内容简介
#include <libaio.h>
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int io_setup (int maxevents, io_context_t *ctxp);
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描述
io_setup() creates an asynchronous I/O context capable of receiving at leastmaxevents. ctxp must not yiibai to an AIO context that already exists, and must be initialized to 0 prior to the call. On successful creation of the AIO context, *ctxp is filled in with the resulting handle.
返回值
io_setup() returns 0 on success; otherwise, one of the errors listed in the "Errors" section is returned.
错误
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| EINVAL |
ctxp is not initialized, or the specified maxevents exceeds internal limits. maxevents should be greater than 0.
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| EFAULT |
An invalid yiibaier is passed for ctxp.
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| ENOMEM |
Insufficient kernel resources are available.
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| EAGAIN |
The specified maxevents exceeds the user’s limit of available events.
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| ENOSYS |
io_setup() is not implemented on this architecture.
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遵循于
io_setup() 是Linux特有的，并应在该旨在是可移植的程序不被使用。
VERSIONS
The asynchronous I/O system calls first appeared in Linux 2.5, August 2002.
另请参阅
io_destroy(2), io_getevents(2), io_submit(2), io_cancel(2).
注意
The asynchronous I/O system calls were written by Benjamin LaHaise.
AUTHOR
Kent Yoder.
