src/rx/rx_multi.h

   1 /*
   2  * Copyright 2000, International Business Machines Corporation and others.
   3  * All Rights Reserved.
   4  *
   5  * This software has been released under the terms of the IBM Public
   6  * License.  For details, see the LICENSE file in the top-level source
   7  * directory or online at http://www.openafs.org/dl/license10.html
   8  */
   9
  10 #ifndef _RX_MULTI_
  11 #define _RX_MULTI_
  12
  13 struct multi_handle {
  14     int nConns;
  15     struct rx_call **calls;
  16     short *ready;
  17     short nReady;               /* XXX UNALIGNED */
  18     short *nextReady;
  19     short *firstNotReady;
  20 #ifdef RX_ENABLE_LOCKS
  21     afs_kmutex_t lock;
  22     afs_kcondvar_t cv;
  23 #endif                          /* RX_ENABLE_LOCKS */
  24 };
  25
  26 #define multi_Rx(conns, nConns) \
  27     do {\
  28         struct multi_handle *multi_h;\
  29         int multi_i;\
  30         int multi_i0;\
  31         afs_int32 multi_error;\
  32         struct rx_call *multi_call;\
  33         multi_h = multi_Init(conns, nConns);\
  34         for (multi_i0 = multi_i = 0; ; multi_i = multi_i0 )
  35
  36 #define multi_Body(startProc, endProc)\
  37         if (multi_h->nextReady == multi_h->firstNotReady && multi_i < multi_h->nConns) {\
  38             multi_call = multi_h->calls[multi_i];\
  39             if (multi_call) {\
  40                 startProc;\
  41                 rx_FlushWrite(multi_call);\
  42             }\
  43             multi_i0++;  /* THIS is the loop variable!! */\
  44             continue;\
  45         }\
  46         if ((multi_i = multi_Select(multi_h)) < 0) break;\
  47         multi_call = multi_h->calls[multi_i];\
  48         multi_error = rx_EndCall(multi_call, endProc);\
  49         multi_h->calls[multi_i] = (struct rx_call *) 0
  50
  51 #define multi_Abort break
  52
  53 #define multi_End\
  54         multi_Finalize(multi_h);\
  55     } while (0)
  56
  57 /* Ignore remaining multi RPC's */
  58 #define multi_End_Ignore\
  59         multi_Finalize_Ignore(multi_h);\
  60     } while (0)
  61
  62 #endif /* _RX_MULTI_     End of rx_multi.h */