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authorWilliam Joye <wjoye@cfa.harvard.edu>2017-10-26 16:45:12 (GMT)
committerWilliam Joye <wjoye@cfa.harvard.edu>2017-10-26 16:45:12 (GMT)
commitdd1df8d8538f275b17e0d9d50dca19f4d44595fd (patch)
tree624bc07023b33668147eaa9097279c6fc92b4e48 /xpa/doc/pod/xpapoll.pod
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parent6054f36bb658916bd231b9002efb94444e2871c8 (diff)
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Merge commit '6054f36bb658916bd231b9002efb94444e2871c8' as 'xpa'
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+=pod
+
+=head1 NAME
+
+
+
+B<XPAPoll: execute existing XPA requests>
+
+
+
+=head1 SYNOPSIS
+
+
+
+
+
+ #include <xpa.h>
+
+ int XPAPoll(int msec, int maxreq);
+
+
+
+
+
+=head1 DESCRIPTION
+
+
+
+
+It is sometimes desirable to implement a polling loop, i.e., where one
+checks for and processes XPA requests without blocking. For this
+situation, use the XPAPoll() routine:
+
+ XPAPoll(int msec, int maxreq);
+
+
+The XPAPoll() routine will perform XPAAddSelect() and select(), but with a
+timeout specified in millisecs by the msec argument. If one or more
+XPA requests are made before the timeout expires, the XPAProcessSelect()
+routine is called to process those requests. The maxreq value determines
+how many requests will be processed: if maxreq < 0, then no events are
+processed, but instead, the return value indicates the number of events
+that are pending. If maxreq == 0, then all currently pending requests
+will be processed. Otherwise, up to maxreq requests will be processed.
+(The most usual values for maxreq are 0 to process all requests and 1
+to process one request).
+
+
+
+
+=head1 SEE ALSO
+
+
+
+See xpa(n) for a list of XPA help pages
+
+
+=cut