Wait for completion of an I/O request
Source position: exec.pas line 1295
function WaitIO( |
ioRequest: pIORequest |
):ShortInt; |
ioRequest |
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A pointer to an I/O request block |
A zero if successful, else an error is returned (a sign extended copy of io_Error).
This function waits for the specified I/O request to complete, then removes it from the replyport. If the I/O has already completed, this function will return immediately.
This function should be used with care, as it does not return until the I/O request completes; if the I/O never completes, this function will never return, and your task will hang. If this situation is a possibility, it is safer to use the Wait() function. Wait() will return return when any of a specified set of signal is received. This is how I/O timeouts can be properly handled.
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Perform an I/O request and wait for its finish |
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Initiate an I/O command |
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Check status on an I/O request |
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Attempt to abort an in-progress I/O request |