[ViewVC] Diff of: cvs/IO-AIO/README

Comparing IO-AIO/README (file contents):
Revision 1.23 by root, Mon Jan 22 15:59:52 2007 UTC vs.
Revision 1.24 by root, Sun Aug 5 16:45:54 2007 UTC

     faster on a RAID volume or over NFS when you do a number of stat
     operations concurrently.
     While most of this works on all types of file descriptors (for example
     sockets), using these functions on file descriptors that support
-    nonblocking operation (again, sockets, pipes etc.) is very inefficient
+    nonblocking operation (again, sockets, pipes etc.) is very inefficient.
-    or might not work (aio_read fails on sockets/pipes/fifos). Use an event
-    loop for that (such as the Event module): IO::AIO will naturally fit
+    Use an event loop for that (such as the Event module): IO::AIO will
-    into such an event loop itself.
+    naturally fit into such an event loop itself.
     In this version, a number of threads are started that execute your
     requests and signal their completion. You don't need thread support in
     perl, and the threads created by this module will not be visible to
     perl. In the future, this module might make use of the native aio
     not well-supported or restricted (GNU/Linux doesn't allow them on normal
     files currently, for example), and they would only support aio_read and
     aio_write, so the remaining functionality would have to be implemented
     using threads anyway.
-    Although the module will work with in the presence of other (Perl-)
+    Although the module will work in the presence of other (Perl-) threads,
-    threads, it is currently not reentrant in any way, so use appropriate
+    it is currently not reentrant in any way, so use appropriate locking
-    locking yourself, always call "poll_cb" from within the same thread, or
+    yourself, always call "poll_cb" from within the same thread, or never
-    never call "poll_cb" (or other "aio_" functions) recursively.
+    call "poll_cb" (or other "aio_" functions) recursively.
   EXAMPLE
     This is a simple example that uses the Event module and loads
     /etc/passwd asynchronously:
         This is supposed to be a bug in the API, so that might change. It's
         therefore best to avoid this function.
     aio_read $fh,$offset,$length, $data,$dataoffset, $callback->($retval)
     aio_write $fh,$offset,$length, $data,$dataoffset, $callback->($retval)
-        Reads or writes "length" bytes from the specified "fh" and "offset"
+        Reads or writes $length bytes from the specified $fh and $offset
-        into the scalar given by "data" and offset "dataoffset" and calls
+        into the scalar given by $data and offset $dataoffset and calls the
-        the callback without the actual number of bytes read (or -1 on
+        callback without the actual number of bytes read (or -1 on error,
-        error, just like the syscall).
+        just like the syscall).
+        If $offset is undefined, then the current file offset will be used
+        (and updated), otherwise the file offset will not be changed by
+        these calls.
+        If $length is undefined in "aio_write", use the remaining length of
+        $data.
+        If $dataoffset is less than zero, it will be counted from the end of
+        $data.
         The $data scalar *MUST NOT* be modified in any way while the request
-        is outstanding. Modifying it can result in segfaults or WW3 (if the
+        is outstanding. Modifying it can result in segfaults or World War
-        necessary/optional hardware is installed).
+        III (if the necessary/optional hardware is installed).
         Example: Read 15 bytes at offset 7 into scalar $buffer, starting at
         offset 0 within the scalar:
            aio_read $fh, 7, 15, $buffer, 0, sub {
            aio_stat "/etc/passwd", sub {
               $_[0] and die "stat failed: $!";
               print "size is ", -s _, "\n";
            };
+    aio_utime $fh_or_path, $atime, $mtime, $callback->($status)
+        Works like perl's "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 (basically touch(1)):
+           aio_utime "path", undef, undef;
+           # set atime to current time and mtime to beginning of the epoch:
+           aio_utime "path", time, undef; # undef==0
+    aio_chown $fh_or_path, $uid, $gid, $callback->($status)
+        Works like perl's "chown" function, except that "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;
+    aio_truncate $fh_or_path, $offset, $callback->($status)
+        Works like truncate(2) or ftruncate(2).
+    aio_chmod $fh_or_path, $mode, $callback->($status)
+        Works like perl's "chmod" function.
     aio_unlink $pathname, $callback->($status)
         Asynchronously unlink (delete) a file and call the callback with the
         result code.
     aio_mknod $path, $mode, $dev, $callback->($status)

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Comparing IO-AIO/README (file contents): Revision 1.23 by root, Mon Jan 22 15:59:52 2007 UTC vs. Revision 1.24 by root, Sun Aug 5 16:45:54 2007 UTC

Diff Legend

Comparing IO-AIO/README (file contents):
Revision 1.23 by root, Mon Jan 22 15:59:52 2007 UTC vs.
Revision 1.24 by root, Sun Aug 5 16:45:54 2007 UTC