xadrv/tms/tms_x.c

0001 /**
0002  * @brief Load the xa switch passed to _tmstartserver or return null switch
0003  *
0004  * @file tms_x.c
0005  */
0006 /* -----------------------------------------------------------------------------
0007  * Enduro/X Middleware Platform for Distributed Transaction Processing
0008  * Copyright (C) 2009-2016, ATR Baltic, Ltd. All Rights Reserved.
0009  * Copyright (C) 2017-2023, Mavimax, Ltd. All Rights Reserved.
0010  * This software is released under one of the following licenses:
0011  * AGPL (with Java and Go exceptions) or Mavimax's license for commercial use.
0012  * See LICENSE file for full text.
0013  * -----------------------------------------------------------------------------
0014  * AGPL license:
0015  *
0016  * This program is free software; you can redistribute it and/or modify it under
0017  * the terms of the GNU Affero General Public License, version 3 as published
0018  * by the Free Software Foundation;
0019  *
0020  * This program is distributed in the hope that it will be useful, but WITHOUT ANY
0021  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
0022  * PARTICULAR PURPOSE. See the GNU Affero General Public License, version 3
0023  * for more details.
0024  *
0025  * You should have received a copy of the GNU Affero General Public License along
0026  * with this program; if not, write to the Free Software Foundation, Inc.,
0027  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
0028  *
0029  * -----------------------------------------------------------------------------
0030  * A commercial use license is available from Mavimax, Ltd
0031  * contact@mavimax.com
0032  * -----------------------------------------------------------------------------
0033  */
0034 #ifndef _GNU_SOURCE
0035 #define _GNU_SOURCE
0036 #endif
0037
0038 #include <string.h>
0039 #include <stdio.h>
0040 #include <stdlib.h>
0041
0042 #include <ndrstandard.h>
0043 #include <ndebug.h>
0044 #include <atmi.h>
0045 #include <atmi_int.h>
0046 #include <sys_mqueue.h>
0047
0048 #include <dlfcn.h>
0049
0050 #include "atmi_shm.h"
0051
0052 #include <xa.h>
0053 /*---------------------------Externs------------------------------------*/
0054 /*---------------------------Macros-------------------------------------*/
0055 /*---------------------------Enums--------------------------------------*/
0056 /*---------------------------Typedefs-----------------------------------*/
0057 typedef  struct xa_switch_t * (*p_func_t)(void);
0058
0059 /*---------------------------Globals------------------------------------*/
0060 /*---------------------------Statics------------------------------------*/
0061 /*---------------------------Prototypes---------------------------------*/
0062
0063 /**
0064  * API entry of loading the driver
0065  * @param symbol
0066  * @param descr
0067  * @return XA switch or null
0068  */
0069 struct xa_switch_t *ndrx_get_xa_switch(void)
0070 {
0071     struct xa_switch_t *ret = NULL;
0072
0073     p_func_t f;
0074
0075     if (NULL==(f = (p_func_t)dlsym( RTLD_DEFAULT, "ndrx_xa_builtin_get" )))
0076     {
0077         NDRX_LOG(log_warn, "ndrx_xa_builtin_get symbol not found");
0078         goto out;
0079     }
0080
0081     NDRX_LOG(log_debug, "ndrx_xa_builtin_get func ptr %p", f);
0082
0083     /* get the switch */
0084     ret = f();
0085
0086     if (NULL==ret)
0087     {
0088         NDRX_LOG(log_error, "Null result!");
0089         return NULL;
0090     }
0091
0092     NDRX_LOG(log_debug, "XA Switch [%s] resolved", ret->name);
0093 out:
0094
0095     if (NULL==ret)
0096     {
0097         NDRX_LOG(log_info, "Using NULL switch");
0098         ret = &tmnull_switch;
0099     }
0100
0101     return ret;
0102 }
0103
0104 /* vim: set ts=4 sw=4 et smartindent: */