source/cpmsrv/cpmshm.c

0001 /**
0002  * @brief Shared memory handler
0003  *
0004  * @file cpmshm.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 #include <string.h>
0035 #include <stdio.h>
0036 #include <stdlib.h>
0037 #include <memory.h>
0038 #include <sys/param.h>
0039 #include <sys_mqueue.h>
0040 #include <sys/resource.h>
0041 #include <sys/wait.h>
0042 #include <libxml/xmlreader.h>
0043 #include <errno.h>
0044 #include <signal.h>
0045 #include <unistd.h>
0046 #include <sys/stat.h>
0047 #include <sys/types.h>
0048 #include <fcntl.h>
0049
0050 #include <ndrstandard.h>
0051 #include <userlog.h>
0052 #include <atmi.h>
0053 #include <libndrxconf.h>
0054 #include <cpm.h>
0055
0056 #include "cpmsrv.h"
0057 #include "../libatmisrv/srv_int.h"
0058 /*---------------------------Externs------------------------------------*/
0059 /*---------------------------Macros-------------------------------------*/
0060 /*---------------------------Enums--------------------------------------*/
0061 /*---------------------------Typedefs-----------------------------------*/
0062 /*---------------------------Globals------------------------------------*/
0063 /*---------------------------Statics------------------------------------*/
0064 /*---------------------------Prototypes---------------------------------*/
0065
0066 /**
0067  * Sync PIDs with SHM (after the boot, if crash recovery there shall be
0068  * something.
0069  * @return EXSUCCEED/EXFAIL
0070  */
0071 expublic int ndrx_cpm_sync_from_shm(void)
0072 {
0073     int ret = EXSUCCEED;
0074     cpm_process_t *c = NULL;
0075     cpm_process_t *ct = NULL;
0076
0077     EXHASH_ITER(hh, G_clt_config, c, ct)
0078     {
0079         /* lookup the process */
0080         pid_t pid = ndrx_cltshm_getpid(c->key, c->stat.procname,
0081                 sizeof(c->stat.procname), &c->dyn.stattime);
0082
0083         if (EXFAIL!=pid)
0084         {
0085             c->dyn.cur_state=CLT_STATE_STARTED;
0086             /* set current temp stamp */
0087             c->dyn.pid = pid;
0088             c->dyn.shm_read = EXTRUE;
0089         }
0090     }
0091
0092 out:
0093     return ret;
0094 }
0095
0096 /* vim: set ts=4 sw=4 et smartindent: */