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       ixp_pending_write,        ixp_pending_print,        ixp_pending_vprint,
       ixp_pending_pushfid,       ixp_pending_clunk,        ixp_pending_flush,
       ixp_pending_respond, IxpPending


       #include <ixp_srvutil.h>

       void ixp_pending_write(IxpPending *pending, const char *dat, long ndat);

       int ixp_pending_print(IxpPending *pending, const char *fmt, ...);

       int ixp_pending_vprint(IxpPending *pending, const char *fmt, va_list ap);

       void ixp_pending_pushfid(IxpPending *pending, IxpFid *fid);

       bool ixp_pending_clunk(Ixp9Req *req);

       void ixp_pending_flush(Ixp9Req *req);

       void ixp_pending_respond(Ixp9Req *req);

       typedef struct IxpPending       IxpPending;
       struct IxpPending {
               /* Private members */


       These  functions  aid  in  writing  virtual files used for broadcasting
       events or writing data when it becomes available. When  a  file  to  be
       used  with  these  functions  is  opened, ixp_pending_pushfid should be
       called with its IxpFid(3)  as  an  argument.  This  sets  the  IxpFid's
       pending  member  to  true.   Thereafter, for each file with its pending
       member  set,  ixp_pending_respond  should  be  called  for  each  TRead
       request,    ixp_pending_clunk    for    each    TClunk   request,   and
       ixp_pending_flush for each TFlush request.

       ixp_pending_write queues the data in dat of length ndat to  be  written
       to  each  currently  pending fid in pending. If there is a read request
       pending for a given fid, the data is written immediately. Otherwise, it
       is  written  the  next time ixp_pending_respond is called. Likewise, if
       there is data queued when ixp_pending_respond is called, it is  written
       immediately, otherwise the request is queued.

       ixp_pending_print  and  ixp_pending_vprint call ixp_pending_write after
       formatting their arguments with ixp_vsmprint(3).

       The IxpPending data structure  is  opaque  and  should  be  initialized
       zeroed before using these functions for the first time.


       ixp_pending_clunk returns true if pending has any more pending IxpFids.

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