bryan@chroma.UUCP (Bryan Ford) (05/12/89)
The CloseDevice function CAN INDEED call AmigaDOS. This would happen if,
when you CloseDevice(), the delayed-expunge flag is set (somebody
previously tried to expunge it), and you're the last user of the device
(UseCount decremented to zero), and the device is loaded. In this case,
the OS will call UnLoadSeg() to free the SegList used by the device, which
is an AmigaDOS function.
Although this situation will be quite rare, it IS possible, and should be
avoided. Also, this applies equally to libraries, since they are
manipulated in exactly the same way.
So: DON'T OPEN, CLOSE, OR EXPUNGE LIBRARIES OR DEVICES FROM A TASK.
As usual, I may be wrong, since I didn't program the operating system.
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