(PECL eio >= 0.0.1dev)
eio_fdatasync — Synchronize a file's in-core state with storage device
$fd,$pri = EIO_PRI_DEFAULT,$callback = NULL,$data = NULLeio_fdatasync() synchronizes a file's in-core state with storage device.
fdStream, Socket resource, or numeric file descriptor, e.g. returned by eio_open().
pri請(qǐng)求的優(yōu)先級(jí):EIO_PRI_DEFAULT,EIO_PRI_MIN,EIO_PRI_MAX 或 null。如果是
null,pri 將設(shè)為
EIO_PRI_DEFAULT。
callback
callback
函數(shù)在請(qǐng)求完成時(shí)被調(diào)用。其應(yīng)匹配一下原型:
void callback(mixed $data, int $result[, resource $req]);
data傳遞給請(qǐng)求的用戶數(shù)據(jù)。
result針對(duì)請(qǐng)求的結(jié)果的值。通常是相應(yīng)的系統(tǒng)調(diào)用返回的值。
req可選的請(qǐng)求資源,可被 eio_get_last_error() 之類的函數(shù)使用。
data
Arbitrary variable passed to callback.
eio_fdatasync() returns request resource on success, 或者在失敗時(shí)返回 false.