just let filehandles go out of scope.
 This is supposed to be a bug in the API, so that might change. It's
 therefore best to avoid this function.
 =item aio_read  $fh,$offset,$length, $data,$dataoffset, $callback->($retval)
 =item aio_write $fh,$offset,$length, $data,$dataoffset, $callback->($retval)
 Reads or writes C<length> bytes from the specified C<fh> and C<offset>
    aio_read $fh, 7, 15, $buffer, 0, sub {
       $_[0] > 0 or die "read error: $!";
       print "read $_[0] bytes: <$buffer>\n";
    };
 =item aio_sendfile $out_fh, $in_fh, $in_offset, $length, $callback->($retval)
 Tries to copy C<$length> bytes from C<$in_fh> to C<$out_fh>. It starts
 reading at byte offset C<$in_offset>, and starts writing at the current
 C<$in_fh> than are written, and there is no way to find out how many
 bytes have been read from C<aio_sendfile> alone, as C<aio_sendfile> only
 provides the number of bytes written to C<$out_fh>. Only if the result
 value equals C<$length> one can assume that C<$length> bytes have been
 read.
 =item aio_readahead $fh,$offset,$length, $callback->($retval)
 C<aio_readahead> populates the page cache with data from a file so that
 subsequent reads from that file will not block on disk I/O. The C<$offset>
 file. The current file offset of the file is left unchanged.
 If that syscall doesn't exist (likely if your OS isn't Linux) it will be
 emulated by simply reading the data, which would have a similar effect.
 =item aio_stat  $fh_or_path, $callback->($status)
 =item aio_lstat $fh, $callback->($status)
 Works like perl's C<stat> or C<lstat> in void context. The callback will
    aio_stat "/etc/passwd", sub {
       $_[0] and die "stat failed: $!";
       print "size is ", -s _, "\n";
    };
+=item aio_utime $fh_or_path, $atime, $mtime, $callback->($status)
+Works like perl's C<utime> function (including the special case of $atime
+and $mtime being undef). Fractional times are supported if the underlying
+syscalls support them.
+When called with a pathname, uses utimes(2) if available, otherwise
+utime(2). If called on a file descriptor, uses futimes(2) if available,
+otherwise returns ENOSYS, so this is not portable.
+Examples:
+   # set atime and mtime to current time:
+   aio_utime "path", undef, undef;
+   # set atime to current time and mtime to beginning of the epoch:
+   aio_utime "path", time, undef; # undef==0
+=item aio_chown $fh_or_path, $uid, $gid, $callback->($status)
+Works like perl's C<chown> function, except that C<undef> for either $uid
+or $gid is being interpreted as "do not change" (but -1 can also be used).
+Examples:
+   # same as "chown root path" in the shell:
+   aio_chown "path", 0, -1;
+   # same as above:
+   aio_chown "path", 0, undef;
+=item aio_chmod $fh_or_path, $mode, $callback->($status)
+Works like perl's C<chmod> function.
 =item aio_unlink $pathname, $callback->($status)
 Asynchronously unlink (delete) a file and call the callback with the
 result code.
 =item aio_mknod $path, $mode, $dev, $callback->($status)
 [EXPERIMENTAL]
 Asynchronously create a device node (or fifo). See mknod(2).
 The only (POSIX-) portable way of calling this function is:
    aio_mknod $path, IO::AIO::S_IFIFO | $mode, 0, sub { ...
 =item aio_link $srcpath, $dstpath, $callback->($status)
 Asynchronously create a new link to the existing object at C<$srcpath> at
 the path C<$dstpath> and call the callback with the result code.
 =item aio_symlink $srcpath, $dstpath, $callback->($status)
 Asynchronously create a new symbolic link to the existing object at C<$srcpath> at
 the path C<$dstpath> and call the callback with the result code.
 =item aio_readlink $path, $callback->($link)
 Asynchronously read the symlink specified by C<$path> and pass it to
 the callback. If an error occurs, nothing or undef gets passed to the
 callback.
 =item aio_rename $srcpath, $dstpath, $callback->($status)
 Asynchronously rename the object at C<$srcpath> to C<$dstpath>, just as
 rename(2) and call the callback with the result code.
+=item aio_mkdir $pathname, $mode, $callback->($status)
+Asynchronously mkdir (create) a directory and call the callback with
+the result code. C<$mode> will be modified by the umask at the time the
+request is executed, so do not change your umask.
 =item aio_rmdir $pathname, $callback->($status)
 Asynchronously rmdir (delete) a directory and call the callback with the
 result code.
 =item aio_readdir $pathname, $callback->($entries)
 Unlike the POSIX call of the same name, C<aio_readdir> reads an entire
 directory (i.e. opendir + readdir + closedir). The entries will not be
 sorted, and will B<NOT> include the C<.> and C<..> entries.
 The callback a single argument which is either C<undef> or an array-ref
 with the filenames.
 =item aio_load $path, $data, $callback->($status)
 This is a composite request that tries to fully load the given file into
 memory. Status is the same as with aio_read.
       my $pri = aioreq_pri;
       my $grp = aio_group $cb;
       aioreq_pri $pri;
       add $grp aio_open $path, O_RDONLY, 0, sub {
-         my ($fh) = @_
+         my $fh = shift
             or return $grp->result (-1);
          aioreq_pri $pri;
          add $grp aio_read $fh, 0, (-s $fh), $$data, 0, sub {
             $grp->result ($_[0]);
 Strictly equivalent to:
    IO::AIO::poll_wait, IO::AIO::poll_cb
       while IO::AIO::nreqs;
+=back
 =head3 CONTROLLING THE NUMBER OF THREADS
+=over
 =item IO::AIO::min_parallel $nthreads
 Set the minimum number of AIO threads to C<$nthreads>. The current
 default is C<8>, which means eight asynchronous operations can execute
 You can still queue as many requests as you want. Therefore,
 C<max_oustsanding> is mainly useful in simple scripts (with low values) or
 as a stop gap to shield against fatal memory overflow (with large values).
+=back
 =head3 STATISTICAL INFORMATION
+=over
 =item IO::AIO::nreqs
 Returns the number of requests currently in the ready, execute or pending
 states (i.e. for which their callback has not been invoked yet).

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Comparing IO-AIO/AIO.pm (file contents): Revision 1.100 by root, Sun Jan 7 21:36:58 2007 UTC vs. Revision 1.106 by root, Fri Jun 1 05:51:21 2007 UTC

Diff Legend

Comparing IO-AIO/AIO.pm (file contents):
Revision 1.100 by root, Sun Jan 7 21:36:58 2007 UTC vs.
Revision 1.106 by root, Fri Jun 1 05:51:21 2007 UTC