(PECL eio >= 0.0.1dev) Does nothing, except go through the whole request cycle.
(PECL eio >= 0.0.1dev) Createsa request group.
(PECL eio >= 0.0.1dev) Transfer data between file descriptors
(PECL eio >= 0.0.1dev) Set maximum number of idle threads.
(PECL eio >= 0.0.1dev) Create a hardlink for file
(PECL eio >= 0.0.1dev) Get file system statistics
(PECL eio >= 0.0.1dev) Get file status resource
(PECL eio >= 0.0.1dev) Change file ownership
(PECL eio >= 0.0.1dev) Returns number of not-yet handled requests
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