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io_submit()函数 Unix/Linux

io_submit - 提交处理异步I/ O模块

内容简介

#include <libaio.h>

标签 描述
long io_submit (aio_context_t ctx_id, long nr, struct iocb **iocbpp);

描述

io_submit() queues nr I/O request blocks for processing in the AIO context ctx_id.iocbpp should be an array of nr AIO request blocks, which will be submitted to contextctx_id.

返回值

io_submit() returns the number of iocbs submitted and 0 if nr is zero.

错误

标签 描述
EINVAL The aio_context specified by ctx_id is invalid. nr is less than 0. The iocb at *iocbpp[0] is not properly initialized, or the operation specified is invalid for the file descriptor in the iocb.

 

EFAULT One of the data structures yiibais to invalid data.

 

EBADF The file descriptor specified in the first iocb is invalid.

 

EAGAIN Insufficient resources are available to queue any iocbs.

 

ENOSYS io_submit() is not implemented on this architecture.

 

遵循于

io_submit() 是Linux特有的,并应在该旨在是可移植的程序不被使用。

版本

The asynchronous I/O system calls first appeared in Linux 2.5, August 2002.

另请参阅

io_setup(2), io_destroy(2), io_getevents(2), io_cancel(2).

注意

The asynchronous I/O system calls were written by Benjamin LaHaise.

作者

Kent Yoder.