include/ais_util.h

   1 /*
   2  * Copyright (c) 2002-2005 MontaVista Software, Inc.
   3  *
   4  * All rights reserved.
   5  *
   6  * Author: Steven Dake (sdake@mvista.com)
   7  *
   8  * This software licensed under BSD license, the text of which follows:
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions are met:
  12  *
  13  * - Redistributions of source code must retain the above copyright notice,
  14  *   this list of conditions and the following disclaimer.
  15  * - Redistributions in binary form must reproduce the above copyright notice,
  16  *   this list of conditions and the following disclaimer in the documentation
  17  *   and/or other materials provided with the distribution.
  18  * - Neither the name of the MontaVista Software, Inc. nor the names of its
  19  *   contributors may be used to endorse or promote products derived from this
  20  *   software without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  26  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  32  * THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34 #ifndef AIS_UTIL_H_DEFINED
  35 #define AIS_UTIL_H_DEFINED
  36
  37 #include <pthread.h>
  38 #include <sys/poll.h>
  39 #include <sys/socket.h>
  40
  41 #include <ipc_gen.h>
  42
  43 /* Debug macro
  44  */
  45 #ifdef DEBUG
  46         #define DPRINT(s) printf s
  47 #else
  48         #define DPRINT(s)
  49 #endif
  50
  51 #ifdef SO_NOSIGPIPE
  52 #ifndef MSG_NOSIGNAL
  53 #define MSG_NOSIGNAL 0
  54 #endif
  55 void socket_nosigpipe(int s);
  56 #else
  57 #define socket_nosigpipe(s)
  58 #endif
  59
  60 struct saHandleDatabase {
  61         unsigned int handleCount;
  62         struct saHandle *handles;
  63         pthread_mutex_t mutex;
  64         void (*handleInstanceDestructor) (void *);
  65 };
  66
  67
  68 struct saVersionDatabase {
  69         int versionCount;
  70         SaVersionT *versionsSupported;
  71 };
  72
  73 SaAisErrorT saSendMsgRetry (
  74         int s,
  75         struct iovec *iov,
  76         int iov_len);
  77
  78 SaAisErrorT saSendMsgReceiveReply (
  79         int s,
  80         struct iovec *iov,
  81         int iov_len,
  82         void *responseMessage,
  83         int responseLen);
  84
  85 SaAisErrorT saSendReceiveReply (
  86         int s,
  87         void *requestMessage,
  88         int requestLen,
  89         void *responseMessage,
  90         int responseLen);
  91
  92 SaAisErrorT
  93 saPollRetry (
  94         struct pollfd *ufds,
  95         unsigned int nfds,
  96         int timeout);
  97
  98 SaAisErrorT
  99 saHandleCreate (
 100         struct saHandleDatabase *handleDatabase,
 101         int instanceSize,
 102         SaUint64T *handleOut);
 103
 104 SaAisErrorT
 105 saHandleDestroy (
 106         struct saHandleDatabase *handleDatabase,
 107         SaUint64T handle);
 108
 109 SaAisErrorT
 110 saHandleInstanceGet (
 111         struct saHandleDatabase *handleDatabase,
 112         SaUint64T handle,
 113         void **instance);
 114
 115 SaAisErrorT
 116 saHandleInstancePut (
 117         struct saHandleDatabase *handleDatabase,
 118         SaUint64T handle);
 119
 120 SaAisErrorT
 121 saVersionVerify (
 122         struct saVersionDatabase *versionDatabase,
 123         SaVersionT *version);
 124
 125 #define offset_of(type,member) (int)(&(((type *)0)->member))
 126
 127 SaTimeT
 128 clustTimeNow(void);
 129
 130 extern SaAisErrorT saServiceConnect (
 131     int *responseOut, int *callbackOut, enum service_types service);
 132
 133 extern SaAisErrorT saRecvRetry (int s, void *msg, size_t len);
 134
 135 extern SaAisErrorT saSendRetry (int s, const void *msg, size_t len);
 136
 137 #endif /* AIS_UTIL_H_DEFINED */