eio_grp
(PECL eio >= 0.0.1dev)
eio_grp — Createsa request group.
Description
eio_grp() creates a request group.
Parameters
-
callback
-
callback
function is called when the request is done. It should match the following prototype:void callback(mixed $data, int $result[, resource $req]);
-
data
-
is custom data passed to the request.
-
result
-
request-specific result value; basically, the value returned by corresponding system call.
-
req
-
is optional request resource which can be used with functions like eio_get_last_error()
-
-
data
-
Arbitrary variable passed to
callback
.
Return Values
eio_grp() returns request group resource on success or FALSE
on error.
Examples
Example #1 eio_grp() example
<?php
$temp_filename = dirname(__FILE__) ."/eio-file.tmp";
$fp = fopen($temp_filename, "w");
fwrite($fp, "some data");
fclose($fp);
$my_file_fd = NULL;
/* Is called when the group requests are done */
function my_grp_done($data, $result) {
// Remove the file, if it still exists
@unlink($data);
}
/* Is called when the temporary file is opened */
function my_grp_file_opened_callback($data, $result) {
global $my_file_fd, $grp;
$my_file_fd = $result;
$req = eio_read($my_file_fd, 4, 0,
EIO_PRI_DEFAULT, "my_grp_file_read_callback");
eio_grp_add($grp, $req);
}
/* Is called when the file is read */
function my_grp_file_read_callback($data, $result) {
global $my_file_fd, $grp;
var_dump($result);
// Create request to close the file
$req = eio_close($my_file_fd);
// Add request to the group
eio_grp_add($grp, $req);
}
// Create request group
$grp = eio_grp("my_grp_done", $temp_filename);
// Create request
$req = eio_open($temp_filename, EIO_O_RDWR | EIO_O_APPEND , NULL,
EIO_PRI_DEFAULT, "my_grp_file_opened_callback", NULL);
// Add request to the group
eio_grp_add($grp, $req);
// Process requests
eio_event_loop();
?>
The above example will output something similar to:
string(4) "some"
See Also
- eio_grp_cancel
- eio_grp_add
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Расширения для управления процессами программ
- Eio
- eio_busy
- eio_cancel
- eio_chmod
- eio_chown
- eio_close
- eio_custom
- eio_dup2
- eio_event_loop
- eio_fallocate
- eio_fchmod
- eio_fchown
- eio_fdatasync
- eio_fstat
- eio_fstatvfs
- eio_fsync
- eio_ftruncate
- eio_futime
- eio_get_event_stream
- eio_get_last_error
- eio_grp_add
- eio_grp_cancel
- eio_grp_limit
- eio_grp
- eio_init
- eio_link
- eio_lstat
- eio_mkdir
- eio_mknod
- eio_nop
- eio_npending
- eio_nready
- eio_nreqs
- eio_nthreads
- eio_open
- eio_poll
- eio_read
- eio_readahead
- eio_readdir
- eio_readlink
- eio_realpath
- eio_rename
- eio_rmdir
- eio_seek
- eio_sendfile
- eio_set_max_idle
- eio_set_max_parallel
- eio_set_max_poll_reqs
- eio_set_max_poll_time
- eio_set_min_parallel
- eio_stat
- eio_statvfs
- eio_symlink
- eio_sync_file_range
- eio_sync
- eio_syncfs
- eio_truncate
- eio_unlink
- eio_utime
- eio_write
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