lib/util.h

   1
   2 /*
   3  * Copyright (c) 2002-2003 MontaVista Software, Inc.
   4  *
   5  * All rights reserved.
   6  *
   7  * Author: Steven Dake (sdake@mvista.com)
   8  *
   9  * This software licensed under BSD license, the text of which follows:
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions are met:
  13  *
  14  * - Redistributions of source code must retain the above copyright notice,
  15  *   this list of conditions and the following disclaimer.
  16  * - Redistributions in binary form must reproduce the above copyright notice,
  17  *   this list of conditions and the following disclaimer in the documentation
  18  *   and/or other materials provided with the distribution.
  19  * - Neither the name of the MontaVista Software, Inc. nor the names of its
  20  *   contributors may be used to endorse or promote products derived from this
  21  *   software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  24  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  27  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  33  * THE POSSIBILITY OF SUCH DAMAGE.
  34  */
  35
  36 #ifndef AIS_UTIL_H_DEFINED
  37 #define AIS_UTIL_H_DEFINED
  38
  39 #include <pthread.h>
  40 #include <sys/poll.h>
  41 #include <sys/socket.h>
  42
  43 #include "../include/ipc_gen.h"
  44
  45 /* Debug macro
  46  */
  47 #ifdef DEBUG
  48         #define DPRINT(s) printf s
  49 #else
  50         #define DPRINT(s)
  51 #endif
  52
  53 #ifdef SO_NOSIGPIPE
  54 #ifndef MSG_NOSIGNAL
  55 #define MSG_NOSIGNAL 0
  56 #endif
  57 void socket_nosigpipe(int s);
  58 #else
  59 #define socket_nosigpipe(s)
  60 #endif
  61
  62 struct saHandleDatabase {
  63         unsigned int handleCount;
  64         struct saHandle *handles;
  65         pthread_mutex_t mutex;
  66         void (*handleInstanceDestructor) (void *);
  67 };
  68
  69
  70 struct saVersionDatabase {
  71         int versionCount;
  72         SaVersionT *versionsSupported;
  73 };
  74
  75 SaAisErrorT
  76 saServiceConnect (
  77         int *responseOut,
  78         int *callbackOut,
  79         enum service_types service);
  80
  81 SaAisErrorT
  82 saRecvRetry (
  83         int s,
  84         void *msg,
  85         size_t len);
  86
  87 SaAisErrorT
  88 saSendRetry (
  89         int s,
  90         const void *msg,
  91         size_t len);
  92
  93 SaAisErrorT saSendMsgRetry (
  94         int s,
  95         struct iovec *iov,
  96         int iov_len);
  97
  98 SaAisErrorT saSendMsgReceiveReply (
  99         int s,
 100         struct iovec *iov,
 101         int iov_len,
 102         void *responseMessage,
 103         int responseLen);
 104
 105 SaAisErrorT saSendReceiveReply (
 106         int s,
 107         void *requestMessage,
 108         int requestLen,
 109         void *responseMessage,
 110         int responseLen);
 111
 112 SaAisErrorT
 113 saPollRetry (
 114         struct pollfd *ufds,
 115         unsigned int nfds,
 116         int timeout);
 117
 118 SaAisErrorT
 119 saHandleCreate (
 120         struct saHandleDatabase *handleDatabase,
 121         int instanceSize,
 122         SaUint64T *handleOut);
 123
 124 SaAisErrorT
 125 saHandleDestroy (
 126         struct saHandleDatabase *handleDatabase,
 127         SaUint64T handle);
 128
 129 SaAisErrorT
 130 saHandleInstanceGet (
 131         struct saHandleDatabase *handleDatabase,
 132         SaUint64T handle,
 133         void **instance);
 134
 135 SaAisErrorT
 136 saHandleInstancePut (
 137         struct saHandleDatabase *handleDatabase,
 138         SaUint64T handle);
 139
 140 SaAisErrorT
 141 saVersionVerify (
 142         struct saVersionDatabase *versionDatabase,
 143         SaVersionT *version);
 144
 145 #define offset_of(type,member) (int)(&(((type *)0)->member))
 146
 147 SaTimeT
 148 clustTimeNow(void);
 149
 150 #endif /* AIS_UTIL_H_DEFINED */
 151