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NAME="TCPIP-OPENBSD-ENHANCED-SELECT"
>Enhanced Select()</A
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>The network stack supports an extension to the standard select
semantics which allows all threads that are waiting to be restarted
even if the select conditions are not satisfied.</P
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>The standard select() API: </P
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>int
<CODE
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>select</CODE
>(int nfd,
fd_set *in, fd_set *out, fd_set *ex,
struct timeval *tv); </PRE
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>does not support the restart.</P
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>The additional API: </P
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>int
<CODE
CLASS="FUNCTION"
>cyg_select_with_abort</CODE
>(int nfd,
fd_set *in, fd_set *out, fd_set *ex,
struct timeval *tv)</PRE
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>behaves exactly as select() with the additional feature that
a call to</P
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>void <CODE
CLASS="FUNCTION"
>cyg_select_abort</CODE
>(void)</PRE
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>will cause all threads waiting in any
<CODE
CLASS="FUNCTION"
>cyg_select_with_abort()</CODE
> call
to cease waiting and continue execution.</P
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