s-insnap-c

/****************************************************************************
** (c) Copyright IBM Corp. 2007 All rights reserved.
** 
** The following sample of source code ("Sample") is owned by International 
** Business Machines Corporation or one of its subsidiaries ("IBM") and is 
** copyrighted and licensed, not sold. You may use, copy, modify, and 
** distribute the Sample in any form without payment to IBM, for the purpose of 
** assisting you in the development of your applications.
** 
** The Sample code is provided to you on an "AS IS" basis, without warranty of 
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** IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do 
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** any damages you suffer as a result of using, copying, modifying or 
** distributing the Sample, even if IBM has been advised of the possibility of 
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*****************************************************************************
**
** SOURCE FILE NAME: insnap.c 
**
** SAMPLE: Capture a snapshot at the instance level
**          
**         This sample creates an instance attachment, enables throttling
**         for utilities and calls functions in utilsnap.c to capture an 
**         instance-level snapshot and print the monitor data.
**
** STRUCTURES USED:
**         sqlma
**
**                           
*****************************************************************************
**
** For more information on the sample programs, see the README file.
**
** For information on developing embedded SQL applications see the Developing Embedded SQL Applications book.
**
** For information on DB2 APIs, see the Administrative API Reference.
**
** For the latest information on programming, building, and running DB2 
** applications, visit the DB2 Information Center: 
**     http://publib.boulder.ibm.com/infocenter/db2luw/v9r7/index.jsp
****************************************************************************/

#include "utilsnap.c"

int GetInstanceSnapshot(void);

int main(int argc, char *argv[])
{
  int rc = 0;
  char nodeName[SQL_INSTNAME_SZ + 1];
  char user[USERID_SZ + 1];
  char pswd[PSWD_SZ + 1];

  /* check the command line arguments */
  rc = CmdLineArgsCheck2(argc, argv, nodeName, user, pswd);
  if (rc != 0) return rc;

  printf("\nTHIS SAMPLE SHOWS HOW TO GET AN INSTANCE LEVEL SNAPSHOT.\n");

  /* attach to a local or remote instance */
  rc = InstanceAttach(nodeName, user, pswd);
  if (rc != 0) return rc;

  /* turn on all the monitor switches */
  rc = TurnOnAllMonitorSwitches();
  if (rc != 0) return rc;
  
  /* update UTIL_IMPACT_LIM parameter */
  rc = UpdateUtilImpactLim();
  if (rc != 0) return rc;

  /* capture a snapshot at the instance level and print the monitor data */
  rc = GetInstanceSnapshot();

  /* detach from the local or remote instance */
  rc = InstanceDetach(nodeName);

  return rc;
} /* main */

/***************************************************************************/
/* GetInstanceSnapshot                                                     */
/* Initialize the sqlma with values that tell the db2GetSnapshot API to    */
/* capture an instance level snapshot. Then pass the sqlma to the          */
/* GetSnapshot function in utilsnap.c, which captures the snapshot (using  */
/* the db2GetSnapshot API) and prints the monitor data.                    */
/***************************************************************************/
int GetInstanceSnapshot(void)
{
  int rc = 0;                   /* return code */
  unsigned int obj_num = 1;     /* # of objects to monitor */
  struct sqlma *ma_ptr = NULL;  /* sqlma structure pointer */
  unsigned int ma_sz;           /* size of sqlma structure */

  /* determine and allocate the required memory for sqlma structure */
  /* the memory allocated to ma_ptr is freed in the GetSnapshot function */
  ma_sz = SQLMASIZE(obj_num);
  ma_ptr = (struct sqlma *) malloc(ma_sz);
  if ( ma_ptr == NULL)
  {
    printf("error allocating sqlma. Exiting.\n");
    return(99);
  }

  /* initialize sqlma structure -- of significant importance here is the */
  /* "obj_type" parameter, which indicates the categories of monitor data */
  /* that will be collected */
  memset(ma_ptr, '\0', ma_sz);
  ma_ptr->obj_num = obj_num;
  ma_ptr->obj_var[0].obj_type = SQLMA_DB2; /* get db manager data */

  rc = GetSnapshot(ma_ptr);

  return rc;
} /* GetInstanceSnapshot */